Top cover assembly, battery shell, battery, battery pack and electric energy equipment

Abstract

The utility model provides a top cover assembly, a battery shell, a battery, a battery pack and electric energy equipment, the top cover assembly comprises a cover plate, a pole and a terminal, and the cover plate is provided with a penetrating hole; the pole column is arranged in the penetrating hole in a penetrating manner; the terminal is arranged in the penetrating hole in a penetrating manner; the terminal is provided with an assembly blind hole, the pole is accommodated in the assembly blind hole, and at least part of the outer wall of the pole is attached to at least part of the inner wall of the assembly blind hole. According to the top cover assembly, the battery shell, the battery, the battery pack and the electric energy equipment provided by the invention, the over-current performance of the pole and the terminal in the top cover assembly is better, and the power density of the battery formed by the top cover assembly is higher.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a top cover assembly, a battery housing, a battery, a battery pack and an electric energy device. Background Art

[0002] At present, in the assembly structure of the battery cover assembly, the pole passes through the riveted block, and the riveted area between the pole and the riveted block is usually set on the pole, and the pole is fixedly connected to the riveted block by flanging the pole. However, after the pole flanging is fixedly connected to the riveted block, the contact area between the pole and the riveted block is small, resulting in poor current stability between the pole and the riveted block. Moreover, after the pole flanging is fixedly connected to the riveted block, the height of the cover assembly becomes higher, which makes the overall height of the battery formed by the cover assembly higher, affecting the power density of the battery. Utility Model Content

[0003] In order to address the shortcomings of the prior art, the present application provides a top cover assembly, a battery housing, a battery, a battery pack and an electric energy device. The poles and terminals in the top cover assembly have better current carrying performance, and the battery formed by the top cover assembly has a higher power density.

[0004] In a first aspect, the present application provides a top cover assembly, comprising:

[0005] A cover plate having a through hole;

[0006] A pole, which is passed through the passing hole; and

[0007] The terminal is passed through the passing hole; the terminal has an assembly blind hole, the pole is received in the assembly blind hole, and at least a portion of the outer wall of the pole fits at least a portion of the inner wall of the assembly blind hole.

[0008] In a possible implementation manner, the pole is connected to the terminal by riveting, and an outer wall of the pole received in the assembly blind hole is interference fit with an inner wall of the assembly blind hole.

[0009] In a possible implementation manner, the pole is made of aluminum, and the terminal is made of copper.

[0010] In a possible implementation, a protrusion is provided on the inner side wall of the assembly blind hole, and at least a portion of the outer wall of the pole is interference fit with the protrusion; or, a recess is provided on the inner side wall of the assembly blind hole, and at least a portion of the outer wall of the pole is stuck in the recess.

[0011] In a possible implementation, a boss is provided on the bottom wall of the assembly blind hole, and the boss is protruding toward the opening of the assembly blind hole; a groove is provided on the end surface of one end of the pole received in the assembly blind hole, and the boss is received in the groove.

[0012] In a possible implementation manner, the top cover assembly further includes a seal, which is disposed between the terminal and the cover plate, and is used to seal a gap between the terminal and the cover plate and to insulate the terminal from the cover plate.

[0013] In a possible implementation, the terminal further includes a main body and a protruding portion connected to each other, the assembly blind hole is arranged in the main body, and the protruding portion is arranged around the main body; in the axial direction of the assembly blind hole, at least a portion of the seal is arranged between the protruding portion and the cover plate.

[0014] In a possible embodiment, the seal includes a first sealing portion and a second sealing portion connected to each other, at least a portion of the first sealing portion is disposed between the protrusion and the cover plate, and at least a portion of the second sealing portion is disposed between the inner wall of the through hole and the peripheral side wall of the main body.

[0015] In a possible embodiment, the pole includes a first part and a second part that are connected, the first part is protruding from the second part; the first part is accommodated in the assembly blind hole, and the second part has an assembly groove on the end surface facing the first part, the assembly groove is arranged around the first part, and one end of the terminal facing the second part is clamped in the assembly groove.

[0016] In a possible implementation manner, the top cover assembly further includes a first insulating member, and the first insulating member is disposed between the cover plate and the second portion.

[0017] In a possible implementation manner, the top cover assembly further includes a connecting piece and a second insulating member, the connecting piece is connected to an end of the terminal facing away from the pole, and the second insulating member is disposed between the connecting piece and the cover plate.

[0018] In a second aspect, the present application provides a battery housing, comprising:

[0019] The top cover assembly described above.

[0020] In a third aspect, the present application provides a battery, comprising:

[0021] The battery casing described above.

[0022] In a fourth aspect, the present application provides a battery pack, comprising:

[0023] The battery mentioned above.

[0024] In a fifth aspect, the present application provides an electric energy device, comprising:

[0025] The battery pack described above.

[0026] The top cover assembly, battery housing, battery, battery pack and electric energy equipment provided by the present application are provided with a larger connection contact area between the pole and the terminal by fitting the outer wall of the pole and the inner wall of the terminal assembly blind hole, which is beneficial to improving the overcurrent performance of the battery formed by the top cover assembly. Moreover, the pole is received in the terminal assembly blind hole, which can avoid flanging and riveting the pole, and can reduce the overall height of the top cover assembly, which is beneficial to improving the power density of the battery formed by the top cover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some implementation methods provided by the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 is an exploded structural diagram of a top cover assembly provided in one embodiment of the present application;

[0029] Figure 2 is a cross-sectional view of a top cover assembly provided in one embodiment of the present application;

[0030] Figure 3 It is an assembly diagram of a pole and a terminal provided in an embodiment of the present application;

[0031] Figure 4 is a structural diagram of a terminal provided in the first embodiment of the present application;

[0032] Figure 5 is a cross-sectional view of a terminal provided in the first embodiment of the present application;

[0033] Figure 6 is a structural diagram of a terminal provided in the second embodiment of the present application;

[0034] Figure 7 is a cross-sectional view of a terminal provided in the second embodiment of the present application;

[0035] Figure 8 is a structural diagram of a terminal provided in the third embodiment of the present application;

[0036] Fig. 9 is a cross-sectional view of a terminal provided in the third embodiment of the present application;

[0037] Fig.10 It is a cross-sectional view of a terminal, a pole, a sealing member and a first insulating member provided in the third embodiment of the present application.

[0038] Description of Reference Numerals

[0039] Top cover assembly-100, cover plate-10, pole-20, terminal-30, seal-40, first insulating member-50, connecting piece-60, second insulating member-70, through hole-11, first part-21, second part-22, groove-23, assembly groove-24, assembly blind hole-31, recess-32, boss-33, main body-34, protrusion-35, first sealing part-41, second sealing part-42. DETAILED DESCRIPTION

[0040] The technical solution of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described implementation methods are only part of the implementation methods of the present application, rather than all the implementation methods. Based on the implementation methods in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0041] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The directional terms mentioned in the description of the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "top", "side", "bottom", "top wall", "side wall", "bottom wall", "inner side wall", "outer side wall", "length direction", "width direction", "height direction", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying 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 the present application. In the description of the present application, for example, "first", "second", "third", "fourth", etc., are only used to distinguish the objects described and do not have any order or technical meaning. In the description of the present application, the "connection" and "connection" involved, if not otherwise specified, include direct connection (connection) and indirect connection (connection).

[0042] The present application provides an electric energy device, the electric energy device includes a battery pack, and the battery pack is used to provide electric energy to the electric energy device. It should be understood that the electric energy device provided by the present application can be a vehicle, an aircraft, a ship, an energy storage device or an energy storage appliance, etc., and the present application does not limit this.

[0043] The present application also provides a battery pack, which includes a battery.

[0044] The present application also provides a battery, which includes a battery casing and a battery cell, wherein the battery cell is accommodated in the battery casing.

[0045] The present application also provides a battery housing, which includes a top cover assembly and a housing. The top cover assembly is disposed on the housing, and the top cover assembly and the housing form a receiving space, and the receiving space formed by the top cover assembly and the housing is used to receive the battery cell. The top cover assembly can be disposed on any end face or side face of the housing, etc., as long as it can cooperate with the housing to form a receiving space. The top cover assembly is electrically connected to the tab of the battery cell, so that the electric energy of the battery cell can be conducted to the outside of the battery housing through the top cover assembly.

[0046] In the assembly structure of the battery cover assembly provided by the prior art, the pole passes through the riveted block, and the riveted area between the pole and the riveted block is usually set on the pole, and the pole is fixedly connected to the riveted block by flanging the pole. However, after the pole flanging is fixedly connected to the riveted block, the contact area between the pole and the riveted block is small, resulting in poor current stability between the pole and the riveted block. Moreover, after the pole flanging is fixedly connected to the riveted block, the height of the cover assembly becomes higher, thereby making the overall height of the battery formed by the cover assembly higher, affecting the power density of the battery.

[0047] In order to solve the technical problems existing in the above-mentioned prior art, the present application provides a top cover assembly, in which the poles and terminals in the top cover assembly have better current carrying performance, and the power density of the battery formed by the top cover assembly is greater.

[0048] The top cover assembly provided by the present application is described in detail below in conjunction with the accompanying drawings.

[0049] See also Figure 1 , Figure 2 and Figure 3 , Figure 1 is an exploded structural diagram of a top cover assembly provided in one embodiment of the present application, Figure 2 is a cross-sectional view of a top cover assembly provided in one embodiment of the present application, Figure 3 It is an assembly diagram of a pole and a terminal provided in an embodiment of the present application.

[0050] The top cover assembly 100 provided in the present application includes a cover plate 10, a pole 20, a terminal 30, a seal 40, a first insulating member 50, a connecting piece 60 and a second insulating member 70. The pole 20 passes through the cover plate 10, the terminal 30 passes through the cover plate 10 and is connected to the pole 20, the seal 40 is arranged between the cover plate 10 and the terminal 30, the first insulating member 50 is arranged between the side of the cover plate 10 away from the terminal 30 and the pole 20, the connecting piece 60 is connected to one end of the terminal 30 away from the pole 20, and the second insulating member 70 is arranged between the side of the cover plate 10 away from the pole 20 and the connecting piece 60.

[0051] In one embodiment, the top cover assembly 100 includes a cover plate 10, a pole 20 and a terminal 30. The cover plate 10 has a through hole 11 penetrating through opposite sides of the cover plate 10, the pole 20 is penetrated through the through hole 11, and the terminal 30 is penetrated through the through hole 11. The terminal 30 has an assembly blind hole 31, the pole 20 is accommodated in the assembly blind hole 31, and at least part of the outer wall of the pole 20 is fitted with at least part of the inner wall of the assembly blind hole 31. The outer wall of the pole 20 and the inner wall of the assembly blind hole 31 are fitted, including the end face of the pole 20 and the bottom wall of the assembly blind hole 31 are fitted, and the peripheral side wall of the pole 20 is fitted with the inner side wall of the assembly blind hole 31.

[0052] The top cover assembly 100 provided in this embodiment is provided with at least a portion of the outer wall of the pole 20 being fitted with at least a portion of the inner wall of the assembly blind hole 31 of the terminal 30, so that the connection contact area between the pole 20 and the terminal 30 is larger, which is beneficial to improving the overcurrent performance of the battery formed by the top cover assembly 100. Moreover, the pole 20 is received in the assembly blind hole 31 of the terminal 30, which can avoid flanging and riveting the pole 20, and can reduce the overall height of the top cover assembly 100, which is beneficial to improving the power density of the battery formed by the top cover assembly 100.

[0053] In a specific embodiment, the pole 20 is connected to the terminal 30 by riveting, and the outer wall of the pole 20 received in the assembly blind hole 31 is interference fit with the inner wall of the assembly blind hole 31. In other words, after the pole 20 is received in the assembly blind hole 31 of the terminal 30, the terminal 30 and the pole 20 are subjected to riveting treatment, during which the terminal 30 presses the pole 20, so that the pole 20 located in the assembly blind hole 31 of the terminal 30 expands in its radial direction. As a result, an interference fit is formed between the circumferential side wall of the pole 20 located in the assembly blind hole 31 of the terminal 30 and the inner side wall of the assembly blind hole 31 of the terminal 30, so that the pole 20 and the terminal 30 are fixedly connected to the cover plate 10.

[0054] It should be understood that, in the process of riveting the terminal 30 and the pole 20, the riveting action area is located on the terminal 30, and the terminal 30 is moved relative to the pole 20 along the axial direction of the assembly blind hole 31 by applying a riveting force to the terminal 30. By setting the riveting action area of ​​the riveting process on the terminal 30, the damage caused by the riveting process to the pole 20 can be reduced, which is conducive to improving the flatness of the surface of the pole 20, and thus the stability of the conduction and overcurrent of the pole 20 can be improved.

[0055] In a specific embodiment, the pole 20 is made of aluminum and the terminal 30 is made of copper. Since the pole 20 is made of aluminum and the terminal 30 is made of copper, during the riveting process of the terminal 30 and the pole 20, the terminal 30 squeezes the pole 20, so that the pole 20 expands radially in the assembly blind hole 31 of the terminal 30, thereby facilitating the formation of an interference fit between the terminal 30 and the pole 20. At the same time, since the pole 20 is made of aluminum and the terminal 30 is made of copper, the pole 20 and the terminal 30 are made of split materials of different densities, and the fixed connection between the pole 20 and the terminal 30 can be achieved without the flanging riveting process, which is conducive to simplifying the process complexity of the matching connection between the pole 20 and the terminal 30, and is convenient for assembling the top cover assembly 100. At the same time, the pole 20 does not need to be made of a copper-aluminum composite material. Since the pole 20 and the terminal 30 avoid the flanging riveting process, the use of copper in the components of the top cover assembly 100 is reduced, which can reduce the cost of the components of the top cover assembly 100. Moreover, the mass of the pole 20 made of aluminum is smaller than that of the pole 20 made of the copper-aluminum composite material, which is conducive to achieving a lightweight design of the top cover assembly 100.

[0056] See also Figures 2 to 7 , Figure 4 is a structural diagram of a terminal provided in the first embodiment of the present application, Figure 5 is a cross-sectional view of a terminal provided in the first embodiment of the present application, Figure 6 is a structural diagram of a terminal provided in the second embodiment of the present application, Figure 7 It is a cross-sectional view of a terminal provided in the second embodiment of the present application.

[0057] In a specific embodiment, a recess 32 is provided on the inner side wall of the assembly blind hole 31 of the terminal 30, and at least a portion of the outer wall of the pole 20 is stuck in the recess 32. By providing the recess 32 on the assembly blind hole 31, the terminal 30 and the pole 20 are subjected to riveting treatment so that part of the pole 20 is squeezed into the recess 32 of the assembly blind hole 31 of the terminal 30 to form a bite, which can prevent the pole 20 from moving and rotating relative to the terminal 30, thereby making the connection stability between the pole 20 and the terminal 30 better. Among them, the recess 32 is groove-shaped. The groove-shaped recess 32 includes but is not limited to a straight groove, a curved groove, an annular groove, and the like.

[0058] like Figure 4 and Figure 5 As shown, the recess 32 is in the shape of a linear groove, and the recess 32 is arranged in a direction parallel to the axis of the assembly blind hole 31 of the terminal 30. It can be understood that the recess 32 can be arranged in an array, that is, the recess 32 is arranged in a plurality of directions parallel to the axial direction of the assembly blind hole 31 of the terminal 30, and the present application does not limit this.

[0059] like Figure 6 and Figure 7 As shown, the recess 32 may be in a spiral shape or other shapes, and the present application is not limited thereto.

[0060] In some other embodiments, the recess 32 is in the shape of an annular groove, and the recess 32 is arranged perpendicular to the axial direction of the assembly blind hole 31 of the terminal 30. It can be understood that the recess 32 can be arranged in an array, that is, the recess 32 is arranged at intervals in a direction perpendicular to the axial direction of the assembly blind hole 31 of the terminal 30. Of course, the recess 32 includes but is not limited to an open annular groove or a closed annular groove, and the present application does not limit this.

[0061] In some other embodiments, a protrusion is provided on the inner side wall of the assembly blind hole 31 of the terminal 30, and at least a portion of the outer wall of the pole 20 is interference fit with the protrusion, so that the protrusion engages with the pole 20 after the terminal 30 squeezes the pole 20, which can prevent the pole 20 from moving and rotating relative to the terminal 30, thereby making the connection stability between the pole 20 and the terminal 30 better. The present application does not impose any restrictions on this.

[0062] See also Figure 2 and Figure 3 In a specific embodiment, a boss 33 is provided on the bottom wall of the assembly blind hole 31, and the boss 33 is provided to protrude toward the opening of the assembly blind hole 31. A groove 23 is provided on the end surface of one end of the pole 20 received in the assembly blind hole 31, and the boss 33 is received in the groove 23. By providing the boss 33 on the bottom wall of the assembly blind hole 31 and providing the groove 23 on the pole 20, after the terminal 30 and the pole 20 are riveted, the boss 33 is inserted into the groove 23, and the boss 33 also squeezes the inner side wall of the groove 23, so that the radial expansion effect of the pole 20 is better, thereby improving the stability of the connection between the pole 20 and the terminal 30.

[0063] More specifically, in order to make the boss 33 have a better squeezing effect on the inner side wall of the groove 23, and further improve the radial expansion effect of the pole 20, the boss 33 is interference-fitted with the inner side wall of the groove 23. Moreover, the boss 33 is in a cone shape, and the groove 23 is in a cone groove shape, so as to facilitate the accuracy of the boss 33 being inserted into the groove 23, reduce the abutment and interference between the boss 33 and the pole 20, and thus help to improve the accuracy of the assembly between the pole 20 and the terminal 30.

[0064] It should be understood that the boss 33 can be an independent structure on the bottom wall of the assembly blind hole 31 of the terminal 30, or the boss 33 can be a structure formed by extruding the bottom wall of the assembly blind hole 31 of the terminal 30 and integrated with the terminal 30, and the present application does not impose any restrictions on this.

[0065] See also Figure 1 and Figure 2In a specific embodiment, the top cover assembly 100 further includes a seal 40, which has the functions of sealing and insulation. The seal 40 is disposed between the terminal 30 and the cover plate 10, and is used to seal the gap between the terminal 30 and the cover plate 10, and is also used to insulate the terminal 30 from the cover plate 10. The seal 40 is disposed between the terminal 30 and the cover plate 10, so that the gap between the peripheral side wall of the terminal 30 and the through hole 11 of the cover plate 10 is sealed, thereby improving the overall sealing performance of the top cover assembly 100. Moreover, the seal 40 is also used to insulate the terminal 30 from the cover plate 10, which is beneficial to improving the insulation performance between the terminal 30 and the cover plate 10.

[0066] More specifically, the terminal 30 is an integrally formed structure, and the terminal 30 further includes a main body 34 and a protrusion 35 connected to each other, the assembly blind hole 31 is arranged on the main body 34, and the protrusion 35 is arranged around the main body 34. In the axial direction of the assembly blind hole 31, at least part of the seal 40 is arranged between the protrusion 35 and the side of the cover plate 10 away from the pole 20. In the radial direction of the assembly blind hole 31, at least part of the seal 40 is arranged between the main body 34 and the inner side wall of the through hole 11 of the cover plate 10. By at least part of the seal 40 being arranged between the protrusion 35 and the side of the cover plate 10 away from the pole 20, and at least part of the seal 40 being arranged between the main body 34 and the inner side wall of the through hole 11 of the cover plate 10, the insulation performance and sealing performance between the terminal 30 and the cover plate 10 are improved.

[0067] It should be understood that the seal 40 is in a circular shape. When the terminal 30 passes through the through hole 11 of the cover plate 10, the seal 40 is squeezed so that the seal 40 is in an "L" shape, that is, in the axial direction of the blind hole 31, at least part of the seal 40 is arranged between the protrusion 35 and the side of the cover plate 10 away from the pole 20. In the radial direction of the blind hole 31, at least part of the seal 40 is arranged between the main body 34 and the inner side wall of the through hole 11 of the cover plate 10.

[0068] More specifically, the seal 40 is an integrally formed structure, and includes a first seal portion 41 and a second seal portion 42 connected to each other, at least a portion of the first seal portion 41 is disposed between the protrusion 35 and the cover plate 10, and at least a portion of the second seal portion 42 is disposed between the inner wall of the through hole 11 and the peripheral side wall of the main body 34. The first seal portion 41 is disposed between the protrusion 35 and the side of the cover plate 10 away from the pole 20, and the second seal portion 42 is disposed between the main body 34 and the inner side wall of the through hole 11 of the cover plate 10, so that the insulation performance and sealing performance between the terminal 30 and the cover plate 10 are better.

[0069] See also Figure 1 and Figure 2In a specific embodiment, the pole 20 is an integrally formed structure, and the pole 20 includes a first portion 21 and a second portion 22 connected to each other, and the first portion 21 is protruded from the second portion 22. The first portion 21 is received in the assembly blind hole 31, and the second portion 22 has an assembly groove 24 on its end surface facing the first portion 21, and the assembly groove 24 is arranged around the first portion 21, and one end of the terminal 30 facing the second portion 22 is clamped in the assembly groove 24. By providing the assembly groove 24 on the second portion 22 of the pole 20, after the terminal 30 is riveted and connected to the pole 20, one end of the terminal 30 close to the second portion 22 of the pole 20 is clamped in the assembly groove 24, so that the connection between the terminal 30 and the pole 20 is more firmly established, which is conducive to improving the connection stability between the terminal 30 and the pole 20.

[0070] More specifically, the top cover assembly 100 further includes a first insulating member 50, which is disposed between the cover plate 10 and the second portion 22. The first insulating member 50 is a plastic member, and the first insulating member 50 is disposed so that an insulating design is formed between the cover plate 10 and the second portion 22 of the pole 20, which is beneficial to improving the stability of the conduction of the pole 20. It can be understood that in some other embodiments, the first insulating member 50 can be made of other materials, and the present application does not limit this.

[0071] See also Figure 1 and Figure 2 In a specific embodiment, the top cover assembly 100 also includes a connecting piece 60 and a second insulating member 70, the connecting piece 60 is connected to the end of the terminal 30 away from the pole 20, and the second insulating member 70 is arranged between the connecting piece 60 and the cover plate 10, wherein the second insulating member 70 is a plastic member. Through the setting of the connecting piece 60, the connecting piece 60 is used to electrically connect the terminal 30 with the pole ear of the battery pole core so that the pole 20 is electrically connected to the battery pole core. The second insulating member 70 is arranged between the connecting piece 60 and the cover plate 10 to form an insulating design between the connecting piece 60 and the cover plate 10. Among them, the connecting piece 60 and the terminal 30 are riveted and welded. It can be understood that in some other embodiments, the second insulating member 70 can be made of other materials, and the present application does not limit this.

[0072] See also Figures 1 to 3In this embodiment, the pole 20 passes through the through hole 11 of the cover plate 10 from one end of the cover plate 10, and the terminal 30 passes through the through hole 11 of the cover plate 10 from the other end of the cover plate 10. The second portion 22 of the pole 20 is arranged on one side of the cover plate 10, and the first insulating member 50 is arranged between one side of the cover plate 10 and the second portion 22. The protrusion 35 of the terminal 30 is located on the peripheral side wall of the end of the terminal 30 away from the second portion 22, the protrusion 35 of the terminal 30 is arranged on the other side of the cover plate 10, the first sealing portion 41 is arranged between the other side of the cover plate 10 and the protrusion 35 of the terminal 30, and the second sealing portion 42 is arranged between the inner side wall of the through hole 11 of the cover plate 10 and the peripheral side wall of the terminal 30. The connecting piece 60 is connected to one end of the terminal 30 away from the second part 22 of the pole 20, and the connecting piece 60 is arranged on the side of the protrusion 35 away from the cover 10, at least part of the connecting piece 60 is exposed from the protrusion 35, and the second insulating member 70 is arranged between the other side of the cover 10 and the connecting piece 60.

[0073] See also Figures 8 to 10 , Figure 8 is a structural diagram of a terminal provided in the third embodiment of the present application, Fig. 9 is a cross-sectional view of a terminal provided in the third embodiment of the present application, Fig.10 It is a cross-sectional view of a terminal, a pole, a sealing member and a first insulating member provided in the third embodiment of the present application.

[0074] In another embodiment, the pole 20 and the terminal 30 are both penetrated through the penetration hole 11 of the cover plate 10 from the same side of the cover plate 10, and the terminal 30 is penetrated through the penetration hole 11 of the cover plate 10 before the pole 20, and the pole 20 is then inserted into the assembly blind hole 31 of the terminal 30. The protrusion 35 of the terminal 30 is arranged on the peripheral side wall of one end of the second part 22 of the terminal 30 close to the pole 20, the first sealing part 41 is arranged between the side of the cover plate 10 close to the second part 22 of the pole 20 and the protrusion 35 of the terminal 30, and the second sealing part 42 is arranged between the inner side wall of the penetration hole 11 of the cover plate 10 and the peripheral side wall of the terminal 30. Part of the first insulating member 50 is arranged between one side of the second part 22 of the cover plate 10 close to the pole 20 and the second part 22 of the pole 20, part of the first insulating member 50 is arranged between one side of the second part 22 of the pole 20 of the cover plate 10 and the protrusion 35 of the terminal 30, and part of the first insulating member 50 is arranged around the peripheral side wall of the second part 22.

[0075] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A top cover assembly (100), characterized in that: include: A cover plate (10) having a through hole (11); A pole (20) is inserted into the insertion hole (11); as well as The terminal (30) is inserted into the insertion hole (11); the terminal (30) has an assembly blind hole (31), the pole (20) is received in the assembly blind hole (31), and at least a portion of the outer wall of the pole (20) is in contact with at least a portion of the inner wall of the assembly blind hole (31).

2. The top cover assembly (100) according to claim 1, characterized in that: The pole (20) is connected to the terminal (30) by riveting, and the outer wall of the pole (20) received in the assembly blind hole (31) is interference-fitted with the inner wall of the assembly blind hole (31).

3. The top cover assembly (100) according to claim 1, characterized in that: The material of the pole (20) is aluminum, and the material of the terminal (30) is copper.

4. The top cover assembly (100) according to claim 1, characterized in that: A protrusion is provided on the inner side wall of the assembly blind hole (31), and at least a portion of the outer wall of the pole (20) is interference-fitted with the protrusion; or a recess (32) is provided on the inner side wall of the assembly blind hole (31), and at least a portion of the outer wall of the pole (20) is clamped in the recess (32).

5. The top cover assembly (100) according to claim 1, characterized in that: A boss (33) is provided on the bottom wall of the assembly blind hole (31), and the boss (33) is arranged to protrude toward the opening of the assembly blind hole (31); a groove (23) is provided on the end surface of one end of the pole (20) received in the assembly blind hole (31), and the boss (33) is received in the groove (23).

6. The top cover assembly (100) according to claim 1, characterized in that: The top cover assembly (100) further comprises a seal (40), wherein the seal (40) is arranged between the terminal (30) and the cover plate (10), and the seal (40) is used to seal the gap between the terminal (30) and the cover plate (10) and to insulate the terminal (30) from the cover plate (10).

7. The top cover assembly (100) according to claim 6, characterized in that: The terminal (30) further comprises a main body (34) and a protruding portion (35) connected to each other, the assembly blind hole (31) is arranged on the main body (34), and the protruding portion (35) is arranged around the main body (34); in the axial direction of the assembly blind hole (31), at least a portion of the sealing member (40) is arranged between the protruding portion (35) and the cover plate (10).

8. The top cover assembly (100) according to claim 7, characterized in that: The sealing member (40) comprises a first sealing portion (41) and a second sealing portion (42) connected to each other, wherein at least a portion of the first sealing portion (41) is disposed between the protruding portion (35) and the cover plate (10), and at least a portion of the second sealing portion (42) is disposed between an inner wall of the through hole (11) and a peripheral side wall of the main body (34).

9. The top cover assembly (100) according to any one of claims 1 to 8, characterized in that: The pole (20) comprises a first part (21) and a second part (22) connected to each other, the first part (21) being protruding from the second part (22); the first part (21) being received in the assembly blind hole (31); the second part (22) having an assembly groove (24) on its end surface facing the first part (21); the assembly groove (24) being arranged around the first part (21); and one end of the terminal (30) facing the second part (22) being clamped in the assembly groove (24).

10. The top cover assembly (100) according to claim 9, characterized in that: The top cover assembly (100) further comprises a first insulating member (50), wherein the first insulating member (50) is disposed between the cover plate (10) and the second portion (22).

11. The top cover assembly (100) according to claim 1, characterized in that: The top cover assembly (100) further comprises a connecting piece (60) and a second insulating member (70), wherein the connecting piece (60) is connected to an end of the terminal (30) facing away from the pole (20), and the second insulating member (70) is arranged between the connecting piece (60) and the cover plate (10).

12. A battery casing, characterized in that: include: A top cover assembly (100) as claimed in any one of claims 1 to 11.

13. A battery, characterized in that: include: The battery casing as claimed in claim 12.

14. A battery pack, characterized in that: include: The battery as claimed in claim 13.

15. An electric energy device, characterized in that: include: The battery pack as claimed in claim 14.

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