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1. WO2011001617 - WINDING ELECTRODE GROUP AND BATTERY

Publication Number WO/2011/001617
Publication Date 06.01.2011
International Application No. PCT/JP2010/003946
International Filing Date 15.06.2010
IPC
H01M 2/26 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
20Current-conducting connections for cells
22Fixed connections, i.e. not intended for disconnection
26Electrode connections
H01M 4/64 2006.01
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
64Carriers or collectors
H01M 10/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
H01M 10/0587 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
0587of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
CPC
H01M 10/0409
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
0404Machines for assembling batteries
0409for cells with wound electrodes
H01M 10/0431
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
04Construction or manufacture in general
0431Cells with wound or folded electrodes
H01M 10/0525
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
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 10/0587
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
0587of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 2/26
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
20Current conducting connections for cells
22Fixed connections, i.e. not intended for disconnection
26Electrode connections
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 or technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage
Applicants
  • パナソニック株式会社 Panasonic Corporation [JP]/[JP] (AllExceptUS)
  • 植田智博 UEDA, Tomohiro (UsOnly)
  • 佐野陽子 SANO, Yoko (UsOnly)
Inventors
  • 植田智博 UEDA, Tomohiro
  • 佐野陽子 SANO, Yoko
Agents
  • 石井和郎 ISHII, Kazuo
Priority Data
2009-15559530.06.2009JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) WINDING ELECTRODE GROUP AND BATTERY
(FR) GROUPE D'ÉLECTRODES ENROULÉES ET BATTERIE
(JA) 捲回型電極群および電池
Abstract
(EN)
Disclosed is a winding electrode group (12) which comprises an electrically conductive winding core (14) having a columnar shape, a negative electrode sheet (15), a positive electrode sheet (16), and a separator (17) that is disposed between the negative electrode sheet (15) and the positive electrode sheet (16). In the winding electrode group (12), an exposed portion (26) of the negative electrode sheet (15) is joined to the electrically conductive winding core (14) on a first flat portion (20). In the winding electrode group (12), an end edge (28) of the electrically conductive winding core (14) is not located on the surface of a curved surface portion (18) but located on the inside of a circumference (23) of a circle having a predetermined radius in a radial direction of the electrically conductive winding core (14). Also, joint portions (27) where the first flat portion (20) and the exposed portion (26) are joined together are each located on the inside of the circumference (23) of the circle having the predetermined radius in the radial direction of the electrically conductive winding core (14).
(FR)
L'invention porte sur un groupe d'électrodes enroulées (12) qui comprend un noyau d'enroulement électriquement conducteur (14) ayant une forme colonnaire, une feuille d'électrode négative (15), une feuille d'électrode positive (16) et un séparateur (17) qui est agencé entre la feuille d'électrode négative (15) et la feuille d'électrode positive (16). Dans le groupe d'électrodes enroulées (12), une partie exposée (26) de la feuille d'électrode négative (15) est jointe au noyau d'enroulement électriquement conducteur (14) sur une première partie plate (20). Dans le groupe d'électrodes enroulées (12), un bord d'extrémité (28) du noyau d'enroulement électriquement conducteur (14) ne se trouve pas sur la surface d'une partie surface courbe (18) mais se trouve à l'intérieur d'une circonférence (23) d'un cercle ayant un rayon prédéterminé dans une direction radiale du noyau d'enroulement électriquement conducteur (14). De plus, des parties de raccordement (27) dans lesquelles la première partie plate (20) et la partie exposée (26) sont jointes l'une à l'autre sont placées chacune à l'intérieur de la circonférence (23) du cercle ayant le rayon prédéterminé dans la direction radiale du noyau d'enroulement électriquement conducteur (14).
(JA)
 柱状の導電性巻芯14と、負極シート15と、正極シート16と、負極シート15および正極シート16の間に介在するセパレータ17とを備え、負極シート15における露出部26が、第1の平坦部20において導電性巻芯14と接合されている捲回型電極群12において、導電性巻芯14の端縁28は、曲面部18の表面に位置しておらず、所定半径の円周23よりも導電性巻芯14の径方向内側に位置している。第1の平坦部20と露出部26との接合部27も、いずれも所定半径の円周23よりも導電性巻芯14の径方向内側に位置している。
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