CN100499242C - Winding method of lithium ion battery coiled core - Google Patents
Winding method of lithium ion battery coiled core Download PDFInfo
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- CN100499242C CN100499242C CNB2007100733924A CN200710073392A CN100499242C CN 100499242 C CN100499242 C CN 100499242C CN B2007100733924 A CNB2007100733924 A CN B2007100733924A CN 200710073392 A CN200710073392 A CN 200710073392A CN 100499242 C CN100499242 C CN 100499242C
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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
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Abstract
The present invention relates to a method for winding coil core of lithium ion battery which comprises of steps of: unreeling the first membrane and the second membrane by unwinders of their own respectively at the same time, sending two source of two membranes connected between upper briquetting and lower briquetting of unwinder to be clamped, puncturing coiling needle, and inserting two electrode slices, driving upper briquetting and lower briquetting closed to clamp the next first membrane and the second membrane making the clamped parts of two membranes are connected, starting membrane cutter to cut the two membranes, pressing and binding the coiled coiling core rudiment, the winding coil core of lithium ion battery is obtained. Comparing to the present technique, the present invention can reduce cost of winding coil core of lithium ion battery, and at the same time, is suitable for semi-automatic and full-automatic unwinder and improves the production efficiency.
Description
Technical field the present invention relates to the manufacture method of secondary cell, particularly relates to the method for winding of lithium ion battery coil core.
The coiling of background technology lithium ion cell electrode group volume core is the importance that influences lithium ion battery cost and production efficiency always.The method for winding of prior art lithium ion battery coil core mainly comprises following three kinds of modes:
One. as shown in Figure 1, adopt the monovolume membrane unwinding, when threading a needle, shown in Figure 1A, upper and lower two volume pins 2,3, are walked around last volume pin 3 and are turned back last volume pin 3 parcels again for preceding half section of barrier film 1 barrier film 1 clamping in the stage casing, and barrier film 1 can direct stressed realization coiling like this; Shown in Figure 1B, make the volume pin rotate an angle in the direction of the clock, first electrode slice 4 is inserted; Shown in Figure 1B, roll up pin by upset counterclockwise, insert second electrode slice 5, upset volume pin can wind battery roll core continuously then.This mode possesses the advantage of saving barrier film thereby reducing the battery cost, but also have following deficiency: barrier film 1 uncoiling in advance goes out certain-length or cut-out, again barrier film is intervolved during coiling, twice operation of barrier film, make diaphragm failures during manual the coiling easily, walk around the barrier film uniform tension in order that is difficult to set up permanent tension force or guarantees two barrier films of volume pin during auto reeling, and barrier film uncoiling and coiling do not carry out simultaneously, the effective operation that is difficult to the equipment that guarantees, production efficiency is low, general only suitable manual operations.
Two, as shown in Figure 2, adopt two volume barrier films to unreel simultaneously respectively, when the volume pin is threaded a needle, upper and lower two volume pins 2,3 are clipped in the middle two-layer barrier film 100, among the figure, 4 is first electrode slice, and 5 is second electrode slice, the mode that the volume pin clamps barrier film is that the little gap between the upper and lower two volume pins of regulating and controlling 2,3 planes makes two volume pins that barrier film 100 is clamped, and separates to insert behind two electrode slices more repeatedly upset volume pin and can wind lithium ion battery coil core.It is in full accord that the advantage of this mode is that the tension force of two barrier films can be controlled, and easily is automated; Shortcoming is will waste four layers of barrier film before inserting first electrode slice 4, and cation membrane is the material of comparison costliness, has increased the cost of lithium battery greatly.
Three, as shown in Figure 3, also be to adopt two volume barrier films to unreel simultaneously respectively, when the volume pin is threaded a needle, two-layer barrier film 100 is clipped in, two roll up pins 2 down, in the middle of 3, two-layer barrier film 100 is stretched out and the suitable length of volume pin width, and among the figure, 4 is first electrode slice, 5 is second electrode slice, the mode that the volume pin clamps barrier film is before inserting first electrode slice 4, the gap between the two volume pins suitably to be amplified, thereby barrier film 100 can slide between two volume pins, edge by the volume pin during upset volume pin turns back barrier film 100, inserts first electrode slice 4 again, and then upset volume pin, insert second electrode slice 5, the more continuous upset volume pin core that makes the test of reeling.The tension force of two barrier films of this mode can be controlled in full accord, easily is automated; Than the second way, can save some barrier films comparatively speaking; But, before inserting first electrode slice 4, to waste two-layer barrier film, the cost of lithium battery is still higher.
The summary of the invention the technical problem to be solved in the present invention is to avoid above-mentioned the deficiencies in the prior art part and the method for winding that proposes a kind of lithium ion battery coil core, adopt method for winding of the present invention, the cost of lithium battery is reduced significantly, simultaneously can guarantee the production efficiency height again, can be adapted to semi-automatic or full automatic winding equipment.
The present invention solve the technical problem can be by realizing by the following technical solutions:
Propose a kind of method for winding of lithium ion battery coil core, comprise the steps:
A. article one barrier film and second barrier film are unreeled simultaneously by separately unreeling structure respectively, clamped between upper holder block that the source of two barrier films is bonded together send into up-coiler and the lower lock block, at this moment, article one barrier film and second barrier film intersect the α that has angle in the place, source; After source that described two barrier films bond together is clamped by upper holder block and lower lock block, drive on one deflector roll and move down and push down article one barrier film to strengthen the barrier film tension force between deflector roll and the briquetting;
B. driving upper and lower two volume pins stretches out described article one barrier film clamping, the last volume pin is through between two barrier films, and go up the volume pin be positioned at article one barrier film above, make described upper holder block and lower lock block relative separation again and unclamp described two sources that barrier film bonds together;
C. first electrode slice is inserted between the lower surface and second barrier film of described last volume pin, drive upper and lower two volume pin upsets and make volume pin and described article one barrier film form an angle β, drive and move on the lower guide roll that the second barrier film is gone up on the top so that itself and the applying of article one barrier film, the described deflector roll of going up also moves up synchronously, then second electrode slice is inserted between volume pin and article one barrier film;
D. drive the continuously upset and two barrier films and two electrode slices are wound on become volume core blank on the two volume pins, drive upper and lower two volume pins again and drive the outside that volume core blanks move to upper holder block and lower lock block of upper and lower two volume pins;
E. drive draw close relative of described upper holder block and clamp ensuing article one barrier film and second barrier film with lower lock block, and two barrier films are being bonded together by the folder position, starting the barrier film cutting knife cuts off two barrier films, the volume core blank of having spooled is through compressing, wrap up into lithium ion battery coil core, drive upper and lower two volume pin indentations and be drawn to and roll up outside the core, the volume core is admitted to recovering hopper again;
F. cut two barrier films are bonded in together at the cut-off part front end in the step e, become the coiling source of next volume core, and described upper and lower two volume pins are moved back into initial position again and stretch out described article one barrier film is clamped, and get back to step B, and so forth.
The method for winding of lithium ion battery coil core of the present invention, among the described step C, described first electrode slice and second electrode slice all cut into given length in advance on request before inserting.
The method for winding of lithium ion battery coil core of the present invention, among described steps A and the E, it is to adopt the ultrasonic bonding mode that two barrier films are bonded together, any that is about in described upper holder block and the lower lock block made ultrasonic bonding head.
The method for winding of lithium ion battery coil core of the present invention among described steps A and the E, bonds together two barrier films and can also adopt the blanching mode, specifically is, heats described barrier film cutting knife, and its temperature is enough to described two barrier film blanchings together.
When using the blanching mode that two barrier films are bonded together, the temperature of described barrier film cutting knife is controlled at 150 degree Celsius between 250 degree.
As a further improvement on the present invention, the span of the head top surface width b of described barrier film cutting knife is 0.2～2.0mm, the angle that the head rake is become with horizontal plane is that the span of top rake ε is 0～30 °, and the angle that the head back bevel is become with horizontal plane is that the span of back rake angle δ is 10～60 °.
Compare with prior art, the technique effect of the method for winding of lithium ion battery coil core of the present invention is: 1. adopt two volume barrier films to unreel simultaneously, guarantee the uniform tension in order of two barrier films like this and made to unreel and reel synchronously, be fit to semi-automatic and full automatic winding equipment, improved production efficiency; More main is, behind what a battery roll core of volume, before the segment barrier film, adopt ultrasonic bonding or blanching mode to bond together as next starting point of rolling up two barrier films of core, can make the volume pin penetrate metacneme so just can be directly stressed, just can reel after inserting electrode slice again, therefore, save the two-layer at least barrier film that before inserting first electrode slice, has been wound in the prior art on the pin; In the raw material of lithium battery, barrier film is the material of comparison costliness, according to present calculation of price, adopts method for winding of the present invention, and every lithium battery can reduce several costs of sharing money at least, and the lithium battery volume is big more, and it is also many more to save cost; 2. deflector roll and lower guide roll are set, and they and last lower lock block act on barrier film together to add macromesenterium tension force, make barrier film keep stable state and can not drift about unsteady, thereby guarantee the reliability that clamped by the upper and lower volume pin.
Description of drawings
Fig. 1 is a kind of lithium ion battery coil core method for winding process schematic diagram in the prior art, comprises Figure 1A to Fig. 1 C;
Fig. 2 is an another kind of lithium ion battery coil core method for winding process schematic diagram in the prior art, comprises Fig. 2 A to Fig. 2 C;
Fig. 3 is another lithium ion battery coil core method for winding process schematic diagram in the prior art, comprises Fig. 2 A to Fig. 2 C;
Fig. 4 is the winding process schematic diagram of the method for winding of lithium ion battery coil core of the present invention, comprises Fig. 4 A to Fig. 4 C;
Fig. 5 is the principle schematic of the method for winding of described lithium ion battery coil core;
Fig. 6 is the vertical section schematic diagram of the barrier film cutting knife 60 in the described method for winding.
Embodiment is described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.
The method for winding of lithium ion battery coil core of the present invention can be applicable to full-automatic or semi-automatic lithium ion battery coil core winding apparatus, in conjunction with Fig. 4 and shown in Figure 5, comprises the steps:
A. with article one barrier film 10 and second barrier film 11 respectively by separately unreeling structure 20,21 unreel simultaneously, clamped between upper holder block 30 that the source of two barrier films is bonded together send into up-coiler and the lower lock block 31, at this moment, article one, barrier film 10 intersects the α that has angle with second barrier film 11 in the place, source, be convenient to by last for the state that makes article one barrier film 10 is stable more, two roll up pins 40 down, 41 clamp accurately and reliably, after source that described two barrier films bond together is clamped by upper holder block 30 and lower lock block 31, drive on one deflector roll 70 and move down and push down article one barrier film 10 to strengthen the barrier film tension force between deflector roll 70 and the briquetting; Article one barrier film 10 is tightened and can not be drifted about, conveniently clamped exactly, improve the machining accuracy and the production efficiency of equipment by upper and lower two volume pins 40,41; As shown in Fig. 4 A;
In this step, two barrier films are bonded together can adopt dual mode: the one, adopt the ultrasonic bonding mode, any that is about in described upper holder block 30 and the lower lock block 31 made ultrasonic bonding head.The 2nd, adopt the blanching mode, specifically be, heat described barrier film cutting knife 60, its temperature is enough to described two barrier film blanchings together, the general resistance heating that adopts when adopting the blanching mode, the temperature of barrier film cutting knife 60 is controlled at 150 degree Celsius between 250 degree, promptly as long as the temperature of barrier film cutting knife 60 guarantees to make the barrier film fusion.The concrete enforcement of ultrasonic bonding and blanching all belongs to prior art, just repeats no more herein.
B. shown in Fig. 4 B, driving upper and lower two volume pins 40,41 stretches out described article one barrier film 10 clampings, last volume pin 41 is through between two barrier films, and go up the volume pin be positioned at article one barrier film 10 above, make described upper holder block 30 and lower lock block 31 relative separation again and unclamp described two sources that barrier film bonds together;
C. shown in Fig. 4 C and Fig. 4 D, first electrode slice 50 is inserted between the lower surface and second barrier film 11 of described last volume pin 41, drive upper and lower two volume pins 40,41 upsets and make the volume pin form an angle β, second electrode slice 51 is inserted into rolls up between pin and article one barrier film 10 (combining B) then referring to Fig. 5 with described article one barrier film;
Before inserting second electrode slice 51, drive and move on the lower guide roll 71 that second barrier film 11 is gone up on the top so that it is fitted with article one barrier film 10, described upward deflector roll 70 also moves up synchronously; And described first electrode slice 50 and second electrode slice 51 all cut into given length in advance on request before inserting, and this given length is the length that can just be wound into a battery roll core.
D. referring to Fig. 4 D, drive the upset and two barrier films and two electrode slices are wound on become volume core blank (as shown in Fig. 5 C) on the two volume pins, drive upper and lower two volume pins 40,41 again and drive the outside that volume core blanks move to upper holder block 30 and lower lock block 31 continuously of upper and lower two volume pins 40,41;
E. drive described upper holder block 30 and clamp ensuing article one barrier film 10 and second barrier film 11 with lower lock block 31 relative drawing close, and make two barrier films in bonded together by the folder position (bonding way herein with steps A in identical), starting barrier film cutting knife 60 cuts off two barrier films, the volume core blank of having spooled is through compressing, wrap up into lithium ion battery coil core, drive upper and lower two volume pin 40,41 indentations and be drawn to and roll up outside the core, the volume core is admitted to recovering hopper again;
F. cut two barrier films are bonded in together at the cut-off part front end in the step e, become the coiling source of next volume core, described upper and lower two volume pins 40,41 are moved back into initial position again and stretch out described article one barrier film 10 is clamped (getting back to shown in Fig. 4 A), get back to step B, and so forth.
Among the present invention, as shown in Figure 6, the span of the head top surface width b of described barrier film cutting knife 60 is 0.2～2.0mm, the angle that the head rake is become with horizontal plane is that the span of top rake ε is 0～30 °, and the angle that the head back bevel is become with horizontal plane is that the span of back rake angle δ is 10～60 °.
Claims (6)
1. the method for winding of a lithium ion battery coil core is characterized in that, comprises the steps:
A. article one barrier film (10) and second barrier film (11) are unreeled simultaneously by separately unreeling structure (20,21) respectively, clamped between upper holder block (30) that the source of two barrier films is bonded together send into up-coiler and the lower lock block (31), at this moment, article one barrier film (10) intersects the α that has angle with second barrier film (11) in the place, source; After source that described two barrier films bond together is clamped by upper holder block (30) and lower lock block (31), drive on one deflector roll (70) and move down and push down article one barrier film (10) to strengthen the barrier film tension force between deflector roll (70) and the briquetting;
B. driving upper and lower two volume pins (40,41) stretches out described article one barrier film (10) is clamped, last volume pin (41) is through between two barrier films, and go up the volume pin be positioned at article one barrier film (10) above, make described upper holder block (30) and lower lock block (31) relative separation again and unclamp described two sources that barrier film bonds together;
C. first electrode slice (50) is inserted between the lower surface and second barrier film (11) of described last volume pin (41), drive upper and lower two volume pin (40,41) upsets and make volume pin and described article one barrier film form an angle β, drive and move on the lower guide roll (71) that second barrier film (11) is gone up on the top so that itself and article one barrier film (10) applying, the described deflector roll (70) of going up also moves up synchronously, then second electrode slice (51) is inserted between volume pin and article one barrier film (10);
D. driving upper and lower two volume pins (40,41) overturns continuously and makes two barrier films and two electrode slices be wound on two volumes to become volume core blank on the pins, drive upper and lower two volume pins (40,41) again and drive the outside that volume core blanks move to upper holder block (30) and lower lock block (31);
E. drive draw close relative of described upper holder block (30) and clamp ensuing article one barrier film (10) and second barrier film (11) with lower lock block (31), and two barrier films are being bonded together by the folder position, starting barrier film cutting knife (60) cuts off two barrier films, the volume core blank of having spooled is through compressing, wrap up into lithium ion battery coil core, drive upper and lower two volume pin (40,41) indentations and be drawn to and roll up outside the core, the volume core is admitted to recovering hopper again;
F. cut two barrier films are bonded in together at the cut-off part front end in the step e, become the coiling source of next volume core, described upper and lower two volume pins (40,41) are moved back into initial position again and stretch out described article one barrier film (10) is clamped, and get back to step B, and so forth.
2. the method for winding of lithium ion battery coil core as claimed in claim 1 is characterized in that: among the described step C, described first electrode slice (50) and second electrode slice (51) all cut into given length in advance on request before inserting.
3. the method for winding of lithium ion battery coil core as claimed in claim 1 or 2, it is characterized in that: among described steps A and the E, it is to adopt the ultrasonic bonding mode that two barrier films are bonded together, and any that is about in described upper holder block (30) and the lower lock block (31) made ultrasonic bonding head.
4. the method for winding of lithium ion battery coil core as claimed in claim 1 or 2, it is characterized in that: among described steps A and the E, two barrier films are bonded together be to adopt the blanching mode, specifically be, heat described barrier film cutting knife (60), its temperature is enough to described two barrier film blanchings together.
5. the method for winding of lithium ion battery coil core as claimed in claim 4 is characterized in that: the temperature of described barrier film cutting knife (60) is controlled at 150 degree Celsius to 250 degree.
6. the method for winding of lithium ion battery coil core as claimed in claim 4, it is characterized in that: the span of the head top surface width b of described barrier film cutting knife (60) is 0.2～2.0mm, the angle that the head rake is become with horizontal plane is that the span of top rake ε is 0～30 °, and the angle that the head back bevel is become with horizontal plane is that the span of back rake angle δ is 10～60 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2007100733924A CN100499242C (en) | 2007-02-16 | 2007-02-16 | Winding method of lithium ion battery coiled core |
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| CNB2007100733924A CN100499242C (en) | 2007-02-16 | 2007-02-16 | Winding method of lithium ion battery coiled core |
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| CN100499242C true CN100499242C (en) | 2009-06-10 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101612678B (en) * | 2009-03-31 | 2013-03-27 | 深圳市吉阳自动化科技有限公司 | Diaphragm cutting-off method and cutting-off device |
| CN101767730B (en) * | 2010-01-19 | 2012-06-13 | 深圳市赢合科技股份有限公司 | Membrane unwinding device |
| WO2012023422A1 (en) * | 2010-08-19 | 2012-02-23 | コマツＮｔｃ株式会社 | Electrode winding method and electrode winding device |
| CN102760859B (en) * | 2012-06-19 | 2014-09-17 | 深圳市吉阳自动化科技有限公司 | Device for winding battery pole piece |
| CN102931442B (en) * | 2012-11-05 | 2019-01-04 | 上海乾得智能科技有限公司 | A kind of method of abnormity volume needle winding battery |
| KR101925583B1 (en) * | 2012-11-06 | 2018-12-05 | 삼성에스디아이 주식회사 | Winding appratus for elctrode of rechargeable battery and winding method using thereof |
| CN103219550B (en) * | 2013-02-27 | 2017-06-27 | 理士电池私人有限公司 | A kind of battery electrode group winding apparatus and method for winding |
| JP2014238958A (en) | 2013-06-07 | 2014-12-18 | オートモーティブエナジーサプライ株式会社 | Nonaqueous battery |
| CN105006382A (en) * | 2015-07-20 | 2015-10-28 | 青岛海泰盛电子科技有限公司 | Winding mechanism |
| CN105977506B (en) * | 2016-06-21 | 2018-07-03 | 广东海中新能源设备股份有限公司 | A kind of quadrate lithium battery and its production method |
| CN106140870B (en) * | 2016-07-04 | 2018-02-02 | 东南大学 | Lithium battery pole slice auto reeling method |
| CN108023110B (en) * | 2016-10-31 | 2020-01-14 | 东莞市雅康精密机械有限公司 | Lithium battery cell winding device and method adopting single-roll diaphragm for feeding |
| CN111082130B (en) * | 2020-01-14 | 2020-12-22 | 杨学锁 | Flexible current collector winding core of lithium ion battery, current collector manufacturing process and winding core manufacturing process |
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Address after: 518126 Guangdong city of Shenzhen province Baoan District Fuyong Street South Huaide Chui Huaide Industrial Park District twenty-ninth Building 1 floor, 2 floor and 6 floor Patentee after: SHENZHEN GEESUN INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 518000 Guangdong city of Shenzhen province Baoan District Fuyong Street South Huaide Chui Huaide Industrial Park District twenty-ninth Building 1 floor, 2 floor and 6 floor Patentee before: SHENZHEN JIYANG ZHIYUN TECHNOLOGY Co.,Ltd. |
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