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:
Oct. 09, 2012
Filed:
Aug. 05, 2005
Makihiro Otohata, Kanagawa, JP;
Hiroshi Yageta, Kanagawa, JP;
Makihiro Otohata, Kanagawa, JP;
Hiroshi Yageta, Kanagawa, JP;
NEC Corporation, Tokyo, JP;
Abstract
A releasing pressure and a pressure releasing position, when enclosing films are expanded by gas produced at an abnormal time, are easily and positively configured. A film-enclosed battery () has a battery element () and two enclosing films () for sealing the battery element (). The enclosing films () include heat-sealable resin layers and air-impermeable layers, and the heat-sealable resin layers and air-impermeable layers, and the heat-sealable resin layers that are face each other hold the battery element () and seal the battery element () when their peripheral edges are thermally fused. A cross-linking structure () formed by cross-linking heat-sealable resin layer is formed in one of the enclosing films () so that a region in part of a heat-sealed area () has a position exposed to a battery element housing unit and another portion in contact with outside air.