CN111525072A - Button cell - Google Patents
Button cell Download PDFInfo
- Publication number
- CN111525072A CN111525072A CN202010468476.3A CN202010468476A CN111525072A CN 111525072 A CN111525072 A CN 111525072A CN 202010468476 A CN202010468476 A CN 202010468476A CN 111525072 A CN111525072 A CN 111525072A
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- China
- Prior art keywords
- negative
- positive
- connector
- electrically connected
- electrode
- Prior art date
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
- H01M50/109—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure of button or coin shape
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/581—Devices or arrangements for the interruption of current in response to temperature
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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
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/10—Temperature sensitive devices
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
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- 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
Abstract
The invention provides a button battery. The button cell comprises a shell, a cell body and an explosion-proof piece, wherein a containing cavity is arranged in the shell, a through hole is formed in the shell, and the cell body is located in the containing cavity. At least part of the structure of the explosion-proof piece is arranged in the accommodating cavity, the explosion-proof piece seals the through hole and is electrically connected with the shell and the battery body, and the explosion-proof piece is used for communicating the through hole with the accommodating cavity and disconnecting the electric connection between the shell and the battery body at a preset temperature. When the temperature in the shell reaches the preset temperature, the explosion-proof piece can be communicated with the through hole and the accommodating cavity, so that gas generated by the battery body can be discharged through the through hole in time, the explosion accident caused by overlarge internal pressure of the shell is avoided, in addition, the explosion-proof piece can also be disconnected from the electric connection between the shell and the battery body, the temperature is prevented from continuously rising, and the safety performance of the button battery is greatly improved.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of batteries, in particular to a button battery.
[ background of the invention ]
Button cells, also known as button cells, are widely used in electronic products, such as electronic watches, electronic scales, electronic toys, counters, cameras, etc., due to their small size.
The existing button battery mainly comprises a shell and a battery body which is arranged inside the shell and used for generating electrochemical action, when abnormal conditions such as short circuit of a positive electrode and a negative electrode occur to the button battery, the temperature can rise sharply, the pressure inside the shell can rise due to gas generated by the battery body, and when the pressure inside the shell rises to the maximum pressure which can be borne by the shell, explosion can occur, so that danger is very high.
Therefore, it is necessary to provide a button cell with a venting function.
[ summary of the invention ]
The invention aims to provide a button battery to solve the technical problem that the conventional button battery is easy to explode under abnormal conditions.
The technical scheme of the invention is as follows:
a button cell, comprising:
the shell is internally provided with an accommodating cavity, and a through hole is formed in the shell;
the battery body is positioned in the accommodating cavity; and
and at least part of the structure of the explosion-proof piece is arranged in the accommodating cavity, the explosion-proof piece seals the through hole and is electrically connected with the shell and the battery body, and the explosion-proof piece is used for communicating the through hole with the accommodating cavity at a preset temperature and disconnecting the electrical connection between the shell and the battery body.
In one embodiment, at least a portion of the structure of the rupture member melts at the predetermined temperature.
In one embodiment, the preset temperature is 55 ℃ to 150 ℃.
In one embodiment, the button cell further comprises an electrical connector located in the accommodating cavity, and the explosion-proof piece is arranged between the shell and the electrical connector.
In one embodiment, the outer case includes a positive electrode can, a negative electrode can, and an insulator for insulating the positive electrode can from the negative electrode can;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the through hole is arranged on the positive electrode shell, the explosion-proof piece is electrically connected with the positive electrode connecting piece and the positive electrode shell, and the negative electrode connecting piece is electrically connected with the negative electrode shell.
In one embodiment, the outer case includes a positive electrode can, a negative electrode can, and an insulator for insulating the positive electrode can from the negative electrode can;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the through hole is arranged on the negative electrode shell, the explosion-proof piece is electrically connected with the negative electrode connecting piece and the negative electrode shell, and the positive electrode connecting piece is electrically connected with the positive electrode shell.
In one embodiment, the outer case includes a positive electrode can, a negative electrode can, and an insulator for insulating the positive electrode can from the negative electrode can;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the positive shell with the negative pole shell all is equipped with the through-hole, anodal connecting piece with the positive shell passes through explosion-proof electric connection, the negative pole connecting piece with the negative pole shell passes through explosion-proof electric connection.
In one embodiment, the outer casing includes a positive casing, a negative casing and an insulator for insulating the positive casing and the negative casing, the positive casing includes a positive end wall and a positive side wall connected to each other, the negative casing includes a negative end wall and a negative side wall connected to each other, the positive end wall and the negative end wall are disposed opposite to each other, the positive side wall is located on the inner side of the negative side wall, and the through hole penetrates through the negative side wall, the insulator and the positive side wall;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the explosion-proof piece is electrically connected with the anode side wall and the anode connecting piece, and the cathode connecting piece is electrically connected with the cathode end wall.
In one embodiment, the outer casing includes a positive casing, a negative casing and an insulator for insulating the positive casing and the negative casing, the positive casing includes a positive end wall and a positive side wall connected to each other, the negative casing includes a negative end wall and a negative side wall connected to each other, the positive end wall and the negative end wall are disposed opposite to each other, the positive side wall is located outside the negative side wall, and the through hole penetrates through the positive side wall, the insulator and the negative side wall;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the explosion-proof piece is electrically connected with the negative electrode side wall and the negative electrode connecting piece, and the positive electrode connecting piece is electrically connected with the positive electrode end wall.
In one embodiment, the through hole is provided in a plurality, and the through holes are distributed on the shell at intervals.
The invention has the beneficial effects that:
foretell button cell when the temperature in the shell reaches and predetermines the temperature, explosion-proof piece can communicate through-hole and holding chamber to the produced gas of cell body can in time discharge through the through-hole, avoids the too big and emergence explosion accident of shell internal pressure, and not only, explosion-proof piece can also break off the electricity between shell and the cell body and be connected, avoids the temperature to continue to rise, very big improvement button cell's security performance.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a button cell in one embodiment;
fig. 2 is an exploded view of the button cell shown in fig. 1;
FIG. 3 is a cross-sectional view of the button cell shown in FIG. 1;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a cross-sectional view of a button cell in another embodiment;
fig. 6 is a cross-sectional view of a button cell in yet another embodiment.
[ detailed description ] embodiments
The invention is further described with reference to the following figures and embodiments.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that numerous technical details are set forth in order to provide a better understanding of the present invention in its various embodiments. However, the technical solution claimed in the present invention can be implemented without these technical details and various changes and modifications based on the following embodiments.
As shown in fig. 1 to 3, a button cell 10 of an embodiment includes a housing 100, a cell body 200, an electrical connector and an explosion-proof element 400, wherein the housing 100 is provided with a receiving cavity 102, the cell body 200, the electrical connector and the explosion-proof element 400 are all disposed in the receiving cavity 102, the cell body 200 is electrically connected to the electrical connector, the housing 100 is further provided with a through hole 104, and the explosion-proof element 400 is normally used for sealing the through hole 104 to isolate the receiving cavity 102 from an external environment. When the button cell 10 is abnormal and the temperature in the case 100 rises to the preset temperature, the explosion-proof member 400 is used for communicating the through hole 104 and the accommodating cavity 102, so that the gas generated by the cell body 200 can be discharged through the through hole in time, the pressure in the case 100 is reduced, the explosion accident caused by the overlarge internal pressure of the case 100 is avoided, and the safety performance of the button cell 10 is greatly improved.
In the present embodiment, the outer case 100 includes a positive electrode can 110, a negative electrode can 120, and an insulator 130, the positive electrode can 110, the negative electrode can 120, and the insulator 130 form the receiving cavity 102 therebetween, and the insulator 130 serves to insulate the positive electrode can 110 from the negative electrode can 120, and in addition, the insulator 130 serves to seal a region between the positive electrode can 110 and the negative electrode can 120.
In one embodiment, referring to fig. 4, the positive casing 110 includes a positive end wall 112 and a positive side wall 114 connected to each other, the negative casing 120 includes a negative end wall 122 and a negative side wall 124 connected to each other, the positive end wall 112 is disposed opposite to the negative end wall 122, and the positive side wall 114 is disposed inside the negative side wall 124, that is, the positive casing 110 is inserted into the negative casing 120.
More specifically, the positive electrode side wall 114 includes a first section 1142, a bent section 1144 and a second section 1146 sequentially connected in a direction from the positive electrode end wall 112 to the negative electrode end wall 124, the first section 1142 is connected to the positive electrode end wall 112, and the bent section 1144 is bent outward from the first section 1142.
The insulator 130 includes a first insulating section 132, a transition section 134 and a second insulating section 136 that are connected in order in the direction from the positive end wall 112 to the negative end wall 124, the first insulating section 132 is attached to the first section 1142, the transition section 134 is matched with the bending section 1144, a groove is formed at one end of the second insulating section 136 far away from the transition section 134, and the second section 1146 is inserted into the groove.
The negative side wall 124 includes a fastening portion 1242 and an extension portion 1244 sequentially connected in a direction from the positive end wall 112 to the negative end wall 124, the fastening portion 1242 is pressed on the transition section 134, and the extension portion 1244 is connected to the negative end wall 122.
In the present embodiment, the positive electrode can 110 and the negative electrode can 120 are integrally molded, and the manufacturing process is simple. In addition, the positive electrode can 110, the negative electrode can 120 and the insulator 130 are tightly fitted, so that the button cell 10 can be effectively prevented from air leakage, liquid leakage and the like, and the sealing performance of the button cell 10 is improved.
In another embodiment, the positive side wall 114 may also be located outside the negative side wall 124, in which case the negative can 120 is inserted into the positive can 110. Accordingly, the shapes and the fitting relationship of the positive electrode can 110, the negative electrode can 120, and the insulator 130 may be adaptively adjusted with reference to the embodiment shown in fig. 3.
The battery body 200 includes a body 210, a positive electrode 220 and a negative electrode 230, and the positive electrode 220 and the negative electrode 230 are electrically connected to the body 210. Specifically, the body 210 is generally formed by laminating or winding a positive electrode sheet to which the positive electrode 220 is connected, a negative electrode sheet to which the negative electrode 230 is connected, and a separator in an overlapping state.
The electrical connector comprises a positive connector 310 and a negative connector 320, wherein the positive connector 310 is electrically connected with the positive electrode 220, and the negative connector 320 is electrically connected with the negative electrode 230.
It is understood that the positive electrode 220, the positive connector 310 and the positive electrode tab can be an integral structure, and the negative electrode 230, the negative connector 320 and the negative electrode tab can be an integral structure.
In one embodiment, the explosion proof member 400 is melted at a predetermined temperature. When the button cell 10 is abnormally charged or discharged or the positive and negative electrodes are short-circuited, the temperature in the case 100 is rapidly increased, and when the temperature in the case 100 is increased to a preset temperature, the explosion-proof part 400 is melted, so that the through hole 104 communicates the accommodating cavity 102 with the external environment, and the gas in the case 100 is conveniently discharged.
In the present embodiment, the preset temperature is 55 to 150 ℃, and it is understood that the melting point of the explosion-proof member 400 is 55 to 150 ℃.
In other embodiments, the vent 400 may further include a first region and a second region that are connected to each other, the first region being configured to seal the through-hole 104, and the second region being connected to the housing 100, the first region having a lower melting point than the second region, i.e., the structure of the vent 400 in the first region will melt before the structure of the vent 400 in the second region.
In the present embodiment, the explosion-proof member 400 is made of a conductive hot-melt material, and also has a function of electrically connecting the housing 100 and the electrical connector. That is to say, the explosion-proof piece 400 can not only melt at a preset temperature to communicate the through hole 104 with the accommodating cavity 102, but also disconnect the electrical connection between the housing 100 and the electrical connector after melting, so as to avoid the temperature of the button cell 10 from rising, and further improve the safety performance of the button cell 10.
In this embodiment, the conductive hot-melt material may be a metal material, or may be a composite material containing a conductive medium, such as conductive fiber, conductive plastic, and the like.
In one embodiment, as shown in fig. 3, the through-hole 104 is provided on the positive electrode can 110, and more specifically, the through-hole 104 is provided on the positive electrode end wall 112 of the positive electrode can 110. In this embodiment, the explosion-proof member 400 is electrically connected to the positive electrode connector 310 and the positive electrode can 110, and the negative electrode connector 320 is electrically connected to the negative electrode can 120.
In one embodiment, as shown in fig. 5, the through hole 104 is formed in the negative casing 120, and more specifically, the through hole 104 is formed in the negative end wall 122 of the negative casing 120. In this embodiment, the explosion-proof member 400 is electrically connected to the negative electrode connector 320 and the negative electrode can 120, and the positive electrode connector 310 is electrically connected to the positive electrode can 110.
In one embodiment, the positive casing 110 and the negative casing 120 are both provided with through holes 104, and more specifically, the positive end wall 112 of the positive casing 110 is provided with through holes 104, and the negative end wall 122 of the negative casing 120 is also provided with through holes 104. In this embodiment, the explosion-proof member 400 is correspondingly disposed at the through hole 104 of the positive end wall 112, the explosion-proof member 400 is correspondingly disposed at the through hole 104 of the negative end wall 122, the positive connector 310 is electrically connected to the positive casing 110 through the explosion-proof member 400, and the negative connector 320 is electrically connected to the negative casing 120 through the explosion-proof member 400.
In one embodiment, as shown in fig. 6, the via 104 extends through the cathode sidewall 124, the insulator 130, and the anode sidewall 114.
When the anode side wall 114 is located at the inner side of the cathode side wall 124, the explosion-proof member 400 is electrically connected to the anode side wall 114 and the anode connector 310, at this time, the cathode connector 320 may directly contact with the cathode end wall 122 to achieve electrical connection, or a through hole may be disposed on the cathode end wall 122, and the electrical connection between the cathode connector 320 and the cathode end wall 122 is achieved through the explosion-proof member 400.
When the anode side wall 114 is located outside the cathode side wall 124, the explosion-proof member 400 is electrically connected to the cathode side wall 124 and the cathode connecting member 320, at this time, the anode connecting member 310 may directly contact with the anode end wall 112 to achieve electrical connection, or a through hole may be disposed on the anode end wall 112, and the electrical connection between the anode connecting member 310 and the anode end wall 112 is achieved through the explosion-proof member 400.
Referring to fig. 3, 5 and 6, the explosion-proof member 400 is located in the receiving cavity 102, and in some embodiments, a part of the structure of the explosion-proof member 400 may also extend into the through hole 104, but does not protrude from the through hole 104, so as to ensure the smooth installation of the button cell 10.
In the present embodiment, only one through hole 104 is provided, and correspondingly, one explosion-proof material 400 is also provided. In other embodiments, the through holes 104 may be disposed in a plurality at the same position, for example, on the positive end wall 112 or the negative end wall 122, and the plurality of through holes 104 are distributed at intervals. One explosion proof member 400 may be provided corresponding to the plurality of through holes 104, and one explosion proof member 400 covers the plurality of through holes 104 at the same time. The explosion-proof members 400 may be provided in plural numbers, one to one corresponding to the plural through holes 104, or each explosion-proof member 400 may cover a portion of the plural through holes 104.
In the present embodiment, the through hole 104 is a circular hole, and in other embodiments, the shape of the through hole 104 may also be a square, a triangle, and the like.
As can be seen from fig. 1, the button cell 10 of the present embodiment is a cylindrical cell, and in other embodiments, the button cell 10 may also be a square cell or a special-shaped cell.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A button cell, comprising:
the shell is internally provided with an accommodating cavity, and a through hole is formed in the shell;
the battery body is positioned in the accommodating cavity; and
and at least part of the structure of the explosion-proof piece is arranged in the accommodating cavity, the explosion-proof piece seals the through hole and is electrically connected with the shell and the battery body, and the explosion-proof piece is used for communicating the through hole with the accommodating cavity at a preset temperature and disconnecting the electrical connection between the shell and the battery body.
2. The button cell according to claim 1, wherein at least a portion of the structure of the explosion-proof piece melts at the predetermined temperature.
3. Button cell according to claim 2, characterised in that the preset temperature is 55-150 ℃.
4. The button cell of claim 1, further comprising an electrical connector located within the receiving cavity, wherein the explosion proof member is disposed between the housing and the electrical connector.
5. The button cell according to claim 4, wherein the outer case comprises a positive electrode case, a negative electrode case, and an insulator for insulating the positive electrode case from the negative electrode case;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the through hole is arranged on the positive electrode shell, the explosion-proof piece is electrically connected with the positive electrode connecting piece and the positive electrode shell, and the negative electrode connecting piece is electrically connected with the negative electrode shell.
6. The button cell according to claim 4, wherein the outer case comprises a positive electrode case, a negative electrode case, and an insulator for insulating the positive electrode case from the negative electrode case;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the through hole is arranged on the negative electrode shell, the explosion-proof piece is electrically connected with the negative electrode connecting piece and the negative electrode shell, and the positive electrode connecting piece is electrically connected with the positive electrode shell.
7. The button cell according to claim 4, wherein the outer case comprises a positive electrode case, a negative electrode case, and an insulator for insulating the positive electrode case from the negative electrode case;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the positive shell with the negative pole shell all is equipped with the through-hole, anodal connecting piece with the positive shell passes through explosion-proof electric connection, the negative pole connecting piece with the negative pole shell passes through explosion-proof electric connection.
8. The button cell according to claim 4, wherein the housing comprises a positive casing, a negative casing and an insulator for insulating the positive casing from the negative casing, the positive casing comprises a positive end wall and a positive side wall which are connected with each other, the negative casing comprises a negative end wall and a negative side wall which are connected with each other, the positive end wall is arranged opposite to the negative end wall, the positive side wall is arranged at the inner side of the negative side wall, and the through hole penetrates through the negative side wall, the insulator and the positive side wall;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the explosion-proof piece is electrically connected with the anode side wall and the anode connecting piece, and the cathode connecting piece is electrically connected with the cathode end wall.
9. The button cell according to claim 4, wherein the housing comprises a positive casing, a negative casing and an insulator for insulating the positive casing from the negative casing, the positive casing comprises a positive end wall and a positive side wall which are connected with each other, the negative casing comprises a negative end wall and a negative side wall which are connected with each other, the positive end wall is arranged opposite to the negative end wall, the positive side wall is arranged outside the negative side wall, and the through hole penetrates through the positive side wall, the insulator and the negative side wall;
the battery body comprises a body, a positive electrode and a negative electrode, wherein the positive electrode and the negative electrode are electrically connected with the body;
the electric connector comprises a positive connector and a negative connector, the positive connector is electrically connected with the positive electrode, and the negative connector is electrically connected with the negative electrode;
the explosion-proof piece is electrically connected with the negative electrode side wall and the negative electrode connecting piece, and the positive electrode connecting piece is electrically connected with the positive electrode end wall.
10. The button cell as claimed in claim 1, wherein the through hole is provided in plurality, and the plurality of through holes are distributed on the housing at intervals.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468476.3A CN111525072A (en) | 2020-05-28 | 2020-05-28 | Button cell |
| PCT/CN2020/094498 WO2021237776A1 (en) | 2020-05-28 | 2020-06-05 | Button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468476.3A CN111525072A (en) | 2020-05-28 | 2020-05-28 | Button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111525072A true CN111525072A (en) | 2020-08-11 |
Family
ID=71911230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468476.3A Withdrawn CN111525072A (en) | 2020-05-28 | 2020-05-28 | Button cell |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111525072A (en) |
| WO (1) | WO2021237776A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563629A (en) * | 2020-11-20 | 2021-03-26 | 曙鹏科技（深圳）有限公司 | Pouch battery and method for producing a first pouch half shell |
| WO2022077961A1 (en) * | 2020-10-12 | 2022-04-21 | 广东微电新能源有限公司 | Solid-state button battery |
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| JPS61294755A (en) * | 1985-06-24 | 1986-12-25 | Matsushita Electric Ind Co Ltd | Sealed battery |
| JPH05174805A (en) * | 1991-01-22 | 1993-07-13 | Chung Pak Investment Ltd | Improvement in battery |
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| CN106601960A (en) * | 2016-12-30 | 2017-04-26 | 重庆市紫建电子有限公司 | Button battery and manufacturing method therefor |
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| WO2020009477A1 (en) * | 2018-07-06 | 2020-01-09 | 주식회사 엘지화학 | Secondary battery and manufacturing method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10313830A1 (en) * | 2003-03-21 | 2004-09-30 | Varta Microbattery Gmbh | Galvanic element in the form of a button cell and method for producing a galvanic element |
| CN2899125Y (en) * | 2005-12-28 | 2007-05-09 | 比亚迪股份有限公司 | Battery positive cap and battery therewith |
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2020
- 2020-05-28 CN CN202010468476.3A patent/CN111525072A/en not_active Withdrawn
- 2020-06-05 WO PCT/CN2020/094498 patent/WO2021237776A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597282A (en) * | 1969-07-09 | 1971-08-03 | Gulton Ind Inc | Rechargeable sealed secondary battery of the button type |
| JPS61294755A (en) * | 1985-06-24 | 1986-12-25 | Matsushita Electric Ind Co Ltd | Sealed battery |
| JPH05174805A (en) * | 1991-01-22 | 1993-07-13 | Chung Pak Investment Ltd | Improvement in battery |
| CN200976367Y (en) * | 2006-10-31 | 2007-11-14 | 比亚迪股份有限公司 | Battery cap and battery having the same |
| CN106601960A (en) * | 2016-12-30 | 2017-04-26 | 重庆市紫建电子有限公司 | Button battery and manufacturing method therefor |
| WO2020009477A1 (en) * | 2018-07-06 | 2020-01-09 | 주식회사 엘지화학 | Secondary battery and manufacturing method therefor |
| CN110400895A (en) * | 2019-07-30 | 2019-11-01 | 宁德时代新能源科技股份有限公司 | Battery module, secondary battery and top cover assembly thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077961A1 (en) * | 2020-10-12 | 2022-04-21 | 广东微电新能源有限公司 | Solid-state button battery |
| CN112563629A (en) * | 2020-11-20 | 2021-03-26 | 曙鹏科技（深圳）有限公司 | Pouch battery and method for producing a first pouch half shell |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021237776A1 (en) | 2021-12-02 |
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