| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed battery capable of preventing the breakage of a protective circuit existing on the outside of the battery by suppressing the reduction of the sealing performance between a sealing plate and an outer gasket or between the outer gasket and an exterior can, and suppressing the discharge of an electrolyte to the outside of the battery even if the storage temperature is largely changed or the battery is dropped. SOLUTION: This sealed battery is provided with a bottomed tubular exterior can 5 storing a power generating element 4 in it, and a sealing body 6 having a sealing plate 9 folded with a peripheral edge section into a nearly U-shape is fixed to the opening section of the exterior can 5 by caulking via an outer gasket 25. A recess 9a is formed on the sealing plate 9 at the contact portion between the sealing plate 9 and the outer gasket 25.
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