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:
Sep. 14, 2010
Filed:
Feb. 08, 2005
Naoki Matsumura, Kashiwara, JP;
Emiko Igaki, Amagasaki, JP;
Motoi Kawamura, Kadoma, JP;
Masashi Shoji, Osaka, JP;
Miyuki Nakai, Osaka, JP;
Naoki Matsumura, Kashiwara, JP;
Emiko Igaki, Amagasaki, JP;
Motoi Kawamura, Kadoma, JP;
Masashi Shoji, Osaka, JP;
Miyuki Nakai, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A nonaqueous electrolyte secondary battery of the present invention includes a nonaqueous electrolyte and a positive electrodethat occludes lithium ions reversibly. The positive electrodeincludes active material layersand a sheet-like collectorthat supports the active material layers. The collectorcontains aluminum and at least one element other than aluminum. The average composition that is obtained by averaging the ratio of the elements composing the collectorin the direction of the thickness of the collectoris equal to the composition of an alloy whose liquidus temperature is 630° C. or lower. The present invention makes it possible to prevent heat from being generated due to an internal short circuit in the nonaqueous electrolyte secondary battery.