公开(公告)号：US20180301672A1

公开(公告)日：2018-10-18

申请号：US15766371

申请日：2016-10-13

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： SEIICHI AOKI ,  KOKI INOUE ,  TOMIYUKI TAGA

IPC: H01M2/04 ,  H01M2/30 ,  H01M10/058 ,  H01M10/04

Abstract: A sealing body for cylindrical batteries includes a clad material that has a first surface and a second surface opposite to the first surface. The clad material includes a first metal layer made of a first metal on the first surface side, and a second metal layer made of a second metal on the second surface side. The clad material is formed so as to include a central portion having a projecting terminal portion, and a collar portion disposed on a rim of the central portion integrally with the central portion. The clad material includes the terminal portion on the first surface side, and a lead welding surface on the second surface side. The first metal has a rigidity higher than that of the second metal.