| 摘要 |
PROBLEM TO BE SOLVED: To provide a film-shaped battery with high safety having a safety valve operating with high precision. SOLUTION: The film-shaped battery provided with a safety valve 40 having a valve body made of resin with a low melting point, formed apart from lead members 21, 22, and heat conduction members 50 connected to the safety valve 40, capable of directly conducting heat generated at a power generating element 10 to the safety valve 40. Namely, heat from the outside of the battery is quickly conducted since the safety valve is arranged at a sealing part of a film-shaped envelope. Further, heat generated at the inside of the power generating element also is quickly conducted to the safety valve by newly arranging heat conduction members effectively conducting the heat generated from the power generating element. As a result, the safety valve can be quickly operated with good precision regardless of whether an abnormal heat source is located inside or outside of the battery. COPYRIGHT: (C)2005,JPO&NCIPI
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