CN202758972U - Positive electrode piece structure of lithium-ion battery - Google Patents
Positive electrode piece structure of lithium-ion battery Download PDFInfo
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- CN202758972U CN202758972U CN2012204182378U CN201220418237U CN202758972U CN 202758972 U CN202758972 U CN 202758972U CN 2012204182378 U CN2012204182378 U CN 2012204182378U CN 201220418237 U CN201220418237 U CN 201220418237U CN 202758972 U CN202758972 U CN 202758972U
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- electrode piece
- gummed paper
- ion battery
- lithium
- area
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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 electrode piece structure of a lithium-ion battery. The positive electrode piece structure comprises an electrode piece, and a blank area is arranged on the electrode piece. The positive electrode piece structure is characterized in that an electrode ear is welded on the blank area on the electrode piece, metal burrs are formed at the welding position of the electrode piece after welding, a piece of gummed paper is adhered to the electrode piece to prevent the burrs from piercing a separating membrane of the lithium-ion battery, the back of the blank area corresponding to the electrode ear is also provided with a piece of gummed paper, the gummed paper is made of non-woven fabric cloth materials, and the surface of the adhesive paper is provided with micrometer holes which are distributed on the whole gummed paper, and the area of the gummed paper is larger than the area of the blank area. The positive electrode piece structure can play a role of adhesion, can prevent the burrs from piercing a separation membrane of the lithium-ion battery, is capable of absorbing electrolytes at the same time, and enables lithium-ions in the material dressing area covered by the gummed paper in the area where the electrode ear is welded on the electrode piece to be embedded or come off.
Description
Technical field
The utility model relates to a kind of battery cathode structure, is specifically related to a kind of anode slice of lithium ion battery structure.
Background technology
The fail safe of lithium ion battery is extremely important; inside lithium ion cell just; negative pole structure is directly connected to the security performance of battery; need the zone of positive plate soldering polar ear is protected in the present lithium ion battery production process; to avoid puncturing barrier film and pole piece broken belt owing to the technology burr of weld zone; the destructive consequence that battery produces short circuit occurs; what existing protection gummed paper to anodal weld zone adopted all is common airtight gummed paper; though this gummed paper can play the protection to positive plate soldering polar ear zone; but can not reach absorption electrolyte; the general adhesive tape that uses simultaneously can't make the free embedding of the lithium ion that covers the dressing district take off, on the waste in battery dressing district with affect the consistency of battery design.While can not take off the free embedding of this regional lithium ion, thereby affects the performance of battery.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of can play the effect of pasting; can protect again burr can not puncture lithium ion battery separator; simultaneously can adsorb electrolyte, but also embedding a kind of anode slice of lithium ion battery structure of taking off of the lithium ion that makes the dressing district that pole piece soldering polar ear zone covered by adhesive tape.
A kind of lithium ion cell positive structure, comprising that pole piece, described pole piece are provided with stays the white area, it is characterized in that: the white area of staying on the described pole piece is welded with lug, after welding, the weld of pole piece has metallic bur power, in order to make burr can not puncture lithium ion battery separator, paste a gummed paper above the described lug, the stay white area back side corresponding with lug also is provided with a gummed paper.
Described gummed paper adopts nonwoven cloth material to make, and its surface is provided with several microns hole, and described micron hole is covered with whole gummed paper.
The area of described gummed paper is greater than the tab welding region area.
The beneficial effects of the utility model are: 1, can play the effect of pasting, can protect again burr can not puncture lithium ion battery separator; 2, adopt nonwoven cloth material to be made by gummed paper, thereby can effectively adsorb electrolyte; 3, the micron hole by the gummed paper surface can make the free embedding of lithium ion in pole piece soldering polar ear zone take off.
Description of drawings
Fig. 1 is that the utility model stays white area structure schematic diagram;
Fig. 2 is that the utility model stays white area Facad structure schematic diagram;
Fig. 3 is the utility model pole piece side structure schematic diagram;
Fig. 4 is the utility model gummed paper part structure for amplifying schematic diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Shown in Fig. 1-4: a kind of anode slice of lithium ion battery structure, comprising that pole piece 1, pole piece 1 are provided with stays white area 2, the white area 2 of staying on the pole piece 1 is welded with lug 3, after welding, the weld of pole piece has metallic bur power, in order to make burr can not puncture lithium ion battery separator 5, paste a gummed paper 4 above the lug 3, stay white area 2 back sides corresponding with lug 3 also are provided with a gummed paper 41.
Gummed paper 4 adopts nonwoven cloth material to make, and its surface is provided with micron hole 6, and micron hole 6 is covered with whole gummed paper 4.
Gummed paper 4,41 area are greater than the welding region area.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. anode slice of lithium ion battery structure, comprising that pole piece, described pole piece are provided with stays the white area, it is characterized in that: the white area of staying on the described pole piece is welded with lug, pastes a gummed paper above the described lug, and the stay white area back side corresponding with lug also is provided with a gummed paper.
2. described a kind of anode slice of lithium ion battery structure according to claim 1, it is characterized in that: described gummed paper adopts nonwoven cloth material to make, and its surface is provided with a micron hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204182378U CN202758972U (en) | 2012-08-22 | 2012-08-22 | Positive electrode piece structure of lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012204182378U CN202758972U (en) | 2012-08-22 | 2012-08-22 | Positive electrode piece structure of lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758972U true CN202758972U (en) | 2013-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204182378U Expired - Fee Related CN202758972U (en) | 2012-08-22 | 2012-08-22 | Positive electrode piece structure of lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758972U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299241A (en) * | 2016-08-22 | 2017-01-04 | 中航锂电（洛阳）有限公司 | A kind of pole piece, the manufacture method of battery core and coiled battery battery core, pole piece |
| CN110556500A (en) * | 2018-05-31 | 2019-12-10 | 比亚迪股份有限公司 | Lithium ion secondary battery assembly, preparation method thereof and lithium ion secondary battery |
| CN112490402A (en) * | 2019-09-12 | 2021-03-12 | 比亚迪股份有限公司 | Battery, battery module, battery pack and automobile |
| WO2023173291A1 (en) * | 2022-03-15 | 2023-09-21 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
-
2012
- 2012-08-22 CN CN2012204182378U patent/CN202758972U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106299241A (en) * | 2016-08-22 | 2017-01-04 | 中航锂电（洛阳）有限公司 | A kind of pole piece, the manufacture method of battery core and coiled battery battery core, pole piece |
| CN106299241B (en) * | 2016-08-22 | 2018-09-18 | 中航锂电（洛阳）有限公司 | The production method and coiled battery battery core, pole piece of a kind of pole piece, battery core |
| CN110556500A (en) * | 2018-05-31 | 2019-12-10 | 比亚迪股份有限公司 | Lithium ion secondary battery assembly, preparation method thereof and lithium ion secondary battery |
| CN112490402A (en) * | 2019-09-12 | 2021-03-12 | 比亚迪股份有限公司 | Battery, battery module, battery pack and automobile |
| WO2021047450A1 (en) * | 2019-09-12 | 2021-03-18 | 比亚迪股份有限公司 | Battery, battery module, battery pack, and automobile |
| WO2023173291A1 (en) * | 2022-03-15 | 2023-09-21 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
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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 |
Granted publication date: 20130227 Termination date: 20150822 |
|
| EXPY | Termination of patent right or utility model |