| 摘要 |
PURPOSE: To provide a coin battery having stable seal and high capacity. CONSTITUTION: The upper end opening of a battery case 1 in which a power generating element is housed is sealed with a sealing plate 2 through a gasket 3. A ring 7 having an upper end frame 7a is housed in an inner circumferential part of the battery case 1, the upper end frame 7a is inclined upward on the basis of horizontal surface, and the bottom of the gasket 3 is supported with the upper end frame 7a. The lower end of the ring 7 opposite to the frame 7a is bent in the radial direction to increase a positive active material 4. |
