| 摘要 |
PURPOSE:To obtain a flat sealed battery capable of the long term usage and having the high sealability by pressing-in a revet shaped sealing body, which consists of a shank and a head part having a diameter larger than that of the shank, in an electrolyte filler hole of a battery vessel, and welding the outer peripheral part of the head part to the bottom part of the battery vessel. CONSTITUTION:A cylindrical or taper tubelous electrolyte filler hole 12 is provided at the center of a bottom part 5a of a battery vessel 5, and after the filling of the electrolyte, a shank 13 of a sealing body 13 is pressed-in the electrolyte filler hole 12. Under the condition that the electrolyte filler hole 12 is sealed by the shank 13a of the sealing body 13, the outer poripheral part of a head part 13b of the sealing body 13 is welded to the bottom part 5a of the battery vessel 5. Thereby, at the time of welding of the head part 13b of the sealing body 13 to the bottom part 5a of the vessel part 5, the vaporized material is not leaked out to the part to be welded so as to enable the secure welding without a pin hole, the electrolyte filler hole 12 is perfectly sealed and the battery having the high sealability can be thus obtained. |
