SODIUM-SULFUR BATTERY

摘要

In a sodium-sulfur battery in which a positive or negative electrode container flange formed by plastic molding, such as the press working, etc., is joined to an insulator ring, the occurence of a defective junction is prevented. The peripheral waviness of container flanges (3 and 4) caused by plastic molding is reduced by providing highly rigid bodies (7 and 7) formed by plastic molding which is performed simultaneously with, before, or after the plastic molding performed on the flanges (3 and 4) at the end sections of the flanges (3 and 4). Alternatively, the peripheral waviness of an aluminum or aluminum alloy ring member put on the joint surface of each container flange with the insulator ring having peripheral waviness caused by plastic molding is reduced by press-fitting and sticking aluminum or an aluminum alloy in and to the recessed section of the flange caused by the waviness while the joint surface of the flange is inserted into a planar rigid jig together with the aluminum or aluminum alloy ring member put on the surface and the jig is pressed against the flange.