ELECTRODE, ELECTRODE GROUP, AND BATTERY

WIPO Patent Application WO/2022/185464

A1

An electrode according to an embodiment of the present invention is provided with a current collector. The current collector is provided with a current-collector base, and a current-collector tab protruding from a base edge of the current-collector base. The current-collector tab is provided with a first tab-side edge, and a second tab-side edge which is an edge opposite to the first tab-side edge in the width direction. The current collector has formed therein a wrinkle which is recessed in the thickness direction. The wrinkle extends from a first extension end which is positioned at an intersecting part between the first tab-side edge and the base edge of the current-collector base or in the vicinity of the intersecting part, to a second extension end which is positioned at an intersecting part between the second tab-side edge and the base edge or in the vicinity of the intersecting part. The wrinkle is formed in an arc shape which protrudes in a direction in which the current-collector tab protrudes, as seen from the thickness direction.

JP2023546183	Secondary batteries and devices containing them
WO/2022/239449	BATTERY AND LAYER-BUILT BATTERY
WO/2012/124004	WOUND BATTERY AND PRODUCTION METHOD FOR SAME

NAKAZAWA ASUNA (JP)
TANAKA MASANORI (JP)

PCT/JP2021/008320

September 09, 2022

March 04, 2021

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TOSHIBA KK (JP)

H01M50/533

WO2014054734A1	2014-04-10
WO2017038044A1	2017-03-09

JP2013178997A	2013-09-09
JPH0992338A	1997-04-04
JP2019003891A	2019-01-10
JP2003242957A	2003-08-29

KURATA, Masatoshi et al. (JP)

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