CN217691341U - Battery module and battery pack with same - Google Patents

Abstract

The utility model provides a battery module and have its battery package, wherein, the battery module, include: a plurality of cooling plates arranged at intervals; the electric core groups are arranged between two adjacent cooling plates; wherein, be provided with the cooling channel who extends along the length direction of electric core group in the cooling plate, still be provided with the import and the export with the cooling channel intercommunication on the cooling plate. Use the technical scheme of the utility model the cooling structure in can solving the battery package in the correlation technique effectively is to the not good problem of the cooling effect of battery module.

Description

Battery module and have its battery package

Technical Field

The utility model relates to a power battery field particularly, relates to a battery module and have its battery package.

Background

The battery package generally includes the shell and sets up the battery module in the shell, and the battery module can produce the heat at the during operation, if not in time dispel the heat to the battery module and can lead to the battery module overheated, has increased the risk of electric core thermal runaway.

Current cooling structure generally sets up in the bottom of battery package shell, and the lower surface of battery module carries out the heat transfer between cooling structure to cool down battery module. However, this arrangement tends to increase the height of the battery pack and to reduce the space in the passenger compartment. On the other hand cooling structure sets up in the bottom of battery module, and heat transfer's route is far away, can't reach the effect of quick cooling battery module.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a battery module and have its battery package to solve the problem that cooling structure in the battery package among the correlation technique is not good to the cooling effect of battery module.

In order to achieve the above object, according to an aspect of the present invention, there is provided a battery module including: a plurality of cooling plates arranged at intervals; the electric core groups are arranged between two adjacent cooling plates; wherein, be provided with the cooling channel who extends along the length direction of electric core group in the cooling plate, still be provided with the import and the export with cooling channel intercommunication on the cooling plate.

Further, a plurality of cooling plates form a plurality of plate groups, each plate group comprises a plurality of cooling plates, and the cooling channels of the plurality of cooling plates in the same plate group are arranged in a communication manner.

Further, the cooling channels of the plurality of cooling plates in different plate groups are arranged independently.

Further, the battery module still includes: each communicating pipe is communicated with corresponding ends of two adjacent cooling plates in the same plate group; and/or, the battery module still includes: the liquid inlet pipe is arranged at the second end of the electric core group and comprises a liquid inlet main pipe and a plurality of liquid inlet branch pipes communicated with the liquid inlet main pipe, and each liquid inlet branch pipe is communicated with the inlet of the cooling plate; and the liquid outlet pipe is arranged at the second end of the electric core group and comprises a liquid outlet main pipe and a plurality of liquid outlet branch pipes communicated with the liquid outlet main pipe, and each liquid outlet branch pipe is communicated with the outlet of the cooling plate.

Further, the cooling plate includes: a housing, in which a cooling channel is provided; and the two mounting plates are respectively arranged at the first end and the second end of the shell, and each mounting plate is provided with a joint communicated with the cooling channel.

Further, the cooling plate further includes: and the reinforcing ribs are arranged in the cooling channel and extend along the length direction of the shell.

Further, the battery module still includes: the first end plate is arranged at the first ends of the plurality of electric core groups, the first end plate is abutted against the mounting plates of the plurality of cooling plates, and a plurality of first avoidance holes for avoiding joints are formed in the first end plate; the second end plate sets up in a plurality of electric core group second ends, and the second end plate is provided with a plurality of seconds of dodging the joint and dodges the hole with the mounting panel butt of a plurality of cooling plates on the second end plate.

Further, still be provided with the screw rod on the mounting panel, set up on the first end plate and correspond a plurality of first mounting holes that set up with the screw rod, be provided with on the second end plate and correspond a plurality of second mounting holes that set up with the screw rod, the battery module still includes the lock nut with first end plate and second end plate fastening on the cooling plate.

Furthermore, a plurality of first mounting grooves are formed in the first end plate, the first mounting grooves and the cooling plates are arranged in a one-to-one correspondence mode, the first ends of the cooling plates extend into the first mounting grooves, the first avoidance holes and the first mounting holes penetrate through the bottom wall of the first mounting groove, the end wall of each cooling plate is abutted against the bottom wall of the first mounting groove, and the side wall of each cooling plate is abutted against the side wall of the corresponding first mounting groove; and/or be provided with a plurality of second mounting grooves on the second end plate, a plurality of second mounting grooves set up with a plurality of cooling plates one-to-one, in the second end of cooling plate stretched into the second mounting groove, the second was dodged hole and second mounting hole and was run through the tank bottom wall of second mounting groove, the end wall of cooling plate and the diapire butt of second mounting groove, the lateral wall of cooling plate and the groove lateral wall butt of second mounting groove.

According to the utility model discloses an on the other hand provides a battery package, include: a housing; the battery module is arranged in the shell and is the battery module.

Use the technical scheme of the utility model, battery module include a plurality of cooling plates, and a plurality of cooling plate intervals set up, and the electric core group sets up between two adjacent cooling plates. The cooling plate has a cooling channel therein and an inlet and an outlet in communication with the cooling channel. The cooling medium can enter from the import, flows out from the export behind the cooling channel, carries out the heat transfer with the electric core group. The cooling structure in the battery pack is formed by the plurality of cooling plates in the setting mode, and compared with the cooling structure arranged at the bottom of the battery module in the background art, the height of the battery pack is reduced by the setting mode, and the space in a passenger compartment is increased. On the other hand, the heat transfer distance between the cooling plate and the electric core group is shortened, so that the cooling effect of the cooling plate is greatly improved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a battery module according to the present invention;

fig. 2 is a schematic view illustrating an exploded structure of the battery module of fig. 1;

fig. 3 is a perspective view illustrating a cooling plate of the battery module of fig. 1;

fig. 4 is a perspective view illustrating an embodiment of a first end plate of the battery module of fig. 1;

fig. 5 is a perspective view illustrating an example of a second end plate of the battery module of fig. 1; and

fig. 6 shows a schematic perspective view of an embodiment of a battery pack according to the present invention.

Wherein the figures include the following reference numerals:

1. a plate group; 10. a cooling plate; 11. a housing; 12. mounting a plate; 13. a joint; 14. a screw; 20. the electric core group; 30. a first end plate; 31. a first mounting hole; 32. a first mounting groove; 33. a first avoidance hole; 40. a second end plate; 41. a second mounting hole; 42. a second mounting groove; 43. a second avoidance hole; 50. a housing; 60. a battery module is provided.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be discussed further in subsequent figures.

As shown in fig. 1 and 2, an embodiment of a battery module of the present application includes: a plurality of cooling plates 10 arranged at intervals and a plurality of electric core groups 20. An electric core group 20 is arranged between two adjacent cooling plates 10; wherein, a cooling channel extending along the length direction of the electric core group 20 is arranged in the cooling plate 10, and an inlet and an outlet communicated with the cooling channel are also arranged on the cooling plate 10.

By applying the technical scheme of the embodiment, the battery module comprises a plurality of cooling plates 10 which are arranged at intervals, and the electric core group 20 is arranged between two adjacent cooling plates 10. The cooling plate 10 has cooling channels therein and inlets and outlets communicating with the cooling channels. The cooling medium can enter from the inlet, flow out from the outlet after passing through the cooling channel, and exchange heat with the electric core group 20. The cooling structure in the battery pack is formed by the plurality of cooling plates 10 in the arrangement mode, and compared with the cooling structure arranged at the bottom of the battery module in the background art, the arrangement mode reduces the height of the battery pack on one hand and is beneficial to increasing the space in a passenger compartment. On the other hand, the heat transfer distance between the cooling plate 10 and the electric core group 20 is shortened, so that the cooling effect of the cooling plate 10 is greatly improved.

Of course, a heat medium may also be circulated through the cooling plate 10 of the present application to heat the electric core assembly 20 in a cold condition.

As shown in fig. 1 and fig. 2, in the present embodiment, a plurality of cooling plates 10 form a plurality of plate groups 1, each plate group 1 includes a plurality of cooling plates 10, and the cooling passages of the plurality of cooling plates 10 in the same plate group 1 are arranged in communication. In the above-mentioned structure, in same plate group 1, in cooling medium can enter into second cooling plate 10 after flowing through first cooling plate 10, this kind of mode of setting up makes cooling medium can carry out abundant heat transfer with electric core group 20, is favorable to promoting cooling medium's utilization ratio.

It should be noted that in the present embodiment, each plate group 1 includes two cooling plates 10, and the battery module of the present embodiment includes three plate groups 1 in total. The three plate groups are arranged along the width direction of the electric core group, and one electric core group is arranged between two adjacent cooling plates 10. The flowing directions of the cooling medium in the cooling plates 10 on both sides of each electric core group 20 are different, so that the cooling plates 10 realize uniform heat dissipation to the electric core group 20.

As shown in fig. 1 and 2, in the present embodiment, the cooling channels of the plurality of cooling plates 10 in different plate groups 1 are independently provided. In the above structure, the cooling plates 10 in different plate groups 1 are not communicated, and the cooling medium pipeline of each plate group 1 is independently arranged. The cooling medium flows into the first cooling plate 10 in the plate package 1 before it enters the second cooling plate 10 in the plate package 1, and the cooling medium is discharged without entering the other plate packages. This kind of mode of setting up can guarantee on the one hand that coolant and electric core group 20 carry out abundant heat exchange, can restrict coolant's circulation route's length again simultaneously, guarantees that coolant can not excessively heat up, influences the cooling effect to electric core group 20.

In order to facilitate communication between the cooling plates 10 in the same plate group 1, as shown in fig. 1 and 2, in this embodiment, the battery module further includes a plurality of communication pipes, and each communication pipe communicates corresponding ends of two adjacent cooling plates 10 in the same plate group 1. The above structure enables the two cooling plates 10 in the same plate group 1 to be communicated with each other, and the cooling passages of the plurality of cooling plates 10 in the same plate group 1 to be provided independently of the cooling passages in the other plate groups 1. The above-mentioned "corresponding ends" refer to the same side ends of the two cooling plates 10.

As shown in fig. 1 and 2, in the present embodiment, the battery module further includes: a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is arranged at the second end of the electric core group 20, and comprises a liquid inlet main pipe and a plurality of liquid inlet branch pipes communicated with the liquid inlet main pipe, and each liquid inlet branch pipe is communicated with an inlet of the cooling plate 10; the liquid outlet pipe is disposed at the second end of the electric core assembly 20, and includes a main liquid outlet pipe and a plurality of branch liquid outlet pipes communicated with the main liquid outlet pipe, and each branch liquid outlet pipe is communicated with the outlet of the cooling plate 10. In the structure, the plurality of liquid inlet branch pipes and the plurality of plate groups 1 are arranged in a one-to-one correspondence manner, the cooling medium liquid inlet main pipe flows into the liquid inlet branch pipes and then flows into the plate groups 1 from the liquid inlet branch pipes, and then flows into the first cooling plate 10, the communicating pipe and the second cooling plate 10 in sequence, and the cooling medium flows into the liquid outlet main pipe from the liquid outlet branch pipe, so that the circulation of the cooling medium is realized. Above-mentioned mode can guarantee on the one hand that coolant and electric core group 20 carry out abundant heat exchange, can restrict coolant's circulation route's length again simultaneously, guarantees that coolant can not excessively heat up, has guaranteed the cooling effect of cooling plate 10 to electric core group 20.

As shown in fig. 3, in the present embodiment, the cooling plate 10 includes: a housing 11 and two mounting plates 12. Wherein, a cooling channel is arranged in the shell 11; two mounting plates 12 are provided at the first and second ends of the housing 11, respectively, each mounting plate 12 being provided with a joint 13 communicating with the cooling channel. The structure can ensure the circulation of the cooling channel, and further improve the cooling effect of the cooling plate 10 on the electric core group 20.

As shown in fig. 1 and 3, in the present embodiment, the cooling plate 10 further includes reinforcing ribs that are provided in the cooling passage and extend in the longitudinal direction of the housing 11. The strength of the cooling plate 10 can be improved by the structure, so that the probability of breakage of the cooling plate 10 is reduced, and the safety of the battery module is improved. In addition, the arrangement of the reinforcing ribs in the cooling channel can increase the contact area between the housing 11 and the cooling medium, so that the cooling medium and the cooling plate 10 can exchange heat quickly, and the cooling efficiency of the cooling plate 10 is improved.

As shown in fig. 4 and 5, in the present embodiment, the battery module further includes: a first end plate 30 and a second end plate 40. The first end plate 30 is arranged at the first end of the plurality of electric core groups 20, the first end plate 30 is abutted against the mounting plates 12 of the plurality of cooling plates 10, and the first end plate 30 is provided with a plurality of first avoidance holes 33 for avoiding the joints 13; the second end plate 40 is arranged at the second end of the plurality of electric core groups 20, the second end plate 40 is abutted against the mounting plates 12 of the plurality of cooling plates 10, and the second end plate 40 is provided with a plurality of second avoiding holes 43 avoiding the joints 13. In the above configuration, the first end plate 30 and the second end plate 40 can have an effect of limiting the plurality of cooling plates 10. Specifically, the first end plate 30 is provided with a first avoiding hole 33, the second end plate 40 is provided with a second avoiding hole 43 correspondingly, the joint 13 at the first end of the cooling plate 10 extends into the first avoiding hole 33, the joint 13 at the second end of the cooling plate 10 extends into the second avoiding hole 43, and the hole wall of the first avoiding hole 33 and the hole wall of the second avoiding hole 43 can limit the cooling plate 10. Make first end plate 30 and second end plate 40 can carry on spacingly to a plurality of cooling plates 10 through above-mentioned mode, still install electric core group 20 between the adjacent cooling plate 10, rethread follow-up step is in the same place a plurality of cooling plates 10 and first end plate 30 and second end plate 40 are fixed, forms the higher battery module of integrated level, is favorable to the equipment of battery module.

As shown in fig. 1 to 3, in the present embodiment, the mounting plate 12 is further provided with a screw 14, the first end plate 30 is provided with a plurality of first mounting holes 31 corresponding to the screw 14, the second end plate 40 is provided with a plurality of second mounting holes 41 corresponding to the screw 14, and the battery module further includes a lock nut for fastening the first end plate 30 and the second end plate 40 to the cooling plate 10. In the above structure, the locking nuts can fix the first end plate 30 and the second end plate 40 at the end of the cooling plate 10, and the first end plate 30, the second end plate 40, the electric core pack 20 and the cooling plate 10 are connected in this way, so as to assemble the battery module.

It should be noted that the electric core pack 20 and the cooling plate 10 are adhesively connected to each other, so as to improve the fastening of the battery module. In addition, the first and second mounting holes 31 and 41 are counter bored holes into which lock nuts can be screwed along the screws 14 to crimp the first and second end plates 30 and 40 to both ends of the cooling plate 10.

As shown in fig. 3, in the present embodiment, a plurality of first mounting grooves 32 are provided on the first end plate 30, the plurality of first mounting grooves 32 are provided in one-to-one correspondence with the plurality of cooling plates 10, the first end of the cooling plate 10 extends into the first mounting groove 32, the first avoiding hole 33 and the first mounting hole 31 penetrate through the bottom wall of the first mounting groove 32, the end wall of the cooling plate 10 abuts against the bottom wall of the first mounting groove 32, and the side wall of the cooling plate 10 abuts against the side wall of the first mounting groove 32. In the above-mentioned structure, in mounting panel 12 of cooling plate 10 can stretch into first mounting groove 32, the cell lateral wall of first mounting groove 32 can play spacing effect to cooling plate 10, when cooling plate 10 has the trend towards electric core group 20 or the direction of keeping away from electric core group 20 removes, the cell lateral wall of first mounting groove 32 can carry out the backstop to mounting panel 12 to it is spacing to form cooling plate 10.

Correspondingly, as shown in fig. 4, a plurality of second mounting grooves 42 are provided on the second end plate 40, the plurality of second mounting grooves 42 are provided in one-to-one correspondence with the plurality of cooling plates 10, the second ends of the cooling plates 10 extend into the second mounting grooves 42, the second avoiding holes 43 and the second mounting holes 41 penetrate through the bottom wall of the second mounting grooves 42, the end wall of the cooling plate 10 abuts against the bottom wall of the second mounting groove 42, and the side wall of the cooling plate 10 abuts against the side wall of the second mounting groove 42. In the above-mentioned structure, in mounting panel 12 of cooling plate 10 can stretch into second mounting groove 42, the groove lateral wall of second mounting groove 42 can play spacing effect to cooling plate 10, when cooling plate 10 has the trend towards electric core group 20 or the direction of keeping away from electric core group 20 removes, the groove lateral wall of second mounting groove 42 can carry out the backstop to mounting panel 12 to it is spacing to form cooling plate 10. The simultaneous arrangement of the first mounting groove 32 and the second mounting groove 42 can achieve a better effect of restricting the movement of the cooling plate 10.

Of course, in other embodiments not shown in the figures, it is also possible to provide only the first mounting groove 32 on the first end plate 30, or only the second mounting groove 42 on the second end plate 40.

As shown in fig. 6, the present application further provides a battery pack, and an embodiment of the battery pack of the present application includes: the battery module 60 is disposed in the housing 50, and the battery module 60 is the above-mentioned battery module. In the structure, the battery module has the advantages of reducing the height of the battery pack and having a good cooling effect on the electric core group, so that the battery pack with the battery module has the advantages of low height and good cooling effect.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery module, comprising:

a plurality of cooling plates (10) arranged at intervals;

a plurality of electric core groups (20), wherein one electric core group (20) is arranged between two adjacent cooling plates (10);

the cooling plate (10) is internally provided with a cooling channel extending along the length direction of the electric core group (20), and the cooling plate (10) is also provided with an inlet and an outlet communicated with the cooling channel.

2. The battery module according to claim 1, wherein a plurality of the cooling plates (10) form a plurality of plate groups (1), each of the plate groups (1) includes a plurality of the cooling plates (10), and the cooling passages of the plurality of the cooling plates (10) in the same plate group (1) are arranged in communication.

3. The battery module according to claim 2,

the cooling channels of a plurality of cooling plates (10) in different plate groups (1) are independently arranged; and/or, the battery module still includes:

and each communication pipe is communicated with corresponding ends of two adjacent cooling plates (10) in the same plate group (1).

4. The battery module according to claim 1, further comprising:

the liquid inlet pipe is arranged at the second end of the electric core group (20), the liquid inlet pipe comprises a liquid inlet main pipe and a plurality of liquid inlet branch pipes communicated with the liquid inlet main pipe, and each liquid inlet branch pipe is communicated with an inlet of the cooling plate (10);

the drain pipe is arranged at the second end of the electric core group (20), the drain pipe comprises a main liquid outlet pipe and a plurality of liquid outlet branch pipes communicated with the main liquid outlet pipe, and each liquid outlet branch pipe is communicated with the outlet of the cooling plate (10).

5. The battery module according to claim 1, wherein the cooling plate (10) comprises:

a housing (11), wherein a cooling channel is arranged in the housing (11);

two mounting panels (12), set up respectively in the first end and the second end of casing (11), every all be provided with on mounting panel (12) with joint (13) of cooling channel intercommunication.

6. The battery module according to claim 5, wherein the cooling plate (10) further comprises:

and reinforcing ribs arranged in the cooling channel and extending along the length direction of the shell (11).

7. The battery module according to claim 5, further comprising:

the first end plate (30) is arranged at the first end of the electric core groups (20), the first end plate (30) is abutted against the mounting plate (12) of the cooling plates (10), and a plurality of first avoidance holes (33) for avoiding the joints (13) are formed in the first end plate (30);

second end plate (40), set up in a plurality of electric core group (20) second end, second end plate (40) and a plurality of cooling plate (10) mounting panel (12) butt, be provided with a plurality of dodges on second end plate (40) hole (43) are dodged to the second of joint (13).

8. The battery module according to claim 7, wherein the mounting plate (12) is further provided with a screw (14), the first end plate (30) is provided with a plurality of first mounting holes (31) corresponding to the screw (14), the second end plate (40) is provided with a plurality of second mounting holes (41) corresponding to the screw (14), and the battery module further comprises a lock nut for fastening the first end plate (30) and the second end plate (40) to the cooling plate (10).

9. The battery module according to claim 8,

the first end plate (30) is provided with a plurality of first mounting grooves (32), the first mounting grooves (32) are in one-to-one correspondence with the cooling plates (10), the first ends of the cooling plates (10) extend into the first mounting grooves (32), the first avoiding holes (33) and the first mounting holes (31) penetrate through the bottom walls of the first mounting grooves (32), the end walls of the cooling plates (10) are abutted to the bottom walls of the first mounting grooves (32), and the side walls of the cooling plates (10) are abutted to the side walls of the first mounting grooves (32); and/or

Be provided with a plurality of second mounting grooves (42) on second end plate (40), it is a plurality of second mounting groove (42) and a plurality of cooling plate (10) one-to-one sets up, the second end of cooling plate (10) stretches into in second mounting groove (42), the second dodge hole (43) with second mounting hole (41) run through the tank bottom wall of second mounting groove (42), the end wall of cooling plate (10) with the diapire butt of second mounting groove (42), the lateral wall of cooling plate (10) with the groove lateral wall butt of second mounting groove (42).

10. A battery pack, comprising:

a housing (50);

a battery module (60) disposed within the housing (50), wherein the battery module (60) is the battery module of any one of claims 1-9.

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