Battery top cover components and processing equipment, battery casings and battery cells

Abstract

The present application provides a battery top cover assembly and processing equipment, a battery shell and a battery cell, and relates to the field of battery technology. The battery top cover assembly of the present application includes 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. 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 fits with the inner side of the first clamping structure. The first clamping structure has a first indentation protrusion that deforms toward the seal. The first indentation protrusion is used to press and fix the pole toward the pole on the outer side of the seal. The pole is compressed and fixed by compressing the seal with the first indentation protrusion, which reduces the complexity of the assembly process during assembly. No welding or injection molding process is required, which can reduce energy consumption. No metal chips are generated and will not affect the battery performance. Rapid batch production can be achieved, reducing production costs.

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 cell. Background Art

[0002] New energy vehicles can reduce exhaust emissions and benefit environmental protection, but at the same time they also put forward higher requirements for 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, secondary battery casings generally employ a square, hard-shell structure. The casing comprises a housing and a top cover assembly, with the electrical energy from the electrode assembly being drawn from within the assembly via the electrode posts. However, the top cover assembly is typically constructed of a metal plate with through-holes. During assembly, the electrode posts are inserted through the through-holes and then secured by riveting or overmolding. This complex assembly process results in low assembly efficiency and high costs. Summary of the Invention

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

[0005] To achieve the above objectives, the technical solution adopted in this application is:

[0006] In the first aspect, the present application provides a battery top cover assembly, comprising: a top cover plate, a pole and a seal, the top cover plate being provided with a mounting hole, and a first clamping structure being 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 having a first indentation protrusion deformed toward the seal, the first indentation protrusion being used to press and fix the pole toward the pole on the outer side surface of the seal.

[0007] 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 applying pressure and 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 applying pressure and deformation from the first outer side surface to the first inner side surface.

[0008] In one or more embodiments of the present application, a receiving groove is formed on the 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.

[0009] 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 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.

[0010] 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. The seal also includes a horizontal portion, and the horizontal portion seal is arranged between the support ring and the top cover plate.

[0011] 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.

[0012] 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 aspects, the processing equipment including: an external pressure device, the external pressure device is sleeved on the outside of the first clamping structure, the external pressure device includes an external pressure shell and external pressure teeth provided on the external pressure shell, a first driving mechanism is provided in the external pressure shell, for driving the external pressure teeth to move toward the first outer side surface of the first clamping structure so that the external pressure teeth apply 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 press and fix the pole on the outer side surface of the seal toward the pole, and / or, the processing equipment also includes: an internal pressure device, the internal pressure device is provided on the inner side of the second clamping structure, the internal pressure device includes an internal pressure shell and internal pressure teeth provided on the internal pressure shell, a second driving mechanism is provided in the internal pressure shell, for driving the internal pressure teeth to move toward the second inner side surface of the second clamping structure so that the internal pressure teeth apply 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 press and fix the pole on the inner side surface of the pole toward the seal.

[0013] In one or more embodiments of the present application, the external pressure shell includes an outer wall, a middle side wall and an inner side wall arranged in sequence from the outside to the inside, wherein a first cavity is formed between the outer wall and the middle side wall, a first driving mechanism is placed in the first cavity, and a first through hole and a second through hole are provided at the bottom of the middle side wall and the inner side wall respectively, 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 rests on 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, and 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 rest on the second inner side surface, and a second pressure monitoring device is provided on the second connecting rod.

[0014] On the third aspect, the present application also provides a battery casing, comprising: a shell, a pole and a seal, a mounting hole being provided on the wall of the shell, and a first clamping structure being 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.

[0015] 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.

[0016] Based on the above technical solution, the battery top cover assembly and processing equipment, battery housing and battery cells provided in this application have at least the following beneficial technical effects:

[0017] The battery top cover assembly provided by the present application is provided with a first compression structure on the outer side of the top cover plate around the edge of the mounting hole. The inner side of the first compression structure and the outer side of the seal are in contact with each other, causing the first compression structure to deform toward the seal and the pole to form a first indentation protrusion. The first indentation protrusion then compresses the seal to press and secure the pole. The battery top cover assembly provided by the present application reduces the complexity of the assembly process during assembly. The assembly does not require welding or injection molding processes, which reduces energy consumption. No metal chips are generated, which will not affect battery performance. This allows for rapid batch production and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. 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 any creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the battery top cover assembly of the present application.

[0020] Figure 2 It is a schematic diagram of the exploded structure of the battery top cover assembly of the present application.

[0021] Figure 3 It is a side view of a battery top cover assembly according to an embodiment of the present application.

[0022] Figure 4 yes Figure 3 BB cross-section diagram in.

[0023] Figure 5 yes Figure 4 A in the enlarged view.

[0024] Figure 6 It is a cross-sectional view of a battery top cover assembly according to another embodiment of the present application.

[0025] Figure 7 yes Figure 6 Enlarged view of point B in .

[0026] Figure 8It is a cross-sectional view of a battery top cover assembly according to another embodiment of the present application.

[0027] Figure 9 yes Figure 8 Enlarged view of point C in the figure.

[0028] Figure 10 yes Figure 9 Schematic diagram of the explosion structure.

[0029] Figure 11 This 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.

[0030] Figure 12 yes Figure 11 Schematic diagram of the explosion structure.

[0031] Figure 13 It is a schematic diagram of the three-dimensional structure of the external pressure device of the present application.

[0032] Figure 14 It is a schematic diagram of the three-dimensional structure of the external pressure device of the present application from another perspective.

[0033] Figure 15 It is a bottom view of the external pressure device of the present application.

[0034] Figure 16 yes Figure 15 EE cross-section diagram in.

[0035] Figure 17 It is a structural schematic diagram of the external pressure teeth in the external pressure device of the present application.

[0036] Figure 18 This is a schematic diagram of the function of the external pressure teeth in the external pressure device of the present application.

[0037] Figure 19 It is a schematic diagram of the three-dimensional structure of the internal pressure device of the present application.

[0038] Figure 20 This is a schematic diagram of the three-dimensional structure of the internal pressure device of the present application from another perspective.

[0039] Figure 21 It is a bottom view of the internal pressure device of the present application.

[0040] Figure 22 yes Figure 21 BB cross-section diagram in.

[0041] Figure 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.

[0042] Figure 24 It is a structural schematic diagram of the internal pressure teeth in the internal pressure device of the present application.

[0043] Figure 25 It is a bottom view of the internal pressure shell in the internal pressure device of the present application.

[0044] Figure 26 yes Figure 25 Middle CC cross-section.

[0045] Figure 27 It is a schematic diagram of the function of the internal pressure device of the present application.

[0046] Figure 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.

[0047] Figure 29 yes Figure 28 AA cross-section diagram in.

[0048] Figure 30 yes Figure 29 Enlarged view of point D in .

[0049] Figure 31 It is a side view of the battery cell of the present application.

[0050] Figure 32 yes Figure 31 AA cross-section diagram in.

[0051] In the figure: 1-battery top cover assembly; 2-housing; 3-electrode assembly; 10-top cover plate; 11-electrode column; 12-insulating member; 13-sealing member; 14-explosion-proof valve; 100-mounting hole; 101-first pressing structure; 102-connecting ring; 103-protective sheet; 104-groove; 110-second pressing structure; 111-support ring; 112-accommodating groove; 121-support portion; 131-horizontal portion; 1011-first indentation protrusion; 1012-first inner Side surface; 1013-first outer side surface; 1101-second indentation protrusion; 1102-second outer side surface; 1103-second inner side surface; 20-external pressure device; 201-external pressure housing; 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 housing; 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

[0052] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0053] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may 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 may be directly connected to the other element or indirectly connected to the other element.

[0054] 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 accompanying drawings, and are only for the convenience of describing this 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 cannot be understood as a limitation on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0056] 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, resulting in a complicated assembly process, high energy consumption, high cost, and easy generation of metal chips during welding, which in turn affects the safety and reliability of the battery.

[0057] 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, comprising: a top cover plate, a pole and a seal, wherein 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.

[0058] 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 fitted together 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. There is no metal shavings generated, which will not affect the battery performance, and can achieve rapid batch production, reducing production costs.

[0059] The technical solution of this application is described in detail below with reference to the accompanying drawings.

[0060] Please also refer to Figures 1 to 12 , an embodiment of the present application provides a battery top cover assembly, including: a top cover plate 10, a pole 11 and a seal 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 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 seal 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 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.

[0061] 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 in close contact with the outer side surface of the pole 11, and the outer side surface of the seal 13 is in close contact with 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.

[0062] 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 adhered 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 pressing 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, which will not affect the battery performance, and can achieve rapid batch production, reducing production costs.

[0063] In some embodiments, the first indentation protrusion 1011 can 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 can be one or more. When the number is one, the first indentation protrusion 1011 can be an annular bite around the entire outer circumference of the first clamping structure 101. When the number is multiple, it can be a plurality of annular bites arranged up and down along the axial direction of the mounting hole 100, or it can 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.

[0064] In some embodiments, please refer to Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 The first pressing structure 101 is integral with the top cover plate 10 and is an annular structure that protrudes from the edge of the mounting hole 100 away from the top cover plate 10. The first pressing structure 101 has a first inner side surface 1012 that contacts the seal 13 and a first outer side surface 1013 that is away from the seal 13. 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.

[0065] It is understood that the first compression structure 101 can be a flanged structure formed by stamping the top cover plate 10. The thickness of the first compression structure 101 should be sufficient to allow it to deform under pressure. The first indentation protrusion 1011 is formed by the first outer side surface 1013 of the first compression structure 101 applying pressure to the first inner side surface 1012 to deform and compress the pole 11.

[0066] In the technical solution of the embodiment of the present application, the above arrangement allows pressure to be applied to the first outer side surface 1013 of the first compression structure 101, causing the first outer side surface 1013 to deform toward the first inner side surface 1012 to form a first indentation protrusion 1011. The first indentation protrusion 1011 applies pressure toward the seal 13, deforming the seal 13 and thereby compressing and securing the terminal 11. This simplifies the assembly process, eliminates the need for welding or injection molding, reduces energy consumption, and eliminates the generation of metal chips during assembly, thereby preventing the battery from experiencing any impact on performance.

[0067] In some embodiments, please refer to Figure 8 、 Figure 9 and Figure 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, and 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.

[0068] Among them, when the first clamping structure 101 and the top cover plate 10 are split 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 together with the seal 13 and the pole 11 into a module. The separate production of the module can achieve mass production. Figure 10 As shown, the connecting ring 102 is then welded to the top cover plate 10. In some embodiments, referring to Figure 10 A groove 104 is provided on the edge of the mounting hole 100 of the top cover plate 10 . The groove 104 is used to accommodate the connecting ring 102 and is welded to the connecting ring 102 .

[0069] In some embodiments, please refer to Figure 5 、 Figure 7 、 Figure 9 and Figure 11 The terminal 11 forms a receiving groove 112 on the side facing the interior of the battery. The notch of the receiving groove 112 faces the interior of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100.

[0070] 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 interior of the battery. The receiving groove 112 can be used to accommodate the pole ear of the electrode assembly to improve space utilization and increase the energy density of the battery.

[0071] In some embodiments, please refer to Figure 5 、 Figure 7 and Figure 9 The terminal 11 has a second compression structure 110 formed on the side facing the interior of the battery. The second compression structure 110 is the side wall of the receiving groove 112. The side of the second compression structure 110 is in contact with the inner side of the seal 13. The second compression structure 110 has a second indentation protrusion 1101 that deforms toward the seal 13. The second indentation protrusion 1101 is used to compress and fix the terminal 11 toward the seal 13 on the inner side wall of the receiving groove 112. The second compression structure 110 has a second outer side surface 1102 that is in contact with the seal 13 and a second inner side surface 1103 that is away from the seal 13. The second indentation protrusion 1101 is deformed by applying pressure from the second inner side surface 1103 to the second outer side surface 1102.

[0072] The accommodating groove 112 may be formed by a concave side of the pole 11 toward the inside of the battery. The accommodating groove 112 may be formed by stamping and turning the pole 11. The wall thickness of the accommodating groove 112 must be ensured so that it can be deformed under pressure.

[0073] 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.

[0074] In some embodiments, the second indentation protrusion 1101 can be an arc-shaped or annular bite structure extending circumferentially along the inner circumference of the second compression structure 110. The number of second indentation protrusions 1101 can be one or more. When there is one, the second indentation protrusion 1101 can be an annular bite structure surrounding the entire inner circumference of the second compression structure 110. When there are multiple second indentation protrusions 1101, they can be multiple annular bite structures arranged vertically along the axial direction of the pole 11, or multiple spaced arc-shaped bite structures surrounding the entire inner circumference of the second compression structure 110, or both.

[0075] 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. 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.

[0076] The support ring 111 can be a structural member extending from the wall of the receiving groove 112 of the pole 11 in a direction away from the central axis of the pole 11. The support ring 111 can be integrally formed with the wall of the receiving groove 112. It can be formed from the pole 11 by stamping and turning. The horizontal portion 131 of the seal 13 seals between the support ring 111 and the top cover plate 10.

[0077] In the technical solution of the embodiment of the present application, the above-mentioned arrangement allows the sealing member 13 to be compressively deformed in both the transverse and longitudinal directions, thereby achieving a better sealing effect.

[0078] In some embodiments, reference Figure 11 and Figure 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 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.

[0079] In some embodiments, the thickness of the first compression structure 101 is 0.5-1.5 mm, so that the first compression structure 101 forms a thin-walled structure, which facilitates applying pressure to the first compression structure 101 to form the first indentation protrusion 1011 .

[0080] In some embodiments, the thickness of the second compression structure 110 is 0.5-1.5 mm, so that the second compression structure 110 forms a thin-walled structure, which facilitates applying pressure to the second compression structure 110 to form the second indentation protrusion 1101 .

[0081] In some embodiments, please refer to Figure 2 The battery top cover assembly also includes an insulating member 12, which is disposed on the side of the top cover plate 10 facing the interior of the battery along the thickness direction. The insulating member 12 has a through hole for the terminal 11 to pass through. The terminal 11 is secured by passing through the through hole of the insulating member 12 and the mounting hole of the top cover plate 10 in sequence. The insulating member 12 insulates the terminal 11 from the top cover plate 10.

[0082] 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 outside of the explosion-proof valve 14 to protect the explosion-proof valve 14.

[0083] On the other hand, this 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 to process any of the aforementioned battery top cover assemblies. The processing equipment includes an external pressure device 20, which is sleeved on the outside of the first clamping structure 101. The external pressure device 20 includes an external pressure housing 201 and external pressure teeth 202 provided on the external pressure housing 201. The external pressure housing 201 is provided with a first driving mechanism for driving the external pressure teeth 202 to move toward the first outer side surface 1013 of the first clamping structure 101 so that the external pressure teeth 202 apply pressure from the first outer side surface 1013 to the first inner side surface 1012 of the first clamping structure 101 to form a first indentation protrusion 1011, and press the outer side surface of the seal 13 toward the terminal 11 to fix the terminal 11.

[0084] The first driving mechanism may be a hydraulic driving mechanism.

[0085] In the technical solution of the embodiment of the present application, the external pressure device 20 is sleeved on the outside of the first compression structure 101 of the battery top cover assembly, and the external pressure teeth 202 of the external pressure device 20 abut against the first outer side surface 1013 of the first compression structure 101. Then, the first driving mechanism drives the external pressure teeth 202 to move from the first outer side surface 1013 to the first inner side surface 1012 of the first compression structure 101, thereby applying pressure to the first compression structure 101 to form a first indentation protrusion 1011 on the first compression structure 101, thereby compressing the sealing member 13 to form a seal. The external pressure device 20 can facilitate processing.

[0086] In some embodiments, please refer to Figure 14 、 Figure 15 and Figure 16 The external pressure housing 201 includes an outer wall 2011, a middle wall 2012, and an inner wall 2013, arranged in order from the outside to the inside. A first cavity 2014 is formed between the outer wall 2011 and the middle wall 2012. The first drive mechanism is disposed within 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 first through-hole 2015 and the second through-hole 2016 are used to allow the external pressure teeth 202 to pass through and move under the drive of the first drive mechanism.

[0087] Please refer to Figure 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 rest against the first outer side surface 1013. A first pressure monitoring device 2023 is provided on the first connecting rod 2022.

[0088] The first pressing teeth 2021 have an arc-shaped structure on their contact surface with the first pressing structure 101, consistent with the outer surface of the first pressing structure 101, so that the first pressing teeth 2021 can tightly abut the outer surface of the first pressing structure 101. In some embodiments, the edge of the first pressing teeth 2021 is blade-like, that is, the thickness of the first pressing teeth 2021 is arranged in a manner that gradually decreases toward its edge. This makes it easier for the first pressing structure 101 to be pressed to form a bite mark and the first indentation protrusion 1011 when the first pressing teeth 2021 abut against the outer surface of the first pressing structure 101. Multiple first pressing teeth 2021 can be arranged along the circumferential direction, with more than one layer of first pressing teeth 2021 arranged along the axial direction of the external pressure device 20. A certain number of first pressing teeth 2021 are provided according to the desired shape of the first indentation protrusion 1011. 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 monitors the abutting pressure of the first pressing tooth 2021 to prevent sealing failure caused by overpressure or underpressure.

[0089] In some embodiments, please refer to Figures 19 to 22 The processing equipment further includes an internal pressure device 30 , which is disposed on the inner side of the second pressing structure 110 .

[0090] The internal pressure device 30 includes an internal pressure shell 301 and an internal pressure tooth 302 provided 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.

[0091] The second driving mechanism may be a hydraulic driving mechanism.

[0092] In the technical solution of the embodiment of the present application, the internal pressure device 30 is disposed inside the second pressing structure 110, and 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. Then, the second driving mechanism drives the internal pressure teeth 302 to move from the second inner side surface 1103 to the second outer side surface 1102 of the second pressing structure 110, thereby applying pressure to the second pressing structure 110, forming the second indentation protrusion 1101 on the second pressing structure 110, and compressing the sealing member 13 to form a seal. The internal pressure device 30 facilitates processing.

[0093] In some embodiments, please refer to Figure 22 and Figure 23 The internal pressure housing 301 includes an outer shell 3011 and an inner shell 3012. A second cavity 3013 is formed within the inner shell 3012. The second drive mechanism is disposed within the second cavity 3013. A third through hole 3015 and a fourth through hole 3014 are respectively provided at 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 drive mechanism.

[0094] Please refer to Figure 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 rest against the second inner side surface 1103. A second pressure monitoring device 3023 is provided on the second connecting rod 3022.

[0095] The contact surface of the second pressing tooth 3021 with the second pressing structure 110 is an arc-shaped structure consistent with the inner side surface of the second pressing structure 110, so that the second pressing tooth 3021 can be tightly pressed against the inner side surface of the second pressing structure 110. In some embodiments, the edge of the second pressing tooth 3021 is a blade-shaped structure, that is, the thickness of the second pressing tooth 3021 is set in a manner of gradually decreasing toward its edge, so that when the second pressing tooth 3021 is pressed against the inner side surface of the second pressing structure 110, it is easier for the second pressing structure 110 to be pressed out by force to form the second indentation protrusion 1101. The second pressing teeth 3021 can be provided in a plurality along 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, Figure 22The two layers shown are provided with a predetermined number of second pressing teeth 3021, depending on the desired shape of the second indentation protrusion 1101. In some embodiments, hydraulic oil is provided within the second cavity 3013. This hydraulic drive controls the movement of the second connecting rod 3022. The second pressure monitoring device 3023, which can be a pressure sensor, monitors the abutment pressure of the second pressing teeth 3021 to prevent seal failure due to overpressure or underpressure.

[0096] 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.

[0097] 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 provided 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 that deforms toward the seal 13, and the first indentation protrusion 1011 is used to press and fix the pole 11 toward the pole 11 on the outer side surface of the seal 13.

[0098] In the battery housing of other embodiments, the terminal 11 forms a receiving groove 112 on the side facing the interior of the battery. The notch of the receiving groove 112 faces the interior of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The terminal 11 is formed with a second clamping structure 110 on the side facing the interior of the battery. 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. The second clamping structure 110 has a second indentation protrusion 1101 that deforms toward the seal 13. The second indentation protrusion 1101 is used to compress and fix the terminal 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 is in contact with the seal 13 and a second inner side surface 1103 that is away from the seal 13. The second indentation protrusion 1101 is formed by applying pressure from the second inner side surface 1103 to the second outer side surface 1102.

[0099] 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 the top wall, the bottom wall or the 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.

[0100] On the other hand, the present application also provides a battery cell, such as Figure 31 and Figure 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.

[0101] In some embodiments, the battery cell includes the aforementioned battery housing. The battery cell may be a cylindrical battery cell.

[0102] The specific embodiments of the battery top cover assembly of the present application are described below with examples.

[0103] Example 1

[0104] Please refer to Figure 3 、 Figure 4 and Figure 5 The present embodiment provides a battery top cover assembly, including 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 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 integral 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 compression structure 101. The first compression structure 101 has a first inner side 1012 that is in contact with the seal 13 and a first outer side 1013 that is away from the seal 13. The first compression structure 101 has a first indentation protrusion 1011 that deforms toward the seal 13. 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 secure 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 surrounding the entire outer circumference of the first compression structure 101.

[0105] The terminal 11 has a receiving groove 112 formed on the side facing the interior of the battery. The notch of the receiving groove 112 faces the interior of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The terminal 11 has a second clamping structure 110 formed on the side facing the interior of the battery. 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. The second clamping structure 110 has a second outer side 1102 that is in contact with the seal 13 and a second inner side 1103 that is away from the seal 13. The second clamping structure 110 has a second indentation protrusion 1101 that is deformed toward the seal 13. 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 terminal 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 the 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 flanging 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.

[0106] Example 2

[0107] Please refer to Figure 6 and Figure 7The present embodiment provides a battery top cover assembly, comprising: 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 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 integral 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 compression structure 101. The first compression structure 101 has a first inner side 1012 that is in contact with the seal 13 and a first outer side 1013 that is away from the seal 13. The first compression structure 101 has a first indentation protrusion 1011 that deforms toward the seal 13. 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 secure 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 surrounding the entire outer circumference of the first compression structure 101.

[0108] The terminal 11 forms a receiving groove 112 on the side facing the interior of the battery. The notch of the receiving groove 112 faces the interior of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The terminal 11 forms a second clamping structure 110 on the side facing the interior of the battery. 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. The second clamping structure 110 has a second outer side 1102 that is in contact with the seal 13 and a second inner side 1103 that is away from the seal 13. The second clamping structure 110 has a second indentation protrusion 1101 that deforms toward the seal 13. 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 compress and fix the terminal 11 on the inner side wall of the receiving groove 112 toward the seal 13. The second indentation protrusions 1101 can be three annular bite marks arranged vertically 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 terminal 11 from the top cover plate 10. The battery top cover assembly of this embodiment does not have a flange structure at the bottom of the terminal 11, which can simplify the processing of the terminal.

[0109] Example 3

[0110] Please refer to Figure 8 、 Figure 9 and Figure 10The present embodiment provides a battery top cover assembly, comprising: a top cover plate 10, a terminal 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 separate structures, and 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 compression 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 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 compression structure 101. The first compression structure 101 has a first inner side 1012 that is in contact with the seal 13 and a first outer side 1013 that is away from the seal 13. The first compression structure 101 has a first indentation protrusion 1011 that deforms toward the seal 13. 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 compress and secure the pole 11 on the outer side of the seal 13 toward the pole 11. The first indentation protrusion 1011 may be a circular bite mark that surrounds the entire outer circumference of the first pressing structure 101 twice.

[0111] During assembly, the first compression 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. Figure 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. The groove 104 is used to accommodate the connecting ring 102 and is welded to the connecting ring 102.

[0112] The terminal 11 forms a receiving groove 112 on the side facing the interior of the battery. The notch of the receiving groove 112 faces the interior of the battery, and the bottom of the receiving groove 112 is located inside the mounting hole 100. The terminal 11 forms a second clamping structure 110 on the side facing the interior of the battery. 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. The second clamping structure 110 has a second outer side 1102 that is in contact with the seal 13 and a second inner side 1103 that is away from the seal 13. The second clamping structure 110 has a second indentation protrusion 1101 that deforms toward the seal 13. 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 compress and fix the terminal 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 .

[0113] The edge of the insulating member 12 is arranged at the bottom of the second compression structure 110 of the top cover plate 10, the sealing member 13 and 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.

[0114] Example 4

[0115] Please refer to Figure 11 and Figure 12The present embodiment provides a battery top cover assembly, comprising: a top cover plate 10, a terminal 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 separate structures, and 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 compression 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 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 compression structure 101. The first compression structure 101 has a first inner side 1012 that is in contact with the seal 13 and a first outer side 1013 that is away from the seal 13. The first compression structure 101 has a first indentation protrusion 1011 that deforms toward the seal 13. 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 compress and secure the pole 11 on the outer side of the seal 13 toward the pole 11. The first indentation protrusion 1011 may be a circular bite mark that surrounds the entire outer circumference of the first pressing structure 101 twice.

[0116] During assembly, the first compression 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. Figure 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. The groove 104 is used to accommodate the connecting ring 102 and is welded to the connecting ring 102.

[0117] The terminal 11 is installed in the mounting hole 100; the bottom of the terminal 11 is located in the mounting hole 100. A receiving groove 112 is formed at the bottom of the terminal 11. The insulating member 12 has a support portion 121 extending toward the terminal 11 at the location of the mounting hole 100. The support portion 121 supports the bottom of the terminal 11 to insulate the terminal 11 from the top cover plate 10. A receiving groove 112 is defined between the bottom of the terminal 11 and the support portion 121 for accommodating the terminal lug. This embodiment of the battery top cover assembly can simplify the processing of the terminal and reduce costs.

[0118] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection 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 pressing structure (101) is provided on the outer side of the top cover plate (10) and around the edge of the mounting hole (100), wherein the first pressing structure (101) and the top cover plate (10) are an integrated structure; A pole (11) is installed in the installation hole (100); A sealing member (13) is provided between a side wall of the pole (11) and a hole wall of the mounting hole (100), the outer side surface of the sealing member (13) being in contact with the inner side surface of the first pressing structure (101), the first pressing structure (101) having a first indentation protrusion (1011) deformed toward the sealing member (13), the first indentation protrusion (1011) being used to press and fix the pole (11) on the outer side surface of the sealing member (13); The first pressing 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), 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).

2. The battery top cover assembly according to claim 1, characterized in that: 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). 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), 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).

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 interior of the battery, the notch of the receiving groove (112) faces the interior 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 pressing structure (110) on the side facing the interior of the battery, and the second pressing structure (110) is a side wall of the accommodating 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) has a second outer side surface (1102) that fits the sealing member (13) and a second inner side surface (1103) that is away from the sealing member (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).

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), 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 sealing member (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).

6. The battery top cover assembly according to claim 4, characterized in that: The thickness of the first compression structure (101) is 0.5 to 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 comprises: an external pressure device (20), the external pressure device (20) is sleeved on the outside of the first pressing structure (101), The external pressure device (20) comprises an external pressure shell (201) and external pressure teeth (202) provided on the external pressure shell (201); a first driving mechanism is provided in the external pressure shell (201) for driving the external pressure teeth (202) to move toward the first outer side surface (1013) of the first pressing structure (101) so that the external pressure teeth (202) apply pressure from the first outer side surface (1013) of the first pressing structure (101) to the first inner side surface (1012) to form a first indentation protrusion (1011), and press the outer side surface of the sealing member (13) toward the pole (11) and fix the pole (11), and / or, The processing equipment further comprises: an internal pressure device (30), wherein the internal pressure device (30) is arranged inside the second pressing structure (110), The internal pressure device (30) comprises an internal pressure shell (301) and internal pressure teeth (302) provided on the internal pressure shell (301); a second driving mechanism is provided in the internal pressure shell (301) for driving the internal pressure teeth (302) to move toward the second inner side surface (1103) of the second pressing structure (110) so that the internal pressure teeth (302) apply pressure from the second inner side surface (1103) of the second pressing structure (110) to the second outer side surface (1102) to form a second indentation protrusion (1101), and press the pole (11) toward the sealing member (13) on the inner side surface of the pole (11).

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) 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 placed 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 pressing 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 shell (301) includes 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 placed 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) 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), and the second driving mechanism drives the second connecting rod (3022) to move so that it drives the second pressure tooth (3021) to rest 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 housing, a mounting hole (100) being provided on a wall of the housing, and a first pressing structure (101) being provided on an outer side surface of the housing (2) and surrounding an edge of the mounting hole (100); A pole (11) is installed in the installation hole (100); A sealing member (13) is provided 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 and fix the pole (11) on the outer side surface of the sealing member (13) toward 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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