公开(公告)号：US20180131009A1

公开(公告)日：2018-05-10

申请号：US15573566

申请日：2016-06-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUKI SUEHIRO ,  SEIICHI AOKI ,  YASUHIRO SUZUKI ,  KATSUHISA WADASAKI

IPC: H01M6/10 ,  H01M2/08

CPC classification number: H01M6/10 ,  H01M2/08 ,  H01M10/0431 ,  H01M10/052 ,  H01M10/0587

Abstract: In a winding-type battery, the first electrode and the second electrode are wound via the separator to form an electrode group having first and second end surfaces. The first electrode includes a first current collector sheet, and a first active material layer formed on a surface of the first current collector sheet. A first current collecting lead is connected to the first electrode. The second electrode includes a second current collector sheet, and a second active material layer formed on a surface of the second current collector sheet. A second current collecting lead is connected to the second electrode. At an end of the first electrode that is disposed on the first end surface and/or an end of the first electrode that is disposed on the second end surface, at least a winding termination portion located on the outermost periphery of the electrode group has a notch.

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.