Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 8, 2011
Patent Application Number
10512844
Date Filed
July 16, 2003
Patent Primary Examiner
Patent abstract
In a film-packed battery which stores a battery element (9) with packing films (8a, 8b) and sealed by heat-sealing heat-sealed surfaces of the packing films around the battery element, a heat-sealed portion (6) projecting toward a battery element is provided at part of a heat-sealed portion (5), and a gas releasing portion (7) 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.
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