BATTERY MODULE, BATTERY DEVICES AND METHODS FOR PRODUCING A BATTERY MODULE

Abstract

The invention relates to battery modules, battery devices and to methods for producing a battery module.

Claims

1. Battery module, comprising the following: a plurality of galvanic cells, in particular a plurality of prismatic cells or a plurality of pouch cells, which are arranged in a stacking direction; one or more connecting bodies, wherein the one or more connecting bodies connect the galvanic cells to one another in the stacking direction, wherein one or more connecting bodies are arranged on a long secondary side of the galvanic cells, in particular on a long secondary side of the galvanic cells that faces away from the cell poles of the galvanic cells.

2. Battery module according to claim 1, wherein the battery module comprises a plurality of connecting bodies which are arranged in particular in parallel with one another and/or in parallel with a stacking direction of the battery module.

3. Battery module according to claim 1, wherein the one or more connecting bodies each comprise an in particular one-piece connecting material body made of a connecting material and/or an in particular one-piece receiving body, the connecting material body of each connecting body being received in particular in the receiving body of the connecting body.

4. Battery module according to claim 3, wherein the galvanic cells of the battery module, in particular cell housings of the galvanic cells, the connecting material of the connecting material body, and the receiving body together form a composite component.

5. Battery module according to claim 3, wherein a) the connecting material is a flowable and/or castable material; and/or b) the connecting material is a two-component material.

6. Battery module according to claim 1, wherein a) the galvanic cells are spaced apart from one another in the stacking direction, the galvanic cells in particular being arranged substantially in parallel with one another; and/or b) an intermediate space is in each case arranged between adjacent galvanic cells (102).

7. Battery module according to claim 1, wherein a receiving body of each connecting body has in each case a plurality of spacer elements which have, parallel to the stacking direction of the battery module, a width of approximately 1 to 5 mm, in particular of approximately 2 mm to approximately 4 mm, for example of approximately 2 mm.

8. Battery module according to claim 1, wherein each connecting material body of the one or more connecting bodies is integrally or form-fittingly connected to the galvanic cells of the battery module.

9. Battery module according to claim 1, wherein the galvanic cells of the battery module connect the one or more connecting bodies of the battery module to one another in a load-bearing manner.

10. Battery module according to claim 1, wherein an electrical insulation film is arranged at least partly or only partly on a surface of the galvanic cells, in particular on a surface of the cell housings of the galvanic cells.

11. Battery module according to claim 1, wherein a receiving body of each connecting body comprises two side wall elements and a base wall element, the side wall elements of the receiving body each comprising one or more receiving regions in which a galvanic cell of the battery module is received in each case.

12. Battery module according to claim 11, wherein the side wall elements of the receiving body comprise one or more sealing elements for providing a seal between each side wall element and a galvanic cell.

13. Battery module according to claim 12, wherein one or more sealing elements are arranged at edges of the side wall elements.

14. Battery device, comprising the following: one or more battery modules according to claim 1.

15. Battery device according to claim 14, wherein the battery device comprises a temperature control device which comprises one or more temperature control elements, one or more temperature control elements of the temperature control device preferably being arranged between two adjacent battery modules of the battery device and/or one or more temperature control elements preferably being arranged on a side of each battery module facing away from the cell poles of the galvanic cells of the one or more battery modules.

16. Battery device according to claim 14, wherein battery modules which are adjacent perpendicularly to a stacking direction of the battery modules are connected to one another by means of a common connecting body.

17. Method for producing a battery module, in particular a battery module according to claim 1, wherein the method comprises the following: providing a plurality of galvanic cells; providing a first casting mold, in particular a first receiving body, which comprises a receptacle; arranging the galvanic cells in a stacking direction in the receptacle of the first casting mold, in particular of the first receiving body; introducing an in particular flowable and/or castable connecting material into the receptacle of the first casting mold, in particular of the first receiving body.

18. Method according to claim 17, wherein the connecting material cures and/or cross-links after being introduced into the receptacle of the first casting mold, in particular of the first receiving body.

19. Method according to claim 17, wherein the galvanic cells are arranged in the receptacle of the first casting mold and/or of the first receiving body substantially in parallel with one another and/or spaced apart from one another.

20. Method according to claim 17, wherein the galvanic cells are arranged in a plurality of receptacles of a plurality of first casting molds, in particular of a plurality of first receiving bodies, the flowable and/or castable connecting material being introduced into the plurality of receptacles of the plurality of first casting molds, in particular of the plurality of first receiving bodies.

21. Method according to claim 17, wherein the galvanic cells are cast on a first side of the galvanic cells when the connecting material is introduced into the receptacle of the first casting mold, in particular of the first receiving body.

22. Method according to claim 17, wherein the galvanic cells are fixed on a second side while the connecting material is introduced into the receptacle of the first casting mold, in particular of the first receiving body.

23. Method according to claim 17, wherein, for casting the galvanic cells on a first side of the galvanic cells, the connecting material is first introduced, in particular cast, into a receptacle of a casting mold, in particular of a receiving body, the galvanic cells preferably then being introduced into the still flowable and/or castable connecting material, in particular being pressed into the still flowable and/or castable connecting material.

24. Method according to claim 17, wherein the galvanic cells are heated before the connecting material is introduced into a receptacle of the first casting mold, in particular of the first receiving body.

25. Method according to claim 17, wherein the connecting material is heated, in particular by supplying heat, before being introduced and/or after being introduced into a receptacle of the first casting mold, in particular of the first receiving body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0402] FIG. 1 is a schematic perspective representation of an embodiment of a battery module;

[0403] FIG. 2 is a schematic perspective representation of an embodiment of a receiving body in a method step of a method for producing the embodiment of a battery module shown in FIG. 1;

[0404] FIG. 3 is a schematic perspective representation of the receiving body of FIG. 2 and of galvanic cells arranged in a receptacle of the receiving body in a method step following the method step of FIG. 2 of a method for producing the embodiment of a battery module shown in FIG. 1;

[0405] FIG. 4 is a schematic perspective representation of the receiving body of FIG. 2 and of connecting material inserted into a receptacle of the receiving body in a method step following the method step of FIG. 2 of a method for producing the embodiment of a battery module shown in FIG. 1;

[0406] FIG. 5 is a schematic perspective representation of the receiving body from FIG. 2 and of galvanic cells arranged in a receptacle of the receiving body in a method step following the method step of FIG. 3 or the method step of FIG. 4 of a method for producing the embodiment of a battery module shown in FIG. 1;

[0407] FIG. 6 is a schematic perspective representation of two receiving bodies of FIG. 2 and of galvanic cells arranged in a receptacle of the receiving bodies in a method step, following the method step of FIG. 5, of a method for producing the embodiment of a battery module shown in FIG. 1;

[0408] FIG. 7 is a schematic perspective representation of two receiving bodies from FIG. 2 and of galvanic cells arranged in a receptacle of the receiving bodies in a method step following the method step from FIG. 6 of a method for producing the embodiment of a battery module shown in FIG. 1;

[0409] FIG. 8 is a representation corresponding to the one in FIG. 7, wherein twelve galvanic cells are arranged in a receptacle of the two receiving bodies;

[0410] FIG. 9 is a schematic perspective representation of a partial section of the battery module from FIG. 1;

[0411] FIG. 10 is an enlarged representation of the region X in FIG. 9;

[0412] FIG. 11 is an enlarged representation of the region XI in FIG. 9;

[0413] FIG. 12 is a schematic front view of the battery view of FIG. 1 when viewed in the direction of arrow 12 in FIG. 1;

[0414] FIG. 13 a schematic sectional representation through the battery module of FIG. 1 along the line XIII-XIII in FIG. 12;

[0415] FIG. 14 is an enlarged representation of the region XIV in FIG. 13;

[0416] FIG. 15 is a schematic plan view of the battery module of FIG. 1 when viewed in the direction of arrow 15 in FIG. 1;

[0417] FIG. 16 is a representation corresponding to the representation in FIG. 8, wherein the receiving bodies of the battery module comprise a temperature control channel structure;

[0418] FIG. 17 is a schematic perspective representation of a temperature control channel structure of a receiving body;

[0419] FIG. 18 is a schematic perspective representation of a galvanic cell of the battery module from FIG. 1;

[0420] FIG. 19 is a section of a schematic cross-sectional representation of the galvanic cell from FIG. 18;

[0421] FIG. 20 is a top view of the battery module of FIG. 1, wherein a cell contacting system of the battery module is shown;

[0422] FIG. 21 is a representation corresponding to FIG. 20, wherein the battery module comprises connecting elements for detachable and/or tool-free fixing of a cover element to the battery module, which are arranged on connecting bodies, in particular on receiving bodies, of the battery module;

[0423] FIG. 22 is a schematic side view of the battery module of FIG. 21, looking in the direction of arrow 22 in FIG. 21, wherein a cover element is detachably fixed to the battery module by means of the connecting elements;

[0424] FIG. 23 is a schematic top view of a battery device comprising a housing and a plurality of battery modules shown in FIG. 21;

[0425] FIG. 24 is a schematic top view of a further embodiment of a battery module comprising connection sections, and of an undercut element of a battery device;

[0426] FIG. 25 is a schematic top view of a battery device comprising several battery modules shown in FIG. 24, which are connected to each other by means of undercut elements shown in FIG. 24;

[0427] FIG. 26 is a schematic top view of a further embodiment of a battery module comprising connection sections, and of an undercut element of a battery device;

[0428] FIG. 27 is a schematic top view of a battery device comprising several battery modules shown in FIG. 26, which are connected to each other by means of undercut elements shown in FIG. 26;

[0429] FIG. 28 is a schematic side view of a further embodiment of a battery module;

[0430] FIG. 29 is a schematic top view of an embodiment of a battery device comprising several of the battery modules shown in FIG. 28;

[0431] FIG. 30 is a schematic perspective representation of a receiving body of the battery module embodiment shown in FIG. 28;

[0432] FIG. 31 is a schematic sectional representation of the receiving body of FIG. 30 along the line) XXXI-XXXI in FIG. 30;

[0433] FIG. 32 is a representation of the receiving body corresponding to the representation in FIG. 31, wherein connecting material is inserted into a receptacle of the receiving body;

[0434] FIG. 33 is a schematic front view of the battery module from FIG. 28 along the line 33 in FIG. 28;

[0435] FIG. 34 is a schematic section of the battery module from FIG. 33 along the line XXXIV-XXXIV in FIG. 33;

[0436] FIG. 35 is a schematic perspective representation of a receiving body of a further embodiment of a battery module;

[0437] FIG. 36 is a schematic perspective representation of two receiving bodies, which are arranged parallel to one another, from FIG. 35;

[0438] FIG. 37 is a schematic perspective representation of the receiving bodies shown in FIG. 35, wherein galvanic cells are arranged in receiving areas of side wall elements of the receiving bodies;

[0439] FIG. 38 is a schematic side view of the receiving bodies of FIG. 35 in the direction of arrow 38 in FIG. 37, wherein galvanic cells are arranged in receiving areas of side wall elements of the receiving bodies;

[0440] FIG. 39 is a schematic top view of a further embodiment of a battery module;

[0441] FIG. 40 is a schematic section through the battery module of FIG. 39 along the line XL-XL in FIG. 39;

[0442] FIG. 41 is a schematic top view of a further embodiment of a battery device;

[0443] FIG. 42 is a schematic top view of a further embodiment of a battery device;

[0444] FIG. 43 is a schematic section through the battery device of FIG. 42 along line XLIII-XLIII in FIG. 42; and

[0445] FIG. 44 is a representation of a further embodiment of a battery device corresponding to the representation in FIG. 42.

[0446] The same or functionally equivalent elements are provided with the same reference signs in all figures.

DETAILED DESCRIPTION OF THE DRAWINGS

[0447] FIGS. 1 to 15 show an embodiment of a battery module designated as a whole as 100.

[0448] For example, a battery module 100 is part of a battery device 101, which in particular comprises a plurality of battery modules 100.

[0449] Such a battery device 101 can be used, for example, in a motor vehicle not shown in the drawing.

[0450] Preferably, the battery module 100 comprises a plurality of galvanic cells 102 arranged along a stacking direction, which is indicated by a double arrow 104.

[0451] The battery module 100 has, for example, 4 to 24 galvanic cells 102, preferably 8 to 16 galvanic cells 102, more preferably 12 galvanic cells 102.

[0452] FIG. 18 shows a galvanic cell 102 in a schematic perspective representation.

[0453] The galvanic cells 102 are preferably prismatic cells 106, in particular substantially cuboid cells.

[0454] The galvanic cells 102 of the battery module 100 are preferably secondary cells 108. The galvanic cells 102 are thus preferably rechargeable galvanic cells 102.

[0455] The battery module 100 thus forms in particular an accumulator module.

[0456] The galvanic cells preferably each comprise a cell housing 110, which is in particular prismatic, in particular substantially cuboid-shaped.

[0457] The galvanic cells 102 are formed, for example, according to the PHEV2 format.

[0458] FIG. 19 shows a schematic cross-sectional representation through a galvanic cell 102.

[0459] A respective galvanic cell 102 preferably comprises two cell windings 112 (“jelly rolls”).

[0460] The cell housing 110 of a respective galvanic cell 102 preferably comprises or forms a receiving space 114.

[0461] It can be favorable if the cell windings 112 of a respective galvanic cell 102 are received in the receiving space 114.

[0462] A respective galvanic cell 102 and/or a cell housing 110 of a respective galvanic cell 102 preferably comprise two primary sides 116 and four secondary sides 118, in particular two short secondary sides 118a and two long secondary sides 118b.

[0463] Preferably, the two primary sides 116 and/or two respective secondary sides 118 are arranged on opposite sides of a respective galvanic cell 102 and/or a cell housing 110 of a respective galvanic cell 102.

[0464] In particular, a primary side 116 of a galvanic cell 102 and/or a cell housing 110 of the galvanic cell 102 faces a primary side 116 of a further galvanic cell 102 and/or a cell housing of the further galvanic cell 102, respectively, in the battery module 100.

[0465] The primary sides 116 of a respective galvanic cell 102 and/or a cell housing 110 of a respective galvanic cell 102 have, in particular, a larger surface area than the secondary sides 118 of a respective galvanic cell 102 and/or a cell housing 110 of a respective galvanic cell 102.

[0466] In particular, the short secondary sides 118a have the same width 120 as the long secondary sides 118b, especially in a direction parallel to the stacking direction 104 of the battery module 100.

[0467] The long secondary sides 118b preferably have a greater length than the short secondary sides 118a, particularly in a direction perpendicular to the stacking direction 104 of the battery module 100.

[0468] It can be favorable if the two cell windings 112 of the respective galvanic cells 102 are arranged substantially parallel to one another.

[0469] The cell windings 112 of a galvanic cell 102 of the battery module 100 are preferably flat windings.

[0470] A respective cell winding 112 of the galvanic cells 102 of the battery module 100 comprises, in particular, a plurality of winding layers.

[0471] Winding layers of a respective cell winding 112 are preferably arranged substantially parallel to one another.

[0472] The cell winding 112 preferably comprises a winding layer web that forms the winding layers. The winding layers are preferably formed by winding up the winding layer web. In particular, it is conceivable that a single winding layer web comprises or forms all winding layers of a respective cell winding.

[0473] A respective cell winding 112 of a galvanic cell 102 preferably comprises two deflection regions 122 in which winding layers of the respective cell winding 112 are deflected, wherein the winding layers in a respective deflection region 122 have a common winding line 124.

[0474] In the respective deflection region 122 of the cell winding 112, winding layers of the cell windings 112 are preferably deflected, in particular by approximately 180°.

[0475] The winding lines 124 of the two deflection regions 122 of a respective cell winding 112 are preferably arranged substantially parallel to one another.

[0476] In particular, a respective cell winding 112 of the galvanic cells 102 is formed axisymmetrically with respect to the common winding line 124 in a deflection region 122.

[0477] In particular, it is conceivable that the winding layers of the respective cell winding 112 are arranged substantially in a semicircle in a respective deflection region 122 in a cross-section taken perpendicularly to the common winding line 124.

[0478] Winding layers of a respective cell winding 112 are arranged in an intermediate region 126 of the cell winding 112 arranged between the two deflection regions 122 of the cell winding 112, preferably substantially parallel to a central plane of the cell winding 112 that is not illustrated in the drawings.

[0479] It can be favorable if the common winding line 124 of a respective deflection region 122 of a cell winding 112 is arranged in the central plane of a cell winding 112.

[0480] The stacking direction 104 of the battery module 100 preferably runs substantially perpendicular to a central plane of the cell windings 112 of the galvanic cells 102 of the battery module 100.

[0481] It can be favorable if the common winding line 124 of winding layers of the respective cell winding 112 forms a common central point of semicircularly arranged winding layers of the cell winding 112 in a respective deflection region of the cell winding 112 in a cross-section taken perpendicular to the common winding line 124.

[0482] A winding direction of a respective cell winding 112 represented by means of an arrow 128 preferably runs perpendicular to the common winding lines 124 of the two deflection regions 112 of the respective cell winding 112 and in particular perpendicular to the stacking direction 104 of the battery module 100.

[0483] A winding layer of a respective cell winding 112 preferably comprises a plurality of layers, for example two electrode layers and two separator layers.

[0484] It can be favorable, in particular, if electrode layers and separator layers are arranged alternately in a winding layer.

[0485] A layer sequence in a winding layer of a cell winding 112 is therefore preferably as follows: separator layer, electrode layer, separator layer, electrode layer.

[0486] The electrode layers preferably comprise or are formed from an electrically conductive material, for example aluminum or copper.

[0487] The separator layers preferably comprise or are formed from an electrically insulating material, for example polyethylene and/or polypropylene.

[0488] In particular, the embodiment of the battery module 100 shown in FIGS. 1 to 15 comprises two connecting bodies 130 that connect the galvanic cells 102 to each other in the stacking direction 104.

[0489] Preferably, a connecting body 130 is arranged on a respective short secondary side of each of the galvanic cells 102 of the battery module 100.

[0490] In particular, the battery module 100 comprises a first connecting body 130a by means of which all galvanic cells 102 are connected on a first side thereof.

[0491] Preferably, the battery module 100 further comprises a second connecting body 130b by means of which all the galvanic cells 102 are connected on a second side thereof.

[0492] A respective connecting body 130 preferably completely surrounds a respective short secondary side 118a of the galvanic cells 102.

[0493] It can be favorable if a respective connecting body 130 partially encloses both long secondary sides 118b of the galvanic cells.

[0494] It can also be favorable if a respective connecting body 130 partially encloses a respective primary side 116 of two outer galvanic cells 102 in the stacking direction 104 of the battery module 100.

[0495] Preferably, the two connecting bodies 130 of the battery module 100 each comprise a one-piece receiving body 132.

[0496] In particular, the receiving body 132 of a respective connecting body 130 comprises or is formed from a plastic material.

[0497] As an alternative to a plastic material, it is conceivable that the receiving body 132 comprises or is formed from a metallic material, for example steel or aluminum.

[0498] It can be favorable, for example, if the plastic material of the receiving body 132 is a fiber-reinforced plastic material, such as a glass fiber-reinforced, aramid fiber-reinforced, and/or carbon fiber-reinforced plastic material.

[0499] For example, it is conceivable that the fiber-reinforced plastic material of the receiving body 132 comprises a matrix material, such as polyamide, polypropylene, or polybutylene terephthalate.

[0500] The plastic material of the receiving body 132 is, for example, PA66-GF35 or PA66-GF50.

[0501] Alternatively, it is conceivable that the plastic material of the receiving body 132 is PBT-GF30 or PBT-GF25.

[0502] In particular, the plastic material of the receiving body 132 has a tensile strength of at least approximately 100 N/mm2, particularly at least approximately 150 N/mm2, preferably at least approximately 180 N/mm2.

[0503] For example, it is conceivable that the plastic material of the receiving body 132 has a tensile strength of approximately 135 N/mm2.

[0504] In particular, the plastic material of the receiving body 132 has a creep safety factor (CTI) of at least approximately 400.

[0505] The receiving body 132 is preferably an injection molded body 134, particularly an injection molded component 136.

[0506] The receiving body 132 preferably has an average wall thickness 138 in the range of approximately 1 mm to approximately 5 mm, particularly in the range of approximately 1 mm to approximately 3 mm, for example approximately 2 mm (cf. FIG. 10).

[0507] The receiving bodies 132 of the two connecting bodies 130 each preferably have a C-shaped cross-section perpendicular to the stacking direction 104 of the battery module 100.

[0508] The receiving bodies 132 of the two connecting bodies 130 are preferably cup-shaped or trough-shaped.

[0509] In particular, the cup-shaped and/or C-shaped receiving bodies 132 each comprise a bottom wall element 140 and four side wall elements 142, in particular two short side wall elements 142a and two long side wall elements 142b (cf. FIG. 2).

[0510] It can be favorable if the bottom wall element 140 and/or the four side wall elements 132 are substantially rectangular in a respective plan view thereof.

[0511] It can be favorable in this case if the galvanic cells 102 of the battery module 100 are connected to one another by means of the two connecting bodies 130 in a material bonding and/or form-fitting, in particular load-bearing manner.

[0512] The two connecting bodies 130 also preferably each comprise a one-piece connecting material body 144, which comprises or is formed from a connecting material 146.

[0513] Preferably, a respective receiving body 132 comprises a receiving body 148 in which the connecting material body 144 of a respective connecting body 130 is received.

[0514] It can be favorable if the receptacles 148 of the two receiving bodies 132 are arranged facing each other.

[0515] Each of the short secondary sides 118a of the galvanic cells 102 of the battery module 100 is preferably arranged on a first side of the galvanic cells 102 in the receptacle 148 of the first receiving body 132a.

[0516] Each of the short secondary sides 118a of the galvanic cells 102 of the battery module 100 are preferably arranged in the receptacle 148 of the second receiving body 132b on a second side of the galvanic cells 102 that faces away from the first side of the galvanic cells 102.

[0517] In particular, the connecting material body 144 of the two connecting bodies 130 is a body produced by potting.

[0518] Preferably, a width 150 of the connecting material bodies 144 in a direction perpendicular to the stacking direction 104 of the battery module 100 and parallel to a long secondary side 118b of the galvanic cells 102 approximately corresponds to a total of a wall thickness 152 of a cell housing wall 154 of the cell housing 110 of a respective galvanic cell 102, a distance 156 of the cell winding 112 of the galvanic cell from the cell housing wall 154 of the cell housing, and a width 158 of the deflection region 122 of the cell winding 112 of the galvanic cell 102 (cf. FIGS. 10 and 19).

[0519] In particular, the width 150 of the connecting material body 144 corresponds to an immersion depth of the galvanic cells 102 into the connecting material 146 of the connecting material body 144.

[0520] The width 150 of the connecting material body 144 and/or the immersion depth of the galvanic cells 102 is preferably in the range of approximately 1 mm to approximately 8 mm, in particular of approximately 3 mm to approximately 7 mm.

[0521] Preferably, the galvanic cells 102 of the battery module 100 are materially bonded to each other by means of the connecting material 146.

[0522] It can be favorable if the galvanic cells 102, in particular the cell housings 110 of the galvanic cells 102, are welded into an electrical insulation film.

[0523] For example, it is conceivable that an electrical insulation film is arranged only on a cell base wall element 160 of the cell housing 110 of a respective galvanic cell 102 and/or on a part of a surface of the four cell side wall elements 162 of the cell housing 110 of a respective galvanic cell 102 (cf. FIG. 18).

[0524] In particular, it is conceivable that an electrical insulation film is arranged on at least 20% of a surface of the cell sidewall elements 162 of the cell housing 110.

[0525] If the electrical insulation film is only partially arranged on a surface of the galvanic cells 102, in particular on a surface of the cell housings 110 of the galvanic cells 102, it is possible to preferably improve an adhesion of the connecting material 146 to the surface, since the connecting material 146 adheres better to the surface of the galvanic cells 102, in particular the cell housings 110 thereof, than the electrical insulation film.

[0526] The connecting material body 144 of a respective connecting body 130 is preferably received in the receiving body 132 of the connecting body 130, in particular completely.

[0527] In particular, it may be provided that the connecting material body 144 is received in the receiving body 132 by introducing the connecting material 146 into the receptacle 148 of the receiving body 132, in particular by pouring a flowable and/or castable connecting material 146 and subsequently curing and/or cross-linking the connecting material 146.

[0528] The connecting material 146 of the connecting material body 144 is preferably a castable material, in particular a potting material.

[0529] It can be favorable if the connecting material 146 is a plastic material, in particular a thermosetting plastic material.

[0530] The connecting material 146 preferably comprises or is formed from a resin material.

[0531] For example, it is conceivable that the connecting material 146 comprises or is formed by a polyurethane material, in particular a polyurethane resin.

[0532] In particular, it is conceivable that the connecting material 146 is a two-component casting resin based on polyurethane, polyether and/or polyester polyols.

[0533] Alternatively or additionally, it is conceivable that the connecting material 146 comprises or is formed by an epoxy material, in particular an epoxy resin.

[0534] Preferably, the connecting material 146 comprises or is formed by a casting resin, in particular a polyurethane casting resin or an epoxy casting resin.

[0535] In particular, the connecting material 146 is a two-component material.

[0536] The two-component material preferably comprises a first component, such as a resin material, and a second component, such as a hardening material.

[0537] For example, it is conceivable that the connecting material 146 is formed by a polyaddition reaction of a first component and a second component.

[0538] The hardening material is in particular a reaction triggering material which preferably initiates and/or triggers a cross-linking reaction of the resin material.

[0539] A temperature during curing and/or cross-linking of the connecting material is, for example, at most approximately 80° C., in particular at most approximately 70° C., preferably at most approximately 60° C.

[0540] The connecting material 146 is, in particular, a material that cures by cross-linking.

[0541] In particular, the connecting material 146 has a pot life in the range of approximately 1 minute to approximately 60 minutes, preferably in the range of approximately 20 minutes to approximately 50 minutes, for example, approximately 40 minutes.

[0542] It can be favorable if the connecting material 146 has a curing time of approximately 5 minutes to approximately 35 hours at 22° C., in particular a curing time of approximately 1 hour to approximately 30 hours.

[0543] For example, it is conceivable that the connecting material 146 has a curing time of approximately 8 to 12 hours at 22° C.

[0544] Furthermore, it is conceivable that the connecting material 146 has a curing time of approximately 16 to 30 hours at 22° C.

[0545] The connecting material 146 has, for example, a curing time at approximately 22° C. to a final chemical curing and/or complete cross-linking of approximately 7 days or approximately 168 hours.

[0546] The connecting material 146 preferably assumes a smaller volume after complete curing and/or complete cross-linking thereof than before complete curing and/or before complete cross-linking.

[0547] It can be favorable if the connecting material 146 has a curing shrinkage in the range of approximately 0.5% to approximately 2%, for example approximately 1%.

[0548] The connecting material 146 preferably has a density in the range of approximately 1.1 g/cm3 to approximately 2 g/cm3.

[0549] It can also be favorable if the connecting material 146 has a thermal conductivity in the range of approximately 0.8 W/m*K to approximately 2 W/m*K, for example, a thermal conductivity of approximately 1 W/m*K or a thermal conductivity of 1.5 W/m*K.

[0550] In particular, the connecting material 146 has a dielectric strength in the range of approximately 15 kV/mm to approximately 40 kV/mm, particularly in the range of approximately 20 kV/mm to approximately 36 kV/mm, for example a dielectric strength of approximately 24 kV/mm or of approximately 28 kV/mm.

[0551] Preferably, the connecting material 146 has a volume resistivity in the range of approximately 10{circumflex over ( )}14 Ω/cm to approximately 10{circumflex over ( )}15 Ω/cm.

[0552] It can be favorable if the connecting material 146 has a coefficient of thermal expansion in the range of approximately 50 ppm/K to approximately 210 ppm/K below a glass transition temperature of the connecting material.

[0553] It can also be favorable if the connecting material 146 has a coefficient of thermal expansion in the range of approximately 50 ppm/K to approximately 250 ppm/K above a glass transition temperature of the connecting material.

[0554] A glass transition temperature of the connecting material 146 is, for example, in the range of approximately 5° C. to approximately 90° C.

[0555] A glass transition temperature of the connecting material 146 is, for example, approximately 10° C.

[0556] For example, it is conceivable that the connecting material 146 has a glass transition temperature of approximately 10° C., wherein the connecting material below the glass transition temperature has a coefficient of thermal expansion of approximately 72.5 ppm/K and/or that the connecting material above the glass transition temperature has a coefficient of thermal expansion of approximately 141.7 ppm/K.

[0557] The connecting material 146 preferably has a tensile strength in the range of approximately 5 N/mm2 to approximately 80 N/mm2, particularly in the range of approximately 30 N/mm2 to approximately 60 N/mm2.

[0558] It may be favorable if the connecting material 146 has a modulus of elasticity in the range of approximately 2000 N/mm2 to approximately 14000 N/mm2, particularly in the range of approximately 8000 N/mm2 to approximately 12000 N/mm2.

[0559] Preferably, a respective receiving body 132 forms a casting mold 164 for the connecting material 146 of the connecting material body 144 when the connecting body 130 is produced (cf. FIGS. 4, 5 and 7).

[0560] The connecting material body 144 is preferably materially bonded to the receiving body 132.

[0561] The galvanic cells 102 of the battery module 100, in particular the cell housings 110 of the galvanic cells 102, the connecting material 146 of the connecting material body 144 and the receiving body 132 together form in particular a composite component, so that preferably a high degree of rigidity of the battery module 100 can be realized in a direction running parallel to the stacking direction 104 of the battery module 100.

[0562] It can be favorable if the galvanic cells 102 of the battery module 100 are arranged spaced apart from one another in the stacking direction 104 by means of the two connecting bodies 130, in particular arranged substantially parallel to one another.

[0563] In this case, the primary sides 116 of two adjacent galvanic cells 102, in particular primary sides 116 of cell housings 110 of two adjacent galvanic cells 102, are arranged substantially parallel to each other.

[0564] In particular, the galvanic cells 102 are spaced apart in the stacking direction of approximately 1 mm to approximately 5 mm, in particular of approximately 2 mm to approximately 4 mm, for example of approximately 2 mm (cf. FIG. 166).

[0565] Two galvanic cells 102 adjacent in the stacking direction 104 and/or the two connecting bodies 130 of the battery module 100 preferably each bound a ventilation duct 168 in a direction perpendicular to the stacking direction 104 of the battery module 100 and/or parallel to a short secondary side 118a of the galvanic cells 102, in particular in a direction parallel to the direction of gravity (cf. FIG. 14).

[0566] In particular, the two primary sides 116 of the galvanic cells 102 adjacent to each other in the stacking direction 104 are spaced apart from each other.

[0567] In particular, at least approximately 50%, preferably at least approximately 75%, of each of the respective surfaces of the two primary sides 116 are spaced apart from each other.

[0568] It can be favorable if the battery module 100 comprises a fan device 170, which is shown only schematically and is arranged and designed in such a manner that an air flow directed into the ventilation ducts 168 of the battery module 100 is able to be generated by means of the fan device 170.

[0569] Preferably, the receiving bodies 132 of the two connecting bodies 130 each comprise a plurality of spacer elements 172, which are in particular arranged substantially parallel to each other.

[0570] Preferably, the galvanic cells 102 of the battery module 100 are positioned or can be positioned relative to each other and/or relative to a respective receiving body 132 by means of the spacer elements 172.

[0571] The spacer elements 172 preferably have a width 174 parallel to the stacking direction 104 of the battery module 100 of approximately 1 to 5 mm, in particular of approximately 2 mm to approximately 4 mm, for example of approximately 2 mm (c.f. FIG. 14).

[0572] The spacer elements 172 of a respective receiving body 132 have a distance from each other parallel to the stacking direction 104, for example, substantially corresponding to a width of a secondary side 118 of a respective galvanic cell 102 in a direction parallel to the stacking direction 104 of the battery module 100.

[0573] The spacer elements 172 of the receiving body are, for example, separators.

[0574] Alternatively, it is conceivable that a respective spacer element 172 comprises a plurality of separator pins not shown in the drawing, which in particular are each arranged in alignment in a direction perpendicular to the stacking direction 104 of the battery module 100. A plurality of axially aligned separating pins preferably form a spacer element 172.

[0575] An intermediate space 176 is thus preferably arranged between adjacent galvanic cells 100 respectively, in which cell housings 110 of two adjacent galvanic cells 102 preferably do not contact each other.

[0576] The intermediate space 176 forms, for example, the ventilation duct 168.

[0577] It can be favorable if one or more additional elements that are not shown in the drawing are arranged in the intermediate space 176, for example one or more propagation protection elements, one or more sensor elements and/or one or more temperature control elements.

[0578] Propagation of a thermal runaway of a galvanic cell 102 can preferably be delayed and/or prevented by means of one or more propagation protection elements disposed in the intermediate space 176.

[0579] By means of one or more temperature control elements arranged in the intermediate space 176, the galvanic cells 102 adjacent to the intermediate space 176 can preferably be temperature-controlled, for example cooled.

[0580] Preferably, heat can be dissipated from the intermediate space 176 by means of one or more temperature control elements arranged in the intermediate space 176.

[0581] It can be favorable if spacer elements 172 of a respective receiving body 132 are formed as heat conducting elements, in particular if the receiving body 132 comprises or is formed from a metallic material.

[0582] It can also be favorable if spacer elements 172 of a respective receiving body 132 comprise a temperature control channel structure, which is not shown in the drawing, through which a temperature control medium, in particular a temperature control liquid, can be conducted.

[0583] Sensor elements arranged in the intermediate space 176 comprise or are formed by, for example, temperature sensors, expansion sensors, and/or pressure sensors.

[0584] It can be favorable if a propagation protection element of a battery module 100 comprises the following: [0585] a phyllosilicate, in particular mica, vermiculite and/or expanded graphite; [0586] basalt; [0587] a ceramic material; and/or [0588] a silicone mat having an endothermic filler.

[0589] Preferably, a propagation protection element has a thermal conductivity in a direction parallel to the stacking direction 104 of the battery module 100 of at most approximately 1 W/m*K, in particular at most approximately 0.3 W/m*K, preferably at most approximately 0.1 W/m*K.

[0590] A propagation protection element preferably has a heat resistance of at least approximately 600° C., for example a heat resistance of at least approximately 800° C.

[0591] The battery module further preferably comprises a cell contact system that is not shown graphically in FIGS. 1 to 15 and, in particular, comprises a plurality of cell connection elements.

[0592] The cell poles 178 of two galvanic cells 102 shown in FIG. 18 are in particular connected or can be connected to one another by means of a respective cell connection element, in particular cell poles 178 of two galvanic cells 102 adjacent in the stacking direction 104.

[0593] Preferably, a respective receiving body 132 of a connecting body 130 includes a fastening device 180 for fastening the cell contacting system of the battery module 100 (cf. FIG. 2).

[0594] The cell contacting system is fastened or can be fastened in particular to the receiving bodies 132 by means of the fastening device 180.

[0595] It can be favorable if the fastening device 180 comprises a carrier device 182 to which a cell contacting system of the battery module 100 is fastened or can be fastened.

[0596] The battery module 100 also preferably comprises a cell monitoring system 184, which in particular comprises a cell monitoring board 186 (cf. FIG. 1).

[0597] Preferably, the two connecting bodies 130, in particular the receiving bodies 132 of the two connecting bodies 130, each comprise one or more fastening elements 190, by means of which the battery module 100 can be fixed to a housing of a battery device 101 and which, in particular, are each designed for a connecting element that is not shown in the drawing to pass therethrough.

[0598] The fastening elements 190 are, in particular, sleeve elements 191 for the passage of a screw element, for example a screw.

[0599] The fastening elements 190 are preferably each arranged in end regions 192 of a respective receiving body 132.

[0600] In particular, the receiving bodies 132 of the two connecting bodies 130 each comprise two fastening elements 190. Preferably, a respective battery module 100 comprises four fastening elements 190.

[0601] A longitudinal axis of the sleeve elements 191 is, for example, substantially parallel to a common winding line 124 of a cell winding 112 of a galvanic cell 102 and/or parallel to a short secondary side 118a of a galvanic cell 102.

[0602] The fastening elements 190 preferably comprise or are formed from a metallic material, for example steel or aluminum.

[0603] The fastening elements 190 are in particular metallic sleeves.

[0604] Preferably, the fastening elements 190 of the two connecting bodies 130, in particular the receiving body 132 of the two connecting bodies, are overmolded with the plastic material of the receiving body 132.

[0605] In particular, the fastening elements 190 are overmolded with the plastic material of the receiving body 132 in an injection molding process during the production of the receiving body 132.

[0606] Alternatively, it is conceivable that the fastening elements 190 of the receiving bodies 132 are pressed into the plastic material of the respective receiving body 132. In particular, the receiving bodies 132 are first produced in an injection molding process, wherein the fastening elements 190 are subsequently pressed into openings of the receiving body 132, which are introduced into the receiving body 132 during its production.

[0607] Preferably, the two connecting bodies 130 of the battery module 100 are connected or can be connected to one another in a force-fitting and/or form-fitting manner.

[0608] It can be favorable if the battery module 100 comprises a bracing device 194, by means of which the two connecting bodies 130 of the battery module 100 are connected or can be connected to one another in a force-fitting and/or form-fitting manner.

[0609] The bracing device 1944 is shown only schematically in FIG. 12.

[0610] In particular, a bracing device 194 can be used to exert a bracing force on the two connecting bodies 130 of the battery module 100, in particular a bracing force directed in a direction perpendicular to the stacking direction 104 of the battery module 100 and parallel to a long secondary side 118b of the galvanic cells 102 of the battery module 100, which is indicated by an arrow 196 in FIGS. 1 and 12.

[0611] The two connecting bodies 130 of the battery module 100 can preferably be tensioned against each other and/or towards each other by means of the bracing device 194.

[0612] It can be favorable if the bracing device 194 comprises one or more bracing clamp elements that are not shown in the drawing.

[0613] The battery module 100 shown in FIG. 1 can preferably be produced as follows:

[0614] Preferably, a first receiving body 132 is first provided (cf. FIG. 2).

[0615] It can be favorable if the galvanic cells 102 are arranged in the receptacle 148 of the receiving body 132a along the stacking direction 104, in particular in alignment (cf. FIG. 3).

[0616] By means of the spacer elements 172, the galvanic cells 102 are positioned in particular relative to each other and/or relative to the first receiving body 132a.

[0617] In particular, the galvanic cells 102 are arranged in the receptacle 148 of the first receiving body 132a substantially parallel to each other and/or spaced apart from each other.

[0618] Subsequently, a particularly flowable and/or castable connecting material 146 is preferably introduced into the receptacle 148 of the first receiving body 132a (cf. FIG. 5).

[0619] In particular, the connecting material 146 is cast into the receptacle 148 of the first receiving body 132a, which forms a casting mold (cf. FIG. 5).

[0620] Alternatively, it is conceivable that the connecting material 146 is initially introduced, in particular cast, into the receptacle 148 of the first receiving body 132a (cf. FIG. 4), wherein the galvanic cells 102 are subsequently arranged in the receptacle 148 of the first receiving body 132a (cf. FIG. 5).

[0621] Preferably, the connecting material 146 at least partially cures and/or at least partially cross-links after introduction thereof into the receptacle 148 of the first receiving body 132a.

[0622] When the connecting material 146 is at least partially cured and/or cross-linked, in particular, a connecting material body 144 of a first connecting body 130a is formed, which connects the galvanic cells 102 to each other in the stacking direction 104.

[0623] The connecting material body 144 preferably remains form-fitted in the first receiving body 132a after curing and/or cross-linking of the connecting material 146. In particular, the connecting material body 144 together with the first receiving body 132a forms a first connecting body 130a, which connects the galvanic cells 102 to each other in the stacking direction 104.

[0624] The galvanic cells 102 are connected to each other by means of the connecting material 146 preferably on a first side of the latter, in particular on a short secondary side 118a of the galvanic cells 102.

[0625] It can be favorable if the galvanic cells 102 are fixed on a second side while the connecting material is still flowable and/or castable in the receptacle 148 of the first receiving body 132a.

[0626] The galvanic cells 102 are in particular fixed on the second side while the galvanic cells 102 are cast on the first side.

[0627] Preferably, the galvanic cells 102 are positioned and/or fixed relative to each other on the second side during the introduction of the connecting material 146 into the receptacle 148 of the first receiving body 132a and/or during casting of the galvanic cells 102 on the first side in such a manner that primary sides 116 of the cell housings 110 of the galvanic cells 102 are arranged substantially parallel to each other.

[0628] The second side of the galvanic cells 102 is in particular a side of the galvanic cells 102 facing away from the first side.

[0629] The first side and the second side are, in particular, the short secondary sides 118a of the galvanic cells 102 and/or the cell housings 110 of the galvanic cells 102.

[0630] It can be favorable if the galvanic cells are positioned and/or fixed relative to each other by means of a second receiving body 132b on the second side of the galvanic cells while the galvanic cells 102 are being cast together.

[0631] Preferably, the galvanic cells 102, after curing and/or cross-linking of the connecting material 146 in the receptacle 148 of the first receiving body 132a, are arranged in the receptacle of a second receiving body 132b.

[0632] Subsequently, a connecting material 146, which is in particular flowable and/or castable, is preferably introduced into the receptacle 148 of the second receiving body 132b.

[0633] The second receiving body 132b forms a mold 164 for the connecting material 146.

[0634] The connecting material 146 cures and/or cross-links, preferably at least partially, after introduction thereof into the receptacle 148 of the second receiving body 132b.

[0635] When the connecting material 146 is at least partially cured and/or cross-linked, a connecting material body 144 of a second connecting body 130b is formed, in particular, which connects the galvanic cells 102 to each other in the stacking direction 104.

[0636] The connecting material body 144 preferably remains form-fitted in the second receiving body 132b after curing and/or cross-linking of the connecting material 146. In particular, the connecting material body 144 together with the second receiving body 132b forms a second connecting body 130b, which connects the galvanic cells 102 to each other in the stacking direction 104.

[0637] The connecting material 146 preferably does not fully cure and/or fully cross-link until after the galvanic cells 102 on the first side and the second side have been cast.

[0638] It can be favorable if the galvanic cells 102 are heated and/or dried prior to introducing the connecting material 146 into the receptacle 148 of the first and/or second receiving body 132a, 132b.

[0639] Alternatively or additionally, it can be provided that the connecting material 146 is heated before being introduced and/or after being introduced into the receptacle 148 of the first and/or second receiving body 132a, 132b, in particular by supplying heat.

[0640] Preferably, the galvanic cells 102 are heated to a temperature in the range of approximately 20° C. to approximately 60° C., for example of approximately 25° C. to approximately 55° C., in particular of approximately 25° C. to approximately 45° C.

[0641] Preferably, a dynamic viscosity of the connecting material 146 can be reduced by heating the galvanic cells 102 and/or the connecting material 146.

[0642] A flow behavior of the connecting material 146, in particular, can be improved by heating the galvanic cells 102 and/or the connecting material 146.

[0643] It can also be favorable if heating the galvanic cells 102 can accelerate curing of the connecting material 146.

[0644] Preferably, a consistent process quality can be realized by heating the galvanic cells 102. Preferably, a bubble formation during a curing of the connecting material 146 can be prevented by drying the galvanic cells 102 prior to introducing the connecting material 146 into the receptacle 148 of the receiving body 132 and/or prior to casting the galvanic cells 102.

[0645] The galvanic cells 102 are preferably aligned during the production of the two connecting bodies 130 in such a manner that cell poles 178 of the galvanic cells 102 of the battery module 100, in particular of all galvanic cells 102 of the battery module 100, are arranged in one plane.

[0646] The galvanic cells 102 of the battery module 100 are cast with the connecting material 146 preferably at normal pressure or at a negative pressure, for example, at a pressure in the range of approximately 200 mbar to approximately 800 mbar.

[0647] The connecting material 146 in particular forms a one-piece connecting material body 144 in each case, wherein a one-piece connecting material body 144 preferably connects all galvanic cells 102 of the battery module 100 to one another in a materially bonded and/or form-fitting manner.

[0648] An embodiment of a battery module 100 shown in FIG. 16 differs from the embodiment of a battery module 100 shown in FIGS. 1 to 15 substantially in that the receiving bodies 132 of the two connecting bodies 130 comprise a temperature control channel structure 198 through which a temperature control medium can be conducted.

[0649] A temperature control medium is, for example, a temperature control liquid, in particular water.

[0650] The galvanic cells 102 of the battery module 100 can preferably be temperature controlled, in particular cooled or heated, by means of the temperature control channel structure 198.

[0651] A tempering channel structure 198 of the receiving bodies 132 is, for example, a temperature controlled channel structure 198 produced by roll bonding, in particular when the receiving body 132 comprises or is formed from a metallic material, in particular aluminum.

[0652] In other respects, the embodiment of a battery module 100 shown in FIG. 16 is identical in structure and function to the embodiment of a battery module 100 shown in FIGS. 1 to 15, so that reference is made to their above description in this respect.

[0653] An embodiment of a battery module 100 shown in FIG. 17 differs from the embodiment of a battery module 100 shown in FIG. 16 substantially in that the temperature control channel structure 198 of the receiving bodies 132 is a temperature control channel structure 198 produced by welding, in particular by friction welding, of a plurality of partial bodies of the receiving bodies 132.

[0654] In particular, the receiving bodies 132 comprise or are formed from a plastic material.

[0655] It can be favorable if the partial bodies of the receiving bodies 132 are injection-molded components.

[0656] In other respects, the embodiment of a battery module 100 shown in FIG. 17 is identical in structure and function to the embodiment of a battery module 100 shown in FIG. 16, so that reference is made to the foregoing description thereof.

[0657] An embodiment of a battery module 100 shown in FIG. 20 differs from the embodiment of a battery module 100 shown in FIGS. 1 to 15 substantially in that cell connection elements 200 are thermally coupled, in particular thermally conductively connected, to the connecting material bodies 144 of the two connecting bodies 130.

[0658] The cell connection elements 200 preferably comprise or are formed from a metallic material, in particular a sheet material.

[0659] Two galvanic cells 102 are preferably electrically connected or can be connected to each other by means of a respective cell connection element 200.

[0660] Cell poles 178 of two galvanic cells 102 of the battery module 100 are in particular connected or can be connected to one another by means of the cell connection elements 200, in particular cell poles 178 of two galvanic cells 104 adjacent in the stacking direction 104.

[0661] A respective cell connection element 200 comprises, in particular, two connection sections in each case, wherein the cell connection element 200 is electrically connected or can be connected to a respective cell pole 178 of a galvanic cell 102 by means of a respective connection section.

[0662] The cell connection elements 200 in particular do not comprise any compensating sections by means of which a distance between the two connection sections of a respective cell connection element 200 can be changed.

[0663] The cell connection elements 200 are preferably formed substantially flat and/or flat.

[0664] The cell connection elements 200 preferably each comprise a heat conduction section 202, by means of which heat can be dissipated from the respective cell connection element 200.

[0665] In particular, the heat conduction section 202 of the cell connection elements 200 is thermally coupled, in particular thermally conductively coupled, in each case to a connecting material body 144 of the two connecting bodies 130.

[0666] The heat conduction portion 202 of a respective cell connection element 200 is enclosed with the connecting material 146 of the connecting material body 144, in particular at least partially, preferably substantially completely.

[0667] The heat conduction section 202 of a respective cell connection element 200 is preferably cast into the connecting material 146 of the connecting matrix body 144.

[0668] Preferably, the galvanic cells 102 of the battery module 100 can be cooled by dissipating heat from the cell connection elements 200 of the battery module 100.

[0669] In other respects, the embodiment of a battery module 100 shown in FIG. 20 is identical in structure and function to the embodiment of a battery module 100 shown in FIGS. 1 to 15, so that the description thereof above is referred to in this respect.

[0670] An embodiment of a battery module 100 shown in FIGS. 21 to 23 differs from the embodiment of a battery module 100 shown in FIG. 20 substantially in that the battery module 100 comprises connecting elements 204 for securing a cover element 206 of a battery device 101 to the battery module 100 in a detachable and/or tool-free manner, as shown in FIG. 22.

[0671] The battery device 101 preferably comprises a housing 208 and a plurality of battery modules 100.

[0672] It can be favorable if the housing 208 comprises the cover element 206.

[0673] In particular, the housing 208 of the battery device 101 comprises an interior space 210 in which the battery modules 100 of the battery device 101 are arranged or can be arranged.

[0674] The interior space 210 of the housing 208 of the battery device 101 is preferably closed or can be closed by means of a single cover element 206.

[0675] The connecting elements 204 provided for securing the cover element to the battery modules 100 of the battery device shown in FIG. 23 in a detachable and/or tool-free manner are preferably arranged on an upper side of the two connecting bodies 130, in particular of the receiving bodies 132 of the two connecting bodies 130, facing the cell poles 178 of the galvanic cells 102 of the battery module 100.

[0676] It can be favorable, in particular, if a respective connecting element 204 enabling the cover element 206 to be fixed to a respective battery module 100 in a detachable and/or tool-free manner is arranged on a long side wall element 142b of the receiving body 132 of a respective connecting body 130.

[0677] The cover element 206 is preferably indirectly fixed or can be fixed to the housing 208 via the battery modules 100, in particular by means of the connecting elements 204 for fixing the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner.

[0678] The cover element 206 of the battery device 101 is preferably connected only to the connecting bodies 130 of the battery modules 100.

[0679] The battery modules 100 of the battery device 101 shown in FIG. 23 particularly do not comprise an additional battery module cover element different from the cover element 206 of the battery device 101.

[0680] Preferably, a rigidity of the battery device 101 can be increased by connecting the cover element 206 of the battery device 101 to the battery modules 100 of the battery device 101.

[0681] It can be favorable if the connecting elements 204 for fastening the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner are designed as hook-and-loop fastener elements 212, in particular as hook-and-loop fastener straps.

[0682] Alternatively or additionally thereto, it is conceivable that one or more connecting elements 204 for fastening the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner are designed as magnetic elements, in particular as magnetic strips.

[0683] Further, an adhesive connection can be provided as one or more connecting elements 204 for fastening the cover element 206 to the battery modules 100, at least in a tool-free manner.

[0684] In addition, it is conceivable that one or more rows of individual magnets form one or more connecting elements 204 for fastening the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner.

[0685] The connecting elements 204 for fixing the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner are fixed to the cover element 206, in particular by means of an adhesive connection. At least a sub-element of a respective connecting element 204 is preferably fixed to the cover element 206 by means of an adhesive connection.

[0686] The connecting elements 204 for fixing the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner preferably each comprise two sub-elements, wherein one of the sub-elements of each connecting element 204 is fixed or can be fixed, in particular bonded or can be bonded, to the cover element 206 and another to a respective battery module 100.

[0687] The sub-elements of the connecting elements 204 are preferably each individually fixed to the cover element 206 or to the battery modules 100 in a non-detachable manner. A tool-free and/or detachable connection between the cover element 206 and the battery modules 100 then preferably results from the fact that the two sub-elements can be fixed to each other in a detachable and/or tool-free manner.

[0688] One or more connecting elements, preferably one or two or more than two sub-elements of the connecting elements 204, can in particular comprise or be formed from a plastic material.

[0689] For example, plastic material may include the following: Poly(p-phenylene terephthalamide) (PPTA) and/or Poly(m-phenylene isophthalamide) (PMPI).

[0690] Alternatively or additionally, it can be provided that the connecting elements 204 for fixing the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner, preferably one or two or more than two sub-elements of the connecting elements 204 for fixing the cover element 206 to the battery modules 100 in a detachable and/or tool-free manner, comprise a metal material or are formed from a metal material.

[0691] For example, plastic hook-and-loop fastener elements and/or metal hook-and-loop fastener elements can be provided.

[0692] In other respects, the embodiment of a battery module 100 shown in FIGS. 21 to 23 corresponds in terms of structure and function to the embodiment of a battery module 100 shown in FIG. 20, so that reference is made to the above description thereof.

[0693] An embodiment of a battery module 100 shown in FIGS. 24 and 25 differs from the embodiment of a battery module 100 shown in FIGS. 1 to 15 substantially in that the two connecting bodies 130 of the battery module 100 each comprise two connecting sections 214, by means of which a respective connecting body 130 can be connected to a connecting body 130 of an adjacent battery module 100 (cf. FIG. 25).

[0694] The connecting sections 214 of the connecting bodies 130 comprise, in particular, one or more undercut sections 216 or are formed by the latter.

[0695] Two adjacent battery modules 100 can preferably be connected to each other by means of two undercut elements 218.

[0696] Preferably, an undercut element 218 for connecting two adjacent battery modules 100 can be inserted into a connecting section 214 of a first battery module 100 and into a connecting section 214 of a second battery module 100, respectively, in particular along a longitudinal direction of the connecting section 214 of the first battery module 100 and/or of the connecting section 214 of the second battery module 100.

[0697] Preferably, the connecting bodies 130, in particular the receiving bodies 132, of connected battery modules 100 are in direct contact with each other, with the exception of the connecting sections 214.

[0698] Adjacent battery modules 100 are preferably tensioned or can be tensioned against each other by inserting an undercut element 218 into the connecting sections 214 of the adjacent battery modules 100.

[0699] It can be favorable for a battery device 101 to comprise a housing 208, wherein battery modules 100 of the battery device 101 are connected or can be connected to the housing 208 by means of one or more undercut elements 214.

[0700] In particular, the housing 208 comprises a plurality of connection sections 214 into which an undercut element 218 can be inserted to connect the housing 208 to a respective battery module 100.

[0701] A battery module 100 is connected or can be connected to the housing 208 of the battery device 101 preferably by inserting an undercut element 218 into a connecting section 214 of the battery module 100 and a connecting section 214 of the housing 208.

[0702] A connecting section 214 comprises in particular a groove, which is preferably formed as a profile groove.

[0703] A respective profile groove of the connecting section 214 is preferably arranged substantially perpendicular to the stacking direction 104 of the battery module 100 and/or parallel to a short secondary side 118a of the galvanic cells 102 of the battery module 100.

[0704] It is conceivable, in particular, that the battery module includes a total of four or more than four connection sections 214, such as four profile grooves.

[0705] It can be favorable if an undercut element 218 is formed as profile strip or as a profile block, in particular as a sliding block.

[0706] Preferably, a cross-section of the connecting section 214, in particular the profile groove, is complementary to a cross-section of the undercut element 218.

[0707] It can be favorable if a connecting section 214, in particular a profile groove, is formed in a cross-section as a regular trapezoid.

[0708] An undercut element 218 is thereby preferably formed as a double regular trapezoid in a cross-section.

[0709] The undercut element 218 is, for example, a dovetail profile, in particular a double dovetail profile.

[0710] In other respects, the embodiment of a battery module 100 shown in FIGS. 24 and 25 corresponds in terms of structure and function to the embodiment of a battery module 100 shown in FIGS. 1 to 15, so that reference is made to the above description thereof.

[0711] An embodiment of a battery module 100 shown in FIGS. 26 and 27 differs from the embodiment of a battery module 100 shown in FIGS. 24 and 25 substantially in that a respective connecting section 214, in particular a profile groove, is T-shaped in a cross-section.

[0712] An undercut element 218 is preferably double-T-shaped in a cross-section.

[0713] In other respects, the embodiment of a battery module 100 shown in FIGS. 26 and 27 corresponds in terms of structure and function to the embodiment of a battery module 100 shown in FIGS. 24 to 25, so that reference is made to the above description thereof.

[0714] An embodiment of a battery module 100 shown in FIGS. 28 to 34 differs from the embodiment of a battery module 100 shown in FIGS. 1 to 15 substantially in that a connecting body 130 is arranged on a long secondary side 118b of the galvanic cells 102, in particular on a long secondary side 118b of the galvanic cells 102 facing away from the cell poles 178 of the galvanic cells 102.

[0715] The battery module 100 preferably comprises only a single connecting body 130, which is arranged on the long secondary side 118b of the galvanic cells 102.

[0716] In particular, the battery module 100 does not comprise any further connecting bodies arranged on the short secondary sides 118a of the galvanic cells 102.

[0717] It can be favorable if all long secondary sides 118b of the galvanic cells 102 of the battery module 100 are completely arranged in a receptacle 148 of the receiving body 132 of the single connecting body 130, which are facing away from the cell poles 178 of the galvanic cells 102.

[0718] The connecting body 130 preferably encloses at most approximately 40%, particularly at most approximately 20%, of a surface area of the short secondary sides 118a and/or the main sides 116 of the galvanic cells 102.

[0719] It can be favorable if the receiving body 132 of the connecting body 130 comprises a temperature control channel structure, which is not shown in the drawing, through which a temperature control medium, in particular a temperature control liquid, can be conducted. In particular, a cell base of the galvanic cells 102 of the battery module 100 can be cooled with such a temperature control channel structure.

[0720] Production of the embodiment of the battery module 100 shown in FIGS. 28 to 34 is preferably analogous to a production of the embodiment of a battery module 100 shown in FIGS. 1 to 15.

[0721] It is conceivable that the galvanic cells 102 are first arranged in the receptacle 148 of the receiving body 132 and then the connecting material 146 is introduced, in particular cast, into the receptacle 148 of the receiving body 132.

[0722] Alternatively, it is possible that the connecting material 146 is first placed in the receptacle 148 of the receiving body 132 and then the galvanic cells 102 are arranged in the receptacle 148 of the receiving body 132 (cf. FIGS. 32 to 34).

[0723] It can be favorable if a battery device 101 comprising a plurality of battery modules 100 in accordance with the embodiment shown in FIGS. 28 to 34 comprises a temperature control device 220 comprising a plurality of temperature control elements 222 (cf. FIG. 29).

[0724] The temperature control elements 222 of the temperature control device 200 comprise, in particular, a temperature control channel structure, which is not shown in the drawing, and through which a temperature control medium, in particular a temperature control liquid, can be conducted.

[0725] A temperature control channel structure of the temperature control elements 222 comprises, for example, one or more temperature control channels, which are arranged, in particular, in a meander shape.

[0726] The temperature control elements 222 of the temperature control device 200 are, for example, temperature control elements 222 produced by “roll bonding”.

[0727] Preferably, a temperature control element 222 of the temperature control device 220 is arranged between each two adjacent battery modules 100 of the battery device 101.

[0728] A length 224 of a temperature control element 222 arranged between two adjacent battery modules 100 preferably corresponds to at least approximately 50% of a length 226 of the battery modules 100 in a direction parallel to the stacking direction 104, in particular at least approximately 75%, preferably at least approximately 95%.

[0729] It can also be favorable if a temperature control element 222 is arranged on a side of a respective battery module 100 facing away from the cell poles 178 of the galvanic cells 102 of the battery modules 100.

[0730] Heat can preferably be dissipated from the galvanic cells 102 of the battery modules 100 of the battery device 101 by means of the temperature control elements 222 of the temperature control device 200.

[0731] A cell base of the galvanic cells 102 can preferably be temperature-controlled, in particular cooled or heated, by means of temperature control elements 222, which are arranged on a side of the respective battery module 100 facing away from the cell poles 178 of the galvanic cells 102 of the battery modules 100.

[0732] Temperature control elements 222, which are arranged on a side of the respective battery module 100 facing away from the cell poles 178 of the galvanic cells 102 of the battery modules 100, are preferably in thermal contact with a cell base of the galvanic cells 102, for example by embedding the cell base of the galvanic cells 102 in the connecting material 146.

[0733] Preferably, the temperature control elements 222 of the temperature control device 200 arranged between two adjacent battery modules 100 of the battery device 101 are respectively arranged between the short secondary sides 118a of the galvanic cells 102 of the two adjacent battery modules 100.

[0734] Temperature control elements 100 arranged between two adjacent battery modules 100, in particular between the short secondary sides 118a of the galvanic cells 102 of the battery modules 100, are preferably in thermal contact with the short secondary sides 118a of the galvanic cells 100.

[0735] In all other respects, the embodiment of a battery module 100 shown in FIGS. 28 to 34 is identical in structure and function to the embodiment of a battery module 100 shown in FIGS. 1 to 15, so that reference is made to the above description thereof.

[0736] An embodiment of a battery module 100 shown in FIGS. 35 to 41 differs from the embodiment of a battery module 100 shown in FIGS. 28 to 34 substantially in that the battery module 100 comprises a plurality of connecting bodies 130, which are arranged in particular parallel to each other and/or parallel to the stacking direction 104 of the battery module 100 (cf. FIGS. 36 and 37).

[0737] Preferably, a respective receiving body 132 of the connecting bodies 130 includes two side wall elements 228 and a bottom wall element 230 (cf. FIG. 35).

[0738] The side wall elements 228, in particular, extend substantially perpendicularly away from the bottom wall element 230.

[0739] The side wall elements 228 of a respective receiving body 132 preferably each include a plurality of receiving areas 232, each of which receives a galvanic cell 102 of the battery module 100.

[0740] The receiving areas 232 of the side wall elements 228 of the receiving body 132 preferably have a width 234 in a direction parallel to the stacking direction 104 of the battery module 100, which is substantially equal to a width 120 of the galvanic cells 102 in the direction parallel to the stacking direction 104 of the battery module 100.

[0741] Preferably, a spacing area 236 is arranged between two receiving areas 232 of a side wall element 228.

[0742] In particular, a respective receiving area 232 of a side wall element 228 of the receiving body 132 is bounded by two respective spacing areas 236.

[0743] The spacing areas 236 of a respective side wall element 228 are preferably formed as rectangular projections and, in particular, each form a spacer element 172

[0744] It may be favorable if the receiving areas 232 are formed as rectangular recesses.

[0745] It can also be favorable if the side wall elements 228 of the receiving bodies 132 are designed symmetrically identical to a mirror plane of a respective receiving body 132.

[0746] Preferably, receiving areas 232 and/or spacing areas 236 of the two side wall elements 228 of a respective receiving body 132 are arranged to be substantially congruent.

[0747] The receiving body 132 preferably further comprises two closing elements 238, which are arranged or can be arranged perpendicular to the two side wall elements 228 and perpendicular to the bottom wall element 230.

[0748] A receptacle 148 of the receiving body 132 can preferably be closed by means of the closing elements 238.

[0749] Preferably, the two side wall elements 228, the two closing members 238, and the bottom wall element 230 of the receiving body 132 form and/or define a receptacle 148 of the receiving body 132.

[0750] It may be favorable if the side wall elements 228 of the receiving body 132 comprise one or more sealing members 240 for sealing between a respective side wall element 228 and a galvanic cell 102.

[0751] The sealing elements 240 are only schematically indicated in the figures by means of an arrow.

[0752] Preferably, the sealing elements 240 of the side wall elements 228 are arranged in the area of the receiving areas 232 of the side wall elements 228.

[0753] In particular, the sealing elements 240 are arranged on edges of the side wall elements 228.

[0754] A seal in the area of the receiving areas 232 of the sidewall elements 228 in particular can be realized by means of the sealing elements 240.

[0755] In particular, the sealing elements 232 can prevent leakage of connecting material 146 from the receiving body 132 during production of the battery module 100, in particular when the connecting material 146 is cast into the receptacle 148 of the receiving body 132.

[0756] Preferably, sealing elements 240 arranged in the area of the receiving areas 232 of the side wall elements 228 are designed to be compressible.

[0757] It can be favorable, for example, if the sealing elements 240 comprise or are formed from a rubber material.

[0758] Preferably, the sealing elements 240 can be used to compensate for a height tolerance of the galvanic cells 102 of the battery module 100, in particular by partially compressing the sealing elements 240.

[0759] The receiving bodies 132, in particular the two side wall elements 228 and/or the bottom wall element 230 of the receiving body 132, preferably comprise a temperature control channel structure, which is not shown in the drawing, and through which a temperature control medium, in particular a temperature control liquid, can be conducted.

[0760] In the battery modules shown in FIGS. 39 to 41, it can be provided that adjacent battery modules 100 are connected to each other perpendicular to the stacking direction 104 of the battery modules 100 by means of a common connecting body 130.

[0761] In particular, the common connecting body 130 comprises a common receiving body 132 and/or a common connecting material body 144.

[0762] In particular, the galvanic cells 102 of a respective adjacent battery module 100 are each connected to the common connecting body 130.

[0763] Preferably, the galvanic cells 102 of a first battery module 100 are received in the receiving area 232 of a first side wall element 228 of the common receiving body 132, wherein the galvanic cells 102 of a second battery module 100 are received in the receiving area 232 of a second side wall element 228 of the common receiving body 132.

[0764] In all other respects, the embodiment of a battery module 100 shown in FIGS. 35 to 41 is identical in structure and function to the embodiment of a battery module 100 shown in FIGS. 28 to 34, so that reference is made to the above description thereof.

[0765] FIGS. 42 to 44 illustrate embodiments of battery devices 101 comprising a plurality of battery modules 100 in accordance with any of the embodiments illustrated in FIGS. 1 to 41.

[0766] A respective battery module 100 of the battery device 101 preferably comprises two clamping sections and/or tensioning sections 242.

[0767] The battery modules 100 can be preferably connected to the housing 208 of the battery device 101 by means of the clamping sections and/or tensioning sections 242, in particular can be fixed to the housing 208 in a clamping and/or tensioning manner.

[0768] The clamping sections and/or tensioning sections 242 are preferably formed as grooves, wherein a longitudinal direction of the grooves is in particular arranged substantially parallel to the stacking direction 104 of the battery module 100.

[0769] The clamping sections and/or tensioning sections 242 of a respective battery module 100 are arranged in particular parallel to each other.

[0770] It can be favorable, for example, if the two connecting bodies 130 of an embodiment of a battery module 100 illustrated in FIGS. 1 to 27, in particular a respective receiving body 132 of the two connecting bodies 130, each comprise two clamping sections and/or tensioning sections 242.

[0771] The clamping sections and/or tensioning sections 242 of a respective connecting body 130, in particular of a respective receiving body 132 of the connecting body 130, are arranged preferably at an edge region of the connecting body 130, in particular of the receiving body 132.

[0772] Preferably, the battery device comprises a plurality of clamping elements and/or tensioning elements 244 by means of which the battery modules can be connected to a housing 208 of the battery device 101.

[0773] The clamping elements and/or tensioning elements 244 can preferably be at least partially inserted into the clamping sections and/or tensioning sections 242 of the connecting bodies 130.

[0774] The clamping elements and/or tensioning elements 244 of the battery device 101 are preferably formed substantially complementary to the clamping sections and/or tensioning sections 242 of the battery modules 100.

[0775] The battery modules 100 of the battery device 101 can be fixed to the housing 208 of the battery device 101 by means of the clamping elements and/or tensioning elements 244, in particular in a clamping and/or tensioning manner.

[0776] It can be favorable if the clamping elements and/or tensioning elements 244 are clamping strips.

[0777] In particular, the clamping elements and/or tensioning elements 244 can be screwed to a housing base of the housing 208, in particular by passing a screw element 246 through the clamping elements and/or tensioning elements 244 and then screwing the screw element 246 into the housing base of the housing 208 of the battery device 101.

[0778] The clamping elements and/or tensioning elements 244 can be connected by means of one or more screw elements 246, in particular to the housing 208 and/or to a threaded section fixed to the housing 208, in particular by screwing.

[0779] Preferably, the clamping elements and/or tensioning elements 244 can be moved towards the housing 208 when connecting the latter to the housing 208 of the battery device 101, in particular towards a bottom wall of the housing 208.

[0780] Preferably, the clamping sections and/or tensioning sections 242 of the connecting bodies 130, in particular the receiving body 132 of the connecting bodies 130, and/or the clamping elements and/or tensioning elements 244 of the battery device 101 are designed in such a manner that the battery modules 100, when the clamping elements and/or tensioning elements 100 are displaced in a direction perpendicular to the stacking direction 104 of the battery module 100 and parallel to a short secondary side 118a of the galvanic cells 102, for example when the clamping elements and/or the tensioning elements 244 are screwed to the housing base of the housing 208 of the battery device 100, are clamped and/or tensioned in a direction running perpendicular to the stacking direction 104 and parallel to a long secondary side 118b of the galvanic cells 102.

[0781] The clamping sections and/or tensioning sections 242 of a respective battery module 100 and/or the clamping elements and/or tensioning elements 244 are designed in particular in such a way that the battery modules 100 are clamped and/or tensioned by screwing the clamping elements and/or tensioning elements 244 in a plane running perpendicular to a screwing direction of the screw elements 246.

[0782] In particular, it can be provided that the clamping sections and/or tensioning sections 242 of the battery modules 100 comprise an inclined surface 248 arranged at an angle with respect to the short secondary sides 118a of the galvanic cells 102.

[0783] In particular, the inclined surface 248 is arranged at an angle to a screwing direction of the screw elements 246.

[0784] In the embodiment of a battery device 101 shown in FIGS. 42 and 43, the battery modules 100 are arranged or can be arranged preferably at a distance from each other in a direction perpendicular to the stacking direction 104.

[0785] In the embodiment of a battery device 101 shown in FIG. 44, the battery modules 100 are preferably arranged or can be arranged abutting each other in a direction perpendicular to the stacking direction 104.

[0786] In particular, it is conceivable that the connecting bodies 130, in particular the connecting material bodies 144 of the connecting bodies 130, of adjacent battery modules 100 are connected to one another in a thermally conductive manner. Preferably, heat can be dissipated from the battery modules 100 through the connecting material 146 of the connecting material bodies 144.

[0787] In all battery modules 102 and battery devices 101 shown in the figures, pouch cells, which are not shown in the figures, can be used as galvanic cells 102 as an alternative to prismatic cells 104.

[0788] The following are particular embodiments:

[0789] 1. Battery module (100), comprising: [0790] a plurality of galvanic cells (102), in particular a plurality of prismatic cells (106) or a plurality of pouch cells, which are arranged along a stacking direction; [0791] one or more connecting bodies (130), wherein one or more connecting bodies (130) connect the galvanic cells (102) to each other in the stacking direction.

[0792] 2. Battery module (100) according to embodiment 1, characterized in that the one or more connecting bodies (130) comprise in particular a one-piece connecting material body (144) made of a connecting material (146) and/or in particular a one-piece receiving body (132).

[0793] 3. Battery module (100) according to embodiment 2, characterized in that the connecting material body (144) of a respective connecting body (130) is received in the receiving body (132) of the connecting body (130).

[0794] 4. Battery module (100) according to any of the embodiments 2 or 3, characterized in that the galvanic cells (102) of the battery module (100), in particular cell housings (110) of the galvanic cells (102), the connecting material (146) of the connecting material body (144) and the receiving body (132) together form a composite component.

[0795] 5. Battery module (100) according to any of the embodiments 2 to 4, characterized in that the connecting material (146) is a flowable and/or castable material.

[0796] 6. Battery module (100) according to any of the embodiments 2 to 5, characterized in that the connecting material (146) is a two-component material.

[0797] 7. Battery module (100) according to any of the embodiments 2 to 6, characterized in that the connecting material (146) has a density in the range of approximately 1.1 g/cm3 to approximately 2 g/cm3.

[0798] 8. Battery module (100) according to any of the embodiments 2 to 7, characterized in that the connecting material (146) has a thermal conductivity in the range of approximately 0.8 W/m*K to approximately 2 W/m*K.

[0799] 9. Battery module (100) according to any of the embodiments 2 to 8, characterized in that the connecting material (146) has a dielectric strength in the range of approximately 15 kV/mm to approximately 40 kV/mm, in particular in the range of approximately 20 kV/mm to approximately 36 kV/mm.

[0800] 10. Battery module (100) according to any of the embodiments 2 to 9, characterized in that the connecting material (146) has a volume resistivity in the range of approximately 10{circumflex over ( )}14 Ω/cm to approximately 10{circumflex over ( )}15 Ω/cm.

[0801] 11. Battery module (100) according to any of the embodiments 2 to 10, characterized in that the connecting material (146) has a coefficient of thermal expansion in the range of approximately 50 ppm/K to approximately 210 ppm/K below a glass transition temperature of the connecting material (146) and/or that the connecting material (146) has a coefficient of thermal expansion in the range of approximately 50 ppm/K to approximately 250 ppm/K above a glass transition temperature of the connecting material (146).

[0802] 12. Battery module (100) according to any of the embodiments 2 to 11, characterized in that the connecting material (146) has a curing shrinkage in the range of approximately 0.5% to approximately 2%, for example approximately 1%.

[0803] 13. Battery module (100) according to any of the embodiments 2 to 12, characterized in that the connecting material (146) of the connecting material body (144) has a tensile strength in the range of approximately 5 N/mm2 to approximately 80 N/mm2, in particular in the range of approximately 30 N/mm2 to approximately 60 N/mm2.

[0804] 14. Battery module (100) according to any of the embodiments 2 to 13, characterized in that the connecting material (146) has a modulus of elasticity in the range of approximately 2000 N/mm2 to approximately 14000 N/mm2, in particular in the range of approximately 8000 N/mm2 to approximately 12000 N/mm2.

[0805] 15. Battery module (100) according to any of the embodiments 2 to 14, characterized in that a respective connecting body (130), in particular a respective receiving body (132) of a connecting body (130), comprises a temperature control channel structure (198) through which a temperature control medium can be conducted.

[0806] 16. Battery module (100) according to any of the embodiments 1 to 15, characterized in that the galvanic cells (102) are arranged spaced apart from one another in the stacking direction, wherein the galvanic cells (102) are in particular arranged substantially parallel to one another.

[0807] 17. Battery module (100) according to any of the embodiments 1 to 16, characterized in that a space is arranged between adjacent galvanic cells (102) in each case.

[0808] 18. Battery module (100) according to any of the embodiments 1 to 17, characterized in that a receiving body (132) of a respective connecting body (130) has in each case a plurality of spacer elements (172) which have a width of approximately 1 to 5 mm, in particular of approximately 2 mm to approximately 4 mm, for example of approximately 2 mm, parallel to the stacking direction of the battery module (100).

[0809] 19. Battery module (100) according to any of the embodiments 1 to 18, characterized in that a respective connecting material body (144) of the one or more connecting bodies (130) is connected to the galvanic cells (102) of the battery module (100) in a materially bonding and/or form-fitting manner.

[0810] 20. Battery module (100) according to any of the embodiments 1 to 19, characterized in that the galvanic cells (102) of the battery module (100) connect the one or more connecting bodies (130) of the battery module (100) to one another in a load-bearing manner.

[0811] 21. Battery module (100) according to any of the embodiments 1 to 20, characterized in that the battery module (100) comprises two connecting bodies (130), wherein a connecting body (130) is arranged on a respective short secondary side of the galvanic cells (102) of the battery module (100).

[0812] 22. Battery module (100) according to any of the embodiments 1 to 21, characterized in that a respective connecting body (130) in each case completely encloses a short secondary side (118a) of the galvanic cells (102) and/or in that a respective connecting body (130) partially encloses both long secondary sides (118b) of the galvanic cells (102).

[0813] 23. Battery module (100) according to any of the embodiments 1 to 22, characterized in that a respective receiving body (132) of a connecting body (130) has a C-shaped cross-section.

[0814] 24. Battery module (100) according to any of the embodiments 1 to 23, characterized in that the battery module (100) comprises one or more connecting elements (204) to secure a cover element (206) to the battery module (100) in a detachable and/or tool-free manner.

[0815] 25. Battery module (100) according to embodiment 24, characterized in that one or more connecting elements (204) for securing the cover element (206) to the battery module (100) in a detachable and/or tool-free manner are designed as hook-and-loop fastener elements (212), in particular as hook-and-loop fastener strips.

[0816] 26. Battery module (100) according to embodiment 24 or 25, characterized in that one or more connecting elements (204) for securing the cover element (206) to the battery module (100) in a detachable and/or tool-free manner are designed as magnetic elements, in particular as magnetic strips.

[0817] 27. Battery module (100) according to any of the embodiments 24 to 26, characterized in that the one or more connecting elements (204) for securing a cover element (206) to the battery module (100) in a detachable and/or tool-free manner is arranged on an upper side of the connecting body (130), in particular of the receiving body (132), facing the cell poles of the galvanic cells (102) of the battery module (100).

[0818] 28. Battery module (100) according to any of the embodiments 1 to 27, characterized in that a width of a connecting material body (144) in a direction perpendicular to the stacking direction of the battery module (100) and parallel to a long side (118) of the galvanic cells (102) corresponds approximately to a total of a wall thickness (138) of a cell housing wall of a cell housing (110) of a galvanic cell (102), a distance of a cell winding (112) of the galvanic cell (102) from the cell housing wall of the cell housing (110), and a width of a deflection region (122) of a cell winding of the galvanic cell (102).

[0819] 29. Battery module (100) according to any of the embodiments 1 to 28, characterized in that two galvanic cells (102) adjacent in the stacking direction and/or two connecting bodies (130) of the battery module (100) in a direction running perpendicular to the stacking direction of the battery module (100) and/or parallel to a short secondary side (118) of the galvanic cells (102), in particular in a direction running parallel to the direction of gravity, each bound a ventilation duct (168).

[0820] 30. Battery module (100) according to any of the embodiments 1 to 29, characterized in that the battery module (100) comprises a fan device (170) which is arranged and designed in such a manner that a flow of air directed into ventilation ducts (168) of the battery module (100) can be generated by means of the fan device (170).

[0821] 31. Battery module (100) according to any of the embodiments 1 to 30, characterized in that a respective connecting body (130), in particular a respective receiving body (132), comprises one or more fastening elements (190), by means of which the battery module (100) can be fixed to a housing (208) of a battery device (101) and which are designed in particular in each case for the passage of a connecting element (204).

[0822] 32. Battery module (100) according to any of the embodiments 1 to 31, characterized in that two connecting bodies (130) of the battery module (100) are connected or can be connected to one another in a force-fitting and/or form-fitting manner.

[0823] 33. A battery module (100) according to any of the embodiments 1 to 32, characterized in that a respective receiving body (132) of a connecting body (130) comprises a fastening device (180) for fastening a cell contacting system of the battery module (100).

[0824] 34. A battery module (100) according to any of the embodiments 1 to 33, characterized in that the battery module (100) comprises a plurality of cell connection elements (200) which are designed to be substantially flat and/or planar.

[0825] 35. Battery module (100) according to any of the embodiments 1 to 34, characterized in that the battery module (100) comprises a plurality of cell connection elements (200), by means of which cell poles (178) of two galvanic cells (102) of the battery module (100) are connected or can be connected to one another, wherein a respective cell connection element (200) comprises a heat conduction section (202), by means of which heat can be dissipated from the respective cell connection element (200).

[0826] 36. Battery module (100) according to embodiment 35, characterized in that the heat conduction section (202) of a respective cell connection element (200) is thermally coupled, in particular in a thermally conductive manner, to a connecting material body (144) of a connecting body (130).

[0827] 37. Battery module (100) according to any of the embodiments 1 to 36, characterized in that a respective connecting body (130) of the battery module (100) comprises in each case one or more connecting sections (214), by means of which the connecting body (130) can be connected to a connecting body (130) of an adjacent battery module (100).

[0828] 38. Battery module (100) according to any of the embodiments 1 to 37, characterized in that an electrical insulation film is arranged at least partially or only partially on a surface of the galvanic cells (102), in particular on a surface of the cell housings (110) of the galvanic cells (102).

[0829] 39. Battery module (100) according to any of the embodiments 1 to 38, characterized in that one or more connecting bodies (130) are arranged on a long secondary side (118b) of the galvanic cells (102), in particular on a long secondary side (118b) of the galvanic cells (102) which faces away from the cell poles (178) of the galvanic cells (102).

[0830] 40. Battery module (102) according to embodiment 39, characterized in that the battery module (100) comprises only a single connecting body (130), which is arranged on the long secondary side (118b) of the galvanic cells (102).

[0831] 41. Battery module (100) according to embodiment 40, characterized in that in a receptacle of the receiving body (132) of the single connecting body (130) all long secondary sides (118b) of the galvanic cells (102) of the battery module (100) are completely arranged in each case, which face away from the cell poles (178) of the galvanic cells (102).

[0832] 42. Battery module (100) according to any of the embodiments 40 or 41, characterized in that the receiving body (132) of the connecting body (130) comprises a temperature control channel structure (198) through which a temperature control medium, in particular a temperature control liquid, can be conducted, wherein a cell base of the galvanic cells (102) of the battery module (100), in particular, can be cooled with the temperature control channel structure (198).

[0833] 43. Battery module (100) according to embodiment 39, characterized in that the battery module (100) comprises a plurality of connecting bodies (130), which are arranged in particular parallel to one another and/or parallel to a stacking direction of the battery module (100).

[0834] 44. Battery module (100) according to embodiment 43, characterized in that a receiving body (132) of a respective connecting body (130) comprises two side wall elements (142) and a bottom wall element (140), wherein the side wall elements (142) of the receiving body (132) each comprise one or more receiving areas (232) in which a respective galvanic cell (102) of the battery module (100) is received.

[0835] 45. Battery module (100) according to embodiment 44, characterized in that the side wall elements (142) of the receiving body (132) comprise one or more sealing elements (240) for sealing between a respective side wall element (142) and a galvanic cell (102).

[0836] 46. Battery module (100) according to embodiment 45, characterized in that one or more sealing elements (240) are arranged at edges of the side wall elements (142).

[0837] 47. Battery module (100) according to any of the embodiments 1 to 46, characterized in that the battery module (100) comprises one or more, for example two, clamping sections (242) and/or tensioning sections (242), wherein the battery module (100) can be connected by means of the clamping sections (242) and/or tensioning sections (242) preferably to a housing (208) of a battery device (101), in particular can be fixed to the housing (208) in a clamping and/or tensioning manner.

[0838] 48. Battery module (100) according to embodiment 47, characterized in that the one or more connecting bodies (130) of the battery module (100), in particular a respective receiving body (130) of the one or more connecting bodies (130), each comprise one or more, for example two, clamping sections (242) and/or tensioning sections (242).

[0839] 49. Battery module (100) according to embodiment 47 or 48, characterized in that the clamping sections (242) and/or tensioning sections (242) are formed as grooves, wherein a longitudinal direction of the grooves is arranged in particular substantially parallel to the stacking direction of the battery module (100).

[0840] 50. Battery device (101), comprising: [0841] one or more battery modules (100) according to any of the embodiments 1 to 49.

[0842] 51. Battery device (101) according to embodiment 50, characterized in that the battery device (101) comprises a housing (208) which comprises a cover element (206), wherein the cover element (206) is fixed or can be fixed to the housing (208) indirectly via one or more battery modules (100), in particular by means of one or more connecting elements (204) for fixing the cover element (206) to the one or more battery modules (100) in a detachable and/or tool-free manner.

[0843] 52. Battery device (101) according to embodiment 50 or 51, characterized in that the battery device (101) comprises a temperature control device (220) which comprises one or more temperature control elements (222), wherein one or more temperature control elements (222) of the temperature control device (220) are preferably arranged between two adjacent battery modules (100) of the battery device (101) and/or wherein one or more temperature control elements (222 are preferably arranged on a side of a respective battery module (100) facing away from the cell poles (178) of the galvanic cells (102)) of the one or more battery modules (100).

[0844] 53. Battery device (101) according to any of the embodiments 50 to 52, characterized in that the battery device (101) comprises a plurality of undercut elements (218), wherein battery modules (100) adjacent in a stacking direction are each connected or can be connected to one another by means of one or more undercut elements (218).

[0845] 54. Battery device (101) according to any of the embodiments 50 to 53, characterized in that the battery device (101) comprises a housing (208), wherein battery modules (100) of the battery device (101) are connected or can be connected to the housing (208) by means of one or more undercut elements (218).

[0846] 55. Battery device (101) according to any of the embodiments 50 to 54, characterized in that the battery device (101) comprises a housing (208) and a plurality of clamping elements and/or tensioning elements by means of which one or more battery modules (100) can be connected to a housing (208) of the battery device (101).

[0847] 56. Battery device (101) according to embodiment 55, characterized in that the clamping elements and/or tensioning elements can be screwed to a housing base of the housing (208), in particular by passing a screw element (246) through the clamping elements and/or tensioning elements and then screwing the screw element (246) into the housing base of the housing (208) of the battery device (101).

[0848] 57. Battery device (101) according to embodiment 55 or 56, characterized in that clamping sections (242) and/or tensioning sections (242) of a respective connecting body (130) of the battery module (100) and/or clamping elements and/or tensioning elements of the battery device (101) are formed in such a manner that a respective battery module (100), when the clamping elements and/or tensioning elements are displaced in a direction perpendicular to the stacking direction of the battery module (100) and parallel to a short secondary side (118a) of the galvanic cells (102), for example when the clamping elements and/or the tensioning elements are screwed to a housing base of the housing (208) of the battery device (101), are clamped and/or tensioned in a direction running perpendicular to the stacking direction and parallel to a long secondary side (118b) of the galvanic cells (102).

[0849] 58. Battery device (101) according to any of the embodiments 55 to 57, characterized in that the clamping elements and/or tensioning elements of the battery device (101) are designed substantially complementary to clamping sections (242) and/or tensioning sections (242) of the connecting body (130).

[0850] 59. Battery device (101) according to any of the embodiments 55 to 58, characterized in that the clamping elements and/or tensioning elements are designed substantially complementary to clamping sections (242) and/or tensioning sections (242) of the connecting body (130).

[0851] 60. Battery device (101) according to any of the embodiments 55 to 59, characterized in that the clamping elements and/or tensioning elements can be inserted at least partially into clamping sections (242) and/or tensioning sections (242) of the connecting body (130).

[0852] 61. Battery device (101) according to any of the embodiments 55 to 60, characterized in that the clamping elements and/or tensioning elements of the battery device (101) are clamping strips or sliding blocks.

[0853] 62. Battery device (101) according to embodiment 61, characterized in that a plurality of battery modules (100) can be simultaneously connected to the housing (208) of the battery device (101) by means of a clamping strip.

[0854] 63. Battery device (101) according to embodiment 61 or 62, characterized in that individual battery modules (100) can each be connected to a housing (208) of a battery device (101) by means of one or more sliding blocks.

[0855] 64. Battery device (101) according to any of the embodiments 55 to 63, characterized in that the clamping elements and/or tensioning elements can be connected to the housing (208) and/or to a threaded section fixed to the housing (208) by means of one or more screw elements (246), in particular by screwing.

[0856] 65. Battery device (101) according to any of the embodiments 50 to 64, characterized in that adjacent battery modules (100) perpendicular to a stacking direction of the battery modules (100) are connected to each other by means of a common connecting body (130).

[0857] 66. Method of producing a battery module (100), in particular a battery module (100) according to any of the embodiments 1 to 49, wherein the method comprises: [0858] providing a plurality of galvanic cells (102); [0859] providing a first casting mold (164), in particular a first receiving body (132), which comprises a receptacle (148); [0860] arranging the galvanic cells (102) along a stacking direction in the receptacle (148) of the first casting mold (164), in particular of the first receiving body (132); [0861] introducing a connecting material (146), in particular a flowable and/or castable connecting material, into the receptacle (148) of the first casting mold (164), in particular of the first receiving body (132).

[0862] 67. Method according to embodiment 66, characterized in that the connecting material (146) cures and/or cross-links after the introduction thereof into the receptacle (148) of the first casting mold (164), in particular of the first receiving body (132).

[0863] 68. Method according to embodiment 66 or 67, characterized in that the galvanic cells (102) are arranged in the receptacle (148) of the first casting mold (164) and/or the first receiving body (132) substantially parallel to each other and/or spaced apart from each other.

[0864] 69. Method according to any of the embodiments 66 to 68, characterized in that the galvanic cells (102) are arranged in a plurality of receptacles (148) of a plurality of first casting molds (164), in particular a plurality of first receiving bodies (132), wherein the flowable and/or castable connecting material (146) is introduced into the plurality of receptacles (148) of the plurality of first casting molds (164), in particular the plurality of first receiving bodies (132).

[0865] 70. Method according to any of the embodiments 66 to 69, characterized in that the galvanic cells (102) are cast on a first side of the galvanic cells (102) when the connecting material (146) is introduced into the receptacle (148) of the first casting mold (164), in particular of the first receiving body (132).

[0866] 71. Method according to any of the embodiments 66 to 70, characterized in that the galvanic cells (102), after curing and/or cross-linking of the connecting material (146) in the receptacle (148) of the first casting mold (164), in particular of the first receiving body (132), are arranged in a receptacle (148) of a second casting mold (164), in particular of a second receiving body (132), and subsequently a connecting material (146), in particular a flowable and/or castable connecting material, is introduced into the receptacle (148) of the second casting mold (164), in particular of the second receiving body (132).

[0867] 72. Method according to embodiment 71, characterized in that the connecting material (146) cures and/or cross-links after the introduction thereof into the receptacle (148) of the second casting mold (164), in particular of the second receiving body (132).

[0868] 73. Method according to embodiment 71 or 72, characterized in that the galvanic cells (102) are cast on a second side of the galvanic cells (102) when the connecting material (146) is introduced into the receptacle (148) of the second casting mold (164), in particular of the second receiving body (132).

[0869] 74. Method according to any of the embodiments 66 to 73, characterized in that the galvanic cells (102) are fixed on a second side while the connecting material (146) is introduced into the receptacle (148) of the first casting mold (164), in particular of the first receiving body (132).

[0870] 75. Method according to any of the embodiments 66 to 74, characterized in that for casting the galvanic cells (102) on a first side and/or on a second side of the galvanic cells (102), first the connecting material (146) is introduced, in particular cast, into a receptacle (148) of a casting mold (164), in particular of a receiving body (132), wherein subsequently the galvanic cells (102) preferably are introduced into the still flowable and/or castable connecting material (146), in particular pressed into the still flowable and/or castable connecting material (146).

[0871] 76. Method according to any of the embodiments 66 to 75, characterized in that the galvanic cells (102) are heated before introducing the connecting material (146) into a receptacle (148) of the first casting mold (164), in particular of the first receiving body (132), and/or before introducing the connecting material (146) into a receptacle (148) of a second casting mold (164), in particular of a second receiving body (132).

[0872] 77. Method according to any of the embodiments 66 to 76, characterized in that the connecting material (146) is heated, in particular by supplying heat, before the introduction and/or after the introduction thereof into a receiving body (148) of the first casting mold (164), in particular of the first receptacle (132), and/or before the introduction and/or after the introduction thereof into a receptacle (148) of the second casting mold (164), in particular of a second receiving body (132).