CN103633290A - Lithium ion battery negative electrode piece packaged integrally by using diaphragm paper through coating and hot melting - Google Patents
Lithium ion battery negative electrode piece packaged integrally by using diaphragm paper through coating and hot melting Download PDFInfo
- Publication number
- CN103633290A CN103633290A CN201310561380.1A CN201310561380A CN103633290A CN 103633290 A CN103633290 A CN 103633290A CN 201310561380 A CN201310561380 A CN 201310561380A CN 103633290 A CN103633290 A CN 103633290A
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- CN
- China
- Prior art keywords
- lithium ion
- negative electrode
- ion battery
- diaphragm paper
- battery negative
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- 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.)
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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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- 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
Abstract
The invention provides a lithium ion battery negative electrode packaged integrally by using diaphragm paper through coating and hot melting. The lithium ion battery negative electrode comprises a lithium ion battery negative electrode piece, wherein the negative electrode piece is coated by two layers of diaphragm paper which is slightly larger than the negative electrode piece, and hot-molten around the diaphragm paper, and the diaphragm paper and the negative electrode piece are packaged integrally to form the lithium ion battery negative electrode, and an opening is formed in one end head of the lithium ion battery negative electrode packaged integrally and is positioned in one side of the diaphragm paper. According to the lithium ion battery negative electrode, the negative electrode piece is completely coated by adopting the diaphragm paper, and hot-molten around the diaphragm paper, the negative electrode piece and the diaphragm paper are packaged integrally to form the lithium ion battery negative electrode; then the lithium ion battery negative electrode and a positive electrode pole piece are coiled to form a battery cell. Because the negative electrode piece is coated by the diaphragm paper, and then is hot-molten and packaged, the battery cell is not in contact with the positive electrode pole piece when being coiled, so that the short circuit hidden danger inside the battery cell is eliminated, and the safety and reliability of the battery are improved. The lithium ion battery negative electrode has a good popularization and reference function to the manufacture of similar lithium ion battery cells.
Description
Technical field
The invention belongs to technical field of lithium ion, relate to a kind of lithium ion battery assembly, be specifically related to a kind of battery cathode sheet that core of lithium ion cell is reeled, is packaged as a whole with the coated hot melt of diaphragm paper that is suitable for.
Background technology
Lithium ion battery has the advantages such as voltage is high, electricity capacity large, long circulation life, memory-less effect, quality is light, working range is wide, existing market requires more and more higher to the performance index of lithium ion battery, it not only shows more carrys out superelevation to the requirement of battery capacity, and the security performance that battery is used in terminal requires also higher.Industry personnel knows, lithium ion battery comprises housing, cover plate assembly, battery and electrolyte, and lithium ion battery and cover plate assembly form a confined space, and battery and electrolyte are contained in this confined space.Between the positive plate of battery and negative plate, by diaphragm paper, completely cut off, then reel and make battery.As shown in Figure 1, lithium ion battery, when carrying out battery coiling, is first placed in negative plate 1 between two-layer diaphragm paper 2 conventionally, with diaphragm paper 2, positive plate 3 is separated, and then by the mode of reeling, is rolled into battery.In the process of reeling, need to rectify a deviation by adjusting winding apparatus, guarantee positive plate 3, negative plate 1, two-layer diaphragm paper 2 totally four layers in same straight line, reel.Because positive/negative plate has certain length, and the unsteadiness of diaphragm paper coiling stretching, make battery when reeling, inevitably occur skew in various degree, cause diaphragm paper 2 bags of battery not live negative plate 1, or negative plate 1 and positive plate 3 are moved in the outer rim of diaphragm paper 2 form local contact, thereby cause battery internal short-circuit hidden danger, have a strong impact on battery security, bring great potential safety hazard.
Summary of the invention
The object of this invention is to provide a kind of battery cathode sheet that core of lithium ion cell is reeled, wrapped up with diaphragm paper that is suitable for, it adopts diaphragm paper that negative plate is completely coated, then in diaphragm paper surrounding, carry out hot melt, negative plate is encapsulated together with diaphragm paper to all-in-one-piece lithium ion battery negative, when effectively having solved existing core of lithium ion cell and reeling, contact with the part of positive plate existence, thereby cause battery internal short-circuit hidden danger, have a strong impact on the problem of battery security.
The technical solution adopted in the present invention is, a kind of lithium ion battery negative being packaged as a whole with the coated hot melt of diaphragm paper, the negative plate that comprises lithium ion battery, described negative plate is coated by the two-layer diaphragm paper that is a bit larger tham negative plate, in the surrounding of diaphragm paper by its hot melt, with negative plate encapsulation all-in-one-piece lithium ion battery negative.
The anode plate for lithium ionic cell being packaged as a whole with the coated hot melt of diaphragm paper of the present invention, is further characterized in that a termination of described encapsulation all-in-one-piece lithium ion battery negative is provided with opening in diaphragm paper one side.
The lithium ion battery negative that the present invention is packaged as a whole with the coated hot melt of diaphragm paper, it adopts diaphragm paper that negative plate is completely coated, then in diaphragm paper surrounding, carry out hot melt, negative plate is encapsulated together with diaphragm paper to all-in-one-piece lithium ion battery negative, and then reel together and make battery with positive plate, because negative plate is encapsulated by the coated hot melt of diaphragm paper, when core of lithium ion cell is reeled, no longer contact with positive plate, thereby eliminated the security reliability that battery inside exists short circuit hidden danger, improved battery.
Accompanying drawing explanation
Fig. 1 is existing lithium ion battery cored structure deployed condition schematic diagram;
Fig. 2 is the lithium ion battery negative structural representation that the present invention is packaged as a whole with the coated hot melt of diaphragm paper;
Fig. 3 is the molten lithium ion battery negative deployed condition schematic diagram being packaged as a whole of the present invention.
In figure, 1. negative plate, 2. diaphragm paper, 3. positive plate, 4. battery cathode, 5. opening, 6. lug.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
A kind of lithium ion battery negative being packaged as a whole with the coated hot melt of diaphragm paper, as shown in Figures 2 and 3, the negative plate 1 that comprises lithium ion battery, described negative plate 1 is coated by the two-layer diaphragm paper 2 that is a bit larger tham negative plate 1, in the surrounding of diaphragm paper 2 by its hot melt, with negative plate 1 encapsulation all-in-one-piece lithium ion battery negative 4, a termination of described encapsulation all-in-one-piece lithium ion battery negative 4, is provided with opening 5 in diaphragm paper 2 one sides.
The lithium ion battery negative that the present invention is packaged as a whole with the coated hot melt of diaphragm paper, when battery is reeled, adopt two-layer diaphragm paper 2 that negative plate 1 is completely coated, then in the surrounding of diaphragm paper 2 by its hot melt, after two-layer diaphragm paper 2 hot melts, negative plate 1 is encapsulated together with diaphragm paper 2 to all-in-one-piece lithium ion battery negative 4, make, in the relative confined space of negative plate 1 in two-layer diaphragm paper 2 formation, again encapsulation all-in-one-piece lithium ion battery negative 4 to be reeled and made battery together with positive plate 3 subsequently.
This structural design of the present invention also can be used on the positive pole of lithium ion battery, the lithium ion cell positive that adopts diaphragm paper that the positive plate of lithium ion battery is coated to hot melt and is packaged as a whole by this version, and then reel together and make battery with negative plate, also can play equally and hinder contacting of negative plate and positive plate, eliminate the effect that battery inside exists short circuit hidden danger, raising cell safety reliability.
Above-mentioned execution mode is an example of the present invention, is not for limiting working of an invention and interest field, and all equivalences of making according to the content described in the present patent application scope of patent protection change and modify, and all should be included in the present patent application the scope of the claims.
Claims (2)
1. one kind is coated with diaphragm paper the lithium ion battery negative that hot melt is packaged as a whole, the negative plate (1) that comprises lithium ion battery, it is characterized in that, described negative plate (1) is coated by the two-layer diaphragm paper (2) that is a bit larger tham negative plate (1), in the surrounding of diaphragm paper (2) by its hot melt, with negative plate (1) encapsulation all-in-one-piece lithium ion battery negative (4).
2. the anode plate for lithium ionic cell being packaged as a whole with the coated hot melt of diaphragm paper according to claim 1, is characterized in that a termination of described encapsulation all-in-one-piece lithium ion battery negative (4) is provided with opening (5) in diaphragm paper (2) one sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561380.1A CN103633290A (en) | 2013-11-12 | 2013-11-12 | Lithium ion battery negative electrode piece packaged integrally by using diaphragm paper through coating and hot melting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561380.1A CN103633290A (en) | 2013-11-12 | 2013-11-12 | Lithium ion battery negative electrode piece packaged integrally by using diaphragm paper through coating and hot melting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103633290A true CN103633290A (en) | 2014-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310561380.1A Pending CN103633290A (en) | 2013-11-12 | 2013-11-12 | Lithium ion battery negative electrode piece packaged integrally by using diaphragm paper through coating and hot melting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103633290A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174681A (en) * | 2006-10-30 | 2008-05-07 | 比亚迪股份有限公司 | Pole piece complex body, electric core and lithium ion battery |
| CN101908640A (en) * | 2009-06-03 | 2010-12-08 | 索尼公司 | Battery component |
| CN102959760A (en) * | 2011-04-11 | 2013-03-06 | 松下电器产业株式会社 | Flexible battery and manufacturing method thereof |
| CN203631659U (en) * | 2013-11-12 | 2014-06-04 | 东莞市易升电池有限公司 | Lithium ion battery cathode piece integrated by coating, hot-melting and packaging of diaphragm paper |
-
2013
- 2013-11-12 CN CN201310561380.1A patent/CN103633290A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174681A (en) * | 2006-10-30 | 2008-05-07 | 比亚迪股份有限公司 | Pole piece complex body, electric core and lithium ion battery |
| CN101908640A (en) * | 2009-06-03 | 2010-12-08 | 索尼公司 | Battery component |
| CN102959760A (en) * | 2011-04-11 | 2013-03-06 | 松下电器产业株式会社 | Flexible battery and manufacturing method thereof |
| CN203631659U (en) * | 2013-11-12 | 2014-06-04 | 东莞市易升电池有限公司 | Lithium ion battery cathode piece integrated by coating, hot-melting and packaging of diaphragm paper |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140312 |