公开(公告)号：EP4401178A1

公开(公告)日：2024-07-17

申请号：EP22867085.7

申请日：2022-07-15

申请人： Panasonic Holdings Corporation ,  Panasonic Energy Co., Ltd.

发明人： HIROSE Takayuki ,  UEGAKI Shunsuke ,  OKIMOTO Ryota

IPC分类号： H01M10/04 ,  H01M4/04 ,  H01M4/13 ,  H01M4/139 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/533 ,  H01M50/536 ,  H01M50/548

CPC分类号： Y02E60/10 ,  Y02P70/50 ,  H01M10/0587 ,  H01M4/13 ,  H01M50/533 ,  H01M4/04 ,  H01M10/0525 ,  H01M10/04 ,  H01M4/139 ,  H01M50/536 ,  H01M50/548

摘要： This battery manufacturing method includes: preparation of a wound-type electrode group 2 formed by laminating and winding separators and electrode plates such that the electrode group 2 has recessed parts 70 in first regions R1, which continue from an inner edge at one end in an axial direction E, electrode plates being shorter at the recessed parts 70 than in second regions R2 positioned on the outer side of the first regions R1; bending of end parts of the electrode plates in the second regions R2 in a radial direction B of the electrode group 2; joining of the bent end parts with a collector plate; insertion of the electrode group 2 joined with the collector plate into an exterior can 4 so that the collector plate and a bottom surface of the exterior can 4 face each other; insertion of a press jig 72 into a center space of the electrode group 2; and pressing of the collector plate against the bottom surface to join the collector plate with the exterior can 4.