| 摘要 |
PROBLEM TO BE SOLVED: To obtain a coin-shaped cell, in which liquid leakage from a sealed part can be prevented surely, while reduction of cell capacity is suppressed. SOLUTION: A cell can 1 for housing a power generation element 2 includes a cathode can 5 of which an outer peripheral cylindrical wall 12 is bent upward from the outer peripheral brim of a bottom face wall 11, and an anode can 6 of which an outer peripheral side wall 15 is bent downward from the outer peripheral brim of an upper face wall 13. An upper end peripheral brim part of the peripheral cylindrical wall 12 of the cathode can 5 is calking worked inward via a gasket 3 mounted on the outer peripheral side wall 15 of the anode can 6. The outer peripheral side wall 15 of the anode can 6 includes an enlarged diameter part 16 thrusting in a step form an an angle downward from the outer peripheral brim of the upper face wall 13, and a straight part 17 linearly extending downward continually to the enlarged diameter part 16, so that the center of the curvature O of a curving part 12a of the outer peripheral cylindrical wall 12 that is bent inward by the calking work of the outer peripheral cylindrical wall 12 of the anode can 5 is made to be positioned at further outside than the outer peripheral side wall 15 of the anode can 6. COPYRIGHT: (C)2006,JPO&NCIPI |
