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:
Feb. 18, 2020
Filed:
Jun. 15, 2016
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Yasutaka Kogetsu, Osaka, JP;
Sadayuki Okazaki, Osaka, JP;
Katsuhisa Wadasaki, Osaka, JP;
Yuki Suehiro, Osaka, JP;
Abstract
A winding-type battery includes an electrode group that is formed by winding a first electrode and a second electrode via a separator and has a first end surface and a second end surface. The first electrode includes a first current collector sheet, and a first active material layer formed on its surface. The second electrode includes a second current collector sheet, and a second active material layer formed on its surface. The first current collector sheet includes, at its end disposed on the first end surface of the electrode group, a first uncoated portion having no first active material layer on either surface thereof. An edge surface of the first uncoated portion is at least partially covered with an insulating layer, and an end of the insulating layer projects more than an end of the separator on the first end surface.