CN104218211A - Electrode piece - Google Patents
Electrode piece Download PDFInfo
- Publication number
- CN104218211A CN104218211A CN201310216696.7A CN201310216696A CN104218211A CN 104218211 A CN104218211 A CN 104218211A CN 201310216696 A CN201310216696 A CN 201310216696A CN 104218211 A CN104218211 A CN 104218211A
- Authority
- CN
- China
- Prior art keywords
- piece body
- electrode piece
- protective layer
- pole piece
- electrode
- 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
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/021—Physical characteristics, e.g. porosity, surface 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides an electrode piece composed of an electrode piece body, an electrode tab and a protective layer; the protective layer is a PE or PC film, the electrode tab is arranged on one side of the electrode piece body, the electrode piece body is arranged inside the protective layer, and the upper surface and the lower surface of the electrode piece body are in contact with the protective layer; according to the electrode piece, because of arrangement of the protective layer, short circuit of the electrode piece due to thermal contraction is effectively prevented; and with a rectangular structure of the electrode piece body, and a specific proportion relationship of the long sides and the short sides, the electrode piece is not required to be wound into a traditional electrode volume in the using process, thereby greatly reducing the internal resistance of the electrode piece, improving the multiplying power, and being suitable for needs of large-scale industrialized production.
Description
Technical field
The present invention relates to electrodes of lithium-ion batteries production field, especially a kind of electrode slice.
Background technology
Lithium ion battery has the advantages such as voltage is high, specific energy is high, recycle often, memory time is long, not only on a portable electronic device as mobile phone, Digital Video and laptop computer are used widely, and be widely used in the big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool, therefore more and more higher to the performance requirement of lithium ion battery.Electrode plates is the important component part of lithium ion battery, is very important link in lithium ion battery production process, and be the core of lithium ion battery, existing electrode plates is in use easily short-circuited, and greatly have impact on the normal use of battery.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of electrode slice.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of electrode slice; be made up of pole piece body, lug and protective layer; described protective layer is PE(polyethylene) or PC(Merlon) film; described lug is arranged at the side of described pole piece body; described pole piece body is arranged at protective layer inside, and the upper and lower surface of this pole piece body contacts with protective layer respectively.
Preferably, above-mentioned electrode slice, described pole piece body is rectangle structure, and its long edge lengths is 1.5-4 times of bond length.
Preferably, above-mentioned electrode slice, the long edge lengths of described pole piece body is 2.5-3 times of bond length.
Preferably, above-mentioned electrode slice, the middle part of described pole piece body is coating material district, and the edge of described pole piece body is clear area.
Structure of the present invention has following beneficial effect:
Above-mentioned electrode slice; due to the setting of protective layer; effectively prevent pole piece short circuit because of thermal contraction; the rectangle structure of pole piece body; and the special ratios relation of long limit and minor face, make electrode slice in use without the need to being wound into traditional electrode roll, thus greatly reduce the internal resistance of electrode slice; improve multiplying power, be applicable to the needs of large-scale industrial production.
Accompanying drawing explanation
Fig. 1 is the structural representation of electrode slice of the present invention.
In figure: 1-lug 2-pole piece body 3-coating material district 4-clear area 5-protective layer
Embodiment
For further illustrating the present invention, accompanying drawing is now coordinated to be described in detail:
As shown in Figure 1; described electrode slice; be made up of pole piece body 2, lug 1 and protective layer 5, described protective layer 5 is PC film, and described lug 1 is arranged at the side of described pole piece body 2; described pole piece body 2 is rectangle structure; its long edge lengths is 3 times of bond length, and the middle part of described pole piece body 2 is coating material district 3, and the edge of described pole piece body is clear area 4; described pole piece body 2 is arranged at protective layer inside 5, and the upper and lower surface of this pole piece body 2 contacts with protective layer 5 respectively.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. an electrode slice; it is characterized in that: be made up of pole piece body, lug and protective layer, described protective layer is PE or PC film, and described lug is arranged at the side of described pole piece body; described pole piece body is arranged at protective layer inside, and the upper and lower surface of this pole piece body contacts with protective layer respectively.
2. electrode slice according to claim 1, is characterized in that: described pole piece body is rectangle structure, and its long edge lengths is 1.5-4 times of bond length.
3. electrode slice according to claim 2, is characterized in that: the long edge lengths of described pole piece body is 2.5-3 times of bond length.
4. electrode slice according to claim 1, is characterized in that: the middle part of described pole piece body is coating material district, and the edge of described pole piece body is clear area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216696.7A CN104218211A (en) | 2013-05-31 | 2013-05-31 | Electrode piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310216696.7A CN104218211A (en) | 2013-05-31 | 2013-05-31 | Electrode piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104218211A true CN104218211A (en) | 2014-12-17 |
Family
ID=52099499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310216696.7A Pending CN104218211A (en) | 2013-05-31 | 2013-05-31 | Electrode piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104218211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675372A (en) * | 2021-07-13 | 2021-11-19 | 宁德新能源科技有限公司 | Electrochemical device and electronic device |
-
2013
- 2013-05-31 CN CN201310216696.7A patent/CN104218211A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113675372A (en) * | 2021-07-13 | 2021-11-19 | 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 |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141217 |