CN112864542A - Pole structure and lithium ion battery - Google Patents
Pole structure and lithium ion battery Download PDFInfo
- Publication number
- CN112864542A CN112864542A CN201911183394.8A CN201911183394A CN112864542A CN 112864542 A CN112864542 A CN 112864542A CN 201911183394 A CN201911183394 A CN 201911183394A CN 112864542 A CN112864542 A CN 112864542A
- Authority
- CN
- China
- Prior art keywords
- pole
- cover plate
- rivet
- insulating sheet
- post
- 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
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 14
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 7
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000587161 Gomphocarpus Species 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a pole structure and a lithium ion battery, wherein the pole structure comprises a cover plate (1) and two pressing blocks (3); two briquetting (3) are installed through rivet (2) respectively the both ends of apron (1) are in order to form anodal utmost point post and negative pole utmost point post, wherein, briquetting (3) are stainless steel. The pole structure of the invention has lighter weight, thereby increasing the mass energy density of the battery, and being easy to process, thereby greatly reducing the manufacturing cost of the battery.
Description
Technical Field
The invention relates to the technical field of lithium ion batteries, in particular to a pole structure and a lithium ion battery.
Background
Lithium ion batteries have been widely used due to their advantages of high energy density, long cycle life, high operating voltage, no memory effect, environmental friendliness, etc. In the prior art, a pole structure is used as a necessary component for connecting the inside and the outside of a battery, one end of the pole structure is connected with an external circuit of the battery, and the other end of the pole structure is connected with an internal electric core of the battery, so that the battery can perform a complete charging and discharging process. The briquetting that present utmost point post structure adopted nickel or copper material mostly is as utmost point post for utmost point post has heavier quality, and this will lead to reducing the quality energy density of battery, and, present utmost point post structure is mostly comparatively complicated, is unfavorable for the preparation of battery.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a pole structure and a lithium ion battery.
In order to achieve the above object, the present invention provides a pole structure, which includes a cover plate and two press blocks; two the briquetting is respectively through the rivet installation in the both ends of apron are in order to form anodal utmost point post and negative pole utmost point post, wherein, the briquetting is stainless steel.
Optionally, the rivet at the positive electrode pole is made of aluminum, and the rivet at the negative electrode pole is made of red copper nickel plating.
Optionally, the pole structure includes a first insulating sheet, and the first insulating sheet is disposed between the cover plate and the pressing block.
Optionally, the first insulating sheet is provided with a first through hole, and the rivet penetrates through the first through hole to install the first insulating sheet between the cover plate and the pressing block.
Optionally, the pole structure includes a connecting sheet for connecting with a tab of the battery cell, and the connecting sheet is connected with the pressing block through the rivet; the connecting piece is mounted on the cover plate so that the cover plate is located between the connecting piece and the pressing block.
Optionally, the pole structure includes a second insulating sheet, and the second insulating sheet is disposed between the connecting sheet and the cover plate.
Optionally, a second through hole is formed in the second insulating sheet, and the rivet penetrates through the second through hole to install the second insulating sheet between the connecting sheet and the cover plate.
Optionally, the two compacts are identical in shape.
The invention provides a lithium ion battery, which comprises a battery cell and the pole column structure, wherein two press blocks of the pole column structure are respectively connected with two pole lugs of the battery cell.
Optionally, the lithium ion battery includes a support, and the support is disposed between the battery cell and the post structure to provide support for the post structure.
Through the technical scheme, the two stainless steel pressing blocks are respectively arranged at the two ends of the cover plate through the rivets to form the anode pole and the cathode pole, so that the pole structure is easy to process and has light weight, and the mass energy density of the battery can be increased.
Drawings
FIG. 1 is a top view of one embodiment of a pole structure of the present invention;
FIG. 2 is a front view of one embodiment of a pole structure of the present invention;
fig. 3 is a schematic view of a compact of the pole structure of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 3, the pole structure of the present invention includes a cover plate 1 and two press blocks 3; two briquetting 3 are installed in the both ends of apron 1 through rivet 2 respectively in order to form anodal utmost point post and negative pole utmost point post, and wherein, briquetting 3 is stainless steel.
According to the invention, two stainless steel pressing blocks 3 are respectively arranged at two ends of the cover plate 1 through the rivets 2, and the pressing blocks 3 are made of stainless steel and have very thin thickness, so that the pole has very light weight, and the mass energy density of the battery is correspondingly increased.
In order to effectively prolong the service life of the battery, the rivet 2 at the anode pole is made of aluminum, and the rivet 2 at the cathode pole is made of red copper nickel plating. Because the positive electric potential of battery is high, the rivet of aluminium material has the advantage that the aluminium foil oxide layer is fine and close, can prevent the mass flow body oxidation, and the electric potential of battery negative pole is low, and red copper nickel plating material oxide layer is more loose, is easily oxidized, consequently is applicable to the negative pole that the electric potential is lower.
In order to prevent the short circuit phenomenon caused by the direct contact between the cover plate 1 and the press block 3, optionally, the pole structure includes a first insulating sheet 4, and the first insulating sheet 4 is disposed between the cover plate 1 and the press block 3.
It should be understood that the first insulating sheet 4 may be installed between the pressing block 3 and the cover plate 1 in various ways, and in one embodiment of the present invention, optionally, the first insulating sheet 4 is provided with a first through hole through which the rivet 2 passes to install the first insulating sheet 4 between the cover plate 1 and the pressing block 3. In the above embodiment, the first insulating sheet 4 also contributes to further improving the firmness of the pole structure during the riveting process of the compact 3 and the cover plate 1.
In order to enable the positive electrode pole and the negative electrode pole to be conveniently connected with the pole lugs of the battery cell, optionally, the pole structure comprises a connecting sheet 5 for connecting with the pole lugs of the battery cell, and the connecting sheet 5 is connected with the pressing block 3 through a rivet 2; the connecting piece 5 is mounted on the cover plate 1 such that the cover plate 1 is located between the connecting piece 5 and the pressing piece 3.
In order to prevent the connecting sheet 5 from directly contacting the cover plate 1 to cause a short circuit, optionally, the pole structure includes a second insulating sheet 6, and the second insulating sheet 6 is disposed between the connecting sheet 5 and the cover plate 1.
It should be understood that the second insulation sheet 6 can be installed between the connection sheet 5 and the cap plate 1 in various ways, and in an embodiment of the present invention, optionally, the second insulation sheet 6 is provided with a second through hole, and the rivet 2 penetrates through the second through hole to install the second insulation sheet 6 between the connection sheet 5 and the cap plate 1. In the above embodiment, the second insulating sheet 6 also contributes to further improving the firmness of the pole structure during the riveting of the connecting sheet 5 and the cover plate 1.
In order to facilitate manufacturing and reduce production and processing costs, optionally, the two press blocks 3 have the same shape.
When the pole structure is used for a battery module, the pressing block 3 is fixed by the rivet 2, and when the riveting firmness of the pressing block 3 is increased, the nail head of the rivet 2 can greatly shield the pressing block 3, so that the problem that the welding area of the pressing block 3 is sharply reduced is caused, and the subsequent connection and assembly of the battery module are influenced. To solve this problem, as shown in fig. 3, the pressing piece 3 may alternatively have a circular portion 31 and a rectangular portion 32, the circular portion 31 having a shape corresponding to the head of the rivet 2, and the rectangular portion 32 being connected to the circular portion 31 and extending toward the center of the cover plate 1 along the length direction of the cover plate 1. Because the rectangle portion 32 of briquetting 3 has stretched out the range of sheltering from of the pin fin of rivet 2, promptly, rectangle portion 32 can not sheltered from by the pin fin, consequently, the briquetting 3 of above-mentioned form can guarantee to have sufficient area of welding when fully guaranteeing the riveting fastness to can satisfy subsequent battery module's connection equipment requirement.
The invention also provides a lithium ion battery, which comprises a battery cell and the pole column structure, wherein the two pressing blocks 3 of the pole column structure are respectively connected with the two pole lugs of the battery cell.
In order to reduce the influence of the vibration of the battery during operation on the battery cell, optionally, the lithium ion battery includes a support, and the support is disposed between the battery cell and the pole structure to provide support for the pole structure. Through leg joint electric core and utmost point post structure, can prevent that battery electric core from taking place the displacement thereupon when the vibration to improve the stability of battery operation.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The pole structure is characterized by comprising a cover plate (1) and two pressing blocks (3); two briquetting (3) are installed through rivet (2) respectively the both ends of apron (1) are in order to form anodal utmost point post and negative pole utmost point post, wherein, briquetting (3) are stainless steel.
2. The post structure according to claim 1, characterized in that the rivet (2) at the positive post is made of aluminum and the rivet (2) at the negative post is made of red copper nickel plating.
3. The pole arrangement according to claim 1, characterized in that it comprises a first insulating sheet (4), said first insulating sheet (4) being arranged between the cover plate (1) and the press block (3).
4. The pole structure according to claim 3, characterized in that the first insulating sheet (4) is provided with a first through hole, and the rivet (2) penetrates through the first through hole to install the first insulating sheet (4) between the cover plate (1) and the pressing block (3).
5. The pole structure of claim 1, characterized in that it comprises a connecting piece (5) for connection with a pole lug of a cell, said connecting piece (5) being connected with said press block (3) by means of said rivet (2); the connecting piece (5) is arranged on the cover plate (1) so that the cover plate (1) is positioned between the connecting piece (5) and the pressing block (3).
6. A pole construction according to claim 5, characterised in that it comprises a second insulating sheet (6), the second insulating sheet (6) being arranged between the connection sheet (5) and the cover plate (1).
7. The pole post structure of claim 6, wherein the second insulating sheet (6) is provided with a second through hole, and the rivet (2) penetrates through the second through hole to install the second insulating sheet (6) between the connecting sheet (5) and the cover plate (1).
8. The pole construction according to claim 1, characterized in that the two compacts (3) are identical in shape.
9. A lithium ion battery, characterized in that, the lithium ion battery comprises a battery core and the pole structure of any one of claims 1 to 8, and two of the pressing blocks (3) of the pole structure are respectively connected with two tabs of the battery core.
10. The lithium ion battery of claim 9, comprising a bracket disposed between the cell and the post structure to provide support to the post structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183394.8A CN112864542A (en) | 2019-11-27 | 2019-11-27 | Pole structure and lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183394.8A CN112864542A (en) | 2019-11-27 | 2019-11-27 | Pole structure and lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112864542A true CN112864542A (en) | 2021-05-28 |
Family
ID=75985763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911183394.8A Pending CN112864542A (en) | 2019-11-27 | 2019-11-27 | Pole structure and lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112864542A (en) |
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| WO2018139452A1 (en) * | 2017-01-25 | 2018-08-02 | 三洋電機株式会社 | Secondary cell |
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| CN207938666U (en) * | 2018-03-12 | 2018-10-02 | 力信（江苏）能源科技有限责任公司 | A kind of structure of battery corer |
| KR20190101589A (en) * | 2018-02-23 | 2019-09-02 | 박찬우 | Cap assembly for secondary battery |
| CN209401713U (en) * | 2019-02-13 | 2019-09-17 | 成都鑫三洋科技有限公司 | A kind of battery cover |
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| CN201017923Y (en) * | 2007-02-09 | 2008-02-06 | 深圳市比克电池有限公司 | Battery cover board and battery |
| CN201194237Y (en) * | 2008-04-26 | 2009-02-11 | 比亚迪股份有限公司 | Battery cover and lithium ionic cell comprising the cover |
| CN105304835A (en) * | 2010-07-21 | 2016-02-03 | 株式会社东芝 | Battery and battery assembly |
| CN201749893U (en) * | 2010-09-07 | 2011-02-16 | 江苏万力电池股份有限公司 | Pole of lithium ion power battery used for electromobile |
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| CN103078069A (en) * | 2012-12-29 | 2013-05-01 | 惠州亿纬锂能股份有限公司 | Sealing element for lithium ion battery capacitor |
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| CN206059541U (en) * | 2016-08-31 | 2017-03-29 | 山东威能环保电源科技股份有限公司 | A kind of lithium ion battery cover board component of anti-overcharge excessively stream |
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| KR20190101589A (en) * | 2018-02-23 | 2019-09-02 | 박찬우 | Cap assembly for secondary battery |
| CN207938666U (en) * | 2018-03-12 | 2018-10-02 | 力信（江苏）能源科技有限责任公司 | A kind of structure of battery corer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Applicant after: Jiangsu haisida power supply Co.,Ltd. Address before: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Applicant before: JIANGSU HIGHSTAR BATTERY MANUFACTURING Co.,Ltd. |
|
| CB02 | Change of applicant information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |
|
| RJ01 | Rejection of invention patent application after publication |