Button cell and electronic equipment

文档序号：881021 发布日期：2021-03-19 浏览：27次中文

阅读说明：本技术 扣式电池及电子设备 (Button cell and electronic equipment ) 是由彭宁于 2020-12-04 设计创作，主要内容包括：本发明提供一种扣式电池及电子设备,涉及电池技术领域。其中,扣式电池包括：壳体和盖板组件；壳体包括底壁和环形的侧壁,侧壁的底端与底壁一体成型；盖板组件包括顶盖和导电件,顶盖的中部区域设置有通孔,导电件盖设在通孔上,导电件与顶盖绝缘连接；顶盖的外边缘与侧壁的顶端连接,形成容纳电极组件和电解液的容置腔,顶盖上配置有与顶盖一体设置的第一电连接部,第一电连接部凸出于侧壁。电子设备包括电子设备本体和扣式电池。通过顶盖上配置有与顶盖一体设置的第一电连接部,摒弃了现有扣式电池在安装在电子设备前需在焊接顶盖上焊接导电片,从而降低了扣式电池的制造成本。(The invention provides a button cell and electronic equipment, and relates to the technical field of cells. Wherein, button cell includes: a housing and a cover assembly; the shell comprises a bottom wall and an annular side wall, and the bottom end of the side wall and the bottom wall are integrally formed; the cover plate assembly comprises a top cover and a conductive piece, a through hole is formed in the middle area of the top cover, the conductive piece covers the through hole, and the conductive piece is connected with the top cover in an insulating mode; the outer edge of the top cover is connected with the top end of the side wall to form an accommodating cavity for accommodating the electrode assembly and electrolyte, a first electric connection part integrally arranged with the top cover is arranged on the top cover, and the first electric connection part protrudes out of the side wall. The electronic equipment comprises an electronic equipment body and a button cell. Dispose the first electricity connecting part that sets up with the top cap is integrative through the top cap, abandoned current button cell and need welded the conducting strip on the welding top cap before installing electronic equipment to button cell's manufacturing cost has been reduced.)

1. A button cell battery, comprising: a housing and a cover assembly;

the shell comprises a bottom wall and an annular side wall, and the bottom end of the side wall and the bottom wall are integrally formed;

the cover plate assembly comprises a top cover and a conductive piece, a through hole is formed in the middle area of the top cover, the conductive piece covers the through hole, and the conductive piece is connected with the top cover in an insulating mode;

the outer edge of the top cover is connected with the top end of the side wall to form an accommodating cavity for accommodating the electrode assembly and electrolyte, and a first electric connection part integrally arranged with the top cover is arranged on the top cover and protrudes out of the side wall.

2. The button cell according to claim 1, wherein the cover plate assembly further comprises a conductive sealing member, the conductive sealing member is provided with a liquid injection port for injecting the electrolyte into the accommodating cavity, and the conductive sealing member is covered on the liquid injection port;

the conductive piece is provided with a second electric connection part integrally arranged with the conductive piece, the second electric connection part protrudes out of the side wall, and/or the conductive sealing piece is provided with a third electric connection part integrally arranged with the conductive sealing piece, and the third electric connection part protrudes out of the side wall;

the first electrical connection part and the second electrical connection part have opposite electrical properties, and the second electrical connection part and the third electrical connection part have the same electrical property.

3. The button cell according to claim 2, wherein the ratio of the angle between the direction of projection of the first electrical connection portion and the direction of projection of the second electrical connection portion is less than 90 °; and/or the ratio of the included angle between the protruding direction of the first electric connection part and the protruding direction of the third electric connection part is smaller than 90 degrees.

4. The button cell according to claim 3, wherein the upper surface of the first electrical connection part is not lower than the upper surface of the top cover.

5. The button cell battery according to claim 4, wherein the conductive member comprises a conductive member body and a second electrical connection part, the conductive member body and the second electrical connection part are integrally formed, the upper surface of the second electrical connection part is not lower than the upper surface of the conductive member body, and the upper surface of the second electrical connection part is higher than the upper surface of the first electrical connection part.

6. The button cell according to claim 5, wherein the conductive sealing member comprises a conductive sealing member body and a third electrical connection portion, the conductive sealing member body and the third electrical connection portion are integrally formed, and an upper surface of the third electrical connection portion is higher than an upper surface of the first electrical connection portion.

7. The button cell according to claim 6, wherein the conductive member is disposed on a surface of the top cover facing away from the receiving cavity, an insulating member is disposed between the second electrical connection portion and the top cover, and the second electrical connection portion protrudes from the side wall.

8. The button cell according to claim 6, wherein the conductive member is disposed on a surface of the top cover facing away from the accommodating cavity, an insulating member is disposed between the conductive member and the top cover, a counter bore is disposed on the conductive member, and a center of the counter bore coincides with a center of the liquid injection port;

the conductive sealing element comprises a conductive sealing element body and is characterized in that a bending portion is arranged between the third electric connection portions, the conductive sealing element body and the third electric connection portions are perpendicular to the bending portion, the conductive sealing element body is arranged in the counter bore, the third electric connection portions protrude out of the side wall, and a sealing structure is arranged between the third electric connection portions and the first electric connection portions.

9. The button cell according to claim 8, wherein the distance between the conductive sealing member body and the third electrical connection part in the vertical direction is 0.1mm to 0.5 mm.

10. The button cell according to claim 6, wherein the conductive member is disposed on a surface of the top cover facing the accommodating cavity, a surface of the top cover abutting against the conductive member is a horizontal surface, and an insulating member is disposed between the conductive member and the top cover; the conductive sealing element body is arranged on one surface of the conductive element, which is far away from the accommodating cavity, and the conductive sealing element body is welded with the conductive element;

the conductive sealing piece body and a bending part is arranged between the third electric connection parts, the third electric connection parts protrude out of the side walls, the third electric connection parts are higher than the upper surface of the top cover, and an insulating piece is arranged between the top cover and the conductive sealing piece body.

11. The button cell according to claim 10, wherein the conductive member is provided with a boss penetrating through the through hole, the boss is provided on a surface of the conductive member abutting against the top cover, the liquid injection port penetrates through the boss, the center of the boss coincides with the center of the liquid injection port, and the insulating member is provided between the boss and the through hole.

12. The button cell according to claim 11, wherein a counter bore is formed in one end, away from the accommodating cavity, of the boss, the center of the counter bore coincides with the center of the liquid injection port, and the conductive sealing piece body is arranged in the counter bore.

13. The button cell according to any one of claims 2 to 12, wherein a groove is formed on a side of the conductive sealing member facing away from the receiving cavity, the groove forms a thinning area, and the center of the thinning area coincides with the center of the liquid injection port.

14. The button cell according to any one of claims 2 to 12, wherein the width of the first electrical connection part is 1mm to 3mm, and the length of the first electrical connection part protruding out of the side wall is more than 1 mm;

or the width of the second electric connection part is 1-3 mm, and the length of the second electric connection part protruding out of the side wall is more than 1 mm;

or the width of the third electric connection part is 1-3 mm, and the length of the third electric connection part protruding out of the side wall is larger than 1 mm.

15. An electronic device, comprising: an electronic device body and the button cell of any one of claims 1 to 14, which provides electrical energy to said electronic device body.

Technical Field

The invention relates to the technical field of batteries, in particular to a button cell and electronic equipment.

Background

In the prior art, before a button cell is installed in an electronic device, two conducting strips need to be welded on the positive and negative sides, so that the positive and negative sides of the button cell are conducted with the positive and negative sides of the electronic device.

However, the welding of two conductive sheets in the button cell increases the manufacturing cost of the button cell.

Disclosure of Invention

The invention provides a button cell and electronic equipment, which are used for solving the problem that the manufacturing cost of the button cell is increased due to the fact that a Chinese-style cell in the prior art is welded with two conducting strips.

In one aspect, the present invention provides a button cell battery comprising: a housing and a cover assembly;

the shell comprises a bottom wall and an annular side wall, and the bottom end of the side wall and the bottom wall are integrally formed;

In an optional embodiment, the cover plate assembly further comprises a conductive sealing piece, wherein a liquid injection port for injecting the electrolyte into the accommodating cavity is formed in the conductive sealing piece, and the conductive sealing piece is covered on the liquid injection port;

A first electric connection part which is integrally arranged with the top cover is arranged on the top cover; the conductive piece is provided with a second electric connection part which is integrated with the conductive piece, and/or the conductive sealing piece is provided with a third electric connection part which is integrated with the conductive sealing piece, so that two conductive sheets which need to be welded on the positive and negative sides before the conventional button cell is installed on electronic equipment are abandoned, and the manufacturing cost of the button cell is reduced.

In one optional embodiment, the ratio of the angle between the direction of projection of the first electrical connection and the direction of projection of the second electrical connection is less than 90 °; and/or the ratio of the included angle between the protruding direction of the first electric connection part and the protruding direction of the third electric connection part is smaller than 90 degrees.

The ratio of the included angle between the protruding direction of the first electric connection part and the protruding direction of the second electric connection part is smaller than 90 degrees; and/or the included angle ratio between the protruding direction of the first electric connection part and the protruding direction of the third electric connection part is less than 90 degrees, so that the overall structure of the button cell is more uniformly distributed, and the overall attractiveness of the button cell is improved.

In an alternative embodiment, the upper surface of the first electrical connection portion is not lower than the upper surface of the top cover.

The upper surface of the first electric connection part is not lower than that of the top cover, so that the first electric connection part is convenient to be connected with the electronic equipment.

In an optional embodiment, the conductive member includes a conductive member body and a second electrical connection portion, the conductive member body and the second electrical connection portion are integrally formed, an upper surface of the second electrical connection portion is not lower than an upper surface of the conductive member body, and an upper surface of the second electrical connection portion is higher than an upper surface of the first electrical connection portion.

The upper surface of the second electric connection part is not lower than that of the conductive piece body, and the upper surface of the second electric connection part is higher than that of the first electric connection part, so that the second electric connection part is convenient to be connected with electronic equipment.

In an optional embodiment, the conductive sealing member includes a conductive sealing member body and a third electrical connection portion, the conductive sealing member body and the third electrical connection portion are integrally formed, and an upper surface of the third electrical connection portion is higher than an upper surface of the first electrical connection portion.

The upper surface of the third electric connection part is higher than that of the first electric connection part, so that the third electric connection part is convenient to be connected with the electronic equipment.

In an optional embodiment, the conductive member is disposed on a surface of the top cover facing away from the accommodating cavity, an insulating member is disposed between the second electrical connection portion and the top cover, and the second electrical connection portion protrudes from the side wall.

In an optional embodiment, the conductive piece is arranged on a surface of the top cover, which faces away from the accommodating cavity, an insulating piece is arranged between the conductive piece and the top cover, a counter bore is arranged on the conductive piece, and the center of the counter bore is overlapped with the center of the liquid injection port;

In an optional embodiment, the distance between the conductive sealing member body and the third electrical connection part in the vertical direction is 0.1mm to 0.5 mm.

In an optional embodiment, the conductive piece is arranged on one surface of the top cover facing the accommodating cavity, the surface of the conductive piece abutting against the top cover is a horizontal plane, and an insulating piece is arranged between the conductive piece and the top cover; the conductive sealing element body is arranged on one surface of the conductive element, which is far away from the accommodating cavity, and the conductive sealing element body is welded with the conductive element;

By arranging the conductive piece on the inner side of the shell, the volume of the button cell can be reduced, and the energy density of the button cell is increased.

In an optional embodiment, a boss penetrating through the through hole is disposed on the conductive member, the boss is disposed on a surface of the conductive member abutting against the top cover, the liquid injection port penetrates through the boss, the center of the boss coincides with the center of the liquid injection port, and the insulating member is disposed between the boss and the through hole.

In an optional embodiment, a counter bore is arranged at one end, away from the accommodating cavity, of the boss, the center of the counter bore coincides with the center of the liquid injection port, and the conductive sealing piece body is arranged in the counter bore.

In an optional embodiment, a groove is formed on a side of the conductive sealing member facing away from the accommodating cavity, the groove forms a thinning area, and the center of the thinning area coincides with the center of the liquid filling opening.

In an optional embodiment, the width of the first electric connection part is 1mm to 3mm, and the length of the first electric connection part protruding out of the side wall is more than 1 mm;

or the width of the second electric connection part is 1-3 mm, and the length of the second electric connection part protruding out of the side wall is more than 1 mm;

or the width of the third electric connection part is 1-3 mm, and the length of the third electric connection part protruding out of the side wall is larger than 1 mm.

In another aspect, the present invention further provides an electronic device, including: the button cell battery of any one of the above-mentioned and the electronic equipment body, button cell battery provides the electric energy for the electronic equipment body.

The invention provides a button cell and an electronic device, comprising: a housing and a cover assembly; the shell comprises a bottom wall and an annular side wall, and the bottom end of the side wall and the bottom wall are integrally formed; the cover plate assembly comprises a top cover and a conductive piece, a through hole is formed in the middle area of the top cover, the conductive piece covers the through hole, and the conductive piece is connected with the top cover in an insulating mode; the outer edge of the top cover is connected with the top end of the side wall to form an accommodating cavity for accommodating the electrode assembly and electrolyte, a first electric connection part integrally arranged with the top cover is arranged on the top cover, and the first electric connection part protrudes out of the side wall. Dispose the first electricity connecting part that sets up with the top cap is integrative through the top cap, abandoned current button cell and need welded the conducting strip on the welding top cap before installing electronic equipment to button cell's manufacturing cost has been reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic view of a button cell according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the button cell provided in fig. 1;

FIG. 3 is a schematic structural view of the top cover of FIG. 1;

FIG. 4 is a schematic structural diagram of the conductive member in FIG. 1;

FIG. 5 is a schematic view of a welding structure of the top cover and the sidewall of FIG. 1;

fig. 6 is a schematic view of a second structure of a button cell provided by the invention;

fig. 7 is a schematic cross-sectional structure view of the button cell provided in fig. 6;

FIG. 8 is a schematic view of the conductive closure of FIG. 6;

FIG. 9 is a schematic cross-sectional view of the conductive closure of FIG. 8;

fig. 10 is a schematic view of a first structure of the conductive sealing member body in fig. 8;

fig. 11 is a schematic cross-sectional view of the conductive sealing member body in fig. 10;

fig. 12 is a schematic view of a second structure of the conductive sealing member body in fig. 8;

fig. 13 is a schematic cross-sectional view of the conductive sealing member body in fig. 12;

FIG. 14 is a schematic view of a third configuration of the conductive closure body of FIG. 8;

fig. 15 is a schematic cross-sectional view of the conductive sealing member body in fig. 14;

fig. 16 is a schematic view of a fourth structure of the conductive sealing member body in fig. 8;

fig. 17 is a schematic cross-sectional view of the conductive sealing member body in fig. 16;

fig. 18 is a schematic view of a third structure of a button cell provided by the invention;

FIG. 19 is a schematic diagram of a first cross-sectional structure of the conductive device in FIG. 18;

FIG. 20 is a schematic diagram of a second cross-sectional structure of the conductive device in FIG. 18;

FIG. 21 is a schematic view of a third cross-sectional structure of the conductive member in FIG. 18;

fig. 22 is a structural diagram illustrating an application state of the conductive device in fig. 20.

Description of reference numerals:

10-a housing; 101-a containing cavity; 11-a bottom wall;

12-a side wall; 20-a cover plate assembly; 21-a top cover;

2101-a through hole; 211 — a first electrical connection; 22-a conductive member;

221-a second electrical connection; 222-a conductive member body; 2221-liquid injection port;

2222-counter bore; 23-a conductive seal; 2301-thinned area;

231-a third electrical connection; 232-conductive sealing member body; 233-bending part;

30-an electrode assembly; 31-a first tab; 32-a second tab;

40-insulating member.

Detailed Description

In the description of the present specification, references to "one embodiment", "some embodiments", "an illustrative embodiment", "an example", "a specific example", or "some examples", etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description above, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Button cells, which are cells having an overall size similar to a button, are generally large in diameter and thin in thickness. Button cells, because of their small size, find widespread use in a variety of miniature electronic devices, such as: the field of wearable electronic equipment, the field of medical products and the like. In the prior art, before a button cell is installed in an electronic device, two conducting strips need to be welded on the positive and negative sides, so that the positive and negative sides of the button cell are conducted with the positive and negative sides of the electronic device. However, the welding of two conductive sheets in the button cell increases the manufacturing cost of the button cell.

In order to solve the above problems, the present invention provides a button cell and an electronic device, wherein a first electrical connection portion integrally formed with a top cover is configured on the top cover, and a conductive sheet welded on the top cover before the button cell is mounted on the electronic device is eliminated, so that the manufacturing cost of the button cell is reduced.

The button cell and the electronic device provided by the invention are explained in detail with reference to specific embodiments.

Fig. 1 is a schematic view of a button cell according to the present invention; fig. 2 is a schematic cross-sectional structure diagram of the button cell provided in fig. 1; FIG. 3 is a schematic structural view of the top cover of FIG. 1; fig. 4 is a schematic structural diagram of the conductive member in fig. 1.

As shown in the figures, the present invention provides a button cell battery, comprising: a housing 10 and a cover plate assembly 20; the housing 10 includes a bottom wall 11 and an annular side wall 12, and a bottom end of the side wall 12 is integrally formed with the bottom wall 11; the cover plate assembly 20 comprises a top cover 21 and a conductive piece 22, a through hole 2101 is formed in the middle area of the top cover 21, the conductive piece 22 covers the through hole 2101, and the conductive piece 22 is in insulated connection with the top cover 21; the outer edge of the top cover 21 is connected to the top end of the side wall 12 to form a receiving cavity 101 for receiving the electrode assembly 30 and the electrolyte, and the top cover 21 is provided with a first electrical connection portion 211 integrally formed with the top cover 21, wherein the first electrical connection portion 211 protrudes from the side wall 12.

The shape of the cross section of the housing 10 may be any shape such as a circle, an ellipse, a polygon, etc., and the present invention is not limited thereto.

The first electrical connection portion 211 is integrally formed with the top cover 21. Since the electrode assembly 30 supplies power to the negative electrode or the positive electrode of the electronic device through the top cover 21 and the first electrical connection portion 211, the top cover 21 and the first electrical connection portion 211 may be made of a metal material such as stainless steel, copper, iron, or nickel. The shape of the first electrical connection portion 211 can be designed according to actual requirements of the electronic device.

In order for the first electrical connection portion to facilitate connection with the electronic device, the upper surface of the first electrical connection portion 211 is not lower than the upper surface of the top cover 21. In other implementations, the upper surface of the first electrical connection portion 211 may be lower than the upper surface of the top cover 21, and is not specifically configured here.

The top cover 21 is provided with a through hole 2101 so that the top cover 21 forms a ring structure. The shape of the through hole 2101 may be circular, elliptical, or multi-deformed, etc., and the present invention is not particularly limited thereto.

In an alternative embodiment, the electrode assembly 30 is to provide power to the negative electrode of the electronic device through the top cover 21 and the first electrical connection portion 211, the first electrical connection portion 211 is a rectangular nickel plate, the width of the first electrical connection portion 211 is 1mm to 3mm, the length of the first electrical connection portion 211 protruding out of the side wall 12 is greater than 1mm, the width of the first electrical connection portion 211 is the same as the thickness of the top cover 21, the first electrical connection portion 211 and the top cover 21 are located in the same plane, and the first electrical connection portion 211 protrudes out of the side wall 12.

The electrode assembly 30 is located in the receiving cavity 101. The electrode assembly 30 includes a first stage, a second stage, and a separator separating the first and second stages; a first lug 31 is arranged on the first grade piece, the first lug 31 can be arranged on the first grade piece in a welding mode, a second lug 32 is arranged on the second grade piece, and the second lug 32 can be arranged on the second grade piece in a welding mode; the first stage sheet, the second stage sheet, and the separator are wound layer by layer in the same direction from the winding head end during the winding process and finally the electrode assembly 30 is formed. The first tab 31 is electrically connected to the top cover 21 by welding or the like, and the second tab 32 is also electrically connected to the conductive member 22 by welding or bonding.

It should be noted that the first-level plate and the second-level plate may be a positive plate and a negative plate, and the first-level plate and the second-level plate may also be a negative plate and a positive plate, which are not specifically set herein.

According to the button cell provided by the invention, the first electric connection part 211 which is integrated with the top cover 21 is configured on the top cover 21, so that the condition that a conducting strip needs to be welded on the top cover before the existing button cell is installed on electronic equipment is eliminated, and the manufacturing cost of the button cell is reduced.

Optionally, the cover plate assembly 20 further includes a conductive sealing member 23, the conductive member 22 is provided with a liquid injection port 2221 for injecting the electrolyte into the accommodating cavity 101, and the conductive sealing member 23 is sealed on the liquid injection port 2221; the conductive member 22 is provided with a second electrical connection part 221 integrally arranged with the conductive member 22, the second electrical connection part 221 protrudes out of the side wall 12, and/or the conductive sealing member 23 is provided with a third electrical connection part 231 integrally arranged with the conductive sealing member 23, and the third electrical connection part 231 protrudes out of the side wall 12; the first electrical connection portion 211 and the second electrical connection portion 221 have opposite electrical properties, and the second electrical connection portion 221 and the third electrical connection portion 231 have the same electrical property.

The conductive member 22 includes a conductive member body 222 and a second electrical connection portion 221, the conductive member body 222 and the second electrical connection portion 221 are integrally formed, and the second electrical connection portion 221 is parallel to the first electrical connection portion 211.

In order to facilitate the connection of the second electrical connection portion 221 with the electronic device, the upper surface of the second electrical connection portion 211 may not be lower than the upper surface of the conductive member body 222, and the upper surface of the second electrical connection portion 221 is higher than the upper surface of the first electrical connection portion 211. In other implementations, the upper surface of the second electrical connection portion 211 may also be lower than the upper surface of the conductive member body 222, and the upper surface of the second electrical connection portion 221 is higher than the upper surface of the first electrical connection portion 211, which is not specifically provided herein.

The conductive member body 222 covers the through hole 2101, and the insulating member 40 is disposed between the conductive member body 222 and the through hole 2101, and the insulating member 40 insulates and hermetically connects the conductive member body 222 and the through hole 2101.

The insulating member 40 may be an insulating paste or a ceramic layer, and is not specifically provided herein.

In an alternative embodiment, the electrode assembly 30 is to provide power to the positive electrode of the electronic device through the conductive member body 222 and the second electrical connection portion 221, the second electrical connection portion 221 is a rectangular aluminum plate, the width of the protruding sidewall 12 of the second electrical connection portion 221 is 1mm to 3mm, the length of the second electrical connection portion 221 is greater than 1mm, and the second electrical connection portion 221 is parallel to the first electrical connection portion 211.

It should be noted that the second electrical connection portion 221 may also be an aluminum-nickel composite sheet, where the aluminum-nickel composite sheet is a two-layer structure, one layer is nickel, the other layer is aluminum, and the thickness ratio is 1: 0.9 to 1: 1.1 or 2: 0.9 to 2: 1.1.

The conductive sealing member 23 includes a conductive sealing member body 232 and a third electrical connection portion 231, the conductive sealing member body 232 and the third electrical connection portion 231 are integrally provided, and the third electrical connection portion 231 is parallel to the first electrical connection portion 211.

The conductive sealing member body 232 is covered on the liquid injection port 2221, and the conductive sealing member 23 is hermetically connected to the liquid injection port 2221.

The third electrical connection portion 231 is integrally formed with the conductive sealing member body 232. Since the electrode assembly 30 supplies power to the negative electrode or the positive electrode of the electronic device through the conductive sealing member body 232 and the third electrical connection portion 231, the conductive sealing member body 232 and the third electrical connection portion 231 may be made of stainless steel, copper, iron, nickel, or other metal materials. The shape of the third electrical connection portion 231 may be designed according to actual requirements of the electronic device.

In order for the third electrical connection portion 231 to facilitate connection with the electronic device, the upper surface of the third electrical connection portion 231 may be higher than the upper surface of the first electrical connection portion. In other implementations, the upper surface of the third electrical connection portion 231 may not be higher than the upper surface of the first electrical connection portion, and is not specifically configured here.

An insulating member 40 is disposed between the third electrical connection portion 231 and the first electrical connection portion 211, so that the third electrical connection portion 231 and the first electrical connection portion 211 are insulated and hermetically connected.

In an alternative embodiment, the electrode assembly 30 is to provide power to the positive electrode of the electronic device through the conductive sealing member body 232 and the third electrical connection portion 231, the third electrical connection portion 231 is a rectangular aluminum plate, the width of the protruding sidewall 12 of the third electrical connection portion 231 is 1mm to 3mm, the length of the third electrical connection portion 231 is greater than 1mm, and the third electrical connection portion 231 is parallel to the first electrical connection portion 211.

It should be noted that, the button cell may be configured with a first electrical connection portion 211 integrally disposed on the top cover 21, a second electrical connection portion 221 integrally disposed on the conductive member 22, and a third electrical connection portion 231 integrally disposed on the conductive sealing member 23, where the first electrical connection portion 211 and the second electrical connection portion 221 are opposite in electrical property, and the conductive sealing member 22 is configured with a second electrical connection portion 221 integrally disposed on the conductive member 22; the button cell may also be configured such that the top cover 21 is configured with a first electrical connection portion 211 integrally disposed with the top cover 21, the conductive sealing member 23 is configured with a third electrical connection portion 231 integrally disposed with the conductive sealing member 23, the conductive member 22 is not configured with a second electrical connection portion 221 integrally disposed with the conductive member 22, the first electrical connection portion 211 and the third electrical connection portion 231 have opposite electrical properties, and at this time, the conductive member 22 is welded to the conductive sealing member 23; the button cell may further include a first electrical connection portion 211 integrally disposed on the top cover 21, a second electrical connection portion 221 integrally disposed on the conductive member 22, and a third electrical connection portion 231 integrally disposed on the conductive sealing member 23, wherein the first electrical connection portion 211 and the second electrical connection portion 221 have opposite electrical properties, the second electrical connection portion 221 and the third electrical connection portion 231 have the same electrical property, and the conductive member 22 and the conductive sealing member 23 are welded to each other, which is not specifically disposed herein.

The button cell provided by the invention is characterized in that a first electric connection part which is integrally arranged with a top cover is configured on the top cover; the conductive piece is provided with a second electric connection part which is integrated with the conductive piece, and/or the conductive sealing piece is provided with a third electric connection part which is integrated with the conductive sealing piece, so that two conductive sheets which need to be welded on the positive and negative sides before the conventional button cell is installed on electronic equipment are abandoned, and the manufacturing cost of the button cell is reduced.

Optionally, the ratio of the included angle between the protruding direction of the first electrical connection portion 211 and the protruding direction of the second electrical connection portion 221 is less than 90 °; and/or the included angle ratio between the protruding direction of the first electric connection part 211 and the protruding direction of the third electric connection part 231 is less than 90 degrees, so that the overall structure distribution of the button cell is more uniform, and the overall aesthetic property of the button cell is improved.

Fig. 5 is a schematic view of a welding structure of the top cover and the side wall in fig. 1.

Optionally, in order to improve the safety of the button cell, the outer edge of the top cover 21 is welded to the top end of the side wall 12, the outer surface of the outer edge of the top cover 21 is provided with a welding mark, and the welding penetration extends from the top cover 21 to the side wall 12. In other implementations, the top cover 21 and the side wall 12 may be connected by adhesion, and this is not specifically provided here.

Optionally, in order to enable the button cell to output a plurality of circuits, the first electrical connection portion 211 is multiple, and the multiple first electrical connection portions 211 are arranged at intervals along the side surface of the top cover 21; the second electrical connection parts 221 are multiple, and the multiple second electrical connection parts 221 are arranged at intervals along the side surface of the conductive member body 222; the number of the third electrical connection portions 231 is multiple, and the multiple third electrical connection portions 231 are arranged at intervals along the side surface of the conductive sealing member body 232, so that the applicability of the button cell is improved.

Optionally, the conductive sealing element 23 is not provided with a third electrical connection portion 231 integrally arranged with the conductive sealing element 23, the conductive element 22 is arranged on a side of the top cover 21 away from the accommodating cavity 101, an insulating element 40 is arranged between the second electrical connection portion 221 and the top cover 21, the second electrical connection portion 221 protrudes out of the side wall 12, the conductive element body 222 is provided with a counter bore 2222, and the center of the counter bore 2222 coincides with the center of the liquid injection port 2221; a conductive seal 23 is disposed in the counterbore.

Specifically, the conductive member 22 includes a conductive member body 222 and a second electrical connection portion 221, the conductive member body 222 and the second electrical connection portion 221 are integrally provided, and the second electrical connection portion 221 is parallel to the top cover 21. A boss is arranged at one end of the conductive member body 222 away from the accommodating cavity 101, and the center of the boss is overlapped with the center of the liquid injection port 2221; in order to improve the sealing performance between the conductive sealing member 23 and the liquid injection port 2221, a counter bore 2222 is provided at an end of the conductive member body 222 away from the accommodating cavity 101, and the center of the counter bore 2222 coincides with the center of the liquid injection port 2221.

The insulating member 40 insulates and hermetically connects the conductive member body 222 and the through-hole 2101, that is, the conductive member body 222 is adhered to the edge of the through-hole 2101 by the insulating member 40 and covers the through-hole 2101 on the top cover 21. The second electrical connection portion 221 is flush with an end surface of the conductive member body 222 at an end far from the accommodating cavity 101, and an insulating member 40 is disposed between the second electrical connection portion 221 and the first electrical connection portion 211, that is, the insulating member 40 is disposed between the second electrical connection portion 221 and the top cover 21. The shape of the counter bore 2222 is the same as the shape of the liquid injection port 2221, that is, when the shape of the liquid injection port 2221 is circular, the shape of the counter bore 2222 is also circular, and for example, the depth of the counter bore 2222 may be 0.05mm to 0.45 mm.

The liquid injection port 2221 is covered with the conductive sealing member 23, that is, the conductive sealing member 23 is located in the counterbore 2222, and because the depth of the counterbore 2222 is small, the conductive sealing member 23 may be a sheet-shaped structure and located in the counterbore 2222 to cover the liquid injection port 2221; in order to improve the sealing performance, the conductive sealing member 23 is connected to the liquid filling opening 2221 in a sealing manner, for example, the conductive sealing member 23 and the liquid filling opening 2221 may be welded together, that is, after the electrolyte is filled into the accommodating chamber 101 through the liquid filling opening 2221, the joint between the conductive sealing member 23 and the counter bore 2222 is welded together outside the top cover 21, so as to improve the sealing performance.

Fig. 6 is a schematic view of a second structure of a button cell provided by the invention; fig. 7 is a schematic cross-sectional structure view of the button cell provided in fig. 6; FIG. 8 is a schematic view of the conductive closure of FIG. 6; FIG. 9 is a schematic cross-sectional view of the conductive closure of FIG. 8; fig. 10 is a schematic view of a first structure of the conductive sealing member body in fig. 8; fig. 11 is a schematic cross-sectional view of the conductive sealing member body in fig. 10; fig. 12 is a schematic view of a second structure of the conductive sealing member body in fig. 8; fig. 13 is a schematic cross-sectional view of the conductive sealing member body in fig. 12; FIG. 14 is a schematic view of a third configuration of the conductive closure body of FIG. 8; fig. 15 is a schematic cross-sectional view of the conductive sealing member body in fig. 14; fig. 16 is a schematic view of a fourth structure of the conductive sealing member body in fig. 8; fig. 17 is a schematic cross-sectional view of the conductive sealing member body in fig. 16.

Optionally, the second electrical connection portion 221 integrally disposed with the conductive member 22 is not disposed on the conductive member 22, the conductive member 22 is disposed on a surface of the top cover 21 away from the accommodating cavity 101, and the insulating member 40 is disposed between the conductive member 22 and the top cover 21.

A boss is arranged at one end of the conductive piece 22, which is far away from the accommodating cavity 101, and the center of the boss is overlapped with the center of the liquid injection port 2221; in order to improve the sealing performance between the conductive sealing member 23 and the liquid injection port 2221, a counter bore 2222 is provided at an end of the conductive member body 222 away from the accommodating cavity 101, and the center of the counter bore 2222 coincides with the center of the liquid injection port 2221. The shape of the counter bore 2222 is the same as the shape of the liquid injection port 2221, that is, when the shape of the liquid injection port 2221 is circular, the shape of the counter bore 2222 is also circular, and for example, the depth of the counter bore 2222 may be 0.05mm to 0.45 mm.

The conductive sealing member 23 includes a conductive sealing member body 232, a third electrical connection portion 231, and a bending portion 233, the bending portion 233 is disposed between the conductive sealing member body 232 and the third electrical connection portion 231, the conductive sealing member body 232 and the third electrical connection portion 231 are both perpendicular to the bending portion 233, and the conductive sealing member body 232, the third electrical connection portion 231, and the bending portion 233 are integrally formed. Because the depth of the counter bore 2222 is smaller, the conductive sealing element body 232 can be a sheet-shaped structure and is positioned in the counter bore 2222 to seal the liquid injection port 2221; in order to improve the sealing performance, the conductive sealing member body 232 is hermetically connected to the liquid inlet 2221.

The third electrical connection portion 231 is disposed in parallel with the first electrical connection portion 211. The shape of the conductive sealing member body 232 is the same as the shape of the liquid injection port 2221, that is, when the shape of the liquid injection port 2221 is circular, the shape of the conductive sealing member body 232 is also circular, and for example, the vertical distance between the conductive sealing member body 232 and the third electrical connection portion 231 may be 0.1mm to 0.5 mm.

In order to improve the insulation between the third electrical connection portion 231 and the first electrical connection portion 211, the third electrical connection portion 231 and the first electrical connection portion 211 are insulated and hermetically connected, that is, an insulating member 40 is disposed between the third electrical connection portion 231 and the top cover 21.

Fig. 18 is a schematic view of a third structure of a button cell provided by the invention; FIG. 19 is a schematic diagram of a first cross-sectional structure of the conductive device in FIG. 18; FIG. 20 is a schematic diagram of a second cross-sectional structure of the conductive device in FIG. 18; FIG. 21 is a schematic view of a third cross-sectional structure of the conductive member in FIG. 18; fig. 22 is a structural diagram illustrating an application state of the conductive device in fig. 20.

Optionally, the second electrical connection portion 221 integrally disposed with the conductive member 22 is not disposed on the conductive member 22, the conductive member 22 is disposed on a surface of the top cover 21 facing the accommodating cavity 101, a surface of the conductive member 22 abutting against the top cover 21 is a horizontal surface, and the insulating member 40 is disposed between the conductive member 22 and the top cover 21.

The conductive sealing member 23 includes a conductive sealing member body 232, a third electrical connection portion 231, and a bending portion 233. A bending part 233 is arranged between the conductive sealing part body 232 and the third electric connection part 231, the conductive sealing part body 232 and the third electric connection part 231 are perpendicular to the bending part 233, the conductive sealing part body 232 is arranged on the side, away from the accommodating cavity 101, of the conductive part 22, the conductive sealing part body 232 is connected with the conductive part 22 in a welding mode, the third electric connection part 231 protrudes out of the side wall 12, and an insulating part 40 is arranged between the third electric connection part 231 and the top cover 21. Illustratively, the through hole 2101 is a circular hole, the conductive sealing member body 232 is a disk, and the diameter of the through hole 2101 is larger than that of the conductive sealing member body 232.

Illustratively, the top cover 21 is disc-shaped, the through hole 2101 is a circular hole, the conductive member 22 is disc-shaped, the diameter of the through hole 2101 is smaller than that of the conductive member 22, and the diameter of the conductive member 22 is smaller than that of the top cover 21, so that the edge of the conductive member 22 and the edge of the through hole 2101 are at least partially stacked in the radial direction, the through hole 2101 and the conductive member 22 are tightly bonded through the insulating member 40 by heating and pressurizing, and the insulating member 40 under high temperature and high pressure can make the connection between the through hole 2101 and the conductive member 22 tighter, thereby improving the tightness of the button cell.

Since the greater the dimension of the radial single-side lamination of the edge of the conductive member 22 and the edge of the through hole 2101, the better the sealing performance, in one embodiment, the radial single-side lamination portion of the conductive member 22 and the through hole 2101 is greater than or equal to 1mm, and the radial single-side lamination portion of the top cover 21 and the conductive member 22 is greater than or equal to 0.5mm, so that the sealing area between the conductive member 22 and the through hole 2101 is increased, thereby improving the sealing performance between the conductive member 22 and the through hole 2101.

Alternatively, when the conductive member 22 is disposed inside the housing 10, in order to improve the insulation between the third electrical connection part 231 and the first electrical connection part 211, a boss is disposed at one end of the conductive member 22 away from the accommodating chamber 101, the liquid injection port 2221 is disposed on the boss, the center of the boss coincides with the center of the liquid injection port 2221, the boss is disposed in the through hole 2101, and the insulating member 40 is disposed between the boss and the through hole 2101.

Optionally, when the conductive element 22 is disposed on a side of the top cover 21 facing the accommodating chamber 101, a boss is disposed at an end of the conductive element 22 away from the accommodating chamber 101, a counter bore 2222 is disposed on the boss, a center of the counter bore 2222 coincides with a center of the liquid injection port 2221, and the conductive sealing element body 232 is disposed in the counter bore 2222. After electrolyte is injected into the accommodating cavity 101 through the injection port 2221, the joint between the high-conductivity sealing member body 232 and the counter bore 2222 is welded on the outer side of the top cover 21, so that the sealing performance between the high-conductivity sealing member body 232 and the injection port 2221 is improved.

It should be noted that, by providing the counter bore 2222 on the conductive component 22, the conductive sealing member body 232 is located in the counter bore 2222, and a surface of the conductive sealing member 23 facing away from the accommodating cavity 101 is flush with a surface of a side of the conductive component 22 facing away from the accommodating cavity 101. In this way, the overall aesthetic appearance of the button cell can be improved.

Optionally, the conductive seal 23 is provided with thinned regions 2301.

Because the button cell is a closed space, the pressure in the accommodating cavity 101 is relatively high, when the pressure is too high, if explosion occurs, the damage degree is relatively high, and in order to improve the safety and reliability of the button cell, in the invention, the conductive sealing piece 23 is provided with the thinning region 2301, because the pressure bearing capacity of the thinning region 2301 is smaller than that of the region without the thinning region 2301, when the pressure in the button cell is increased to the maximum critical value of the pressure capable of being borne by the thinning region 2301, at this time, the thinning region 2301 can crack or directly crack under the driving of the pressure, the pressure in the button cell can be exhausted and decompressed from the crack or the rupture position of the thinning region 2301, and at this time, the pressure in the cell does not reach the maximum critical value of the pressure capable of being borne by the non-thinning region 2301, therefore, if the cell explodes, the damage force of the cell can be greatly reduced, thereby improving the safety and reliability of the button cell.

According to the button cell provided by the embodiment of the invention, the thinning region 2301 is arranged on the conductive sealing member 23, and the pressure bearing capacity of the thinning region 2301 is smaller than that of the non-thinned region, so that when the pressure in the button cell is increased to the pressure which cannot be borne by the thinning region 2301, the thinning region 2301 can crack or even break, and thus the pressure in the button cell can be exhausted from the thinning region 2301 to release pressure, the purpose that the pressure in the cell can be discharged in advance is realized, the destructive power caused by explosion of the cell is reduced, and the technical problem that the destructive power is larger after explosion due to the fact that the pressure in the cell is too large and cannot be discharged in advance is avoided.

Optionally, the thinning region 2301 is located one side of the conductive sealing piece 23 deviating from the accommodating cavity 101, and the thinning region 2301 is arranged on one side of the conductive sealing piece 23 deviating from the accommodating cavity 101, that is, one side of the conductive sealing piece 23 facing the accommodating cavity 101 is a flat plane, so that when the safety and reliability of the battery are improved, the electrolyte in the accommodating cavity 101 can be prevented from corroding the joint between the thinning region 2301 and the non-thinned region, and the service life of the battery is shortened.

In an alternative embodiment, the side of the conductive sealing element 23 facing away from the receiving space 101 is provided with a recess, which forms the thinned region 2301. The groove is formed on one side, away from the accommodating cavity 101, of the conductive sealing piece 23, so that the groove forms the thinning area 2301, the structure is simple, and the processing cost is low.

Alternatively, thinned region 2301 can be at least one of a cross-shaped recess, an annular recess, or a circular recess.

For example, as shown in fig. 14 and 15, thinned regions 2301 are cross-shaped recesses; as shown in fig. 12 and 13, the thinned region 2301 is a circular groove; as shown in fig. 16 and 17, thinned regions 2301 are a combination of circular recesses and cross-shaped recesses; as shown in fig. 10 and 11, the thinned region 2301 is a circular groove; the thinned region 2301 may also be an elliptical groove, a rectangular groove, or other grooves with any regular shape or a combination of at least two shapes, or may also be a groove with any irregular shape, or may be a combination of regular shapes or irregular shapes, which is not limited herein.

Alternatively, to facilitate the processing of the thinned region 2301, the center of the thinned region 2301 coincides with the center of the pour opening 2221, thus facilitating the centering of the thinned region 2301 during processing when the thinned region 2301 is processed.

In an optional implementation mode, the depth of the groove is 0.01-0.1 mm, so that when the requirement of the conductive sealing piece 23 for meeting the strength during normal operation is met, the button cell can exhaust and release air in advance when the internal pressure is too high, damage caused when the button cell explodes is reduced, and the safety and reliability of the button cell are improved.

Further, the thinned region 2301 and the conductive sealing member 23 may be integrally formed, so that the number of processes for forming the conductive sealing member 23 and the thinned region 2301 is reduced, thereby reducing the processing cost.

Alternatively, the conductive sealing member 23 may be a sheet structure, that is, the conductive sealing member 23 is a sealing sheet, so that a surface of the conductive sealing member 23 facing the accommodating cavity 101 is a flat plane, and thus, the strength of the conductive sealing member 23 may be improved, thereby improving the reliability of the use of the conductive sealing member 23.

In addition, the conductive sealing member 23 is formed as a sealing sheet, that is, the thickness of the conductive sealing member 23 is small, and when the thickness of the conductive sealing member 23 is small, the pressure that can be applied thereto is small, so that when the pressure in the battery exceeds the pressure that can be applied to the conductive sealing member 23, when the battery explodes, the destructive force caused by the explosion of the battery can be reduced.

The present invention also provides an electronic device comprising: the button cell type battery provides electric energy for the electronic equipment body.

The structure of the button cell in the electronic device provided by the invention is the same as that of the button cell, and the button cell can bring the same or similar technical effects, which is not described in detail herein.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

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