| 摘要 |
PURPOSE: To provide a battery excellent in sealing with high productivity by fitting a ring-shaped electric insulating gasket to the internal periphery of an outer tube, and sealing a ring-shaped seal plate press attached between the internal periphery of this gasket and the periphery of an inner tube. CONSTITUTION: After an electrolyte is injected between an outer tube 12 and an inner tube 11, a ring-shaped electric insulating gasket 14 made of polypropylene or the like and a ring-shaped seal plate 15 made of aluminum or the like are mounted on the internal periphery of the outer tube 12. A side edge of the outer tube 12 is calked, to fix the gasket 14 and the seal plate 15. Threreafter by using a pipe expander, an end part of the inner tube 11 is press attached to the seal plate 15 to be sealed. Accordingly, sealing can be easily performed, without giving damage to a volute electrode laminated unit or the like by a temperature rise, to improve productivity and sealing. |
