CN211238370U - Positive pole of high multiplying power lithium ion battery - Google Patents
Positive pole of high multiplying power lithium ion battery Download PDFInfo
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- CN211238370U CN211238370U CN201922368737.XU CN201922368737U CN211238370U CN 211238370 U CN211238370 U CN 211238370U CN 201922368737 U CN201922368737 U CN 201922368737U CN 211238370 U CN211238370 U CN 211238370U
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- Prior art keywords
- lithium ion
- ion battery
- positive pole
- connecting sheet
- positive electrode
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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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Abstract
The utility model discloses a positive pole of a high-rate lithium ion battery, the current on the positive pole is uniformly guided to a disk, and the whole guide area of a connecting sheet is larger, so that the discharge demand of the high-rate lithium ion battery can be met; the connecting piece and the positive electrode are welded in advance to reduce the welding difficulty in the later period.
Description
Technical Field
The utility model relates to a high magnification lithium ion battery's positive pole.
Background
The highest capacity of a high-rate lithium ion battery 18650 produced in China at present, which can continuously discharge 20A current, is 2000 mAh.
A diversion aluminum belt is welded on the anode of a common 18650 lithium ion battery to serve as an anode tab to be connected to an anode end cap so as to form an anode discharging terminal. During discharging, the current is unevenly distributed on the positive plate, and the current conducting area and the physical internal resistance of the positive plate are small, so that the discharging requirement of the high-rate lithium ion battery is difficult to meet. And the problem that the aluminum strip is difficult to bend in the battery cell due to the fact that the flow guide aluminum strip is directly added on the positive plate, and the aluminum strip is difficult to weld with the positive end cap is caused, so that the process of the positive multi-tab battery cell cannot be realized in a 18650 lithium ion battery with a narrow space.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a high magnification lithium ion battery's positive pole for current distribution is even and increase its conduction area.
The technical scheme is as follows: the utility model discloses a positive pole of a high-rate lithium ion battery, which comprises a body; the body is provided with a plurality of connecting sheets, the body is wound into a cylindrical shape or a square cylindrical shape, and after the body is wound, the body is provided with a disc with a leading-out belt between the connecting sheets; the connecting sheet is bent and fixed with the disk sheet in a welding mode.
Through adopting above-mentioned technical scheme, fix a plurality of connection pieces on positive pole body in advance, the connection piece is buckled and is then with disk fixed connection, and the connection piece that the dispersion set up on positive pole body can be with the even water conservancy diversion of electric current on the positive pole to the disk on, and the holistic water conservancy diversion area of connection piece is bigger moreover, can satisfy high multiplying power lithium ion battery's the demand of discharging.
Further, the body, the connecting piece and the disk are all made of aluminum materials, and the thickness of the connecting piece is larger than that of the body.
Furthermore, the body can be pre-extruded at the connection part of the connecting sheet to form a groove, the shape of the groove is consistent with the width of the connecting sheet, and the connecting sheet is placed in the groove and welded.
Has the advantages that: compared with the prior art, the utility model has the advantages that the current on the anode is uniformly guided to the disc, and the whole guide area of the connecting sheet is larger, thus meeting the discharge requirement of the high-rate lithium ion battery; the connecting piece and the positive electrode are welded in advance to reduce the welding difficulty in the later period.
Drawings
Fig. 1 is a development view of a positive electrode of a high-rate lithium ion battery.
Detailed Description
As shown in fig. 1, the preparation of the positive electrode of a high-rate lithium ion battery comprises the steps of
Step 1, cutting an aluminum plate to form a plurality of anode bodies 1; and putting the cut positive electrode body 1 into a cleaning pool for soaking and cleaning so as to clean oil stains on the surface of the positive electrode body 1.
And 3, winding the anode body 1 into a cylindrical shape or a square cylindrical shape, placing a disc with a leading-out belt on the anode body 1, bending the connecting sheet 2 and attaching the connecting sheet to the disc, and welding the connecting sheet 2 and the disc by a welding machine to realize fixation.
Therefore, the positive electrode of the high-rate lithium ion battery comprises a body 1; the body 1 is provided with a plurality of connecting pieces 2, the body 1 is wound into a cylindrical shape or a square cylindrical shape, and after the body 1 is wound, the body 1 is provided with a disc with a leading-out belt between the connecting pieces 2; the connecting piece 2 is bent and then fixed with the disk by welding.
The aluminum material has good conductivity, so the body 1, the connecting sheet 2 and the disk are all made of the aluminum material, the thickness of the connecting sheet 2 is larger than that of the body 1, and the thickness of the connecting sheet 2 is larger than that of the body 1, so that the connecting sheet 2 can obtain good bending property, and the connecting sheet 2 is prevented from being bent and broken when being bent.
In order to determine the connection position between the connecting piece 2 and the body 1, the body 1 can be pre-extruded with a groove at the connection position of the connecting piece 2, the shape of the groove is consistent with the width of the connecting piece 2, and the connecting piece 2 is placed in the groove and welded. And the both sides of connecting piece 2 also partly and anodal body 1 contact, the area of contact between connecting piece 2 and the body 1 compares body 1 not notched area of contact bigger like this, and the water conservancy diversion effect of connecting piece 2 is better like this.
Claims (3)
1. The positive electrode of the high-rate lithium ion battery comprises a body; the body is wound into a cylindrical shape or a square cylindrical shape, and a disc with a leading-out belt is arranged between the connecting sheets of the body; the connecting sheet is fixed with the disk sheet in a welding mode.
2. The positive electrode of the high-rate lithium ion battery according to claim 1, wherein the body, the connecting sheet and the disk are made of aluminum material, and the thickness of the connecting sheet is greater than that of the body.
3. The positive electrode of the high-rate lithium ion battery according to claim 1, wherein the body is pre-extruded with a groove at the joint of the connecting sheet, the shape of the groove is consistent with the width of the connecting sheet, and the connecting sheet is placed in the groove and welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922368737.XU CN211238370U (en) | 2019-12-25 | 2019-12-25 | Positive pole of high multiplying power lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922368737.XU CN211238370U (en) | 2019-12-25 | 2019-12-25 | Positive pole of high multiplying power lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211238370U true CN211238370U (en) | 2020-08-11 |
Family
ID=71925666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922368737.XU Active CN211238370U (en) | 2019-12-25 | 2019-12-25 | Positive pole of high multiplying power lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211238370U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312977A (en) * | 2019-12-25 | 2020-06-19 | 无锡市明杨新能源有限公司 | Positive electrode of high-rate lithium ion battery and preparation method thereof |
-
2019
- 2019-12-25 CN CN201922368737.XU patent/CN211238370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111312977A (en) * | 2019-12-25 | 2020-06-19 | 无锡市明杨新能源有限公司 | Positive electrode of high-rate lithium ion battery and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214000 e Hu Zhen Gan Lu Cai Wan Cun, Xishan District, Wuxi City, Jiangsu Province Patentee after: Wuxi Mingyang New Energy Co.,Ltd. Address before: 214000 e Hu Zhen Gan Lu Cai Wan Cun, Xishan District, Wuxi City, Jiangsu Province Patentee before: Wuxi Mingyang New Energy Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |