| 摘要 |
PURPOSE:To exhaust gas from a sealed battery that uses lithium and oxy halide filled with the gas before explosion and hold the contents of the battery by providing an annular groove on the outer periphery of the side of a negative electrode can and covering the entire of the negative electrode can with heat- shrinkable tubing. 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 glass seal 7 of the metal 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 capactiy 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 and heat-shrinkable resin tubing 10 that covers the entire of the can 5 is provided. |
