Top cover assembly, battery and electric equipment

Abstract

The utility model provides a top cover assembly, a battery and electric equipment, the top cover assembly is used for the battery, and the top cover assembly comprises a cover plate, a conductive part and an insulating part. The cover plate is provided with a through hole; the conductive piece is arranged in the through hole in a penetrating mode, one part of the conductive piece is located on one side of the cover plate in the thickness direction, and the other part of the conductive piece is located on the other side of the cover plate in the thickness direction; and the insulating part is used for isolating the conductive part from the cover plate and fixedly connecting the cover plate with the conductive part. The top cover assembly, the battery and the electric equipment provided by the utility model are simple in structure, relatively high in assembly efficiency and relatively low in production cost.

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, and an electrical device. Background Art

[0002] In existing battery structures, due to the need for insulation design, the top cover is composed of many parts, which makes the structure of the top cover complex, difficult to assemble, and low in assembly efficiency, affecting the production cost of the top cover and the entire 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, and an electrical device with a simple structure, high assembly efficiency, and low production cost.

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

[0005] a cover plate having a through hole;

[0006] a conductive member, passing through the through hole, with a portion of the conductive member located on one side of the cover plate along the thickness direction, and another portion of the conductive member located on the other side of the cover plate along the thickness direction;

[0007] The insulating member is used to isolate the conductive member and the cover plate, and to fixedly connect the cover plate and the conductive member.

[0008] In a possible embodiment, the conductive member includes an integrally formed first connector, a second connector, and a third connector, the second connector being connected between the first connector and the third connector; the first connector is arranged on one side of the cover plate along the thickness direction, the second connector is passed through the through hole, and the third connector is arranged on the other side of the cover plate along the thickness direction.

[0009] In a possible implementation manner, the first connecting member is a plate-shaped structure.

[0010] In a possible implementation manner, the insulating member is sealed between the cover plate and the first connecting member, and the insulating member is also sealed between the cover plate and the second connecting member.

[0011] In one possible embodiment, the conductive member further includes a transition member, which is connected between the second connector and the third connector; wherein the transition member is inclined relative to both the second connector and the third connector; and / or, along an extension direction perpendicular to the conductive member, an area of ​​a cross section of the second connector is smaller than an area of ​​a cross section of the third connector, and along a direction perpendicular to the transition member from an end close to the second connector to an end close to the third connector, an area of ​​the cross section of the transition member tends to increase.

[0012] In one possible embodiment, the insulating member includes a first insulating portion and a second insulating portion that are connected to each other; the first insulating portion is located between the cover plate and the first connecting member; the second insulating portion is located in the through hole and between the inner side wall of the through hole forming the cover plate and the second connecting member.

[0013] In a possible implementation manner, the insulating member further includes a third insulating portion, and the third insulating portion is provided on a side of the cover plate facing away from the first connecting member.

[0014] In a possible implementation manner, the thickness of the first insulating portion is greater than or equal to 0.5 mm, the thickness of the second insulating portion is greater than or equal to 0.5 mm, and the thickness of the third insulating portion is greater than or equal to 0.5 mm.

[0015] In a possible implementation manner, a positioning hole is provided on the cover plate, and at least a portion of the insulating member is received in the positioning hole.

[0016] In a possible implementation, there are multiple positioning holes, and an opening of at least one positioning hole is provided on a side of the cover plate facing the first connecting member.

[0017] In a possible implementation, the positioning hole is a blind hole.

[0018] In a possible implementation manner, the positioning hole is a circular hole; the depth of the positioning hole is in the range of [0.3, 1.0] mm; and / or the diameter of the positioning hole is in the range of [0.8, 2.0] mm.

[0019] In a possible implementation, the inner side wall of the positioning hole is inclined relative to the hole centerline of the positioning hole, and the inclination angle of the inner side wall of the positioning hole relative to the hole centerline is in the range of [2, 8]°.

[0020] In a possible implementation manner, the insulating component is a nano-injection molded component.

[0021] In another aspect, the present application provides a battery comprising:

[0022] The top cover assembly described above.

[0023] On the other hand, the present application further provides an electrical device, comprising:

[0024] The battery mentioned above.

[0025] The top cover assembly provided by the present application has a portion of the conductive member located on one side of the cover plate along the thickness direction, and another portion of the conductive member located on the other side of the cover plate along the thickness direction, so that the battery pole core can be electrically connected to the outside of the battery only through the conductive member. The structure of the conductive member is simple, and it is only necessary to assemble the conductive member with the cover plate, and then form the insulating member between the cover plate and the conductive member and fix the conductive member to the cover plate to complete the assembly of the top cover assembly, so that the structure of the top cover assembly is simple and the assembly efficiency is high, which is conducive to reducing the production cost of the top cover assembly. In addition, the insulating member is used to isolate the conductive member and the cover plate, and the insulating member is also used to fix the cover plate and the conductive member so that there is good insulation performance between the cover plate and the conductive member, and also makes the connection between the cover plate and the conductive member more firm, which is conducive to improving the overall assembly stability of the top cover assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0027] Figure 1 This is an assembly structure diagram of a top cover assembly provided in one embodiment of the present application;

[0028] Figure 2 This is an exploded structural diagram of a top cover assembly provided in one embodiment of the present application;

[0029] Figure 3 This is a partial exploded structural diagram of a top cover assembly provided in one embodiment of the present application;

[0030] Figure 4 This is a partial cross-sectional view of a top cover assembly provided in one embodiment of the present application. Figure 1 ;

[0031] Figure 5 This is a partial cross-sectional view of a top cover assembly provided in one embodiment of the present application. Figure 2 . DETAILED DESCRIPTION

[0032] The technical solution of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0033] The description of the following embodiments is with reference to the attached diagrams, which 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 "up", "down", "front", "back", "left", "right", "inside", "outside", "top surface", "side", "bottom surface", "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, unless otherwise specified, include direct connection (connection) and indirect connection (connection).

[0034] This application provides an electrical device, which includes a battery and a load. The battery is electrically connected to the load and supplies power to the load to enable the load to operate normally. It should be understood that the electrical devices provided herein include, but are not limited to, vehicles, industrial equipment, household appliances, office equipment, and the like, and this application is not intended to limit such devices.

[0035] The present application also provides a battery comprising a top cover assembly, a pole core, and a housing. The top cover assembly is disposed on the housing, and the pole core is accommodated in a receiving space formed by the top cover assembly and the housing. The top cover assembly is electrically connected to a tab of the pole core, so that the pole core can transmit electrical energy to the outside world through the tab and the top cover assembly.

[0036] As users have increasingly higher requirements for electrical equipment, the structural complexity and production cost of batteries, which are one of the main components of electrical equipment, have a greater impact on the structural complexity and production cost of the electrical equipment as a whole. Therefore, users have increasingly stringent requirements for cost control of batteries, which includes optimizing the design of the battery's top cover assembly structure to simplify the battery's top cover assembly structure, thereby reducing the overall manufacturing cost and assembly cost of the battery. In existing battery structures, due to the need for insulation design, there are many parts that form the top cover assembly, making the structure of the top cover assembly complex, difficult to assemble, and low in assembly efficiency, affecting the production cost of the top cover assembly and the battery as a whole. In view of this, the present application provides a top cover assembly with a simple structure, high assembly efficiency, and low production cost, thereby reducing the overall production cost of the battery and electrical equipment.

[0037] The top cover assembly provided in this application is introduced in detail below.

[0038] See also Figure 1 、 Figure 2 and Figure 3 , Figure 1 This is an assembly structure diagram of a top cover assembly provided in one embodiment of the present application. Figure 2 This is an exploded structural diagram of a top cover assembly provided in one embodiment of the present application. Figure 3 This is a partial exploded structural diagram of a top cover assembly provided in one embodiment of the present application.

[0039] The present application provides a top cover assembly 100, which includes a cover plate 10, a conductive member 30 and an insulating member 50. The conductive member 30 passes through the cover plate 10, and the conductive member 30 is used to electrically connect the battery's pole core to the outside of the cover plate 10. The insulating member 50 is arranged between the cover plate 10 and the conductive member 30. The cover plate 10 has a through hole 11, and the conductive member 30 passes through the through hole 11. One end of the conductive member 30 is located on one side of the cover plate 10 along the thickness direction, and one end of the conductive member 30 is used to electrically connect to the outside of the battery. The other end of the conductive member 30 is located on the other side of the cover plate 10 along the thickness direction, and the other end of the conductive member 30 is used to electrically connect to the battery's pole core. The insulating member 50 is used to isolate the cover plate 10 and the conductive member 30, and the conductive member 30 is also used to fix the cover plate 10 and the conductive member 30 to ensure a sealing connection between the cover plate 10 and the conductive member 30.

[0040] The top cover assembly 100 provided by the present application has a portion of the conductive member 30 located on one side of the cover plate 10 along the thickness direction, and another portion of the conductive member 30 located on the other side of the cover plate 10 along the thickness direction. The battery cell can be electrically connected to the outside of the battery only through the conductive member 30. The structure of the conductive member 30 is simple. It is only necessary to assemble the conductive member 30 with the cover plate 10, and then form the insulating member 50 between the cover plate 10 and the conductive member 30 and fix the conductive member 30 to the cover plate 10 to complete the assembly of the top cover assembly 100, so that the structure of the top cover assembly 100 is simple and the assembly efficiency is high, which is conducive to reducing the production cost of the top cover assembly 100. In addition, the insulating member 50 is used to isolate the conductive member 30 and the cover plate 10. The insulating member 50 is also used to fix the cover plate 10 and the conductive member 30 to ensure good insulation and sealing performance between the cover plate 10 and the conductive member 30, and also makes the connection between the cover plate 10 and the conductive member 30 more secure, which is conducive to improving the overall assembly stability of the top cover assembly 100.

[0041] See also Figure 2 、 Figure 4 and Figure 5 , Figure 4 This is a partial cross-sectional view of a top cover assembly provided in one embodiment of the present application. Figure 1 , Figure 5 This is a partial cross-sectional view of a top cover assembly provided in one embodiment of the present application. Figure 2 .

[0042] In one embodiment, the conductive member 30 includes an integrally formed first connector 31, a second connector 32, and a third connector 33, wherein the second connector 32 is connected between the first connector 31 and the third connector 33. The first connector 31 is arranged on one side of the cover plate 10 along the thickness direction, the second connector 32 is passed through the through hole 11, and the third connector 33 is arranged on the other side of the cover plate 10 along the thickness direction. Generally, the first connector 31 is a pole terminal, which is used to electrically connect to the external components of the battery. The third connector 33 is an electrode lead-out tab, which is used to electrically connect the pole core inside the battery. Specifically, the third connector 33 is electrically connected to the pole tab of the pole core. The second connector 32 is an intermediate member, which electrically connects the pole terminal and the electrode lead-out tab.

[0043] The top cover assembly 100 provided in the present application is formed by integrally forming a conductive member 30 with a first connector 31, a second connector 32, and a third connector 33. The second connector 32 is provided with a through hole 11 and is connected between the first connector 31 and the third connector 33. The first connector 31 is provided on one side of the cover plate 10 along the thickness direction for electrical connection to the outside of the battery. The third connector 33 is provided on the other side of the cover plate 10 along the thickness direction for electrical connection to the battery core. The assembly and connection between the first connector 31, the second connector 32, and the third connector 33 can be omitted. Only the conductive member 30 needs to be assembled with the cover plate 10, and then the insulating member 50 is formed between the cover plate 10 and the conductive member 30 by a process such as injection molding to complete the assembly of the top cover assembly 100. This simplifies the structure of the top cover assembly 100 and improves assembly efficiency, which helps reduce the production cost of the top cover assembly 100.

[0044] See also Figure 2 、 Figure 4 and Figure 5 In one embodiment, the first connector 31, the second connector 32, and the third connector 33 are integrally formed to form the conductive member 30. The first connector 31 is arranged parallel to the cover plate 10, the second connector 32 is arranged perpendicular to the cover plate 10, and the third connector 33 is arranged perpendicular to the cover plate 10 and parallel to the second connector 32. The third connector 33 is used to connect to the electrode core tab. The width of the second connector 32 and the width of the third connector 33 transition smoothly, that is, the connection between the second connector 32 and the third connector 33 is designed from narrow to wide, to avoid arc interference between the third connector 33 and the electrode core tab.

[0045] In one embodiment, the first connector 31 is a plate-like structure, so that the first connector 31 can be electrically connected to the structure outside the battery, and the connection area between the first connector 31 and the external structure is increased, thereby improving the reliability of the electrical connection between the first connector 31 and the external components of the battery. At the same time, the first connector 31 is a plate-like structure, which can increase the contact area between the first connector 31 and the insulating member 50, improve the reliability of the fixation between the first connector 31 and the cover plate 10, and thereby improve the overall stability of the top cover assembly 100. It is understandable that in some other embodiments, the first connector 31 can be a spherical body, an ellipsoid, a cone, etc. It is only necessary to ensure that the first connector 31 can be electrically connected to the structure outside the battery, and this application does not impose any restrictions on this. Furthermore, the first connector 31 is arranged parallel to the cover plate 10.

[0046] In one embodiment, the insulating member 50 is sealed between the cover plate 10 and the first connecting member 31 , and the insulating member 50 is also sealed between the cover plate 10 and the second connecting member 32 to ensure insulation between the conductive member 30 and the cover plate 10 .

[0047] In a specific embodiment, the insulating member 50 is a nano-injection molded part, that is, the insulating member 50 is formed between the cover plate 10 and the conductive member 30 using a nano-injection molding process. Specifically, before the insulating member 50 is formed between the cover plate 10 and the conductive member 30 using nano-injection molding, the cover plate 10 and the conductive member 30 are partially pickled to a nano-etching level. The third connector 33 of the conductive member 30 is then inserted into the through-hole 11 of the cover plate 10 until the second connector 32 of the conductive member 30 is located at the position of the through-hole 11, and then the insulating member 50 is nano-injection molded. The formation of the insulating member 50 using a nano-injection molding process helps improve the sealing performance of the insulating member 50 between the cover plate 10 and the conductive member 30.

[0048] It is understandable that in some other embodiments, the insulating member 50 can be formed between the cover plate 10 and the conductive member 30 by other processes to achieve a sealing arrangement between the conductive member 30 and the cover plate 10, and this application does not impose any limitation on this.

[0049] See also Figure 2 、 Figure 4 and Figure 5 In one embodiment, the conductive member 30 further includes a transition member 34, which is connected between the second connector 32 and the third connector 33. The transition member 34 is tilted relative to both the second connector 32 and the third connector 33. By tilting the transition member 34 relative to both the second connector 32 and the third connector 33, the third connector 33 can form a clearance structure for the battery core tab. This can reduce interference between the conductive member 30 and the battery core tab, thereby minimizing the impact of the third connector 33 of the conductive member 30 on the dressing area on the battery core tab.

[0050] In one embodiment, along the extension direction of the vertical transition piece 34, the cross-sectional area of ​​the second connector 32 is smaller than the cross-sectional area of ​​the third connector 33. The cross-sectional area of ​​the transition piece 34 increases from the end of the vertical transition piece 34 near the second connector 32 to the end of the transition piece 34 near the third connector 33. By increasing the cross-sectional area of ​​the transition piece 34 from the end of the vertical transition piece 34 near the second connector 32 to the end of the transition piece 34 near the third connector 33, arc interference between the third connector 33 and the pole core tab is avoided.

[0051] In addition, in one embodiment, the transition piece 34 can be integrally formed with the second connecting piece 32 and the third connecting piece 33, thereby reducing assembly difficulty and saving welding costs.

[0052] See also Figure 2 、 Figure 4 and Figure 5In one embodiment, the insulating member 50 includes a first insulating portion 51, a second insulating portion 52, and a third insulating portion 53. The first insulating portion 51 is parallel to the cover plate 10 and located on one side of the cover plate 10 along the thickness direction. The second insulating portion 52 is perpendicular to the cover plate 10 and located within the through hole 11. The third insulating portion 53 is parallel to the cover plate 10 and located on the other side of the cover plate 10 along the thickness direction. The second insulating portion 52 is connected between the first insulating portion 51 and the third insulating portion 53. The first insulating portion 51, the second insulating portion 52, and the third insulating portion 53 are sequentially connected to form a "C"-shaped insulating member 50.

[0053] In a specific embodiment, after the conductive member 30 passes through the through hole 11 of the cover plate 10, the first connecting member 31 is arranged parallel to the cover plate 10, and the first connecting member 31 and the cover plate 10 are spaced apart, and the first insulating part 51 is formed between the first connecting member 31 and the cover plate 10 by a process such as nano injection molding.

[0054] The top cover assembly 100 provided in the present application is arranged between the first connecting member 31 and the cover plate 10 through the first insulating portion 51, so that the first connecting member 31 and the cover plate 10 are insulated and sealed. At the same time, the first insulating portion 51 is also used to support the first connecting member 31 to prevent the first connecting member 31 from moving toward the cover plate 10, which is beneficial to improving the structural stability of the top cover assembly 100.

[0055] In a specific embodiment, the second connecting member 32 is vertically arranged between the first connecting member 31. After the conductive member 30 passes through the through hole 11 of the cover plate 10, the second connecting member 32 is vertically arranged with the cover plate 10. The peripheral side wall of the second connecting member 32 and the inner side wall of the through hole 11 are spaced apart. The second insulating part 52 is formed between the peripheral side wall of the second connecting member 32 and the inner side wall of the through hole 11 by nano injection molding and other processes.

[0056] The top cover assembly 100 provided in the present application is provided with a second insulating portion 52 between the peripheral side wall of the second connecting member 32 and the inner side wall of the through hole 11, so that the second connecting member 32 and the cover plate 10 are insulated and sealed. At the same time, the second insulating portion 52 is also used to fix the second connecting member 32 and the conductive member 30 as a whole to prevent the second connecting member 32 and the conductive member 30 from moving as a whole in the through hole 11, which is beneficial to improving the structural stability of the top cover assembly 100.

[0057] In a specific embodiment, the third insulating portion 53 is formed on the side of the cover plate 10 away from the first connector 31 by a process such as nano injection molding. The third insulating portion 53 is used to form an insulating design between the cover plate 10 and the battery tab.

[0058] The top cover assembly 100 provided in the present application, through the provision of the third insulating portion 53, can, on the one hand, form an insulating design between the cover plate 10 and the battery tab; on the other hand, the third insulating portion 53 can more firmly dispose the insulating member 50 between the cover plate 10 and the conductive member 30, so that the insulating member 50 is more stable between the cover plate 10 and the conductive member 30, which is beneficial to improving the structural stability of the top cover assembly 100.

[0059] It should be understood that the first insulating portion 51, the second insulating portion 52, and the third insulating portion 53 of the insulating member 50 provided in this embodiment are simultaneously formed into an integral structure through a process such as nano-injection molding. In some other embodiments, the first insulating portion 51, the second insulating portion 52, and the third insulating portion 53 can be formed sequentially through the nano-injection molding process, and this application does not limit this.

[0060] It should be understood that in some other embodiments, the third insulating portion 53 may be omitted from the insulating member 50, and this application does not limit this. At the same time, the third insulating portion 53 may be replaced by other insulating structures, and this application does not limit this.

[0061] See also Figure 2 、 Figure 4 and Figure 5 In one embodiment, the thickness of the first insulating portion 51 is greater than or equal to 0.5 mm, the thickness of the second insulating portion 52 is greater than or equal to 0.5 mm, and the thickness of the third insulating portion 53 is greater than or equal to 0.5 mm. In other words, in the insulating member 50, the thinnest thickness at any position of the insulating member 50 is greater than or equal to 0.5 mm.

[0062] The top cover assembly 100 provided in the present application can reduce the occurrence of insulation failure or sealing failure caused by the insulating part 50 being too thin by limiting the thickness of the thinnest part of the insulating part 50 to be greater than or equal to 0.5 mm, which is beneficial to increasing the insulation performance and sealing performance of the insulating part 50 between the cover plate 10 and the conductive part 30.

[0063] See also Figure 2 、 Figure 4 and Figure 5 In one embodiment, a positioning hole 12 is provided on the cover plate 10, and at least a portion of the insulating member 50 is received in the positioning hole 12. Since the insulating member 50 is formed by nano-injection molding, the positioning hole 12 is provided, and at least a portion of the insulating member 50 is formed in the positioning hole 12 during the nano-injection molding process, the connection between the insulating member 50 and the cover plate 10 is more stable, which can reduce the risk of the insulating member 50 falling off the cover plate 10, and thus make the connection between the cover plate 10, the conductive member 30, and the insulating member 50 more secure, which is conducive to improving the overall stability of the top cover assembly 100.

[0064] In a specific embodiment, a positioning hole 12 is provided on a side of the cover plate 10 near the first insulating portion 51, and at least a portion of the insulating member 50 is received in the positioning hole 12. Since the insulating member 50 is formed by nano-injection molding, the positioning hole 12 is provided, and at least a portion of the insulating member 50 is formed in the positioning hole 12 during the nano-injection molding process, the connection between the insulating member 50 and the cover plate 10 is more stable, which can reduce the risk of the insulating member 50 falling off the cover plate 10, thereby making the connection between the cover plate 10, the conductive member 30, and the insulating member 50 more secure, thereby improving the overall stability of the top cover assembly 100.

[0065] In a specific embodiment, the positioning hole 12 is a blind hole, which can prevent the insulating member 50 from leaking out of the positioning hole 12, thereby improving the molding effect of the insulating member 50 in the positioning hole 12. It is understood that in some other embodiments, the positioning hole 12 can also be a hole that passes through the cover plate 10, and this application is not limited to this.

[0066] In a specific embodiment, the depth of the positioning hole 12 is within a range of [0.3, 1.0] mm. By limiting the depth range of the positioning hole 12, the portion of the insulating member 50 within the positioning hole 12 can be securely fixed to the cover plate 10, thereby ensuring the stability of the connection between the insulating member 50 and the cover plate 10, which helps to improve the overall stability of the top cover assembly 100.

[0067] In a specific embodiment, the positioning hole 12 is a circular hole with a diameter in the range of [0.8, 2.0] mm. By limiting the length of the positioning hole 12, the portion of the insulating member 50 within the positioning hole 12 can be securely fixed to the cover plate 10, thereby ensuring the stability of the connection between the insulating member 50 and the cover plate 10, which helps to improve the overall stability of the top cover assembly 100.

[0068] It is understandable that in some other embodiments, the positioning hole 12 may be a polygonal hole, an elliptical hole, etc., and the present application does not impose any limitation on this.

[0069] In a specific embodiment, the inner sidewall of the positioning hole 12 is inclined relative to the centerline of the positioning hole 12, and the inclination angle of the inner sidewall of the positioning hole 12 relative to the centerline of the positioning hole 12 is in the range of [2, 8] degrees. By inclining the inner sidewall of the positioning hole 12 relative to the centerline of the positioning hole 12 in the range of [2, 8] degrees, the torsional and tensile strength of the conductive member 30 in the assembled top cover assembly 100 is increased, thereby improving the stability of the conductive member 30 on the cover plate 10.

[0070] More specifically, the opening of the positioning hole 12 is located on the side of the cover plate 10 facing the first insulating portion 51. The positioning hole 12 is a tapered hole, and its radial dimension gradually increases from the side of the cover plate 10 facing the first insulating portion 51 to the side of the cover plate 10 facing the third insulating portion 53. The taper of the positioning hole 12 is in the range of [2, 8] degrees. The tapered positioning hole 12 improves the torsional and tensile resistance of the conductive member 30 in the assembled top cover assembly 100, thereby improving the stability of the conductive member 30 on the cover plate 10.

[0071] It should be understood that the positioning hole 12 includes but is not limited to a conical hole, a truncated cone hole, a pyramidal hole, a prism-shaped hole, etc., and this application does not impose any limitation on this.

[0072] In one embodiment, there are two positioning holes 12, both of which are located on the side of the cover plate 10 facing the first insulating portion 51. It is understood that in some other embodiments, the number of positioning holes 12 may be one, three, etc., and this application is not limited thereto. It is understood that in some other embodiments, one of the two positioning holes 12 is located on the side of the cover plate 10 facing the first insulating portion 51, and the other is located on the side of the cover plate 10 facing the third insulating portion 53, and this application is not limited thereto.

[0073] It should be understood that when the top cover assembly 100 is applied to a battery, since the battery has a positive electrode and a negative electrode, a conductive member 30 and an insulating member 50 are provided at the positive electrode of the battery, and a conductive member 30 and an insulating member 50 are provided at the negative electrode of the battery. In other words, two conductive members 30 are provided through the cover plate 10, and the two conductive members 30 are respectively fixed, separated, insulated, and sealed by two insulating members 50. The assembly and connection relationship between the two conductive members 30 and the two insulating members 50 is similar and will not be described in detail here.

[0074] 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 for a battery, characterized in that: include: a cover plate having a through hole; A conductive member is inserted into the through hole, and a portion of the conductive member is located on one side of the cover plate along the thickness direction, and another portion of the conductive member is located on the other side of the cover plate along the thickness direction; The insulating member is used to isolate the conductive member and the cover plate, and to fixedly connect the cover plate and the conductive member.

2. The top cover assembly according to claim 1, characterized in that The conductive member includes an integrally formed first connecting member, a second connecting member and a third connecting member, wherein the second connecting member is connected between the first connecting member and the third connecting member; the first connecting member is arranged on one side of the cover plate along the thickness direction, the second connecting member is passed through the through hole, and the third connecting member is arranged on the other side of the cover plate along the thickness direction.

3. The top cover assembly according to claim 2, characterized in that: The first connecting member is a plate-shaped structure.

4. The top cover assembly according to claim 2, characterized in that: The insulating member is sealed between the cover plate and the first connecting member, and the insulating member is also sealed between the cover plate and the second connecting member.

5. The top cover assembly according to claim 2, characterized in that: The conductive member further includes a transition member, which is connected between the second connector and the third connector; wherein the transition member is inclined relative to both the second connector and the third connector; and / or, along a direction perpendicular to the extension of the conductive member, an area of ​​a cross section of the second connector is smaller than an area of ​​a cross section of the third connector, and along a direction perpendicular to the end of the transition member close to the second connector to an end of the transition member close to the third connector, an area of ​​the cross section of the transition member tends to increase.

6. The top cover assembly according to claim 2, characterized in that: The insulating member includes a first insulating portion and a second insulating portion which are connected to each other; the first insulating portion is located between the cover plate and the first connecting member; the second insulating portion is located in the through hole and between the inner side wall of the through hole forming the cover plate and the second connecting member.

7. The top cover assembly according to claim 6, characterized in that: The insulating member further includes a third insulating portion, which is arranged on a side of the cover plate facing away from the first connecting member.

8. The top cover assembly according to claim 7, characterized in that: The thickness of the first insulating portion is greater than or equal to 0.5 mm, the thickness of the second insulating portion is greater than or equal to 0.5 mm, and the thickness of the third insulating portion is greater than or equal to 0.5 mm.

9. The top cover assembly according to claim 2, characterized in that: The cover plate is provided with a positioning hole, and at least a part of the insulating member is received in the positioning hole.

10. The top cover assembly according to claim 9, characterized in that There are multiple positioning holes, and an opening of at least one positioning hole is arranged on a side of the cover plate facing the first connecting member.

11. The top cover assembly according to claim 9, characterized in that: The positioning hole is a blind hole.

12. The top cover assembly according to claim 9, characterized in that: The positioning hole is a circular hole; the depth of the positioning hole is in the range of [0.3, 1.0] mm; and / or the diameter of the positioning hole is in the range of [0.8, 2.0] mm.

13. The top cover assembly according to claim 9, characterized in that The inner side wall of the positioning hole is inclined relative to the hole center line of the positioning hole, and the range of the inclination angle of the inner side wall of the positioning hole relative to the hole center line is [2, 8] degrees.

14. The top cover assembly according to any one of claims 1 to 13, characterized in that: The insulating part is a nano injection molded part.

15. A battery, characterized in that: include: A top cover assembly as claimed in any one of claims 1 to 14.

16. An electrical equipment, characterized in that: include: The battery as claimed in claim 15.

Images