CN216015526U

CN216015526U - Button cell

Info

Publication number: CN216015526U
Application number: CN202121727460.6U
Authority: CN
Inventors: 金振东; 张淼; 李升高; 刘勇; 韩子勤
Original assignee: Springpower Technology Shenzhen Co Ltd
Current assignee: Springpower Technology Shenzhen Co Ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-03-11
Anticipated expiration: 2031-07-27

Abstract

The utility model belongs to the technical field of button cells, and relates to a button cell, which comprises a cover plate assembly, a pole core and a shell, wherein the shell is of a barrel-shaped structure with an opening at one end, the cover plate assembly comprises a cover plate body, a pole and an insulating sealing piece, the cover plate body is of a flat plate structure and is hermetically connected with the opening end of the shell, the cover plate body and the shell are enclosed to form a sealed cavity, the pole core is arranged in the sealed cavity, and the edge of the cover plate body protrudes out of the edge of the opening end of the shell. The utility model provides a button cell has changed the structure of half shell about the button cell in the past, utilizes the apron to add the structure of one end open-ended casing, has avoided the problem of insulating connecting piece occupation space in the half shell connection process about having improved energy density.

Description

Button cell

Technical Field

The utility model belongs to the technical field of button cells, and relates to a button cell.

Background

Button cell, which is a cell with the external dimension like a small button, generally has a larger diameter and a thinner thickness, and the button cell has a smaller body size, so it is widely used in various miniature electronic products.

The existing button cell adopts a structure of an upper half shell and a lower half shell, an insulating connecting piece is usually required to be arranged in a combined gap of the upper half shell and the lower half shell, and a part of energy density of a winding core is lost due to the volume of the insulating connecting piece.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the button cell is provided aiming at the problem that the core loses part of energy density due to the existence of an insulating connecting piece in the existing button cell.

In order to solve the technical problem, the utility model provides a button cell. The button cell comprises a cover plate assembly, a pole core and a shell, wherein the shell is of a barrel-shaped structure with one open end, the cover plate assembly comprises a cover plate body, a pole and an insulating sealing element, the cover plate body is of a flat plate structure and is connected to the open end of the shell in a sealing manner, the cover plate body and the shell are enclosed to form a sealing cavity, the pole core is arranged in the sealing cavity, and the edge of the cover plate body protrudes out of the edge of the open end of the shell;

the middle part of apron body is provided with utmost point post mounting hole, insulating sealing member is hollow tube-shape, insulating sealing member's outer lane pressure equipment is in the utmost point post mounting hole, utmost point post pressure equipment is in insulating sealing member's the inner circle, the outer end of utmost point post stretches out the apron body, utmost point post inner stretches into in the sealed chamber and with utmost point core is connected.

Optionally, the pole piece includes the pole piece body, follows the anodal utmost point ear of drawing forth one side of pole piece body and follow the negative pole utmost point ear of drawing forth the opposite side of pole piece body, the inner of utmost point post is connected with the anodal utmost point ear of pole piece, the negative pole utmost point ear of pole piece is connected at the diapire inboard of casing.

Optionally, the pole piece further comprises a sealant, and the sealant covers the outer peripheral surface of the pole piece body.

Optionally, the longitudinal section of utmost point post is "worker" style of calligraphy, be provided with first annular on the outer peripheral face of utmost point post, the longitudinal section of insulating seal spare is "worker" style of calligraphy, be provided with the second annular on the outer peripheral face of insulating seal spare, the second annular card is in the edge of utmost point post mounting hole, first annular card is in on the inner race of insulating seal spare.

Optionally, the positive electrode tab is welded and fixed with the inner end of the electrode post.

Optionally, the negative electrode tab is welded and fixed with the bottom wall of the shell.

Optionally, the cover plate body is welded and fixed on the end face of the opening end of the shell.

Optionally, the pole piece is a jellyroll.

The button cell provided by the embodiment of the utility model comprises a cover plate assembly, a pole core and a shell, wherein the shell is of a barrel-shaped structure with one open end, the cover plate assembly comprises a cover plate body, a pole column and an insulating sealing piece, the cover plate body is of a flat plate structure and is connected to the open end of the shell in a sealing mode, the cover plate body and the shell are enclosed to form a sealing cavity, the pole core is arranged in the sealing cavity, and the edge of the cover plate body protrudes out of the edge of the open end of the shell. The utility model provides a button cell has changed the structure of half shell about the button cell in the past, utilizes the apron to add the structure of one end open-ended casing, has avoided the problem of insulating connecting piece occupation space in the half shell connection process about having improved energy density.

Drawings

Fig. 1 is a schematic diagram of a button cell provided in an embodiment of the utility model;

fig. 2 is a cross-sectional view of a button cell provided by an embodiment of the utility model.

The reference numerals in the specification are as follows:

1. a cover plate assembly; 11. a cover plate body; 12. an insulating seal; 13. a pole column;

2. a pole piece; 21. a pole piece body; 22. a positive electrode tab; 23. a negative electrode tab;

3. a housing.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

As shown in fig. 1 to 2, a button cell provided in an embodiment of the present invention includes a cover plate assembly 1, a pole piece 2, and a casing 3, where the casing 3 is a barrel-shaped structure with an open end, the cover plate assembly 1 includes a cover plate body 11, a pole 13, and an insulating sealing member 12, the cover plate body 11 is a flat plate structure, the cover plate body 11 is hermetically connected to the open end of the casing 3, the cover plate body 11 and the casing 3 surround to form a sealed cavity, the pole piece 2 is disposed in the sealed cavity (not shown in the figure), and an edge of the cover plate body 11 protrudes out of an edge of the open end of the casing 3.

The middle part of apron body 11 is provided with utmost point post 13 mounting hole, insulating seal 12 is hollow tube-shape, the outer lane pressure equipment of insulating seal 12 is in the utmost point post 13 mounting hole, utmost point post 13 pressure equipment is in the inner circle of insulating seal 12, the outer end of utmost point post 13 stretches out apron body 11, utmost point post 13 inner stretches into in the sealed chamber and with utmost point core 2 is connected.

In an embodiment, the pole core 2 includes a pole core body 21, a positive electrode tab 22 led out from one side of the pole core body 21, and a negative electrode tab 23 led out from the other side of the pole core body 21, the inner end of the pole 13 is connected to the positive electrode tab 22 of the pole core 2, and the negative electrode tab 23 of the pole core 2 is connected to the inner side of the bottom wall of the casing 3.

In an embodiment, the pole core 2 further includes a sealant (not shown), and the sealant covers the outer peripheral surface of the pole core body 21.

In one embodiment, the longitudinal section of the pole post 13 is "i" shaped, a first annular groove (not shown) is formed on the outer circumferential surface of the pole post 13, the longitudinal section of the insulating seal member 12 is "i" shaped, a second annular groove (not shown) is formed on the outer circumferential surface of the insulating seal member 12, the second annular groove is clamped at the edge of the mounting hole of the pole post 13, and the first annular groove is clamped on the inner ring of the insulating seal member 12.

In one embodiment, the positive tab 22 is welded to the inner end of the pole 13.

In one embodiment, the negative electrode tab 23 is welded to the bottom wall of the housing 3.

In an embodiment, the cover plate body 11 is welded and fixed on the open end face of the housing 3.

In one embodiment, the pole piece 2 is a jellyroll.

According to the button cell provided by the embodiment of the utility model, the shell is of a barrel-shaped structure with one open end, the cover plate assembly comprises a cover plate body, a pole and an insulating sealing element, the cover plate body is of a flat plate structure and is connected to the open end of the shell in a sealing manner, the cover plate body and the shell are encircled to form a sealing cavity, the pole is arranged in the sealing cavity, and the edge of the cover plate body protrudes out of the edge of the open end of the shell. The utility model provides a button cell has changed the structure of half shell about the button cell in the past, utilizes the apron to add the structure of one end open-ended casing, has avoided the problem of insulating connecting piece occupation space in the half shell connection process about having improved energy density.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A button cell is characterized by comprising a cover plate assembly, a pole core and a shell, wherein the shell is of a barrel-shaped structure with one open end, the cover plate assembly comprises a cover plate body, a pole and an insulating sealing piece, the cover plate body is of a flat plate structure and is connected to the open end of the shell in a sealing mode, the cover plate body and the shell are enclosed to form a sealing cavity, the pole core is arranged in the sealing cavity, and the edge of the cover plate body protrudes out of the edge of the open end of the shell;

2. The button cell according to claim 1, wherein the pole core comprises a pole core body, a positive electrode tab led out from one side of the pole core body, and a negative electrode tab led out from the other side of the pole core body, the inner end of the pole is connected with the positive electrode tab of the pole core, and the negative electrode tab of the pole core is connected to the inner side of the bottom wall of the casing.

3. The button cell according to claim 2, wherein the core further comprises a sealant, and the sealant covers the outer peripheral surface of the core body.

4. The button cell according to claim 1, wherein the longitudinal section of the pole is i-shaped, a first annular groove is formed in the outer peripheral surface of the pole, the longitudinal section of the insulating sealing member is i-shaped, a second annular groove is formed in the outer peripheral surface of the insulating sealing member, the second annular groove is clamped at the edge of the pole mounting hole, and the first annular groove is clamped on the inner ring of the insulating sealing member.

5. The button cell according to claim 2, wherein the positive tab is welded to the inner end of the pole.

6. The button cell battery as recited in claim 2, wherein the negative tab is welded to the bottom wall of the casing.

7. The button cell according to claim 1, wherein the cover body is welded and fixed on the open end face of the case.

8. The button cell according to claim 1, wherein the pole core is a roll core.