CN110752401A - Button cell and manufacturing method thereof - Google Patents
Button cell and manufacturing method thereof Download PDFInfo
- Publication number
- CN110752401A CN110752401A CN201910941330.3A CN201910941330A CN110752401A CN 110752401 A CN110752401 A CN 110752401A CN 201910941330 A CN201910941330 A CN 201910941330A CN 110752401 A CN110752401 A CN 110752401A
- Authority
- CN
- China
- Prior art keywords
- shell
- lower shell
- upper shell
- positive
- negative
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
-
- 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)
- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a button cell and a manufacturing method thereof, wherein the cell comprises a conductive shell, an insulating gasket, a roll core and electrolyte, wherein the conductive shell is divided into an upper shell and a lower shell, and a sealing ring is arranged between the upper shell and the lower shell; insulation gaskets are arranged between the winding core and the upper shell and between the winding core and the lower shell, the winding core comprises a positive plate, a diaphragm and a negative plate, the diaphragm is arranged between the positive plate and the negative plate, the insulation gaskets are sleeved on the diaphragm, and a positive electrode tab of the positive plate or a negative electrode tab of the negative plate extends out of a gap of the insulation gaskets and is respectively in contact connection with the lower shell or the upper shell; the electrolyte is filled in the closed cavity. The button cell is directly connected with the lower shell or the upper shell in a contact way through the blank aluminum foil area or the blank copper foil area of the positive and negative pole pieces respectively to connect the positive and negative poles; the edges of the foil are in interference fit with the upper shell and the lower shell, and the edges of the blank metal foil can be bent and deformed to ensure tight contact with the upper shell and the lower shell to form a charging or discharging loop.
Description
Technical Field
The invention belongs to the technical field of button cells, and particularly relates to a button cell and a manufacturing method thereof.
Background
At present, button batteries are increasingly widely applied to digital batteries, especially earphone batteries. Conventional button cells employ two process routes: one is made in a laminated mode, and the other is in conventional winding, and the two modes need to use a metal conductor as a connecting strip to connect a winding core or a laminated core with a shell cover. The disadvantages of the laminated approach are that the efficiency is too low and the cost of the battery is too high; the winding type has the disadvantage that the rate performance of the battery is poor, and the winding type is not suitable for large-rate quick charging. The invention has the advantages of both lamination and winding, namely good rate capability and high production efficiency.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a button cell and a manufacturing method thereof, which have the advantages of both a laminated manufacturing method and a winding manufacturing method, namely high production efficiency and good rate capability.
In order to achieve the purpose, the invention adopts the technical scheme that: a button cell comprises a conductive shell, an insulating gasket, a winding core and electrolyte, wherein the conductive shell is divided into an upper shell and a lower shell, the upper shell is buckled on the inner side of the lower shell to form a closed cavity, and a sealing ring is arranged between the upper shell and the lower shell; the winding core is arranged in a closed cavity formed by the upper shell and the lower shell, insulating gaskets are arranged between the winding core and the upper shell and between the winding core and the lower shell, the winding core comprises a positive plate, a diaphragm and a negative plate, the diaphragm is arranged between the positive plate and the negative plate, the insulating gaskets are sleeved on the diaphragm, and a positive pole lug of the positive plate or a negative pole lug of the negative plate extends out of a gap of the insulating gaskets and is respectively connected with the lower shell or the upper shell in a contact manner; the electrolyte is filled in the closed cavity.
Preferably, the positive plate comprises a positive active substance and a blank aluminum foil area, wherein the positive active substance is lithium cobaltate or a ternary material; the negative plate comprises a negative active material and a blank copper foil area, wherein the negative active material is graphite.
Preferably, the thickness of the blank aluminum foil area of the positive plate is 1-50um, and the thickness of the blank copper foil area of the negative plate is 1-50 um.
Preferably, the insulating gasket is spiral and made of insulating materials such as PP and the like, and the thickness of the insulating gasket is 0.001-5 mm.
Preferably, the contact connection between the blank aluminum foil area of the positive plate and the blank copper foil area of the lower shell and the contact connection between the blank copper foil area of the negative plate and the upper shell are single-point contact or multi-point contact.
Preferably, the electrolyte is in a liquid, solid or gel state.
The specific manufacturing method of the button cell comprises the following steps:
(1) forming a winding core by winding the positive plate, the negative plate and the diaphragm, so that a positive electrode tab and a negative electrode tab leak from two sides of the winding core;
(2) sleeving an insulating gasket on the diaphragm to enable the positive pole lug and the negative pole lug to extend out of a gap of the insulating sheet;
(3) placing the winding core in the step (2) into the lower shell of the conductive shell;
(4) buckling an upper shell of the conductive shell on a lower shell;
(5) electrolyte is filled into a closed cavity formed by the upper shell and the lower shell;
(6) and a sealing ring is arranged between the upper shell and the lower shell, and then the sealing ring is sealed by sealing oil to form the closed button cell.
Compared with the prior art, the invention has the beneficial effects that: the button cell directly connects the blank aluminum foil area of the positive plate of the winding core or the blank copper foil area of the negative plate with the lower shell or the upper shell in a contact way respectively to connect the positive and negative electrodes; the edges of the foil are in interference fit with the upper shell and the lower shell, and the edges of the blank metal foil can be bent and deformed to ensure tight contact with the upper shell and the lower shell to form a charging or discharging loop. The manufacturing method of the battery can improve the production efficiency and the rate capability of the battery.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a structural view of a positive plate according to the present invention;
FIG. 3 is a structural diagram of a negative plate according to the present invention;
fig. 4 is a view showing the structure of the insulating gasket of the present invention.
In the figure: 101-upper shell, 102-lower shell, 103-sealing ring, 104-positive plate, 105-positive aluminum foil tab, 106-diaphragm, 107-negative plate, 108-negative copper foil tab, 109-insulating gasket, 201-positive active material, 202-blank aluminum foil area, 301-negative active material, 302-blank copper foil area.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.
As shown in fig. 1-4, one embodiment of the present invention: a button cell comprises a conductive shell, an insulating gasket 109, a winding core and electrolyte, wherein the conductive shell is divided into an upper shell 101 and a lower shell 102, the upper shell 101 is buckled on the inner side of the lower shell 102, the size of the upper shell 101 is smaller than that of the lower shell 102, a closed cavity is formed inside the upper shell 101 and the lower shell 102 after the upper shell and the lower shell are buckled, and a sealing ring 103 is arranged between the upper shell 101 and the lower shell 102; the winding core is arranged in a closed cavity formed by the upper shell 101 and the lower shell 102, insulating gaskets 109 are arranged between the winding core and the upper shell 101 and the lower shell 102, the winding core comprises a positive plate 104, a diaphragm 106 and a negative plate 107, the diaphragm 106 is arranged between the positive plate 104 and the negative plate 107, the insulating gaskets 109 are sleeved on the diaphragm 106, a positive aluminum foil tab 105 of the positive plate 104 or a negative copper foil tab 108 of the negative plate 107 extends out of a gap of the insulating gaskets 109 and is respectively in contact connection with the lower shell 102 or the upper shell 101; the electrolyte is filled in the closed cavity. Wherein, the electrolyte can be in a liquid state, a solid state or a gel state.
Specifically, as shown in fig. 2 and 3: the positive plate 104 comprises a positive active material 201 and a blank aluminum foil area 202, and the positive active material 101 is lithium cobaltate or a ternary material; the negative electrode sheet 107 comprises a negative electrode active material 301 and a blank copper foil area 302, wherein the negative electrode active material 301 is graphite.
The thickness of the blank aluminum foil area 202 of the positive plate 104 is 1-50um, and the thickness of the blank copper foil area 302 of the negative plate 107 is 1-50 um.
As shown in fig. 4: the insulating gasket 109 is spiral and made of insulating materials such as PP and the like, and the thickness is 0.001-5 mm. The insulating gasket 109 can protect the insulation of the copper foil and the aluminum foil and ensure the close contact between the copper foil and the aluminum foil and the shell.
The blank aluminum foil area 202 of the positive plate 104 is in single-point contact or multi-point contact with the lower shell 102, and the blank copper foil area 302 of the negative plate 107 is in multi-point contact with the upper shell 101. Specifically, the blank aluminum foil area 202 and the blank copper foil area 302 may or may not be deformed when they are brought into contact with each other.
The specific manufacturing method of the button cell comprises the following steps:
(1) forming a winding core by winding the positive plate, the negative plate and the diaphragm, so that a positive electrode tab and a negative electrode tab leak from two sides of the winding core;
(2) sleeving an insulating gasket on the diaphragm to enable the positive pole lug and the negative pole lug to extend out of a gap of the insulating sheet;
(3) placing the winding core in the step (2) into the lower shell of the conductive shell;
(4) buckling an upper shell of the conductive shell on a lower shell;
(5) electrolyte is filled into a closed cavity formed by the upper shell and the lower shell;
(6) and a sealing ring is arranged between the upper shell and the lower shell, and then the sealing ring is sealed by sealing oil to form the closed button cell.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A button cell comprising a conductive casing, an insulating gasket (109), a winding core and electrolyte, characterized in that: the conductive shell is divided into an upper shell (101) and a lower shell (102), the upper shell (101) is buckled on the inner side of the lower shell (102) to form a closed cavity, and a sealing ring (103) is arranged between the upper shell (101) and the lower shell (102); the winding core is arranged in a closed cavity formed by the upper shell (101) and the lower shell (102), insulating gaskets (109) are arranged between the winding core and the upper shell (101) and between the winding core and the lower shell (102), the winding core comprises a positive plate (104), a diaphragm (106) and a negative plate (107), the diaphragm (106) is arranged between the positive plate (104) and the negative plate (107), the insulating gaskets (109) are sleeved on the diaphragm (106), and a positive electrode lug (105) of the positive plate (104) or a negative electrode lug (108) of the negative plate (107) extends out of a gap of the insulating gaskets (109) and is respectively in contact connection with the lower shell (102) or the upper shell (101); the electrolyte is filled in the closed cavity.
2. The button cell according to claim 1, characterized in that: the positive plate (104) comprises a positive active material (201) and a blank aluminum foil area (202), and the negative plate (107) comprises a negative active material (301) and a blank copper foil area (302).
3. The button cell according to claim 2, characterized in that: the positive electrode active material (201) is lithium cobaltate or a ternary material, and the negative electrode active material (301) is graphite.
4. The button cell according to claim 3, characterized in that: the thickness of the blank aluminum foil area (202) of the positive plate (104) is 1-50um, and the thickness of the blank copper foil area (302) of the negative plate (107) is 1-50 um.
5. The button cell according to claim 4, wherein: the insulating gasket (109) is spiral and made of PP and other insulating materials, and the thickness of the insulating gasket is 0.001-5 mm.
6. The button cell according to claim 5, characterized in that: the blank aluminum foil area (202) of the positive plate (104) is in single-point contact or multi-point contact with the lower shell (102) and the blank copper foil area (302) of the negative plate (107) is in contact with the upper shell (101).
7. Button cell according to any of claims 1 to 6, characterized in that: the electrolyte is in a liquid state, a solid state or a gel state.
8. A manufacturing method of a button cell is characterized by comprising the following steps: comprises the following steps
(1) Forming a winding core by winding the positive plate, the negative plate and the diaphragm, so that a positive electrode tab and a negative electrode tab leak from two sides of the winding core;
(2) sleeving an insulating gasket on the diaphragm to enable the positive pole lug and the negative pole lug to extend out of a gap of the insulating sheet;
(3) placing the winding core in the step (2) into the lower shell of the conductive shell;
(4) buckling an upper shell of the conductive shell on a lower shell;
(5) electrolyte is filled into a closed cavity formed by the upper shell and the lower shell;
(6) and a sealing ring is arranged between the upper shell and the lower shell, and then the sealing ring is sealed by sealing oil to form the closed button cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941330.3A CN110752401A (en) | 2019-09-30 | 2019-09-30 | Button cell and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941330.3A CN110752401A (en) | 2019-09-30 | 2019-09-30 | Button cell and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110752401A true CN110752401A (en) | 2020-02-04 |
Family
ID=69277612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910941330.3A Pending CN110752401A (en) | 2019-09-30 | 2019-09-30 | Button cell and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110752401A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112952180A (en) * | 2021-01-13 | 2021-06-11 | 中银（宁波）电池有限公司 | Winding button cell with diaphragm as electrode substrate and manufacturing method |
| CN113193274A (en) * | 2021-04-14 | 2021-07-30 | 国研新能(深圳)技术有限公司 | Battery and electronic equipment |
| WO2021226969A1 (en) * | 2020-05-14 | 2021-11-18 | 宁德新能源科技有限公司 | Battery and electric apparatus having same |
| US20220021087A1 (en) * | 2020-07-14 | 2022-01-20 | Ningde Amperex Technology Limited | Battery and electric device containing same |
| CN114361661A (en) * | 2021-05-21 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Square shell battery cell and battery module |
| CN114374000A (en) * | 2022-01-12 | 2022-04-19 | 江苏正力新能电池技术有限公司 | Battery and energy storage device |
| WO2022077961A1 (en) * | 2020-10-12 | 2022-04-21 | 广东微电新能源有限公司 | Solid-state button battery |
| WO2023000629A1 (en) * | 2021-07-23 | 2023-01-26 | 重庆市紫建新能源有限公司 | Tab-free lithium ion battery and manufacturing method therefor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461503A (en) * | 2000-08-09 | 2003-12-10 | 松下电器产业株式会社 | Coin-shaped battery |
| CN101728574A (en) * | 2009-12-04 | 2010-06-09 | 王昉 | Buckled lithium-ion storage battery with single-wall structure |
| JP4505569B2 (en) * | 2003-01-31 | 2010-07-21 | 日伸工業株式会社 | Drawing method |
| CN202695639U (en) * | 2012-06-29 | 2013-01-23 | 广东凯德能源科技有限公司 | Clamping type lithium battery |
| CN203631692U (en) * | 2013-12-30 | 2014-06-04 | 普天新能源车辆技术有限公司 | Battery |
| CN104332647A (en) * | 2013-04-19 | 2015-02-04 | 王昉 | Rechargeable lithium ion button cell battery |
| CN109671987A (en) * | 2017-10-13 | 2019-04-23 | 北京好风光储能技术有限公司 | A kind of coiling lithium slurry battery |
-
2019
- 2019-09-30 CN CN201910941330.3A patent/CN110752401A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1461503A (en) * | 2000-08-09 | 2003-12-10 | 松下电器产业株式会社 | Coin-shaped battery |
| JP4505569B2 (en) * | 2003-01-31 | 2010-07-21 | 日伸工業株式会社 | Drawing method |
| CN101728574A (en) * | 2009-12-04 | 2010-06-09 | 王昉 | Buckled lithium-ion storage battery with single-wall structure |
| CN202695639U (en) * | 2012-06-29 | 2013-01-23 | 广东凯德能源科技有限公司 | Clamping type lithium battery |
| CN104332647A (en) * | 2013-04-19 | 2015-02-04 | 王昉 | Rechargeable lithium ion button cell battery |
| CN203631692U (en) * | 2013-12-30 | 2014-06-04 | 普天新能源车辆技术有限公司 | Battery |
| CN109671987A (en) * | 2017-10-13 | 2019-04-23 | 北京好风光储能技术有限公司 | A kind of coiling lithium slurry battery |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021226969A1 (en) * | 2020-05-14 | 2021-11-18 | 宁德新能源科技有限公司 | Battery and electric apparatus having same |
| US20220021087A1 (en) * | 2020-07-14 | 2022-01-20 | Ningde Amperex Technology Limited | Battery and electric device containing same |
| WO2022077961A1 (en) * | 2020-10-12 | 2022-04-21 | 广东微电新能源有限公司 | Solid-state button battery |
| CN112952180A (en) * | 2021-01-13 | 2021-06-11 | 中银（宁波）电池有限公司 | Winding button cell with diaphragm as electrode substrate and manufacturing method |
| CN113193274A (en) * | 2021-04-14 | 2021-07-30 | 国研新能(深圳)技术有限公司 | Battery and electronic equipment |
| CN113193274B (en) * | 2021-04-14 | 2022-06-10 | 国研新能(深圳)技术有限公司 | Battery and electronic equipment |
| CN114361661A (en) * | 2021-05-21 | 2022-04-15 | 北京卫蓝新能源科技有限公司 | Square shell battery cell and battery module |
| CN114361661B (en) * | 2021-05-21 | 2024-04-19 | 北京市蓝鹏瑞驰科技有限公司 | Square shell cell and battery module |
| WO2023000629A1 (en) * | 2021-07-23 | 2023-01-26 | 重庆市紫建新能源有限公司 | Tab-free lithium ion battery and manufacturing method therefor |
| CN114374000A (en) * | 2022-01-12 | 2022-04-19 | 江苏正力新能电池技术有限公司 | Battery and energy storage device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110752401A (en) | Button cell and manufacturing method thereof | |
| CN209691795U (en) | A kind of chargeable lithium ion battery with hard shell | |
| CN109713298B (en) | Lithium ion battery and preparation method thereof | |
| CN211088318U (en) | Semimetal shell button cell | |
| CN105958124B (en) | A kind of lithium ion battery and preparation method thereof | |
| CN204333071U (en) | For battery casing assembly and there is its battery | |
| CN102347512B (en) | Large-capacity lithium ion battery | |
| CN211654976U (en) | Button type lithium battery without electrode lugs | |
| CN216354304U (en) | Pole piece and battery | |
| CN111952514B (en) | Battery with a battery cell | |
| JP3238559U (en) | ultra-thin lithium battery | |
| CN104218264A (en) | Nickel-hydrogen battery and manufacturing method thereof | |
| CN103441237A (en) | Button type lithium ion battery and chain type lithium ion battery pack | |
| US20230126021A1 (en) | Battery | |
| US10050300B2 (en) | Electrochemical cell with multi-faceted geometry | |
| CN207530032U (en) | A kind of lithium ion cell polar ear of high sealing liquid-leakage preventing | |
| CN212113877U (en) | Lithium ion battery positive and negative plate structure and lithium ion battery | |
| CN109786843B (en) | High-rate needle type lithium ion battery | |
| CN206774588U (en) | A kind of full lug quadrate lithium battery | |
| WO2023115393A1 (en) | Electrochemical apparatus, battery module and electric apparatus | |
| CN107591555B (en) | Secondary battery | |
| CN115513607A (en) | Low-loss and high-space utilization rate lithium ion battery full-tab structure and preparation method thereof | |
| CN203800137U (en) | Nickel-metal hydride (Ni-MH) battery | |
| CN103456912B (en) | Chain type Li-ion batteries piles | |
| CN203445176U (en) | Chained lithium ion battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 405400 building 1-4, Puli industrial new area, Zhaojia street, Kaizhou District, Chongqing Applicant after: Chongqing Zijian Electronic Co.,Ltd. Address before: 405400 building 1-4, Puli industrial new area, Zhaojia street, Kaizhou District, Chongqing Applicant before: CHONGQING VDL ELECTRONICS Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |
|
| RJ01 | Rejection of invention patent application after publication |