End plate, battery module and battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to an end plate, and further relates to a battery module comprising the end plate and a battery pack comprising the battery module, the end plate is used for fixing a battery cell group, and the end plate is provided with a high-voltage mounting position for fixing a conducting bar. At least one low-voltage mounting unit for mounting a low-voltage device is arranged on one side, deviating from the battery cell, of the end plate, and the end plate is configured to be electrically insulated, so that the mounting of the conducting bar can be realized without additionally mounting a high-voltage electric connecting support and an insulating sheet; in addition, the low-voltage mounting unit is arranged on the end plate, so that a low-voltage connector can be conveniently integrated on the end plate, a low-voltage socket does not need to be additionally arranged in the battery box body, the number of parts of the battery module is further reduced, and the low-voltage mounting unit is arranged on one side deviating from the battery core, so that the operation and the mounting are convenient; the integrated design also effectively simplifies the installation process of the conducting bar and the low-voltage connector, and effectively reduces the production cost of the battery module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to an end plate, further relates to a battery module comprising the end plate, and still further relates to a battery pack comprising the battery module. BACKGROUND

[0002] A battery module is generally composed of a plurality of stacked battery cells, end insulation sheets, metal end plates, high-voltage electrical connection supports, low-voltage output supports, and other connecting structures, the end plate is generally located on both sides of the stacked direction of the battery cells, the battery cells are connected into a whole through the two sides of the conductive bars, and are finally connected with the high-voltage wire harness at the position of the end plate.

[0003] The battery module generally needs to lead the conductive bars to the end plate to facilitate external high-voltage wiring; since the metal end plate has electrical conductivity, in order to reduce the risk of electric shock when installing the high-voltage conductive bars, a high-voltage electrical connection support and an insulation sheet that play an insulating role are generally installed on the metal end plate to assist in connecting the conductive bars; in addition, the battery module also needs to install a low-voltage socket to assist in the connection and fixation of the FPC and the low-voltage connector, so the number of components of the entire battery module is relatively large, the structure is complex, the installation process is relatively cumbersome, and the actual production cost is relatively high. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to provide an end plate, a battery module and a battery pack, which can realize integrated installation of the conductive bars and the low-voltage devices, simplify the installation process, and reduce the production cost of the battery module.

[0005] In order to achieve one of the aforementioned purposes, according to one aspect of the present application, an end plate is provided for fixing a battery cell group, the end plate is configured with a high-voltage mounting position for fixing a conductive bar, at least one low-voltage mounting unit for installing a low-voltage device is arranged on the side of the end plate away from the battery cell, and the end plate is configured to be electrically insulated.

[0006] Specifically, by arranging the high-voltage mounting position on the end plate, the conductive bar can be directly fixed on the end plate, since the end plate is configured to be electrically insulated, it is not necessary to additionally install a high-voltage electrical connection support and an insulation sheet, so as to realize the installation of the conductive bar; in addition, by arranging the low-voltage mounting unit on the end plate, the low-voltage device can be integrated on the end plate, it is not necessary to additionally arrange a low-voltage socket inside the battery box, so as to save the number of components of the battery module, the low-voltage mounting unit arranged on the side away from the battery cell is convenient for workers to operate and install, the integrated design effectively simplifies the installation process of the high-voltage conductive bar and the low-voltage device, and further effectively reduces the production cost of the battery module.

[0007] In addition to one or more of the above, or as an alternative, in further embodiments, the low-voltage mounting unit comprises a plurality of penetrating members arranged on the side of the end plate facing away from the battery cell and used for penetrating the insulation plate, and a plurality of clamping members arranged below the penetrating members and used for clamping the bottom of the insulation plate, and the FPC and the low-voltage connector are sequentially fixed and attached to the outer wall of the insulation plate.

[0008] In addition to one or more of the above, or as an alternative, in further embodiments, the penetrating members are configured as four and correspondingly distributed at the four corners of the insulation plate, and the clamping members are configured as two and both abut the outer wall of the bottom of the insulation plate.

[0009] In addition to one or more of the above, or as an alternative, in further embodiments, the penetrating members are configured as hot-melt columns, and / or the clamping members are configured as buckles.

[0010] In addition to one or more of the above, or as an alternative, in further embodiments, the low-voltage mounting unit is provided in two groups, and the two groups of low-voltage mounting units are symmetrically distributed relative to the central axis of the end plate.

[0011] In addition to one or more of the above, or as an alternative, in further embodiments, the high-voltage mounting position comprises a bearing surface configured on the top of the end plate and provided with at least one mounting hole, and a groove provided on the side of the end plate close to the battery cell and used for accommodating the conductive bar, and the output pole of the conductive bar is fixed and crimped to the bearing surface.

[0012] In addition to one or more of the above, or as an alternative, in further embodiments, a nut whose top surface exceeds the bearing surface is embedded inside the mounting hole, and a fixing member is sequentially penetrated in the conductive bar and the nut to realize the fixation of the output pole of the conductive bar.

[0013] In addition to one or more of the above, or as an alternative, in further embodiments, the end plate is provided with an accommodation groove at the top end for accommodating the conductive bar, and the bearing surface is formed on the bottom surface of the accommodation groove.

[0014] In addition to one or more of the above, or as an alternative, in further embodiments, the accommodation groove is internally provided with a shielding member used for shielding the output pole of the conductive bar.

[0015] In addition to one or more of the above, or as an alternative, in further embodiments, the end plate further comprises a metal insert internally hollow and fixedly penetrated in the end plate, and the metal pipe insert is configured for penetrating the bolt to fix the end plate to the battery box.

[0016] In addition to one or more of the above, or as an alternative, in further embodiments, the metal insert is internally provided with a waist-shaped hole, and a center axis of the waist-shaped hole is closer to the side of the end plate facing away from the battery cell than to the side of the end plate facing the battery cell.

[0017] In addition to one or more of the above, or as an alternative, in further embodiments, the side of the end plate facing away from the battery cell is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are vertically staggered.

[0018] In addition to one or more of the above, or as an alternative, in further embodiments, the side of the end plate facing away from the battery cell is provided with at least one cable tie groove for accommodating a battery module fixing cable tie.

[0019] In addition to one or more of the above, or as an alternative, in further embodiments,

[0020] To achieve one of the aforementioned objects, according to another aspect of the present application, there is also provided a battery module, comprising: a plurality of battery cells stacked in sequence, and two end plates as described in the foregoing aspect attached to the outer walls of the two battery cells at the outermost sides in the stacking direction.

[0021] To achieve one of the aforementioned objects, according to another aspect of the present application, there is also provided a battery module, comprising: a plurality of battery cells stacked in sequence, and two end plates as described in the foregoing aspect attached to the outer walls of the two battery cells at the outermost sides in the stacking direction.

[0022] Compared with the prior art, the utility model has the advantages that: the high-voltage mounting position is arranged on the end plate, the high-voltage busbar can be directly fixed on the end plate, the end plate is electrically insulated, so that the high-voltage busbar can be installed without high-voltage electrical connection support and insulating sheet, the high-voltage busbar is convenient for high-voltage wire harness connection, the low-voltage mounting unit is arranged on the end plate, the low-voltage connector can be integrated on the end plate, the low-voltage socket is not arranged in the battery box, the number of parts of the battery module is saved, the low-voltage mounting unit is arranged on the side facing away from the battery cell, which is convenient for workers to operate and install, the integrated design simplifies the installation process of the high-voltage busbar, the low-voltage connector and the FPC, and the production cost of the battery module is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] The disclosure of the present application will be more readily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of the present application.

[0024] In the drawings:

[0025] Figure 1A three-dimensional structural diagram of the end plate provided by this utility model;

[0026] Figure 2 A partial three-dimensional structural view of the low-voltage mounting unit position of the end plate provided by this utility model;

[0027] Figure 3 A partial three-dimensional structural view of the high-voltage mounting position of the end plate provided by this utility model;

[0028] Figure 4 A three-dimensional structural view of the end plate provided by this utility model from another perspective;

[0029] Figure 5 A three-dimensional structural diagram of the end plate, the mounting FPC, the low-voltage connector, and the conductive busbar provided by this utility model.

[0030] Figure 6 for Figure 5 Enlarged view of a section at point C;

[0031] Figure 7 for Figure 5 Enlarged view of a section at point D;

[0032] Figure 8 A three-dimensional structural view of the mounting FPC, low-voltage connector, and conductive busbar of the end plate provided by this utility model from another perspective.

[0033] Figure 9 A three-dimensional structural diagram of a module provided by this utility model.

[0034] In the attached diagram: 1-End plate, 11-Receiving groove, 12-Shielding component, 13-Metal insert, 131-Oval hole, 14-Reinforcing rib, 15-Cable tie groove, 2-Low-voltage mounting unit, 21-Through-connecting component, 22-Snap-fit ​​component, 3-Conductive busbar, 4-High-voltage mounting position, 41-Supporting surface, 42-Groove, 43-Mounting hole, 5-Insulating plate, 6-FPC, 7-Low-voltage connector. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0036] In the embodiments of the present application, the terms "first", "second" are only used for descriptive purpose and should not be construed as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0037] In addition, in the embodiments of the present application, the orientation terms such as "upper", "lower", "left" and "right" are defined with respect to the orientation of the components shown in the drawings, and it should be understood that these directional terms are relative concepts, which are used for relative description and clarification, and can be changed accordingly according to the change of the orientation of the components placed in the drawings.

[0038] In the embodiments of the present application, unless otherwise explicitly specified and limited, the term "connection" should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral; can be directly connected, or indirectly connected through intermediate medium.

[0039] In the embodiments of the present application, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0040] In the embodiments of the present application, the words such as "exemplary" or "for example" are used to mean an example, illustration, or description. Any embodiment or design scheme described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. Rather, the words such as "exemplary" or "for example" are intended to present the relevant concept in a specific manner.

[0041] With reference to the prior art, the conductive row of the battery module usually needs to be led out to the end plate position after connecting the battery cell, so as to facilitate external wiring. Since the end plate is usually made of metal material, an insulating sheet needs to be arranged between the end plate and the conductive row, and a high-voltage socket is arranged at the output pole position of the conductive row, which is used for assisting the installation of the conductive row, thereby causing the leading-out structure of the conductive row to have more parts and the installation process to be more complex.

[0042] In addition, existing battery modules require the use of low-voltage sockets to install and fix the FPC and low-voltage connectors when installing them. This involves many components and a complex installation process, resulting in high actual production costs and making it difficult to meet user needs. Therefore, the end plate proposed in this application aims to solve the above-mentioned technical problems.

[0043] Figure 1 This is a perspective view of an end plate 1 according to one embodiment of the present application. The end plate 1 can be used to fix a battery cell assembly. The end plate 1 is configured with a high-voltage mounting position 4 for fixing a conductive busbar 3. At least one low-voltage mounting unit 2 for mounting low-voltage devices is provided on the side of the end plate 1 away from the battery cell. The end plate 1 is configured to be electrically insulated.

[0044] It is not difficult to see that, reference Figures 1-6 By setting a high-voltage mounting position 4 on the end plate 1, it is easy to directly fix the conductive busbar 3 on the end plate 1. Since the end plate 1 is constructed to be electrically insulated, there is no need to install a separate high-voltage connection support and insulating sheet to achieve the installation of the conductive busbar 3. In addition, by setting a low-voltage mounting unit 2 on the end plate 1, it is easy to integrate the low-voltage connector 7 into the end plate 1. There is no need to set a separate low-voltage socket inside the battery box, thereby saving the number of parts in the battery module. The low-voltage mounting unit 2 is located on the side away from the battery cell, which also makes it easier for workers to operate and install. The integrated design also effectively simplifies the installation process of the conductive busbar 3, low-voltage connector 7 and FPC6, thereby effectively reducing the production cost of the battery module.

[0045] It should be noted that the aforementioned low-voltage device is the low-voltage output terminal of the battery module, specifically including a low-voltage connector and part of the FPC. The low-voltage mounting unit 2 set on the end plate 1 facilitates the fixing of the low-voltage connector 7 on the side of the end plate 1 away from the battery cell, and can also fix the end of the FPC, thereby effectively saving the low-voltage socket and reducing the number of parts.

[0046] The following will illustrate further specific implementations or refinements of the board enclosure assembly through exemplary description, in order to further improve it or for other improvement considerations.

[0047] Further reference Figure 2 and Figure 6 The low-voltage mounting unit 2 includes: a plurality of through-connection components 21 disposed on the side of the end plate 1 away from the battery cell and used for through-connecting the insulation plate 5; and a plurality of snap-fit ​​components 22 disposed below the through-connection components 21 and used for snap-fitting the bottom of the insulation plate 5. The FPC 6 and the low-voltage connector 7 are sequentially fixed and attached to the outer wall of the insulation plate 5.

[0048] It can be known that by arranging the penetrating member 21 on the side of the end plate 1 away from the battery cell, the penetrating member 21 is convenient for penetrating and fixing the insulating plate 5, and the clamping member 22 can realize the clamping and fixing of the bottom thereof, thereby providing a mounting basis for the low-voltage connector 7. The insulating plate 5, the FPC 6 and the low-voltage connector 7 are sequentially fixed outside the insulating plate 5 through the low-voltage mounting unit 2, thereby omitting the low-voltage socket, saving parts, reducing the mounting process of the low-voltage connector 7, and further reducing the installation cost of the battery module.

[0049] Further, referring to Figure 2 , the penetrating member 21 is configured as four and is correspondingly distributed at four corners of the insulating plate 5, and the clamping member 22 is configured as two and abuts the outer wall at the bottom of the insulating plate 5.

[0050] It can be seen that by arranging the penetrating member 21 as four and distributing it at four corners of the insulating plate 5, a hole can be first formed on the insulating plate 5, and then the penetrating member 21 is penetrated to provide initial positioning, and then the two clamping members 22 at the bottom are abutted to the outer wall at the bottom of the insulating plate 5 to realize effective fixing. The structure is simple, the clamping structure makes the installation and operation more convenient, and has strong practicability.

[0051] Illustratively, the penetrating member 21 is configured as a hot melt column, and / or the clamping member 22 is configured as a buckle.

[0052] It should be noted that the above low-voltage mounting unit 2 can also be other quick mounting mechanism arranged on the end plate 1, as long as it can realize the clamping and fixing of the insulating plate 5 to facilitate the installation of the FPC 6 and the low-voltage connector 7. The specific structure thereof can be selected as needed, and the present embodiment is not limited in detail.

[0053] Illustratively, the above insulating plate 5 can preferably be an FR4, i.e. a Flame Retardant board, which has inherent insulation properties, good flame retardancy, high mechanical strength, excellent electrical insulation, excellent thermal stability, low moisture absorption and non-flammable properties. The FPC 6 and the low-voltage connector 7 can be effectively installed. The above insulating plate 5 can also be other insulating materials, and the present embodiment is not limited in detail.

[0054] In one case of the present embodiment, referring to Figure 1 , the low-voltage mounting unit 2 is provided with two groups, and the two groups of low-voltage mounting units 2 are symmetrically distributed relative to the center axis of the end plate 1.

[0055] It can be seen that by arranging the low-voltage mounting units 2 into two groups, the low-voltage output terminals can be placed on the same side of the battery module, facilitating the wiring of the system end, saving space of the system end, and improving the grouping efficiency of the system end.

[0056] For example, the end plate 1 is integrally injection molded by high-strength plastic.

[0057] It can be seen that by using high-strength plastic to make the end plate 1, the weight of the battery module can be greatly reduced compared with the traditional metal end plate, and the energy density of the battery module can be improved.

[0058] Specifically, the end plate 1 can effectively resist the swelling force at the end of the life of the battery cell, thereby helping to improve the safety and reliability of the battery module. Of course, if the swelling force at the end of the life of the battery cell exceeds the preset swelling force, a thin steel plate can be embedded in the middle of the end plate 1 during injection molding, thereby significantly improving the overall structural strength of the insulated end plate 1. The specific material and molding method of the end plate 1 can be selected as needed, and this embodiment is not limited in this regard.

[0059] In another case of the present embodiment, referring to Figures 3-7 , the high-voltage mounting position 4 includes a supporting surface 41 configured on the top of the end plate 1 and having at least one mounting hole 43, and a groove 42 configured on the side of the end plate 1 close to the battery cell and used to accommodate the conductive bar 3, and the output pole of the conductive bar 3 is fixedly crimped to the supporting surface 41.

[0060] It can be seen that by arranging the supporting surface 41 on the top of the end plate 1, the output pole of the conductive bar 3 can be fixedly crimped thereon. Since the end plate 1 is made of insulating material, there is no need to arrange a high-voltage socket and an insulating sheet, and the output pole of the conductive bar 3 can be effectively mounted and fixed, thereby saving the number of parts and reducing the production cost of the battery module.

[0061] In addition, by arranging the groove 42 on the side of the end plate 1 close to the battery cell, the conductive bar 3 can be accommodated therein to ensure stable installation, so that the conductive bar 3 can be led out to the supporting surface 41 along a preset track, further improving the installation stability of the conductive bar 3.

[0062] Specifically, the conductive bar 3 is arranged inside the groove 42, and then the high-voltage output pole of the conductive bar 3 is led out from the middle of the end plate 1, which can greatly improve the installation adaptability of the battery module, save the length of the copper-aluminum bar connecting the battery modules after the battery module is arranged in the battery box, and thereby effectively save the cost of the corresponding copper-aluminum bar.

[0063] In one case of the present embodiment, referring to Figures 3-8The mounting hole 43 is internally embedded with a nut whose top surface exceeds the supporting surface 41, and the output pole of the conductive strip 3 is fixed by sequentially threading the fixing component through the conductive strip 3 and the nut.

[0064] It can be known that by embedding the nut in the mounting hole 43, the fixing component is used to effectively fix the output pole of the conductive strip 3, which is simple in structure and convenient for users to operate.

[0065] In another case of the embodiment, the end plate 1 is provided with an accommodating groove 11 at the top end for accommodating the conductive strip 3, and the supporting surface 41 is formed on the bottom surface of the accommodating groove 11.

[0066] It can be seen that the accommodating groove 11 is provided at the top end of the end plate 1, the supporting surface 41 is arranged in the space, the output pole of the conductive strip 3 is accommodated in the space, and the actual installation stability of the conductive strip 3 is improved.

[0067] In one example of the embodiment, referring to Figure 8 The accommodating groove 11 is internally provided with a shielding piece 12 for shielding the output pole of the conductive strip 3.

[0068] It can be known that the shielding piece 12 is installed in the accommodating groove 11 to shield the conductive strip 3, which can play a dustproof role and prevent the operator from accidentally touching the conductive strip 3, thereby reducing the risk of electric shock.

[0069] For example, the shielding piece 12 can be a block, and an opening is reserved for the conductive strip 3 to pass through, and the fixing component can be a threaded bolt to effectively connect the conductive strip 3 and the internal nut. Of course, the above fixing component and shielding piece 12 can also be other components, which are not limited in the embodiment.

[0070] In actual operation of the embodiment, referring to Figure 2 and Figure 6 Further comprising: a metal insert 13 internally hollow and fixedly threaded in the end plate 1, the metal insert 13 is configured to thread the bolt to fix the end plate 1 to the battery box.

[0071] It can be known that the metal insert 13 can effectively fix the end plate 1 to the battery box, further improve the strength of the end plate 1, reduce the deformation of the end plate 1 when subjected to external force, and further improve the structural strength of the end plate 1.

[0072] For example, the metal insert 13 is internally provided with a waist-shaped hole 131, and the center axis of the waist-shaped hole is closer to the side of the end plate 1 away from the battery cell than to the side close to the battery cell.

[0073] As can be seen, by opening a hole inside the metal insert 13, the bolt is installed inside, and the effective connection between the end plate 1 and the battery bottom plate is realized by using the pull bolt, thereby improving the structural strength. The opening position of the waist-shaped hole 131 can effectively ensure that it will not affect the internal battery cell and low-voltage installation unit 2.

[0074] For example, the metal insert 13 can be a metal steel pipe, which can increase the local strength, thereby avoiding local cracking of the plastic end plate 1 caused by bolt torque.

[0075] In another case of the embodiment, referring to Figure 1 , the side of the end plate 1 away from the battery cell is provided with a plurality of reinforcing ribs 14, and the plurality of reinforcing ribs are vertically staggered.

[0076] It can be known that the reinforcing rib 14 can significantly improve the structural strength of the end plate 1, further improve the stability of the end plate 1 when subjected to the battery expansion force, and effectively reduce the weight of the end plate 1.

[0077] In actual operation, referring to Figure 1 , the side of the end plate 1 away from the battery cell is provided with at least one tie strap groove 15 for accommodating the battery module fixing tie strap.

[0078] It can be known that the tie strap groove 15 can provide a structural basis for the connection between the end plate 1 and the tie strap, thereby providing the required pre-tightening force for the battery cell through the end plate 1 and the tie strap, which helps to improve the overall cycle life of the battery module.

[0079] For example, the tie strap can be tied in an up-down manner, and the lower tie strap can be used as a rubber blocking strip, thereby reducing system end components, saving costs, and improving the structural strength of the entire battery package.

[0080] The embodiment also provides a battery module, referring to Figure 1 and Figure 9 , comprising: a plurality of battery cells stacked in sequence, and two end plates 1 corresponding to the outer walls of the two battery cells on the outermost side in the stacking direction.

[0081] It can be seen that by setting a high-voltage mounting position 4 on the end plate 1 of the battery module, it is convenient to directly fix the conductive busbar 3 on the end plate 1. Since the end plate 1 is constructed to be electrically insulated, there is no need to install a high-voltage electrical connection support and insulating sheet separately, so that the conductive busbar 3 can be installed. In addition, by setting a low-voltage mounting unit 2 on the end plate 1, it is convenient to integrate the low-voltage connector 7 into the end plate 1, so that there is no need to set a low-voltage socket inside the battery box, thereby saving the number of parts in the battery module. The low-voltage mounting unit 2 is located on the side away from the battery cell, which also makes it convenient for workers to operate and install. The integrated design also effectively simplifies the installation process of the conductive busbar 3, the low-voltage connector 7 and the FPC6, thereby effectively reducing the production cost of the battery module.

[0082] This embodiment also provides a battery pack, including a housing and a battery module housed inside the housing as described above.

[0083] The above examples primarily illustrate the end plate 1, the battery module including the end plate 1, and the battery pack including the battery module of this application. Although only some embodiments of this application have been described, those skilled in the art should understand that this application can be implemented in many other forms without departing from its spirit and scope. Therefore, the examples and embodiments shown are considered illustrative rather than restrictive, and this application may cover various modifications and substitutions without departing from the spirit and scope of the technical solution of this application.

Claims

1. An end plate for fixing a battery cell assembly, characterized in that, The end plate is configured with a high-voltage mounting position for fixing the conductive busbar, and at least one low-voltage mounting unit for mounting low-voltage devices is provided on the side of the end plate away from the battery cell. The end plate is configured to be electrically insulated.

2. The end plate according to claim 1, characterized in that, The low-voltage mounting unit includes: a number of through-connection components disposed on the side of the end plate away from the battery cell and used for connecting the insulating plate, and a number of snap-fit ​​components disposed below the through-connection components and used for snap-fitting the bottom of the insulating plate. The FPC and the low-voltage connector are sequentially fixed and attached to the outer wall of the insulating plate.

3. The end plate according to claim 2, characterized in that, The through-connecting members are configured in four parts and are distributed at the four corners of the insulating plate, and the snap-fitting members are configured in two parts and are both abutting against the bottom outer wall of the insulating plate.

4. The end plate according to claim 2 or 3, characterized in that, The through-joint member is configured as a heat-fusion post, and / or the snap-fit ​​member is configured as a snap fastener.

5. The end plate according to claim 1, characterized in that, The low-voltage installation unit is provided in two sets, and the two sets of low-voltage installation units are symmetrically distributed with respect to the central axis of the end plate.

6. The end plate according to claim 1, characterized in that, The high-voltage mounting position includes: a support surface constructed on the top of the end plate and having at least one mounting hole, and a groove formed on the side of the end plate near the battery cell for accommodating the conductive busbar, wherein the output electrode of the conductive busbar is fixedly pressed against the support surface.

7. The end plate according to claim 6, characterized in that, A nut with its top surface extending beyond the support surface is embedded inside the mounting hole. The output electrode of the conductive busbar is fixed by a fixing component that is sequentially connected to the conductive busbar and the nut.

8. The end plate according to claim 6, characterized in that, The top of the end plate is provided with a receiving groove for accommodating the conductive busbar, and the supporting surface is formed on the bottom surface of the receiving groove.

9. The end plate according to claim 8, characterized in that, The receiving groove is equipped with a shielding component for blocking the output electrode of the conductive outlet.

10. The end plate according to claim 1, characterized in that, The end plate also includes a hollow metal insert that is fixedly inserted inside the end plate, the metal insert being configured for bolts to be inserted to fix the end plate to the battery housing.

11. The end plate according to claim 10, characterized in that, The metal insert has a through-hole in the center, and the distance from the center axis of the through-hole to the side of the end plate away from the battery cell is less than the distance to the side closer to the battery cell.

12. The end plate according to claim 1, characterized in that, The end plate has multiple reinforcing ribs on the side opposite to the battery cell, and the multiple reinforcing ribs are distributed vertically and alternately.

13. The end plate according to claim 1, characterized in that, The end plate has at least one cable tie slot on the side opposite to the battery cell for accommodating the battery module fixing cable tie.

14. A battery module, characterized in that, include: A plurality of battery cells stacked sequentially, and two end plates correspondingly attached to the outer walls of the two outermost battery cells along the stacking direction, as described in any one of claims 1-13.

15. A battery pack, characterized in that, Includes a housing, and a container housed inside the housing. The battery module as described in claim 14.

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