| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery hardly generating hole-sealing faults of a liquid injection hole, and with high liquid leak resistance. SOLUTION: The sealed battery 1 is provided with a liquid injection hole 11 for injecting electrolyte solution into formed at a battery package body 3, and a hole-sealing tap 6 sealing the liquid injection hole 11. The sealed battery 1 hardly suffers from sealing faults of the liquid injection hole 11 since it is manufactured by applying laser irradiation on a center part 13B of an exposed part 13A of the hole-sealing tap 6 kept exposed at sealing of the liquid injection hole 11, and then, sealing the exposed part 13A by applying laser welding along its outer periphery edge 13C. COPYRIGHT: (C)2008,JPO&INPIT
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