| 摘要 |
The invention provides an electrochemical power storage cell having a molten alkali metal anode 16, a cathode 18 and a separator 14 which separates the anode from the cathode and which is a conductor of the alkali metal of the anode. The cell has a housing 12 divided by the separator into an anode chamber and a cathode chamber, the alkali metal of the anode being located in an enclosure 16, 26 which has a wall or walls comprising two electronically conducting portions separated by an electronically insulating zone 30. The portions are vertically spaced from each other by the zone during cell operation, the upper portion being electronically connected to the cathode by an external circuit 36 and said zone acting as a switch which automatically switches the cell during operation thereof, in response to changes in level of the alkali metal in the enclosure past said zone. <IMAGE> |
