CN217062303U

CN217062303U - Secondary cell top cap subassembly and secondary cell

Info

Publication number: CN217062303U
Application number: CN202220482159.1U
Authority: CN
Inventors: 张方超; 吴清泉; 赵艺惠
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-26
Anticipated expiration: 2032-03-07

Abstract

The embodiment of the utility model provides a secondary battery top cap subassembly and secondary battery belongs to secondary battery technical field. The secondary battery top cap includes top cap body, insulating part and utmost point post. The top cover body comprises a first wall surface and a second wall surface which are oppositely arranged. The top cover body is provided with a mounting hole, and the mounting hole penetrates through the first wall surface and the second wall surface. The insulating part sets up in the mounting hole, and the one end of insulating part stretches out first wall, and the other end stretches out the second wall, is provided with the fixed orifices along the direction of height of insulating part on the insulating part. The utmost point post sets up in the fixed orifices, insulating part be used for the utmost point post with it is insulating between the top cap body. The insulating member is integrally formed. Thereby more facilitating the assembly of the secondary battery.

Description

Secondary cell top cap subassembly and secondary cell

Technical Field

The utility model relates to a secondary field particularly, relates to a secondary cell top cap subassembly and secondary cell.

Background

A secondary battery is also called a rechargeable battery or a secondary battery, and refers to a battery that can be continuously used by activating an active material by charging after the battery is discharged.

In order to realize sealing and insulation between the pole and the top cover, a plurality of insulating rings and sealing rings are generally arranged between the top cover and the pole of the conventional secondary battery, however, the arrangement of the insulating rings and the sealing rings can lead the assembly of the pole to be complicated, so that the assembly efficiency of the secondary battery is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a secondary cell top cap subassembly and secondary cell, it can let the top cap can be more convenient integrated at the top cap body, makes the assembly of utmost point post more convenient and swift.

The embodiment of the utility model is realized like this:

in a first aspect, the present invention provides a secondary battery top cap assembly, which comprises a top cap body, an insulating member and a pole;

the top cover body comprises a first wall surface and a second wall surface which are arranged oppositely, and a mounting hole is formed in the top cover body and penetrates through the first wall surface and the second wall surface;

the insulating piece is arranged in the mounting hole, one end of the insulating piece extends out of the first wall surface, the other end of the insulating piece extends out of the second wall surface, and a fixing hole is formed in the insulating piece along the height direction of the insulating piece;

the pole is arranged in the fixing hole, and the insulating part is used for insulating the pole from the top cover body;

the insulating member is integrally formed.

In an optional implementation manner, the pole includes a pole portion and a leading portion, the insulating member includes a first insulating portion and a second insulating portion, the first insulating portion and the second insulating portion are integrally formed, the second insulating portion is disposed in the mounting hole, one end of the first insulating portion extends out of the first wall surface, the other end of the first insulating portion extends out of the second wall surface, the mounting hole is disposed in the second insulating portion, the leading portion is disposed in the fixing hole, and the first insulating portion is located between the top cover body and the pole portion.

In an optional embodiment, the insulating member is formed between the top cover body and the pole by injection molding, so that both the pole and the top cover body are connected with the insulating member.

In an alternative embodiment, the secondary battery top cover assembly further includes an insulator, the insulator is mounted on the second wall surface, a through hole is formed in the insulator, and one end of the insulator, which is close to the second bottom wall, extends into the through hole.

In an alternative embodiment, the end of the insulator extending into the through hole is flush with the bottom wall of the insulator.

In an alternative embodiment, the first insulating portion is in the form of a sheet, and the first insulating portion has a first surface and a second surface that are disposed opposite to each other, the first surface abutting against the pole portion, and the second surface abutting against the top cover body.

In an alternative embodiment, the first insulating portion is provided with a fixing groove, the fixing groove is communicated with the fixing hole, and the pole portion is at least partially received in the fixing groove.

In an alternative embodiment, the first wall surface is concavely provided with a mounting groove, the mounting groove is communicated with the mounting hole, and the insulating piece is at least partially accommodated in the mounting groove.

In an alternative embodiment, the pole section and the lead section are integrally formed.

In a second aspect, the present invention provides a secondary battery, wherein the secondary battery comprises a casing, an electric core and any one of the foregoing embodiments, the electric core is accommodated in the casing, the secondary battery top cover assembly covers the casing, and the pole is electrically connected to the electric core.

The embodiment of the utility model provides a secondary cell top cap subassembly and secondary cell's beneficial effect includes:

this application is through setting up the mounting hole on the top cap body, with installing in the mounting hole of insulating part to make the one end of insulating part stretch out first wall, the second wall is stretched out to the other end. Set up the fixed orifices on the insulating part, establish utmost point post in the fixed orifices to just can realize insulating and sealed between utmost point post and the top cap body through the insulating part. The insulating part which is integrally formed is more convenient to assemble.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded schematic view of a secondary battery top cap assembly according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a secondary battery top cap assembly according to an embodiment of the present invention.

100-secondary battery top cover assembly; 110-a cap body; 111-a first wall; 113-a second wall; 115-mounting holes; 117-mounting groove; 130-an insulator; 131-fixing holes; 133 — a first insulating portion; 135-a second insulation; 137-first side; 138-a second face; 139-a fixation groove; 150-pole column; 151-pole part; 153-a lead-through; 170-an insulator; 171-a through hole.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Referring to fig. 1, the present embodiment provides a secondary battery. The secondary battery comprises a shell (not shown), a battery core (not shown) and a secondary battery top cover assembly 100, wherein the battery core is accommodated in the shell, and the secondary battery top cover assembly 100 covers the shell.

Referring to fig. 1 and 2, in the present embodiment, the secondary battery top cap assembly 100 includes a top cap body 110, an insulating member 130, and a terminal post 150; the top cover body 110 comprises a first wall surface 111 and a second wall surface 113 which are oppositely arranged, a mounting hole 115 is formed in the top cover body 110, and the mounting hole 115 penetrates through the first wall surface 111 and the second wall surface 113; the insulating member 130 is disposed in the mounting hole 115, one end of the insulating member 130 extends out of the first wall surface 111, and the other end of the insulating member 130 extends out of the second wall surface 113, and a fixing hole 131 is disposed on the insulating member 130 along a height direction of the insulating member 130; the post 150 is disposed in the fixing hole 131, and the insulating member 130 is used for insulating the post 150 from the top cap body 110; the insulating member 130 is integrally formed.

In the present embodiment, the mounting hole 115 is formed in the top cover body 110, the insulating member 130 is mounted in the mounting hole 115, and one end of the insulating member 130 protrudes from the first wall surface 111 and the other end protrudes from the second wall surface 113. The insulating member 130 is provided with a fixing hole 131, and the post 150 is disposed in the fixing hole 131, so that the insulating member 130 can insulate and seal the post 150 from the cap body 110. The use of an integrally formed insulator 130 facilitates assembly.

In this embodiment, the pole 150 includes a pole portion 151 and a leading portion 153, the insulating member 130 includes a first insulating portion 133 and a second insulating portion 135, the first insulating portion 133 and the second insulating portion 135 are integrally formed, the second insulating portion 135 is disposed in the mounting hole 115, one end of the first insulating portion 133 extends out of the first wall surface 111, the other end of the first insulating portion extends out of the second wall surface 113, the mounting hole 131 is disposed in the second insulating portion 135, the leading portion 153 is disposed in the fixing hole 131, and the first insulating portion 133 is located between the top cover body 110 and the pole portion 151. The lead part 153 is used for connecting with a battery cell, and the pole part 151 is used for connecting with a bus bar or an external conductor.

In this embodiment, the insulating member 130 is formed between the top cap body 110 and the terminal post 150 by injection molding, so that the terminal post 150 and the top cap body 110 are both connected to the insulating member 130.

Referring to fig. 1 and fig. 2, in the embodiment, generally, the terminal post 150 is assembled to the preset position of the top cover after the top cover body 110 and the terminal post 150 are formed, so that an insulating space for insulation is formed between the top cover body 110 and the terminal post 150, and then plastic is injected between the top cover body 110 and the terminal post 150 in an injection molding manner, the injected plastic forms the insulating member 130, because the insulating member 130 is formed by injection molding in the later stage, the insulating member 130 can be directly bonded with the top cover body 110 and the terminal post 150 after injection molding, so that the assembling time of the insulating member 130 is saved, and the assembling of the secondary battery is more convenient and faster.

Of course, in other embodiments of the present application, the top cap body 110, the pole 150 and the insulating member 130 may be processed by separate processing, and finally the insulating member 130 is assembled between the pole 150 and the top cap body 110. Specifically, the insulating member 130 may be mounted in the mounting hole 115 of the top cap body 110 by means of gluing, and the pole 150 may be mounted in the fixing hole 131 by means of gluing.

In this embodiment, the secondary battery top cover assembly 100 further includes an insulator 170, the insulator 170 is mounted on the second wall surface 113, a through hole 171 is formed in the insulator 170, and one end of the insulator 130 close to the second bottom wall extends into the through hole 171. The insulator 170 is arranged to cover the second wall surface 113 of the top cover, so that the top cover can be insulated from the battery cell, and one end of the insulating member 130 close to the second bottom wall extends into the through hole 171, so that the battery cell can be prevented from being short-circuited with the pole 150.

In this embodiment, one end of the insulating member 130 extending into the through hole 171 is flush with the bottom wall of the insulator 170. Having the end of the insulator 130 flush with the bottom of the insulator 170 can prevent the cell from contacting the post 150.

With reference to fig. 1 and fig. 2, in the present embodiment, the first insulating portion 133 is in a sheet shape, the first insulating portion 133 has a first surface 137 and a second surface 138 that are disposed opposite to each other, the first surface 137 abuts against the pole portion 151, and the second surface 138 abuts against the top cover body 110. The first insulating portion 133 is formed in a sheet shape, so that the pole portion 151 is more insulated from the top cap body 110.

In this embodiment, the first insulating portion 133 is provided with a fixing groove 139, the fixing groove 139 is communicated with the fixing hole 131, and the pole portion 151 is at least partially received in the fixing groove 139. The fixing groove 139 is configured to partially mount the pole portion 151 in the fixing groove 139, so that the pole 150 can be limited by the fixing groove 139 to prevent the pole 150 from rotating relative to the insulating member 130.

In this embodiment, the fixing groove 139 has a rectangular shape. In other embodiments of the present application, the fixing groove 139 may have a polygonal shape, so that the pole 150 can be restricted from rotating by the pole part 151 received in the fixing groove 139 abutting against the pole part 151.

With reference to fig. 1 and fig. 2, in the present embodiment, a mounting groove 117 is concavely formed on the first wall surface 111, the mounting groove 117 is communicated with the mounting hole 115, and the insulating member 130 is at least partially accommodated in the mounting groove 117. By providing the mounting groove 117 at the top of the top cap body 110, the insulating member 130 is at least partially disposed in the mounting groove 117, so that the insulating member 130 can be prevented from rotating with respect to the top cap body 110.

In the present embodiment, the mounting groove 117 is rectangular in shape. In other embodiments of the present application, the mounting groove 117 may have a polygonal shape, such that the insulation member 130 received in the blind rotation groove may abut against the pole portion 151 to limit the rotation of the pole 150.

In the present embodiment, the pole portion 151 and the lead portion 153 are integrally formed. The pole part 151 and the lead part 153 are integrally formed to reduce the number of assembling steps, so that the secondary battery can be more conveniently mounted.

Of course, in other embodiments of the present disclosure, the pole portion 151 and the lead portion 153 are formed by separate molding and then detachably assembled together by bolts or the like.

The embodiment of the utility model provides a theory of operation and beneficial effect of secondary cell top cap subassembly 100 and secondary cell include:

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The secondary battery top cover assembly is characterized by comprising a top cover body, an insulating part and a pole;

the insulating part is integrally formed.

2. The secondary battery top cap assembly of claim 1, wherein the pole comprises a pole portion and a lead portion, the insulating member comprises a first insulating portion and a second insulating portion, the first insulating portion and the second insulating portion are integrally formed, the second insulating portion is disposed in the mounting hole, one end of the first insulating portion extends out of the first wall surface, the other end of the first insulating portion extends out of the second wall surface, the fixing hole is disposed in the second insulating portion, the lead portion is disposed in the fixing hole, and the first insulating portion is located between the top cap body and the pole portion.

3. The secondary battery top cap assembly according to claim 1 or 2, wherein the insulating member is injection-molded between the top cap body and the post, so that both the post and the top cap body are connected to the insulating member.

4. The secondary battery top cap assembly according to claim 1 or 2, further comprising an insulator mounted to the second wall surface, wherein a through hole is provided in the insulator, and an end of the insulator near the second wall surface extends into the through hole.

5. The secondary battery top cap assembly according to claim 4, wherein an end of the insulating member protruding into the through-hole is flush with a bottom wall of the insulator.

6. The secondary battery top cap assembly of claim 2, wherein the first insulating portion is sheet-like in shape and has first and second oppositely disposed surfaces, the first surface abutting the pole section and the second surface abutting the top cap body.

7. The secondary battery top cap assembly according to claim 2, wherein a fixing groove is provided on the first insulating portion, the fixing groove being in communication with the fixing hole, the pole portion being at least partially received in the fixing groove.

8. The secondary battery top cap assembly according to claim 2, wherein the first wall surface is concavely provided with a mounting groove, the mounting groove is communicated with the mounting hole, and the insulating member is at least partially received in the mounting groove.

9. The secondary battery top cap assembly of claim 2, wherein the pole portion and the lead portion are integrally formed.

10. A secondary battery, comprising a housing, a cell and the secondary battery cap assembly of any one of claims 1-9, wherein the cell is accommodated in the housing, the secondary battery cap assembly covers the housing, and the post is electrically connected to the cell.