| 摘要 |
PURPOSE:To prevent decomposition of iron sulfide and melting of lithium alloy by the heat generated from heat pat by forming heat insulating layers both sides of heat pat in a thermal battery where an iron sulfide is used for positive electrode while a lithium alloy for negative electrode. CONSTITUTION:A power generating cell 2 integrating a positive electrode consisting of iron sulfide, a negative electrode consisting of lithium-aluminum alloy and an electrolyte layer and a heat pat 1 integrating heat insulating layers 21, 22 such as kaoline at both sides of a power generating layer 23 which is a mixure of zirconium and barium chlomate are laminated and these are housed within a case 11 in order to form a thermal battery. Accordingly, when the heat pad 1 is fired with a firing ball 8 through a fusing plate 10, a high temperature does not reach directly the power generating cell 2. Therefore, the electrolyte layer can be melted and operating condition can be obtained without decomposition of iron sulfide of the positive electrode and melting of lithium alloy of the negative electrode and thereby, life span of battery can be improved. |
