End plate, battery module and battery pack

Abstract

The utility model provides an end plate, a battery module and a battery pack, the battery module comprises a battery pack which comprises a plurality of batteries arranged side by side; the end plate is arranged at the end part of the battery pack; the busbar is positioned at the top of the battery pack and is electrically connected to the plurality of batteries; the busbar fixing seat is fixedly connected to one end of the busbar; wherein the top of the end plate is provided with a guide groove for accommodating the busbar fixing seat, the bottom of the busbar fixing seat is provided with a buckle, the bottom wall of the guide groove is provided with a clamping part, and the buckle is fixed in the clamping part along a first direction; the busbar fixing base abuts against at least two side walls where the guide groove is located in the second direction, and an included angle is formed between the first direction and the second direction.

Description

Technical Field

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

[0002] The battery module includes an end plate, which is used to fix the battery and the bus in the battery module. When the end plate is formed of metal material, the bus is fixed to the end plate through a bus fixing seat. The bus fixing seat is usually fixed to the end plate in a single fixing method. When the battery module is subjected to severe vibration, the bus fixing seat and the end plate are prone to loosening, thereby affecting the stability of the overall structure of the battery module bus. Utility Model Content

[0003] The embodiments of the present invention provide an end plate, a battery module and a battery pack, which can improve the technical problem of unstable fixation of a busbar fixing seat.

[0004] In a first aspect, an embodiment of the present invention provides a battery module, comprising:

[0005] a battery pack comprising a plurality of batteries arranged side by side;

[0006] an end plate, the end plate being arranged at an end of the battery pack;

[0007] a bus bar located on the top of the battery pack and electrically connected to the plurality of batteries;

[0008] A busbar fixing seat, the busbar fixing seat being fixedly connected to one end of the busbar;

[0009] In which, a guide groove is provided on the top of the end plate to accommodate the bus fixing seat, a clip is provided on the bottom of the bus fixing seat, and a clip is provided on the bottom wall of the guide groove. The clip is fixed in the clip portion along a first direction, and the bus fixing seat abuts against at least two side walls of the guide groove along a second direction, and the first direction and the second direction are set at an angle.

[0010] In one embodiment, at least two of the side walls include a first side wall and a second side wall relative to each other, and a third side wall connected between the first side wall and the second side wall, and the bus bar fixing seat abuts against the third side wall along a third direction, and the third direction is set at an angle to the second direction, and the third direction is set at an angle to the first direction.

[0011] In one embodiment, an elastic portion is provided on a side of the busbar fixing seat, and the elastic portion abuts against a side wall of the guide groove.

[0012] In one embodiment, there are two end plates, and the two end plates are arranged at the two opposite ends of the battery pack, and each end plate is provided with two guide grooves; there are two bus bar fixing seats, and the two bus bar fixing seats include a positive bus bar fixing seat and a negative bus bar fixing seat, the positive bus bar fixing seat is fixed in one of the guide grooves of one of the end plates, and the negative bus bar fixing seat is fixed in one of the guide grooves of the other end plate, and the positive bus bar fixing seat and the negative bus bar fixing seat are arranged along the diagonal line of the top surface of the battery pack.

[0013] In one embodiment, the end plate further includes a wiring harness fixing portion located between the two guide grooves, the wiring harness fixing portion is provided with a wiring harness fixing hole, the battery module includes a wiring harness electrically connected to the bus, and the wiring harness is fixed to the wiring harness fixing hole.

[0014] In one embodiment, the battery module further includes a fixing strap, which is used to fix the battery pack. A fixing strap limiting groove is provided on the side wall of the end plate, and the fixing strap is accommodated in the fixing strap limiting groove; an outer surface of a portion of the fixing strap is further provided with an insulating sleeve, and the groove wall of the fixing strap limiting groove includes an avoidance portion, which is used to avoid the insulating sleeve.

[0015] In one embodiment, a reinforcement structure is further provided on the outer side of the end plate, the reinforcement structure is connected between the top wall of the end plate and the side wall of the end plate, and the reinforcement structure is provided with at least one automatic line hoisting hole.

[0016] In one embodiment, at least two manual hoisting slots are further provided on the outer side of the end plate, and at least one automatic line hoisting hole is located between the at least two manual hoisting slots.

[0017] In a second aspect, an embodiment of the present invention provides an end plate, which includes the end plate of the above-mentioned battery module.

[0018] In a third aspect, an embodiment of the present invention provides a battery module, comprising a box and a plurality of battery modules arranged inside the box, wherein the battery module comprises the above-mentioned battery module.

[0019] Beneficial effects of the embodiments of the present utility model:

[0020] In an embodiment of the present invention, a guide groove is provided on the end plate, and the busbar fixing seat is abutted against the two side walls where the wire groove is located along the second direction. At the same time, a clamping structure is formed between the end plate and the busbar fixing seat. The clamping structure provides a clamping force along the first direction, so that at least two forces in different directions are formed between the end plate and the busbar fixing seat, thereby effectively improving the loosening problem between the end plate and the busbar fixing seat caused by severe vibration of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a three-dimensional structural diagram of a battery module provided by an embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 A partial enlarged view of

[0024] Figure 3 This is a three-dimensional structural diagram of an end plate provided by an embodiment of the present utility model at one angle;

[0025] Figure 4 This is a three-dimensional view of the end plate provided by an embodiment of the present utility model from another angle;

[0026] Figure 5 This is a three-dimensional diagram of a busbar fixing seat provided in an embodiment of the present utility model;

[0027] Figure 6 This is a structural diagram of an automatic line hoisting tool for hoisting a battery module provided by an embodiment of the present utility model;

[0028] Figure 7 This is a structural diagram of a manual wire lifting tool for lifting a battery module provided by an embodiment of the present utility model;

[0029] Figure Number:

[0030] 100. Battery module;

[0031] 1. Battery pack; 10. Battery; 121. First side; 122. Second side;

[0032] 2. Busbar; 21. Positive busbar; 211. First positive electrode connecting piece; 22. Negative busbar; 221. First negative electrode connecting piece;

[0033] 3. Busbar fixing seat; 31. Positive busbar fixing seat; 32. Negative busbar fixing seat; 33. Buckle; 34. Elastic part;

[0034] 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. Clamping portion; 44. Glue overflow groove; 45. Manual lifting groove; 46. Automatic line lifting hole; 47. Fixed belt limit groove; 471. Guide angle; 472. Avoidance portion; 48. Wire harness fixing portion; 481. Wire harness fixing hole; 49. Reinforcement structure;

[0035] 5. Wiring harness; 51. Positive wiring harness; 52. Negative wiring harness; 53. Wiring harness tie; 6. Fixing strap; 61. Insulation sleeve; 7. Insulation sheet; 8. Automatic wire lifting tool; 81. Column; 9. Manual lifting tool; 91. Hook. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention. In the present invention, unless otherwise specified, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0037] The embodiment of the present application provides a battery module, such as Figures 1 to 3 As shown, the battery module 100 includes a battery pack 1 , a bus bar 2 , at least two bus bar fixing bases 3 , at least two end plates 4 , a wiring harness 5 and at least one fixing belt 6 .

[0038] The battery pack 1 includes a plurality of batteries 10 arranged side by side, and each battery 10 can be a square battery or a cylindrical battery. A pole is provided at the top of each battery 10. In a specific embodiment, a positive pole and a negative pole are provided at the top of each battery 10, and the positive pole and the negative pole are symmetrically arranged about the central axis of the battery 10. The battery pack 1 includes a plurality of positive poles and a plurality of negative poles arranged in rows. In other optional examples, only one positive pole or one negative pole is provided at the top of each battery 10, and the battery pack 1 includes a plurality of positive poles or a plurality of negative poles arranged in rows. The battery pack 1 also includes a first end 121 and a second end 122 opposite to each other, and the first end 121 and the second end 122 are arranged along the thickness direction of the battery pack 1.

[0039] The busbar 2 includes a positive busbar 21 and a negative busbar 22. The positive busbar 21 includes multiple positive connectors arranged side by side, each used to connect the positive poles of two adjacent battery cells. The negative busbar 22 includes multiple negative connectors arranged side by side, each used to connect the negative poles of two adjacent battery cells. The positive and negative connectors can be copper, aluminum, or copper-aluminum composite.

[0040] The wiring harness 5 includes a positive wiring harness 51 and a negative wiring harness 52 . Each positive connection piece in the positive busbar 21 is electrically connected to the positive wiring harness 51 , and each negative connection piece in the negative busbar 22 is connected to the negative wiring harness 52 .

[0041] The busbar holder 3 includes a positive busbar holder 31 and a negative busbar holder 32. The positive busbar 21 includes a first positive connecting tab 211 located near the first end 121 of the battery pack 1. The first positive connecting tab 211 serves as the positive output of the battery pack 1. One end of the first positive connecting tab 211 is fixed to the positive electrode post of the battery 10 located at the first end 121, and the other end of the first positive connecting tab 211 is fixed to the positive busbar holder 31 via bolts. The negative busbar 22 includes a first negative connecting tab 221 located near the second end 122 of the battery pack 1. The first negative connecting tab 221 serves as the negative output of the battery pack 1. One end of the first negative connecting tab 221 is fixed to the negative electrode post of the battery 10 located at the second end 122, and the other end of the first negative connecting tab 221 is fixed to the negative busbar holder 32 via bolts.

[0042] At least 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-casted from a high-strength metal material.

[0043] At least one fixing strap 6 is combined with at least two end plates 4 to secure 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. The fixing strap 6 includes an upper fixing strap and a lower fixing strap. The first end plate 411 is placed at the first end 121 of the battery pack 1, and the second end plate 412 is placed at the second end 122 of the battery pack 1. The upper fixing strap and the lower fixing strap are both sleeved around the outside of the first and second end plates 411, 412 and used to secure the first and second end plates 411, 412. The upper fixing strap is positioned near the top of the battery pack 1, and the lower fixing strap is positioned near the bottom of the battery pack 1. Both the upper fixing strap and the lower fixing strap are configured to circumferentially surround the battery pack 1, thereby providing circumferential fixation for the multiple batteries 10 in the battery pack 1.

[0044] In order to prevent the upper fixing belt and the lower fixing belt from sliding relative to the end plate 4 after being sleeved on the outside of the end plate 4, thereby affecting the fixing effect of the fixing belt on the battery pack 1, in some embodiments provided in the present application, such as Figure 1 and Figure 3 As shown, a fixing belt limiting groove 47 is further provided on the end plate 4, and the fixing belt 6 is configured to be accommodated in the fixing belt limiting groove 47 so as to remain fixed relative to the end plate 4. Specifically, two fixing belt limiting grooves 47 are provided on the two side walls of each end plate 4. The depth of the fixing belt limiting groove 47 is substantially equal to the thickness of the fixing belt 6. The width of the fixing belt limiting groove 47 is adaptively designed according to the width of the fixing belt 6. In a preferred embodiment, the width of the fixing belt limiting groove 47 is set to 31 mm, so that the width of the fixing belt 6 that can be compatible with the fixing belt limiting groove 47 can be any width between 15 mm and 30 mm. For example, the compatible widths of the fixing belt 6 are 19 mm, 23 mm, and 30 mm.

[0045] Further, if Figure 1 and Figure 3 As shown, guide angles 471 are provided on the top and bottom walls of the end plate 4, which facilitate the fixing belt 6 to be quickly fitted onto the outside of the first end plate 411, the battery pack 1 and the second end plate 412 and positioned in the fixing belt limiting groove 47.

[0046] When the fixing strap 6 is a steel strap, an insulating sleeve 61 is provided on the outer surface of the fixing strap 6 that contacts the multiple batteries 10. This insulating sleeve 61 is made of a plastic material to insulate the fixing strap 6 from the battery pack 1. To prevent interference between the fixing strap retaining groove 47 and the insulating sleeve 61, a relief portion 472 is provided in the portion of the fixing strap retaining groove 47 near the batteries 10. This relief portion 472 is located within the fixing strap retaining groove 47 and is deeper than the rest of the fixing strap retaining groove 47.

[0047] Furthermore, if Figure 1 、 Figure 2 and Figure 4 As shown, the battery module 100 also includes multiple insulating sheets 7 made of a plastic material, with PC being a suitable plastic material. The insulating sheets 7 can be positioned between adjacent cells to provide insulation. They can also be positioned between the first end plate 411 and the battery 10 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 positioned between the second end plate 412 and the battery 10 at the second end 122 of the battery pack 1 to provide insulation between the second end plate 412 and the battery 10. Adhesive is used to bond the insulating sheets 7 to the first end plate 411. However, the amount of adhesive used is difficult to control. To prevent excess adhesive from overflowing onto the surface of the end plate 4, an adhesive overflow groove 44 is provided on the inner surface of the end plate 4. The cross-section of the adhesive overflow groove 44 is a circumferentially closed rectangular shape to absorb excess adhesive. The depth of the adhesive overflow groove 44 ranges from 0.1 mm to 2 mm, and the width ranges from 1 mm to 5 mm. In a specific implementation, the depth of the glue overflow groove 44 is 1 mm, and the width of the glue overflow groove 44 is 3 mm.

[0048] In the related art, the output row in the positive bus 21 is fixed to the positive bus fixing seat 31, and the output row in the negative bus 22 is fixed to the negative bus fixing seat 32. The positive bus fixing seat 31 or the negative bus fixing seat 32 is fixed to the end plate 4 by a single fixing method. When the battery module is subjected to severe vibration, the bus fixing seat 3 and the end plate 4 are prone to loosening, thereby affecting the stability of the overall structure of the bus of the battery module.

[0049] In the embodiments of the present application, Figures 1 to 3 As shown, a guide groove 43 is provided on the end plate 4, which is used to fix the busbar fixing base 3. One of the end plate 4 and the busbar fixing base 3 is provided with a buckle 33, and the other of the end plate 4 and the busbar fixing base 3 is provided with a clamping portion 433. The clamping portion 433 can be a clamping hole or a clamping groove, and the buckle 33 is clamped with the clamping portion 433. The buckle 33 or the clamping portion 433 is located in the guide groove 43, and the buckle 33 and the clamping portion 433 are clamped together along a first direction. The busbar fixing base 3 abuts at least one side wall where the guide groove 43 is located along a second direction.

[0050] 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 of the busbar fixing seat 3 or the length direction of the busbar fixing seat 3. The buckle 33 is engaged with the engaging portion 433, thereby limiting 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 limiting 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 Figure 4 In the z direction shown, the width direction of the busbar fixing seat 3 is set to Figure 4 Since there are forces acting in at least two directions between the busbar fixing base 3 and the end plate 4, even if the battery module 100 is subjected to severe vibration, the busbar fixing base 3 and the end plate 4 are unlikely to become loose, thereby improving the stability of the overall busbar structure.

[0051] Further, continue to refer to Figure 1 and Figure 3 At least one side wall of the guide slot 43 includes a first side wall 4311 and a second side wall 4312 that are opposed to each other. The guide slot 43 also includes a bottom wall 432 connected between the first side wall 4311 and the second side wall 4312. Two engaging portions 433 are provided on the bottom wall 432, each of which is configured as an engaging hole. Two latches 33 are provided on the bottom end surface of the busbar holder 3. The busbar holder 3 is engaged with the bottom wall 432 of the guide slot 43 along its height direction and abuts against the first side wall 4311 and the second side wall 4312 of the guide slot 43 along its length direction.

[0052] Furthermore, 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, and the bus fixing seat 3 abuts against the third side wall 4313 along the width direction, wherein the guide groove 43 also includes an open side opposite to the third side wall 4313, and the guide groove 43 also includes a top open end opposite to the bottom wall 432, and the top opening and the side opening facilitate the insertion of the bus fixing seat 3 into the guide groove 43.

[0053] In some embodiments, as Figure 5 As shown, two elastic parts 34 are also provided on the two side walls of the busbar fixing base 3. When the two side walls of the busbar fixing base 3 respectively abut against the first side wall 4311 and the second side wall 4312, the two elastic parts 34 respectively form an interference fit with the first side wall 4311 and the second side wall 4312, which is beneficial to further improve the stability of the connection between the busbar fixing base 3 and the end plate 4.

[0054] In some embodiments, continue to refer to Figure 1 and Figure 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 relative to each other, wherein the positive busbar fixing seat 31 is fixed in a guide groove 43 of the second end plate 412 near its rear end, and the negative busbar fixing seat 32 is fixed in a guide groove 43 of the first end plate 411 near its front end, so that the positive busbar fixing seat 31 and the negative busbar fixing seat 32 are arranged along the diagonal line of the top surface of the battery pack 1, wherein the structures of the first end plate 411 and the second end plate 412 are arranged to be exactly the same, which is beneficial to reducing the number of molds of the end plate 4.

[0055] In some embodiments, the end plate 4 also includes a wire harness fixing portion 48, which is provided with a wire harness fixing hole 481. The wire harness fixing portion 48 is arranged between the two guide grooves 43, and the positive wire harness 51 connected to the positive bus 21 and the negative wire harness 52 connected to the negative bus 22 are bundled and fixed by a wire harness tie 53, wherein the wire harness tie 53 is fixed in the wire harness fixing hole 481.

[0056] In some embodiments, continue to refer to Figure 3 、 Figure 6 and Figure 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 , and the at least one automatic line hoisting hole 46 is located between the at least two manual hoisting slots 45 .

[0057] By providing both the automatic lifting hole 46 and the manual lifting slot 45 on the end plate 4, it is convenient to choose to use the manual lifting tool 9 or the automatic lifting line lifting tool 8 to lift the battery module 100 according to actual production or maintenance needs.

[0058] In a specific implementation, manual lifting grooves 45 are provided on both sides of the end plate 4 , and the manual lifting tools 9 can be two lifting hooks, each of which includes two curved hooks 91 , and the two curved hooks 91 are respectively clamped in the two manual lifting grooves 45 of the same end plate 4 .

[0059] At least two bosses are provided on the outer surface of the end plate 4, each boss is provided with an automatic line hoisting hole 46, and two automatic line hoisting holes 46 are provided at intervals on one end plate 4. The automatic line hoisting tool 8 includes two groups of columns, each group of columns includes two columns 81, and each column 81 can be inserted into an automatic line hoisting hole 46. The two groups of columns 81 are respectively arranged to be inserted into the two automatic line hoisting holes 46 of the two end plates 4.

[0060] In some embodiments, continue to refer to Figure 3The outer surface of the end plate 4 is also provided with a reinforcement structure 49, which is connected between the top wall and the side walls of the end plate 4. The reinforcement structure 49 includes multiple reinforcing ribs, which form a crisscross grid structure. The multiple reinforcing ribs also include diagonal ribs located within the grid. The provision of the above-mentioned reinforcement structure 49 further improves the structural strength of the end plate 4 to meet the expansion strength requirements of the battery module 100. The boss where the automatic line lifting hole 46 is located is located at the center of the grid, and multiple reinforcing ribs are connected to the periphery of the boss.

[0061] In some embodiments, continue to refer to Figure 3 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 waist-shaped holes so as to be compatible with manufacturing tolerances, and the module fixing holes 42 are left 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.

[0062] An embodiment of the present application further provides a battery pack, which includes a box body and a plurality of battery modules arranged inside the box body, and the battery modules include the battery modules provided in the above embodiment.

[0063] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. At the same time, for those skilled in the art, based on the idea of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A battery module, characterized in that: include: A battery pack comprising a plurality of batteries arranged side by side; an end plate, the end plate being arranged at an end of the battery pack; a bus bar located on the top of the battery pack and electrically connected to the plurality of batteries; A busbar fixing seat, the busbar fixing seat being fixedly connected to one end of the busbar; In which, the top wall of the end plate is provided with a guide groove to accommodate the bus fixing seat, the bottom of the bus fixing seat is provided with a clip, the bottom wall of the guide groove is provided with a clipping portion, the clip is fixed in the clipping portion along a first direction, and the bus fixing seat is abutted against at least two side walls of the guide groove along a second direction, and the first direction and the second direction are set at an angle.

2. The battery module according to claim 1, wherein: At least two of the side walls include a first side wall and a second side wall relative to each other, and a third side wall connected between the first side wall and the second side wall. The busbar fixing seat abuts against the third side wall along a third direction, and the third direction is set at an angle to the first direction, and the third direction is set at an angle to the second direction.

3. The battery module according to claim 1, wherein: An elastic portion is provided on the side of the busbar fixing seat, and the elastic portion abuts against the side wall of the guide groove.

4. The battery module according to claim 1, wherein: There are two end plates, and the two end plates are arranged at the two opposite ends of the battery pack, and each end plate is provided with two guide grooves; the busbar fixing seat includes 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, and the positive busbar fixing seat and the negative busbar fixing seat are arranged along the diagonal line of the top surface of the battery pack.

5. The battery module according to claim 4, characterized in that: The end plate further includes a wiring harness fixing portion located between the two guide grooves, the wiring harness fixing portion is provided with a wiring harness fixing hole, the battery module includes a wiring harness electrically connected to the bus bar, and the wiring harness is fixed in the wiring harness fixing hole.

6. The battery module according to any one of claims 1 to 5, characterized in that: The battery module also includes a fixing strap, which is used to fix the battery pack. A fixing strap limiting groove is provided on the side wall of the end plate, and the fixing strap is accommodated in the fixing strap limiting groove; the outer surface of a portion of the fixing strap is also provided with an insulating sleeve, and the groove wall of the fixing strap limiting groove includes an avoidance portion, which is used to avoid the insulating sleeve.

7. The battery module according to claim 6, characterized in that: A reinforcement structure is further provided on the outer side of the end plate, and the reinforcement structure is connected between the top wall of the end plate and the side wall of the end plate. The reinforcement structure is provided with at least one automatic line hoisting hole.

8. The battery module according to claim 7, characterized in that: At least two manual hoisting slots are further provided on the outer side of the end plate, and at least one automatic line hoisting hole is located between the at least two manual hoisting slots.

9. An end plate, characterized in that: The end plate comprises the end plate of the battery module according to any one of claims 1 to 8.

10. A battery pack, characterized in that: The invention comprises a box body and at least one battery module arranged inside the box body, wherein the battery module comprises the battery module according to any one of claims 1 to 8.

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