| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealed battery having a current breaking mechanism in which at the time of abnormality, the current is cut off precisely and, at the time of normal operation, a comparatively large current can be discharged while preventing rising (increase) of an internal resistance. Ž<P>SOLUTION: The sealed battery 10 is provided with a current cut-off valve 22 and a connecting member 30 having an engagement hole portion 34 formed at a portion adjoining the current cut-off valve. The current cut-off valve is connected capable of current flow with the connecting member by being jointed linearly with the periphery of the engagement hole portion while a part is insertion engaged with the engagement hole portion. When the internal pressure of a battery case 40 has increased exceeding a prescribed level, the current cut-off valve is deformed toward the outside of the case by the internal pressure, and the current cut-off valve is separated from the connecting member, thereby, electric connection of the connecting member and the current cut-off valve is disconnected. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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