Method and apparatus for filling sodium into sodium sulphur cell

Details Method and apparatus for filling sodium into sodium sulphur cell Method and apparatus for filling sodium into sodium sulphur cell

1980-10-02

1982-12-28

Husar, Francis S.

Metal working

Method of mechanical manufacture

Electrical device making

296231, 29730, H01M 236

Patent

active

043654096

ABSTRACT:
For filling sodium into the sodium reservoir of a sodium-sulphur cell, the reservoir is closed except for an open-ended metal filling tube. In a filling machine, the cell is heated to a temperature such that the sodium will remain liquid, the tube is temporarily sealed around a sodium outlet of the filling machine by an inflatable seal, the reservoir is evacuated of air, flushed with an inert gas and then evacuated for vacuum filling with a metered quantity of sodium through a sodium feed tube within said outlet and extending downwardly into the filling tube. The sodium is pressurized using an inert gas to force the sodium into the cell, the gas is evacuated and the filling tube on the cell sealed by pinching and welding.

REFERENCES:
patent: 4006281 (1977-02-01), Markin et al.
patent: 4287664 (1981-09-01), Chatterji et al.

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