CN201820833U - Lithium ion battery electrode plate coating structure - Google Patents
Lithium ion battery electrode plate coating structure Download PDFInfo
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- CN201820833U CN201820833U CN2010205205804U CN201020520580U CN201820833U CN 201820833 U CN201820833 U CN 201820833U CN 2010205205804 U CN2010205205804 U CN 2010205205804U CN 201020520580 U CN201020520580 U CN 201020520580U CN 201820833 U CN201820833 U CN 201820833U
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- lithium
- electrode plate
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- positive plate
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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 provides a lithium ion battery electrode plate coating structure, which comprises an electrode plate. The front of the electrode plate includes a plurality of tab areas at the top and coating areas outside the tab areas; and the back of the electrode plate includes a plurality of tab areas, a staggered area on the upper portion of a positive electrode and a coating area outside the staggered area. As the front and the back of the positive electrode in the lithium ion battery electrode plate coating structure are coated in a mutually staggered manner, the coating areas are staggered longitudinally. When in continuous rolling, stress at the junction among a foil area and the coating areas can be released effectively, so that wrinkling at the junction is eliminated effectively.
Description
Technical field
The utility model relates to battery technology, relates in particular to the electrodes of lithium-ion batteries applying structure.
Background technology
In existing lithium ion battery, difference according to assembling mode can be divided into lamination and reel two kinds of technologies, lamination technology comprises zigzag lamination and pocket type lamination, the used large-scale power lithium-ion battery of electric automobile mainly is exactly the technology that adopts lamination at present, winding process generally uses on middle-size and small-size battery, such as battery of mobile phone, Notebook Battery, bluetooth battery etc.But along with the progress of automation equipment, large-scale power lithium-ion battery also begins progressively to adopt winding process.The lithium-ion-power cell that some of them are had relatively high expectations to power density need adopt the mode and the lug welding of multipole ear, to reduce the internal resistance of cell.Adopting automatically section to cut, under the condition that the auto reeling machine is produced, owing to need multipole ear, the foil that pole piece must keep collector carries out continuous rolling, so that adopt the continuous automatically lug welding ends that cuts of laser machine in the operation of back, to form multipole ear pole piece.
But the positive electrode deformation ratio that positive plate is coated in when carrying out continuous rolling above the aluminium foil is bigger, and aluminium foil is out of shape hardly, under the effect of stress, can cause having the intersection of material district and aluminium foil to occur crumpling, finally cause positive plate part in continuous rolling process, as shown in Figure 1, it is the applying structure schematic diagram of existing based lithium-ion battery positive plate, the back side of its positive plate comprises lug district 12 in the horizontal, material district 14 and dislocation district 16, on pole piece horizontal (length direction), can adopt the mode of gap coating at present, and the pole piece after vertically (Width) upward generally adopts special solvent and craft or equipment to tandem rolling carries out the scraper processing, could guarantee follow-up multipole ear moulding, continuous segment is cut and continuous reeling.No matter but be to adopt manual scraping blade or equipment scraping blade, all exist cost higher, if so the problem that efficient is low and pole piece harvest rate is low is the problem of crumpling when improving the positive electrode current sheet and contain the paper tinsel tandem rolling by other method, just can effectively promote efficient, cost and harvest rate that pole piece is made.
Summary of the invention
The purpose of this utility model is to provide a kind of electrodes of lithium-ion batteries applying structure, by positive plate vertically on form the dislocation district, the stress that paper tinsel district and material district intersection are produced when continuous rolling can effectively discharge.
Technical solutions of the utility model are:
The utility model provides a kind of electrodes of lithium-ion batteries applying structure, comprise electrode slice, it is characterized in that, described electrode slice front comprises some lugs district of being positioned at the top and is positioned at material district outside the lug district, and described electrode slice reverse side comprises some lugs district of being positioned at the top, be positioned at the dislocation district on positive plate top and be positioned at material district outside the dislocation district.
Described electrodes of lithium-ion batteries applying structure, wherein, the positive horizontal two ends of described pole piece are provided with leaves a blank.
Described electrodes of lithium-ion batteries applying structure, wherein, the horizontal end of described pole piece reverse side is provided with leaves a blank, and the other end is provided with the dislocation district in the horizontal.
Described electrodes of lithium-ion batteries applying structure, wherein, the width in described dislocation district is not less than 3 millimeters.
Described electrodes of lithium-ion batteries applying structure, wherein, described electrode slice is a positive plate.
The utility model provides the electrodes of lithium-ion batteries applying structure, in the above-mentioned electrodes of lithium-ion batteries applying structure, dislocation coating by the positive plate positive and negative, make the material district produce dislocation in the vertical, when continuous rolling, the stress of paper tinsel district and material district intersection can effectively discharge, and the problem of crumpling herein can effectively be improved.
Description of drawings
Fig. 1 is the applying structure schematic diagram of existing based lithium-ion battery positive plate;
Fig. 2 is the front schematic view of positive plate in the utility model electrodes of lithium-ion batteries applying structure better embodiment;
Fig. 3 is the reverse side schematic diagram of positive plate in the utility model electrodes of lithium-ion batteries applying structure better embodiment;
Fig. 4 is the end view before positive plate is cut in the utility model electrodes of lithium-ion batteries applying structure better embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
Referring to figs. 2 and 3, in the electrodes of lithium-ion batteries applying structure better embodiment that the utility model provides, the front of based lithium-ion battery positive plate comprises the some lugs district 22 that is positioned at the positive plate top and is positioned at lug district 22 and the material district 24 of two ends outside leaving a blank, the reverse side of described based lithium-ion battery positive plate comprises lug district 22 on the positive plate top, the material district 26 between leaving a blank in the dislocation district 28 on positive plate top and at dislocation district 28 and two ends, and the material district 24 and 26 on the positive and negative two sides of described positive plate all scribbles anode dressing.In better embodiment of the present utility model, an end of described positive plate reverse side also is provided with the dislocation district in the horizontal.
With reference to figure 4, above-mentioned dislocation district 28 is by positive plate positive and negative two sides dislocation is being coated with dressing, the space interval that material district 24 and 26 is interlocked in the vertical and produce after cutting along the lower edge in the positive lining of positive plate district 24, obtains positive plate as shown in Figures 2 and 3.
In better embodiment of the present utility model, the width in positive and negative lining district 24 and the 26 dislocation districts 28 that produce is not less than 3mm in the described positive plate.As an embodiment of the present utility model, the aluminium foil integral width of described positive plate is 210mm, wherein the positive and negative lining of positive plate district 24 and 26 width are 153mm, the positive and negative lining of positive plate district 24 and 26 dislocation district 28 width that produce are 5mm, the upper edge distance of positive 24 upper edges, lining district and aluminium foil is 37mm, and the upper edge distance of 26 upper edges, reverse side material district and aluminium foil is 42mm then.
In the above-mentioned electrodes of lithium-ion batteries applying structure, by the dislocation coating of positive plate positive and negative, make the material district produce dislocation in the vertical, when continuous rolling, the stress of paper tinsel district and material district intersection can effectively discharge, and the problem of crumpling herein can effectively be improved.
Should be understood that; the above only is a better embodiment of the present utility model; not in order to limit protection range of the present utility model; for those of ordinary skills; any modification of being done according to the above description, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. electrodes of lithium-ion batteries applying structure, comprise electrode slice, it is characterized in that, described electrode slice front comprises some lugs district of being positioned at the top and is positioned at material district outside the lug district, and described electrode slice reverse side comprises some lugs district of being positioned at the top, be positioned at the dislocation district on positive plate top and be positioned at material district outside the dislocation district.
2. electrodes of lithium-ion batteries applying structure according to claim 1 is characterized in that, the positive horizontal two ends of described pole piece are provided with leaves a blank.
3. electrodes of lithium-ion batteries applying structure according to claim 1 is characterized in that, the horizontal end of described pole piece reverse side is provided with leaves a blank, and the other end is provided with the dislocation district in the horizontal.
4. according to the described electrodes of lithium-ion batteries applying structure of arbitrary claim in the claim 1 to 3, it is characterized in that the width in described dislocation district is not less than 3 millimeters.
5. according to the described electrodes of lithium-ion batteries applying structure of arbitrary claim in the claim 1 to 3, it is characterized in that described electrode slice is a positive plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205205804U CN201820833U (en) | 2010-08-30 | 2010-08-30 | Lithium ion battery electrode plate coating structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205205804U CN201820833U (en) | 2010-08-30 | 2010-08-30 | Lithium ion battery electrode plate coating structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201820833U true CN201820833U (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205205804U Expired - Fee Related CN201820833U (en) | 2010-08-30 | 2010-08-30 | Lithium ion battery electrode plate coating structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN201820833U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848325A (en) * | 2017-02-15 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Secondary battery pole piece, preparation method thereof and winding type battery cell |
-
2010
- 2010-08-30 CN CN2010205205804U patent/CN201820833U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106848325A (en) * | 2017-02-15 | 2017-06-13 | 宁德时代新能源科技股份有限公司 | Secondary battery pole piece, preparation method thereof and winding type battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110504 Termination date: 20190830 |