CN211265527U

CN211265527U - Button cell

Info

Publication number: CN211265527U
Application number: CN202020380035.3U
Authority: CN
Inventors: 彭宁; 谢斌
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-08-14
Anticipated expiration: 2030-03-23

Abstract

The utility model provides a button cell, which comprises a shell and a cell, wherein the shell comprises a first shell and a second shell, and sealant is arranged between the first shell and the second shell to connect the first shell and the second shell in an insulating and sealing way; the first shell is provided with a first opening, the second shell is provided with a second opening, the first shell penetrates through the second opening, and part of the first shell is accommodated in the second shell; the first shell and the second shell are enclosed to form an accommodating cavity, the accommodating cavity is used for accommodating the battery cell, and the first opening is located in the accommodating cavity; a bulge is arranged between the first shell and the second shell and is positioned at the joint of the first shell and the second shell. The embodiment of the utility model provides a through increasing first casing and second casing and sealed area of contact between the glue to restricted the relative activity between first casing and the second casing, promoted the stability of encapsulation.

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 carry out the parcel to electric core, because electric core need set up inside the casing, so the casing need adopt casing and lower casing connection's mode to form to can lead to the corresponding decline of stability of casing, have the risk of weeping. Therefore, the prior art has the problem of poor stability of the package.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a button cell to there is the relatively poor problem of stability of encapsulation in solving prior art.

The embodiment of the utility model provides a button cell, including casing and electric core, the casing includes first casing and second casing, be provided with sealed glue between first casing and the second casing, with insulating sealing connection first casing with the second casing; the first shell is provided with a first opening, the second shell is provided with a second opening, the first shell penetrates through the second opening, and part of the first shell is accommodated in the second shell; the first shell and the second shell are enclosed to form an accommodating cavity, the accommodating cavity is used for accommodating the battery cell, and the first opening is located in the accommodating cavity; a bulge is arranged between the first shell and the second shell and is positioned at the joint of the first shell and the second shell.

Optionally, the inner wall of the first housing is recessed towards the outer wall to form a first protrusion, and the first protrusion is located at a connection position of the first housing and the second housing.

Optionally, an outer wall of the second housing is recessed towards an inner wall to form a second protrusion, and the second protrusion is located at a connection position of the first housing and the second housing.

Optionally, the first protrusion and the second protrusion are overlapped at a vertical projection part of the bottom surface of the second housing, and the bottom surface of the second housing is a surface of the second housing opposite to the second opening.

Optionally, the first protrusion and the second protrusion are both annular protrusions.

Optionally, an annular bottom plate is disposed on one side of the first shell, which is located at the first opening, and the first opening is a central hole of the annular bottom plate.

Optionally, a sealant is disposed between the annular bottom plate of the first housing and the bottom surface of the second housing.

Optionally, a third opening is disposed on the sealant, and the third opening is located between the annular bottom plate and the bottom surface of the second housing.

Optionally, the battery cell includes a first tab and a second tab, the first tab is connected to one side of the annular bottom plate close to the battery cell, and the second tab passes through the first opening and the third opening and is connected to the bottom surface of the second casing.

Optionally, the first opening and the third opening are both circular openings, and the diameter of the first opening is larger than that of the third opening.

The embodiment of the utility model provides a through set up the arch between first casing and second casing, the arch is located the position that first casing and second casing carry out to be connected through sealed glue to increased first casing and second casing and sealed area of contact between the glue, and restricted the relative activity between first casing and the second casing, promoted the stability of encapsulation.

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 structural diagram of a button cell according to an embodiment of the present invention;

fig. 2 is a schematic sectional view of the button cell of fig. 1 taken along the direction a-a.

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 to 2, an embodiment of the present invention provides a button cell, including a casing 10 and a cell 20, where the casing includes a first casing 11 and a second casing 12, and a sealant 30 is disposed between the first casing 11 and the second casing 12 to connect the first casing 11 and the second casing 12 in an insulating and sealing manner; the first housing 11 has a first opening 111, the second housing 12 has a second opening, the first housing 11 passes through the second opening, and a part of the first housing 11 is accommodated in the second housing 12; the first casing 11 and the second casing 12 enclose to form an accommodating cavity, the accommodating cavity is used for accommodating the battery cell 20, and the first opening 111 is located in the accommodating cavity; a protrusion 40 is disposed between the first housing 11 and the second housing 12, and the protrusion 40 is located at a connection position of the first housing 11 and the second housing 12.

In order to enhance the sealing performance of the button cell and facilitate the processing, the casing 10 may be substantially cylindrical, and the accommodating cavity defined by the first casing 11 and the second casing 12 may also be cylindrical. The battery cell 20 is wound in the accommodating cavity in a winding form, 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.

The first housing 11 and the second housing 12 may be fixedly connected by the sealant 30 according to actual requirements. In an embodiment, the sealant 30 may be disposed on the outer wall of the first housing 11, and then the first housing 11 is combined with the second housing 12. In another embodiment, the first housing 11 and the second housing 12 may be fixedly connected by the sealant 30 by integrally molding the sealant 30.

The protrusion 40 may be formed by bending the housing 10, or may be formed by welding or other methods.

The embodiment of the utility model provides a through set up protruding 40 between first casing 11 and the second casing 12, protruding 40 is located first casing 11 and second casing 12 and carries out the position of being connected through sealed glue 30 to increased the area of contact between first casing 11 and second casing 12 and sealed glue 30, and restricted the relative activity between first casing 11 and the second casing 12, promoted the stability of encapsulation.

Further, the inner wall of the first housing 11 may be recessed toward the outer wall to form a first protrusion 41, and the first protrusion 41 is located at the connection position of the first housing 11 and the second housing 12.

Accordingly, the outer wall of the second housing 12 may be recessed toward the inner wall to form a second protrusion 42, and the second protrusion 42 is located at the connection position of the first housing 11 and the second housing 12.

In order to make the first protrusion 41 and the second protrusion 42 perform a limiting and fastening function on the package structure, the vertical projection portions of the first protrusion 41 and the second protrusion 42 on the bottom surface of the second housing 12 are overlapped, so that the sealant 30 disposed between the first protrusion 41 and the second protrusion 42 is matched to limit the first housing 11 and the second housing 12, and the movable displacement between the first housing 11 and the second housing 12 caused by aging of the sealant 30 is reduced. The bottom surface of the second case 12 is a surface of the second case 12 facing the second opening.

Wherein, the number of the first protrusion 41 and the second protrusion 42 can be set according to actual requirements, in the embodiment of the present invention, the first protrusion 41 and the second protrusion 42 can exist in pairs and are all disposed at the connection position of the first housing 11 and the second housing 12.

Further, in order to provide a protrusion 40 matching the shapes of the first housing 11 and the second housing 12, the first protrusion 41 and the second protrusion 42 may be annular protrusions 40.

Further, in order to facilitate connection between the tabs of the battery cells 20 and the casing, an annular bottom plate is disposed on one side of the first opening 111 of the first casing 11, and the first opening 111 is a central hole of the annular bottom plate.

In order to make the connection between the first casing 11 and the second casing 12 more stable and facilitate the connection of the tabs of the battery cells 20, a sealant 30 may be disposed between the annular bottom plate of the first opening 111 in the first casing 11 and the bottom surface of the second casing 12.

The sealant 30 is provided with a third opening 31, and the third opening 31 is located between the annular bottom plate and the bottom surface of the second housing 12.

The battery cell 20 may include a first tab and a second tab, and the first tab and the second tab are used to electrically connect the battery cell 20 to the casing. The first tab is connected to a side of the annular bottom plate adjacent to the battery cell 20, and the second tab is connected to the bottom surface of the second case 12 through the first opening 111 and the third opening 31.

Specifically, the first opening 111 may be disposed in a circular shape, and the third opening 31 may be correspondingly disposed in a circular shape. In order to prevent the edge of the first opening 111 from contacting the second case ground to cause a short circuit, the diameter of the first opening 111 may be larger than the diameter of the third opening 31.

The first tab may be connected to the end surface of the first opening 111 as needed, and the first tab may be connected to the end surface of the first opening 111 by welding. Accordingly, the second tab may be connected to the bottom surface of the second housing 12 by welding.

Further, the above-mentioned material of sealed glue 30 can set up according to actual need the utility model provides an in order to prevent the short circuit, above-mentioned sealed glue 30 adopts insulating material to make.

The first housing 11 and the second housing 12 may be 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 comprises a shell and a cell, wherein the shell comprises a first shell and a second shell, and sealant is arranged between the first shell and the second shell to connect the first shell and the second shell in an insulating and sealing manner; the first shell is provided with a first opening, the second shell is provided with a second opening, the first shell penetrates through the second opening, and part of the first shell is accommodated in the second shell; the first shell and the second shell are enclosed to form an accommodating cavity, the accommodating cavity is used for accommodating the battery cell, and the first opening is located in the accommodating cavity;

the portable electronic device is characterized in that a protrusion is arranged between the first shell and the second shell and is positioned at the joint of the first shell and the second shell.

2. The button cell battery according to claim 1, wherein the inner wall of the first housing is recessed toward the outer wall to form a first protrusion, and the first protrusion is located at the connection position of the first housing and the second housing.

3. The button cell battery according to claim 2, wherein the outer wall of the second housing is recessed toward the inner wall to form a second protrusion, and the second protrusion is located at the connection position of the first housing and the second housing.

4. The button cell battery according to claim 3, wherein the first protrusion is partially overlapped with the second protrusion in a vertical projection on a bottom surface of the second casing, and the bottom surface of the second casing is a surface of the second casing opposite to the second opening.

5. The button cell according to claim 3, wherein the first and second protrusions are both annular protrusions.

6. The button cell according to claim 1, wherein the first housing is provided with an annular bottom plate at one side of a first opening, and the first opening is a central hole of the annular bottom plate.

7. The button cell battery according to claim 6, wherein a sealant is disposed between the annular bottom plate of the first casing and the bottom surface of the second casing.

8. The button cell according to claim 7, wherein a third opening is provided in the sealant, and the third opening is located between the annular bottom plate and the bottom surface of the second casing.

9. The button cell battery of claim 8, wherein the cell comprises a first tab and a second tab, the first tab is connected to the annular base plate, and the second tab passes through the first opening and the third opening and is connected to the bottom surface of the second casing.

10. The button cell according to claim 9, wherein the first and third openings are circular openings, and the diameter of the first opening is larger than the diameter of the third opening.