CN216015453U - Button cell - Google Patents
Button cell Download PDFInfo
- Publication number
- CN216015453U CN216015453U CN202121946053.4U CN202121946053U CN216015453U CN 216015453 U CN216015453 U CN 216015453U CN 202121946053 U CN202121946053 U CN 202121946053U CN 216015453 U CN216015453 U CN 216015453U
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- plate
- pole
- polar plate
- insulating
- sealing
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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
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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
- 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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Abstract
The utility model provides a button cell, which comprises a shell, a top cover component and a pole core, wherein the shell is of a semi-closed structure with one end open; the top cover assembly seals the opening of the shell, so that a cavity for accommodating the pole core is formed between the top cover assembly and the shell, the top cover assembly comprises a first pole plate, a second pole plate and a sealing assembly, and the periphery of the second pole plate is connected with the edge of the opening of the shell; the sealing assembly comprises an insulating sealing member and a plurality of connecting members, wherein the insulating sealing member is arranged between the first polar plate and the second polar plate; the plurality of connectors penetrate through the first polar plate, the sealing element and the second polar plate so as to form insulation sealing between the first polar plate and the second polar plate; the pole core is respectively and electrically communicated with the first pole plate and the second pole plate, and/or the pole core is respectively and electrically communicated with the first pole plate and the shell. The button cell provided by the utility model has the advantage that the insulation and the sealing performance of the button cell are reliable by arranging the sealing assembly.
Description
Technical Field
The utility model relates to the technical field of lithium batteries, in particular to a button cell battery.
Background
With the wider application of intelligent wearable products, people have wider and wider requirements on small-size lithium ion button type secondary rechargeable batteries (button type lithium ion batteries for short). Button lithium ion battery is more and more being applied to intelligence wearing product, for example be used for wireless bluetooth headset etc. along with button lithium ion battery's application is more and more wide, for example earphone etc. also more and more high to the requirement of battery. The installation of top cap and casing needs to satisfy insulating and sealed in current button cell, and current button cell leakproofness is relatively poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a button cell aiming at the problem that the design of the insulating sealing structure of the existing button cell is complex.
The utility model provides a button cell, which comprises a shell, a top cover component and a pole core, wherein the shell is of a semi-closed structure with one end open; the top cover assembly closes the opening of the shell, so that a cavity for accommodating the pole core is formed between the top cover assembly and the shell, the top cover assembly comprises a first pole plate, a second pole plate and a sealing assembly, and the periphery of the second pole plate is connected with the edge of the opening of the shell; the seal assembly includes an insulating seal disposed between the first and second pole plates and a plurality of connectors; a plurality of connectors penetrate through the first polar plate, the insulating sealing element and the second polar plate so as to form insulating sealing between the first polar plate and the second polar plate; the pole cores are respectively electrically connected with the first pole plate and the second pole plate, and/or the pole cores are respectively electrically connected with the first pole plate and the shell.
Optionally, the center lines of the first polar plate, the second polar plate and the insulating sealing member are overlapped, the insulating sealing member and the second polar plate are both annular, the inner edge of the insulating sealing member extends out of the inner edge of the second polar plate, and the outer edge of the insulating sealing member extends out of the outer edge of the first polar plate; the first polar plate, the second polar plate and the insulating sealing element are provided with a plurality of through holes at intervals, the through holes penetrate through the first polar plate, the second polar plate and the insulating sealing element, and the connecting pieces penetrate through the through holes in a one-to-one correspondence mode.
Optionally, the connecting piece includes a first abutting portion, a second abutting portion and a connecting portion, the connecting portion is in interference connection with the through hole, the periphery of the connecting portion presses the insulating sealing member, and one surface, close to the first pole plate, of the through hole on the insulating sealing member is pressed and deformed by the connecting portion and abuts against the first pole plate; one surface, close to the second polar plate, of the through hole in the insulating sealing element is extruded and deformed by the connecting part and is abutted against the second polar plate; the first abutting portion and the second abutting portion are arranged at two ends of the connecting portion respectively, the first abutting portion abuts against the first pole plate, and the second abutting portion abuts against the second pole plate, so that the first pole plate and the second pole plate extrude the insulating sealing piece to deform.
Optionally, in a direction away from the connecting portion, an outer diameter of the first abutting portion gradually expands to abut against one end of the through hole; the outer diameter of the second abutting portion is gradually enlarged to abut against the other end of the through hole in a direction away from the connecting portion.
Optionally, the insulating seal is an insulating seal ring.
Optionally, the first electrode plate is a positive electrode plate, and the second electrode plate is a negative electrode plate; the first polar plate is provided with a liquid injection hole, a sealing block is arranged in the liquid injection hole, and the outer edge of the sealing block is connected with the first polar plate in a sealing mode.
Optionally, the first polar plate is provided with a flow guide piece with two open ends facing the direction of the cavity, the flow guide piece is arranged at the liquid injection hole, and the sealing block is embedded in the flow guide piece and is hermetically connected with the flow guide piece.
Optionally, the pole core is a winding core or a lamination, the pole core includes a first tab and a second tab, the first tab is electrically connected to the first pole plate, and the second tab is electrically connected to the second pole plate.
In the utility model, the insulating sealing element is arranged between the first polar plate and the second polar plate, and the plurality of connecting pieces penetrate through the first polar plate, the insulating sealing element and the second polar plate, so that the insulating sealing between the first polar plate and the second polar plate is realized, and the reliability and the safety of the button cell are improved. The first pole plate and the second pole plate are connected in an insulation and sealing mode through the connecting piece and the insulation sealing piece, the structure is simple, and installation is convenient.
Drawings
Fig. 1 is an exploded view of a button cell battery according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a button cell according to an embodiment of the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
As shown in fig. 1 and fig. 2, a button cell according to an embodiment of the present invention includes a case 1, a top cap assembly 2, and a pole piece 3, where the case 1 is a semi-closed structure with one end open; the top cover assembly 2 closes the opening of the housing 1, so that a cavity 11 for accommodating the pole core 3 is formed between the top cover assembly 2 and the housing 1, the top cover assembly 2 comprises a first pole plate 21, a second pole plate 22 and a sealing assembly, the periphery of the second pole plate 22 is connected with the opening edge of the housing 1, and specifically, the periphery of the second pole plate 22 is welded with the opening edge of the housing 1. The sealing assembly includes an insulating seal 23 and a plurality of connectors 24, the insulating seal 23 being disposed between the first and second pole plates 21 and 22. A plurality of the connectors 24 pass through the first electrode plate 21, the insulating seal 23 and the second electrode plate 22 to form an insulating seal between the first electrode plate 21 and the second electrode plate 22. The pole core 3 is electrically connected to the first pole plate 21 and the second pole plate 22, respectively, and/or the pole core 3 is electrically connected to the first pole plate 21 and the housing 1, respectively.
In the embodiment, by arranging the insulating sealing member 23 between the first pole plate 21 and the second pole plate 22, and connecting the first pole plate 21, the insulating sealing member 23 and the second pole plate 22 through the plurality of connecting members 24, the insulating sealing between the first pole plate 21 and the second pole plate 22 is realized, and the reliability and the safety of the button cell are improved. The insulating and sealing connection between the first polar plate 21 and the second polar plate 22 is realized by arranging the connecting piece 24 and the insulating sealing piece 23, the structure is simple, and the installation is convenient.
As shown in fig. 1 and 2, in some embodiments of the present invention, the center lines of the first polar plate 21, the second polar plate 22 and the insulating seal 23 are coincident, the insulating seal 23 and the second polar plate 22 are both annular, the inner edge of the insulating seal 23 extends out of the inner edge of the second polar plate 22, and the outer edge of the insulating seal 23 extends out of the outer edge of the first polar plate 21. A plurality of through holes 25 penetrating through the first pole plate, the second pole plate and the insulating sealing member are arranged on the first pole plate 21, the second pole plate 22 and the insulating sealing member 23 at intervals, and a plurality of connecting members 24 penetrate through the plurality of through holes 25 in a one-to-one correspondence manner. Specifically, the through holes 25 on the first pole plate 21 are arranged at intervals along the periphery of the first pole plate 21, the through holes 25 on the insulating sealing member 23 are arranged with the insulating sealing member 23 as a center, and the through holes 25 on the second pole plate 22 are arranged along the inner edge of the second pole plate 22.
As shown in fig. 1 and 2, in some embodiments of the present invention, the connecting member 24 includes a first abutting portion 241, a second abutting portion 242, and a connecting portion 243, the connecting portion 243 is in interference connection with the through hole 25, an outer periphery of the connecting portion 243 presses the insulating seal 23, and one surface of the through hole 25 of the insulating seal 23, which is close to the first electrode plate 21, is pressed and deformed by the connecting portion 243 and abuts against the first electrode plate 21. One surface of the through hole 25 of the insulating sealing member 23, which is close to the second electrode plate 22, is deformed by the pressing of the connecting portion 243, and abuts against the second electrode plate 22. The first abutting portion 241 and the second abutting portion 242 are respectively disposed at both ends of the connecting portion 243, the first abutting portion 241 abuts against the first electrode plate 21, and the second abutting portion 242 abuts against the second electrode plate 22, so that the first electrode plate 21 and the second electrode plate 22 press the insulating seal 23 to deform, thereby achieving the insulating and sealing connection between the first electrode plate 21 and the second electrode plate 22.
Specifically, the connecting piece 24 is a rivet, the periphery of the rivet is coated with an insulating material, the rivet passes through the through hole 25, sequentially passes through the first pole plate 21, the insulating sealing piece 23 and the second pole plate 22, the rivet is upset by using a tool, the rivet presses the outer walls of the through hole 25 on the first pole plate 21, the insulating sealing piece 23 and the second pole plate 22 to form interference connection with the through hole 25, the two ends of the rivet are hammered and deformed to be respectively abutted against the first pole plate 21 and the second pole plate 22, the surface of the insulating sealing piece 23 and the outer wall of the through hole 25 are compressed and deformed, and insulating sealing is formed between the first pole plate 21 and the second pole plate 22.
As shown in fig. 1 and 2, in some embodiments of the present invention, the outer diameter of the first abutting portion 241 is gradually enlarged to abut against one end of the through hole 25 in a direction away from the connecting portion 243. The outer diameter of the second abutting portion 242 is gradually enlarged to abut against the other end of the through hole 25 in a direction away from the connecting portion 243.
As shown in fig. 1 and 2, in some embodiments of the present invention, the insulating sealing member 23 is an insulating sealing ring and has elasticity to facilitate the sealing between the first pole plate 21 and the second pole plate 22.
As shown in fig. 1 and 2, in some embodiments of the present invention, the first electrode plate 21 is a positive electrode plate, and the second electrode plate 22 is a negative electrode plate. The first polar plate 21 is provided with a liquid injection hole 211, a sealing block 212 is arranged in the liquid injection hole 211, and the outer edge of the sealing block 212 is hermetically connected with the first polar plate 21.
As shown in fig. 1 and 2, in some embodiments of the present invention, the first plate 21 is provided with a flow guide member 4 with two open ends in a direction toward the cavity 11, the flow guide member 4 is disposed at the liquid injection hole 211, the sealing block 212 is embedded in the flow guide member 4 and is hermetically connected with the flow guide member 4, and specifically, the sealing block 212 and the flow guide member 4 are welded. In particular, the flow guide member 4 is tapered to facilitate the injection of the electrolyte.
As shown in fig. 1 and 2, in some embodiments of the present invention, the pole core 3 is a winding core or a lamination, the pole core 3 includes a first tab 31 and a second tab 32, the first tab 31 is electrically connected to the first pole plate 21, and the second tab 32 is electrically connected to the second pole plate 22.
The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. Such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (8)
1. A button cell is characterized by comprising a shell, a top cover component and a pole core, wherein the shell is of a semi-closed structure with one end open; the top cover assembly closes the opening of the shell, so that a cavity for accommodating the pole core is formed between the top cover assembly and the shell, the top cover assembly comprises a first pole plate, a second pole plate and a sealing assembly, and the periphery of the second pole plate is connected with the edge of the opening of the shell; the seal assembly includes an insulating seal disposed between the first and second pole plates and a plurality of connectors; the plurality of connecting pieces penetrate through the first polar plate, the insulating sealing piece and the second polar plate, so that insulating sealing is formed between the first polar plate and the second polar plate; the pole cores are respectively electrically connected with the first pole plate and the second pole plate, and/or the pole cores are respectively electrically connected with the first pole plate and the shell.
2. The button cell according to claim 1, wherein the first plate, the second plate and the insulating seal have coincident center lines, the insulating seal and the second plate are both annular, the inner edge of the insulating seal extends beyond the inner edge of the second plate, and the outer edge of the insulating seal extends beyond the outer edge of the first plate; the first polar plate, the second polar plate and the insulating sealing element are provided with a plurality of through holes at intervals, the through holes penetrate through the first polar plate, the second polar plate and the insulating sealing element, and the connecting pieces penetrate through the through holes in a one-to-one correspondence mode.
3. The button cell according to claim 2, wherein the connecting member comprises a first abutting portion, a second abutting portion and a connecting portion, the connecting portion is in interference connection with the through hole, the outer periphery of the connecting portion presses the insulating sealing member, and one surface of the through hole on the insulating sealing member, which is close to the first polar plate, is deformed by the pressing of the connecting portion and abuts against the first polar plate; one surface, close to the second polar plate, of the through hole in the insulating sealing element is extruded and deformed by the connecting part and is abutted against the second polar plate; the periphery of the through hole is extruded and deformed by the connecting part and is respectively abutted against the surfaces of the first polar plate and the second polar plate; the first abutting portion and the second abutting portion are arranged at two ends of the connecting portion respectively, the first abutting portion abuts against the first pole plate, and the second abutting portion abuts against the second pole plate, so that the first pole plate and the second pole plate extrude the insulating sealing piece to deform.
4. The button cell according to claim 3, wherein the first abutting portion gradually expands in outer diameter in a direction away from the connecting portion to abut against one end of the through hole; the outer diameter of the second abutting portion is gradually enlarged to abut against the other end of the through hole in a direction away from the connecting portion.
5. The button cell according to claim 1, wherein the insulating seal is an insulating gasket.
6. The button cell according to claim 1, wherein the first electrode plate is a positive plate and the second electrode plate is a negative plate; the first polar plate is provided with a liquid injection hole, a sealing block is arranged in the liquid injection hole, and the outer edge of the sealing block is connected with the first polar plate in a sealing mode.
7. The button cell according to claim 6, wherein the first plate is provided with a flow guide member with two open ends facing the cavity, the flow guide member is disposed at the liquid injection hole, and the sealing block is embedded in the flow guide member and is connected with the flow guide member in a sealing manner.
8. The button cell according to claim 6, wherein the core is a roll core or a lamination, and the core comprises a first tab and a second tab, the first tab is electrically connected with the first plate, and the second tab is electrically connected with the second plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946053.4U CN216015453U (en) | 2021-08-18 | 2021-08-18 | Button cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121946053.4U CN216015453U (en) | 2021-08-18 | 2021-08-18 | Button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216015453U true CN216015453U (en) | 2022-03-11 |
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ID=80594242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121946053.4U Active CN216015453U (en) | 2021-08-18 | 2021-08-18 | Button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216015453U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115588808A (en) * | 2022-10-13 | 2023-01-10 | 厦门海辰储能科技股份有限公司 | Battery end cover, battery pack and electric equipment |
| WO2023020231A1 (en) * | 2021-08-20 | 2023-02-23 | 曙鹏科技（深圳）有限公司 | Button cell |
-
2021
- 2021-08-18 CN CN202121946053.4U patent/CN216015453U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023020231A1 (en) * | 2021-08-20 | 2023-02-23 | 曙鹏科技（深圳）有限公司 | Button cell |
| CN115588808A (en) * | 2022-10-13 | 2023-01-10 | 厦门海辰储能科技股份有限公司 | Battery end cover, battery pack and electric equipment |
| CN115588808B (en) * | 2022-10-13 | 2024-01-23 | 厦门海辰储能科技股份有限公司 | Battery end cover, battery pack and electric equipment |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |