Batterieelektrodenblatt und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP2421075

Aktenzeichen

EP11177772

Anmeldetag

17. August 2011

Veröffentlichung

12. Oktober 2016

Erteilung

12. Oktober 2016

Rechtsraum

EP

IPC

H01M4/04H01M4/66H01M4/70

Abstract

Embodiments of the present invention provide such things as an electrode sheet having little curl for a spiral wound battery and a manufacturing method therefor. An electrode sheet is such that active material layer(s) is/are present and has/have been subjected to working by rolling at entire surface(s) thereof, except for at least one uncoated region U, of electrode sheet(s) comprising sheet(s) of metal foil(s) S. Moreover, drawn region(s) is/are provided at region(s) uncoated with active material layer(s) in such uncoated region(s) U. By thus creating drawn region(s) at uncoated region(s) of the electrode sheet, curling of the electrode sheet is suppressed, and furthermore, when tension is applied to carry out winding of the electrode sheet and/or convey the electrode sheet to subsequent operation(s), there is reduced likelihood of occurrence of wrinkling and/or tearing in the long direction of the electrode sheet.

Anmelder

Firma

GS Yuasa International Ltd.

Land

🇯🇵 Japan

Fachgebiete