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. 30, 2013
Filed:
Nov. 08, 2002
Takaaki Kimijima, Fukushima, JP;
Norio Mamada, Fukushima, JP;
Takaaki Kimijima, Fukushima, JP;
Norio Mamada, Fukushima, JP;
Sony Corporation, , JP;
Abstract
Provided is a battery which can reduce expansion caused by gas emission when stored at high temperature. A secondary battery () is constructed such that a flat wound electrode () as a power generating element is sandwiched between exterior members (), having adhesion layers () interposed therebetween. The adhesion layers () are, for example, two-sided adhesive tapes and have a structure such that adhesive layers are formed on both surfaces of a thin plate-shaped support layer. The support layer is preferably made of polypropylene or polyimide. The adhesion layers () are composed of maleated polypropylene whose melting point is preferably in a range from 100° C. to 200° C., more preferably, in a range from 140° C. to 180° C.