Electrolyte filling equipment especially for filling rechargeable cell with lithium aluminum chloride solution in sulfur dioxide comprises filling cannula which passes through cell filling socket

摘要

Electrochemical cell electrolyte filling equipment (1) comprises a filling cannula (6) passing through the cell filling socket (3). Equipment (1), for filling an electrochemical cell (2) with an electrolyte (9) consisting of salts dissolved in a room temperature gaseous solvent, comprises a vacuum pump (10) and an electrolyte supply unit (5) which can be connected gas-tightly to the cell. The supply unit (5) is connected to a cannula (6) which passes through the cell filling socket (3) and which prevents electrolyte contact with the socket. An Independent claim is also included for a cell electrolyte filling process which uses the above equipment (1) and which comprises gas-tight insertion of the cannula (6) through the cell filling socket (3), positioning of the cannula end (6b) just above the cell electrodes (15), evacuation of the cell (2) by the vacuum pump (10), filling of the cell with electrolyte (9) through the cannula (6), withdrawal of the cannula (6) to just above a closure device (V8) and closure of the filling socket (3).