| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage apparatus which can combine reliable interruption of a current during abnormal operation of the power storage apparatus, and avoidance of current interruption during electrification operation.SOLUTION: The power storage device includes a current interrupter connected in series with an electrification path from an electrode assembly to an electrode terminal and connecting or interrupting the electrification path. The current interrupter includes a first isolation chamber and a second isolation chamber isolated from the electrode assembly in a case, a deformation plate which isolates the first isolation chamber and second isolation chamber, and deforms to the second isolation chamber side so as to interrupt the electrification path depending on the pressure difference &Dgr;P=P1-P2 of the pressure P1 in the first isolation chamber and the pressure P2 in the second isolation chamber, and a hydrogen permeable film which isolates the first isolation chamber and the inside of the case, and makes hydrogen permeate from the inside of the case to the first isolation chamber selectively. |
