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1. WO2014155808 - METHOD FOR MANUFACTURING AND DEVICE FOR MANUFACTURING LITHIUM ION BATTERY

Publication Number WO/2014/155808
Publication Date 02.10.2014
International Application No. PCT/JP2013/080042
International Filing Date 06.11.2013
IPC
H01M 10/058 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
H01M 2/14 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
2Constructional details, or processes of manufacture, of the non-active parts
14Separators; Membranes; Diaphragms; Spacing elements
H01M 4/139 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
139Processes of manufacture
CPC
H01M 10/052
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
H01M 4/0404
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
04Processes of manufacture in general
0402Methods of deposition of the material
0404by coating on electrode collectors
H01M 4/139
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
139Processes of manufacture
H01M 50/403
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
403Manufacturing processes of separators, membranes or diaphragms
H01M 50/46
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
50Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
40Separators; Membranes; Diaphragms; Spacing elements inside cells
46Separators, membranes or diaphragms characterised by their combination with electrodes
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • 株式会社日立ハイテクノロジーズ HITACHI HIGH-TECHNOLOGIES CORPORATION [JP]/[JP]
Inventors
  • 高原 洋一 TAKAHARA, Yoichi
  • 西亀 正志 NISHIKI, Masashi
  • 窪田 千恵美 KUBOTA, Chiemi
  • 二ノ宮 栄作 NINOMIYA, Eisaku
  • 松岡 正興 MATSUOKA, Masaoki
  • 藤井 武 FUJII, Takeshi
Agents
  • 筒井 大和 TSUTSUI, Yamato
Priority Data
2013-06523926.03.2013JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR MANUFACTURING AND DEVICE FOR MANUFACTURING LITHIUM ION BATTERY
(FR) PROCÉDÉ DE FABRICATION ET DISPOSITIF DE FABRICATION D’UNE BATTERIE AU LITHIUM-ION
(JA) リチウムイオン電池の製造方法および製造装置
Abstract
(EN)
After a positive electrode material is applied in a slurry form to the surface of a positive electrode plate using a first slit die coater, a hot air flow is supplied to the surface of a film formed from the positive electrode material, and drying is performed from the surface of the film formed from the positive electrode material to a first depth that does not reach the surface of the positive electrode plate. Thereafter, even if an insulating material is applied in a slurry form to the surface of the film formed from the positive electrode material by a second slit die coater, the thickness of a mixed layer formed at the interface of the positive electrode material layer and the insulating material layer is 5 µm or less, and a thickness can be assured for an insulating material layer that functions as a separator. Thus, reductions in manufacturing yield for a lithium ion battery can be prevented.
(FR)
Selon la présente invention, un matériau d’électrode positive est d’abord appliqué sous forme de suspension à la surface d’une plaque d’électrode positive à l’aide d’un premier agent démoulant refendu, un flux d’air chaud est amené à la surface d’un film formé à partir du matériau d’électrode positive et un séchage est réalisé à partir de la surface du film formé à partir du matériau d’électrode positive jusqu’à une première profondeur n’atteignant pas la surface de la plaque d’électrode positive. Ensuite, même si un matériau isolant est appliqué sous forme de suspension à la surface du film formé à partir du matériau d’électrode positive par un second agent démoulant refendu, l’épaisseur d’une couche mélangée formée au niveau de l’interface de la couche de matériau d’électrode positive et de la couche de matériau isolante est de 5 µm ou moins et une épaisseur peut être garantie pour une couche de matériau isolante servant de séparateur. Ceci permet d’éviter des diminutions de rendement dans la fabrication d’une batterie au lithium-ion.
(JA)
 第1スリットダイコータを用いて正極板の表面にスラリー状の正極材料を塗布した後、正極材料からなる膜の表面に熱風を供給して、正極材料からなる膜の表面から、正極板の表面に達しない第1深さまでを乾燥させる。その後、正極材料からなる膜の表面に、第2スリットダイコータを用いてスラリー状の絶縁材料を塗布しても、正極材料層と絶縁材料層との界面に形成される混合層の厚さは5μm以下となり、セパレータとして機能する絶縁材料層の厚さを確保することができる。これにより、リチウムイオン電池の製造歩留りの低下を防ぐことができる。
Also published as
Latest bibliographic data on file with the International Bureau