Title:
POWER STORAGE DEVICE
Document Type and Number:
Japanese Patent JP2021103618
Kind Code:
A
Abstract:
To secure a sufficient strength of a case when bonding a wound body and a bottom part of the case.SOLUTION: The present invention relates to a power storage device comprising: a wound body including a first electrode, a second electrode, and a separator interposed between the first electrode and the second electrode; and a case in which the wound body is accommodated. The case includes a bottom part and a side part and includes an opening which is positioned at an opposite side of the bottom part. The first electrode includes a long first core material and a first material layer which is carried by the first core material, and includes an exposure part of the first core material in an end portion of the first core material in a length direction. The case includes a projection protruding from an inner surface of the bottom part, a thickness of the projection in the bottom part is greater than a thickness around the projection, and the exposure part of the first core material is bonded to the projection.SELECTED DRAWING: Figure 4
Inventors:
NAKAMURA YUTA
Application Number:
JP2019233515A
Publication Date:
July 15, 2021
Filing Date:
December 24, 2019
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
H01M50/10; H01G11/06; H01G11/78; H01M10/0587; H01M50/342
Attorney, Agent or Firm:
Kawasaki/Hashimoto Patent Office