Protective base assembly, battery module and battery pack

Abstract

The utility model discloses a protective base assembly, a battery module and a battery pack, the protective base assembly is arranged on an end plate of the battery module, the protective base assembly comprises a base body, one end face of the base body is a mounting face, the mounting face is used for being connected with a copper bar and a current guide bar of the battery module, and the current guide bar is arranged on the base body. One end, deviating from the mounting surface, of the base body is connected with the end plate, and the mounting angle on the end plate is adjustable; the protection part is connected to the mounting surface and extends along the outer periphery of the mounting surface, the protection part is provided with a notch used for avoiding the copper bar, and a detachable window part is arranged in the notch. According to the protective base assembly provided by the utility model, the orientation of the notch on the protective part is adjustable, so that the protective base assembly can adapt to copper bars installed at different angles, the universality of the protective base assembly is improved, the mold cost is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, and in particular to a protective base component, a battery module and a battery pack. Background Art

[0002] In the related art, since both the guide bar and the copper bar are conductors and are high-voltage devices, an insulating protection device mainly made of insulating material (such as plastic) is provided at the connection between the two, and is also used to provide a support and fixing platform for the connection between the guide bar and the copper bar. However, the insulating protection device has poor versatility and needs to replace different molds, which is costly. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a protective base assembly, which improves the versatility of the protective base assembly, reduces mold costs, and thus reduces production costs.

[0004] The utility model also provides a battery module, comprising the above-mentioned protective base assembly.

[0005] The utility model also provides a battery pack, comprising the above-mentioned battery module.

[0006] According to the protective base assembly of the embodiment of the utility model, the protective base assembly is arranged on the end plate of the battery module, and the protective base assembly includes: a base body, one end surface of the base body is a mounting surface, and the mounting surface is used to connect with the copper busbar and the guide busbar of the battery module, and the end of the base body facing away from the mounting surface is connected to the end plate and the mounting angle on the end plate is adjustable; a protective part, the protective part is connected to the mounting surface and extends along the outer periphery of the mounting surface, the protective part has a notch for avoiding the copper busbar, and a detachable window part is provided in the notch.

[0007] According to the protective base assembly of the embodiment of the utility model, the mounting surface of the base body is connected to the copper busbar and the guide busbar of the battery module, the protective part is connected to the mounting surface and extends along the outer periphery of the mounting surface, the protective part has a notch for avoiding the copper busbar, the end of the base body facing away from the mounting surface is connected to the end plate and the mounting angle on the end plate is adjustable, so that the direction of the notch on the protective part is adjustable, so as to adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly, reducing mold costs, and thus reducing production costs.

[0008] In some embodiments of the utility model, the window piece is spaced apart from the inner wall of the notch, and connecting ribs are provided between the outer peripheral wall of the window piece and the inner wall of the notch. The connecting ribs are multiple and spaced apart in the length direction of the inner contour line of the notch, and the window piece is removed from the notch by breaking the connecting ribs.

[0009] In some embodiments of the present invention, the protective base assembly further includes: a limit member, which is disposed on the end plate, and one end of the base body facing away from the mounting surface is connected to the limit member and the mounting angle between the end and the limit member is adjustable.

[0010] In some embodiments of the utility model, a limiting protrusion is provided on one of the limiting member and the base body, and a groove cooperating with the limiting protrusion is provided on the other, a plurality of external gear teeth spaced apart along the circumferential direction of the limiting protrusion are provided on the outer peripheral wall of the limiting protrusion, a plurality of internal gear teeth spaced apart along the circumferential direction of the groove are provided on the inner peripheral wall of the groove, and the plurality of internal gear teeth cooperate with the plurality of external gear teeth.

[0011] In some embodiments of the present invention, the cross section of the limiting protrusion is circular, and the outer contour of the cross section of the groove is circular.

[0012] In some embodiments of the present invention, the end plate has a mounting hole, and at least a portion of the limiting member is located in the mounting hole.

[0013] In some embodiments of the present invention, the cross-section of the mounting hole is a polygon, and the cross-section of the limiting member is a polygon that matches the mounting hole.

[0014] In some embodiments of the present invention, the mounting surface has a connecting hole, and the fastener is passed through the copper busbar and the guide busbar and then connected to the connecting hole; and / or the cross-section of the protective portion is a polygon.

[0015] The battery module according to the embodiment of the utility model includes the above-mentioned protective base assembly.

[0016] According to the battery module of the embodiment of the utility model, by setting the above-mentioned protective base assembly, the mounting surface of the base body is connected to the copper busbar and the guide busbar of the battery module, the protective part is connected to the mounting surface and extends along the outer periphery of the mounting surface, and the protective part has a notch for avoiding the copper busbar. The end of the base body facing away from the mounting surface is connected to the end plate and the mounting angle on the end plate is adjustable, so that the direction of the notch on the protective part is adjustable, so as to adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly, reducing mold costs, and thus reducing production costs.

[0017] A battery pack according to an embodiment of the present invention includes the above-mentioned battery module.

[0018] According to the battery pack of the embodiment of the utility model, by setting the above-mentioned battery module and the above-mentioned protective base assembly, the mounting surface of the base body is connected to the copper busbar and the guide busbar of the battery module, the protective part is connected to the mounting surface and extends along the outer periphery of the mounting surface, the protective part has a notch for avoiding the copper busbar, the end of the base body facing away from the mounting surface is connected to the end plate and the mounting angle on the end plate is adjustable, so that the direction of the notch on the protective part is adjustable, so as to adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly, reducing mold costs, and thus reducing production costs.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 is a partial stereoscopic view of a battery module according to an embodiment of the utility model, wherein the installation connection between the end plate and the protective base assembly is shown;

[0022] Figure 2 is an exploded view of a protective base assembly according to an embodiment of the utility model;

[0023] Figure 3 It is an exploded cross-sectional view of a protective base assembly according to an embodiment of the utility model.

[0024] Reference numerals:

[0025] 100. Battery module;

[0026] 10. Protective base assembly;

[0027] 1. Base body; 11. Mounting surface; 12. Groove; 121. Internal gear; 13. Connection hole;

[0028] 2. Protective part; 21. Notch; 22. Window member; 23. Connecting rib;

[0029] 3. Limiting member; 31. Limiting protrusion; 311. External gear;

[0030] 20. end plate; 201. mounting hole. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference below Figure 1-Figure 3 A protective base assembly 10 according to an embodiment of the present invention is described.

[0035] like Figure 1 and Figure 2 As shown, according to the protective base assembly 10 of the embodiment of the utility model, the protective base assembly 10 is arranged on the end plate 20 of the battery module 100, and the protective base assembly 10 includes a base body 1 and a protective part 2.

[0036] Specifically, refer to Figure 2 and Figure 3One end face of the base body 1 is a mounting surface 11, and the mounting surface 11 is used to connect with the copper busbar (not shown) and the guide busbar (not shown) of the battery module 100. One end of the base body 1 facing away from the mounting surface 11 is connected to the end plate 20, and the mounting angle on the end plate 20 is adjustable; the protective part 2 is connected to the mounting surface 11 and extends along the outer periphery of the mounting surface 11. The protective part 2 has a notch 21 for avoiding the copper busbar, and a detachable window member 22 is provided in the notch 21.

[0037] It can be understood that the end plate 20 is located on the outside of the battery cell (not shown) at the end of the battery module 100, and the battery cells are electrically connected by means of a metal guide bar, and on the battery cell closest to the end plate 20, at least one guide bar extending out of the battery cell is provided, and the partial structure of the guide bar extending out of the battery cell extends above the end plate 20 and is located on the mounting surface 11, and is used to be electrically connected to one end of the copper busbar to form the output pole of the battery module 100, and the other end of the copper busbar is used to be electrically connected to the guide bar in another battery module 100, thereby establishing an electrical connection relationship between the battery modules 100.

[0038] Furthermore, if Figure 2 and Figure 3 As shown, the protective portion 2 extends along the outer periphery of the mounting surface 11, so as to provide insulation protection for the copper busbar and the guide busbar. At the same time, the notch 21 on the protective portion 2 can avoid the copper busbar, so that the copper busbar can be smoothly arranged on the mounting surface 11 and connected to the guide busbar. When the copper busbar is not installed, a window member 22 is provided at the notch 21 to block the notch 21, so that the protective portion 2 can provide insulation protection for the guide busbar. When the copper busbar needs to be installed, since the window member 22 is detachable, the copper busbar can be smoothly arranged on the mounting surface 11 and connected to the guide busbar.

[0039] Since the installation angles of the copper busbars are different in different battery modules, the orientation of the notch on the protective part needs to be re-set to adapt to the copper busbars with different installation angles. This process requires redesigning the mold of the protective base assembly and producing it. In the present invention, the installation angle of the base body 1 on the end plate 20 is adjustable, so that the orientation of the notch 21 on the protective part 2 is adjustable, so that it can adapt to the copper busbars installed at different angles, thereby improving the versatility of the protective base assembly 10, reducing the mold cost, and thus reducing the production cost.

[0040] According to the protective base assembly 10 of the embodiment of the utility model, the mounting surface 11 of the base body 1 is connected to the copper busbar and the guide busbar of the battery module 100, the protective part 2 is connected to the mounting surface 11 and extends along the outer periphery of the mounting surface 11, and the protective part 2 has a notch 21 for avoiding the copper busbar. The end of the base body 1 facing away from the mounting surface 11 is connected to the end plate 20 and the mounting angle on the end plate 20 is adjustable, so that the direction of the notch 21 on the protective part 2 is adjustable, so as to adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly 10, reducing mold costs, and thus reducing production costs.

[0041] In some embodiments of the present invention, Figure 2 As shown, the window member 22 is spaced apart from the inner wall of the notch 21, and connecting ribs 23 are provided between the outer peripheral wall of the window member 22 and the inner wall of the notch 21. The connecting ribs 23 are multiple and spaced apart along the length direction of the inner contour line of the notch 21. The window member 22 is disassembled from the notch 21 by breaking the connecting ribs 23.

[0042] It can be understood that the multiple connecting ribs 23 can improve the connection reliability between the window piece 22 and the inner wall of the notch 21, thereby reducing the occurrence of accidental touching of the window piece 22 causing the window piece 22 to fall, thereby improving the insulation protection performance of the protective base assembly 10. At the same time, the multiple connecting ribs 23 are spaced apart, making the connecting ribs 23 easy to break, thereby improving the portability of disassembling the window piece 22 and making it more labor-saving when disassembling the window piece 22.

[0043] For example, Figure 2 In the example shown, there are four connecting ribs 23 , but the present invention is not limited thereto, and the number of the connecting ribs 23 may be more or less, for example, 3, 5, 6 or 7.

[0044] In some embodiments of the present invention, Figure 1 and Figure 3 The protective base assembly 10 also includes a limit member 3, which is arranged on the end plate 20, and one end of the base body 1 away from the mounting surface 11 is connected to the limit member 3 and the mounting angle between the limit member 3 and the limit member 3 is adjustable.

[0045] It can be understood that the base body 1 is connected to the end plate 20 through the limit member 3, the limit member 3 and the end plate 20 are relatively fixed, and the end of the base body 1 facing away from the mounting surface 11 is connected to the limit member 3 and the mounting angle between the limit member 3 is adjustable, thereby achieving an adjustable mounting angle between the base body 1 and the end plate 20, so that the direction of the notch 21 on the protective part 2 is adjustable, so that it can adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly 10, reducing mold costs, and thus reducing production costs.

[0046] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, one of the limiting member 3 and the base body 1 is provided with a limiting protrusion 31, and the other is provided with a groove 12 that cooperates with the limiting protrusion 31, the outer peripheral wall of the limiting protrusion 31 is provided with a plurality of external gear teeth spaced along the circumferential direction of the limiting protrusion 31, and the inner peripheral wall of the groove 12 is provided with a plurality of internal gear teeth spaced along the circumferential direction of the groove 12, and the plurality of internal gear teeth cooperate with the plurality of external gear teeth.

[0047] It can be understood that, through the cooperation between the limiting protrusion 31 and the groove 12, the movement between the limiting member 3 and the base body 1 along the radial direction of the base body 1 is limited, thereby improving the installation reliability and fixing reliability between the limiting member 3 and the base body 1. In addition, after the limiting member 3 and the base body 1, the limiting member 3 and the end plate 20 are relatively fixed, and through the cooperation between multiple inner gear teeth and multiple outer gear teeth, the limiting member 3 and the base body 1 are relatively fixed, thereby improving the installation reliability and fixing reliability between the limiting member 3 and the end plate 20.

[0048] At the same time, after adjusting the installation angle between the base body 1 and the limiter 3, the base body 1 can still be connected to the limiter 3 through the cooperation of multiple inner gears and multiple outer gears, so that the installation angle between the base body 1 and the limiter 3 is adjustable, so that the direction of the notch 21 on the protective part 2 is adjustable, so that it can adapt to copper bars installed at different angles, thereby improving the versatility of the protective base assembly 10, reducing mold costs, and thus reducing production costs. At the same time, it is achieved that after installation, the base body 1 and the limiter 3 can remain relatively fixed with the limiter 3, so that the base body 1 can be relatively fixed with the end plate 20.

[0049] For example, Figure 2 and Figure 3 In the example shown, the base body 1 is provided with a groove 12 and the limiting member 3 is provided with a limiting protrusion 31 , but the utility model is not limited thereto, and the base body 1 may also be provided with a limiting protrusion 31 and the limiting member 3 may be provided with a groove 12 .

[0050] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, the cross section of the limiting protrusion 31 is circular, and the outer contour of the cross section of the groove 12 is circular. Thus, the matching efficiency of the limiting protrusion 31 and the groove 12 is improved, thereby improving the installation efficiency of the limiting member 3 and the base body 1, and at the same time, the installation angle between the base body 1 and the limiting member 3 can be better adjusted, and the range of installation angle adjustment is increased.

[0051] In some embodiments of the present invention, Figure 1As shown, the end plate 20 has a mounting hole 201, and at least a portion of the stopper 3 is located in the mounting hole 201. It can be understood that at least a portion of the stopper 3 is located in the mounting hole 201, so that the volume of the battery module 100 can be reduced, and by at least a portion of the stopper 3 being located in the mounting hole 201, the movement of the stopper 3 along the radial direction of the mounting hole 201 can be limited, thereby improving the fixing effect of the stopper 3 and the end plate 20.

[0052] In some embodiments of the present invention, Figure 1 As shown, the cross section of the mounting hole 201 is a polygon, and the cross section of the stopper 3 is a polygon that matches the mounting hole 201. Thus, the stopper 3 can be restricted from rotating relative to the end plate 20 around the axis of the stopper 3, and at the same time, when the stopper 3 is connected to the base body 1, the stopper 3 can restrict the base body 1 from rotating around the axis of the stopper 3, so that when the base body 1 is connected to the stopper 3, the base body 1 can be fixed relative to the end plate 20, thereby improving the installation reliability between the protective base assembly 10 and the end plate 20.

[0053] For example, Figure 1 In the example shown, the cross-section of the mounting hole 201 is a quadrilateral, and the cross-section of the limiting member 3 is also a quadrilateral, but the utility model is not limited to this. The cross-section of the mounting hole 201 and the cross-section of the limiting member 3 can be other polygons, such as a triangle, a pentagon, a hexagon or an octagon.

[0054] In some embodiments of the present invention, Figure 3 As shown, the mounting surface 11 is provided with a connection hole 13, and the fastener is inserted through the copper bar and the guide bar and connected to the connection hole 13, thereby facilitating the disassembly and installation between the copper bar, the guide bar and the protective base assembly 10. It can be understood that when one of the limiting member 3 and the base body 1 is provided with a limiting protrusion 31, and the other is provided with a groove 12 that cooperates with the limiting protrusion 31, the outer peripheral wall of the limiting protrusion 31 is provided with a plurality of external gear teeth spaced along the circumferential direction of the limiting protrusion 31, and the inner peripheral wall of the groove 12 is provided with a plurality of internal gear teeth spaced along the circumferential direction of the groove 12. When the plurality of internal gear teeth cooperate with the plurality of external gear teeth, there is a gap between the internal gear 121 and the external gear 311. In order to reduce the gap when the fastener is installed, the limiting member 3 and the base body 1 Since relative rotation is generated due to the gap between the inner gear 121 and the outer gear 311, when installing the limit member 3 and the base body 1, the inner gear 121 and the outer gear 311 need to stop and cooperate with each other, and when the fastener is installed, the fastener rotates in the direction of the mutual stop between the inner gear 121 and the outer gear 311, thereby reducing the relative rotation between the limit member 3 and the base body 1 due to the gap between the inner gear 121 and the outer gear 311 when the fastener is installed, thereby improving the installation reliability of the protective base assembly 10.

[0055] In addition, if Figure 2 As shown, when a groove 12 is provided in the base body 1 , the groove 12 is spaced apart from the connecting hole 13 in the axial direction of the connecting hole 13 , thereby avoiding installation interference between the fastener and the limiting protrusion 31 .

[0056] Furthermore, if Figure 1 and Figure 2 As shown, the cross section of the protection part 2 is a polygon, so that the structure of the protection part 2 is more regular, which is conducive to the setting of the notch 21, and is conducive to avoiding copper bars with different installation angles. Figure 2 In the example shown, the cross section of the protection portion 2 is a quadrilateral, but the present invention is not limited thereto, and the cross section of the protection portion 2 may be other polygons, such as a triangle, a pentagon, a hexagon, or an octagon.

[0057] Please refer to the following Figure 1 A battery module 100 according to an embodiment of the present invention is described.

[0058] like Figure 1 As shown, the battery module 100 according to the embodiment of the present invention includes the above-mentioned protective base assembly 10.

[0059] According to the battery module 100 of the embodiment of the utility model, by setting the above-mentioned protective base assembly 10, the mounting surface 11 of the base body 1 is connected to the copper busbar and the guide busbar of the battery module 100, the protective part 2 is connected to the mounting surface 11 and extends along the outer periphery of the mounting surface 11, and the protective part 2 has a notch 21 for avoiding the copper busbar. The end of the base body 1 facing away from the mounting surface 11 is connected to the end plate 20 and the mounting angle on the end plate 20 is adjustable, so that the direction of the notch 21 on the protective part 2 is adjustable, so as to adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly 10, reducing mold costs, and thus reducing production costs.

[0060] A battery pack according to an embodiment of the present invention is described below.

[0061] The battery pack according to the embodiment of the present invention includes the above-mentioned battery module 100 .

[0062] According to the battery pack of the embodiment of the utility model, by setting the above-mentioned battery module 100 and the above-mentioned protective base assembly 10, the mounting surface 11 of the base body 1 is connected to the copper busbar and the guide busbar of the battery module 100, the protective part 2 is connected to the mounting surface 11 and extends along the outer periphery of the mounting surface 11, and the protective part 2 has a notch 21 for avoiding the copper busbar. The end of the base body 1 facing away from the mounting surface 11 is connected to the end plate 20 and the mounting angle on the end plate 20 is adjustable, so that the notch 21 on the protective part 2 is adjustable in direction, so as to adapt to copper busbars installed at different angles, thereby improving the versatility of the protective base assembly 10, reducing mold costs, and thus reducing production costs.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A protective base assembly, characterized in that: The protective base assembly is arranged on the end plate of the battery module, and the protective base assembly comprises: A base body, one end surface of the base body being a mounting surface, the mounting surface being used to connect with the copper busbar and the guide busbar of the battery module, the end of the base body facing away from the mounting surface being connected with the end plate and the mounting angle on the end plate being adjustable; The protection part is connected to the installation surface and extends along the outer periphery of the installation surface. The protection part has a notch for avoiding the copper busbar, and a detachable window member is arranged in the notch.

2. The protective base assembly according to claim 1, characterized in that: The window piece is spaced apart from the inner wall of the notch, and connecting ribs are provided between the outer peripheral wall of the window piece and the inner wall of the notch. The connecting ribs are multiple and spaced apart along the length direction of the inner contour line of the notch, and the window piece is removed from the notch by breaking the connecting ribs.

3. The protective base assembly according to claim 1, characterized in that: Also includes: A limiting member is arranged on the end plate, and one end of the base body which is away from the mounting surface is connected to the limiting member and the mounting angle between the base body and the limiting member is adjustable.

4. The protective base assembly according to claim 3, characterized in that: A limiting protrusion is provided on one of the limiting member and the base body, and a groove cooperating with the limiting protrusion is provided on the other. A plurality of external gear teeth spaced apart along the circumferential direction of the limiting protrusion are provided on the outer peripheral wall of the limiting protrusion, and a plurality of internal gear teeth spaced apart along the circumferential direction of the groove are provided on the inner peripheral wall of the groove, and the plurality of internal gear teeth cooperate with the plurality of external gear teeth.

5. The protective base assembly according to claim 4, characterized in that: The cross section of the limiting protrusion is circular, and the outer contour of the cross section of the groove is circular.

6. The protective base assembly according to claim 3, characterized in that: The end plate has a mounting hole, and at least a portion of the limiting member is located in the mounting hole.

7. The protective base assembly according to claim 6, characterized in that: The cross section of the mounting hole is a polygon, and the cross section of the limiting member is a polygon matching the mounting hole.

8. The protective base assembly according to claim 1, characterized in that: The mounting surface is provided with a connection hole, and the fastener is passed through the copper bar and the guide bar and then connected to the connection hole; And / or, the cross section of the protection portion is polygonal.

9. A battery module, characterized in that: It comprises a protective base assembly according to any one of claims 1-8.

10. A battery pack, characterized in that: Comprising the battery module according to claim 9.

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