CN102760911B - Preparation method of novel high-capacity cylindrical battery cell - Google Patents
Preparation method of novel high-capacity cylindrical battery cell Download PDFInfo
- Publication number
- CN102760911B CN102760911B CN201110105977.6A CN201110105977A CN102760911B CN 102760911 B CN102760911 B CN 102760911B CN 201110105977 A CN201110105977 A CN 201110105977A CN 102760911 B CN102760911 B CN 102760911B
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- pole piece
- cylindrical battery
- preparation
- anode pole
- novel high
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention provides a preparation method of a novel high-capacity cylindrical battery cell which overcomes the problems that the capacity of the existing cylindrical battery is small and the existing high-capacity cylindrical battery has heat concentrated too much and is poor in safety. According to the method, a strip-shaped negative pole piece, a barrier film, a positive pole piece and a barrier film are overlapped in order and then wound on a winding pin. The difference lies in that the negative pole piece and the barrier films are continuously wound in a strip shape, the positive pole piece is a pole piece with multiple equal segments, and equidistant clearances are arranged among the multiple segments of the positive pole piece; when the first turn is formed by winding, a remaining segment is left at the tail end of the negative pole piece and bent reversely so as to cover half a turn of the positive pole piece, and then the positive and negative pole pieces are respectively coated with a layer of metal foil outside, and then continuous winding is completed to form the cell of the cylindrical battery. By using the preparation method of the novel high-capacity cylindrical battery cell provided by the invention, the safety performance of the battery is improved, the heat dissipation performance is improved, the battery capacity is increased and the performance of the battery is improved.
Description
Technical field
The present invention relates to lithium-ion-power cell field, specifically, relate to a kind of preparation method of novel high-capacity cylindrical battery cell.
Background technology
Lithium ion battery is because its operating voltage is high, and specific energy is large, and the outstanding features such as self discharge is little, are widely used in numerous areas, particularly mobile phone, electron trade.Along with the development of lithium battery applications technology, lithium battery is also used for providing power by auto industry gradually.
Lithium ion battery structure conventional is at present mainly stacked and takeup type, for jumbo cylindrical battery, the coiled mode of production of general employing makes battery core, the battery core of coiled lithium ion battery includes winding needle, positive plate, negative plate, barrier film, anode ear and negative electrode lug, separate with barrier film between usual employing positive/negative plate, entirety is wound on winding needle and makes.Usually adopt the lithium ion cylinder battery capacity made in this way and be generally no more than 20 ampere-hours, main cause:
1., once the current convergence that is short-circuited, easily produce blast at short notice;
2. pin prick test is difficult to pass through;
3., in charge and discharge process, heat is not easy to shed, and maximum heat can not accomplish 500 ampere-hours.
Summary of the invention
Technical problem to be solved by this invention, for the technical deficiency of above-mentioned existence, provide one to overcome existing cylindrical battery capacity little, and Large Copacity cylindrical battery excess calories is concentrated, the preparation method of the novel high-capacity cylindrical battery cell of the problem of poor stability.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A preparation method for novel high-capacity cylindrical battery cell, the method is, is stacked together in order by the cathode pole piece-barrier film-anode pole piece-barrier film of band shape, is then wound on winding needle, it is characterized in that:
Described cathode pole piece and barrier film adopt banded roll set continuously, anode pole piece is the isometric pole piece of multistage, equidistant gap is provided with between each multistage anode pole piece, when carrying out roll set first lap, the tail end of cathode pole piece is reserved unnecessary one section and reflexed, cover positive plate half-turn, then at positive/negative plate outer wrapping layer of metal paper tinsel, complete continuous print winding again, be wound into the battery core of cylindrical battery.
In such scheme, the winding method of described anode pole piece is, after cathode pole piece and barrier film roll set, add single hop anode pole piece in relevant position one by one and be interrupted winding together, cathode pole piece and barrier film often reel a circle, then insert a circle anode pole piece, until the completing of winding work.
In such scheme, the winding method of described anode pole piece is, is by adjacent two sections of anode pole piece adhesive tape bonding together, then with cathode pole piece together with barrier film simultaneously continuously roll set.
In such scheme, the gap between described adjacent two anode pole pieces is 3-5mm.
In such scheme, the side of described anode pole piece is welded with lug, and anode pole piece is derived by multiple lug.
In such scheme, the metal forming of described parcel is Copper Foil.
Principle of the present invention, is that the positive plate of battery battery core is adopted multi-disc breakaway-element structure, electric current can be avoided too concentrated, facilitate pin prick test to detect, meanwhile, be enclosed with metal forming at the first lap of roll set, convenient heat radiation, thus can increase battery capacity.
Beneficial effect of the present invention is, reduces current convergence, improves the security performance of battery, improves heat dispersion, add battery capacity, improves the performance of battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention
Fig. 2 is the structural representation of embodiment of the present invention winding the 1st circle.
1. anode pole pieces, 2. lug in figure, 3-gap, 4-barrier film, 5-cathode pole piece, 6-winding needle, 7-metal forming.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated:
The preparation method of a kind of novel high-capacity cylindrical battery cell as shown in Figure 1, this method for winding is, the cathode pole piece 5-barrier film 4-anode pole piece 1-barrier film 4 of band shape is stacked together in order, then be wound on winding needle 6, wherein, described cathode pole piece 5 and barrier film 4 adopt banded roll set continuously, anode pole piece 1 is the isometric pole piece of multistage, equidistant gap 3 is provided with between each multistage anode pole piece 1, when carrying out roll set first lap, the tail end of cathode pole piece 5 is reserved unnecessary one section and reflexed, cover anode pole piece 1 half-turn, then at positive/negative plate outer wrapping layer of metal paper tinsel 7, complete continuous print winding again, be wound into the battery core of cylindrical battery.
In the present embodiment, the winding method of described anode pole piece 1 is, after cathode pole piece 5 and barrier film 4 roll set, add single hop anode pole piece 1 in relevant position one by one and be interrupted winding together, cathode pole piece 5 and barrier film 4 often reel a circle, then insert a circle anode pole piece 1, until winding the completing of work.
In the present embodiment, the winding method of described anode pole piece 1 is, is by adjacent two sections of anode pole piece 1 adhesive tape bonding together, then with cathode pole piece 5 together with barrier film 4 simultaneously continuously roll set.
In the present embodiment, the gap 3 between described adjacent two anode pole pieces 1 is 3-5mm.
In the present embodiment, the side of described anode pole piece 1 is welded with lug 2, and anode pole piece 1 is derived by multiple lug 2.
In the present embodiment, the metal forming 7 of described parcel is Copper Foil.
The anode pole piece 1 of battery battery core is adopted multi-disc breakaway-element structure by the present invention, electric current can be avoided too concentrated, pin prick test is facilitated to detect, simultaneously, be enclosed with metal forming 7 at the first lap of roll set, convenient heat radiation, thus improve heat dispersion, improve the security performance of battery, add battery capacity.
Claims (5)
1. a preparation method for novel high-capacity cylindrical battery cell, the method is, is stacked together in order by the barrier film-cathode pole piece-barrier film-anode pole piece of band shape, is then wound on winding needle; Described cathode pole piece and barrier film adopt banded roll set continuously, anode pole piece is the isometric pole piece of multistage, being provided with equidistant gap between each multistage anode pole piece, when carrying out roll set first lap, the tail end of cathode pole piece being reserved unnecessary one section and reflexed, cover positive plate half-turn, then respectively wrap up the metal forming of one deck connectorless outward at positive/negative plate, now cathode pole piece is a circle half, and anode pole piece is a circle, complete continuous print winding again, be wound into the battery core of cylindrical battery.
2. the preparation method of novel high-capacity cylindrical battery cell as claimed in claim 1, it is characterized in that: the winding method of described anode pole piece is, by adjacent two sections of anode pole piece adhesive tape bonding, then with cathode pole piece together with barrier film simultaneously continuously roll set.
3. the preparation method of novel high-capacity cylindrical battery cell as claimed in claim 1, is characterized in that: the gap between adjacent two sections of anode pole pieces is 3-5mm.
4. the preparation method of novel high-capacity cylindrical battery cell as claimed in claim 1, it is characterized in that: the side of described anode pole piece is welded with lug, anode pole piece is derived by multiple lug.
5. the preparation method of novel high-capacity cylindrical battery cell as claimed in claim 1, is characterized in that: the metal forming of described parcel is Copper Foil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110105977.6A CN102760911B (en) | 2011-04-27 | 2011-04-27 | Preparation method of novel high-capacity cylindrical battery cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110105977.6A CN102760911B (en) | 2011-04-27 | 2011-04-27 | Preparation method of novel high-capacity cylindrical battery cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102760911A CN102760911A (en) | 2012-10-31 |
| CN102760911B true CN102760911B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110105977.6A Expired - Fee Related CN102760911B (en) | 2011-04-27 | 2011-04-27 | Preparation method of novel high-capacity cylindrical battery cell |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201340886Y (en) * | 2008-12-25 | 2009-11-04 | 天津力神电池股份有限公司 | Polymer Li-ion battery structure with quick heat radiating capability |
| CN101640286A (en) * | 2008-08-01 | 2010-02-03 | 上海比亚迪有限公司 | Core of spirally wound lithium battery and spirally wound lithium battery |
| CN101901934A (en) * | 2010-07-22 | 2010-12-01 | 黄祥盛 | Coiled laminate square lithium-ion battery cell and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5011732B2 (en) * | 2006-01-20 | 2012-08-29 | ソニー株式会社 | battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640286A (en) * | 2008-08-01 | 2010-02-03 | 上海比亚迪有限公司 | Core of spirally wound lithium battery and spirally wound lithium battery |
| CN201340886Y (en) * | 2008-12-25 | 2009-11-04 | 天津力神电池股份有限公司 | Polymer Li-ion battery structure with quick heat radiating capability |
| CN101901934A (en) * | 2010-07-22 | 2010-12-01 | 黄祥盛 | Coiled laminate square lithium-ion battery cell and preparation method thereof |
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| CN102760911A (en) | 2012-10-31 |
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Granted publication date: 20150311 Termination date: 20190427 |
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| CF01 | Termination of patent right due to non-payment of annual fee |