CN101791605B - Method for realizing intermittent coating for extrusion coater - Google Patents
Method for realizing intermittent coating for extrusion coater Download PDFInfo
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- CN101791605B CN101791605B CN2010101244433A CN201010124443A CN101791605B CN 101791605 B CN101791605 B CN 101791605B CN 2010101244433 A CN2010101244433 A CN 2010101244433A CN 201010124443 A CN201010124443 A CN 201010124443A CN 101791605 B CN101791605 B CN 101791605B
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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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Abstract
The invention discloses a method for realizing intermittent coating for an extrusion coater, which is a production device of lithium ion batteries. Transfer coating and continuous extrusion coating all have deficiencies, and a high sensitivity control valve is used for realizing intermittent coating in foreign countries but still has expensive construction cost, complex technology and difficult maintenance, so the invention provides the method for realizing intermittent coating for the extrusion coater. The extrusion coater comprises a size seal pot, a precise screw pump, a servo motor, a feed pipeline, a return line, a drainage pipeline, and a pneumatic or servo motor intermittent control valve and the method is characterized in that the servo motor is used for driving the precise screw pump to feed an extrusion head, the pneumatic or servo motor intermittent control valve is arranged on the feed pipeline, and the drainage pipeline is arranged above the extrusion head. The method notonly conforms to the process requirements, has low cost and convenient maintenance, but also provides favorable conditions for batch production of lithium ion power batteries.
Description
Technical field
The present invention relates to a kind of lithium ion battery manufacturing equipment one extrusion coating machine, especially a kind of extrusion coating machine is realized the intermittently mode of coating.
Background technology
Coating is requisite operation in the lithium ion battery production process, also is the critical process that directly influences every performances such as battery security, capacity, uniformity.Coating is exactly the pasty state viscous paste of making, uniformly, continuously or being coated on the matrix (aluminium foil or Copper Foil) of being interrupted, guarantee the consistency of thickness of each coating position and with coating thickness control in the margin of tolerance of technological requirement.The present domestic two kinds of coating methods that have: transfer type and squash type.Transfer type is a kind of mature technique, but its complex structure, the equipment debugging trouble; Because the slurry of transfer type coating machine is in naked state, therefore stock quality is had certain influence, the time slightly length will produce caking, can't apply.
Take charge of engineer's development with great concentration and constantly experiment by me, the extrusion coater technology is increasingly mature, and its frame for movement is simple, and device miniaturization is saved the space, and debugging is convenient; Its coating extrusion head is closed, and slurry was hedged off from the outer world before applying, and therefore can not make slurry rotten because of the reason of ingress of air.
The coating precision of extrusion coater is more high than transfer type coating machine.Present experimental result shows that the transfer type coating thickness limit is 50 μ m, and the squash type coating can reach 20 μ m, is more suitable for producing high-capacity lithium ion cell, especially lithium-ion-power cell.
But all the time, extrusion coater all can only be coated with continuously, can not finish the coating at intermittence that in coating process, requires according to technological standards, this has just caused the back operation of lithium ion battery production must manually scrape the powder operation, the utmost point powder of the coating position at intermittence that both technological standards had been required strikes off, so both waste raw material, expended manpower again.
Abroad, extrusion coater can be realized intermittently coating by the high sensitivity control valve, but the high sensitivity control valve is expensive, does not also have technical capability to develop this kind control valve at home, cause extrusion coater expensive, its price is considerably beyond the transfer type coating machine; Simultaneously, the complex structure of high sensitivity control valve is difficult to safeguard, when the situation of slurry obstruction takes place, needs long clean and maintenance.So from price and safeguard angle, the batch (-type) extrusion coating machine can't be competed mutually with transfer coater.
Summary of the invention
Development purpose of the present invention is to capture the prior art bottleneck, and a kind of intermittently mode of extrusion coated that realizes is provided, and can reach technological requirement and can reduce manufacturing cost again, has improved the intermittently cost performance of coating machine greatly.
A kind of extrusion coating machine of the present invention is realized the intermittently mode of coating, comprise slurry hermetically sealed can, accurate screw pump, servomotor, feed pipeline, return line, drainage pipeline, pneumatic or servomotor intermittently control valve, extrusion head, it is characterized in that: described a kind of extrusion coating machine is realized the intermittently mode of coating, adopt the accurate screw pump feed of driven by servomotor to give extrusion head, the stabilization of speed of servomotor, the control accuracy height, the stability of flow of accurate screw pump, do not have pulsation effect, make feeding system pressure, constant flow; The rotation speed change sensitivity of servomotor reaches the purpose that changes slurry flow by changing rotating speed of motor, thereby regulates coating thickness effectively, accurately.
Described a kind of extrusion coating machine is realized the intermittently mode of coating, on the feed pipeline, install pneumatic or servomotor control valve at intermittence, this control valve can promptly be realized the break-make of feed pipeline, to realize the control at intermittence to the extrusion head feed, reach the intermittently purpose of coating, and redundant sizing agent is carried back hermetically sealed can will intermittently be coated with by return line the time.
Described a kind of extrusion coating machine is realized the intermittently mode of coating, the drainage pipeline also is housed above extrusion head, before beginning coating at every turn, at first make slurry be full of drainage tube and be back in the hermetically sealed can, air in the extrusion head cavity can be got rid of, make to be full of slurry in the extrusion head cavity fully, close drainage tube again and begin coating, can effectively prevent from producing in the coating process bubble.
Beneficial effect of the present invention is: adopt servomotor control mashing pump rotating speed, not only can realize the coating process at intermittence of extrusion coating machine, also can better control coating position and intermittently precision, more meet technological requirement, for the batch process of lithium-ion-power cell provides advantage.
Owing to adopt pneumatic or servomotor control valve at intermittence replacement high sensitivity flow control valve, can not only reach coating accurate requirement intermittently, reduced the manufacturing cost of equipment again significantly, improved the market competitiveness of batch (-type) extrusion coating machine.
Description of drawings
Fig. 1 is the continuous coating method schematic diagram of existing extrusion coating machine;
Fig. 2 is that a kind of extrusion coating machine utilizes accurate flow control valve to realize the intermittently schematic diagram of coating method;
Fig. 3 is that a kind of extrusion coating machine of the present invention is realized the intermittently schematic diagram of coating method;
Among the figure: 01: the slurry hermetically sealed can; 02: accurate screw pump; 03: high sensitivity flow control valve A; 04: the extrusion head cavity; 05: extrusion head; 06: high sensitivity flow control valve B; 07: the feed pipeline; 08: applicator roll; 09: matrix; 10: slurry; 11: servomotor; 12: return line; 13: the drainage pipeline; 14: pneumatic or servo intermittence control valve; 15: cylinder or servomotor; 16: ball valve
The specific embodiment
Embodiment:
As shown in Figure 3: a kind of extrusion coating machine of the present invention is realized the intermittently mode of coating, adopt servomotor 11 to drive accurate screw pump 02 feed and give extrusion head, the stabilization of speed of servomotor 11, the control accuracy height, the stability of flow of accurate screw pump 02, do not have pulsation effect, make feeding system pressure, constant flow; The rotation speed change sensitivity of servomotor 11 can reach the purpose that changes slurry flow by changing rotating speed of motor, thereby regulate coating thickness effectively, accurately.
On feed pipeline 07, install pneumatic or servomotor control valve 14 at intermittence, this control valve can promptly be realized the break-make of feed pipeline 07, to realize the interruption control to extrusion head 05 feed, reach the intermittently purpose of coating, and redundant sizing agent 10 is carried overfall material hermetically sealed cans 01 will intermittently be coated with by return line 12 time.
Drainage pipeline 13 also is housed above extrusion head 05, before beginning coating at every turn, at first make slurry be full of drainage tube and be back in the hermetically sealed can 01, air in the extrusion head cavity 04 can be got rid of, make and be full of slurry in the extrusion head cavity 04 fully, close drainage tube ball valve 16 again and begin coating, can prevent from effectively producing bubble in the coating.
A kind of extrusion coating machine of the present invention is realized the intermittently mode of coating, adopt pneumatic or servomotor control valve at intermittence replacement high sensitivity flow control valve, can not only reach coating accurate requirement intermittently, reduce the manufacturing cost of equipment again significantly, improved the market competitiveness of extrusion coater.
Claims (1)
1. an extrusion coating machine is realized the method that the gap is coated with, this method is used slurry hermetically sealed can, accurate screw pump, servomotor, feed pipeline, return line, drainage pipeline, pneumatic or servomotor clearance control valve, extrusion head, it is characterized in that: described a kind of extrusion coating machine is realized the method for gap coating, adopt the accurate screw pump feed of driven by servomotor to give extrusion head, the stabilization of speed of servomotor, the control accuracy height, the stability of flow of accurate screw pump, do not have pulsation effect, make feeding system pressure, constant flow; The rotating speed segmentation of servomotor changes sensitive, can be by changing rotating speed of motor to reach the purpose that changes the feed flow, thereby effective, trickle control and adjusting coating thickness, on the feed pipeline, install pneumatic or servomotor clearance control valve, this control valve can be realized the break-make of feed pipeline rapidly, to realize the interruption control to the extrusion head feed, reach the purpose of gap coating, and redundant sizing agent is carried back hermetically sealed can when by return line the gap being coated with; Wherein, the drainage pipeline also is housed above extrusion head, before beginning coating at every turn, at first make slurry be full of drainage tube and be back in the hermetically sealed can, air in the extrusion head cavity can be got rid of, make to be full of slurry in the extrusion head cavity fully, close the drainage tube ball valve again and begin coating, can effectively prevent from producing bubble in the coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101244433A CN101791605B (en) | 2010-03-12 | 2010-03-12 | Method for realizing intermittent coating for extrusion coater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101244433A CN101791605B (en) | 2010-03-12 | 2010-03-12 | Method for realizing intermittent coating for extrusion coater |
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| CN101791605A CN101791605A (en) | 2010-08-04 |
| CN101791605B true CN101791605B (en) | 2013-07-17 |
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| CN2010101244433A Active CN101791605B (en) | 2010-03-12 | 2010-03-12 | Method for realizing intermittent coating for extrusion coater |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101285999B1 (en) * | 2011-04-14 | 2013-07-15 | 삼성에스디아이 주식회사 | Coating Apparatus for Electrode Plate of Secondary Battery |
| CN102989635B (en) * | 2011-09-13 | 2015-06-17 | 稳得工业股份有限公司 | Female thread leak-proof material coating method and device thereof |
| CN102569729A (en) * | 2012-01-09 | 2012-07-11 | 惠州市德赛锂电科技有限公司 | Process for forming of positive electrodes of lithium batteries |
| CN102658255B (en) * | 2012-05-10 | 2013-10-30 | 深圳市浩能科技有限公司 | Intermittent extrusion coater |
| JP6343891B2 (en) * | 2013-09-24 | 2018-06-20 | 日本電気株式会社 | Intermittent coating apparatus and intermittent coating method |
| CN104028425B (en) * | 2014-06-18 | 2017-05-10 | 东莞玖龙纸业有限公司 | Rapid online paint switching and waste paint recycling technology and equipment |
| CN106513225A (en) * | 2016-12-23 | 2017-03-22 | 深圳市浩能科技有限公司 | Coating machine slurry circulation method and system |
| CN109814483A (en) * | 2019-02-20 | 2019-05-28 | 湖南科霸汽车动力电池有限责任公司 | The control method of battery pole piece slurry filling weight |
| CN110560335A (en) * | 2019-09-25 | 2019-12-13 | 上海精珅新材料有限公司 | Online mixing and feeding system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6314638B1 (en) * | 1996-06-19 | 2001-11-13 | Toshiba Battery Co., Ltd. | Apparatus for manufacturing electrode plate for nonaqueous electrolyte battery |
| CN101279315A (en) * | 2007-04-06 | 2008-10-08 | 中外炉工业株式会社 | Intermittent coating method and apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4651809B2 (en) * | 2000-11-24 | 2011-03-16 | 大日本印刷株式会社 | Coating equipment |
| JP2005040757A (en) * | 2003-07-25 | 2005-02-17 | Sony Corp | Paint feeding device and paint feeding method |
| JP2009028605A (en) * | 2007-07-25 | 2009-02-12 | Fujifilm Corp | Method and apparatus for intermittent coating |
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- 2010-03-12 CN CN2010101244433A patent/CN101791605B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6314638B1 (en) * | 1996-06-19 | 2001-11-13 | Toshiba Battery Co., Ltd. | Apparatus for manufacturing electrode plate for nonaqueous electrolyte battery |
| CN101279315A (en) * | 2007-04-06 | 2008-10-08 | 中外炉工业株式会社 | Intermittent coating method and apparatus |
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