A battery module and a battery pack convenient to disassemble

Abstract

This utility model discloses a battery module and battery pack that are easy to assemble and disassemble, relating to the field of battery manufacturing. Specifically, the battery module includes multiple sub-modules, each sub-module comprising a base assembly, end plates, battery cells, harmonica tubes, and a top crossbeam. The end plates are disposed at both ends of the base assembly along a first direction. The battery cells and harmonica tubes are arranged alternately between the end plates. The top crossbeam is disposed on top of the battery cells and harmonica tubes, and its two ends along the first direction are connected to the end plates. The top crossbeam in one sub-module is detachably connected to the base assembly in an adjacent sub-module. The battery module provided by this utility model is easy to stack, simple to maintain, and exhibits small temperature differences and high consistency among the battery cells.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing, and in particular to a battery module and battery pack that are easy to assemble and disassemble. Background Technology

[0002] Currently, the market for sodium-ion battery blade batteries is vast. However, as capacity gradually increases, the number of cells in a battery pack also increases, and the weight of the battery module becomes increasingly larger. In existing solutions, modules are stacked by hoisting and then manually adjusted for positioning. If the module deviation is too large, positioning becomes difficult. Furthermore, after being installed in a cabinet / container, if a module on a particular layer needs to be disassembled, the entire stacked battery cluster must be pulled out and then lifted by hoisting equipment for disassembly. This results in slow maintenance efficiency and difficulty in maintenance. In addition, the mainstream thermal management in the blade battery market is still liquid cooling, but when liquid cooling is used for heat exchange in the blade, the heat exchange is limited, and the temperature rise is relatively high. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a battery module and battery pack that are easy to disassemble and assemble, so as to solve one of the above-mentioned technical problems. The battery module is easy to stack, simple to maintain, and has a small temperature difference between cells and high consistency.

[0004] This utility model provides a battery module that is easy to assemble and disassemble, comprising multiple sub-modules. Each sub-module includes a base assembly, end plates, battery cells, harmonica tubes, and a top crossbeam. The end plates are disposed at both ends of the base assembly along a first direction. The battery cells and harmonica tubes are arranged alternately between the end plates. The top crossbeam is disposed at the top of the battery cells and harmonica tubes, and the two ends of the top crossbeam along the first direction are connected to the end plates. The top crossbeam in one sub-module and the base assembly in the adjacent sub-module are detachably connected.

[0005] Furthermore, it also includes a side beam, which is disposed on both sides of the battery cell and the harmonica tube along the second direction, and the two ends of the side beam along the first direction are connected to the end plate. One end of the harmonica tube along the second direction is provided with an air inlet, and the other end is provided with an air outlet, and the air inlet and the air outlet are connected.

[0006] Furthermore, the base assembly includes a first transverse beam, a second transverse beam, a first longitudinal beam, and a second longitudinal beam. The first transverse beam and the second transverse beam are respectively arranged at both ends of the first direction, and the first longitudinal beam and the second longitudinal beam are respectively arranged at both ends of the first transverse beam and the second transverse beam along the second direction.

[0007] Furthermore, the interiors of the first longitudinal beam and the second longitudinal beam are hollow, and both ends of the first longitudinal beam and the second longitudinal beam along the first direction are open.

[0008] Furthermore, the bottom of the first transverse beam and the second transverse beam are provided with grooves, the openings of the grooves facing the top transverse beams in the adjacent sub-modules, and the top transverse beams in the adjacent sub-modules can be placed in the grooves.

[0009] Furthermore, the groove on the first transverse beam is open at both ends along the first direction, the groove on the second transverse beam is closed at the end along the first direction and away from the first transverse beam, and the groove on the second transverse beam is open at the end along the first direction and close to the first transverse beam.

[0010] Furthermore, the top crossbeam is provided with a semi-waist-shaped hole at both ends along the first direction, and a first mounting hole corresponding to the first mounting member. The first mounting hole is located inside the semi-waist-shaped hole. The end plate is provided with a second mounting hole corresponding to the first mounting hole. The top crossbeam is connected to the end plate through the cooperation of the first mounting hole, the second mounting hole, and the first mounting member.

[0011] Furthermore, the top crossbeam is open at both ends along the first direction, and the top crossbeam is provided with third mounting holes corresponding to the second mounting member at both ends along the first direction. The third mounting holes are located outside the semi-waist-shaped hole. The first transverse beam and the second transverse beam are provided with fourth mounting holes corresponding to the third mounting holes, and the fourth mounting holes are located at the top of the groove. The top crossbeam is detachably connected to the first transverse beam and the second transverse beam through the cooperation of the third mounting holes, the fourth mounting holes, and the second mounting member.

[0012] Furthermore, the bottom of the end plate is provided with a connector, one side of which is connected to the end plate, and the other side of which is provided with a fifth mounting hole corresponding to the third mounting member. The top of the first transverse beam and the second transverse beam are provided with a sixth mounting hole corresponding to the fifth mounting hole. The end plate is connected to the first transverse beam and the second transverse beam through the cooperation of the fifth mounting hole, the sixth mounting hole, and the third mounting member.

[0013] This utility model also provides a battery pack, including the battery module described above that is easy to install and remove.

[0014] Compared with existing technologies, this utility model has the following beneficial technical effects:

[0015] This utility model provides a battery module and battery pack that are easy to assemble and disassemble. When stacked, the base assembly of the previous sub-module matches the top crossbeam of the next sub-module, which can provide lateral positioning and limiting when two adjacent sub-modules are pushed into the stack, thus improving stacking efficiency. The longitudinal beam opening in the base assembly of each sub-module can be inserted into the forklift arm. The structural strength can meet the load-bearing and transportation conditions of the stacked battery module. During maintenance, it is not necessary to forklift the entire stacked battery module and use lifting tools to lift and disassemble the sub-modules one by one. Only a forklift is needed to quickly complete maintenance and replacement of sub-modules, improving maintenance efficiency and reducing maintenance costs. The first direction X is limited by the closed end of the second transverse beam to prevent the sub-module from being pushed too deep, thus improving stacking efficiency. A harmonica tube is set between the cells, and the large surface of the middle of the cell contacts the large surface of the harmonica tube, which increases the cooling area of ​​the cell and increases the heat dissipation efficiency of the cell, resulting in small temperature difference and high consistency of the cell. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of a battery module that is easy to assemble and disassemble, as provided by this utility model.

[0017] Figure 2 This is a rear view diagram of a battery module that is easy to assemble and disassemble, as provided by this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the split module in this utility model.

[0019] Figure 4 This is an exploded view of the module in this utility model.

[0020] Figure 5 This is a schematic diagram of the base assembly in this utility model.

[0021] Figure 6 This is a bottom view of the first transverse beam in this utility model.

[0022] Figure 7 This is a bottom view of the second transverse beam in this utility model.

[0023] Figure 8 This is a schematic diagram of the top crossbeam in this utility model.

[0024] Among them: 100 - battery module;

[0025] 10-Sub-module; 11-Base assembly; 111-First transverse beam; 112-Second transverse beam; 113-First longitudinal beam; 114-Second longitudinal beam; 115-Groove; 116-Fourth mounting hole; 117-Sixth mounting hole; 12-End plate; 121-Second mounting hole; 13-Battery cell; 14-Harmonica tube; 15-Top crossbeam; 151-Semi-waisted hole; 152-First mounting hole; 153-Third mounting hole; 16-Side crossbeam; 17-Connector; 171-Fifth mounting hole; X-First direction; Y-Second direction. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] In the description of this utility model, it should be noted that the orientation or positional relationship indicated in this description is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the parts or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Please see Figure 1-4 This utility model provides a battery module 100 that is easy to assemble and disassemble, including multiple sub-modules 10. Each sub-module 10 includes a base assembly 11, an end plate 12, a battery cell 13, a harmonica tube 14, and a top crossbeam 15. The end plate 12 is disposed at both ends of the base assembly 11 along the first direction X. The battery cell 13 and the harmonica tube 14 are arranged alternately between the end plates 12. The top crossbeam 15 is disposed on top of the battery cell 13 and the harmonica tube 14, and the two ends of the top crossbeam 15 along the first direction X are connected to the end plate 12. The top crossbeam 15 in one sub-module 10 and the base assembly 11 in the adjacent sub-module 10 are detachably connected. The battery module 100 provided by this utility model allows multiple sub-modules 10 to be installed, connected, and disassembled via a base assembly 11 and a top crossbeam 15. The sub-modules 10 are easy to stack and maintain. Furthermore, the harmonica tube 14 and the battery cell 13 are arranged alternately, with the large surface of the harmonica tube 14 in contact with the large surface of the battery cell 13. This allows the heat to be carried away from the inside of the battery cell 13, increasing the heat dissipation efficiency of the battery cell 13. This results in a smaller temperature difference between multiple battery cells 13 and a higher temperature uniformity among the battery cells 13.

[0029] In one embodiment of this utility model, the sub-module 10 further includes a side beam 16. The side beam 16 is disposed on both sides of the battery cell 13 and the harmonica tube 14 along the second direction Y. The side beam 16 is formed by bending sheet metal and has an overall Z-shaped structure with the opening facing the battery cell 13. The two ends of the side beam 16 along the first direction X are connected to the end plate 12 to restrict the movement of the battery cell 13 in the second direction Y after the battery cells 13 are stacked.

[0030] Please refer to it again. Figure 1-2 The harmonica tube 14 has an air inlet at one end along the second direction Y and an air outlet at the other end, which are connected. Specifically, there are multiple air inlets and outlets, which can be of an oblong shape. The harmonica tube 14 is made of extruded aluminum and uses a high thermal conductivity aluminum alloy material. Air is blown into the air inlet by an air conditioner. The large surface of the harmonica tube 14 is in contact with the large surface of the battery cell 13. When the battery cell 13 is working, it generates a lot of heat, which is transferred to the harmonica tube 14. Then, the air blown in by the air conditioner cools the harmonica tube 14, and finally, the heat is carried away through the air outlet, improving the heat dissipation efficiency of the battery cell 13.

[0031] Please refer to the following: Figure 5 The base assembly 11 includes a first transverse beam 111, a second transverse beam 112, a first longitudinal beam 113, and a second longitudinal beam 114. The first transverse beam 111 and the second transverse beam 112 are respectively arranged at both ends in the first direction X, and the first longitudinal beam 113 and the second longitudinal beam 114 are respectively arranged at both ends in the second direction Y of the first transverse beam 111 and the second transverse beam 112. The first transverse beam 111, the second transverse beam 112, the first longitudinal beam 113, and the second longitudinal beam 114 are welded together to form a single unit. The overall structural strength of the base assembly 11 can meet the static load and transportation requirements after multiple sub-modules 10 are stacked vertically. The material of the base assembly 11 can be optimized and strengthened according to the number of stacked sub-modules 10. It should be noted that the number of first transverse beams 111 can be set according to the support strength of the base assembly 11, and multiple first transverse beams 111 can be spaced apart along the first direction X on the inner side of the second transverse beam 112. In this embodiment, two first transverse beams 111 are provided.

[0032] Furthermore, the first longitudinal beam 113 and the second longitudinal beam 114 are formed by bending sheet metal or rectangular tubes. The interiors of the first longitudinal beam 113 and the second longitudinal beam 114 are hollow, and both ends of the first longitudinal beam 113 and the second longitudinal beam 114 along the first direction X are open, that is, both ends have openings, and the openings meet the width and thickness of the forklift fork arm, allowing the forklift fork arm to extend into them. In this way, when repairing the battery module 100, it is not necessary to fork out the entire stack of battery modules 100 and then use lifting tools to lift and disassemble the sub-modules 10 one by one. It is only necessary to use the forklift to hold the first longitudinal beam 113 and the second longitudinal beam 114 in the sub-module 10 that needs to be repaired, and then disassemble the sub-module 10 that needs to be repaired. The other sub-modules 10 that do not need to be repaired can be forked back in the same way. Maintenance and replacement of sub-modules 10 can be completed quickly, improving maintenance efficiency and reducing maintenance costs.

[0033] Please refer to 6-7. The first transverse beam 111 and the second transverse beam 112 are formed by bending sheet metal or rectangular tubes. The bottom of the first transverse beam 111 and the second transverse beam 112 are provided with grooves 115. The opening of the grooves 115 faces the top transverse beam 15 in the adjacent sub-module 10, and the height of the grooves 115 matches the height of the top transverse beam 15. The width of the grooves 115 matches the width of the top transverse beam 15. Therefore, the top transverse beam 15 in the adjacent sub-module 10 can be placed in the groove 115 of the previous sub-module 10.

[0034] Specifically, the groove 115 on the first transverse beam 111 is open at both ends along the first direction X. In this way, when one sub-module 10 is pushed into another sub-module 10, the groove 115 on the first transverse beam 111 can facilitate the push-in of the top transverse beam 15 and can restrict the movement of the top transverse beam 15 in the second direction Y. The groove 115 on the second transverse beam 112 is open at one end along the first direction X and close to the first transverse beam 111, and the groove 115 on the second transverse beam 112 is closed at one end along the first direction X and away from the first transverse beam 111. The open end facilitates the push-in of the top transverse beam 15, and the closed end is used to limit the top transverse beam 15 in the first direction X to prevent the top transverse beam 15 from being pushed in too deeply.

[0035] Please see Figure 4 and 8The top crossbeam 15 has semi-circular holes 151 and first mounting holes 152 corresponding to the first mounting component at both ends along the first direction X. The first mounting holes 152 are located inside the semi-circular holes 151. The diameter of the semi-circular holes 151 is sufficient to allow the first mounting component to fully enter, and the center of the semi-circular holes 151 is concentric with the center of the first mounting holes 152. This prevents the first mounting component from protruding from the top crossbeam 15, causing unevenness between adjacent sub-modules 10 and resulting in unstable installation. The end plate 12 has a second mounting hole 121 corresponding to the first mounting hole 152. The top crossbeam 15 is connected to the end plate 12 through the first mounting hole 152, the second mounting hole 121, and the engagement of the first mounting component. The first mounting component can be a screw or nut, and the first mounting hole 152 and the second mounting hole 121 can be screw holes.

[0036] Please see Figure 6-8 The top crossbeam 15 is open at both ends along the first direction X, and the top crossbeam 15 is also provided with third mounting holes 153 corresponding to the second mounting component at both ends along the first direction X. The third mounting holes 153 are located outside the semi-waist-shaped hole 151. The first transverse beam 111 and the second transverse beam 112 are provided with fourth mounting holes 116 corresponding to the third mounting holes 153, and the fourth mounting holes 116 are located at the top of the groove 115. The top crossbeam 15 is detachably connected to the first transverse beam 111 and the second transverse beam 112 through the cooperation of the third mounting holes 153, the fourth mounting holes 116, and the second mounting component. The third mounting hole 153 is located outside the semi-waist-shaped hole 151, and the two ends of the top crossbeam 15 along the first direction X are set to be open, which facilitates the disassembly and installation of the first transverse beam 111, the second transverse beam 112 and the top crossbeam 15 on the adjacent sub-module 10 from the outside. The second mounting component can be a screw and a nut, and the third mounting hole 153 and the fourth mounting hole 116 can be screw holes.

[0037] Please see Figure 4-7 The end plate 12 is made of sheet metal by bending and welding, and is used to support and limit the battery cell 13. A connector 17 is provided at the bottom of the end plate 12. One side of the connector 17 is connected to the end plate 12, and the other side of the connector 17 is provided with a fifth mounting hole 171 corresponding to the third mounting component. The tops of the first transverse beam 111 and the second transverse beam 112 are provided with a sixth mounting hole 117 corresponding to the fifth mounting hole 171. The end plate 12 is connected to the first transverse beam 111 and the second transverse beam 112 through the cooperation of the fifth mounting hole 171, the sixth mounting hole 117, and the third mounting component. The third mounting component can be a screw and a nut, and the fifth mounting hole 171 and the sixth mounting hole 117 can be screw holes.

[0038] The process of installing and disassembling multiple sub-modules 10 in a battery module 100 that is easy to install and disassemble provided by this utility model is as follows:

[0039] First, the base assembly 11, which is welded into one piece, is placed on the production line transfer tray. The end plate 12 at the first X-direction end of the base assembly 11 is connected and fixed to the base assembly 11 through the connector 17.

[0040] Then, the battery cell 13 and harmonica tube 14 are stacked alternately on the base assembly 11. After the battery cell 13 and harmonica tube 14 are placed, the end plate 12 at the other end of the base assembly 11 in the first direction X is pressed into the corresponding installation position on the base assembly 11 by the pressing device and fixed by the third mounting component. At the same time, the top crossbeam 15 and the end plates 12 on both sides are locked by the first mounting component. After locking, the pressing device is removed.

[0041] Then the side connecting beam 16 is connected to the two side end plates 12 to prevent the battery cell 13 from moving left and right;

[0042] Then, by inserting the forklift fork arm into the first longitudinal beam 113 and the second longitudinal beam 114 of the base assembly 11 in the sub-module 10, other sub-modules 10 are stacked upwards in sequence. During stacking, the groove 115 in the first transverse beam 111 on the base assembly 11 of the upper sub-module 10 is aligned with the top transverse beam 15 in the lower sub-module 10, and the upper sub-module 10 is pushed in from back to front along the first direction. When it is pushed into the corresponding position, the top transverse beam 15 of the lower sub-module 10 is in contact with the closed end of the groove 115 on the second transverse beam 112 in the upper sub-module 10, which means that the upper sub-module 10 and the lower sub-module 10 are in place. After slight adjustment, the holes of the first transverse beam 111 and the second transverse beam 112 of the upper sub-module 10 are aligned with the holes of the top transverse beam 15 of the lower sub-module 10. The two sub-modules 10 are then locked by the second mounting piece and stacked upwards in sequence.

[0043] When a faulty sub-module 10 in a stacked assembly needs to be removed, a forklift can be used to remove the faulty sub-module 10 and the sub-modules 10 stacked above it together. Specifically, the forks are inserted into the openings at the ends of the first longitudinal beam 113 and the second longitudinal beam 114 in the faulty sub-module 10. After removing the faulty sub-module 10 from its non-faulty counterpart above it, the non-faulty sub-module 10 above it is then forked back into its original position using the same method. This solution eliminates the need to remove the entire stacked battery module 100 and use lifting tools to lift and disassemble the sub-modules 10 one by one. A forklift can quickly complete the maintenance and replacement of the sub-modules 10, improving maintenance efficiency and reducing maintenance costs.

[0044] As described above, the battery module provided by this utility model is easy to assemble and disassemble. When stacked, the base assembly 11 of the previous sub-module 10 matches the top crossbeam 15 of the next sub-module 10, which can provide lateral positioning and limiting when two adjacent sub-modules 10 are pushed into the stack, thus improving stacking efficiency. The longitudinal beam opening in the base assembly 11 of each sub-module 10 can be inserted into a forklift fork arm. The structural strength can meet the load-bearing, transportation, and other working conditions of the overall stacked battery module 100. During maintenance, it is not necessary to disassemble the entire stacked battery module. After the 100 forklift is extended, the sub-modules 10 are lifted and disassembled one by one using lifting tools. Maintenance and replacement of sub-modules 10 can be completed quickly with just a forklift, improving maintenance efficiency and reducing maintenance costs. The first direction X is limited by the closed end of the second transverse beam 112 to prevent the sub-modules 10 from being pushed too deep, thus improving stacking efficiency. Harmonica tubes 14 are set between the battery cells 13, and the large surface of the middle of the battery cell 13 contacts the large surface of the harmonica tube 14, increasing the cooling area of ​​the battery cell 13, increasing the heat dissipation efficiency of the battery cell 13, and resulting in small temperature difference and high consistency of the battery cell 13.

[0045] This utility model also provides a battery pack, including the battery module that is easy to install and remove as described above. For other structures of the vehicle, please refer to the prior art, which will not be repeated here.

[0046] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A battery module (100) that is easy to install and disassemble, characterized in that: The system includes multiple sub-modules (10), each sub-module (10) including a base assembly (11), an end plate (12), a battery cell (13), a harmonica tube (14), and a top beam (15). The end plate (12) is disposed at both ends of the base assembly (11) along a first direction (X). The battery cell (13) and the harmonica tube (14) are arranged alternately between the end plates (12). The top beam (15) is disposed at the top of the battery cell (13) and the harmonica tube (14), and the top beam (15) is connected to the end plate (12) at both ends along the first direction. The top beam (15) in one sub-module (10) and the base assembly (11) in the adjacent sub-module (10) are detachably connected.

2. The battery module that is easy to install and disassemble according to claim 1, characterized in that: It also includes a side beam (16), which is disposed on both sides of the battery cell (13) and the harmonica tube (14) along the second direction (Y), and the two ends of the side beam (16) along the first direction (X) are connected to the end plate (12). One end of the harmonica tube (14) along the second direction (Y) is provided with an air inlet and the other end is provided with an air outlet, and the air inlet and the air outlet are connected.

3. The battery module that is easy to install and disassemble according to claim 1, characterized in that: The base assembly (11) includes a first transverse beam (111), a second transverse beam (112), a first longitudinal beam (113), and a second longitudinal beam (114). The first transverse beam (111) and the second transverse beam (112) are respectively arranged at both ends of the first direction (X), and the first longitudinal beam (113) and the second longitudinal beam (114) are respectively arranged at both ends of the first transverse beam (111) and the second transverse beam (112) along the second direction (Y).

4. The battery module that is easy to install and disassemble according to claim 3, characterized in that: The interiors of the first longitudinal beam (113) and the second longitudinal beam (114) are hollow, and both ends of the first longitudinal beam (113) and the second longitudinal beam (114) along the first direction (X) are open.

5. The battery module that is easy to install and disassemble according to claim 3, characterized in that: The bottom of the first transverse beam (111) and the second transverse beam (112) are provided with grooves (115), the opening of the grooves (115) faces the top transverse beam (15) in the adjacent sub-module (10), and the top transverse beam (15) in the adjacent sub-module (10) can be placed in the grooves (115).

6. The battery module that is easy to install and disassemble according to claim 5, characterized in that: The groove (115) on the first transverse beam (111) is open at both ends along the first direction (X), the groove (115) on the second transverse beam (112) is closed at one end along the first direction (X) away from the first transverse beam (111), and the groove (115) on the second transverse beam (112) is open at one end along the first direction (X) near the first transverse beam (111).

7. The battery module that is easy to install and disassemble according to claim 5, characterized in that: The top crossbeam (15) is provided with a semi-waist-shaped hole (151) and a first mounting hole (152) corresponding to the first mounting member at both ends along the first direction (X). The first mounting hole (152) is located in the semi-waist-shaped hole (151). The end plate (12) is provided with a second mounting hole (121) corresponding to the first mounting hole (152). The top crossbeam (15) is connected to the end plate (12) through the cooperation of the first mounting hole (152), the second mounting hole (121) and the first mounting member.

8. The battery module that is easy to install and disassemble according to claim 7, characterized in that: The top crossbeam (15) is open at both ends along the first direction (X). The top crossbeam (15) is provided with third mounting holes (153) corresponding to the second mounting member at both ends along the first direction (X). The third mounting holes (153) are located outside the semi-waist-shaped hole (151). The first transverse beam (111) and the second transverse beam (112) are provided with fourth mounting holes (116) corresponding to the third mounting holes (153). The fourth mounting holes (116) are located at the top of the groove (115). The top crossbeam (15) is detachably connected to the first transverse beam (111) and the second transverse beam (112) through the cooperation of the third mounting holes (153), the fourth mounting holes (116), and the second mounting member.

9. The battery module that is easy to install and disassemble according to claim 3, characterized in that: The end plate (12) has a connector (17) at its bottom. One side of the connector (17) is connected to the end plate (12), and the other side of the connector (17) is provided with a fifth mounting hole (171) corresponding to the third mounting component. The top of the first transverse beam (111) and the second transverse beam (112) are provided with a sixth mounting hole (117) corresponding to the fifth mounting hole (171). The end plate (12) is connected to the first transverse beam (111) and the second transverse beam (112) through the cooperation of the fifth mounting hole (171), the sixth mounting hole (117), and the third mounting component.

10. A battery pack, characterized in that: Includes the battery module that is easy to install and remove as described in any one of claims 1-9.

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