Patent ID: 7833649

Claim:
A battery having a high temperature fluid regulating shutoff valve, said battery comprising: at least one fluid consuming cell comprising; a cell housing comprising one or more fluid entry ports for the passage of a fluid into the cell; 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 into said fluid consuming electrode; and an actuator for operating said valve, said actuator comprising a first shape memory alloy component for opening said valve and a second shape memory alloy component for closing said valve, wherein the first shape memory alloy component actuates the valve at a first temperature to open the valve and the second shape memory alloy component actuates the valve at a second temperature to close the valve, and wherein the second temperature is lower than the first temperature such that the second shape memory alloy component closes the valve upon reaching the second temperature.