| 摘要 |
PURPOSE:To improve safety of a battery by disposing electrolyte gelatinizer in the battery which reacts making contact with nonaqueous electrolyte to gelatinize the electrolyte and reduce the quantity of current for preventing an abnormal rise of the temperature of the battery when the temperature of the battery reses to a predetermined temperature. CONSTITUTION:For a battery including a negative electrode 2 with light metal as active material, a positive electrode 1, and nonaqueous electrolyte, electrolyte gelatinizer 5 is disposed in the battery which is normally insulated from the nonaqueous electrolyte and which makes contact with the nonaqueous electrolyte when the battery temperature rises to a predetermined temperature to react and gelatinize the electrolyte. A factor for an abnormal rise of the battery temperature is increase of short-circuit current, and when the battery temperature rises a little caused by an external short circuit of the like, the electrolyte gelatinizer 5 enclosed by a member 4 which dissolves at this temperature comes into contact with the electrolyte to gelatinize it and reduce short-circuit current. An abnormal rise of the battery temperature can thus be prevented. As the electrolyte gelatinizer 5 is insulated from the electrolyte normally, it does not give any harmful effects to normal battery reaction. |
