CN111370600A - Battery structure and electronic equipment - Google Patents
Battery structure and electronic equipment Download PDFInfo
- Publication number
- CN111370600A CN111370600A CN202010212600.XA CN202010212600A CN111370600A CN 111370600 A CN111370600 A CN 111370600A CN 202010212600 A CN202010212600 A CN 202010212600A CN 111370600 A CN111370600 A CN 111370600A
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- Prior art keywords
- battery
- cover
- tab
- top cover
- cap
- 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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- 239000012790 adhesive layer Substances 0.000 claims description 13
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- H01M50/147—Lids or covers
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention provides a battery structure and an electronic device, the battery structure includes: the battery comprises an upper cover, a lower cover, a battery core, a first lug and a second lug, wherein the upper cover comprises a top cover and a first cap ring, the first end of the first lug is arranged at the joint between the top cover and the first cap ring, the second end of the first lug is connected with the battery core, and the battery core is arranged in the upper cover and the lower cover. The embodiment of the invention can enhance the firmness of the connection of the lugs.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a battery structure and an electronic device.
Background
With the development and progress of science and technology, the market demand for wearable devices, such as wireless earphones, sports watches, and hand rings, etc., is increasing, and button cells are an important component in wearable devices. In the structure of the button cell in the current market, the tabs are welded on the surface of the outer cover of the cell, and the firmness of tab connection is poor.
Disclosure of Invention
The embodiment of the invention aims to provide a battery structure and electronic equipment, and aims to solve the problem that the connection firmness of lugs in the battery structure is poor.
In order to achieve the above object, an embodiment of the present invention provides a battery structure and an electronic device, where the battery structure includes: the battery comprises an upper cover, a lower cover, a battery core, a first lug and a second lug, wherein the upper cover comprises a top cover and a first cap ring, the first end of the first lug is arranged at the joint between the top cover and the first cap ring, the second end of the first lug is connected with the battery core, and the battery core is arranged in the upper cover and the lower cover.
Optionally, the junction between the top cover and the first cap band comprises a wedge-shaped structure, and the wedge-shaped structure comprises a conical surface which is tapered from the edge of the top cover to the center.
Optionally, a circle of convex ring with a V-shaped cross section is arranged at the edge of the top cover, and the conical surface of the top cover is the outer surface of the convex ring; or,
the edge of the top cover is provided with a circle of chamfer, and the conical surface of the top cover is a chamfer surface; or,
the edge of the top cover is provided with a flanging, and the conical surface of the top cover is the outer surface of the flanging; or the included angle between the generatrix of the conical surface of the top cover and the lower surface of the top cover is 26-61 degrees.
Optionally, the distance from the joint of the conical surface of the top cover and the surface of the first cap ring to the edge of the top cover is 0.03-0.5 mm.
Optionally, a first strip-shaped groove is formed in the conical surface of the wedge-shaped structure, the first strip-shaped groove extends along the conical bus, and the first tab is located in the first strip-shaped groove.
Optionally, a joint of the first tab and the battery cell is a first position, and a distance from the first position to the center of the battery cell is greater than a distance from the first position to the edge of the battery cell; the battery cell is a winding battery cell.
Optionally, a first end of the second tab is connected to the lower cover, and a second end of the second tab is connected to the battery cell.
Optionally, the lower cover includes a bottom cover and a second cap ring, and the first end of the second tab is disposed at a junction between the bottom cover and the second cap ring; or the first end of the second tab is arranged on the inner surface of the lower cover.
Optionally, the battery structure further includes: the adhesive layer is arranged between the upper cover and the battery core and/or between the lower cover and the battery core, the material of the adhesive layer is an insulating material, and the adhesive layer contains a sticky substance.
The embodiment of the invention also provides electronic equipment, which is characterized by comprising the battery structure provided by the embodiment of the invention.
One of the above technical solutions has the following advantages or beneficial effects:
in an embodiment of the present invention, the battery structure includes: the battery comprises an upper cover, a lower cover, a battery core, a first lug and a second lug, wherein the upper cover comprises a top cover and a first cap ring, the first end of the first lug is arranged at the joint between the top cover and the first cap ring, the second end of the first lug is connected with the battery core, and the battery core is arranged in the upper cover and the lower cover. Compared with the prior art that the tab is welded on the surface of the battery outer cover, the embodiment of the invention can enhance the firmness of the tab connection.
Drawings
FIG. 1 is a schematic diagram of a cross-section of a cell structure provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a cross-section of another cell structure provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram of a cross-section of another cell structure provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram of a cross-section of another cell structure provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a battery structure according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a structural schematic diagram of a battery structure, as shown in fig. 1, including: the battery comprises an upper cover 11, a lower cover 12, a battery cell 13, a first tab 14 and a second tab 15, wherein the upper cover 11 comprises a top cover 111 and a first cap ring 112, a first end of the first tab 14 is arranged at a joint between the top cover 111 and the first cap ring 112, a second end of the first tab 14 is connected with the battery cell 13, and the battery cell 13 is arranged inside the upper cover 11 and the lower cover 12.
In the embodiment of the present invention, the first end of the first tab 14 is disposed at the joint between the top cover 111 and the first cap ring 112, and the first end of the first tab 14 is fixed in the upper cover 11.
The upper cover 11, the lower cover 12, the first tab 14, and the second tab 15 are metal conductors and have electrical conductivity. In the battery structure, the first tab 14 and the second tab 15 can lead electricity out of the battery cell 13, and the upper cover 11 and the lower cover 12 can be used as different electrodes in the battery structure.
In the embodiment of the present invention, the battery type of the battery structure is not limited, for example, the battery structure may be a rechargeable battery, and the battery structure may also be a primary battery, which is not limited in this embodiment of the present invention.
In the embodiment of the present invention, the external shape of the battery structure is not limited, for example, the external shape of the battery structure may be a cylindrical shape, and the external shape of the battery structure may also be a rectangular parallelepiped shape.
In the embodiment of the present invention, the type of the battery cell 13 is not limited, for example, the battery cell 13 may be a winding battery cell, and may also be a laminated battery cell, and the embodiment of the present invention is not limited thereto.
In the embodiment of the present invention, a combination manner between the top cover 111, the first cap ring 112, the lower cover 12, the battery cell 13, the first tab 14, and the second tab 15 is not limited, for example, in a combination process of the top cover 111, the first cap ring 112, the lower cover 12, the battery cell 13, the first tab 14, and the second tab 15, an injection molding process may be used for integral molding, an extrusion molding process may also be used for extrusion molding, and a laser welding process may also be used, which is not limited in the embodiment of the present invention.
In the embodiment of the present invention, since the first end of the first tab 14 is disposed at the joint between the top cover 111 and the first cap ring 112, compared to the prior art in which the tab is welded on the surface of the outer cover of the battery, the embodiment of the present invention can enhance the firmness of the tab connection.
As an alternative embodiment, as shown in fig. 2, the junction between the top cover 111 and the first cap band 112 comprises a wedge-shaped structure comprising a conical surface tapering from the edge of the top cover 111 to the center.
In this embodiment, the wedge-shaped structure is arranged to make the combination of the top cover 111 and the first cap ring 112 tighter, and the first end of the first tab 14 is arranged at the wedge-shaped structure between the top cover 111 and the first cap ring 112, so that the firmness of the connection of the first tab 14 is enhanced.
As an optional embodiment, a circle of convex ring with a V-shaped cross section is arranged at the edge of the top cover 111, and the conical surface of the top cover 111 is the outer surface of the convex ring; or,
a circle of chamfer is arranged at the edge of the top cover 111, and the conical surface of the top cover 111 is a chamfer surface; or,
the edge of the top cover 111 is provided with a flanging, and the conical surface of the top cover 111 is the outer surface of the flanging; or,
the included angle between the generatrix of the conical surface of the top cover 111 and the lower surface of the top cover 111 is 26-61 degrees.
This embodiment improves the firmness of the connection between the top cap 111 and the first cap ring 112, and improves the sealability of the battery structure.
As an alternative embodiment, as shown in fig. 2, the distance from the junction of the conical surface of the top cover 111 and the surface of the first cap ring 112 to the edge of the top cover 111 is 0.03-0.5 mm.
In this embodiment, as shown in fig. 2, a distance from a joint between the conical surface of the top cap 111 and the surface of the first cap ring 112 to the edge of the top cap 111 is 0.03-0.5mm, the first end of the first tab 14 is disposed at the joint between the top cap 111 and the first cap ring 112, so as to avoid the first tab 14 from being exposed, the first tab 14 is completely embedded in the battery structure, and the first end of the first tab 14 is completely embedded in the upper cover 11, so as to improve the sealing performance of the battery structure.
As an alternative embodiment, the conical surface of the wedge-shaped structure is provided with a first strip-shaped groove, the first strip-shaped groove extends along a conical generatrix, and the first tab 14 is located in the first strip-shaped groove.
In this embodiment, the wedge-shaped structure is provided with a spatial structure for placing the first tab 14, the conical surface of the wedge-shaped structure is provided with the first strip-shaped groove, the first tab 14 is located in the first strip-shaped groove, the first tab 14 is closely matched with the first strip-shaped groove, and in addition, the first strip-shaped groove extends along the conical bus, so that the placement position of the first tab 14 is standardized, and the firmness of tab connection is enhanced.
A special space structure is arranged at the joint of the top cover 111 and the first ring cap 112, so that the first tab 14 can be placed, and the sealing performance of the battery structure is improved.
As an alternative embodiment, as shown in fig. 1, the connection point of the first tab 14 and the battery cell 13 is a first position, and the distance from the first position to the center of the battery cell 13 is greater than the distance from the first position to the edge of the battery cell 13; the battery cell 13 is a winding battery cell.
In this embodiment, as shown in fig. 1, the first tab 14 is led out from the edge of the first side of the battery cell 13, so that a possible contact area between the first tab 14 and the battery cell 13 is reduced, a possibility of contact between the first tab 14 and a pole piece in the battery cell 13 is reduced, and a possibility of internal short circuit of the battery structure is reduced.
As an alternative embodiment, as shown in fig. 1, a first end of the second tab 15 is connected to the lower cover 12, and a second end of the second tab 15 is connected to the battery cell 13.
In this embodiment, the second pole lug 15 is led out from the second side of the battery cell 13, the first side of the battery cell 13 and the second side of the battery cell 13 are two opposite sides of the battery cell 13, the first pole lug 14 is connected to the first side of the battery cell 13, and the second pole lug 15 is connected to the second side of the battery cell 13.
In this embodiment, the position where the second end of the second tab 15 is connected to the battery cell 13 is not limited, for example, as shown in fig. 3, the connection position of the second tab 15 and the battery cell 13 may be a second position, a distance from the second position to the center of the battery cell 13 is greater than a distance from the second position to the edge of the battery cell 13, and the second tab 15 may be led out from the edge of the second side of the battery cell 13, so that a possible contact area between the second tab 15 and the battery cell 13 may be reduced, a possibility of contact between the second tab 15 and a pole piece in the battery cell 13 may be reduced, and a possibility of internal short circuit of the battery structure may be reduced.
As an alternative embodiment, as shown in fig. 3, the lower cover 12 includes a bottom cover 121 and a second cap ring 122, and the first end of the second pole ear 15 is disposed at the junction between the bottom cover 121 and the second cap ring 122; alternatively, the first end of the second tab 15 is disposed on the inner surface of the lower cover.
In this embodiment, the first end of the second tab 15 is disposed at the joint between the bottom cover 121 and the second cap ring 122, and the second tab 15 is fixed in the lower cover 12, so that the firmness of the connection of the second tab 15 is enhanced.
When the first end of the second tab 15 is disposed on the inner surface of the lower cover 12, the difficulty of manufacturing the battery structure is reduced in the manufacturing process of the battery.
The second electrode lug 15 is completely embedded in the battery structure, and the first end of the second electrode lug 15 is completely embedded in the lower cover 12, so that the second electrode lug 15 is prevented from being exposed, and the sealing performance of the battery structure is improved.
As an alternative embodiment, as shown in fig. 4, the battery structure further includes: the adhesive layer 16 is disposed between the upper cover 11 and the battery cell 13 and/or between the lower cover 12 and the battery cell 13, the material of the adhesive layer 16 is an insulating material, and the adhesive layer 16 contains a viscous substance.
As shown in fig. 4, the adhesive layer 16 contains a substance having adhesiveness, the adhesive layer 16 is disposed between the upper cover 11 and the battery cell 13 and/or between the lower cover 12 and the battery cell 13, the adhesive layer 16 can be used to adhere between the upper cover 11 and the battery cell 13 and/or between the lower cover 12 and the battery cell 13, and meanwhile, the material of the adhesive layer 16 is an insulating material, so that the contact between the upper cover 1 and the lower cover 2 is avoided, and the possibility of internal short circuit of the battery is reduced.
As shown in fig. 5, fig. 5 is a schematic view of a battery structure according to an embodiment of the present invention, and the battery structure shown in fig. 5 is a cylindrical structure.
In an embodiment of the present invention, the battery structure includes: the battery comprises an upper cover, a lower cover, a battery core, a first lug and a second lug, wherein the upper cover comprises a top cover and a first cap ring, the first end of the first lug is arranged at the joint between the top cover and the first cap ring, the second end of the first lug is connected with the battery core, and the battery core is arranged in the upper cover and the lower cover. Compared with the prior art in which the tab is welded on the surface of the battery outer cover, the embodiment of the invention can enhance the firmness of tab connection.
In addition, in an embodiment of the present invention, an electronic device including the battery structure according to any of the embodiments provided in the embodiment of the present invention is also provided.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A battery structure, comprising: the battery comprises an upper cover, a lower cover, a battery core, a first lug and a second lug, wherein the upper cover comprises a top cover and a first cap ring, the first end of the first lug is arranged at the joint between the top cover and the first cap ring, the second end of the first lug is connected with the battery core, and the battery core is arranged in the upper cover and the lower cover.
2. The battery structure of claim 1, wherein the junction between the top cap and the first cap rim comprises a wedge-shaped structure comprising a conical surface tapering from the edge of the top cap toward the center.
3. The battery structure of claim 2, wherein the edge of the top cover is provided with a ring of convex rings with V-shaped cross sections, and the conical surface of the top cover is the outer surface of the convex rings; or,
the edge of the top cover is provided with a circle of chamfer, and the conical surface of the top cover is a chamfer surface; or,
the edge of the top cover is provided with a flanging, and the conical surface of the top cover is the outer surface of the flanging; or,
the included angle between the generatrix of the conical surface of the top cover and the lower surface of the top cover is 26-61 degrees.
4. The battery structure of claim 2, wherein the distance from the junction of the conical surface of the top cap and the surface of the first cap rim to the edge of the top cap is 0.03-0.5 mm.
5. The battery structure of claim 2, wherein the conical surface of the wedge structure is provided with a first bar groove extending along the conical generatrix, the first tab being located in the first bar groove.
6. The battery structure of claim 1, wherein the junction of the first tab and the cell is a first location, and the first location is a greater distance from the center of the cell than the first location is from the edge of the cell; the battery cell is a winding battery cell.
7. The battery structure of claim 1, wherein a first end of the second tab is coupled to the lower cover and a second end of the second tab is coupled to the cell.
8. The battery structure of claim 7, wherein the lower cover includes a bottom cover and a second cap ring, the first end of the second tab being disposed at a junction between the bottom cover and the second cap ring; or the first end of the second tab is arranged on the inner surface of the lower cover.
9. The battery structure of claim 1, further comprising: the adhesive layer is arranged between the upper cover and the battery core and/or between the lower cover and the battery core, the material of the adhesive layer is an insulating material, and the adhesive layer contains a sticky substance.
10. An electronic device, characterized in that the electronic device comprises a battery structure according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010212600.XA CN111370600A (en) | 2020-03-24 | 2020-03-24 | Battery structure and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010212600.XA CN111370600A (en) | 2020-03-24 | 2020-03-24 | Battery structure and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111370600A true CN111370600A (en) | 2020-07-03 |
Family
ID=71212592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010212600.XA Pending CN111370600A (en) | 2020-03-24 | 2020-03-24 | Battery structure and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111370600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437410A (en) * | 2020-08-04 | 2021-09-24 | 珠海冠宇电池股份有限公司 | Button cell and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102694202A (en) * | 2012-06-29 | 2012-09-26 | 广东凯德能源科技有限公司 | Button type lithium ion battery |
| US20140315061A1 (en) * | 2010-09-14 | 2014-10-23 | Fang Wang | Rechargeable Lithium Ion Button Cell Battery |
| CN110379943A (en) * | 2019-06-20 | 2019-10-25 | 金能电池(东莞)有限公司 | A kind of column battery of belt glue pad |
| CN210006766U (en) * | 2019-05-15 | 2020-01-31 | 广东微电新能源有限公司 | Non-crimping battery structure |
| CN211265529U (en) * | 2020-03-24 | 2020-08-14 | 珠海冠宇电池股份有限公司 | Battery structure and electronic equipment |
-
2020
- 2020-03-24 CN CN202010212600.XA patent/CN111370600A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140315061A1 (en) * | 2010-09-14 | 2014-10-23 | Fang Wang | Rechargeable Lithium Ion Button Cell Battery |
| CN102694202A (en) * | 2012-06-29 | 2012-09-26 | 广东凯德能源科技有限公司 | Button type lithium ion battery |
| CN210006766U (en) * | 2019-05-15 | 2020-01-31 | 广东微电新能源有限公司 | Non-crimping battery structure |
| CN110379943A (en) * | 2019-06-20 | 2019-10-25 | 金能电池(东莞)有限公司 | A kind of column battery of belt glue pad |
| CN211265529U (en) * | 2020-03-24 | 2020-08-14 | 珠海冠宇电池股份有限公司 | Battery structure and electronic equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113437410A (en) * | 2020-08-04 | 2021-09-24 | 珠海冠宇电池股份有限公司 | Button cell and preparation method thereof |
| CN113437410B (en) * | 2020-08-04 | 2024-01-30 | 珠海冠宇电池股份有限公司 | Button cell and preparation method thereof |
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Address after: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant after: Zhuhai CosMX Battery Co.,Ltd. Address before: 519180 No. 209 Pearl Peak Avenue, Jingan Town, Doumen District, Zhuhai City, Guangdong Province Applicant before: ZHUHAI COSLIGHT BATTERY Co.,Ltd. |
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