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. 21, 1998
Filed:
Dec. 12, 1996
Applicant:
Inventors:
Kazuya Kojima, Kanagawa, JP;
Yasuo Yukita, Kanagawa, JP;
Nobuhiro Fujiwara, Kanagawa, JP;
Yukio Noda, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
429 94 ; 429144 ; 429152 ; 429194 ;
Abstract
Internal shorting of large capacity multi-layer type nonaqueous electrolyte secondary cells is minimized by inclusion of heat resistant porous film layers adjacent thermally fusible resin microporous films disposed between negative electrodes and positive electrodes in an electrode assembly and between adjacent electrode assemblies stacked together to provide an electrode stack. The heat resistant porous film layers may be organic or inorganic temperature resistant sheet materials exhibiting heat resistance to temperatures of at least about 600.degree. C.