| 摘要 |
PURPOSE:To make it possible to quickly release the internal pressure of a battery by arranging an explosion-proof component comprising a shape memory alloy between a terminal plate and a sealing body, and breaking the sealing body with the explosion-proof component at a temperature higher than the transformation temperature of the shape memory alloy. CONSTITUTION:A breaking component 6 made of a shape memory alloy is arranged between a terminal plate 5 and a sealing body 4. The breaking component 6 memorizes the shape so that it deforms in a straight line at a temperature higher than the transformation temperature of the shape memory alloy. When the temperature of a battery exceeded the transformation temperature of the shape memory alloy by disposing of in fire or outernal short circuit, the breaking component 6 deforms in a straight line and the tip 6a quickly moves in an I direction and breaks the sealing body 4. As a result, the gas inside the battery is quickly released from the broken part. |
