公开(公告)号：US20220357398A1

公开(公告)日：2022-11-10

申请号：US17626943

申请日：2020-06-22

Applicant: GS Yuasa International Ltd.

Inventor： Toshihiro YABU ,  Yoshiyuki INOUE

IPC: G01R31/367 ,  G01R31/3835 ,  H01M10/48 ,  H01M50/509 ,  H01M10/42

Abstract: A maintenance method for a power storage device 1 in which a plurality of power storage units 9 in which a plurality of battery cells 11 are connected in series are connected in parallel. The maintenance method includes a comparison step for comparing log data for battery cells 11 that are at the same series connection positions in the power storage units 9 and a determination step for determining, on the basis of comparison results from the comparison step, the power storage unit 9 at which an abnormality has occurred.