| 摘要 |
PURPOSE:To surely prevent explosion caused by incorrect use such as short in a nonaqueous solvent battery by forming a lead wire using to connect a negative electrode and positive electrode which are accommodated in a can to each terminal, with a shape memorizing alloy. CONSTITUTION:In a spiral lithium-thionayl chloride battery, a belt-shaped negative electrode 4 of an electrode group 2 is connected to a can 1 by a negative lead wire 8 such as a nickel peace. A positive lead wire 15 comprising a shape memorizing alloy such as Ni-Ti familh alloy is connected and fixed to a belt- shaped positive electrode 3, and also press-connected to a lead peace 14 of a positive terminal 11. In this battery, when heat is generated inside the battery by incorrect use such as short, the positive lead 15 returns to a shape memorized at high temperature, thereby connection is cut and circuit is opened. Therefore, heat generation is discontinued. When the negative lead wire 8 or both lead wires 8 and 15 are made with shape memorizing alloy, the same effect is also obtained. |
