Title:
ELECTRICITY STORAGE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/131356
Kind Code:
A1
Abstract:
An electricity storage device (electricity storage element (10)) comprises a first member (positive electrode current collector (500) (electrode connection unit (520))), and a second member (electrode body (400) (positive electrode convergence section (410))) disposed on a first direction side of the first member. The first member and the second member have a crimp junction section (20) having an uneven structure that protrudes towards the first direction. The crimp junction section (20) has a first protrusion (electrode body first protrusion (411)) where the second member protrudes in the first direction, a first recess (current collector first recess (523)) where the first member is recessed in the first direction, and a second recess (current collector second recess (524)) that is recessed in the first direction from the first recess.
Inventors:
YAMASAKI MIEKO (JP)
MAEDA KAZUTO (JP)
MAEDA KAZUTO (JP)
Application Number:
PCT/JP2018/046674
Publication Date:
July 04, 2019
Filing Date:
December 19, 2018
Export Citation:
Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M2/26; H01G11/72; H01G11/74
Foreign References:
| JP2015005456A | 2015-01-08 | |||
| JPH07507499A | 1995-08-24 |
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