| 摘要 |
In a sodium sulphur cell having, within a metal housing, a ceramic electrolyte tube (10) separating the liquid alkali metal from the cathodic reactant, a current collector (14) extends into the region inside the electrolyte tube (10) and is electrically insulated from the electrolyte by an insulating element (11). The metal housing (18,24) is sealed to the insulating element (11) in a region around the current collector (14) which region has a maximum cross-section substantially less than the maximum cross-section of the electrolyte tube and preferably lies wholly within the outer periphery of the electrolyte tube (10). The small seal areas with the constructions described give improved economy and reliability. The construction has particular advantages with cells of short length. <IMAGE> |
