Battery module and battery pack

Abstract

The utility model discloses a battery module and a battery pack. The battery module comprises a plurality of battery cells, two end plate assemblies and a switching assembly, the plurality of battery cells are arranged along the thickness direction, each battery cell comprises a main body part and an electrode terminal, the electrode terminal extends out of the main body part along the height direction of the battery cell, and the height direction is vertical to the thickness direction. The two end plate assemblies are respectively arranged on two sides of the plurality of battery cells along the thickness direction, each end plate assembly comprises an end plate and a fixed seat, the end part of the end plate along the height direction is provided with an accommodating cavity, the fixed seat comprises a first part and a second part which are connected with each other, the first part is detachably inserted into the accommodating cavity, and the second part exceeds the end plate along the height direction. The switching assembly and the plurality of battery cells are arranged along the height direction, and the switching assembly is electrically connected with the electrode terminals of the plurality of battery cells. The second part comprises a base body, and the base body is located between the switching assembly and the end plate in the height direction and connected to the switching assembly and the end plate.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and in particular to a battery module and battery pack. Background Technology

[0002] Battery modules are the power units of new energy power systems, and they are generally composed of battery cells, adapter components, and end plate components. Among them, the adapter components are used to electrically connect the electrode terminals of each battery cell, so that multiple battery cells can be connected in series and / or in parallel.

[0003] With the continuous development of the electrochemical energy storage industry, the assembly requirements for battery modules are becoming increasingly stringent. For example, the integration and space utilization of battery modules are constantly improving. However, the more compact the space of the battery module, the more likely electrical safety issues will arise, which will affect the safety of the battery module in use. Utility Model Content

[0004] One object of this application is to provide a battery module that aims to improve the electrical safety of the battery module.

[0005] To achieve the above objectives, this application provides a solution as follows: A battery module includes multiple battery cells, two end plate assemblies, and an adapter assembly. The multiple battery cells are arranged along their thickness direction. Each battery cell includes a main body and an electrode terminal. The electrode terminal extends beyond the main body along the height direction of the battery cell, which is perpendicular to the thickness direction. The two end plate assemblies are respectively disposed on both sides of the multiple battery cells along the thickness direction. Each end plate assembly includes an end plate and a mounting base. The end plate has a receiving cavity at its end along the height direction. The mounting base includes a first part and a second part connected to each other. The first part is detachably inserted into the receiving cavity, and the second part extends beyond the end plate along the height direction. The adapter assembly and the multiple battery cells are arranged along the height direction, and the adapter assembly is electrically connected to the electrode terminals of the multiple battery cells. The second part includes a substrate located between the adapter assembly and the end plate along the height direction and connected to the adapter assembly and the end plate.

[0006] Optionally, the accommodating cavity extends along the height direction; the end plate is provided with a first limiting hole, the first limiting hole extends in a direction perpendicular to the height direction and communicates with the accommodating cavity; the first part includes a first insertion part and a first limiting part, the first insertion part connects the first limiting part and the base, the first insertion part is inserted into the accommodating cavity, and the first limiting part is detachably inserted into the first limiting hole.

[0007] Optionally, the first insertion part is made of plastic; under the action of external force, the first insertion part can deform relative to the substrate, so that the first limiting part separates from the first limiting hole.

[0008] Optionally, the first part further includes a second insertion part, which is connected to the base. The second insertion part and the first insertion part are located on the same side of the base along the height direction. The second insertion part is connected to the side wall of the accommodating cavity. The second insertion part and the first insertion part are separate and can move relative to each other under the action of external force.

[0009] Optionally, the second part further includes a first extension, which is connected to the base and extends along the height direction toward a direction away from the end plate.

[0010] Optionally, the second part further includes a second extension, which is connected to the substrate and extends along the height direction toward a direction away from the end plate; the second extension and the first extension are arranged at intervals along the width direction of the cell, the width direction being perpendicular to the thickness direction and the height direction.

[0011] Optionally, along the width direction, at least a portion of the structure of the adapter assembly is sandwiched between the first extension and the second extension.

[0012] Optionally, the fixing base further includes a third part, which is connected to the base and extends along the height direction away from the first extension; the third part, the sidewall of the receiving cavity, and the receiving cavity are arranged along the thickness direction.

[0013] Optionally, the first part and the second part are made of plastic; the end plate assembly also includes fasteners that connect the base and the adapter assembly.

[0014] This application also provides a solution: a battery pack, the battery pack comprising the battery module described in any of the foregoing embodiments.

[0015] The beneficial effects of this application are as follows: a fixing seat is provided on the end plate, the base of the fixing seat connects the adapter component and the end plate, the fixing seat provides support and limit for the adapter component, so that there is a relatively safe electrical distance between the adapter component and the battery cell, thereby improving the electrical safety of the battery module; at the same time, the fixing seat is detachably inserted into the receiving cavity of the end plate through its first part, so that the fixing seat and the end plate can be detachably connected, which facilitates installation and subsequent maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a partial structural schematic diagram of the battery module provided in the embodiments of this application;

[0018] Figure 2 yes Figure 1 Exploded view of the structure shown;

[0019] Figure 3 This is a schematic diagram of the endplate assembly provided in an embodiment of this application;

[0020] Figure 4 yes Figure 3 Exploded view of the structure shown;

[0021] Figure 5 This is a schematic diagram of the structure of the fixing base provided in the embodiment of this application;

[0022] Figure 6 This is a schematic diagram of the structure of the fixing base provided in the embodiment of this application;

[0023] Figure 7 This is a cross-sectional view of the end plate provided in an embodiment of this application;

[0024] Figure 8 This is a schematic diagram of the battery pack provided in the embodiments of this application.

[0025] Reference numerals in the attached figures: Battery pack 100, Battery module 10, Battery cell 11, Main body 111, Electrode terminal 112, End plate assembly 12, End plate 121, Receiving cavity 1211, First limiting hole 1212, Fixing base 122, First part 1221, First insertion part 12211, Second insertion part 12212, First limiting part 12213, Second part 1222, Base 12221, First extension part 12222, Second extension part 12223, Third part 1223, Embedded part 123, Adapter assembly 13, Thickness direction X, Width direction Y, Height direction Z. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] like Figure 1 and Figure 2 As shown, an embodiment of this application provides a battery module 10, which includes a plurality of battery cells 11, two end plate assemblies 12 and an adapter assembly 13.

[0028] Multiple battery cells 11 are arranged along their thickness direction X. Two end plate assemblies 12 are respectively disposed on both sides of the multiple battery cells 11 along the thickness direction X. The two end plate assemblies 12 clamp and limit the multiple battery cells 11, which can not only limit the movement of the multiple battery cells 11, but also suppress the expansion of the multiple battery cells 11, thereby extending the service life of the multiple battery cells 11 in the battery module 10.

[0029] Each battery cell 11 includes a main body 111 and an electrode terminal 112. The electrode terminal 112 extends out of the main body 111 along the height direction Z of the battery cell 11, wherein the height direction Z is perpendicular to the thickness direction X. The main body 111 includes a battery cell housing and an electrode assembly. The electrode assembly is disposed inside the battery cell housing and is connected to the electrode terminal 112.

[0030] The adapter assembly 13 and the plurality of battery cells 11 are arranged along the height direction Z. The adapter assembly 13 and the electrode terminals 112 are located on the same side of the main body 111. The adapter assembly 13 is electrically connected to the electrode terminals 112 of the plurality of battery cells 11, so that the plurality of battery cells 11 are electrically connected.

[0031] It should be noted that the thickness direction X, height direction Z, and width direction Y mentioned below refer to the thickness direction X, height direction Z, and width direction Y of the battery cell 11, where the thickness direction X, height direction Z, and width direction Y are all perpendicular to each other.

[0032] In one embodiment, the adapter assembly 13 includes copper busbars and / or aluminum busbars (not shown) for connecting electrode terminals 112.

[0033] In one embodiment, the two endplate assemblies 12 may have identical structures. In another embodiment, the two endplate assemblies 12 may have different structures.

[0034] The following section will take any one of the endplate components 12 as an example to illustrate it in detail.

[0035] like Figures 1 to 4 As shown, in one embodiment, the end plate assembly 12 includes an end plate 121 located outside the plurality of cells 11 along the thickness direction X, for providing support force to the cells 11 along the thickness direction X, thereby restricting their movement and expansion.

[0036] In one embodiment, the end plate assembly 12 further includes a fixing seat 122, which is connected to the end of the end plate 121 along the height direction Z. The fixing seat 122 includes a base 12221, which is located between the adapter assembly 13 and the end plate 121 along the height direction Z and is connected to the adapter assembly 13 and the end plate 121. The base 12221 can provide support and connection force for the adapter assembly 13, so that the adapter assembly 13 and the end plate 121 are connected together at a distance, thereby ensuring a relatively safe electrical distance between the adapter assembly 13 and the electrode terminal 112, which is beneficial to improving the electrical safety of the battery module 10.

[0037] In one embodiment, the mounting base 122 is detachably connected to the end plate 121, which not only facilitates the assembly of the end plate assembly 12, but also facilitates subsequent disassembly and maintenance.

[0038] like Figure 2 , Figures 4 to 6 As shown, in one embodiment, the end plate 121 has a receiving cavity 1211 at its end along the height direction Z. The orientation of the receiving cavity 1211 is the same as the orientation of the electrode terminal 112 extending out of the main body 111. The fixing base 122 includes a first part 1221 and a second part 1222 connected to each other. The first part 1221 is detachably inserted into the receiving cavity 1211, and the second part 1222 extends beyond the end plate 121 along the height direction Z. The second part 1222 is used to connect the adapter assembly 13 to support the adapter assembly 13. The detachable insertion between the first part 1221 and the receiving cavity 1211 enables a detachable connection between the fixing base 122 and the end plate 121, which is beneficial for assembly and subsequent disassembly and maintenance.

[0039] In one embodiment, the substrate 12221 is located in the second portion 1222.

[0040] In one embodiment, the accommodating cavity 1211 extends along the height direction Z. Furthermore, the end plate 121 is provided with a first limiting hole 1212, which extends in a direction perpendicular to the height direction Z and communicates with the accommodating cavity 1211.

[0041] The first part 1221 includes a first insertion part 12211 and a first limiting part 12213. The first insertion part 12211 connects the first limiting part 12213 and the base 12221. The first insertion part 12211 is inserted into the receiving cavity 1211, and the first limiting part 12213 is detachably inserted into the first limiting hole 1212. The first limiting part 12213 inserted into the first limiting hole 1212 can realize the connection limiting between the fixing base 122 and the end plate 121, and restrict the relative movement between the fixing base 122 and the end plate 121 in the height direction Z. The first insertion part 12211 is inserted into the receiving cavity 1211 extending in the height direction Z, which is beneficial to restrict the movement between the fixing base 122 and the end plate 121 in the direction perpendicular to the height direction Z, and improve the connection stability between the fixing base 122 and the end plate 121.

[0042] Simultaneously, by releasing the insertion state between the first limiting part 12213 and the first limiting hole 1212, the fixing state between the fixing seat 122 and the end plate 121 can be released. At this time, by pulling the fixing seat 122 along the height direction Z, the first insertion part 12211 can be pulled out of the receiving cavity 1211, thereby releasing the assembly relationship between the fixing seat 122 and the end plate 121, allowing them to separate. When the first insertion part 12211 is inserted into the receiving cavity 1211, the first limiting part 12213 is moved to a suitable position for insertion. At this time, the fixing seat 122 and the end plate 121 are fixedly connected together. The above connection and disassembly steps between the fixing seat 122 and the end plate 121 are simple, convenient, and easy to operate, which helps to improve the assembly efficiency of the battery module 10.

[0043] In one embodiment, the first insertion portion 12211 is made of plastic. Under external force, the first insertion portion 12211 can deform relative to the base 12221, causing the first limiting portion 12213 to separate from the first limiting hole 1212. By designing the material of the first insertion portion 12211, it is possible for the first insertion portion 12211 to deform relative to the base 12221 under external force, thereby causing the first limiting portion 12213 to separate from the first limiting hole 1212. This operation method is simple and convenient, and helps to reduce the manufacturing cost of the fixing base 122.

[0044] In one embodiment, both the first portion 1221 and the second portion 1222 are made of plastic. The first portion 1221 and the second portion 1222 are integrally molded using an injection molding process, which helps reduce the manufacturing cost of the mounting base 122 and its weight, thus minimizing the impact of the mounting base 122's weight on the battery module 10. Furthermore, the plastic material of the first portion 1221 and the second portion 1222 helps reduce the risk of short circuits in the battery module 10.

[0045] In one embodiment, the first part 1221 further includes a second insertion part 12212, which is connected to the base 12221 and is located on the same side of the base 12221 along the height direction Z as the first insertion part 12211. The second insertion part 12212 is also inserted into the receiving cavity 1211. By simultaneously inserting both insertion parts (the first insertion part 12211 and the second insertion part 12212) into the receiving cavity 1211, it is beneficial to improve the connection stability between the fixing seat 122 and the end plate 121.

[0046] In one embodiment, the second insertion part 12212 is connected to the side wall of the receiving cavity 1211. Through the interaction between the second insertion part 12212 and the side wall of the receiving cavity 1211, it is beneficial to restrict the movement between the fixing seat 122 and the end plate 121 in the direction perpendicular to the height Z, thereby improving the connection stability between the fixing seat 122 and the end plate 121.

[0047] In one embodiment, the second insertion part 12212 and the first insertion part 12211 are separated and can move relative to each other under the action of an external force. By squeezing the first insertion part 12211 with an external force (such as a user's finger), the first insertion part 12211 and the second insertion part 12212 deform towards each other, which allows the first limiting part 12213 to leave the first limiting hole 1212, thereby contacting the limiting state between the first limiting part 12213 and the first limiting hole 1212, releasing the limiting state between the fixing seat 122 and the end plate 121. This operation is simple, convenient and easy to operate.

[0048] In one embodiment, the first insertion portion 12211 and the second insertion portion 12212 are arranged along the thickness direction X, and the first limiting portion 12213 extends along the thickness direction X in a direction away from the second insertion portion 12212. The first limiting hole 1212 penetrates the side wall of the receiving cavity 1211 along the thickness direction X. When both the first insertion portion 12211 and the second insertion portion 12212 are inserted into the receiving cavity 1211 and the first limiting portion 12213 is inserted into the first limiting hole 1212, the first insertion portion 12211 and the second insertion portion 12212 abut against two opposite side walls of the receiving cavity 1211 along the thickness direction X, which helps to improve the connection stability between the fixing seat 122 and the end plate 121.

[0049] In one embodiment, the first insertion portion 12211 and the second insertion portion 12212 are arranged along the width direction Y, and the first limiting portion 12213 extends along the width direction Y in a direction away from the second insertion portion 12212. The first limiting hole 1212 penetrates the side wall of the receiving cavity 1211 along the width direction Y. When both the first insertion portion 12211 and the second insertion portion 12212 are inserted into the receiving cavity 1211 and the first limiting portion 12213 is inserted into the first limiting hole 1212, the first insertion portion 12211 and the second insertion portion 12212 respectively abut against two opposite side walls of the receiving cavity 1211 along the width direction Y, which helps to improve the connection stability between the fixing seat 122 and the end plate 121.

[0050] In one embodiment, a second limiting part (not shown) is provided on the second insertion part 12212, and a second limiting hole (not shown) is provided on the side wall of the receiving cavity 1211 opposite to the second insertion part 12212. When the second insertion part 12212 is inserted into a preset position in the receiving cavity 1211, the second limiting part is inserted into the second limiting hole. By having the first insertion part 12211 and the second insertion part 12212, which are opposite to each other, inserted into the corresponding limiting holes, it is beneficial to further improve the connection stability between the fixing base 122 and the end plate 121.

[0051] In one embodiment, the cross-section of the first insertion portion 12211 or the second insertion portion 12212 can be a plate-like structure, an arc-shaped structure, or other irregularly shaped structures; this application does not impose specific limitations on it. The cross-section refers to the cross-section perpendicular to the height direction Z.

[0052] In one embodiment, along the height direction Z, the accommodating cavity 1211 penetrates the end plate 121 (e.g. Figure 7 As shown, this not only helps to reduce the weight of the end plate 121 and reduce the impact of the weight of the end plate 121 on the battery module 10, but also helps to simplify the processing and manufacturing process of the end plate 121 and save its manufacturing cost.

[0053] In one embodiment, the second portion 1222 further includes a first extension 12222, which is connected to the base 12221 and extends along the height direction Z toward a direction away from the end plate 121. By providing the first extension 12222, it is beneficial to increase the electrical creepage distance, thereby improving the electrical safety of the battery module 10.

[0054] Furthermore, the second part 1222 also includes a second extension 12223, which is connected to the base 12221 and extends along the height direction Z toward the end plate 121. By simultaneously providing the first extension 12222 and the second extension 12223, it is beneficial to further increase the electrical creepage distance, thereby improving the electrical safety of the battery module 10.

[0055] In one embodiment, a first extension 12222 and a second extension 12223 are arranged at intervals along the width direction Y. A gap is formed between the first extension 12222 and the second extension 12223, and at least a portion of the structure of the adapter assembly 13 is sandwiched within the gap between the first extension 12222 and the second extension 12223. The first extension 12222 and the second extension 12223 can cooperate to form a guide and positioning mechanism, which is beneficial for assembling the adapter assembly 13 and the fixing base 122. Furthermore, the first extension 12222 and the second extension 12223 can also cooperate to form a clamping limit, which is beneficial for restricting the movement between the adapter assembly 13 and the end plate assembly 12 along the width direction Y, thereby improving the connection stability between the adapter assembly 13 and the end plate assembly 12.

[0056] In one embodiment, the end plate assembly 12 further includes a fastener (not shown) that connects the base 12221 and the adapter assembly 13, such that the adapter assembly 13 is fixedly connected to the mounting base 122.

[0057] In one embodiment, the fastener is a screw.

[0058] In one embodiment, the end plate assembly 12 further includes an embedded part 123, which is made of metal and is embedded in the base 12221. A portion of the fastener passes through the adapter assembly 13 and connects to the embedded part 123, thereby fixing the adapter assembly 13 to the fixing seat 122. This improves the connection stability between the adapter assembly 13 and the fixing seat 122. Furthermore, by providing the embedded part 123, it is also beneficial to reduce the impact of fastener removal on the fixing seat 122 during repeated fastener assembly and disassembly.

[0059] In one embodiment, the embedded part 123 is an embedded nut. Furthermore, the embedded nut is pre-embedded in the base 12221 by injection molding, which helps to improve the assembly efficiency of the end plate assembly 12 and the connection strength between the embedded part 123 and the fixing seat 122, and reduces the risk of the embedded part 123 detaching from the fixing seat 122.

[0060] In one embodiment, the mounting base 122 further includes a third portion 1223, which is connected to the base 12221 and extends along the height direction Z in a direction away from the first extension portion 12222. The third portion 1223 and the first insertion portion 12211 are located on the same side of the base 12221 along the height direction Z. By providing the third portion 1223, it is beneficial to further increase the electrical creepage distance and improve the electrical safety of the battery module 10.

[0061] In one embodiment, along the thickness direction X, the third portion 1223, a sidewall of the receiving cavity 1211, and the receiving cavity 1211 are arranged together, with the sidewall of the receiving cavity 1211 sandwiched between the third portion 1223 and the second insertion portion 12212. This embodiment helps to further restrict movement between the fixing base 122 and the end plate 121 along the thickness direction X, improving the connection stability between the fixing base 122 and the end plate 121.

[0062] In one embodiment, the third part 1223 is integrally formed with the first part 1221 and the second part 1222 by injection molding.

[0063] like Figure 8 As shown, this application also provides a solution: a battery pack 100, which includes the battery module 10 of any of the foregoing embodiments.

[0064] In summary, in the battery module 10 of this application, a fixing seat 122 is provided on the end plate 121. The base 12221 of the fixing seat 122 connects the adapter component 13 and the end plate 121. The fixing seat 122 provides support and limit for the adapter component 13, so that there is a relatively safe electrical distance between the adapter component 13 and the battery cell 11, thereby improving the electrical safety of the battery module 10. At the same time, the fixing seat 122 is detachably inserted into the receiving cavity 1211 of the end plate 121 through its first part 1221, so that the fixing seat 122 and the end plate 121 can be detachably connected, which facilitates installation and subsequent maintenance.

[0065] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0066] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0067] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0068] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the content of this application's specification and drawings under the concept of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery module, characterized in that, include: A plurality of battery cells are arranged along their thickness direction. Each battery cell includes a main body and an electrode terminal. The electrode terminal extends out of the main body along the height direction of the battery cell, and the height direction is perpendicular to the thickness direction. Two end plate assemblies are respectively disposed on both sides of the plurality of cells along the thickness direction. Each end plate assembly includes an end plate and a fixing base. The end plate is provided with a receiving cavity at its end along the height direction. The fixing base includes a first part and a second part that are connected to each other. The first part is detachably inserted into the receiving cavity, and the second part extends beyond the end plate along the height direction. An adapter assembly and the plurality of battery cells are arranged along the height direction. The adapter assembly is electrically connected to the electrode terminals of the plurality of battery cells. The second part includes a substrate located between the adapter assembly and the end plate along the height direction and connected to the adapter assembly and the end plate.

2. The battery module according to claim 1, characterized in that, The accommodating cavity extends along the height direction; The end plate is provided with a first limiting hole, which extends in a direction perpendicular to the height direction and communicates with the receiving cavity; The first part includes a first insertion part and a first limiting part. The first insertion part connects the first limiting part and the base. The first insertion part is inserted into the receiving cavity. The first limiting part is detachably inserted into the first limiting hole.

3. The battery module according to claim 2, characterized in that, The first insertion part is made of plastic; Under the action of external force, the first insertion part can deform relative to the base body, so that the first limiting part separates from the first limiting hole.

4. The battery module according to claim 2, characterized in that, The first part further includes a second insertion part, which is connected to the base. The second insertion part and the first insertion part are located on the same side of the base along the height direction. The second insertion part is connected to the side wall of the receiving cavity. The second insertion part is separate from the first insertion part and can move relative to each other under the action of external force.

5. The battery module according to any one of claims 1 to 4, characterized in that, The second part further includes a first extension, which is connected to the base and extends along the height direction toward a direction away from the end plate.

6. The battery module according to claim 5, characterized in that, The second part further includes a second extension, which is connected to the base and extends along the height direction toward a direction away from the end plate; The second extension and the first extension are arranged at intervals along the width direction of the battery cell, and the width direction is perpendicular to the thickness direction and the height direction.

7. The battery module according to claim 6, characterized in that, Along the width direction, at least a portion of the structure of the adapter assembly is sandwiched between the first extension and the second extension.

8. The battery module according to claim 5, characterized in that, The fixing base further includes a third part, which is connected to the base and extends along the height direction away from the first extension. Along the thickness direction, the third part, the sidewall of the accommodating cavity, and the accommodating cavity are arranged in a specific configuration.

9. The battery module according to any one of claims 1 to 4, characterized in that, The first and second parts are made of plastic. The endplate assembly also includes fasteners that connect the base and the adapter assembly.

10. A battery pack, characterized in that, The battery pack includes the battery module as described in any one of claims 1 to 9.

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