| 摘要 |
PURPOSE:To exhaust gas from the inner part of a sealed type battery that uses lithium as the negative electrode active material and oxy halide as the solvent of an electrolyte and the positive electrode active material by providing an annular groove on the outer periphery of the side of a negative electrode can. CONSTITUTION:A negative electrode can 5 is comprised with a deep drawing pro cessing 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 made of stainless steel 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 glass seal 7 formed at the inner periphery side of the metal cover 6 and then the collecting body 4 and the piep 8 are welded and 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. An annular groove 9 is formed near almost the center in the axial direction of the outer periphery of the side of the can 5. |
