CN219226539U

CN219226539U - Button cell

Info

Publication number: CN219226539U
Application number: CN202320682158.6U
Authority: CN
Inventors: 周攀; 陈航
Original assignee: Luhua Zhifu Electronics Dongguan Co ltd
Current assignee: Luhua Zhifu Electronics Dongguan Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-06-20
Anticipated expiration: 2033-03-29

Abstract

The utility model provides a button cell, which comprises a positive electrode shell, a negative electrode shell, a positive electrode plate and a negative electrode plate. The positive electrode shell comprises a positive electrode plate and a positive electrode barrel, and the positive electrode plate is connected with one end of the positive electrode barrel. The negative electrode shell comprises a negative electrode terminal piece and a negative electrode barrel, wherein the negative electrode terminal piece is connected with one end of the negative electrode barrel, and the positive electrode barrel is fixedly sleeved outside the other end of the negative electrode barrel. The positive plate comprises a positive main body part and a positive terminal which are connected, the positive main body part is welded with one surface of the positive plate, which is opposite to the negative plate, and the positive terminal extends along the axial direction of the button cell in the direction away from the negative plate. The negative plate comprises a negative main body part, a negative connecting part and a negative terminal which are sequentially connected, wherein the negative main body part is welded with the outer surface of the negative cylinder, and the negative terminal and the positive terminal extend along the same direction and are protruded out of the positive plate. The button battery provided by the utility model has the advantages that the connection structure of the positive plate and the positive shell is simple, the connection structure of the negative plate and the negative shell is simple, and the processing is easy.

Description

Button cell

Technical Field

The utility model relates to the technical field of batteries, in particular to a button battery.

Background

Button-type batteries are widely used in various aspects of life, in particular in related products and fields such as computer motherboards, watches, calculators, bluetooth headsets, toy interphones, and the like. In order to meet the structural requirements of different terminal equipment, the positive terminal and the negative terminal are required to extend along the axial direction of the button cell. Fig. 3 of the reference (patent document with application number 202122185407.4 entitled "mounting insulator, rigid conductive member, assembly fitting, and button cell") discloses a button cell, in which the ends (corresponding to the positive and negative terminals) of the two rigid conductive members extend in the axial direction of the button cell, but the connection structure between the two rigid conductive members and the button cell is very complex, resulting in greater processing difficulty and lower production efficiency.

Therefore, a button cell is needed to solve the above technical problems.

Disclosure of Invention

The utility model provides a button cell, which has the advantages of simple connection structure of a positive plate and a positive shell, simple connection structure of a negative plate and a negative shell, easy processing and effective improvement of production efficiency.

The technical scheme of the utility model is as follows:

a button cell, comprising:

the positive electrode shell comprises a positive electrode terminal piece and a positive electrode barrel, wherein the positive electrode terminal piece is connected with one end of the positive electrode barrel;

the negative electrode shell comprises a negative electrode terminal piece and a negative electrode barrel, wherein the negative electrode terminal piece is connected with one end of the negative electrode barrel, and the positive electrode barrel is fixedly sleeved outside the other end of the negative electrode barrel;

the positive plate comprises a positive main body part and a positive terminal which are connected, the positive main body part is welded with one surface of the positive terminal plate, which is opposite to the negative terminal plate, and the positive terminal extends along the axial direction of the button cell in the direction away from the negative terminal plate; the method comprises the steps of,

the negative plate comprises a negative main body part, a negative connecting part and a negative terminal which are sequentially connected, wherein the negative main body part is welded with the outer surface of the negative cylinder, and the negative terminal and the positive terminal extend along the same direction and are protruded out of the positive plate.

In the button cell, the positive electrode main body part is arc-shaped, and two ends of the positive electrode main body part are bent towards the center of the positive electrode end piece; the positive electrode main body part is close to one side of the positive electrode barrel and is a connecting side, the positive electrode terminal is connected with the connecting side, the positive electrode sheet is integrally formed, and the positive electrode terminal is bent and formed relative to the positive electrode main body part.

In the button cell, the positive terminal is connected with the middle part of the connecting edge.

In the button cell, the connecting edge is provided with two grooves, and the two grooves are respectively connected with two sides of the positive terminal.

In the button cell, the projection of the positive terminal on the plane of the positive terminal plate is positioned on the positive terminal plate, the positive terminal and the positive cylinder are arranged at intervals, and the negative terminal is positioned on the outer side of the positive cylinder.

In the button cell, an included angle between the radial center line of the positive electrode terminal and the radial center line of the negative electrode terminal is 30-90 degrees.

In the button cell of the present utility model, the negative electrode main body portion is elongated and extends in the circumferential direction of the negative electrode can.

In the button cell of the utility model, the dimension of the negative electrode connecting part along the circumferential direction of the negative electrode barrel is smaller than the dimension of the negative electrode main body part along the circumferential direction of the negative electrode barrel and larger than the dimension of the negative electrode terminal along the circumferential direction of the negative electrode barrel.

In the button cell of the utility model, the outside of the positive electrode terminal and the negative electrode terminal are plated with tin, nickel, or gold.

In the button cell, the button cell further comprises insulating adhesive paper, two ends of the insulating adhesive paper are respectively attached to the positive electrode terminal piece and the negative electrode barrel, the middle of the insulating adhesive paper is attached to the outer wall of the positive electrode barrel, and the insulating adhesive paper is positioned between the positive electrode shell and the negative electrode piece.

Compared with the prior art, the utility model has the beneficial effects that: the button battery provided by the utility model has the advantages that when in processing, only the positive electrode shell and the negative electrode shell are required to be fixed together, the positive electrode main body part is welded on the positive electrode end piece, the negative electrode main body part is welded on the negative electrode cylinder, and the negative electrode terminal and the positive electrode terminal extend along the axial direction and the same direction of the button battery, so that the button battery can be matched with terminal equipment with a specific structure.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments are briefly described below, and the drawings in the following description are only drawings corresponding to some embodiments of the present utility model.

Fig. 1 is a schematic structural diagram of a button cell according to a preferred embodiment of the present utility model.

Fig. 2 is a schematic view illustrating another angle of the button cell according to the preferred embodiment of the present utility model.

Fig. 3 is a schematic top view of a button cell according to a preferred embodiment of the present utility model.

Fig. 4 is a schematic side view of a button cell according to a preferred embodiment of the present utility model.

Wherein,,

11. positive electrode shell, 111, positive electrode terminal plate, 112, positive electrode barrel,

12. a negative electrode case 121, a negative electrode terminal piece 122, a negative electrode can,

13. the positive electrode plate is provided with a plurality of grooves,

131. positive electrode body portion 1311, connecting sides, 1312, grooves,

132. the positive electrode terminal is provided with a positive electrode,

14. a negative electrode sheet 141, a negative electrode main body portion 142, a negative electrode connecting portion 143, a negative electrode terminal,

15. insulating gummed paper.

In the drawings, like structural elements are denoted by like reference numerals.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The terms of directions used in the present utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are used for explaining and understanding the present utility model only with reference to the orientation of the drawings, and are not intended to limit the present utility model.

The words "first," "second," and the like in the terminology of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not as limiting the order of precedence.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Fig. 3 of the reference (patent document with application number 202122185407.4 entitled "mounting insulator, rigid conductive member, assembly fitting, and button cell") discloses a button cell, in which the ends (corresponding to the positive and negative terminals) of the two rigid conductive members extend in the axial direction of the button cell, but the connection structure between the two rigid conductive members and the button cell is very complex, resulting in greater processing difficulty and lower production efficiency.

The following is a preferred embodiment of a button cell that solves the above technical problems.

Referring to fig. 1-4, a button cell according to a preferred embodiment of the present utility model includes a positive electrode case 11, a negative electrode case 12, a positive electrode sheet 13 and a negative electrode sheet 14, which are made of stainless steel or other hardware materials. The positive electrode case 11 includes a positive electrode tab 111 and a positive electrode can 112, and the positive electrode tab 111 is connected to one end of the positive electrode can 112. The negative electrode case 12 includes a negative electrode tab 121 and a negative electrode can 122, the negative electrode tab 121 is connected to one end of the negative electrode can 122, and the positive electrode can 112 is fixedly sleeved outside the other end of the negative electrode can 122. The junction of positive electrode can 112 and negative electrode can 122 is insulated. The positive electrode sheet 13 includes a positive electrode main body 131 and a positive electrode terminal 132, which are connected to each other, the positive electrode main body 131 and the positive electrode terminal 111 are welded to each other on a surface facing away from the negative electrode terminal 121, and the positive electrode terminal 132 extends in a direction away from the negative electrode terminal 121 in the axial direction of the coin cell. The negative electrode tab 14 includes a negative electrode main body portion 141, a negative electrode connecting portion 142, and a negative electrode terminal 143 connected in this order, the negative electrode main body portion 141 being welded to the outer surface of the negative electrode can 122, the negative electrode terminal 143 extending in the same direction as the positive electrode terminal 132 and protruding from the positive electrode tab 111.

In the button cell of the utility model, when in processing, only the positive electrode shell 11 and the negative electrode shell 12 are required to be fixed together, the positive electrode main body part 131 is welded on the positive electrode end piece 111, the negative electrode main body part 141 is welded on the negative electrode barrel 122, and the negative electrode terminal 143 and the positive electrode terminal 132 extend along the axial direction of the button cell and towards the same direction, so that the button cell can be matched with terminal equipment with a specific structure.

Referring to fig. 1, the positive electrode body 131 is arc-shaped, and both ends of the positive electrode body 131 are bent toward the center of the positive electrode tab 111. The side of the positive electrode main body 131 close to the positive electrode tube 112 is a connecting side 1311, the positive electrode terminal 132 is connected to the connecting side 1311, the positive electrode sheet 13 is integrally formed, and the positive electrode terminal 132 is formed by bending with respect to the positive electrode main body 131. This structure makes the positive electrode sheet 13 easy to process.

With continued reference to fig. 1, the positive terminal 132 is connected to the middle portion of the connecting edge 1311. In the process of connecting the positive terminal 132 and an external terminal device, the positive terminal 132 is easily pulled, and the structure makes the stress on both ends of the positive main body 131 uniform, so that the positive main body is not easily separated from the positive terminal piece 111.

With continued reference to fig. 1, the connecting edge 1311 is provided with two grooves 1312, and the two grooves 1312 are respectively connected to two sides of the positive terminal 132. With this structure, the positive electrode terminal 132 is formed by bending.

With continued reference to fig. 1, the projection of the positive terminal 132 on the plane of the positive terminal 111 is located on the positive terminal 111, and the positive terminal 132 is spaced from the positive cylinder 112, and the negative terminal 143 is located outside the positive cylinder 112. When the positive electrode terminal 132 and the negative electrode terminal 143 are juxtaposed, an appropriate distance between the positive electrode terminal 132 and the negative electrode terminal 143 can be maintained with this structure, and short circuit is unlikely to occur.

Referring to fig. 1, the center line of the positive electrode terminal 132 in the radial direction of the positive electrode terminal piece 111 overlaps the center line of the negative electrode terminal 143 in the radial direction of the positive electrode terminal piece 111, and the positive electrode terminal 132 and the negative electrode terminal 143 are parallel. Referring to fig. 3, in other embodiments, the included angle a between the radial center line of the positive terminal 132 and the radial center line of the negative terminal 143 on the positive terminal 111 may be 30 ° -90 °. With this structure, the positive electrode terminal 132 and the negative electrode terminal 143 are not too close to each other, and short-circuiting can be avoided, and the positive electrode terminal 132 and the negative electrode terminal 143 are not too far away from each other, so that the structure is compact.

With continued reference to fig. 1, the negative electrode main body 141 is elongated and extends in the circumferential direction of the negative electrode can 122. With this structure, the connection area between the negative electrode main body 141 and the negative electrode can 122 is increased, and therefore the welding between the negative electrode main body 141 and the negative electrode can 122 can be made firm.

With continued reference to fig. 1, the dimension of the negative electrode connection portion 142 along the circumferential direction of the negative electrode can 122 is smaller than the dimension of the negative electrode main body portion 141 along the circumferential direction of the negative electrode can 122, and is larger than the dimension of the negative electrode terminal 143 along the circumferential direction of the negative electrode can 122. In this structure, the size of the anode connecting portion 142 in the circumferential direction of the anode can 122 is smaller than the size of the anode main body portion 141 in the circumferential direction of the anode can 122, so that the anode connecting portion 142 can be easily bent; the size of the negative electrode connection portion 142 in the circumferential direction of the negative electrode can 122 is larger than the size of the negative electrode terminal 143 in the circumferential direction of the negative electrode can 122, so that the negative electrode connection portion 142 and the negative electrode terminal 143 can be distinguished from each other, and the negative electrode terminal 143 can be accurately connected to an external terminal device.

The outside of the positive electrode terminal 132 and the negative electrode terminal 143 are plated with tin, or nickel, or gold. This structure can improve the conductivity of the positive electrode terminal 132 and the negative electrode terminal 143.

With continued reference to fig. 1, the button cell further includes an insulating adhesive tape 15, two ends of which are respectively attached to the positive electrode terminal sheet 111 and the negative electrode barrel 122, the middle of which is attached to the outer wall of the positive electrode barrel 112, and the insulating adhesive tape 15 is located between the positive electrode case 11 and the negative electrode sheet 14. This structure can effectively keep insulation between the positive electrode case 11 and the negative electrode sheet 14 so as not to be short-circuited, and is easy to process.

The button cell manufacturing process of the preferred embodiment of the utility model.

1. The positive electrode tab 13 is bent to form a positive electrode main body portion 131 and a positive electrode terminal 132;

2. fixing the positive electrode case 11 and the negative electrode case 12 together;

3. attaching insulating adhesive paper 15 to the positive electrode case 11 and the negative electrode case 12;

4. welding the positive electrode main body 131 to the positive electrode terminal piece 111;

5. the negative electrode main body 141 is welded to the negative electrode can 122 so that the negative electrode tab 14 is positioned in correspondence with the insulating tape 15, and the negative electrode terminal 143 and the positive electrode terminal 132 extend in the same direction along the axial direction of the coin cell.

Thus, the process of the button cell of the present preferred embodiment is completed.

The button battery provided by the utility model has the advantages that when in processing, only the positive electrode shell and the negative electrode shell are required to be fixed together, the positive electrode main body part is welded on the positive electrode end piece, the negative electrode main body part is welded on the negative electrode cylinder, and the negative electrode terminal and the positive electrode terminal extend along the axial direction and the same direction of the button battery, so that the button battery can be matched with terminal equipment with a specific structure.

In summary, although the present utility model has been described with reference to the preferred embodiments, the scope of the utility model is not limited thereto, and any person skilled in the art who is skilled in the art should make equivalent substitutions or modifications according to the technical scheme of the present utility model within the scope of the present utility model.

Claims

1. A button cell, comprising:

2. The button cell of claim 1, wherein the positive electrode body portion is arc-shaped, and both ends of the positive electrode body portion are bent toward the center of the positive electrode end piece, a side of the positive electrode body portion, which is close to the positive electrode cylinder, is a connecting side, the positive electrode terminal is connected to the connecting side, the positive electrode piece is integrally formed, and the positive electrode terminal is bent with respect to the positive electrode body portion.

3. The button cell of claim 2 wherein the positive terminal is connected to the middle of the connecting edge.

4. The button cell of claim 2, wherein the connecting edge is provided with two grooves, the two grooves being respectively connected with two sides of the positive terminal.

5. The button cell of claim 2, wherein the projection of the positive terminal on the plane of the positive terminal is located on the positive terminal plate, the positive terminal is spaced from the positive cylinder, and the negative terminal is located outside the positive cylinder.

6. The button cell of claim 2 wherein the positive terminal is at an angle of 30 ° to 90 ° between the radial centerline of the positive terminal piece and the radial centerline of the negative terminal piece.

7. The button cell of claim 1, wherein the negative electrode body portion is elongated and extends in a circumferential direction of the negative electrode can.

8. The button cell of claim 7, wherein the dimension of the negative electrode connection portion in the negative electrode can circumferential direction is smaller than the dimension of the negative electrode main body portion in the negative electrode can circumferential direction and larger than the dimension of the negative electrode terminal in the negative electrode can circumferential direction.

9. The coin cell of claim 1 wherein the exterior of both the positive and negative terminals are plated with tin, or nickel, or gold.

10. The button cell of claim 1 further comprising an insulating adhesive paper having two ends attached to the positive electrode tab and the negative electrode can, respectively, and a middle attached to an outer wall of the positive electrode can, the insulating adhesive paper being located between the positive electrode can and the negative electrode tab.