Patent ID: 7732089

Claim:
A battery comprising: a cell housing comprising one or more fluid entry ports for the passage of a fluid into the cell housing; a first fluid consuming electrode disposed within said cell housing; a second electrode disposed within said cell housing; and a fluid regulating system comprising: a valve for adjusting the rate of passage of the fluid to said fluid consuming electrode, said valve comprising a first plate and a second plate each having opposing surfaces adjacent each other, said first plate being rotatable relative to said second plate within a first plane so as to at least partially align an opening in the first plate with an opening in the second plate to open said valve and to misalign the openings in the first plate and second plates to close said valve wherein power from the fluid consuming cell is applied to the actuator to open and close the valve; and an actuator for actuating said valve, said actuator comprising a first shape memory alloy component actuatable to rotate the first plate relative to the second plate to open the valve and a second shape memory alloy component actuatable to rotate the first plate relative to the second plate to close the valve; wherein the fluid regulating system further comprises a lever arm, the actuator applies a force to the lever arm for pivoting the first plate about a pivot point.