CN101969140A - Novel winding method of lithium ion battery pole group - Google Patents
Novel winding method of lithium ion battery pole group Download PDFInfo
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- CN101969140A CN101969140A CN2010102376980A CN201010237698A CN101969140A CN 101969140 A CN101969140 A CN 101969140A CN 2010102376980 A CN2010102376980 A CN 2010102376980A CN 201010237698 A CN201010237698 A CN 201010237698A CN 101969140 A CN101969140 A CN 101969140A
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- negative plate
- lithium ion
- barrier film
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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 discloses a novel winding method of a lithium ion battery pole group, which comprises the following steps: respectively longitudinally fixing a positive lug and a negative lug on a positive plate and a negative plate which are placed horizontally; centrally fixing the negative plate on a diaphragm which is placed horizontally; placing a winding needle at the edge of the left end part of the negative plate, oppositely folding the diaphragm along the winding needle positioned at the edge of the left end part of the negative plate to form a two-layer diaphragm, and simultaneously, keeping the negative plate to be centrally fixed between the two layers of the diaphragm formed after oppositely folding; winding the two-layer diaphragm formed after oppositely folding around the winding needle for a circle; and centrally placing the positive plate on the upper surface of the two-layer diaphragm formed after oppositely folding, and then, winding around the winding needle to finally obtain the lithium ion battery pole group. The novel winding method of the lithium ion battery pole group, which is disclosed by the invention, can effectively avoid the contact between the positive plate and the negative plate, reduce the cross contamination between the positive plate and the negative plate and ensure the overall service performance of the lithium ion battery.
Description
Technical field
The present invention relates to battery manufacturing technology field, particularly relate to a kind of novel coiling method of lithium ion cell electrode group.
Background technology
At present, advantages such as lithium ion battery has the specific energy height, recycles often, memory time is long, not only on portable electric appts, be used widely as mobile phone, Digital Video and laptop computer, and be widely used in big-and-middle-sized electrical equipment aspects such as electric automobile, electric bicycle and electric tool, therefore the up-to-standard rate to lithium ion battery requires more and more higher.
Along with the continuous development of lithium ion battery industry, more and more higher to the performance requirement of battery.Existing lithium ion battery manufacture method can be divided into takeup type and stacked two kinds according to utmost point assembling prescription formula.
For existing lithium ion battery manufacture method, in the winding process process of lithium ion cell electrode group, owing to take manual work mode, positive plate and negative plate often come in contact, form the cross pollution between positive plate and the negative plate easily, badly influence the overall performance of lithium ion battery like this, reduced the product use experience of battery user.
Therefore, press for the method for winding of developing a kind of lithium ion cell electrode group at present, it can avoid coming in contact between positive plate and the negative plate easily and effectively, reduces the cross pollution between positive plate and the negative plate, guarantees the whole serviceability of lithium ion battery.
Summary of the invention
In view of this, the novel coiling method that the purpose of this invention is to provide a kind of lithium ion cell electrode group, it can avoid coming in contact between positive plate and the negative plate easily and effectively, reduce the cross pollution between positive plate and the negative plate, guarantee the whole serviceability of lithium ion battery, strengthen the product use experience of battery user greatly, be applicable to large-scale production application, be of great practical significance.
For this reason, the invention provides a kind of novel coiling method of lithium ion cell electrode group, described battery utmost point group includes positive plate, negative plate, insulation diaphragm, anode ear and negative electrode lug, comprises step:
Anode ear and negative electrode lug are vertically fixed on the positive plate and negative plate of horizontal positioned;
Negative plate is fixed between two parties on the barrier film of horizontal positioned;
With rolling up the edge, left part that pin is placed on negative plate, then barrier film is folded to form double-deck barrier film along the volume pin that is positioned at edge, negative plate left part, make that simultaneously negative plate keeps being fixed between two parties between the double-deck barrier film that forms after the doubling;
With the volume pin as spool, with the double-deck barrier film that forms after the doubling around the volume pin circle of reeling;
Positive plate is placed on the double-deck barrier film upper surface that forms after the doubling between two parties, reels round the volume pin then, finally obtain the utmost point group of lithium ion battery.
Wherein, described negative plate is fixed on the barrier film of horizontal positioned between two parties with adhesive tape.
By above technical scheme provided by the invention as seen, compared with prior art, the invention provides a kind of novel coiling method of lithium ion cell electrode group, it can avoid coming in contact between positive plate and the negative plate easily and effectively, reduce the cross pollution between positive plate and the negative plate, guarantee the whole serviceability of lithium ion battery, strengthen the product use experience of battery user greatly, be applicable to large-scale production application, be of great practical significance.
Description of drawings
Fig. 1 is the flow chart of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention;
Fig. 2 is the schematic diagram one of specific implementation process of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention;
Fig. 3 is the schematic diagram two of specific implementation process of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention;
Fig. 4 is the schematic diagram three of specific implementation process of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention;
Fig. 5 is the schematic diagram four of specific implementation process of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention;
Fig. 6 is the schematic diagram five of specific implementation process of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention;
Fig. 7 is the schematic diagram six of specific implementation process of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention.
Embodiment
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with drawings and embodiments.
Fig. 1 is the flow chart of the novel coiling method of a kind of lithium ion cell electrode group provided by the invention.
Referring to Fig. 1, the invention provides a kind of novel coiling method of lithium ion cell electrode group, be applicable to the coiling of coiled battery utmost point group, described battery utmost point group includes positive plate, negative plate, insulation diaphragm, anode ear and negative electrode lug, and this method may further comprise the steps:
The first step: anode ear and negative electrode lug are vertically fixed on the positive plate and negative plate of horizontal positioned;
In the present invention, on the specific implementation, referring to Fig. 2, Fig. 3, described anode ear and negative electrode lug adopt the mode of ultrasonic bond welding to be separately fixed on positive plate and the negative plate respectively.
Second step: negative plate is fixed between two parties with adhesive tape on the barrier film of horizontal positioned (being the centre position of barrier film),, then carried out for the 3rd step referring to Fig. 4;
The 3rd step: referring to Fig. 5, the volume pin is placed on the edge, left part of negative plate, hand-held then barrier film, barrier film is carried out doubling and hangs over rolling up on the pin along the volume pin that is positioned at edge, negative plate left part, form double-deck barrier film, the position of the negative plate after the doubling is adjusted in maintenance simultaneously, makes that negative plate keeps being fixed between two parties between the double-deck barrier film that forms after the doubling;
The 4th step: with the volume pin as spool, with the double-deck barrier film that forms after the doubling around the volume pin circle of reeling;
The 5th step: positive plate is placed on the double-deck barrier film upper surface that forms after the doubling between two parties,, reels round the volume pin then, finally obtain the utmost point group of lithium ion battery referring to Fig. 6, Fig. 7.
Need to prove, because negative plate is fixed between the double-deck barrier film between two parties, and positive plate is placed on double-deck barrier film upper surface, therefore, there is barrier film to separate mutually between positive plate and the negative plate, thereby reduced the number of times that in the winding process of battery utmost point group, comes in contact between the positive plate and negative plate effectively, effectively reduced the cross pollution between the positive plate and negative plate in the winding process.
For the present invention, on the specific implementation, the lithium ion cell electrode group that forms of reeling is regular shape, for example is rectangle shown in Figure 7, anode ear on the described lithium ion cell electrode group and negative electrode lug can be positioned at the same side of battery utmost point group, also can be positioned at the opposite side both sides of battery utmost point group.
Novel coiling method for lithium ion cell electrode group provided by the invention, owing in the end carry out in the winding process, has two-layer barrier film, one deck positive plate, one deck negative plate, and negative plate is fixed between the two-layer barrier film between two parties, with the volume core serves as that axle is reeled, positive plate and negative plate all are centered at barrier film, guaranteed that barrier film envelopes negative plate and positive plate respectively, thereby guarantee to have between positive plate and the negative plate barrier film to separate, the opposite of positive plate has negative plate to coat, make positive plate and the negative plate not to come in contact, reduced the intersection dirt between the positive plate and negative plate in the winding process, improved the overall performance of battery.
Meaning of the present invention is effectively to control positive plate in the battery manufacturing process and the cross-infection between the negative plate, guarantees battery performance.The novel coiling method of lithium ion cell electrode group provided by the invention is applicable to designing and developing and making of takeup type electricity core, and production effect is good, and technology simple, be applicable to large-scale production application.
For the present invention, by above-mentioned method for winding, can avoid effectively coming in contact between positive plate and the negative plate, thereby effectively reduce the cross pollution between the positive plate and negative plate in the winding process, save diaphragm material simultaneously, save cost.
In sum, compared with prior art, the novel coiling method of a kind of lithium ion cell electrode group provided by the invention, it can avoid coming in contact between positive plate and the negative plate easily and effectively, reduce the cross pollution between positive plate and the negative plate, guarantee the whole serviceability of lithium ion battery, strengthen the product use experience of battery user greatly, be applicable to large-scale production application, be of great practical significance.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle 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 (2)
1. the novel coiling method of a lithium ion cell electrode group is characterized in that, described battery utmost point group includes positive plate, negative plate, insulation diaphragm, anode ear and negative electrode lug, comprises step:
Anode ear and negative electrode lug are vertically fixed on the positive plate and negative plate of horizontal positioned;
Negative plate is fixed between two parties on the barrier film of horizontal positioned;
With rolling up the edge, left part that pin is placed on negative plate, then barrier film is folded to form double-deck barrier film along the volume pin that is positioned at edge, negative plate left part, make that simultaneously negative plate keeps being fixed between two parties between the double-deck barrier film that forms after the doubling;
With the volume pin as spool, with the double-deck barrier film that forms after the doubling around the volume pin circle of reeling;
Positive plate is placed on the double-deck barrier film upper surface that forms after the doubling between two parties, reels round the volume pin then, finally obtain the utmost point group of lithium ion battery.
2. novel coiling method as claimed in claim 1 is characterized in that described negative plate is fixed on the barrier film of horizontal positioned between two parties with adhesive tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102376980A CN101969140A (en) | 2010-07-27 | 2010-07-27 | Novel winding method of lithium ion battery pole group |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102376980A CN101969140A (en) | 2010-07-27 | 2010-07-27 | Novel winding method of lithium ion battery pole group |
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| CN101969140A true CN101969140A (en) | 2011-02-09 |
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| CN2010102376980A Pending CN101969140A (en) | 2010-07-27 | 2010-07-27 | Novel winding method of lithium ion battery pole group |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437378A (en) * | 2011-12-29 | 2012-05-02 | 广东国光电子有限公司 | Winding forming method of lithium ion battery |
| CN103825056A (en) * | 2014-03-24 | 2014-05-28 | 四川剑兴锂电池有限公司 | Method for winding lithium battery cell |
| CN104577215A (en) * | 2014-12-31 | 2015-04-29 | 深圳市赢合科技股份有限公司 | Pole piece winding method and equipment |
| CN108183264A (en) * | 2017-12-22 | 2018-06-19 | 力神电池（苏州）有限公司 | A kind of preparation method of cylindrical lithium ion battery pole group and its battery pole group |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003086233A (en) * | 2001-09-07 | 2003-03-20 | Mitsubishi Electric Corp | Flat plate type battery |
| CN200979902Y (en) * | 2006-11-01 | 2007-11-21 | 叶羽纺 | A rolled and flake shaped high current lithium ion battery |
| CN101083342A (en) * | 2006-05-30 | 2007-12-05 | 深圳市比克电池有限公司 | Winding flexible packing lithium ionic cell unit, cell and process for production |
-
2010
- 2010-07-27 CN CN2010102376980A patent/CN101969140A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003086233A (en) * | 2001-09-07 | 2003-03-20 | Mitsubishi Electric Corp | Flat plate type battery |
| CN101083342A (en) * | 2006-05-30 | 2007-12-05 | 深圳市比克电池有限公司 | Winding flexible packing lithium ionic cell unit, cell and process for production |
| CN200979902Y (en) * | 2006-11-01 | 2007-11-21 | 叶羽纺 | A rolled and flake shaped high current lithium ion battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437378A (en) * | 2011-12-29 | 2012-05-02 | 广东国光电子有限公司 | Winding forming method of lithium ion battery |
| CN103825056A (en) * | 2014-03-24 | 2014-05-28 | 四川剑兴锂电池有限公司 | Method for winding lithium battery cell |
| CN104577215A (en) * | 2014-12-31 | 2015-04-29 | 深圳市赢合科技股份有限公司 | Pole piece winding method and equipment |
| CN108183264A (en) * | 2017-12-22 | 2018-06-19 | 力神电池（苏州）有限公司 | A kind of preparation method of cylindrical lithium ion battery pole group and its battery pole group |
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Application publication date: 20110209 |