CN108336305A - A method of improving pulp of lithium ion battery and coats stability - Google Patents

A method of improving pulp of lithium ion battery and coats stability Download PDF

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Publication number
CN108336305A
CN108336305A CN201711471767.2A CN201711471767A CN108336305A CN 108336305 A CN108336305 A CN 108336305A CN 201711471767 A CN201711471767 A CN 201711471767A CN 108336305 A CN108336305 A CN 108336305A
Authority
CN
China
Prior art keywords
hopper
coating
lithium
rollers
ion battery
Prior art date
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.)
Pending
Application number
CN201711471767.2A
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Chinese (zh)
Inventor
张敬捧
王勇
李涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Goldencell Electronics Technology Co Ltd
Original Assignee
Shandong Goldencell Electronics Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Goldencell Electronics Technology Co Ltd filed Critical Shandong Goldencell Electronics Technology Co Ltd
Priority to CN201711471767.2A priority Critical patent/CN108336305A/en
Publication of CN108336305A publication Critical patent/CN108336305A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • H01M4/139—Processes of manufacture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C15/00—Enclosures for apparatus; Booths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

A method of improving pulp of lithium ion battery and coats stability, it is located at the level altitude of the faying face of transfer coater comma roller and C rollers or more by adjusting the liquid level in hopper, agitating paddle is set in hopper, cover is packed around transfer coater comma roller and C rollers, it is put into solvent in the cover of lower section, when coating tailing, hopper baffle is filled in trough of coating machine, is improved the methods of tailing liquid level and is improved slurry coating stability.

Description

A method of improving pulp of lithium ion battery and coats stability
Technical field
The invention belongs to technical field of lithium ion, are related to a kind of side of improvement pulp of lithium ion battery coating stability Method.
Background technology
With being constantly progressive for lithium ion battery technology of preparing, people are also higher and higher to lithium ion performance requirement, lithium from Sub- battery process technology tends to be ripe substantially, and lithium ion battery, which makes particular procedures control and research, to be become each enterprise quality and compete Emphasis, painting process are lithium ion battery manufacturing process important procedures, and influence the critical process of lithium ion battery quality, this Process needs pulp of lithium ion battery being uniformly coated on affluxion body in lithium ion batteries, and coating homogeneity and stability are aobvious It obtains particularly important.
It is of less demanding to slurry viscosity for transfer coater opposing compression coating machine, it is easy to adjust painting parameter, without stifled Material etc., so nevertheless suffer from the favor of people, but transfer coater is disadvantageous in that for power battery, coating stability compared with Difference can not ensure that pole piece consistency, main cause are that the slurry on applicator roll exposes in air, have portion to the property of slurry It point influences, the demand of especially current lithium ion battery with high energy density is also come bigger, and the application of high-nickel material is consequently also got over Come it is more, high-nickel material in the application to humidity environment require it is very harsh, after the slurry moisture absorption coat stability reduce, direct shadow The quality consistency of this battery is rung, in addition the tail portion slurry coating stability in cell coating machine hopper is difficult control at present, main It is that the slurry in hopper tails off to want reason, and slurry fluidity is deteriorated, and slurry coats precision and is difficult to control.
Invention content
The object of the present invention is to provide a kind of method that improvement pulp of lithium ion battery coats stability, the technology to be solved Problem is to improve pulp of lithium ion battery coating stability, improve battery quality consistency.
The solution of the present invention is：
A method of improving pulp of lithium ion battery and coats stability, it is characterized in that：The liquid level in hopper is adjusted first More than the faying face of transfer coater comma roller and C rollers, and ensure the liquid level in coating process in hopper always Agitating paddle is set in sustained height, hopper and does not stop lateral left and right stirring, stirring amplitude covers the horizontal space of whole hopper, Improve the slurry uniformity in hopper；
Retransfer and pack cover around coating machine comma roller and C rollers, be put into cover below C rollers with slurry same type solvent, it is molten Agent evaporate into C roller pulp surfaces, is conducive to be coated with wild effect caused by alleviating the exposure in air of applicator roll spreading mass；
Finally, when coating tailing, hopper baffle is filled in trough of coating machine, improves tailing liquid level, it is ensured that slurry floods The faying face of comma roller and C rollers ensures coating consistency.
Further, the pulp of lithium ion battery includes anode sizing agent and negative electrode slurry, and the anode sizing agent includes phosphorus Sour iron lithium, lithium manganese phosphate, lithium ferric manganese phosphate, phosphoric acid vanadium lithium, LiMn2O4, cobalt acid lithium, nickel ion doped, nickle cobalt lithium manganate, nickel cobalt aluminium Sour lithium, the negative electrode slurry include artificial graphite, natural graphite, composite graphite, carbonaceous mesophase spherules, hard carbon, soft carbon, graphite Alkene, lithium titanate, silicon, tin.
Further, the filling hopper baffle is polyvinyl chloride, polypropylene, polyethylene material.
Advantages of the present invention is with effect：
1. the liquid level that the present invention is adjusted first in hopper is located at the faying face of transfer coater comma roller and C rollers or more, and And ensure that the liquid level in coating process in hopper is in sustained height always, it is different from traditional coating method, tradition coating In mode, slurry liquid level is relatively low, and the liquid level of " climbing up " is influenced by factors such as ambient temperature, humidity, impurity, coating Precision is difficult to control, and higher levels pressure maintains stable slurry fluidity, reduces ambient temperature, humidity, impurity Etc. factors influence, improve coating stability.
Whole hopper is covered 2. agitating paddle is arranged in trough of coating machine of the present invention and does not stop laterally left and right stirring, stirring amplitude Horizontal space improves the slurry uniformity in hopper.
3. the present invention, which retransfers, increases cover around coating machine comma roller and C rollers, it is put into the cover of C rollers lower section same with slurry Types of solvents, certain density solvent evaporate into C roller pulp surfaces, are conducive to alleviation applicator roll spreading mass exposure and make in air At coating wild effect.
4. it is last in coating, when coating tailing, hopper baffle is filled in trough of coating machine, improves tailing liquid level, Ensure that slurry floods the faying face of comma roller and C rollers, ensures coating consistency, and hopper baffle convenient disassembly, convenient for cleaning, nothing Repacking processing need to be carried out to hopper, use cost is low.
Description of the drawings
Fig. 1 is that coating machine head section figure is shifted in embodiment.
Fig. 2 is head part sectional view when shifting coater tailing in embodiment.
Wherein 1 be hopper, 2 be slurry liquid level, 3 be coating machine comma roller, 4 be coating machine C rollers, 5 be hopper graduation mark, 6 It is cover for slurry agitation paddle, 7,8 be slurry solvent, and 9 be hopper filler material baffle.
Specific implementation mode
Invention is further explained with specific implementation mode for explanation below in conjunction with the accompanying drawings.
The invention discloses a kind of methods that improvement pulp of lithium ion battery coats stability, adjust in hopper 1 first Liquid level is located at the faying face of transfer coater comma roller 3 and C rollers 4 or more, and ensures the liquid in coating process in hopper Face height is in sustained height always.Secondly, agitating paddle 6 is set in hopper and does not stop laterally left and right stirring, stirring amplitude covering is whole Hopper horizontal space, improve hopper 1 in slurry uniformity.In addition, retransferring coating machine comma roller 3 and coating machine C rollers 4 Surrounding packs cover 7, is put into 4 lower section cover 7 of coating machine C rollers and is evaporate into slurry same type solvent, certain density solvent 4 pulp surface of coating machine C rollers is conducive to be coated with wild effect caused by alleviating the exposure in air of applicator roll spreading mass. Coating is last, when coating tailing, hopper 9 plates of gear is filled in trough of coating machine 1, improve tailing liquid level, it is ensured that slurry floods Do not have the faying face of coating machine comma roller 3 and coating machine C rollers 4, ensures coating consistency.
The coating of LiFePO4 slurry, 2 height of LiFePO4 slurry liquid level adjusted first in hopper 1 are located at transfer coated More than the faying face of machine comma roller 3 and coating machine C rollers 4, and ensure that the liquid level in coating process in hopper is in always 5 height of hopper graduation mark.Secondly, agitating paddle 6 is set in hopper and does not stop lateral left and right stirring, stirring amplitude covers whole hopper Horizontal space improves the slurry uniformity in hopper.In addition, retransferring encasement around coating machine comma roller and coating machine C rollers Son 7 is put into 4 lower section cover 7 of coating machine C rollers and evaporate into coating machine C rollers 4 with slurry same type solvent 8, certain density solvent Pulp surface is conducive to be coated with wild effect caused by alleviating the exposure in air of applicator roll spreading mass.It is last in coating, it applies When covering tailing, hopper baffle 9 is filled in trough of coating machine, improves tailing liquid level, it is ensured that slurry floods comma roller 3 and applies The faying face of cloth machine C rollers 4 ensures coating consistency.

Claims (3)

1. a kind of method improving pulp of lithium ion battery coating stability, it is characterized in that：The liquid level adjusted first in hopper is high Degree ensures that the liquid level in coating process in hopper begins more than the faying face of transfer coater comma roller and C rollers It is in sustained height eventually, setting agitating paddle does not stop laterally left and right stirring in hopper, and stirring amplitude covers the laterally empty of whole hopper Between, improve the slurry uniformity in hopper；
Retransfer and pack cover around coating machine comma roller and C rollers, be put into cover below C rollers with slurry same type solvent, it is molten Agent evaporate into C roller pulp surfaces, is conducive to be coated with wild effect caused by alleviating the exposure in air of applicator roll spreading mass；
Finally, when coating tailing, hopper baffle is filled in trough of coating machine, improves tailing liquid level, it is ensured that slurry floods The faying face of comma roller and C rollers ensures coating consistency.
2. a kind of method improving pulp of lithium ion battery coating stability according to claim 1, which is characterized in that described Pulp of lithium ion battery includes anode sizing agent and negative electrode slurry, and the anode sizing agent includes LiFePO4, lithium manganese phosphate, ferric phosphate Manganese lithium, phosphoric acid vanadium lithium, LiMn2O4, cobalt acid lithium, nickel ion doped, nickle cobalt lithium manganate, nickel cobalt lithium aluminate, the negative electrode slurry include people Make graphite, natural graphite, composite graphite, carbonaceous mesophase spherules, hard carbon, soft carbon, graphene, lithium titanate, silicon, tin.
3. a kind of method improving pulp of lithium ion battery coating stability according to claim 1, which is characterized in that described Filling hopper baffle is polyvinyl chloride, polypropylene, polyethylene material.
CN201711471767.2A 2017-12-29 2017-12-29 A method of improving pulp of lithium ion battery and coats stability Pending CN108336305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711471767.2A CN108336305A (en) 2017-12-29 2017-12-29 A method of improving pulp of lithium ion battery and coats stability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711471767.2A CN108336305A (en) 2017-12-29 2017-12-29 A method of improving pulp of lithium ion battery and coats stability

Publications (1)

Publication Number Publication Date
CN108336305A true CN108336305A (en) 2018-07-27

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111299065A (en) * 2020-03-23 2020-06-19 苏州清陶新能源科技有限公司 Liquid level adjusting mechanism and transfer type coating machine
CN112403352A (en) * 2020-10-28 2021-02-26 河北省科学院能源研究所 A silo agitating unit for shifting formula coating machine

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08131934A (en) * 1994-11-04 1996-05-28 Fuji Elelctrochem Co Ltd Intermittent coating method
DE10361055A1 (en) * 2003-12-22 2005-07-21 Eap Lachnit Gmbh Method for surface coating of regular/irregular components with flat surfaces with material application prepared for full width of outlet, but applied to surfaces only, and residue returned
CN101085434A (en) * 2006-06-07 2007-12-12 深圳市比克电池有限公司 Coating method for battery pole piece
JP2009172540A (en) * 2008-01-25 2009-08-06 Fdk Corp Electrode coating method and apparatus, electrode manufacturing method
CN101786072A (en) * 2010-01-22 2010-07-28 深圳市浩能科技有限公司 Slurry stirring device for coating machine
CN202570538U (en) * 2012-05-29 2012-12-05 汕头市欧格包装机械有限公司 Double-surface one-step coating device for coiled base materials
CN203002575U (en) * 2012-12-28 2013-06-19 合肥乐凯科技产业有限公司 Coating spray system
JP2014107148A (en) * 2012-11-28 2014-06-09 Toyota Industries Corp Active material application method of power storage apparatus, and active material application device
CN203678638U (en) * 2013-12-31 2014-07-02 广东凯德能源科技有限公司 Slurry conveying device of lithium battery pole piece coating machine
JP2014229445A (en) * 2013-05-21 2014-12-08 株式会社豊田自動織機 Slurry coating device
CN104588277A (en) * 2013-10-31 2015-05-06 无锡华臻新能源科技有限公司 Method and device for preventing to-be-coated lithium ion battery slurry solvent evaporation
CN206184709U (en) * 2016-11-11 2017-05-24 泰兴联创绝缘材料有限公司 Stable flooding box that volatilizees of deploying troops on garrison duty of scribbling

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08131934A (en) * 1994-11-04 1996-05-28 Fuji Elelctrochem Co Ltd Intermittent coating method
DE10361055A1 (en) * 2003-12-22 2005-07-21 Eap Lachnit Gmbh Method for surface coating of regular/irregular components with flat surfaces with material application prepared for full width of outlet, but applied to surfaces only, and residue returned
CN101085434A (en) * 2006-06-07 2007-12-12 深圳市比克电池有限公司 Coating method for battery pole piece
JP2009172540A (en) * 2008-01-25 2009-08-06 Fdk Corp Electrode coating method and apparatus, electrode manufacturing method
CN101786072A (en) * 2010-01-22 2010-07-28 深圳市浩能科技有限公司 Slurry stirring device for coating machine
CN202570538U (en) * 2012-05-29 2012-12-05 汕头市欧格包装机械有限公司 Double-surface one-step coating device for coiled base materials
JP2014107148A (en) * 2012-11-28 2014-06-09 Toyota Industries Corp Active material application method of power storage apparatus, and active material application device
CN203002575U (en) * 2012-12-28 2013-06-19 合肥乐凯科技产业有限公司 Coating spray system
JP2014229445A (en) * 2013-05-21 2014-12-08 株式会社豊田自動織機 Slurry coating device
CN104588277A (en) * 2013-10-31 2015-05-06 无锡华臻新能源科技有限公司 Method and device for preventing to-be-coated lithium ion battery slurry solvent evaporation
CN203678638U (en) * 2013-12-31 2014-07-02 广东凯德能源科技有限公司 Slurry conveying device of lithium battery pole piece coating machine
CN206184709U (en) * 2016-11-11 2017-05-24 泰兴联创绝缘材料有限公司 Stable flooding box that volatilizees of deploying troops on garrison duty of scribbling

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111299065A (en) * 2020-03-23 2020-06-19 苏州清陶新能源科技有限公司 Liquid level adjusting mechanism and transfer type coating machine
CN111299065B (en) * 2020-03-23 2021-11-12 苏州清陶新能源科技有限公司 Liquid level adjusting mechanism and transfer type coating machine
CN112403352A (en) * 2020-10-28 2021-02-26 河北省科学院能源研究所 A silo agitating unit for shifting formula coating machine

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Application publication date: 20180727

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