| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed battery wherein a caulking process of fixing a sealing body on the tip of a battery external can via a gasket is reviewed and the tip of the battery external can is hardly corroded. SOLUTION: The sealed battery has the sealing body 18 which is liquid-tightly fixed on an opening of the battery external can 17 at an electrically insulated state with the battery external can 17 via the gasket 30a. The sealing body 18 is fixed on the opening of the battery external case 17 by caulking an opening end side of the battery external can 17. As a warped uphill section 31a at a pointed head side of the caulked opening end of the battery external can 17 is formed on the tip of the gasket 30a, a hollow is covered with a seal material by forming the hollow between the warped uphill section 31a and the tip of the caulked opening end of the battery external can, or the tip of the gasket 30a covers the tip of the caulked opening end of the battery external can. COPYRIGHT: (C)2010,JPO&INPIT |
