| 摘要 |
PROBLEM TO BE SOLVED: To improve insulating performance and airtightness, and to improve reliability by constituting an electrode deriving pin of Al by annealing processing or the alloy. SOLUTION: A positive electrode deriving pin 4 is uniformized in deformation in calking by annealing, and reduces in surface hardeness, and a crack of a surface is hardly caused, so that sealing performance between the pin and an insulating member is improved. That is, the positive electrode deriving pin 4 is deformed in an upper part by calking, the columnar part 4B is also deformed, and deformation quantity is little, so that deformation quantity of an inside insulating plate 13, a metallic plate 3 and an outside insulating plate 14 is also little. In the inside insulating plate 13, the plate-like part 13A and a columnar part 13B are integrally formed with each other, and a columnar part upper part 13C is positioned in an upper part of the metallic plate 3 to secure insulation between the positive electrode deriving pin 4 and the metallic plate 3. Since deformation quantity of the positive electrode deriving pin 4 is small, a split and a crack are not caused, so that airtightness between this pin and the inside insulating plate 13 is excellently held. |
