CN211404603U

CN211404603U - Button cell

Info

Publication number: CN211404603U
Application number: CN202020424923.0U
Authority: CN
Inventors: 曾玉祥; 王永旺
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2020-09-01
Anticipated expiration: 2030-03-27

Abstract

The utility model provides a button cell, which comprises a shell, a sealing ring, a first end cover, a second end cover and a cell, wherein the shell is a cavity with openings at two ends, and the first end cover is welded and fixed with one end of the shell to seal the first opening of the shell; the sealing ring is arranged between the shell and the second end cover and is respectively and fixedly connected with the shell and the second end cover so as to be matched with the second end cover to seal the second opening of the shell; the battery cell is arranged in the shell; the battery cell comprises a battery cell body, a first tab and a second tab, wherein one end of the first tab is electrically connected with the battery cell body, and the other end of the first tab is electrically connected with the first end cover; one end of the second tab is electrically connected with the battery cell body, and the other end of the second tab is electrically connected with the second end cover. The embodiment of the utility model provides a need not to adopt the structure that upper and lower casing is connected to the process flow of equipment processing has been simplified.

Description

Button cell

Technical Field

The utility model relates to the technical field of batteries, especially, relate to a button cell.

Background

Button cells are widely used, mainly in wearable products, electronic products, medical products and other fields, so the packaging problem is very important.

The mode that present button cell mainly adopted the casing to wrap up electric core, because electric core need set up inside the casing, so the casing need adopt casing and lower casing to pass through sealed glue connection's mode and form, in order to guarantee the stability of encapsulation, current button cell mainly adopts the structure of placing upper housing part partial volume in the casing down to area of contact between the casing about the increase, and the technological process of the equipment processing of this kind of button cell structure is more complicated.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a button cell to solve the more complicated problem of process flow of current button cell equipment processing.

The embodiment of the utility model provides a button cell, including casing, sealing washer, first end cover, second end cover and electric core, the casing is the cavity that has both ends open-ended, first end cover with the one end welded fastening of casing, in order to seal the first opening of casing; the sealing ring is arranged between the shell and the second end cover and is respectively and fixedly connected with the shell and the second end cover so as to be matched with the second end cover to seal the second opening of the shell;

the battery cell is arranged in the shell; the battery cell comprises a battery cell body, a first tab and a second tab, wherein one end of the first tab is electrically connected with the battery cell body, and the other end of the first tab is electrically connected with the first end cover; one end of the second tab is electrically connected with the battery cell body, and the other end of the second tab is electrically connected with the second end cover.

Optionally, the sealing ring is fixedly connected to the housing and the second end cap by welding, injection molding or riveting.

Optionally, the portable terminal further comprises a conductive member, the conductive member is disposed in the housing, and one end of the conductive member passes through the second opening and is fixedly connected to the second end cap;

one end of the second tab is connected with the other end of the conductive piece so as to be electrically connected with the second end cover through the conductive piece.

Optionally, the conductive piece is arranged in a cylinder, and the battery cell body is arranged around the conductive piece.

Optionally, the first tab and the second tab are disposed at the same side of the cell body, and are both located between the first end cap and the cell body.

Optionally, an insulating adhesive paper is arranged between the first tab and the second tab.

Optionally, the sealing ring is made of an insulating material.

Optionally, the housing, the first end cap and the second end cap are made of conductive materials.

The embodiment of the utility model provides a through with first end cap with the one end welded fastening of casing, in order to seal the first opening of casing, with the sealing washer set up in the casing with between the second end cap, and respectively with the casing reaches second end cap fixed connection, in order to cooperate the second end cap is sealed the second opening of casing to need not to adopt the structure that the upper and lower casing is connected, and need not to arrange upper housing part partial volume in lower casing for promoting encapsulation stability, in order to increase the connection area between the upper and lower casing, and then simplified button cell equipment processing's process flow.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic cross-sectional view of a button cell provided in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1, an embodiment of the present invention provides a button cell, including a casing 10, a sealing ring 20, a first end cap 30, a second end cap 40, and a battery cell, where the casing 10 is a cavity with two open ends, and the first end cap 30 is welded and fixed to one end of the casing 10 to seal the first opening of the casing 10; the sealing ring 20 is disposed between the housing 10 and the second end cap 40, and is respectively fixedly connected to the housing 10 and the second end cap 40, so as to cooperate with the second end cap 40 to seal the second opening of the housing 10;

the battery cell is arranged in the casing 10; the battery cell comprises a battery cell body 50, a first tab 51 and a second tab 52, wherein one end of the first tab 51 is electrically connected with the battery cell body 50, and the other end is electrically connected with the first end cap 30; one end of the second tab 52 is electrically connected to the cell body 50, and the other end is electrically connected to the second end cap 40.

In order to enhance the sealing performance of the button cell and to facilitate the processing, the housing 10 may be substantially cylindrical. Meanwhile, the size of the first opening may be larger than that of the second opening. In other words, the end surface of the housing 10 at the second opening may be provided with an annular flange, which is adapted to the sealing ring 20 and is fixedly connected to the sealing ring 20.

The battery cell body 50 is wound in the accommodating cavity in a winding manner, and includes a positive winding and a negative winding. An insulating tape can be arranged between the positive winding and the negative winding to prevent short circuit.

In the embodiment of the present invention, the first tab 51 may be a negative tab, and is used for electrically connecting the battery cell body 50 and the first end cap 30; the second tab 52 may be a positive tab, and is used to electrically connect the cell body 50 and the second end cap 40.

Specifically, the connection mode between the first tab 51 and the first end cap 30 may be set according to actual requirements. In the embodiment of the present invention, the first tab 51 may be connected to the first end cap 30 by welding, or may be connected by bonding or other methods. Accordingly, the second pole ear 52 and the second end cap 40 may be connected by welding or bonding.

The embodiment of the utility model provides a through with first end cover 30 with the one end welded fastening of casing 10, in order to seal the first opening of casing 10, with sealing washer 20 set up in casing 10 with between the second end cover 40, and respectively with casing 10 reaches second end cover 40 fixed connection, in order to cooperate second end cover 40 seals the second opening of casing 10 to the structure that casing 10 is connected about need not to adopt, and need not to go up casing 10 part holding in casing 10 down for promoting encapsulation stability, with the area of connection between the casing 10 about the increase, and then simplified button cell assembly process's process flow.

Further, the sealing ring 20 may be fixedly connected to the housing 10 and the second end cap 40 according to actual requirements. In the embodiment of the present invention, the sealing ring 20 is fixedly connected to the housing 10 and the second end cap 40 by welding, injection molding or riveting.

Further, the button cell may further include a conductive member 60, the conductive member 60 is disposed in the casing 10, and one end of the conductive member 60 passes through the second opening and is fixedly connected to the second end cap 40;

one end of the second tab 52 is connected to the other end of the conductive member 60 to be electrically connected to the second end cap 40 through the conductive member 60.

Specifically, the conductive member 60 may be disposed in a cylindrical shape, and the battery cell body 50 is disposed around the conductive member 60. The first tab 51 and the second tab 52 may be disposed on the same side of the cell body 50, and both are located between the first end cap 30 and the cell body 50.

The embodiment of the utility model provides a through setting up electrically conductive 60, second utmost point ear 52 is connected with above-mentioned second end cover 40 electricity through electrically conductive 60 to make above-mentioned first utmost point ear 51 and above-mentioned second utmost point ear 52 can set up in the homonymy of above-mentioned electricity core body 50, avoided setting up above-mentioned second utmost point ear 52 in the opposite side and directly can destroy seal structure's problem when being connected with above-mentioned second end cover 40, promoted above-mentioned button cell's reliability.

Further, in order to prevent short circuit, an insulating adhesive paper 70 may be disposed between the first tab 51 and the second tab 52. The sealing ring 20 may be made of an insulating material.

Further, the housing 10, the first end cap 30 and the second end cap 40 are made of a conductive material, and may be made of a conductive metal such as zinc or stainless steel.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A button cell is characterized by comprising a shell, a sealing ring, a first end cover, a second end cover and a cell, wherein the shell is a cavity with openings at two ends, and the first end cover is welded and fixed with one end of the shell so as to seal the first opening of the shell; the sealing ring is arranged between the shell and the second end cover and is respectively and fixedly connected with the shell and the second end cover so as to be matched with the second end cover to seal the second opening of the shell;

2. The button cell according to claim 1, wherein the sealing ring is fixedly connected to the housing and the second end cap by welding, injection molding or riveting.

3. The button cell battery according to claim 1, further comprising a conductive member, wherein the conductive member is disposed in the housing, and one end of the conductive member passes through the second opening and is fixedly connected to the second end cap;

4. The button cell battery according to claim 3, wherein the conductive member is cylindrical, and the cell body is arranged around the conductive member.

5. The button cell battery according to claim 1, wherein the first tab and the second tab are disposed on the same side of the cell body and are both located between the first end cap and the cell body.

6. The button cell according to claim 1, wherein an insulating gummed paper is disposed between the first tab and the second tab.

7. The button cell according to claim 1, wherein the sealing ring is made of an insulating material.

8. The button cell according to claim 1, wherein the housing, the first end cap and the second end cap are made of conductive material.