ENERGY STORAGE DEVICE AND VEHICLE

Abstract

An energy storage device has a housing with two opposing sidewalls, a module with two opposing cooling walls which are arranged between the sidewalls, a heat sink on which the cooling walls are arranged, at least two energy storage units, which are arranged between the cooling walls and on the heat sink, and a pressure element which is arranged between the two energy storage units. The pressure element presses the energy storage units against the respectively adjacent cooling wall. Ideally, a vehicle is configured with an energy storage device of this kind.

Claims

1-14. (canceled)

15. An energy storage device, comprising: a housing having two opposing side walls; and a module having two opposing cooling walls disposed between said two opposing walls, a cooling plate on which said two opposing cooling walls are disposed, at least two energy storage units disposed between said two opposing cooling walls and on said cooling plate, and a pressure element disposed between said at least two energy storage units, said pressure element pressing said at least two energy storage units against a respectively adjacent one of said two opposing cooling wall.

16. The energy storage device according to claim 15, further comprising at least one further module, said at least one further module containing: two further opposing cooling walls; a further cooling plate, on which said two further opposing cooling walls are disposed; at least two further energy storage units disposed between said two further opposing cooling walls and on said further cooling plate; a further pressure element disposed between said at least two further energy storage units, wherein said further pressure element presses said at least two further energy storage units against a respectively adjacent one of said two further opposite cooling walls of said at least one further module; and said at least one further module is connected to said module in a mechanically stable manner by said two opposing side walls.

17. The energy storage device according to claim 15, wherein said pressure element is, at least in places, wedge-shaped and/or, at least in places, tube-shaped.

18. The energy storage device according to claim 15, further comprising an electrically insulating insulating element, said at least two energy storage units being partially surrounded by said electrically insulating insulating element.

19. The energy storage device according to claim 18, wherein said electrically insulating insulating element has an electrically insulating film.

20. The energy storage device according to claim 18, wherein said electrically insulating insulating element contains an electrically insulating foam.

21. The energy storage device according to claim 15, wherein an inner surface of at least one of said two opposing side walls and/or an inner surface of at least one of said two opposing cooling walls and/or an inner surface of said cooling plate are/is are electrically insulating.

22. The energy storage device according to claim 15, wherein said cooling plate has cooling elements.

23. The energy storage device according to claim 16, wherein: said two opposing cooling walls each have a positioning element; and said two opposing cooling walls each have a receptacle for a further positioning element.

24. The energy storage device according to claim 15, wherein: said two opposing side walls, said two opposing cooling walls and said cooling plate define an interior space of said module; and said at least two energy storage units of said module fill at least 90% of said interior space.

25. The energy storage device according to claim 15, wherein said at least two energy storage units are electrically interconnected as a traction battery.

26. The energy storage device according to claim 15, further comprising: first connecting elements, said two opposing cooling walls are connected to said two opposing side walls in a mechanically stable manner by said first connecting elements; second connecting elements, said cooling plate is connected to said two opposing side walls in a mechanically stable manner by said second connecting elements; and third connecting elements, said cooling plate is connected to said two opposing cooling walls in a mechanically stable manner by said third connecting elements.

27. A vehicle, comprising: the energy storage device according to claim 15

28. The vehicle according to claim 27, wherein the vehicle is a rail vehicle.

Description

[0057] In the figures:

[0058] FIGS. 1, 2, 3, 4 and 5 show schematic depictions of an energy storage device according to an exemplary embodiment,

[0059] FIGS. 6, 7 and 8 show schematic depictions of an energy storage device according to an exemplary embodiment, and

[0060] FIG. 9 shows a schematic depiction of a rail vehicle according to an exemplary embodiment.

[0061] The energy storage device 1 according to the exemplary embodiment in FIGS. 1, 2, 3, 4 and 5 comprises a housing 1a with two side walls 2, between which a module 3a is arranged. The parallel side walls 2 in each case have a main extension plane extending along the axes y and z.

[0062] The module 3a arranged therebetween comprises two opposing cooling walls 4a. The parallel cooling walls 4a are in each case arranged between the side walls 2. Furthermore, the cooling walls 4a in each case have a main extension plane extending in each case along the axes x and z. The cooling walls 4a are connected to the side walls 2 by first connecting elements 12a in a mechanically stable manner.

[0063] Furthermore, the module 3a comprises a cooling plate 5a on which the cooling walls 4a are arranged. The cooling plate 5a is also arranged between the side walls 2. Furthermore, the cooling plate 5a has a main extension plane extending along the axes x and y. The cooling plate 5a is connected to the side walls 2 by second connecting elements 13a in a mechanically stable manner. Here, the cooling plate 5a is in direct contact with the side walls 2 and the cooling walls 4a. Furthermore, the side walls 2 and the cooling walls 4a are in direct contact. Here, the side walls 2, the cooling walls 4a and the cooling plate 5b form an interior space of the module 3a.

[0064] The module 3a comprises at least two energy storage units 6a arranged between the cooling walls 4a and on the cooling plate 5b. Furthermore, the energy storage units 6a are arranged between the side surfaces 2. This means that the energy storage units 6a are arranged in the interior space of the module 3a.

[0065] An electrically insulating insulating element 8 is in each case arranged on the inner surfaces of the cooling walls 4a. on the one inner surface of the cooling plate 5a and on the inner surfaces of the side walls 2. Herein, the inner surfaces of the cooling walls 4a. the inner surface of the cooling plate 5a and the inner surfaces of the side walls 2 face the interior space of the module 3a. The electrically insulating insulating element 8 is, for example, an electrically insulating film 8c. Alternatively, the electrically insulating insulating element 8 is an electrically insulating foam 8d.

[0066] A pressure element 7a is arranged between the energy storage units 6a. The pressure element 7a is, at least in places, wedge-shaped and/or tube-shaped. If the pressure element 7a is wedge-shaped, the wedge-shaped pressure element 7a exerts a mechanical pressure on the energy storage units 6a along the axis y. The pressure element 7a presses the energy storage units 6a against the respectively adjacent cooling wall 4a along the axis y. The pressure connects the energy storage units 6a with the cooling walls 4a in a mechanically stable manner.

[0067] Furthermore, the cooling plate 5a is connected to the cooling walls 4a by third connecting elements 14a in a mechanically stable manner, as depicted in FIGS. 2 and 3.

[0068] As depicted in FIGS. 4 and 5, the cooling plate 5a protrudes over the interior space bounded by the cooling walls 4a in a plane along the axes x and y. In each case, an inlet 9a and an outlet 9b for, for example, cooling liquid is arranged on the cooling plate 5a in the two protruding areas. The inlet 9a and the outlet 9b are arranged point-symmetrically on the base plate according to the top view in FIG. 4. Alternatively, it is possible for the inlets 9a and the outlets 9b to be arranged mirror-symmetrically on the base plate according to the top view in FIG. 4.

[0069] In contrast to the exemplary embodiment in FIGS. 1, 2, 3, 4 and 5, the energy storage device 1 according to the exemplary embodiment in FIGS. 6, 7, and 8 comprises further modules 3b. The further modules in each case comprise two further opposing cooling walls 4b arranged between the side walls 2. The further cooling walls 4b are arranged on each side in a common plane with the cooling walls 4a running along the axes x and z. The further cooling walls 4b are connected to the side walls 2 by further first connecting elements 12b in a mechanically stable manner.

[0070] Furthermore, each further module 3b comprises a further cooling plate 5b on which the further cooling walls 4b are arranged in each case. The further cooling plates 5b are connected to the side walls 2 by further second connecting elements 13b in a mechanically stable manner. The side walls 2, the further cooling walls 4b and the further cooling plate 5b of a further module in each case form a further interior space 3b. Two further energy storage units 6b are in each case arranged in these further interior spaces 3b.

[0071] A further electrically insulating insulating element 8b is in each case arranged on inner surfaces of the further cooling walls 4b. on inner surfaces of the cooling plate 5b and on inner surfaces of the side walls 2.

[0072] Furthermore, the further modules 3b in each case have a further pressure element 7b arranged between the energy storage units 6b. The further pressure elements 7b have the same shape as the pressure element 7a according to the exemplary embodiment in FIGS. 1, 2, 3, 4 and 5. The pressures generated by the further pressure elements 7b in each case connect the further energy storage units 6b to the respective further cooling walls 4b in a mechanically stable manner.

[0073] Inlets 9a and outlets 9b are in each case arranged on the further cooling plates 5b, as depicted in FIG. 7. The inlets 9a and outlets 9b are, for example, arranged in the same way as in the exemplary embodiment in FIG. 4.

[0074] As depicted in FIG. 8, the cooling wall 4a and the further cooling walls 4b in each case comprise a positioning element 10a. The cooling plate 5b and the further cooling plates 5b in each case comprise a further positioning element 10b. Furthermore, the cooling wall 4a and the further cooling walls 4b in each case comprise a receptacle for a further positioning element 11b opposite each further positioning element 10b. The cooling plate 5a and the further cooling plates 5b in each case comprise a receptacle for a positioning element 11a opposite each positioning element 10a. Here, each positioning element 10a is at least partially introduced into the respective receptacle for a positioning element 11a and each further positioning element 10b is at least partially introduced into the respective receptacle for a further positioning element 11b.

[0075] An intermediate space between a further cooling plate 5b and the energy storage units 6a is filled with an insulating element 8a. Further intermediate spaces between the further cooling plates 5b and the further energy storage units 6b are, for example, in each case filled with a further insulating element 8b.

[0076] According to the exemplary embodiment in FIG. 9, a vehicle 15, in particular a rail vehicle, comprises at least one energy storage device 1 as described here.

[0077] Although the invention was illustrated and described in more detail with reference to exemplary embodiments, the invention is not restricted to the disclosed exemplary embodiments and the specific feature combinations explained therein. Further variations of the invention can be obtained by a person skilled in the art without departing from the scope of protection of the claimed invention.

LIST OF REFERENCE CHARACTERS

[0078] 1 Energy storage device [0079] 1a Housing [0080] 2 Side walls [0081] 2a Inner surface side wall [0082] 3a Module [0083] 3b Further module [0084] 4a Cooling walls [0085] 4b Further cooling walls [0086] 4c Inner surface of cooling wall [0087] 5a Cooling plate [0088] 5b Further cooling plate [0089] 5c Inner surface of cooling plate [0090] 6a Energy storage units [0091] 6b Further energy storage units [0092] 7a Pressure element [0093] 7b Further pressure element [0094] 8a Insulating element [0095] 8b Further insulating element [0096] 8c Electrically insulating film [0097] 8d Electrically insulating foam [0098] 9 Cooling elements [0099] 9a Inlet [0100] 9b Outlet [0101] 10a Positioning element [0102] 10b Further positioning element [0103] 11a Receptacle for a positioning element [0104] 11b Receptacle for a further positioning element [0105] 12a First connecting elements [0106] 12b Further first connecting elements [0107] 13a Second connecting elements [0108] 13b Further second connecting elements [0109] 14a Third connecting elements [0110] 14b Further third connecting elements [0111] 15 Vehicle