| 摘要 |
PROBLEM TO BE SOLVED: To provide a highly reliable sealed battery capable of restraining leak of fluid caused by corrosion of a member (valve) in the battery by infiltration of the liquid from outside toward inside the battery. SOLUTION: The sealed battery comprises a power generation element, a battery case for housing the power generation element, and a sealing plate having a projected section projecting upward in the center as an electrode terminal part and sealing an opening of the battery case. The projected section has an exhaust port for discharging a gas in the battery to the outside at its side, an external package member for covering the exhaust port by fitting to the projected section is mounted on the sealing plate, and the external package member is covered by a heat-shrinking resin film together with the external surface of the battery case. COPYRIGHT: (C)2010,JPO&INPIT
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