CN211265619U - Button cell - Google Patents
Button cell Download PDFInfo
- Publication number
- CN211265619U CN211265619U CN202020140489.3U CN202020140489U CN211265619U CN 211265619 U CN211265619 U CN 211265619U CN 202020140489 U CN202020140489 U CN 202020140489U CN 211265619 U CN211265619 U CN 211265619U
- Authority
- CN
- China
- Prior art keywords
- tab
- shell
- positive
- negative
- button cell
- 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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Links
- 238000003466 welding Methods 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 239000007769 metal material Substances 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 5
- 239000003792 electrolyte Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003475 lamination Methods 0.000 claims description 2
- 241000463219 Epitheca Species 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Images
Classifications
-
- 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
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model relates to a button battery, which comprises a conductive shell, an electric core arranged in the shell, and at least one positive lug and at least one negative lug which are respectively electrically connected with the electric core; the shell includes that one end is equipped with open-ended inferior valve and cooperation and is in the epitheca of opening part, at least one anodal ear with one of at least one negative pole ear presss from both sides and locates the epitheca with between the inferior valve and with the epitheca with inferior valve welding together to can avoid utmost point ear alone with epitheca welded process flow, promote product processing procedure efficiency, and weld firmness increase, the better reliability.
Description
Technical Field
The utility model relates to a battery technology field, more specifically say, relate to a button cell.
Background
Button cells are a small class of cells that are widely used in various areas of life, particularly in small portable electronic devices such as electronic watches, bluetooth headsets, hearing aids, and the like. The existing button battery comprises a metal shell consisting of a metal upper shell and a metal lower shell, a battery cell placed in the metal shell, and a conductor arranged on the metal shell in an insulating manner. The positive electrode and the negative electrode of the battery cell are respectively electrically connected with the metal shell and the conductor. The traditional assembly mode is that the battery core is connected with the positive and negative electrode lugs and then placed into the lower shell, then the positive electrode lug is welded with the shell, the negative electrode lug is welded with the electric conductor, and finally the upper shell and the lower shell are welded together. This kind of assembly method is comparatively loaded down with trivial details, and assembly efficiency is not high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in that, to the above-mentioned defect of prior art, a modified button cell is provided.
The utility model provides a technical scheme that its technical problem adopted is: constructing a button battery, which comprises a conductive shell, a battery cell arranged in the shell, and at least one positive electrode lug and at least one negative electrode lug which are respectively electrically connected with the battery cell;
the shell comprises a lower shell and an upper shell, wherein an opening is formed in one end of the lower shell, the upper shell is matched with the opening, and one of the at least one positive electrode lug and the at least one negative electrode lug is clamped between the upper shell and the lower shell and welded with the upper shell and the lower shell.
In some embodiments, the welding is laser soldering.
In some embodiments, the upper shell and the lower shell are both made of metal materials, the lower shell is in a cylindrical shape with an open top, and the upper shell is in a flat plate shape.
In some embodiments, an annular groove is formed in an outer ring of one end, facing the lower casing, of the upper casing, the annular groove comprises a first face facing the top wall of the lower casing and a second face facing the inner wall of the lower casing, and one of the at least one positive tab and the at least one negative tab and the first face and the second face are welded together in a fitting manner.
In some embodiments, the battery cell is placed in the casing in a spiral winding form or a lamination form, and the battery cell includes at least one positive tab, at least one negative tab, and at least one spacer disposed between the at least one positive tab and the at least one negative tab, wherein the at least one positive tab is electrically connected to the at least one positive tab, and the at least one negative tab is electrically connected to the at least one negative tab.
In some embodiments, one of the at least one positive tab and the at least one negative tab is formed by folding over an end of one of the at least one positive tab and the at least one negative tab.
In some embodiments, the button cell further comprises at least one electrical conductor passing through the housing in an insulated and sealed manner, and the other of the at least one positive tab and the at least one negative tab is electrically connected to the at least one electrical conductor.
In some embodiments, the other of the at least one positive tab and the at least one negative tab is in the shape of a strip, and both ends of the strip are welded to the other of the at least one positive tab and the at least one negative tab and the at least one electrical conductor, respectively.
In some embodiments, the housing is provided with at least one lead-out hole for the at least one electric conductor to pass through, and the button cell further comprises at least one insulating sealing body hermetically plugged between the hole wall of the at least one lead-out hole and the at least one electric conductor.
In some embodiments, the casing is provided with a liquid injection hole for injecting electrolyte into the casing.
Implement the utility model discloses following beneficial effect has at least: one of the at least one positive tab and the at least one negative tab is clamped between the upper shell and the lower shell and is welded with the upper shell and the lower shell, so that the process flow of the tab which is separately welded with the upper shell can be avoided, the product processing efficiency is improved, the welding firmness is increased, and the reliability is better.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic cross-sectional view of a button cell according to some embodiments of the present invention;
fig. 2 is a schematic plan view of the positive electrode sheet according to some embodiments of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1-2 illustrate a button cell in some embodiments of the present invention, which may be a solid-state battery, a semi-solid-state battery, or a liquid-state battery, and may include a sealed conductive housing 1, a cell 2 disposed in the housing 1, an electrical conductor 3 passing through the housing 1 in an insulating and sealing manner, a positive tab 201 electrically connected to a positive electrode of the cell 2, and a negative tab 202 electrically connected to a negative electrode of the cell 2. The shell 1 and the conductor 3 are respectively electrically connected with the positive tab 201 and the negative tab 202, and are respectively used as positive and negative leading-out electrodes of the button cell and used for external connection of electronic components such as a circuit board or a load. It is understood that, in other embodiments, the housing 1 and the conductor 3 may be electrically connected to the negative tab 202 and the positive tab 201, respectively; the number of the conductor 3, the negative electrode tab 202, and the positive electrode tab 201 is not limited to one, and two or more may be applied.
The core 2 may be placed in the casing 1 in the form of a spiral winding in some embodiments, and a central axis of the core may coincide with a central axis of the casing 1. The battery cell 2 may include at least one positive electrode tab 21, at least one negative electrode tab 22, and at least one spacer 23 disposed between the at least one positive electrode tab 21 and the at least one negative electrode tab 22. In general, the positive electrode sheet 21 may be formed by coating a positive electrode current collector (e.g., aluminum foil) with a semiconductor material (e.g., lithium cobaltate) plus a conductive agent (e.g., acetylene black) and a binder (e.g., PVDF), and the negative electrode sheet 22 may be formed by coating a negative electrode current collector (e.g., copper foil) with a conductive material (e.g., graphite) plus a conductive agent (e.g., acetylene black), a thickener (e.g., CMC), and a binder (e.g., SBR). The positive tab 201 is electrically connected with the at least one positive plate 21, and can be formed by folding the end of the at least one positive plate 21 away from the winding core, so that the space of inactive substances can be reduced, the process flow of welding the positive tab 201 and the positive plate 21 can be avoided, and the efficiency of the product manufacturing process can be improved. The negative electrode tab 202 is electrically connected to the at least one negative electrode tab 22, and typically, the negative electrode tab 202 may be a metal conductive tape such as a copper tape or an aluminum tape, and may be integrally bonded to the at least one negative electrode tab 22 by welding. It is understood that in other embodiments, the positive tab 201 and the positive tab 21 may be separately manufactured and connected together, and the negative tab 202 may also be formed by folding the end of the at least one negative tab 22 away from the winding core. In other embodiments, the battery cell 2 may also be placed in the housing 1 in a laminated manner.
The housing 1 may be made of a metal material, such as stainless steel, aluminum, iron, or other metal material that can be welded by laser. The housing 1 may in some embodiments be substantially in the form of an oblate cylinder having a diameter dimension greater than its height dimension. In some embodiments, the height of the housing 1 may be 0.1-0.9 times, such as 0.25-0.7 times, its diameter. The thickness of the housing 1 may be 0.1-1mm, for example 0.13-0.35 mm.
The housing 1 may include a cylindrical lower case 12 having an opening at the top thereof and a circular flat upper case 11 fitted thereto, and the periphery of the upper case 11 is sealingly combined with the opening edge of the lower case 12. The upper shell 11 may also be provided with a liquid injection hole 112 for injecting electrolyte into the outer shell 1. The button cell may further include a sealing member (not shown) for sealing the injection hole 112 after the injection is completed.
The upper shell 11 is provided with a lead-out hole 110 for the electric conductor 3 to pass through, and an insulating sealing body 4 is hermetically plugged between the hole wall of the lead-out hole 110 and the electric conductor 3, wherein the electric conductor 3 and the upper shell 11 are insulated by the insulating sealing body 4. The insulating seal body 4 may be made of an insulating material such as an insulating paste, a ceramic coating film, or a glass coating film. In the present embodiment, the insulating sealing body 4 has a substantially i-shaped cross section, and the cross sectional dimensions of the end portions at both ends thereof are larger than the cross sectional dimension of the intermediate connecting portion. The middle connecting part of the insulating sealing body 4 is longitudinally arranged in the lead-out hole 110 in a penetrating way, and the end parts of the two ends of the insulating sealing body respectively abut against the upper side and the lower side of the upper shell 11, so that the insulating sealing body 4 is fixedly clamped in the lead-out hole 110 and is prevented from falling off.
The electric conductor 3 is longitudinally inserted into the insulating sealing body 4, and both ends thereof are exposed from both ends of the insulating sealing body 4, respectively. The conductor 3 may be rigid in some embodiments and may be made of a conductive metal material such as stainless steel, aluminum, iron, copper, etc. to enhance the pressure resistance, and may be in the shape of a strip, a T, or a drum. In the present embodiment, the conductor 3 has a T-shape, and includes a head 31 with a larger size and a shaft 32 connected to the head 31. The rod part 32 is longitudinally arranged in the insulating sealing body 4 in a penetrating way, and the head part 31 is positioned outside the shell 1 and is convenient for externally connecting a lead. It is understood that in other embodiments, the conductive body 3 may also be flexible, so that when an electronic component such as an external circuit board or a load is required, the conductive body 3 can be directly connected to the electronic component without additional soldering leads.
When the button cell is manufactured, the following steps can be adopted:
(1) providing a lower shell 12 and an upper shell 11;
(2) a lead-out hole 110 and an injection hole 112 are respectively formed on the upper shell 11;
(3) providing an insulating sealing body 4, and plugging the insulating sealing body 4 into the lead-out hole 110;
(4) providing an electric conductor 3, and penetrating the electric conductor 3 into an insulating sealing body 4;
(5) placing the battery core 2 in the lower shell 12, and welding the negative plate 22 to the electric conductor 3 through the negative tab 202;
(6) one end of the positive plate 21, which is far away from the winding core, is directly used as a positive lug 201 and is placed on the edge of the opening of the lower shell 12, the upper shell 11 is buckled and matched, and the upper shell 11, the lower shell 12 and the positive lug 201 are welded together in a laser soldering mode.
(7) Injecting electrolyte into the casing 1 through the injection hole 112;
(8) the liquid injection hole 112 is sealed by a sealing piece.
It is to be understood that the above-described respective technical features may be used in any combination without limitation.
The above examples only represent the preferred embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. A button battery is characterized by comprising a conductive shell (1), a battery cell (2) arranged in the shell (1), and at least one positive tab (201) and at least one negative tab (202) which are respectively electrically connected with the battery cell (2);
the shell (1) comprises a lower shell (12) and an upper shell (11), wherein an opening is formed in one end of the lower shell (12), the upper shell (11) is matched with the opening, and one of the at least one positive electrode lug (201) and the at least one negative electrode lug (202) is clamped between the upper shell (11) and the lower shell (12) and welded with the upper shell (11) and the lower shell (12).
2. The button cell as defined in claim 1, wherein the welding is laser soldering.
3. The button cell according to claim 1, wherein the upper case (11) and the lower case (12) are made of metal material, the lower case (12) is in a cylindrical shape with an open top, and the upper case (11) is in a flat plate shape.
4. The button cell according to claim 3, wherein an annular groove (111) is formed in an outer ring of one end of the upper shell (11) facing the lower shell (12), the annular groove (111) comprises a first face (A) facing a top wall of the lower shell (12) and a second face (B) facing an inner wall of the lower shell (12), and one of the at least one positive tab (201) and the at least one negative tab (202) and the first face (A) and the second face (B) are welded together in a fitting manner.
5. Button cell according to any of claims 1 to 4, characterized in that the cell (2) is placed in the housing (1) in the form of a spiral winding or a lamination, the cell (2) comprises at least one positive tab (21), at least one negative tab (22) and at least one separator (23) arranged between the at least one positive tab (21) and the at least one negative tab (22), the at least one positive tab (201) is electrically connected with the at least one positive tab (21), and the at least one negative tab (202) is electrically connected with the at least one negative tab (22).
6. The button cell according to claim 5, wherein one of the at least one positive tab (201) and the at least one negative tab (202) is formed by folding over one end of one of the at least one positive tab (21) and the at least one negative tab (22).
7. The button cell according to claim 5, further comprising at least one electrical conductor (3) passing through the housing (1) in an insulated and sealed manner, wherein the other of the at least one positive tab (201) and the at least one negative tab (202) is electrically connected to the at least one electrical conductor (3).
8. The button cell according to claim 7, wherein the other of the at least one positive tab (201) and the at least one negative tab (202) is in a band shape, and both ends of the other of the at least one positive tab (21) and the at least one negative tab (22) are welded to the at least one conductor (3).
9. The button cell according to claim 7, characterized in that at least one lead-out hole (110) for the at least one electrical conductor (3) to pass through is arranged in the housing (1) in a penetrating manner, and the button cell further comprises at least one insulating sealing body (4) which is hermetically sealed between the hole wall of the at least one lead-out hole (110) and the at least one electrical conductor (3).
10. The button cell according to any one of claims 1 to 4, wherein the casing (1) is provided with a liquid injection hole (112) for injecting an electrolyte into the casing (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140489.3U CN211265619U (en) | 2020-01-21 | 2020-01-21 | Button cell |
| PCT/CN2020/126562 WO2021088886A1 (en) | 2019-11-04 | 2020-11-04 | Button battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140489.3U CN211265619U (en) | 2020-01-21 | 2020-01-21 | Button cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211265619U true CN211265619U (en) | 2020-08-14 |
Family
ID=71961700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020140489.3U Active CN211265619U (en) | 2019-11-04 | 2020-01-21 | Button cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211265619U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234282A (en) * | 2020-10-10 | 2021-01-15 | 深圳市合壹新能技术有限公司 | Battery shell assembly, battery and preparation method |
| EP4024574A1 (en) * | 2020-12-29 | 2022-07-06 | Zhuhai Zhi Li Battery Co., Ltd. | Top plate for laser welded lithium-ion button cell battery |
-
2020
- 2020-01-21 CN CN202020140489.3U patent/CN211265619U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234282A (en) * | 2020-10-10 | 2021-01-15 | 深圳市合壹新能技术有限公司 | Battery shell assembly, battery and preparation method |
| EP4024574A1 (en) * | 2020-12-29 | 2022-07-06 | Zhuhai Zhi Li Battery Co., Ltd. | Top plate for laser welded lithium-ion button cell battery |
| EP4235947A3 (en) * | 2020-12-29 | 2023-11-15 | Zhuhai Zhi Li Battery Co., Ltd. | Laser welded lithium-ion button cell battery comprising a top plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 519170 The first, second, and third floors of Building 1, No. 3215 Zhufeng Avenue South, Qianwu Town, Doumen District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Juneng New Energy Co.,Ltd. Address before: No. 303, 3rd floor, No. 9, Keji 8th Road, Tangjiawan Town, high tech Zone, Zhuhai City, Guangdong Province, 519000 Patentee before: ZHUHAI MICROMATRIX INDUSTRY Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Button cell Granted publication date: 20200814 Pledgee: Hengqin Guangdong Macao Deep Cooperation Zone Branch of Guangdong Shunde Rural Commercial Bank Co.,Ltd. Pledgor: Zhuhai Juneng New Energy Co.,Ltd. Registration number: Y2024980001133 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |