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Patent Searching and Data


Title:
POWER STORAGE ELEMENT
Document Type and Number:
WIPO Patent Application WO/2021/230329
Kind Code:
A1
Abstract:
The present embodiment is characterized in being provided with an electrode body, a case in which the electrode body is housed, and a metal external terminal positioned in the case, the external terminal having a flange part spreading along the case on the outside of the case, and a shaft part extending from the flange part and penetrating through the case, the flange part being configured from a cladding material having a plurality of metal layers stacked in the direction in which the shaft part penetrates, and having a through hole through which the shaft part is inserted, the shaft part having an expanded diameter part spreading along the hole peripheral edge part of the through hole of a second metal layer, which is at the case-side end from among the plurality of metal layers, and a crimped part that spreads along the hole peripheral edge part of the through hole of a first metal layer, which is at the end on the opposite side from the case from among the plurality of metal layers, and that sandwiches, between the crimped part and the expanded diameter part, the peripheral edge part of the through hole of the flange part, and the hole peripheral edge part of the first metal layer indenting towards the case side relative to other portions of the first metal layer, and being formed at a position, when viewed from the penetration direction, at which the crimped part is included on the inner side.

Inventors:
NAKAMURA JUN (JP)
KAWAI AKIO (JP)
Application Number:
PCT/JP2021/018261
Publication Date:
November 18, 2021
Filing Date:
May 13, 2021
Export Citation:
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Assignee:
GS YUASA INT LTD (JP)
International Classes:
H01M50/557; H01G11/74; H01M50/516; H01M50/562; H01M50/567
Foreign References:
JP2017130386A2017-07-27
JP2015088464A2015-05-07
JP2019075308A2019-05-16
JP2019109972A2019-07-04
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