| 摘要 |
A sealed battery includes an electrode body; a battery case housing the electrode body and having an open surface; a lid member closing the case; a liquid inlet formed penetrating through the lid member; and a sealing member. The sealing member has: a metal sealing plate welded to the lid member to cover and seal the liquid inlet; and an annular movable portion displaceable between a contact position contacting the entire circumference of the inlet and a non-contact position not contacting at least a portion of the inlet. The movable portion is displaced to the non-contact position when the pressure of the inside region of the battery case sealed by the movable portion in the contact position is increased beyond a limit value with respect to the pressure of the outside region opposite from the inside region with respect to the movable portion. |
