CN217239690U

CN217239690U - Button cell and electronic equipment

Info

Publication number: CN217239690U
Application number: CN202220734834.5U
Authority: CN
Inventors: 陈志勇
Original assignee: Guangdong Mic Power New Energy Co Ltd
Current assignee: Guangdong Mic Power New Energy Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-08-19
Anticipated expiration: 2032-03-28

Abstract

The utility model relates to a button cell and electronic equipment, button cell includes: the shell comprises a first half shell and a second half shell sleeved outside the first half shell; the battery cell is arranged in the shell and provided with a first end face and a second end face, the battery cell is provided with a through hole and a first lug, the first lug is arranged on the battery cell and is positioned on one side of the first end face, and the first lug is electrically connected with the first half shell; the second pole lug is arranged on the electric core and positioned on one side of the first end face, and at least part of the second pole lug is opposite to the through hole; the second half shell has the convex protruding structure of casing inside to the outside of second half shell forms first sunk structure, protruding structure extends in the through-hole, protruding structure with second pole ear electrical connection.

Description

Button cell and electronic equipment

Technical Field

The utility model relates to a button cell technical field, more specifically, the utility model relates to a button cell and electronic equipment.

Background

In the related art, in the assembly process of the button cell, the casing and the tab need to be welded. In the process of welding the tabs, welding is often required to be performed on the outside of the button cell. The tab is thin, and needs to be accurately positioned during welding to avoid insufficient welding, so that the welding difficulty is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a button cell and electronic equipment.

According to the utility model discloses a first aspect provides a button cell, and button cell includes:

the shell comprises a first half shell and a second half shell sleeved outside the first half shell;

the battery cell is arranged inside the shell and provided with a first end surface and a second end surface, the first end surface and the second end surface are arranged in a back-to-back manner, the battery cell is provided with a through hole penetrating through the first end surface and the second end surface, the first end surface faces one side where the first half shell is located, and the second end surface faces one side where the second half shell is located;

the first lug is arranged on the battery cell and positioned on one side of the first end face, and the first lug is electrically connected with the first half shell;

the second pole lug is arranged on the battery cell and positioned on one side of the first end face, and at least part of the second pole lug is opposite to the through hole;

the second half shell has the convex protruding structure of casing inside to the outside of second half shell forms first sunk structure, protruding structure extends in the through-hole, protruding structure with second utmost point ear electrical connection.

Optionally, the protrusion structure extends out to the first end surface, and the second tab covers an end portion of the protrusion structure.

Optionally, the button cell further includes a conductive post, the conductive post is disposed in the through hole, and the conductive post is connected to the second tab and the protrusion structure.

Optionally, the conductive pillar is provided with a second recessed structure, and the protruding structure is embedded in the second recessed structure.

Optionally, the inner wall of the second concave structure is provided with a third concave structure, the outer wall of the convex structure is provided with a lateral edge, and the lateral edge is located in the third concave structure.

Optionally, the top of the protruding structure abuts against the bottom of the second recessed structure.

Optionally, an insulating layer is disposed between the second tab and the first half shell, and the insulating layer abuts against the first half shell and the second tab.

Optionally, the insulating layer is an expansion glue layer.

Optionally, the first half shell includes a first panel and a first sidewall disposed along an edge of the first panel, the second half shell includes a second panel and a second sidewall disposed along an edge of the second panel, the second sidewall is sleeved on an outer side of the first sidewall, and an insulating sealing ring is disposed between the first sidewall and the second sidewall;

the first tab is electrically connected with the first panel, and the protruding structure is arranged on the second panel.

According to a second aspect of the present invention, there is provided an electronic device comprising a button cell as defined in any one of the first aspects.

The utility model discloses a technological effect lies in, is connected through protruding structure and the second utmost point ear on half shell of second, welds through first sunk structure location in the welding process and carries out the welding, has improved the welded precision.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is one of the schematic structural diagrams of a button cell in an embodiment of the present application.

Fig. 2 is a second schematic structural diagram of a button cell in an embodiment of the present application.

Fig. 3 is a schematic view of a structure of a bump structure in an embodiment of the present application.

Description of reference numerals:

1. a first half shell; 11. a first panel; 12. a first side wall; 2. a second half shell; 21. a second panel; 210. a first recess structure; 211. a raised structure; 212. a lateral edge; 22. a second side wall; 3. an electric core; 30. a through hole; 31. a first tab; 32. a second tab; 4. a conductive post; 5. an insulating layer; 6. and (5) insulating a sealing ring.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be considered a part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

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, further discussion thereof is not required in subsequent figures.

According to an embodiment of the present application, there is provided a button cell, as shown in fig. 1 and 2, including:

the shell comprises a first half shell 1 and a second half shell 2 sleeved outside the first half shell 1;

the battery cell 3 is arranged inside the shell, the battery cell 3 has a first end surface and a second end surface, the first end surface and the second end surface are arranged in an opposite manner, the battery cell 3 has a through hole 30 penetrating through the first end surface and the second end surface, the first end surface faces one side of the first half shell 1, and the second end surface faces one side of the second half shell 2;

the first tab 31 is arranged on the battery cell 3, the first tab 31 is located on one side of the first end face, and the first tab 31 is electrically connected with the first half-shell 1;

the second tab 32 is disposed on the battery cell 3, the second tab 32 is located on a side where the first end surface is located, and at least a part of the second tab is opposite to the through hole 30;

the second half-shell 2 has a convex structure 211 protruding from the inside of the second half-shell to form a first concave structure 210 at the outside of the second half-shell 2, the convex structure 211 extends into the through hole 30, and the convex structure 211 is electrically connected to the second tab 32.

In the embodiment of the present application, the protruding structures 211 on the second half shell 2 are connected to the second tab 32, and the first recessed structures 210 are positioned and welded during the welding process, so that the welding accuracy is improved.

The first tab 31 and the second tab 32 are both located on one side of the first end face, and the first tab 31 and the second tab 32 share a space on one side of the battery cell 3, so that the interval between one side of the second end face of the battery cell and the shell can be reduced.

The second half-shell 2 projects towards the interior of the housing to form a projecting structure 211. The convex structure 211 is formed such that the outer side surface of the second half shell 2 forms a first concave structure 210 which is concave inward. The protruding structures 211 protrude into the through-holes 30 on the electrical core 3, so that the second pole lug 32 is electrically connected to the protruding structures 211, thereby electrically connecting the second pole lug 32 to the second half-shell 2. The first half-shell 1 forms one electrode of the button cell by being electrically connected to the first tab 31, and the second half-shell 2 forms the other electrode of the button cell by being electrically connected to the second tab 32.

For example, welding is performed inside the first recessed structure by extending a welding gun into the first recessed structure from the outside of the button cell.

Alternatively, the raised structure 211 is a structure stamped and formed on the second half-shell 2.

In one embodiment, as shown in fig. 1, the protruding structure 211 protrudes to the first end surface, and the second pole ear 32 covers the end of the protruding structure 211.

In the embodiment of the present application, the protruding structure 211 protrudes from the first end surface, and the second tab 32 covers the end of the protruding structure 211 to form an effective contact, and the soldering is easier.

In one embodiment, as shown in fig. 2, the button cell further includes a conductive pillar 4, the conductive pillar 4 is disposed in the through hole 30, and the conductive pillar 4 is connected to the second tab 32 and the protrusion structure 211.

In the embodiment of the present application, the conductive pillar 4 serves as a conductive structure and a support structure in the through hole 30 to form an electrical connection between the second electrode tab 32 and the bump structure 211.

By providing the conductive post 4 to support between the second tab 32 and the protruding structure 211, stable contact can be formed on the second tab 32 side, so that a stable and firm connection can be formed. The conductive column 4 forms a stable support for the protrusion structure 211, and reduces the size of the protrusion structure 211 that needs to protrude, so as to ensure the structural strength of the protrusion structure 211.

In one embodiment, as shown in fig. 2, the conductive pillar 4 is provided with a second concave structure, and the convex structure 211 is embedded in the second concave structure.

In the embodiment of the present application, the protruding structure 211 is embedded in the second recessed structure to form a more stable contact with the conductive pillar 4, so that the connection reliability is improved.

Optionally, the top of the protruding structure 211 abuts against the bottom of the second recessed structure.

During welding, the top of the protruding structure 211 abuts against the bottom of the second recessed structure, so that the welding gun enters the first recessed structure 210, and welding is performed on the sidewall or the bottom of the first recessed structure 210, so that the protruding structure 211 is connected to the conductive post 4.

In one embodiment, as shown in fig. 2 and 3, the inner wall of the second concave structure is provided with a third concave structure, the outer wall of the convex structure 211 is provided with a side edge 212, and the side edge 212 is located in the third concave structure.

In the embodiment of the present application, the protruding structures 211 are embedded into the second recessed structures to form a positioning by the side edges 212 and the third recessed structures. And the relative rotation of the convex structure 211 and the second concave structure can be avoided, and the structural strength is improved.

Optionally, the third recessed structure extends inwardly along the opening of the second recessed structure, and the third recessed structure also forms an opening at the opening of the second recessed structure. The side edges 212 are embedded in the third recessed feature along the opening of the third recessed feature.

In one embodiment, as shown in fig. 1 and 2, an insulating layer 5 is disposed between the second tab 32 and the first half-shell 1, and the insulating layer 5 abuts against the first half-shell 1 and the second tab 32.

In the embodiment of the present application, the insulating layer 5 forms insulation between the second electrode tab 32 and the first half-shell 1, and forms a support for the second electrode tab 32 towards the electric core 3 side by the insulating layer 5 abutting against the second electrode tab 32, so as to ensure that the second electrode tab 32 is in effective contact with the protruding structure 211.

For example, in embodiments where conductive posts 4 are provided, the insulating layer 5 can provide support to the second pole ear 32 to the side of the conductive post 4.

In one embodiment, the insulating layer 5 is an intumescent glue layer.

The expansion glue layer is formed between the second pole lug 32 and the first half shell 1 through the expansion glue, so that the insulation effect is achieved, and the second pole lug 32 can be supported through the expansion effect of the expansion glue.

For example, during the assembly of the cell 3 with the first half-shell 1, expansion glue is applied to the inside of the first half-shell 1 or to the surface of the second pole lug 32 facing the first half-shell 1. After the electrolyte is injected, the expansion glue can absorb the electrolyte to generate an expansion effect, and is filled between the second pole lug 32 and the first half-shell 1. The volume of the expanded expansion glue is increased, and a supporting effect towards the protruding structure 211 side of the battery cell 3 can be formed on the second tab 32.

In one embodiment, as shown in fig. 1 and fig. 2, the first half-shell 1 includes a first panel 11 and a first sidewall 12 disposed along an edge of the first panel 11, the second half-shell 2 includes a second panel 21 and a second sidewall 22 disposed along an edge of the second panel 21, the second sidewall 22 is sleeved on an outer side of the first sidewall 12, and an insulating sealing ring 6 is disposed between the first sidewall 12 and the second sidewall 22;

the first tab 31 is electrically connected to the first panel 11, and the protruding structure 211 is disposed on the second panel 21.

In the embodiment of the present application, the first end face is opposed to the first panel 11, and the second end face is opposed to the second panel 21. The first tab 31 and the second tab 32 are both located between the first end face and the first panel 11.

The structure of the second panel 21 protrudes towards the inside of the housing to form a raised structure 211. The second panel 21 is formed with the convex structure 211 by, for example, press forming.

According to an embodiment of the application, an electronic device is provided, and the electronic device comprises the button cell battery.

This electronic equipment has the technological effect that this application button cell brought.

In the above embodiments, the differences between the embodiments are described in emphasis, and different optimization features between the embodiments can be combined to form a better embodiment as long as the differences are not contradictory, and further description is omitted here in consideration of brevity of the text.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A button cell, comprising:

the second pole lug is arranged on the electric core and positioned on one side of the first end face, and at least part of the second pole lug is opposite to the through hole;

2. The button cell according to claim 1, wherein the raised structure extends out to the first end face, and the second tab covers an end of the raised structure.

3. The button cell of claim 1, further comprising a conductive post disposed in the through hole, the conductive post being connected to the second tab and the protruding structure.

4. The button cell as claimed in claim 3, wherein the conductive posts are provided with second recessed structures, and the raised structures are embedded in the second recessed structures.

5. The button cell as recited in claim 4, wherein the inner wall of the second concave structure is provided with a third concave structure, and the outer wall of the convex structure is provided with a side edge, and the side edge is located in the third concave structure.

6. The button cell as defined in claim 4, wherein a top of the raised structure abuts a bottom of the second recessed structure.

7. The button cell according to claim 1, wherein an insulating layer is arranged between the second tab and the first half shell, and the insulating layer abuts against the first half shell and the second tab.

8. The button cell as defined in claim 7, wherein the insulating layer is an intumescent glue layer.

9. The button cell according to claim 1, wherein the first half-case comprises a first panel and a first sidewall disposed along an edge of the first panel, the second half-case comprises a second panel and a second sidewall disposed along an edge of the second panel, the second sidewall is sleeved outside the first sidewall, and an insulating sealing ring is disposed between the first sidewall and the second sidewall;

10. An electronic device, characterized in that it comprises a button cell according to any one of claims 1 to 9.