公开(公告)号：US20240363978A1

公开(公告)日：2024-10-31

申请号：US18770210

申请日：2024-07-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kazuyoshi HONDA ,  Koichi HIRANO ,  Eiichi KOGA ,  Kazuhiro MORIOKA ,  Tsutomu KOSHIZUKA ,  Akira KAWASE

IPC: H01M50/533 ,  H01M4/64 ,  H01M10/0562 ,  H01M10/0585 ,  H01M50/591

CPC classification number: H01M50/533 ,  H01M4/64 ,  H01M10/0562 ,  H01M10/0585 ,  H01M50/591

Abstract: A battery includes: a power generating element having a stacked structure of power generating layers and current collectors; and a counter electrode terminal. Each of the power generating layers is sandwiched between two adjacent ones of the current collectors. The current collectors are not in contact with each other. At least one of the current collectors includes a protruding portion protruding beyond an end surface of the power generating layer in a side surface portion of the power generating element and a stacked portion in which the power generating layers are stacked. When the protruding portion and the stacked portion are projected onto a projection plane perpendicular to the main surfaces of the power generating layers, the projected area of the protruding portion is larger than the projected area of the stacked portion. The counter electrode terminal is connected to a main surface of the protruding portion.