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:
Mar. 21, 2017
Filed:
Mar. 03, 2014
Nec Energy Devices, Ltd., Sagamihara-shi, Kanagawa, JP;
Koichi Zama, Sagamihara, JP;
Akio Ukita, Sagamihara, JP;
NEC ENERGY DEVICES, LTD., Sagamihara-shi, Kanagawa, JP;
Abstract
A non-aqueous electrolyte secondary battery includes a negative electrode in which a negative electrode active material layer is formed on a negative electrode collector, and a positive electrode laminated on the negative electrode through a separator, in which a positive electrode active material layer is formed on a positive electrode collector. The positive electrode active material layer on a surface of a positive electrode tab drawn from the positive electrode collector has a region which extends in a drawing direction of the positive electrode tab, exceeding a leading end line of a vertically projected negative electrode active material layer opposed to the positive electrode active material layer and in which an existing amount of the positive electrode active material layer is reduced toward its leading end portion.