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. 08, 2011
Filed:
Jul. 16, 2003
Applicants:
Makihiro Otohata, Tokyo, JP;
Nobuaki Yoshioka, Tokyo, JP;
Inventors:
Makihiro Otohata, Tokyo, JP;
Nobuaki Yoshioka, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/12 (2006.01); H01M 2/08 (2006.01); H01M 2/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a film-packed battery which stores a battery element () with packing films () and sealed by heat-sealing heat-sealed surfaces of the packing films around the battery element, a heat-sealed portion () projecting toward a battery element is provided at part of a heat-sealed portion (), and a gas releasing portion () is formed close to the projecting heat-sealed portion. A pressure safety valve for safely releasing a gas to the outside when the gas is generated in the battery is provided without lowering the reliability of the battery.