The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2020
Filed:
Jun. 20, 2016
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Yuki Suehiro, Osaka, JP;
Seiichi Aoki, Osaka, JP;
Yasuhiro Suzuki, Kyoto, JP;
Katsuhisa Wadasaki, Osaka, JP;
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.