| 摘要 |
PROBLEM TO BE SOLVED: To provide a safety device capable of easily, repeatedly exhausting at any time gas in a battery case to the outside, and to provide a sealed storage battery. SOLUTION: The safety device 170 includes an automatic opening closing mechanism 160 in which when inner pressure of a battery case 110 is in a prescribed releasing value or less, a first communication passage 171b is kept in a closing state, and when the inner pressure of the battery case 110 exceeds the prescribed value, the first communication passage 171b is opened and gas in the battery case 110 is exhausted to the outside, and then the first communication passage 171b is closed again. The safety device 170 furthermore includes a forced opening closing means 180 in which even when the inner pressure in the battery case 110 is the prescribed releasing value or less, the first communication passage 171b is forced to open, and then it can be closed again. COPYRIGHT: (C)2009,JPO&INPIT
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