| 摘要 |
PURPOSE:To exhaust gas from the inner part of a sealed type battery that uses lithium and oxy halide filled with the gas before explosion by solidifying, liquefying, and heat-treating a processing can that comprises a negative electrode can and forming an annular groove on the outer periphery of the side of the can. CONSTITUTION:A negative electrode can 5 is comprised with a deep drawing processing can made of stainless steel and a negative electrode 1 made of lithium, separator 2, positive electrode 3 of a carbon porous molding body, and a positive electrode collecting body 4 are contained internally. A metal cover 6 is welded to the opening section of the can 5 and an electrolyte made of oxy halide is injected from a metal pipe 8 that is welded to the galss seal 7 of the metal cover 6 and the can is sealed. The capacity of oxy halide occupied in the total amount of the space capacity in the sealed structure and the capacity of oxy halide is 75 capacity % or more. After the can 5 is deep-drawn and processed and then is solidified, liquefied, and heat-treated, an annular groove 9 is formed near almost the center in the axial direction of the outer periphery of of the side. |
