CN114024066B - Button cell - Google Patents
Button cell Download PDFInfo
- Publication number
- CN114024066B CN114024066B CN202010738208.9A CN202010738208A CN114024066B CN 114024066 B CN114024066 B CN 114024066B CN 202010738208 A CN202010738208 A CN 202010738208A CN 114024066 B CN114024066 B CN 114024066B
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- CN
- China
- Prior art keywords
- upper cover
- electrode
- tab
- lower cover
- lug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000012212 insulator Substances 0.000 claims abstract description 8
- 239000004020 conductor Substances 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
- H01M10/0427—Button cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention belongs to the technical field of batteries, and relates to a button battery, which comprises an upper cover, a lower cover, an electrode and a soft package battery core; the upper cover is an insulator, and the lower cover is a conductor; the opening end of the upper cover is connected with the opening end of the lower cover to form a cavity for accommodating the soft package battery core in the upper cover and the lower cover; the bottom of the upper cover is supported on the skirt edge of the soft package battery core; the soft package battery core is led out of a first electrode lug and a second electrode lug, wherein one of the first electrode lug and the second electrode lug is a positive electrode lug, and the other is a negative electrode lug; the electrode is arranged on the upper cover and at least partially exposes the top surface of the upper cover; the first tab is connected with the electrode; the second lug is connected to the inner wall of the lower cover. By arranging the upper cover as an insulator, the outer side wall of the opening end of the upper cover and the inner side wall of the opening end of the lower cover can be directly connected without arranging an insulator, so that the size of the button cell can be reduced; and because the bottom of the upper cover is supported on the skirt edge of the soft package battery core, the whole supporting strength of the button battery can be improved.
Description
Technical Field
The invention belongs to the technical field of batteries, and particularly relates to a button battery.
Background
Button cells are also called button cells, which are cells having an external dimension like a small button, generally having a larger diameter and a thinner thickness; button cells are widely used in various miniature electronic products because of their small size. In recent years, with the development of science and technology, button cells are becoming deeper and deeper into people's lives, and it is desirable that the button cells be smaller and smaller in size to meet the requirements of various miniature electronic products while ensuring the safety of the button cells.
In order to prevent short circuit between the upper electrode cover and the lower electrode cover, the upper electrode cover and the lower electrode cover are insulated through an insulating layer or an insulating piece, the assembly is tedious and troublesome, the size of the assembled button cell is large, and the supporting strength of the assembled button cell is poor.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems that the conventional button battery is complicated and troublesome to assemble, the assembled button battery is large in size and the assembled button battery is poor in supporting strength, the button battery is provided.
In order to solve the technical problems, the embodiment of the invention provides a button cell, which comprises an upper cover, a lower cover, an electrode and a soft package cell; the upper cover is an insulator, and the lower cover is a conductor; the outer side wall of the opening end of the upper cover is connected with the inner side wall of the opening end of the lower cover to form a cavity for accommodating the soft package battery cell in the upper cover and the lower cover;
an annular skirt edge is formed on the periphery of the soft package battery core, and the bottom of the upper cover is supported on the skirt edge;
The soft package battery core is led out of a first electrode lug and a second electrode lug, wherein one of the first electrode lug and the second electrode lug is a positive electrode lug, and the other is a negative electrode lug; the electrode is arranged on the upper cover and at least partially exposes the top surface of the upper cover; the first tab is connected with the electrode; the second lug is connected to the inner wall of the lower cover.
Optionally, the upper cover is buckled with the lower cover.
Optionally, a fastening groove is formed in the outer side wall of the opening end of the upper cover, a flange is arranged on the inner side wall of the opening end of the lower cover, and the fastening groove is connected with the flange in a fastening mode.
Optionally, the leading-out positions of the first tab and the second tab are 180 degrees different on the circumference.
Optionally, the upper cover is provided with a first avoidance gap and a second avoidance gap, the first avoidance gap is used for avoiding the first tab, and the second avoidance gap is used for avoiding the second tab.
Optionally, the upper cover is provided with a mounting hole, and the electrode is mounted on the upper cover through the mounting hole.
Optionally, the electrode includes a first conductive portion, a second conductive portion, and a connection portion, the connection portion being disposed on the mounting hole; the first conductive part is arranged at one end of the connecting part and is positioned in the upper cover, and the second conductive part is arranged at the other end of the connecting part and is positioned on the outer surface of the top wall of the upper cover; the first tab is electrically connected with the first conductive portion.
Optionally, the mounting hole is disposed at a central position of the upper cover, and the second conductive portion covers an outer surface of a top wall of the upper cover.
Optionally, the first tab is welded with the electrode, and a first insulating layer is attached to a part of the first tab except for the welding point; the second lug is welded with the inner wall of the lower cover, and a second insulating layer is attached to the part of the second lug outside the welding point.
Optionally, a third insulating layer is attached to the inner side wall of the lower cover, and a fourth insulating layer is attached to the outer side wall of the skirt.
Compared with the prior art, the button battery provided by the embodiment of the invention has the advantages that the upper cover is arranged as the insulator, so that the outer side wall of the opening end of the upper cover and the inner side wall of the opening end of the lower cover can be directly connected without arranging an insulating layer or an insulating piece, the size of the button battery can be reduced under the condition of preventing short circuit between the upper cover and the lower cover, the whole structure of the button battery is more compact, and the whole assembly process is simpler and is convenient to assemble because the insulating layer or the insulating piece is not required to be assembled; and the bottom of the upper cover is supported above the skirt edge of the soft-package battery cell, so that the integral supporting strength of the button battery can be improved.
Drawings
Fig. 1 is a schematic structural diagram of a button cell according to an embodiment of the present invention;
FIG. 2 is one of the cross-sectional views of the button cell of FIG. 1;
FIG. 3 is a second cross-sectional view of the button cell of FIG. 1;
fig. 4 is an exploded view of the button cell of fig. 1;
FIG. 5 is one of the schematic structural views of the upper cover of FIG. 1;
FIG. 6 is a second schematic view of the upper cover in FIG. 1;
FIG. 7 is one of the schematic structural views of the electrode of FIG. 1;
Fig. 8 is a second schematic view of the structure of the electrode in fig. 1.
Reference numerals in the specification are as follows:
1. an upper cover; 11. the first avoidance notch; 12. a second avoidance gap; 13. a buckle groove; 14. a mounting hole;
2. A lower cover; 21. a flange;
3. soft package battery core; 31. a first tab; 32. a second lug; 33. a skirt edge;
4. an electrode; 41. a first conductive portion; 42. a second conductive portion; 43. and a connecting part.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should be understood that the direction or positional relationship indicated by the terms "upper", "lower", etc. are based on the direction or positional relationship shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
As shown in fig. 1-2, the button cell provided by the embodiment of the invention comprises an upper cover 1, a lower cover 2, an electrode 4 and a soft package battery core 3; the upper cover 1 is an insulator, and the lower cover 2 is a conductor; the outer side wall of the opening end of the upper cover 1 is connected with the inner side wall of the opening end of the lower cover 2 to form a cavity for accommodating the soft package battery core 3 inside the upper cover and the lower cover;
an annular skirt edge 33 is formed on the periphery of the soft package battery core 3, and the bottom of the upper cover 1 is supported on the skirt edge 33;
The soft package battery core 3 is led out of a first tab 31 and a second tab 32, wherein one of the first tab 31 and the second tab 32 is a positive electrode tab, and the other is a negative electrode tab; the electrode 4 is arranged on the upper cover 1 and at least partially exposes the top surface of the upper cover 1; the first tab 31 is connected with the electrode 4; the second lug 32 is attached to the inner wall of the lower cover 2.
Compared with the prior art, the button cell provided by the embodiment of the invention has the advantages that the upper cover 1 is arranged as the insulator, so that the outer side wall of the opening end of the upper cover 1 and the inner side wall of the opening end of the lower cover 2 can be directly connected without arranging an insulating layer or an insulating piece, the size of the button cell can be reduced under the condition of preventing short circuit between the upper cover 1 and the lower cover 2, the whole structure of the button cell is more compact, and the whole assembly process is simpler and is convenient for assembly because the insulating layer or the insulating piece is not required to be additionally assembled; at the same time of reducing the insulating layer or insulating piece, the bottom of the upper cover 1 is supported on the skirt edge 33 of the soft package battery core 3, so that the whole supporting strength of the button battery can be improved.
In one embodiment, as shown in fig. 2, the upper cover 1 is snap-connected to the lower cover 2. The upper cover 1 and the lower cover 2 can be conveniently assembled by adopting a buckling connection mode, and the assembly process is simplified.
In an embodiment, the upper cover 1 and the lower cover 2 may be connected by welding, that is, the outer side wall of the open end of the upper cover 1 and the inner side wall of the open end of the lower cover 2 are connected by welding.
Preferably, in order to make the connection effect better, a mode of firstly fastening and then welding the upper cover 1 and the lower cover 2 can also be adopted.
In an embodiment, as shown in fig. 2 and 4, a fastening groove 13 is formed on the outer sidewall of the open end of the upper cover 1, a flange 21 is formed on the inner sidewall of the open end of the lower cover 2, and the fastening groove 13 is fastened to the flange 21. The upper cover 1 and the lower cover 2 can be assembled conveniently by buckling and connecting the buckling groove 13 and the flange 21.
In an embodiment, as shown in fig. 3 and 4, the extraction positions of the first tab 31 and the second tab 32 are 180 degrees different in circumference, so that the first tab 31 and the second tab 32 are extracted conveniently, and interference between the first tab 31 and the second tab 32 can be avoided.
In an embodiment, as shown in fig. 4, 5 and 6, the upper cover 1 is provided with a first avoidance gap 11 and a second avoidance gap 12, the first avoidance gap 11 is used for avoiding a first tab 31, the second avoidance gap 12 is used for avoiding a second tab 32, and the first avoidance gap 11 and the second avoidance gap 12 are arranged, so that after the upper cover 1 and the lower cover 2 are assembled, the battery becomes a semi-sealing structure, and the use safety is improved.
In one embodiment, as shown in fig. 5, the upper cover 1 is provided with a mounting hole 14, and the electrode 4 is mounted on the upper cover 1 through the mounting hole 14. The placement of the electrode 4 on the upper cover 1 is facilitated by the provision of the mounting holes 14. The electrode 4 may be fixed to the upper cover 1 by injection molding, or may be fixed to the upper cover 1 by a patch or the like, which is not limited herein.
In one embodiment, as shown in fig. 7 and 8, the electrode 4 includes a first conductive portion 41, a second conductive portion 42, and a connection portion 43, the connection portion 43 being disposed on the mounting hole 14; the first conductive part 41 is arranged at one end of the connecting part 43 and is positioned in the upper cover 1, and the second conductive part 42 is arranged at the other end of the connecting part 43 and is positioned on the outer surface of the top wall of the upper cover 1; the first tab 31 is electrically connected to the first conductive portion 41. The connection of the first tab 31 and the electrode 4 is facilitated by providing the first conductive portion 41, and the mounting of the electrode 4 on the upper cover 1 is facilitated by providing the connection portion 43.
In an embodiment, as shown in fig. 5, the mounting hole 14 is disposed at the center of the upper cover 1, the second conductive part 42 covers the outer surface of the top wall of the upper cover 1, so that the electrode 4 is conveniently mounted on the upper cover 1, and covering the second conductive part 42 on the outer surface of the top wall of the upper cover 1 can make the conductive area larger, so that the button cell is conveniently used.
In an embodiment, the first tab 31 is welded to the electrode 4, and a first insulating layer (not shown) is attached to a portion of the first tab 31 other than the welding point; the second lug 32 is welded to the inner wall of the lower cover 2, and a second insulating layer (not shown) is attached to a portion of the second lug 32 other than the welding point. The first insulating layer and the second insulating layer can play an insulating role, and are beneficial to preventing the soft package battery core 3 from being short-circuited.
Wherein, spot welding or laser welding can be adopted between the first tab 31 and the electrode 4, but the method is not limited to spot welding and laser welding; spot welding or laser welding may be used between the second lug 32 and the inner wall of the lower cover 2, but is not limited to spot welding and laser welding.
In one embodiment, a third insulating layer is attached to the inner sidewall of the lower cover 2, and a fourth insulating layer is attached to the outer sidewall of the skirt 33. The short circuit of the soft package battery core 3 can be further prevented by arranging the third insulating layer and the fourth insulating layer.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. A button cell is characterized by comprising an upper cover, a lower cover, an electrode and a soft package cell; the upper cover is an insulator, and the lower cover is a conductor; the outer side wall of the opening end of the upper cover is connected with the inner side wall of the opening end of the lower cover to form a cavity for accommodating the soft package battery cell in the upper cover and the lower cover;
an annular skirt edge is formed on the periphery of the soft package battery core, and the bottom of the upper cover is supported on the skirt edge;
The soft package battery core is led out of a first electrode lug and a second electrode lug, wherein one of the first electrode lug and the second electrode lug is a positive electrode lug, and the other is a negative electrode lug; the electrode is arranged on the upper cover and at least partially exposes the top surface of the upper cover; the first tab is connected with the electrode; the second lug is connected to the inner wall of the lower cover;
The upper cover is buckled with the lower cover;
the outer side wall of the opening end of the upper cover is provided with a buckling groove, the inner side wall of the opening end of the lower cover is provided with a flange, and the buckling groove is buckled and connected with the flange;
The upper cover is provided with a mounting hole, and the electrode is mounted on the upper cover through the mounting hole;
The electrode comprises a first conductive part, a second conductive part and a connecting part, and the connecting part is arranged on the mounting hole; the first conductive part is arranged at one end of the connecting part and is positioned in the upper cover, and the second conductive part is arranged at the other end of the connecting part and is positioned on the outer surface of the top wall of the upper cover; the first tab is electrically connected with the first conductive portion.
2. The button cell of claim 1, wherein the lead-out positions of the first tab and the second tab are 180 degrees circumferentially apart.
3. The button cell of claim 2, wherein the upper cover is provided with a first avoidance notch and a second avoidance notch, the first avoidance notch is used for avoiding the first tab, and the second avoidance notch is used for avoiding the second tab.
4. The button cell of claim 1, wherein the mounting hole is provided at a central position of the upper cover, and the second conductive portion covers an outer surface of a top wall of the upper cover.
5. The button cell of claim 1, wherein the first tab is welded to the electrode, and a first insulating layer is attached to a portion of the first tab other than the welding point; the second lug is welded with the inner wall of the lower cover, and a second insulating layer is attached to the part of the second lug outside the welding point.
6. The button cell of claim 5, wherein a third insulating layer is attached to the inner sidewall of the lower cover, and a fourth insulating layer is attached to the outer sidewall of the skirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738208.9A CN114024066B (en) | 2020-07-28 | 2020-07-28 | Button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738208.9A CN114024066B (en) | 2020-07-28 | 2020-07-28 | Button cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114024066A CN114024066A (en) | 2022-02-08 |
| CN114024066B true CN114024066B (en) | 2024-08-23 |
Family
ID=80054110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010738208.9A Active CN114024066B (en) | 2020-07-28 | 2020-07-28 | Button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114024066B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212380518U (en) * | 2020-07-28 | 2021-01-19 | 曙鹏科技（深圳）有限公司 | Button cell |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8617732B2 (en) * | 2011-06-20 | 2013-12-31 | International Business Machines Corporation | Battery end cap |
| CN208062190U (en) * | 2018-04-17 | 2018-11-06 | 广东国光电子有限公司 | A kind of flexible packing lithium ion battery |
| CN109546017B (en) * | 2018-11-21 | 2024-07-26 | 新余赣锋电子有限公司 | Battery containing soft package battery cell |
| CN211088318U (en) * | 2019-10-08 | 2020-07-24 | 重庆市紫建电子有限公司 | Semimetal shell button cell |
| CN111354909B (en) * | 2020-04-24 | 2023-12-26 | 福建南平延平区南孚新能源科技有限公司 | Button cell electrode shell and electrode lug traceless welding method, welding structure and product |
-
2020
- 2020-07-28 CN CN202010738208.9A patent/CN114024066B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212380518U (en) * | 2020-07-28 | 2021-01-19 | 曙鹏科技（深圳）有限公司 | Button cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114024066A (en) | 2022-02-08 |
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