| 摘要 |
PURPOSE:To make the cubic efficiency not to be extremely lowered even when becoming small-sized by performing the sealing of a button type cell by welding. CONSTITUTION:A circular ring 3 is made of a synthetic resin or of a natural resin having an electrolyte-resisting property and also somewhat sharing flexibility while its section is L-shaped and the parts denoted by 31 and 32 are made to precipitate metal indium. Next, copper plating is performed thereon and a substance, which has the ratio of metal indium to tin from 30:70 to 70:30 and a melting point of about 120 deg.C, is welded thereon while forming the metalized parts 41 and 42 on the surface of the circular ring 3. The cubic efficiency of the contents of a button type silver cell can be made not to drop even when said cell becomes small-sized by welding the circular ring to an inside can, and an outside. |
