End plate, battery module and battery pack

Abstract

Provided are an end plate, a battery module and a battery pack. The battery module comprises an end plate and a busbar fixing base; the top portion of the end plate is provided with a guide slot for accommodating the busbar fixing base; the bottom portion of the busbar fixing base is provided with a snap fastener, and the bottom wall of the guide slot is provided with a snap-fit portion; the snap fastener is fixed in the snap-fit portion along a first direction, and the busbar fixing base abuts, along a second direction, against at least two side walls of the guide slot.

Description

End plate, battery module and battery pack

[0001] This application claims priority to Chinese Patent Application No. 202422138276.8, filed with the Chinese Patent Office on August 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery technology, specifically to an end plate, a battery module, and a battery pack. Background Technology

[0003] The battery module includes an end plate, which is used to fix the battery and the busbar in the battery module. When the end plate is made of metal, the busbar is fixed to the end plate by a busbar fixing seat. The busbar fixing seat is usually fixed to the end plate by a single fixing method. Invention Overview

[0004] When the battery module is subjected to severe vibration, the busbar mounting base and the end plate are prone to loosening, which affects the overall structural stability of the battery module's busbar.

[0005] In a first aspect, embodiments of this application provide a battery module, the battery module comprising:

[0006] A battery pack, comprising multiple batteries arranged side by side;

[0007] End plate, the end plate is set at the end of the battery pack;

[0008] Busbar, located at the top of the battery pack, is electrically connected to multiple batteries;

[0009] Busbar mounting bracket, which is fixedly connected to one end of the busbar;

[0010] The end plate has a guide groove at the top to accommodate the busbar fixing seat, a buckle at the bottom of the busbar fixing seat, a snap-fit ​​part at the bottom wall of the guide groove, the buckle being fixed in the snap-fit ​​part along the first direction, and the busbar fixing seat abutting against at least two side walls of the guide groove along the second direction, with the first direction and the second direction forming an angle.

[0011] Secondly, embodiments of this application provide an end plate, which includes the end plate of the aforementioned battery module.

[0012] Thirdly, embodiments of this application provide a battery pack, which includes a housing and a plurality of battery modules disposed inside the housing, the battery modules including the aforementioned battery modules. Beneficial effects

[0013] The battery module provided in this application has a guide groove on the end plate, and the busbar fixing seat abuts against the two side walls where the wire groove is located along the second direction. At the same time, a snap-fit ​​structure is formed between the end plate and the busbar fixing seat. The snap-fit ​​structure provides a snap-fit ​​force along the first direction, so that the end plate and the busbar fixing seat have forces in at least two different directions. Therefore, it can effectively improve the problem of easy loosening between the end plate and the busbar fixing seat caused by severe vibration of the battery module.

[0014] The end plate provided in this application includes the end plate of the aforementioned battery module. Its beneficial effects are the same as those of the end plate of the aforementioned battery module, and will not be repeated here.

[0015] The battery pack provided in this application includes the aforementioned battery module, and its beneficial effects are the same as those of the aforementioned battery module, which will not be repeated here. Attached Figure Description

[0016] Figure 1 is a perspective structural diagram of the battery module provided in an embodiment of this application;

[0017] Figure 2 is a magnified view of a portion of Figure 1;

[0018] Figure 3 is a perspective view of the end plate provided in an embodiment of this application from one angle;

[0019] Figure 4 is a perspective view of the end plate provided in an embodiment of this application from another angle;

[0020] Figure 5 is a perspective view of the busbar mounting base provided in an embodiment of this application;

[0021] Figure 6 is a structural diagram of the automatic line hoisting tool for hoisting battery modules provided in an embodiment of this application;

[0022] Figure 7 is a structural diagram of a manual line hoisting tool for hoisting a battery module provided in an embodiment of this application;

[0023] Icon labels:

[0024] 100. Battery module;

[0025] 1. Battery pack; 10. Battery; 121. First side; 122. Second side;

[0026] 2. Busbar; 21. Positive busbar; 211. First positive electrode connector; 22. Negative busbar; 221. First negative electrode connector;

[0027] 3. Busbar mounting bracket; 31. Positive busbar mounting bracket; 32. Negative busbar mounting bracket; 33. Clip; 34. Elastic part;

[0028] 4. End plate; 411. First end plate; 412. Second end plate; 42. Module fixing hole; 43. Guide groove; 4311. First side wall; 4312. Second side wall; 4313. Third side wall; 432. Bottom wall; 433. Snap-fit ​​part; 44. Glue overflow groove; 45. Manual lifting groove; 46. Automatic line lifting hole; 47. Fixing belt limiting groove; 471. Guide angle; 472. Clearance part; 48. Wire harness fixing part; 481. Wire harness fixing hole; 49. Reinforcing structure;

[0029] 5. Wire harness; 51. Positive wire harness; 52. Negative wire harness; 53. Wire harness cable tie; 6. Fixing strap; 61. Insulating sleeve; 7. Insulating sheet; 8. Automatic wire hoisting tool; 81. Column; 9. Manual hoisting tool; 91. Hook. Embodiments of the present invention

[0030] An embodiment of this application provides a battery module, as shown in Figures 1 to 3. The battery module 100 includes a battery pack 1, a busbar 2, at least two busbar mounting bases 3, at least two end plates 4, a wiring harness 5, and at least one fixing strap 6.

[0031] The battery pack 1 includes multiple batteries 10 arranged side by side. Each battery 10 can be a prismatic battery or a cylindrical battery. Each battery 10 has a terminal at its top. In one specific embodiment, each battery 10 has a positive terminal and a negative terminal at its top, symmetrically arranged about the central axis of the battery 10. The battery pack 1 includes multiple positive terminals and multiple negative terminals arranged in a row. In other alternative examples, each battery 10 has only one positive terminal or one negative terminal at its top, and the battery pack 1 includes multiple positive terminals or multiple negative terminals arranged in a row. The battery pack 1 also includes a first end 121 and a second end 122 opposite to each other, arranged along the thickness direction of the battery pack 1.

[0032] Busbar 2 includes a positive busbar 21 and a negative busbar 22. The positive busbar 21 includes multiple positive electrode connectors arranged side-by-side, each connector connecting the positive terminals of two adjacent batteries. The negative busbar 22 includes multiple negative electrode connectors arranged side-by-side, each connector connecting the negative terminals of two adjacent batteries. The positive or negative electrode connectors can be copper, aluminum, or a copper-aluminum composite busbar.

[0033] The wiring harness 5 includes a positive wiring harness 51 and a negative wiring harness 52. Each positive terminal connector in the positive bus 21 is electrically connected to the positive wiring harness 51, and each negative terminal connector in the negative bus 22 is connected to the negative wiring harness 52.

[0034] The busbar mounting base 3 includes a positive busbar mounting base 31 and a negative busbar mounting base 32. The positive busbar 21 includes a first positive terminal connector 211 near the first end 121 of the battery pack 1. The first positive terminal connector 211 serves as the positive output of the battery pack 1. One end of the first positive terminal connector 211 is fixed to the positive terminal post of the battery 10 located at the first end 121, and the other end of the first positive terminal connector 211 is fixed to the positive busbar mounting base 31 by bolts. The negative busbar 22 includes a first negative terminal connector 221 near the second end 122 of the battery pack 1. The first negative terminal connector 221 serves as the negative output of the battery pack 1. One end of the first negative terminal connector 221 is fixed to the negative terminal post of the battery 10 located at the second end 122, and the other end of the first negative terminal connector 221 is fixed to the negative busbar mounting base 32 by bolts.

[0035] At least the two end plates 4 include a first end plate 411 and a second end plate 412, wherein the first end plate 411 is disposed at the first end 121 of the battery pack 1, and the second end plate 412 is disposed at the second end 122 of the battery pack 1. The two end plates 4 are die-cast from a high-strength metal material.

[0036] At least one fixing strap 6 is combined with at least two end plates 4 to fix multiple batteries 10 side by side to form the battery pack 1. In one specific embodiment, the fixing strap 6 is configured as a circumferentially closed rectangular steel strap, including an upper fixing strap and a lower fixing strap. A first end plate 411 is placed at the first end 121 of the battery pack 1, and a second end plate 412 is placed at the second end 122 of the battery pack 1. Both the upper and lower fixing straps are sleeved on the outside of the first end plate 411 and the second end plate 412 and are used to fix the first end plate 411 and the second end plate 412. The upper fixing strap is located near the top end of the battery pack 1, and the lower fixing strap is located near the bottom end of the battery pack 1. Both the upper and lower fixing straps are configured to circumferentially surround the battery pack 1, thereby providing circumferential fixation for the multiple batteries 10 in the battery pack 1.

[0037] To prevent the upper and lower fixing straps from sliding relative to the end plate 4 after being fitted onto the outside of the end plate 4, thus affecting the fixing effect of the fixing straps on the battery pack 1, in some embodiments provided in this application, as shown in Figures 1 and 3, a fixing strap limiting groove 47 is also provided on the end plate 4. The fixing strap 6 is arranged to be received in the fixing strap limiting groove 47 to remain fixed relative to the end plate 4. Specifically, two fixing strap limiting grooves 47 are provided on the two side walls of each end plate 4. The depth of the fixing strap limiting groove 47 is approximately equal to the thickness of the fixing strap 6. The width of the fixing strap limiting groove 47 is adaptively designed according to the width of the fixing strap 6. In some embodiments, the width of the fixing strap limiting groove 47 is set to 31mm, so that the width of the fixing strap 6 that can be accommodated in the fixing strap limiting groove 47 can be any width between 15mm and 30mm, for example, the width of the fixing strap 6 that can be accommodated is 19mm, 23mm, and 30mm.

[0038] As shown in Figures 1 and 3, guide angles 471 are provided on the top and bottom walls of the end plate 4. These guide angles 471 facilitate the quick fitting of the fixing strap 6 onto the outside of the first end plate 411, the battery pack 1, and the second end plate 412 and positioning it in the fixing strap limiting groove 47.

[0039] When the fixing strap 6 is made of steel, an insulating sleeve 61 is provided on the outer surface of the fixing strap 6 that contacts the multiple batteries 10. The insulating sleeve 61 is made of plastic material to insulate the fixing strap 6 and the battery pack 1. In order to prevent interference between the fixing strap limiting groove 47 and the insulating sleeve 61, a clearance part 472 is also provided in the part of the fixing strap limiting groove 47 near the battery 10. The clearance part 472 is located in the fixing strap limiting groove 47 and the depth of the clearance part 472 is greater than the depth of the rest of the fixing strap limiting groove 47.

[0040] As shown in Figures 1, 2, and 4, the battery module 100 also includes multiple insulating sheets 7. The insulating sheets 7 are made of plastic material, such as PC. The insulating sheets 7 can be disposed between adjacent batteries to provide insulation between them. The insulating sheets 7 can also be disposed between the first end plate 411 and the battery 10 located at the first end 121 of the battery pack 1 to provide insulation between the first end plate 411 and the battery 10. The insulating sheets 7 can also be disposed between the second end plate 412 and the battery 10 located at the second end 122 of the battery pack 1 to provide insulation between the second end plate 412 and the battery 10. The insulating sheets 7 are bonded to the first end plate 411 using adhesive. Since the amount of adhesive used is difficult to control, to prevent excessive adhesive from overflowing onto the surface of the end plate 4, an overflow groove 44 is provided on the inner surface of the end plate 4. The overflow groove 44 has a circumferentially closed rectangular cross-section and can absorb excess adhesive. The depth of the glue overflow groove 44 is 0.1mm to 2mm, and the width of the glue overflow groove 44 is 1mm to 5mm. In a specific embodiment, the depth of the glue overflow groove 44 is 1mm, and the width of the glue overflow groove 44 is 3mm.

[0041] In related technologies, the output busbar in the positive busbar 21 is fixed to the positive busbar mounting base 31, and the output busbar in the negative busbar 22 is fixed to the negative busbar mounting base 32. The positive busbar mounting base 31 or the negative busbar mounting base 32 is fixed to the end plate 4 by a single fixing method. When the battery module is subjected to severe vibration, the busbar mounting base 3 and the end plate 4 are prone to loosening, which in turn affects the overall structural stability of the busbar of the battery module.

[0042] In the embodiments of this application, as shown in Figures 1 to 3, a guide groove 43 is provided on the end plate 4. The guide groove 43 is used to fix the busbar fixing seat 3. One of the end plate 4 and the busbar fixing seat 3 is provided with a buckle 33, and the other of the end plate 4 and the busbar fixing seat 3 is provided with a snap-fit ​​part 433. The snap-fit ​​part 433 can be a snap-fit ​​hole or a snap-fit ​​groove. The buckle 33 snaps into the snap-fit ​​part 433. The buckle 33 or the snap-fit ​​part 433 is located in the guide groove 43, and the buckle 33 and the snap-fit ​​part 433 snap into each other along a first direction. The busbar fixing seat 3 abuts against at least one side wall where the guide groove 43 is located along a second direction.

[0043] Specifically, the first direction is set as the height direction of the busbar fixing seat 3, and the second direction is set as the width direction or the length direction of the busbar fixing seat 3. The buckle 33 engages with the engaging part 433, thereby restricting the movement of the busbar fixing seat 3 along its height direction. The busbar fixing seat 3 is inserted into the guide groove 43, and the busbar fixing seat 3 abuts against at least one side wall of the guide groove 43, thereby restricting the movement of the busbar fixing seat 3 along its width direction or length direction. The height direction of the busbar fixing seat 3 is set as the z-direction shown in Figure 4, and the width direction of the busbar fixing seat 3 is set as the x-direction shown in Figure 4. Since there are forces acting in at least two directions between the busbar fixing seat 3 and the end plate 4, the battery module 100 is subjected to severe vibration, and it is difficult for the busbar fixing seat 3 and the end plate 4 to loosen, thereby improving the stability of the overall structure of the busbar.

[0044] Referring again to Figures 1 and 3, at least one sidewall of the guide groove 43 includes a first sidewall 4311 and a second sidewall 4312 facing each other. The guide groove 43 also includes a bottom wall 432 connecting the first sidewall 4311 and the second sidewall 4312. Two engaging portions 433 are provided on the bottom wall 432, and the engaging portions 433 are configured as engaging holes. Two buckles 33 are provided on the bottom end face of the busbar fixing seat 3. The busbar fixing seat 3 is engaged with the bottom wall 432 of the guide groove 43 along its height direction, and the busbar fixing seat 3 abuts against the first sidewall 4311 and the second sidewall 4312 of the guide groove 43 along its length direction.

[0045] At least one side wall of the guide groove 43 also includes a third side wall 4313, which is connected between the first side wall 4311 and the second side wall 4312. The busbar fixing seat 3 abuts against the third side wall 4313 in the width direction. The guide groove 43 also includes an open side opposite to the third side wall 4313. The guide groove 43 also includes a top open end opposite to the bottom wall 432. The top open and the side open facilitate the insertion of the busbar fixing seat 3 into the guide groove 43.

[0046] In some embodiments, as shown in FIG5, two elastic portions 34 are also provided on the two side walls of the busbar fixing seat 3. When the two side walls of the busbar fixing seat 3 abut against the first side wall 4311 and the second side wall 4312 respectively, the two elastic portions 34 form an interference fit with the first side wall 4311 and the second side wall 4312 respectively, which helps to improve the stability of the connection between the busbar fixing seat 3 and the end plate 4.

[0047] In some embodiments, continuing to refer to Figures 1 and 3, each end plate 4 includes two guide grooves 43, and each battery module 100 includes a first end plate 411 and a second end plate 412 opposite to each other. The positive busbar fixing seat 31 is fixed in a guide groove 43 near the rear end of the second end plate 412, and the negative busbar fixing seat 32 is fixed in a guide groove 43 near the front end of the first end plate 411, such that the positive busbar fixing seat 31 and the negative busbar fixing seat 32 are arranged along the diagonal of the top surface of the battery pack 1. The structures of the first end plate 411 and the second end plate 412 are completely identical, which helps to reduce the number of molds for the end plates 4.

[0048] In some embodiments, the end plate 4 further includes a wire harness fixing part 48, which is provided with a wire harness fixing hole 481. The wire harness fixing part 48 is disposed between two guide grooves 43. The positive wire harness 51 connected to the positive busbar 21 and the negative wire harness 52 connected to the negative busbar 22 are bound and fixed by a wire harness cable tie 53, wherein the wire harness cable tie 53 is fixed in the wire harness fixing hole 481.

[0049] In some embodiments, continuing to refer to Figures 3, 6 and 7, the outer surface of the end plate 4 is further provided with at least one automatic line hoisting hole 46 and at least two manual hoisting slots 45, wherein the at least one automatic line hoisting hole 46 is located between the at least two manual hoisting slots 45.

[0050] By simultaneously providing automatic line lifting holes 46 and manual lifting slots 45 on the end plate 4, it is convenient to select either manual lifting tool 9 or automatic lifting line lifting tool 8 to lift the battery module 100 according to actual production or maintenance needs.

[0051] In one specific implementation, manual lifting slots 45 are provided on both sides of the end plate 4. The manual lifting tool 9 can be two lifting hooks, each lifting hook including two bent hooks 91, and the two bent hooks 91 are respectively engaged in the two manual lifting slots 45 of the same end plate 4.

[0052] At least two protruding posts are provided on the outer surface of the end plate 4. Each protruding post is provided with an automatic line hoisting hole 46. Two automatic line hoisting holes 46 are provided at intervals on one end plate 4. The automatic line hoisting tool 8 includes two sets of columns. Each set of columns includes two columns 81. Each column 81 can be inserted into an automatic line hoisting hole 46. The two sets of columns 81 are respectively configured to be inserted into the two automatic line hoisting holes 46 of the two end plates 4.

[0053] In some embodiments, referring further to FIG3, a reinforcing structure 49 is also provided on the outer surface of the end plate 4. The reinforcing structure 49 is connected between the top wall and the side wall of the end plate 4. The reinforcing structure 49 includes multiple reinforcing ribs forming a crisscrossing grid structure. The multiple reinforcing ribs also include diagonal ribs located within the grid. By providing the above-mentioned reinforcing structure 49, the structural strength of the end plate 4 is improved to meet the expansion strength requirements of the battery module 100. Among them, the protrusion where the automatic line hoisting hole 46 is located is located at the center of the grid, and multiple reinforcing ribs are connected to the outer periphery of the protrusion.

[0054] In some embodiments, referring to FIG3, two module fixing holes 42 are provided on both sides of the end plate 4. The module fixing holes 42 are used for inserting connecting rods to connect at least two battery modules 100. The module fixing holes 42 are set as oblong holes to accommodate manufacturing tolerances. The module fixing holes 42 are provided with sufficient wall thickness from the edge of the end plate 4 so that the end plate 4 will not break after being subjected to the expansion of the battery pack 1.

[0055] In a first aspect, embodiments of this application provide a battery module, the battery module comprising:

[0056] A battery pack, comprising multiple batteries arranged side by side;

[0057] An end plate, wherein the end plate is disposed at the end of the battery pack;

[0058] A busbar is located at the top of the battery pack and is electrically connected to multiple of the batteries;

[0059] Busbar mounting base, wherein the busbar mounting base is fixedly connected to one end of the busbar;

[0060] The end plate has a guide groove at the top to accommodate the busbar fixing seat, a buckle at the bottom of the busbar fixing seat, a snap-fit ​​part at the bottom wall of the guide groove, the buckle being fixed in the snap-fit ​​part along a first direction, and the busbar fixing seat abutting against at least two side walls of the guide groove along a second direction, wherein the first direction and the second direction are arranged at an angle.

[0061] In one embodiment, at least two of the sidewalls include opposing first and second sidewalls, and a third sidewall connected between the first and second sidewalls. The busbar mounting base abuts against the third sidewall along a third direction, the third direction being at an angle to the second direction and the third direction being at an angle to the first direction.

[0062] In one embodiment, the side of the busbar fixing seat is provided with an elastic part, which abuts against the side wall of the guide groove.

[0063] In one embodiment, there are two end plates, which are disposed at opposite ends of the battery pack. Each end plate has two guide grooves. There are also two busbar fixing seats, which include a positive busbar fixing seat and a negative busbar fixing seat. The positive busbar fixing seat is fixed in one of the guide grooves of one of the end plates, and the negative busbar fixing seat is fixed in one of the guide grooves of the other end plate. The positive busbar fixing seat and the negative busbar fixing seat are arranged along the diagonal of the top surface of the battery pack.

[0064] In one embodiment, the end plate further includes a wire harness fixing part located between the two guide grooves, the wire harness fixing part having a wire harness fixing hole, the battery module including a wire harness electrically connected to the busbar, the wire harness being fixed to the wire harness fixing hole.

[0065] In one embodiment, the battery module further includes a fixing strap for fixing the battery pack. A fixing strap limiting groove is provided on the side wall of the end plate, and the fixing strap is received in the fixing strap limiting groove. An insulating sleeve is also sleeved on a portion of the outer surface of the fixing strap. The groove wall of the fixing strap limiting groove includes a clearance portion for clearance of the insulating sleeve.

[0066] In one embodiment, the outer side of the end plate is further provided with a reinforcing structure, the reinforcing structure being connected between the top wall of the end plate and the side wall of the end plate, and the reinforcing structure being provided with at least one automatic line hoisting hole.

[0067] In one embodiment, the outer side of the end plate is further provided with at least two manual hoisting slots, and at least one of the automatic line hoisting holes is located between at least two of the manual hoisting slots.

[0068] Secondly, embodiments of this application provide an end plate, the end plate including the end plate of the battery module described above.

[0069] Thirdly, embodiments of this application also provide a battery pack, which includes a housing and a plurality of battery modules disposed inside the housing, the battery modules including the battery modules provided in the above embodiments.

Claims

1. A battery module (100), comprising: The battery pack (1) includes multiple batteries (10) arranged side by side. End plate (4), the end plate (4) is disposed at the end of the battery pack (1); Busbar (2) is located on top of the battery pack (1) and is electrically connected to a plurality of the batteries (10). Busbar fixing seat (3), the busbar fixing seat (3) is fixedly connected to one end of the busbar (2); The top wall of the end plate (4) is provided with a guide groove (43) to accommodate the busbar fixing seat (3). The bottom of the busbar fixing seat (3) is provided with a buckle (33). The bottom wall of the guide groove (43) is provided with a snap-fit ​​part (433). The buckle (33) is fixed in the snap-fit ​​part (433) along the first direction. The busbar fixing seat (3) abuts against at least two side walls (4311, 4312) where the guide groove (43) is located along the second direction. The first direction and the second direction are set at an angle.

2. The battery module (100) according to claim 1, wherein, At least two of the sidewalls (4311, 4312) include a first sidewall (4311) and a second sidewall (4312) opposite to each other, and a third sidewall (4313) connecting the first sidewall (4311) and the second sidewall (4312). The busbar fixing seat (3) abuts against the third sidewall (4313) along a third direction, the third direction being set at an angle to the first direction and the third direction being set at an angle to the second direction.

3. The battery module (100) according to claim 1, wherein, The side of the busbar fixing seat (3) is provided with an elastic part (34), which abuts against the side wall of the guide groove (43).

4. The battery module (100) according to claim 1, wherein, The number of end plates (4) is two, and the two end plates (4) are disposed at the two opposite ends of the battery pack (1). Each end plate (4) is provided with two guide grooves (43). The busbar fixing seat (3) includes a positive busbar fixing seat (31) and a negative busbar fixing seat (32). The positive busbar fixing seat (31) is fixed in one of the guide grooves (43) of one of the end plates (4), and the negative busbar fixing seat (32) is fixed in one of the guide grooves (43) of the other end plate (4).

5. The battery module (100) according to claim 4, wherein, The positive busbar holder (31) and the negative busbar holder (32) are arranged diagonally along the top surface of the battery pack (1).

6. The battery module (100) according to claim 4, wherein, The end plate (4) also includes a wire harness fixing part (48) located between the two guide grooves (43), the wire harness fixing part (48) is provided with a wire harness fixing hole (481), the battery module (100) includes a wire harness (5) electrically connected to the busbar (2), and the wire harness (5) is fixed to the wire harness fixing hole (481).

7. The battery module (100) according to any one of claims 1-6, wherein, The battery module (100) also includes a fixing strap (6), which is used to fix the battery pack (1). The side wall of the end plate (4) is provided with a fixing strap limiting groove (47), and the fixing strap (6) is received in the fixing strap limiting groove (47).

8. The battery module (100) according to claim 7, wherein, An insulating sleeve (61) is also fitted on the outer surface of a portion of the fixing band (6), and the groove wall of the fixing band limiting groove (47) includes a clearance part (472), which is configured to clearance the insulating sleeve (61).

9. The battery module (100) according to claim 7, wherein, The outer side of the end plate (4) is also provided with a reinforcing structure (49), which is connected between the top wall of the end plate (4) and the side wall of the end plate (4). The reinforcing structure (49) is provided with at least one automatic line hoisting hole (46).

10. The battery module (100) according to claim 9, wherein, The outer side of the end plate (4) is provided with two manual hoisting slots (45), and at least one of the automatic line hoisting holes (46) is located between the two manual hoisting slots (45).

11. The battery module (100) according to claim 10, wherein, The outer side of the end plate (4) is also provided with at least two manual hoisting slots (45), and at least one of the automatic line hoisting holes (46) is located between at least two of the manual hoisting slots (45).

12. The battery module (100) according to claim 1, wherein, The inner surface of the end plate (4) is provided with an overflow groove (44).

13. An end plate (4), the end plate (4) comprising the end plate (4) of the battery module (100) according to any one of claims 1-12.

14. A battery pack, comprising a housing and at least one battery module (100) disposed inside the housing, the battery module (100) comprising the battery module (100) according to any one of claims 1-12.

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