| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed battery capable of improving the liquid leakage resistance by increasing the sealing effect by a gasket. SOLUTION: This sealed battery has a battery body 2 impregnated with an electrolyte in a bottomed armor can 1. A lid body 5 formed by laminating a top cover 3 and an inner lid 4 is mounted at an opening end side of the armor can 1, and an outer peripheral part of the lid body 5 is caulked to an opening edge of the armor can 1 through the gasket 6 to seal the inside of the armor can 1 by the lid body 5. A recessed part 20 is formed on an inner face of the armor can 1. Further a recessed part 21 is formed on the inner face of the armor can 1. A projecting part and an recessed and projecting part are optionally formed for these recessed parts. Further plural recessed parts or projecting parts may be formed. |
