ENERGY STORAGE ARRANGEMENT, A MOTOR VEHICLE COMPRISING SUCH AN ENERGY STORAGE ARRANGEMENT, AND A METHOD FOR PRODUCING SAME

Abstract

An energy storage device arrangement, including a plurality of electrical energy storage devices that are mutually electrically contacted with each other, including a first receiving part having at least one bore-like receiving space for receiving at least one electrical energy storage device, at least one other receiving part connectable with the first receiving part, provided with at least one bore-like receiving space for receiving at least one electrical energy storage device, and at least one plate-like connecting part that is or can be arranged between two receiving parts that are or can be arranged adjacently for electrical contacting of electrical energy storage devices arranged in respective receiving spaces on the side of the receiving part.

Claims

1-15. (canceled)

16. An energy storage device arrangement, comprising: a plurality of storage devices that are or can be mutually contacted with each other, a first receiving part having at least one bore-like receiving space for receiving at least one electrical energy storage device, a second receiving part that is or can be connected with the first receiving part, having at least one bore-like receiving part for receiving at least one electric energy storage device, at least one plate-like electrical part, which is or can be arranged between receiving parts that are or can be arranged adjacently, for electrical contacting of electrical energy storage devices arranged in respective receiving part-side receiving spaces, wherein the electrical energy storage devices are or can be arranged in the respective receiving part-side receiving spaces in such a way that a plurality of respective energy storage device-side contacting poles are exposed, so that the plurality of respective energy storage device-side contacting poles are or can be connected so as to be integrally joined to a plate-like electrical connecting part between two receiving parts that are or can be arranged adjacently to each other, wherein in the receiving parts is arranged at least one separate through-opening for the through-passage of laser energy, for forming the respective energy storage device-side electrical contacting poles, which are or can be arranged between the receiving parts, creating contacting regions that are or can be arranged for contacting in an integrally joined manner the plate-like electrical connecting part.

17. The energy storage devices according to claim 16, wherein, the at least one bore-like receiving space of the first receiving part is connected in a connected state of the second adjacently arranged receiving part of the first receiving part so that it is offset relative to the at least one bore-like receiving space of the second receiving part.

18. The energy storage device arrangement according to claim 16, wherein the electrical energy storage devices are in each case provided with a cylindrical shape, wherein an energy storage device-side electrical contacting pole in the plurality of respective energy storage device-side contacting poles is formed opposite the front sides of the respective electrical energy storage devices.

19. The energy storage device according to claim 16, wherein the first and second receiving parts have a cube-shaped design, wherein the respective bore-like receiving parts are formed respectively at an angle, so that they extend completely to the respective receiving-part side base surface.

20. The energy storage device arrangement according to claim 16, wherein in a connected state of the first receiving part in which it is connected with another receiving part arranged adjacently to surface sections of the first receiving part, as well as the second receiving part, and wherein corresponding elements are formed to create a plug-in connection between the first receiving part and the second receiving part.

21. The energy storage device according to claim 20, wherein at the other receiving part, in the connected state of the first receiving part in which it is connected with the second receiving part opposite the surface section of the first receiving part, at least one connecting element is constructed in the form of a peg-like or pin-like plug-in receptacle, and at the first receiving part, in the connected state of the first receiving part in which it is connected with the second receiving part opposite the surface section of the other receiving part, at least one corresponding connecting element is constructed in the form of a peg-like or pin-like projection plug.

22. The energy storage device arrangement according to claim 16, wherein the respective receiving parts are arranged so as to be distributed in each case in a matrix-like manner in a plurality of rows and columns in receiving spaces, and through-passage openings are arranged so as to be distributed in a matrix-like manner in a plurality of rows and columns, wherein the through-passage openings are arranged so that they are offset relative to the receiving spaces.

23. The energy storage device arrangement according to claim 16, wherein the plate-like electrical connecting part has an indentation formed therein for accommodating an electrical contacting pole projecting from an electrical energy storage device.

24. The energy storage device arrangement according to claim 16, wherein at least one slit-shaped perforation is formed in the plate-like electrical connecting part in the area of the respective contacting regions.

25. The energy storage device arrangement according to claim 16, wherein a first receiving part and at least one other receiving part connected with it in the direction of the longitudinal axis of the receiving-side bore-like receiving space form a receiving part group, wherein a plurality of such receiving part groups are arranged next to each other parallel to the longitudinal axis of the bore-like receiving space of the first receiving part.

26. The energy storage device arrangement according to claim 16, wherein the first and second receiving parts are respectively formed from a plastic material.

27. The energy storage device arrangement according to claim 16, wherein the plate-like electrical connecting element is formed from a metal.

28. A method for manufacturing an energy storage device arrangement according to claim 16, comprising the following steps: providing a first receiving part, at least one other receiving part, as well as a plate-like electrical connecting part to be arranged between the first receiving part and the at least one other receiving part, arranging in each case at least one electrical energy storage device in a plurality of respective receiving part-side receiving spaces, electrically contacting a plurality of exposed contacting poles of the at least one electrical energy storage device arranged in at least the first receiving part with the plate-like electrical connecting part by forming contacting regions which contact the plate-like electrical connecting part in an integrally joined manner by means of laser energy, wherein the laser energy is guided by a through-passage opening on the side of the receiving part, and electrically contacting the exposed contacting poles of the at least one energy storage device arranged in the other receiving part with the plate-like electrical connecting part, contacting in an integrally joined manner the contacting region by means of laser energy, in particular laser radiation, wherein the laser energy is guided by the through-passage opening

Description

[0045] Further advantages, features and details of the invention will become evident from the embodiments described below and from the attached figures, which show the following:

[0046] FIG. 1 the figures show a schematic representation of an energy storage device arrangement according to one embodiment of the invention;

[0047] FIG. 2 the figures show a schematic representation of an energy storage device arrangement according to one embodiment of the invention;

[0048] FIG. 3 the figures show a schematic representation of respective receiving parts belonging to an energy storage device arrangement according to an embodiment of the invention;

[0049] FIG. 4 the figures show a schematic representation of respective receiving parts belonging to an energy storage device arrangement according to an embodiment of the invention;

[0050] FIG. 5 a schematic representation of an energy storage device belonging to an energy storage device arrangement according to an embodiment of the invention;

[0051] FIG. 6 the figures show a schematic representation of a plate-like electrical connecting part belonging to an energy storage device arrangement according to an embodiment of this invention;

[0052] FIG. 7 the figures show a schematic representation of a plate-like electrical connecting part belonging to an energy storage device arrangement according to an embodiment of this invention;

[0053] FIG. 8 the figures show a schematic representation of an arrangement of respective energy storage devices in two respective connecting parts mutually connected to each other without a connecting part;

[0054] FIG. 9 the figures show a schematic representation of an arrangement of respective energy storage devices in two respective connecting parts mutually connected to each other without a connecting part;

[0055] FIG. 10 the figures show a schematic representation of an arrangement of respective energy storage devices in two respective connecting parts mutually connected to each other without a connecting part;

[0056] FIG. 11 the figures show a schematic representation of one step of a method for manufacturing an energy storage device arrangement according to an embodiment of the invention.

[0057] FIG. 12 the figures show a schematic representation of one step of a method for manufacturing an energy storage device arrangement according to an embodiment of the invention.

[0058] FIG. 13 the figures show a schematic representation of one step of a method for manufacturing an energy storage device arrangement according to an embodiment of the invention.

[0059] FIG. 1, 2 shows a schematic representation of an energy storage device arrangement 1 according to an embodiment of the invention in a perspective view. The view of the energy storage device arrangement device 1 shown in FIG. 1 is rotated by 180° as shown in the view of FIG. 2.

[0060] The energy storage device arrangement 1 serves for supplying electricity to a motor vehicle-side electricity consumer, such as for example an electromotive drive, and therefore it can be installed in a motor vehicle, (not shown).

[0061] The energy storage device arrangement 1 comprises a number of energy storage devices 2 which are in mutual contact with one another. Corresponding energy storage devices 2 are for example lithium-based energy storage cells that are accommodated in a cylindrical, which is to say round, energy storage cell housing. A corresponding view of an individual energy storage device 2 is shown in FIG. 5 as a perspective view. The respective front sides of a corresponding energy storage device 2 forming contacting poles 2a, 2b can be seen as shown in FIG. 5. The contacting pole 2a, formed as a projection on the upper end face, is the positive pole, the contacting pole 2b formed on the opposite front face, which is to say of the lower side as shown in FIG. 2, is the negative pole of the energy storage device 2.

[0062] As one can see from FIG. 1, 2 in conjunction with FIG. 3, 4, the energy storage devices 2 associated with the energy storage device arrangement 1 are respectively arranged in two mutually connectable receiving parts 3, 4 which are connected to each other in the properly mounted state of the energy storage device arrangement 1 shown in FIG. 1, 2. The receiving parts 3, 4 are respectively provided with a cube-shaped form. In the following, the receiving part 3 will be referred to as “first receiving part, and the receiving part 4 will be referred to as “another receiving part”.

[0063] It is apparent from the FIG. 1, 2 that both receiving parts 3, 4 are arranged adjacent to one another in the connected state. Accordingly, one surface section, here a base surface, of the first receiving part 3, is arranged opposite a surface section, here also a base surface, of another receiving member 4.

[0064] The first receiving part 3 is provided with a plurality of bore-like receiving spaces 5. Each receiving space 5 serves to accommodate an energy storage device 2. Under the term bore-like receiving space 5 is in this case meant a fully penetrating opening of the first receiving part 3 between two opposite outer surfaces, here base surfaces, of the first receiving part 3. The respective receiving parts 5 are in this case formed with respect to their longitudinal extent so as to be extended transversely relative to the first receiving part 3, perpendicularly to the respective base surfaces on the receiving part side.

[0065] It is evident that the geometrical shape, which is to say in particular the dimensions, the shape and the cross-section of the receiving space 5 are adapted to the geometrical shape, namely in particular to the dimensions, the form and the cross-section of the respective energy storage devices 2 to be arranged in the respective receiving spaces 5. The energy storage devices 2 can thus be arranged to fit precisely into the respective receiving spaces 5 on the receiving-part side.

[0066] The receiving spaces 5 on the receiving-part side are arranged in a matrix-like manner distributed in a plurality of rows and columns. In the embodiments shown in the figures, four horizontally receiving spaces 5 arranged next to each other form a row, and four vertically arranged spaces 5 arranged below each other form a column. The matrix-like arrangement of the corresponding receiving spaces 5 thus comprises four rows arranged horizontally under each other, or four columns arranged vertically next to each other.

[0067] The other receiving part 4 is also provided with a plurality of bore-like receiving spaces 5. Also here, each receiving space 5 of the receiving space 5 serves for accommodation of an energy storage device 2. As one case see in particular from FIGS. 1-4, the explanations above relating to the formation and arrangement of the receiving spaces 5 of the other receiving part 4 are applicable analogously also in the context of the receiving part 5 of the first receiving part 3.

[0068] It is evident in particular from FIG. 3, 4 that the number and the matrix-like arrangement of respective receiving spaces 5 of the first receiving part 3 basically correspond to the number and matrix-like arrangement of the respective receiving spaces 5 of the other receiving part 4.

[0069] The receiving parts 3, 4 are each formed from a material that is not electrically conductive, in this case from a plastic material such as for example ABS, PC, PBT or from mixtures of these materials. The plastic materials can be at least partially transparent and therefore at least partially permeable to laser energy or laser rays at a certain frequency and amplitude. Specifically, this is the case for example with PC or PBT types of materials, which enable a relatively high transmission, in particular above 70%, in the spectrum of visible light.

[0070] In addition to the receiving parts 3, 4, the energy storage device arrangement is associated with a plate-like formed connecting part 6. This connecting part 6, which is shown separately in a perspective view in FIG. 6, is to be arranged between two adjacent connecting parts 3, 4 in the properly mounted state of the energy storage device arrangement 1, in which it is arranged between two adjacently arranged receiving parts 3, 4. The connecting part 6 is therefore provided with a surface section 6a facing the first connecting part 3, and with the upper side surface section 6b facing the other receiving part 4 on the opposite side, or the bottom side. The connecting part 6 is functionally used for electrical contacting of the respective energy storage devices to be arranged in the receiving spaces 5 on the receiving-part side, or mounted in the properly mounted state of the respective energy storage devices 2 in the energy storage device arrangement 1.

[0071] The connecting part 6 is formed from a weldable, electrically conductive material, which is to say from a metal, for example from aluminum or an aluminum alloy.

[0072] As one can see from FIG. 6 and FIG. 7, which show an enlarged representation of the detail VII shown in FIG. 7, recesses or indentations 12 are formed for accommodating a contacting pole 2, which is to say the plus pole, projecting from an energy storage device 2. In this manner, the correct arrangement of a corresponding connecting part 6 relative to the corresponding contacting poles 2a, 2b, and thus also of the entire assembly of the energy storage device arrangement 1, is simplified. The indentations 12 are adapted so as to match the geometrical design of the construction of the electrical contacting pole 2a.

[0073] As shown in FIG. 6, slot-shaped or slit-shaped perforations 13 are further also formed in the connecting part 6. These perforations 13 serve for formation of corresponding process-proof, which is to say soldered contacting regions 9 formed between respective energy storage device-side contacting poles 2a, 2b, and for formation of the connecting part 6, or for formation of a process-proof, integrally joined, which is to say soldered connection.

[0074] As one can see in particular from FIG. 1, 2, the energy storage devices 2 are or can be arranged in the respective receiving-part side receiving spaces 5 in such a way that the respective energy storage device-side contacting poles 2a, 2b are exposed. The energy storage devices therefore are or can be arranged in the longitudinal direction relative to their longitudinal axis in the receiving-part spaces 5. Accordingly, the energy storage device-side contacting poles 2a, 2b are or can be contacted with the connecting part 6 in the state when the connecting part 6 is or can be contacted, or in the correctly mounted state of the energy storage device arrangement 1. The contacting presumes a mechanical or an electrical connection between the respective energy storage device-side contacting poles 2a, 2b with the connecting part 6, and it is thus realized via an integrally joined connection, which is to say via a welded connection. The welded connection is here manufactured by welding with laser rays. However, it would be also conceivable to manufacture the welding connection with another welding method, which is to say for example with ultrasonic welding or with resistance welding.

[0075] It is evident in particular from FIG. 3, 4 that several separate, which is to say separated through-passage openings 7 are created in the receiving parts 3, 4 separately, which is to additionally to the respective receiving spaces 5. The through-passage openings 7 are used to enable through-passage of the laser energy 8, which is to say in particular laser radiation (see FIG. 9, 10, which in addition to FIG. 8 shows a schematic representation of the arrangement of the respective energy storage devices in two receiving parts 3, 4 mutual connected to each other without the respective receiving parts 3, 4).

[0076] It is evident in particular from FIG. 3, 4 that under the term through-passage opening 7 is to be understood an opening that is fully penetrating between two opposite outer surfaces, in this case base surfaces. Its geometrical form, which is to say in particular the dimensions, the shape and the cross-section of the geometrical form is adapted to laser beams or fluxes of laser beams passing through it. It is evident that the geometrical form of each through-passage opening 7 is similar to the geometrical form of respective receiving spaces 5. However, the through-passage openings 7 are here provided with a smaller cross-section in comparison to the receiving spaces 5.

[0077] From the FIG. 3, 4 it can be further also seen that the number and the arrangement of respective through-passage openings 7 on the receiving-part side basically correspond to the number and the arrangement of the respective through-passage openings on the receiving-part side of the receiving spaces 5. This is due to the fact that the through-openings 7 are also arranged so that they are distributed in a matrix-like manner in corresponding rows and columns.

[0078] It can be further also seen from FIG. 3, 4 that the respective through-passage openings 7 on the side of the receiving parts are arranged offset with respect to the respective receiving-side receiving spaces 5. The respective receiving-side through-passage openings 7 extend parallel or are offset parallel to the respective receiving-side receiving spaces 5.

[0079] The laser energy 8 passing through the corresponding through-side openings 7 serves to form contacting regions 9, which create contact with the connecting part 6 the contacting poles 2a, 2b in the integrally joined manner described above so as to contact respective contacting poles 2a, 2b on the energy storage device-side with the connecting part 6 (see FIGS. 8-10). Since the integrally joined contacting is created as a welded connection, the contacting regions 9 are typically represented by weld points or weld seams. The contacting regions 9 can be formed with a circular shape or with a cross shape. The contacting regions 9 can absorb the forces or the moment acting on the energy storage device arrangement 1, for example when they are being installed in a motor vehicle.

[0080] As was already mentioned, FIGS. 8-10 show a schematic representation of the arrangement of respective energy storage devices 2 in two mutually connected receiving parts 3, 4, without the respective receiving parts 3, 4, wherein FIG. 8 shows a front view, FIG. 9 shows a top view and FIG. 10 is a partially sectioned perspective view. It is evident that the receiving spaces 5 of the first receiving part 3 are arranged offset in the connected state of the first receiving part 3, which is connected to the other adjacent receiving part 4, relative to the receiving spaces 5 of the other receiving part. The through-passage openings of the first receiving part 3 are therefore axially aligned with the contacting poles 2a of the energy storage device 2 arranged in the other receiving part 4. Accordingly, the described integrally joined contacting of respective contacting poles 2a, 2b with the connecting part 6 or the formation of corresponding contacting regions 9 is thus rendered possible.

[0081] The purpose and the function of the receiving-side connecting elements 10, 11 is further explained in particular in FIG. 3, 4. The corresponding connecting elements 10, 11, which are formed in the connecting state of the first receiving part 3 in which it is connected with the adjacently connected surfaces of another receiving part 4, are used to create a plug-in connection between the first receiving part 3 and the other receiving part 4. The formation of the plug-in connection and thus also a simple and correct positioning of the respective receiving parts 3, 4 relative to the each other is thus enabled with the interaction between the respective connecting element 10, 11.

[0082] On the other receiving part 4 in the connected state of the first receiving part 3 connected with the receiving part 4 through the base surface opposite the receiving part 3 are formed in a diagonal arrangement connecting part s 10. On the base surface of the first receiving part 3 which is connected with the further receiving part 4, corresponding connecting elements 11 are similarly provided in the connected state of the first receiving part 3 with the opposite surface of other receiving part 4 in the form of peg-like or pin-like plug-in projections.

[0083] A detailed description of the method to manufacture an energy arrangement 1 will now be provided with reference to FIGS. 11-13, which respectively indicate a schematic representation of one step of a method for manufacturing an energy storage device arrangement according to one embodiment of the invention.

[0084] Within the context of the method, the components required for the formation of the energy storage device arrangement are first prepared in a first step. Therefore, a first receiving part 3, another receiving part 4 to be connected to it, and a connecting part 6 to be arranged between the first receiving part 3 and the other receiving part 4, are prepared.

[0085] In a second step, the respective storage devices 2 are arranged in the respective receiving-side receiving spaces 5. As shown in FIG. 11, the energy storage devices 2 are already arranged in the respective receiving spaces 5 on the receiving-part side.

[0086] In a third step is carried out the electrical contacting of the exposed contact poles 2b of the energy storage devices 2 arranged in the first receiving part 3 with the connecting part 6 by forming contacting regions 9 which contact the contacting poles 2b with the connecting part 6 in an integrally joined manner by means of laser energy 8 (see FIG. 9, 10), wherein the laser energy 8 is guided through the respective through-passage openings 7 in the first receiving part 3. As shown in FIG. 12, the contacting of the energy storage device-side contacting poles 2b with the connecting part 6 has already occurred.

[0087] In a fourth step is carried out the electrical contacting of the exposed contacting poles 2a of the energy storage devices 2 arranged in the other receiving part 4 with the contacting part 6 by forming contacting regions 9, which contact the contacting poles 2a that are integrally joined with the connecting part 6 by means of laser energy 8, wherein the laser energy 9 is guided through the through-passage openings 7 in the second receiving part 4 (see FIG. 13).

[0088] Although an energy storage devices arrangement 1 that has only two receiving parts 3, 4 is shown in the figures, it is in principle also possible that the energy storage device arrangement 1 can comprise more than two receiving parts. In this case, there are different arrangement possibilities for the respective receiving parts 3, 4. A first receiving part and another receiving part 4, which is connected to it in the direction of the longitudinal axis of the receiving part-side receiving spaces 5, can form a group of receiving parts. A plurality of such part groups can be arranged next to each other parallel to the longitudinal axis of the receiving spaces 5 of the first receiving part 3.