Battery top cover assembly, processing equipment, battery shell and battery monomer

Abstract

The invention provides a battery top cover assembly, processing equipment, a battery shell and a battery monomer, and relates to the technical field of batteries, the battery top cover assembly comprises a top cover plate, a pole and a sealing element, the top cover plate is provided with a mounting hole, a first pressing structure is arranged on the outer side surface of the top cover plate and around the edge of the mounting hole, and the pole is mounted in the mounting hole; the sealing element is arranged between the side wall of the pole and the hole wall of the mounting hole, the outer side face of the sealing element is attached to the inner side face of the first pressing structure, the first pressing structure is provided with a first indentation protrusion deforming towards the sealing element, and the first indentation protrusion is used for pressing and fixing the pole towards the pole on the outer side face of the sealing element. The sealing element is compressed through the first indentation protrusion to compress and fix the pole, so that the complexity of an assembly process is reduced during assembly, a welding or injection molding process is not needed, the energy consumption can be reduced, no metal filing is generated, the performance of the battery is not influenced, batch and rapid production can be realized, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a battery top cover assembly and processing equipment, a battery shell and a battery monomer. Background Art

[0002] New energy vehicles can reduce exhaust emissions and are beneficial to environmental protection, but at the same time they also put forward higher requirements on secondary batteries, the core components of new energy vehicles. For example, secondary batteries need to have higher energy density and lower cost.

[0003] In the prior art, the outer shell of a secondary battery generally adopts a square hard shell structure. The outer shell of the secondary battery includes a shell and a top cover assembly. The electric energy of the electrode assembly is led out from the inside of the electrode assembly through the pole of the top cover assembly. However, in the existing top cover assembly, the top cover plate is a metal plate and has a through hole. During assembly, after the pole passes through the through hole, it is fixed by riveting or overmolding. The assembly process is complicated, resulting in low assembly efficiency and high assembly cost. Summary of the invention

[0004] The purpose of the present application is to provide a battery top cover assembly and processing equipment, a battery housing and a battery cell, so as to solve the technical problem of complex assembly process of the battery top cover assembly in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in this application is: In the first aspect, the present application provides a battery top cover assembly, including: a top cover plate, a pole and a seal, the top cover plate is provided with a mounting hole, and a first clamping structure is provided on the outer side surface of the top cover plate and around the edge of the mounting hole; the pole is installed in the mounting hole; the seal is provided between the side wall of the pole and the hole wall of the mounting hole, the outer side surface of the seal is in contact with the inner side surface of the first clamping structure, the first clamping structure has a first indentation protrusion deformed toward the seal, and the first indentation protrusion is used to press and fix the pole toward the pole on the outer side surface of the seal.

[0006] In one or more embodiments of the present application, the first clamping structure and the top cover plate are an integral structure, the first clamping structure is an annular structure protruding from the edge of the mounting hole in a direction away from the top cover plate, the first clamping structure has a first inner side surface that fits the seal and a first outer side surface away from the seal, wherein the first indentation protrusion is formed by pressure deformation from the first outer side surface to the first inner side surface; or, the first clamping structure and the top cover plate are a split structure, a connecting ring extends from the end of the first clamping structure, the connecting ring extends in a direction away from the central axis of the mounting hole, the connecting ring is connected to the top cover plate, the first clamping structure is an annular structure protruding from the edge of the mounting hole in a direction away from the top cover plate, the first clamping structure has a first inner side surface that fits the seal and a first outer side surface away from the seal, wherein the first indentation protrusion is formed by pressure deformation from the first outer side surface to the first inner side surface.

[0007] In one or more embodiments of the present application, a receiving groove is formed on a side of the pole facing the interior of the battery, the notch of the receiving groove faces the interior of the battery, and the bottom of the receiving groove is located inside the mounting hole.

[0008] In one or more embodiments of the present application, a second clamping structure is formed on the side of the pole facing the interior of the battery, the second clamping structure is the side wall of the accommodating groove, the side of the second clamping structure is in contact with the inner side of the seal, the second clamping structure has a second indentation protrusion that is deformed toward the seal, and the second indentation protrusion is used to compress and fix the pole toward the seal on the inner side wall of the accommodating groove; the second clamping structure has a second outer side surface that is in contact with the seal and a second inner side surface away from the seal, and the second indentation protrusion is deformed by applying pressure from the second inner side surface to the second outer side surface.

[0009] In one or more embodiments of the present application, a support ring extends from the end of the second clamping structure away from the bottom of the accommodating groove, and the support ring extends from the connection with the second clamping structure in a direction away from the central axis of the pole, and the seal also includes a horizontal portion, and the horizontal portion is sealed and arranged between the support ring and the top cover plate.

[0010] In one or more embodiments of the present application, the thickness of the first compression structure is 0.5-1.5 mm; and / or the thickness of the second compression structure is 0.5-1.5 mm.

[0011] In the second aspect, the present application also provides a processing equipment for processing the battery top cover assembly described in any one of the first aspect, the processing equipment comprising: an external pressure device, the external pressure device is sleeved on the outer side of the first clamping structure, the external pressure device comprises an external pressure shell and an external pressure tooth arranged on the external pressure shell, a first driving mechanism is arranged in the external pressure shell, which is used to drive the external pressure tooth to move toward the first outer side surface of the first clamping structure so that the external pressure tooth applies pressure from the first outer side surface of the first clamping structure to the first inner side surface to form a first indentation protrusion, and presses and fixes the pole column on the outer side surface of the seal, and / or, the processing equipment also comprises: an internal pressure device, the internal pressure device is arranged on the inner side of the second clamping structure, the internal pressure device comprises an internal pressure shell and an internal pressure tooth arranged on the internal pressure shell, a second driving mechanism is arranged in the internal pressure shell, which is used to drive the internal pressure tooth to move toward the second inner side surface of the second clamping structure so that the internal pressure tooth applies pressure from the second inner side surface of the second clamping structure to the second outer side surface to form a second indentation protrusion, and presses and fixes the pole column on the inner side surface of the pole column toward the seal.

[0012] In one or more embodiments of the present application, the external pressure shell includes an outer wall, a middle wall and an inner wall arranged in sequence from the outside to the inside, wherein a first cavity is formed between the outer wall and the middle wall, a first driving mechanism is placed in the first cavity, a first through hole and a second through hole are respectively provided at the bottom of the middle wall and the inner wall, the external pressure tooth includes a first connecting rod and a first pressing tooth, the first pressing tooth is connected to one end of the first connecting rod, the first pressing tooth is arranged toward the second side of the first clamping structure, the first connecting rod passes through the second through hole and the first through hole in sequence and is placed in the first cavity, and the first driving mechanism drives the first connecting rod to move so that it drives the first The pressure tooth abuts against the second side surface, and a first pressure monitoring device is provided on the first connecting rod; and / or, the internal pressure shell includes an outer shell and an inner shell, a second cavity is formed in the inner shell, the second driving mechanism is placed in the second cavity, a third through hole and a fourth through hole are respectively provided on the top of the outer shell and the inner shell, the internal pressure tooth includes a second connecting rod and a second pressure tooth, the second pressure tooth is connected to one end of the second connecting rod, the second connecting rod passes through the third through hole and the fourth through hole in sequence and is placed in the second cavity, and the second connecting rod is driven by the second driving mechanism to move so that it drives the second pressure tooth to abut against the second inner side surface, and a second pressure monitoring device is provided on the second connecting rod.

[0013] On the third aspect, the present application also provides a battery casing, comprising: a shell, a pole and a seal, a mounting hole is provided on the wall of the shell, and a first clamping structure is provided on the outer side surface of the shell and around the edge of the mounting hole; the pole is installed in the mounting hole; the seal is provided between the side wall of the pole and the hole wall of the mounting hole, the outer side surface of the seal is fitted with the inner side surface of the first clamping structure, the first clamping structure has a first indentation protrusion deformed toward the seal, and the first indentation protrusion is used to press and fix the pole toward the pole on the outer side surface of the seal.

[0014] In a fourth aspect, the present application further provides a battery cell, comprising the battery top cover assembly described in any one of the first aspect or the battery casing described in the third aspect.

[0015] Based on the above technical solution, the battery top cover assembly and processing equipment, battery housing and battery cell provided by this application have at least the following beneficial technical effects: The battery top cover assembly provided by the present application is provided with a first clamping structure on the outer side of the top cover plate around the edge of the mounting hole, and the inner side of the first clamping structure and the outer side of the seal are attached to each other, so that the first clamping structure is deformed toward the seal and the pole to form a first indentation protrusion, and then the seal is compressed and fixed to the pole by the first indentation protrusion. The battery top cover assembly of the present application reduces the complexity of the assembly process during assembly, and the assembly does not require welding or injection molding processes, which reduces energy consumption, and no metal chips are generated, which will not affect the battery performance, and can achieve rapid batch production, reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the battery top cover assembly of the present application.

[0018] Figure 2 It is a schematic diagram of the exploded structure of the battery top cover assembly of the present application.

[0019] Figure 3 It is a side view of a battery top cover assembly according to an embodiment of the present application.

[0020] Figure 4 yes Figure 3 BB cross-section diagram in.

[0021] Figure 5 yes Figure 4 Enlarged view of point A in .

[0022] Figure 6 It is a cross-sectional view of a battery top cover assembly according to another embodiment of the present application.

[0023] Figure 7 yes Figure 6 Enlarged view of point B in .

[0024] Figure 8 It is a cross-sectional view of a battery top cover assembly according to another embodiment of the present application.

[0025] Fig. 9 yes Figure 8 Enlarged view of point C in .

[0026] Fig.10 yes Fig. 9 Schematic diagram of the explosion structure.

[0027] Fig.11 It is a structural schematic diagram of the positions of the poles and mounting holes of a battery top cover assembly according to another embodiment of the present application.

[0028] Fig.12 yes Fig.11 Schematic diagram of the explosion structure.

[0029] Fig.13 It is a schematic diagram of the three-dimensional structure of the external pressure device of the present application.

[0030] Fig.14 It is a three-dimensional structural schematic diagram of the external pressure device of the present application from another perspective.

[0031] Fig.15 It is a bottom view of the external pressure device of the present application.

[0032] Fig.16 yes Fig.15 EE cross-section diagram in.

[0033] Fig.17 It is a structural schematic diagram of the external pressure teeth in the external pressure device of the present application.

[0034] Fig.18 It is a schematic diagram of the function of the external pressure teeth in the external pressure device of the present application.

[0035] Fig.19 It is a schematic diagram of the three-dimensional structure of the internal pressure device of the present application.

[0036] Fig. 20 It is a three-dimensional structural schematic diagram of the internal pressure device of the present application from another perspective.

[0037] Fig.21 It is a bottom view of the internal pressure device of the present application.

[0038] Fig. 22 yes Fig.21 BB cross-section diagram in.

[0039] Fig.23 It is a schematic diagram of the three-dimensional structure of the internal pressure shell in the internal pressure device of the present application.

[0040] Fig.24 It is a schematic structural diagram of the internal pressure teeth in the internal pressure device of the present application.

[0041] Fig.25It is a bottom view of the internal pressure shell in the internal pressure device of the present application.

[0042] Fig.26 yes Fig.25 Middle CC cross-section.

[0043] Fig. 27 It is a schematic diagram of the function of the internal pressure device of the present application.

[0044] Fig.28 It is a top view of the external pressure device and the internal pressure device of the present application acting on the battery top cover assembly.

[0045] Fig.29 yes Fig.28 AA cross section in.

[0046] Fig.30 yes Fig.29 Enlarged view of point D in .

[0047] Fig.31 It is a side view of a battery cell of the present application.

[0048] Fig.32 yes Fig.31 AA cross section in.

[0049] In the figure: 1-battery top cover assembly; 2-shell; 3-electrode assembly; 10-top cover plate; 11-pole; 12-insulating member; 13-sealing member; 14-explosion-proof valve; 100-mounting hole; 101-first clamping structure; 102-connecting ring; 103-protective sheet; 104-groove; 110-second clamping structure; 111-support ring; 112-accommodating groove; 121-support part; 131-horizontal part; 1011-first indentation protrusion; 1012-first inner Side; 1013-first outer side; 1101-second indentation protrusion; 1102-second outer side; 1103-second inner side; 20-external pressure device; 201-external pressure shell; 202-external pressure teeth; 2011-outer side wall; 2012-middle side wall; 2013-inner side wall; 2014-first cavity; 2015-first through hole; 2016-second through hole; 2021-first pressure teeth; 2022-first connecting rod; 2023-first pressure monitoring device. 30-internal pressure device; 301-internal pressure shell; 302-internal pressure teeth; 3011-outer shell; 3012-inner shell; 3013-second cavity; 3014-fourth through hole; 3015-third through hole; 3021-second pressure teeth; 3022-second connecting rod; 3023-second pressure monitoring device. DETAILED DESCRIPTION

[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0051] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0052] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0054] In the related art, the battery top cover assembly includes a top cover plate, which has a through hole, and the pole is installed in the through hole. During assembly, after the pole passes through the through hole, it is fixed by riveting or overmolding, which results in complicated assembly process, high energy consumption, high cost, and easy generation of metal chips during welding, thus affecting the safety and reliability of the battery.

[0055] In view of the above technical problems, in order to solve the technical problem of complex assembly process of battery top cover assembly in the prior art. The present application provides a battery top cover assembly, including: a top cover plate, a pole and a seal, the top cover plate is provided with a mounting hole, a first clamping structure is provided on the outer side of the top cover plate and around the edge of the mounting hole, and the pole is installed in the mounting hole; the seal is provided between the side wall of the pole and the hole wall of the mounting hole, the outer side of the seal is in contact with the inner side of the first clamping structure, the first clamping structure has a first indentation protrusion deformed toward the seal, and the first indentation protrusion is used to clamp and fix the pole on the outer side of the seal toward the pole.

[0056] In the technical solution of the embodiment of the present application, a first clamping structure is arranged on the outer side surface of the top cover plate around the edge of the mounting hole, and the inner side surface of the first clamping structure and the outer side surface of the seal are attached to make the first clamping structure deform toward the seal and the pole to form a first indentation protrusion, and then the seal is compressed and fixed to the pole by the first indentation protrusion. The battery top cover assembly of the present application reduces the complexity of the assembly process during assembly, and the assembly does not require welding or injection molding processes, which reduces energy consumption. There is no metal chips generated that will not affect the battery performance, and rapid mass production can be achieved, reducing production costs.

[0057] The technical solution of the present application is described in detail below in conjunction with the accompanying drawings.

[0058] Please also read Figures 1 to 12 The embodiment of the present application provides a battery top cover assembly, including: a top cover plate 10, a pole 11 and a sealing member 13. The top cover plate 10 is provided with a mounting hole 100, and a first clamping structure 101 is provided on the outer side surface of the top cover plate 10 and around the edge of the mounting hole 100; the pole 11 is installed in the mounting hole 100; the sealing member 13 is provided between the side wall of the pole 11 and the hole wall of the mounting hole 100, the outer side surface of the sealing member 13 is in contact with the inner side surface of the first clamping structure 101, and the first clamping structure 101 has a first indentation protrusion 1011 deformed toward the sealing member 13, and the first indentation protrusion 1011 is used to clamp and fix the pole 11 on the outer side surface of the sealing member 13 toward the pole 11.

[0059] Among them, the top cover plate 10 can be the outermost structural member constituting the top cover assembly. The top cover plate 10 can be a metal plate, such as a plain aluminum plate. The mounting hole 100 is a through hole structure that passes through the top cover plate 10. The first clamping structure 101 is an annular structure surrounding the edge of the mounting hole 100. The seal 13 can be a sealing ring. The seal 13 is installed between the outer side wall of the pole 11 and the hole wall of the mounting hole 100, the inner side surface of the seal 13 is close to the outer side surface of the pole 11, and the outer side surface of the seal 13 is close to the inner side surface of the first clamping structure 101. The first indentation protrusion 1011 is a bite mark structure formed by the deformation of the first clamping structure 101 toward the seal 13 and the pole 11.

[0060] In the technical solution of the embodiment of the present application, a first clamping structure 101 is arranged on the outer side surface of the top cover plate 10 around the edge of the mounting hole 100, and the inner side surface of the first clamping structure 101 and the outer side surface of the seal 13 are attached to each other so that the first clamping structure 101 is deformed toward the seal 13 and the pole 11 to form a first indentation protrusion 1011, and then the seal 13 is compressed by the first indentation protrusion 1011 so that the seal 13 has a compression deformation, thereby clamping and fixing the pole 11. The battery top cover assembly of the present application reduces the complexity of the assembly process during assembly, and the assembly does not require welding or injection molding processes, which can reduce energy consumption. There is no metal shavings generated that will not affect the battery performance, and rapid mass production can be achieved, reducing production costs.

[0061] In some embodiments, the first indentation protrusion 1011 may be an arc-shaped or annular bite structure extending circumferentially along the outer circumference of the first clamping structure 101. The number of the first indentation protrusion 1011 may be one or more. When the number is one, the first indentation protrusion 1011 may be an annular bite around the entire outer circumference of the first clamping structure 101. When the number is multiple, it may be a plurality of annular bites arranged up and down along the axial direction of the mounting hole 100, or it may be a plurality of spaced arc-shaped bites around the entire outer circumference of the first clamping structure 101, or both, as long as it is ensured that the first indentation protrusion 1011 can compress and fix the seal 13 and the pole 11.

[0062] In some embodiments, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The first pressing structure 101 is an integral structure with the top cover plate 10, and the first pressing structure 101 is an annular structure protruding from the edge of the mounting hole 100 in a direction away from the top cover plate 10. The first pressing structure 101 has a first inner side surface 1012 that fits the sealing member 13 and a first outer side surface 1013 that is away from the sealing member 13, wherein the first indentation protrusion 1011 is deformed by applying pressure from the first outer side surface 1013 to the first inner side surface 1012.

[0063] It is understandable that the first clamping structure 101 can be a flange structure formed by stamping the top cover plate 10. The thickness of the first clamping structure 101 must be ensured so that it can be deformed under pressure. The first indentation protrusion 1011 is formed by the first outer side surface 1013 of the first clamping structure 101 applying pressure to the first inner side surface 1012 to deform and clamp and fix the pole 11.

[0064] In the technical solution of the embodiment of the present application, through the above arrangement, the first outer side surface 1013 of the first clamping structure 101 can be pressed to deform the first outer side surface 1013 toward the first inner side surface 1012 to form a first indentation protrusion 1011, and the first indentation protrusion 1011 can press the seal 13 to deform the seal 13, thereby achieving compression and fixing of the pole 11. The assembly process is simplified, no welding or injection molding process is required, energy consumption can be reduced, and no metal chips are generated during assembly, which will not affect the battery performance.

[0065] In some embodiments, please refer to Figure 8 , Fig. 9 and Fig.10 The first clamping structure 101 and the top cover plate 10 are split structures. A connecting ring 102 extends from the end of the first clamping structure 101. The connecting ring 102 extends in a direction away from the central axis of the mounting hole 100. The connecting ring 102 is connected to the top cover plate 10. The first clamping structure 101 is an annular structure that protrudes from the edge of the mounting hole 100 in a direction away from the top cover plate 10. The first clamping structure 101 has a first inner side surface 1012 that fits the seal 13 and a first outer side surface 1013 away from the seal 13, wherein the first indentation protrusion 1011 is formed by applying pressure and deformation from the first outer side surface 1013 to the first inner side surface 1012.

[0066] When the first clamping structure 101 and the top cover plate 10 are separate structures, the first clamping structure 101 can be a separate structural member. The first clamping structure 101 and the connecting ring 102 are an integrated structure. The first clamping structure 101 and the connecting ring 102 form a welding ring for welding with the top cover plate 10 to facilitate assembly. During assembly, the first clamping structure 101 and the connecting ring 102 can be pre-pressed into a module with the seal 13 and the pole 11. The separate production of the module can achieve mass production. Fig.10 As shown, the connecting ring 102 is then welded to the top cover plate 10. In some embodiments, referring to Fig.10 A groove 104 is provided at the edge of the mounting hole 100 of the top cover plate 10 , and the groove 104 is used to accommodate the connecting ring 102 and form a welding with the connecting ring 102 .

[0067] In some embodiments, please refer to Figure 5 , Figure 7 , Fig. 9 and Fig.11 The pole 11 forms a receiving groove 112 on a side facing the inside of the battery, the notch of the receiving groove 112 faces the inside of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100 .

[0068] In the technical solution of the application embodiment, through the above-mentioned setting, a receiving groove 112 is formed on the side of the pole 11 facing the inside of the battery, and the receiving groove 112 can be used to accommodate the pole ear of the electrode assembly to improve space utilization and improve the energy density of the battery.

[0069] In some embodiments, please refer to Figure 5 , Figure 7 and Fig. 9 The pole 11 is formed with a second clamping structure 110 on the side facing the inside of the battery, and the second clamping structure 110 is the side wall of the receiving groove 112. The side of the second clamping structure 110 is in contact with the inner side of the seal 13, and the second clamping structure 110 has a second indentation protrusion 1101 deformed toward the seal 13, and the second indentation protrusion 1101 is used to clamp and fix the pole 11 toward the seal 13 on the inner side wall of the receiving groove 112; the second clamping structure 110 has a second outer side 1102 in contact with the seal 13 and a second inner side 1103 away from the seal 13, and the second indentation protrusion 1101 is deformed by applying pressure from the second inner side 1103 to the second outer side 1102.

[0070] The receiving groove 112 may be formed by being concave from the side of the pole 11 toward the inside of the battery, and the receiving groove 112 may be formed by stamping and turning the pole 11. The wall thickness of the receiving groove 112 must be ensured so that it can be deformed under pressure.

[0071] In the technical solution of the embodiment of the present application, a second clamping structure 110 is formed by forming the groove wall of the accommodating groove 112 of the pole 11, and the second inner side surface 1103 of the second clamping structure 110 is pressed and deformed to form a second indentation protrusion 1101, and then the second indentation protrusion 1101 is used to pressurize the seal 13 toward the seal 13 so that the seal 13 is deformed, thereby sealing the inner side of the pole 11.

[0072] In some embodiments, the second indentation protrusion 1101 may be an arc-shaped or annular bite structure extending circumferentially along the inner circumference of the second clamping structure 110. The number of the second indentation protrusion 1101 may be one or more. When the number is one, the second indentation protrusion 1101 may be an annular bite around the entire inner circumference of the second clamping structure 110. When the number is multiple, it may be multiple annular bites arranged vertically along the axial direction of the pole 11, or it may be multiple spaced arc-shaped bites around the entire inner circumference of the second clamping structure 110, or it may be both.

[0073] In some embodiments, please refer to Figure 5A support ring 111 extends from the end of the second clamping structure 110 away from the bottom of the accommodating groove 112, and the support ring 111 extends from the connection with the second clamping structure 110 in a direction away from the central axis of the pole 11. The seal 13 also includes a horizontal portion 131, which is sealed between the support ring 111 and the top cover plate 10.

[0074] The support ring 111 may be a structural member of the slot wall of the receiving slot 112 of the pole 11 extending in the central axial direction away from the pole 11. The support ring 111 may be an integral structure with the slot wall of the receiving slot 112. The support ring 111 may be formed by stamping and turning the pole 11. The horizontal portion 131 of the seal 13 is sealed between the support ring 111 and the top cover plate 10.

[0075] In the technical solution of the embodiment of the present application, through the above-mentioned arrangement, the sealing member 13 can be compressed and deformed in both the horizontal and vertical directions, thereby achieving a better sealing effect.

[0076] In some embodiments, reference Fig.11 and Fig.12 The receiving groove 112 is defined by the bottom of the pole 11 and the insulating member 12, that is, the bottom of the pole 11 is located in the mounting hole 100, and the insulating member 12 is extended toward the pole 11, so as to define the receiving groove 112 between the bottom of the pole 11 and the insulating member 12. In this embodiment, the first indentation protrusion 1011 can be formed only on the first pressing structure 101.

[0077] In some embodiments, the thickness of the first pressing structure 101 is 0.5-1.5 mm, so that the first pressing structure 101 forms a thin-walled structure, and it is convenient to apply pressure to the first pressing structure 101 to form the first indentation protrusion 1011 .

[0078] In some embodiments, the thickness of the second pressing structure 110 is 0.5-1.5 mm, so that the second pressing structure 110 forms a thin-walled structure, which facilitates applying pressure to the second pressing structure 110 to form the second indentation protrusion 1101 .

[0079] In some embodiments, please refer to Figure 2 The battery top cover assembly further includes an insulating member 12, which is disposed on the side of the top cover plate 10 facing the inside of the battery along the thickness direction. The insulating member 12 is provided with a through hole for allowing the pole 11 to pass through, and the pole 11 passes through the through hole of the insulating member 12 and the mounting hole of the top cover plate 10 in sequence for fixing. The insulating member 12 can achieve insulation between the pole 11 and the top cover plate 10.

[0080] In some embodiments, reference Figure 2The battery top cover assembly also includes an explosion-proof hole for installing an explosion-proof valve 14. The explosion-proof valve 14 is installed on the explosion-proof hole, and a protective sheet 103 is provided on the side of the explosion-proof valve 14 away from the battery. The protective sheet 103 covers the outer side of the explosion-proof valve 14 to protect the explosion-proof valve 14.

[0081] On the other hand, the present application also provides a processing device, please refer to Figures 13 to 18 , Figures 19 to 27 as well as Figures 28 to 30 , used for processing any of the battery top cover components mentioned above. The processing equipment includes an external pressure device 20, which is sleeved on the outside of the first clamping structure 101, and includes an external pressure shell 201 and an external pressure tooth 202 arranged on the external pressure shell 201. The external pressure shell 201 is provided with a first driving mechanism, which is used to drive the external pressure tooth 202 to move toward the first outer side surface 1013 of the first clamping structure 101 so that the external pressure tooth 202 applies pressure from the first outer side surface 1013 of the first clamping structure 101 to the first inner side surface 1012 to form a first indentation protrusion 1011, and presses and fixes the pole 11 on the outer side surface of the seal 13 toward the pole 11.

[0082] The first driving mechanism may be a hydraulic driving mechanism.

[0083] In the technical solution of the embodiment of the present application, the external pressure device 20 is sleeved on the outer side of the first clamping structure 101 of the battery top cover assembly, and the external pressure teeth 202 of the external pressure device 20 are pressed against the first outer side surface 1013 of the first clamping structure 101, and then the first driving mechanism drives the external pressure teeth 202 to move from the first outer side surface 1013 of the first clamping structure 101 to the first inner side surface 1012, so as to apply pressure to the first clamping structure 101 so that the first clamping structure 101 forms a first indentation protrusion 1011, and compress the sealing member 13 to form a seal. The external pressure device 20 can be used for more convenient processing.

[0084] In some embodiments, please refer to Fig.14 , Fig.15 and Fig.16 The external pressure housing 201 includes an outer wall 2011, a middle wall 2012 and an inner wall 2013 which are sequentially arranged from the outside to the inside, wherein a first cavity 2014 is formed between the outer wall 2011 and the middle wall 2012, the first driving mechanism is disposed in the first cavity 2014, and the bottoms of the middle wall 2012 and the inner wall 2013 are respectively provided with a first through hole 2015 and a second through hole 2016. The first through hole 2015 and the second through hole 2016 are used to allow the external pressure tooth 202 to pass through and move under the drive of the first driving mechanism.

[0085] Please refer to Fig.17The external pressure tooth 202 includes a first connecting rod 2022 and a first pressure tooth 2021. The first pressure tooth 2021 is connected to one end of the first connecting rod 2022. The first pressure tooth 2021 is arranged toward the first outer side surface 1013 of the first clamping structure 101. The first connecting rod 2022 passes through the second through hole 2016 and the first through hole 2015 in sequence and is placed in the first cavity 2014. The first driving mechanism drives the first connecting rod 2022 to move so that it drives the first pressure tooth 2021 to press against the first outer side surface 1013. A first pressure monitoring device 2023 is provided on the first connecting rod 2022.

[0086] The first pressing tooth 2021 has an arc-shaped structure consistent with the outer side of the first pressing structure 101 on the contact surface with the first pressing structure 101, so that the first pressing tooth 2021 can be closely pressed against the outer side of the first pressing structure 101. In some embodiments, the edge of the first pressing tooth 2021 is a blade-like structure, that is, the thickness of the first pressing tooth 2021 is set in a gradually decreasing manner toward its edge, so that when the first pressing tooth 2021 is pressed against the outer side of the first pressing structure 101, it is easier for the first pressing structure 101 to be pressed out of the bite mark to form the first indentation protrusion 1011. A plurality of first pressing teeth 2021 can be arranged in the circumferential direction, and more than one layer of first pressing teeth 2021 is arranged along the axial direction of the external pressure device 20, and a certain number of first pressing teeth 2021 are arranged according to the shape of the first indentation protrusion 1011 to be formed. In some embodiments, the first cavity 2014 contains hydraulic oil. The movement of the first connecting rod 2022 is controlled by hydraulic drive. The first pressure monitoring device 2023 may be a pressure sensor, which is used to monitor the abutting pressure of the first pressing tooth 2021 to prevent sealing failure caused by overpressure or underpressure.

[0087] In some embodiments, please refer to Figures 19 to 22 The processing equipment also includes an internal pressure device 30 , which is arranged on the inner side of the second clamping structure 110 .

[0088] The internal pressure device 30 includes an internal pressure shell 301 and an internal pressure tooth 302 arranged on the internal pressure shell 301. A second driving mechanism is provided in the internal pressure shell 301 to drive the internal pressure tooth 302 to move toward the second inner side surface 1103 of the second clamping structure 110 so that the internal pressure tooth 302 applies pressure from the second inner side surface 1103 of the second clamping structure 110 to the second outer side surface 1102 to form a second indentation protrusion 1101, and presses and fixes the pole 11 on the inner side surface of the pole 11 toward the seal 13.

[0089] The second driving mechanism may be a hydraulic driving mechanism.

[0090] In the technical solution of the embodiment of the present application, the internal pressure device 30 is arranged inside the second pressing structure 110, the internal pressure teeth 302 of the internal pressure device 30 abut against the second inner side surface 1103 of the second pressing structure 110, and then the second driving mechanism drives the internal pressure teeth 302 to move from the second inner side surface 1103 of the second pressing structure 110 to the second outer side surface 1102, so as to apply pressure to the second pressing structure 110 so that the second pressing structure 110 forms the second indentation protrusion 1101, and compresses the sealing member 13 to form a seal. The internal pressure device 30 can be used for more convenient processing.

[0091] In some embodiments, please refer to Fig. 22 and Fig.23 The internal pressure housing 301 includes an outer shell 3011 and an inner shell 3012, a second cavity 3013 is formed in the inner shell 3012, a second driving mechanism is disposed in the second cavity 3013, and a third through hole 3015 and a fourth through hole 3014 are respectively disposed on the top of the outer shell 3011 and the inner shell 3012. The third through hole 3015 and the fourth through hole 3014 are used to allow the internal pressure teeth 302 to pass through and move under the drive of the second driving mechanism.

[0092] Please refer to Fig.24 The inner pressure tooth 302 includes a second connecting rod 3022 and a second pressure tooth 3021. The second pressure tooth 3021 is connected to one end of the second connecting rod 3022. The second connecting rod 3022 passes through the third through hole 3015 and the fourth through hole 3014 in sequence and is placed in the second cavity 3013. The second driving mechanism drives the second connecting rod 3022 to move so that it drives the second pressure tooth 3021 to press against the second inner side surface 1103. A second pressure monitoring device 3023 is provided on the second connecting rod 3022.

[0093] The contact surface of the second pressing tooth 3021 with the second clamping structure 110 is in an arc-shaped structure consistent with the inner side surface of the second clamping structure 110, so that the second pressing tooth 3021 can be tightly pressed against the inner side surface of the second clamping structure 110. In some embodiments, the edge of the second pressing tooth 3021 is in a blade-like structure, that is, the thickness of the second pressing tooth 3021 is gradually reduced toward its edge, so that when the second pressing tooth 3021 is pressed against the inner side surface of the second clamping structure 110, it is easier for the second clamping structure 110 to be pressed out of the groove to form the second indentation protrusion 1101. A plurality of second pressing teeth 3021 can be provided in the circumferential direction, and more than one layer of second pressing teeth 3021 can be provided along the axial direction of the internal pressure device 30, for example, Fig. 22The two layers shown in the figure are provided with a certain number of second pressing teeth 3021 according to the shape of the second indentation protrusion 1101 to be formed. In some embodiments, hydraulic oil is provided in the second cavity 3013. The movement of the second connecting rod 3022 is controlled by hydraulic drive. The second pressure monitoring device 3023 can be a pressure sensor, which monitors the abutting pressure of the second pressing teeth 3021 through the second pressure monitoring device 3023 to prevent overpressure or underpressure from causing sealing failure.

[0094] The processing equipment of the embodiment of the present application may have both the external pressure device 20 and the internal pressure device 30, or may have only one of them.

[0095] On the other hand, the present application provides a battery casing, comprising: a shell, a pole 11 and a seal 13, a mounting hole 100 is provided on the wall of the shell, and a first clamping structure 101 is provided on the outer side surface of the shell 2 and around the edge of the mounting hole 100; the pole 11 is installed in the mounting hole 100; the seal 13 is arranged between the side wall of the pole 11 and the hole wall of the mounting hole 100, the outer side surface of the seal 13 is in contact with the inner side surface of the first clamping structure 101, and the first clamping structure 101 has a first indentation protrusion 1011 deformed toward the seal 13, and the first indentation protrusion 1011 is used to press and fix the pole 11 on the outer side surface of the seal 13 toward the pole 11.

[0096] In the battery housing of other embodiments, the pole 11 forms a receiving groove 112 on the side facing the inside of the battery, the notch of the receiving groove 112 faces the inside of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The pole 11 is formed with a second clamping structure 110 on the side facing the inside of the battery, and the second clamping structure 110 is the side wall of the receiving groove 112. The side of the second clamping structure 110 fits with the inner side of the seal 13, and the second clamping structure 110 has a second indentation protrusion 1101 deformed toward the seal 13, and the second indentation protrusion 1101 is used to clamp and fix the pole 11 on the inner side wall of the receiving groove 112 toward the seal 13; the second clamping structure 110 has a second outer side surface 1102 that fits the seal 13 and a second inner side surface 1103 away from the seal 13, and the second indentation protrusion 1101 is deformed by applying pressure from the second inner side surface 1103 to the second outer side surface 1102.

[0097] Among them, the shell can be the shell of a cylindrical battery. The pole 11 is arranged on a wall of the shell, for example, it can be a top wall, a bottom wall or a side wall. The sealing method of the pole 11 and the shell can adopt the same sealing method as any of the top cover plates 10 mentioned above. In some embodiments, the shell of the cylindrical battery is an integrated structure, and the pole 11 can be arranged on the bottom wall or the top wall of the shell. In some embodiments, the shell of the cylindrical battery includes a cylindrical main shell and a top cover plate 10, the top cover plate 10 is arranged at one end of the main shell in the axial direction, and the pole 11 is provided on the top cover plate 10, and the sealing method of the top cover plate 10 and the pole 11 can adopt any of the same sealing methods mentioned above.

[0098] On the other hand, the present application also provides a battery cell, such as Fig.31 and Fig.32 As shown, the battery cell includes the battery top cover assembly 1, the shell 2 and the electrode assembly 3, wherein one end of the shell 2 has an opening, the electrode assembly 3 is placed into the shell 2 from the opening, and the battery top cover assembly 1 is covered on the opening of the shell 2.

[0099] In some embodiments, the battery cell includes the aforementioned battery housing. The battery cell may be a cylindrical battery cell.

[0100] The specific embodiments of the battery top cover assembly of the present application are described below by way of example.

[0101] Example 1 Please refer to Figure 3 , Figure 4 and Figure 5 A battery top cover assembly provided in this embodiment includes a top cover plate 10, a pole 11, an insulating member 12 and a sealing member 13. The top cover plate 10 is provided with a mounting hole 100, and a first clamping structure 101 is provided on the outer side surface of the top cover plate 10 and around the edge of the mounting hole 100; the first clamping structure 101 and the top cover plate 10 are an integrated structure, and the first clamping structure 101 is an annular structure protruding from the edge of the mounting hole 100 in a direction away from the top cover plate 10. The pole 11 is installed in the mounting hole 100; the seal 13 is arranged between the side wall of the pole 11 and the hole wall of the mounting hole 100, the outer side of the seal 13 is in contact with the inner side of the first clamping structure 101, the first clamping structure 101 has a first inner side 1012 in contact with the seal 13 and a first outer side 1013 away from the seal 13, the first clamping structure 101 has a first indentation protrusion 1011 deformed toward the seal 13, and the first indentation protrusion 1011 is deformed by applying pressure from the first outer side 1013 to the first inner side 1012. The first indentation protrusion 1011 is used to press and fix the pole 11 on the outer side of the seal 13 toward the pole 11. The first indentation protrusion 1011 can be a circular bite mark around the entire outer circumference of the first clamping structure 101.

[0102] The pole 11 is formed with a receiving groove 112 on the side facing the inside of the battery, the notch of the receiving groove 112 faces the inside of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The pole 11 is formed with a second clamping structure 110 on the side facing the inside of the battery, and the second clamping structure 110 is the side wall of the receiving groove 112. The side of the second clamping structure 110 is in contact with the inner side of the seal 13, and the second clamping structure 110 has a second outer side 1102 in contact with the seal 13 and a second inner side 1103 away from the seal 13. The second clamping structure 110 has a second indentation protrusion 1101 deformed toward the seal 13, and the second indentation protrusion 1101 is deformed by applying pressure from the second inner side 1103 to the second outer side 1102, and the second indentation protrusion 1101 is used to clamp and fix the pole 11 on the inner side wall of the receiving groove 112 toward the seal 13. The second indentation protrusion 1101 can be two annular bite marks arranged up and down along the axial direction of the mounting hole 100. A support ring 111 extends from the end of the second clamping structure 110 away from the bottom of the accommodating groove 112. The support ring 111 and the groove wall of the accommodating groove 112 are an integral structure. The support ring 111 extends from the connection with the accommodating groove 112 in a direction away from the central axis of the pole 11. The seal 13 also includes a horizontal portion 131, and the horizontal portion 131 is sealed between the support ring 111 and the top cover plate 10. The edge of the insulating member 12 is arranged between the top cover plate 10 and the support ring 111, and contacts the end of the horizontal portion 131 of the seal 13. The battery top cover assembly of this embodiment is provided with a support ring 111 with a flange structure at the bottom of the pole 11, which can compress the seal 13 in both the horizontal and longitudinal directions and has a better sealing effect.

[0103] Example 2 Please refer to Figure 6 and Figure 7A battery top cover assembly provided in this embodiment includes: a top cover plate 10, a pole 11, an insulating member 12 and a sealing member 13. The top cover plate 10 is provided with a mounting hole 100, and a first clamping structure 101 is provided on the outer side surface of the top cover plate 10 and around the edge of the mounting hole 100; the first clamping structure 101 and the top cover plate 10 are an integrated structure, and the first clamping structure 101 is an annular structure protruding from the edge of the mounting hole 100 in a direction away from the top cover plate 10. The pole 11 is installed in the mounting hole 100; the seal 13 is arranged between the side wall of the pole 11 and the hole wall of the mounting hole 100, the outer side of the seal 13 is in contact with the inner side of the first clamping structure 101, the first clamping structure 101 has a first inner side 1012 in contact with the seal 13 and a first outer side 1013 away from the seal 13, the first clamping structure 101 has a first indentation protrusion 1011 deformed toward the seal 13, and the first indentation protrusion 1011 is deformed by applying pressure from the first outer side 1013 to the first inner side 1012. The first indentation protrusion 1011 is used to press and fix the pole 11 on the outer side of the seal 13 toward the pole 11. The first indentation protrusion 1011 can be a circular bite mark around the entire outer circumference of the first clamping structure 101.

[0104] The pole 11 is formed with a receiving groove 112 on the side facing the inside of the battery, the notch of the receiving groove 112 faces the inside of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The pole 11 is formed with a second clamping structure 110 on the side facing the inside of the battery, and the second clamping structure 110 is the side wall of the receiving groove 112. The side of the second clamping structure 110 is in contact with the inner side of the seal 13, and the second clamping structure 110 has a second outer side 1102 in contact with the seal 13 and a second inner side 1103 away from the seal 13. The second clamping structure 110 has a second indentation protrusion 1101 deformed toward the seal 13, and the second indentation protrusion 1101 is deformed by applying pressure from the second inner side 1103 to the second outer side 1102. The second indentation protrusion 1101 is used to clamp and fix the pole 11 on the inner side wall of the receiving groove 112 toward the seal 13. The second indentation protrusion 1101 may be three annular bite marks arranged up and down along the axial direction of the mounting hole 100. The edge of the insulating member 12 abuts against the sealing member 13 to insulate the pole 11 and the top cover plate 10. The battery top cover assembly of this embodiment does not have a flange structure at the bottom of the pole 11, which can simplify the processing of the pole.

[0105] Example 3 Please refer to Figure 8 , Fig. 9 and Fig.10A battery top cover assembly provided in this embodiment includes: a top cover plate 10, a pole 11, an insulating member 12 and a sealing member 13. The top cover plate 10 is provided with a mounting hole 100, and a first clamping structure 101 is provided on the outer side surface of the top cover plate 10 and around the edge of the mounting hole 100; the first clamping structure 101 and the top cover plate 10 are a split structure, a connecting ring 102 extends from the end of the first clamping structure 101, and the connecting ring 102 extends in a direction away from the central axis of the mounting hole 100. The first clamping structure 101 and the connecting ring 102 are an integrated structure, and the first clamping structure 101 and the connecting ring 102 form a welding ring. The first clamping structure 101 is an annular structure protruding from the edge of the mounting hole 100 in a direction away from the top cover plate 10, and the pole 11 is installed in the mounting hole 100; the sealing member 13 is arranged between the side wall of the pole 11 and the hole wall of the mounting hole 100, and the outer side surface of the sealing member 13 is in contact with the inner side surface of the first clamping structure 101, and the first clamping structure 101 has a first inner side surface 1012 in contact with the sealing member 13 and a first outer side surface 1013 away from the sealing member 13, and the first clamping structure 101 has a first indentation protrusion 1011 deformed toward the sealing member 13, wherein the first indentation protrusion 1011 is deformed by applying pressure from the first outer side surface 1013 to the first inner side surface 1012. The first indentation protrusion 1011 is used to press and fix the pole 11 on the outer side surface of the sealing member 13 toward the pole 11. The first indentation protrusion 1011 may be a circular bite mark surrounding the entire outer circumference of the first clamping structure 101 for two circles.

[0106] During assembly, the first clamping structure 101 and the connecting ring 102 can be pre-pressed together with the seal 13 and the pole 11 to form a module. The modules can be produced separately to achieve batch production. Fig.10 As shown, the connecting ring 102 is then welded to the top cover plate 10. A groove 104 is provided at the edge of the mounting hole 100 of the top cover plate 10, and the groove 104 is used to accommodate the connecting ring 102 and is welded to the connecting ring 102.

[0107] The pole 11 is formed with a receiving groove 112 on the side facing the inside of the battery, the notch of the receiving groove 112 faces the inside of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The pole 11 is formed with a second clamping structure 110 on the side facing the inside of the battery, and the second clamping structure 110 is the side wall of the receiving groove 112. The side of the second clamping structure 110 is in contact with the inner side of the seal 13, and the second clamping structure 110 has a second outer side 1102 in contact with the seal 13 and a second inner side 1103 away from the seal 13. The second clamping structure 110 has a second indentation protrusion 1101 deformed toward the seal 13, and the second indentation protrusion 1101 is deformed by applying pressure from the second inner side 1103 to the second outer side 1102. The second indentation protrusion 1101 is used to clamp and fix the pole 11 on the inner side wall of the receiving groove 112 toward the seal 13. The second indentation protrusion 1101 may be two annular bite marks arranged up and down along the axial direction of the mounting hole 100 .

[0108] The edge of the insulating member 12 is arranged at the bottom of the top cover plate 10, the sealing member 13 and the second clamping structure 110 of the pole 11, so as to insulate the pole 11 and the top cover plate 10. The battery top cover assembly of this embodiment can realize the individual batch production of modules.

[0109] Example 4 Please refer to Fig.11 and Fig.12A battery top cover assembly provided in this embodiment includes: a top cover plate 10, a pole 11, an insulating member 12 and a sealing member 13. The top cover plate 10 is provided with a mounting hole 100, and a first clamping structure 101 is provided on the outer side surface of the top cover plate 10 and around the edge of the mounting hole 100; the first clamping structure 101 and the top cover plate 10 are a split structure, a connecting ring 102 extends from the end of the first clamping structure 101, and the connecting ring 102 extends in a direction away from the central axis of the mounting hole 100. The first clamping structure 101 and the connecting ring 102 are an integrated structure, and the first clamping structure 101 and the connecting ring 102 form a welding ring. The first clamping structure 101 is an annular structure protruding from the edge of the mounting hole 100 in a direction away from the top cover plate 10, and the pole 11 is installed in the mounting hole 100; the sealing member 13 is arranged between the side wall of the pole 11 and the hole wall of the mounting hole 100, and the outer side surface of the sealing member 13 is in contact with the inner side surface of the first clamping structure 101, and the first clamping structure 101 has a first inner side surface 1012 in contact with the sealing member 13 and a first outer side surface 1013 away from the sealing member 13, and the first clamping structure 101 has a first indentation protrusion 1011 deformed toward the sealing member 13, wherein the first indentation protrusion 1011 is deformed by applying pressure from the first outer side surface 1013 to the first inner side surface 1012. The first indentation protrusion 1011 is used to press and fix the pole 11 on the outer side surface of the sealing member 13 toward the pole 11. The first indentation protrusion 1011 may be a circular bite mark surrounding the entire outer circumference of the first clamping structure 101 for two circles.

[0110] During assembly, the first clamping structure 101 and the connecting ring 102 can be pre-pressed together with the seal 13 and the pole 11 to form a module. The modules can be produced separately to achieve batch production. Fig.10 As shown, the connecting ring 102 is then welded to the top cover plate 10. A groove 104 is provided at the edge of the mounting hole 100 of the top cover plate 10, and the groove 104 is used to accommodate the connecting ring 102 and is welded to the connecting ring 102.

[0111] The pole 11 is installed in the mounting hole 100; the bottom of the pole 11 is located in the mounting hole 100. Among them, the receiving groove 112 is formed at the bottom of the pole 11, and the insulating member 12 has a supporting portion 121 extending toward the pole 11 at the position of the mounting hole 100, and the supporting portion 121 is supported at the bottom of the pole 11 so as to insulate the pole 11 and the top cover plate 10. At the same time, the receiving groove 112 is defined between the bottom of the pole 11 and the supporting portion 121 for accommodating the pole ear. The battery top cover assembly of this embodiment can make the processing of the pole simple and low-cost.

[0112] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A battery top cover assembly, characterized in that: include: A top cover plate (10) is provided with a mounting hole (100), and a first clamping structure (101) is provided on the outer side surface of the top cover plate (10) and around the edge of the mounting hole (100); A pole (11) mounted in the mounting hole (100); A sealing member (13) is disposed between a side wall of the pole (11) and a hole wall of the mounting hole (100); an outer side surface of the sealing member (13) is in contact with an inner side surface of the first pressing structure (101); the first pressing structure (101) has a first indentation protrusion (1011) deformed toward the sealing member (13); the first indentation protrusion (1011) is used to press the pole (11) toward the pole (11) on the outer side surface of the sealing member (13) and fix the pole (11).

2. The battery top cover assembly according to claim 1, characterized in that: The first clamping structure (101) and the top cover plate (10) are an integrated structure, and the first clamping structure (101) is an annular structure protruding from the edge of the mounting hole (100) in a direction away from the top cover plate (10). The first pressing structure (101) comprises a first inner side surface (1012) in contact with the sealing element (13) and a first outer side surface (1013) away from the sealing element (13), wherein the first indentation protrusion (1011) is deformed by applying pressure from the first outer side surface (1013) to the first inner side surface (1012); Alternatively, the first clamping structure (101) and the top cover plate (10) are split structures, a connecting ring (102) extends from the end of the first clamping structure (101), the connecting ring (102) extends in a direction away from the central axis of the mounting hole (100), the connecting ring (102) is connected to the top cover plate (10), the first clamping structure (101) is an annular structure protruding from the edge of the mounting hole (100) in a direction away from the top cover plate (10), the first clamping structure (101) has a first inner side surface (1012) in contact with the sealing element (13) and a first outer side surface (1013) away from the sealing element (13), wherein the first indentation protrusion (1011) is formed by applying pressure and deformation from the first outer side surface (1013) toward the first inner side surface (1012).

3. The battery top cover assembly according to claim 1 or 2, characterized in that: The pole (11) forms a receiving groove (112) on a side facing the inside of the battery, the notch of the receiving groove (112) faces the inside of the battery, and the bottom of the receiving groove (112) is located inside the mounting hole (100).

4. The battery top cover assembly according to claim 3, characterized in that: The pole (11) is formed with a second clamping structure (110) on the side facing the inside of the battery, the second clamping structure (110) being a side wall of the accommodation groove (112). The side surface of the second pressing structure (110) is in contact with the inner side surface of the sealing member (13); the second pressing structure (110) has a second indentation protrusion (1101) deformed toward the sealing member (13); the second indentation protrusion (1101) is used to press and fix the pole (11) toward the sealing member (13) on the inner side wall of the accommodating groove (112); The second pressing structure (110) comprises a second outer side surface (1102) in contact with the sealing member (13) and a second inner side surface (1103) away from the sealing member (13); the second indentation protrusion (1101) is deformed by applying pressure from the second inner side surface (1103) toward the second outer side surface (1102).

5. The battery top cover assembly according to claim 4, characterized in that: A support ring (111) extends from the end of the second clamping structure (110) away from the bottom of the accommodating groove (112); the support ring (111) extends from the connection with the second clamping structure (110) in a direction away from the central axis of the pole (11); the sealing member (13) further comprises a horizontal portion (131); the horizontal portion (131) is sealingly arranged between the support ring (111) and the top cover plate (10).

6. The battery top cover assembly according to claim 4, characterized in that: The thickness of the first pressing structure (101) is 0.5-1.5 mm; And / or, the thickness of the second pressing structure (110) is 0.5-1.5 mm.

7. A processing equipment, characterized in that: Used for processing the battery top cover assembly according to any one of claims 1 to 6, the processing equipment comprising: an external pressure device (20), the external pressure device (20) being sleeved on the outside of the first clamping structure (101), The external pressure device (20) comprises an external pressure shell (201) and an external pressure tooth (202) arranged on the external pressure shell (201), wherein a first driving mechanism is arranged in the external pressure shell (201) for driving the external pressure tooth (202) to move toward a first outer side surface (1013) of a first clamping structure (101) so that the external pressure tooth (202) applies pressure from the first outer side surface (1013) of the first clamping structure (101) to a first inner side surface (1012) to form a first indentation protrusion (1011), and presses the outer side surface of the sealing member (13) toward the pole (11) to fix the pole (11), and / or, The processing equipment further comprises: an internal pressure device (30), wherein the internal pressure device (30) is arranged on the inner side of the second pressing structure (110), The internal pressure device (30) comprises an internal pressure shell (301) and an internal pressure tooth (302) arranged on the internal pressure shell (301), wherein a second driving mechanism is arranged in the internal pressure shell (301) for driving the internal pressure tooth (302) to move toward a second inner side surface (1103) of the second clamping structure (110) so that the internal pressure tooth (302) applies pressure from the second inner side surface (1103) of the second clamping structure (110) toward a second outer side surface (1102) to form a second indentation protrusion (1101), and presses and fixes the pole (11) on the inner side surface of the pole (11) toward the sealing member (13).

8. The processing equipment according to claim 7, characterized in that: The external pressure shell (201) comprises an outer wall (2011), a middle wall (2012) and an inner wall (2013) which are arranged in sequence from the outside to the inside, wherein a first cavity (2014) is formed between the outer wall (2011) and the middle wall (2012), the first driving mechanism is disposed in the first cavity (2014), the bottoms of the middle wall (2012) and the inner wall (2013) are respectively provided with a first through hole (2015) and a second through hole (2016), the external pressure tooth (202) comprises a first connecting rod (2022) and a first pressure tooth (2021), the first pressure tooth (2021) 021) is connected to one end of the first connecting rod (2022), the first pressing tooth (2021) is arranged toward the first outer side surface (1013) of the first clamping structure (101), the first connecting rod (2022) passes through the second through hole (2016) and the first through hole (2015) in sequence and is placed in the first cavity (2014), and the first driving mechanism drives the first connecting rod (2022) to move so that it drives the first pressing tooth (2021) to abut against the first outer side surface (1013), and a first pressure monitoring device (2023) is provided on the first connecting rod (2022); and / or, The internal pressure housing (301) comprises an outer shell (3011) and an inner shell (3012), a second cavity (3013) is formed in the inner shell (3012), the second driving mechanism is disposed in the second cavity (3013), a third through hole (3015) and a fourth through hole (3014) are respectively provided on the top of the outer shell (3011) and the inner shell (3012), the internal pressure tooth (302) comprises a second connecting rod (3022) and a second pressure tooth (3021), the second pressure tooth ( The second connecting rod (3021) is connected to one end of the second connecting rod (3022), the second connecting rod (3022) passes through the third through hole (3015) and the fourth through hole (3014) in sequence and is placed in the second cavity (3013), and the second driving mechanism drives the second connecting rod (3022) to move so that it drives the second pressing tooth (3021) to abut against the second inner side surface (1103), and a second pressure monitoring device (3023) is provided on the second connecting rod (3022).

9. A battery casing, characterized in that: include: A shell, a mounting hole (100) being provided on a wall of the shell, and a first clamping structure (101) being provided on an outer side surface of the shell (2) and around an edge of the mounting hole (100); A pole (11) mounted in the mounting hole (100); A sealing member (13) is disposed between a side wall of the pole (11) and a hole wall of the mounting hole (100); an outer side surface of the sealing member (13) is in contact with an inner side surface of the first pressing structure (101); the first pressing structure (101) has a first indentation protrusion (1011) deformed toward the sealing member (13); the first indentation protrusion (1011) is used to press the pole (11) toward the pole (11) on the outer side surface of the sealing member (13) and fix the pole (11).

10. A battery cell, characterized in that: include: The battery top cover assembly according to any one of claims 1 to 6 or the battery casing according to claim 9.

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