AN ALUMINIUM-AIR CELL, AN ALUMINIUM-AIR BATTERY AND A MOTOR UNIT COMPRISING AN ELECTRIC MOTOR AND AN ALUMINIUM-AIR BATTERY

摘要

In a first aspect the present invention relates to an aluminium-air cell and to an aluminium-air battery comprising a plurality of the aluminium-air cells. In a second aspect the present invention relates to a motor unit which comprises the aluminium-air cell or the aluminium-air battery of the invention along with an electric motor. An aluminium-air cell (10) comprises: a casing (12) and within the casing: an air cathode (23); an electrode (27) of aluminium or aluminium alloy spaced from the air cathode; an electrolyte chamber (45) defined between the air cathode and the electrode; an electrolyte liquid; a reservoir cavity (36) separate from the electrolyte chamber for storing the electrolyte liquid; a rotatable shaft (15); a delivery conduit (37) connecting the reservoir cavity and the electrolyte chamber; and an impeller device (20) driven by the rotatable shaft to draw the electrolyte liquid out of the reservoir and pump the drawn electrolyte liquid through the delivery conduit into the electrolyte chamber.