| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealed battery not generating contact failure caused by electrolyte leakage by heat applied for sealing in the sealed battery fitting a sealing plug to a pouring hole of an electrolyte to seal the hole. SOLUTION: A sealing plug 1 having a flange part 11 from which a cylindrical projection part 12 stands up is fit to the pouring hole 7 of the electrolyte having a step part 71 installed in a battery can 5 made of an aluminum alloy or in a cover 2 for sealing a battery can opening part, and then the fitting part is sealed by welding to form the sealed battery, and the sealing plug having the cylindrical projection part 12 or a projection part 41 on at least one peripheral surface of the flange part 11 is used. COPYRIGHT: (C)2007,JPO&INPIT
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