SYSTEM FOR MEASURING THE HYGROMETRY OF AN ION EXCHANGE MEMBRANE IN A FUEL CELL
3 Assignments
0 Petitions
Accused Products
Abstract
A system for measuring a moisture content of an ion-exchange membrane in a fuel-cell stack is provided. The fuel-cell stack includes N electrochemical cells separated by bipolar plates, with N being a natural integer. The system includes a current generator, a voltage measurement device, and an impedance measurement device. The current generator enables a current to be applied to the fuel-cell stack. The voltage measurement device measures voltages of the cells of the fuel-cell stack. The impedance measurement device determines an impedance of an ion-exchange membrane according to a voltage ripple measured by the voltage measurement device across terminals of a corresponding one of the cells of the fuel-cell stack when the current is applied by the current generator. The impedance measurement device is installed in the voltage measurement device.
6 Citations
20 Claims
-
1-10. -10. (canceled)
-
11. A moisture measurement system for measuring a moisture content of an ion-exchange membrane in a fuel cell stack that includes N electrochemical cells separated by bipolar plates, where N is a natural integer, the moisture measurement system comprising:
-
a current generator that enables a current to be applied to the fuel cell stack; a voltage measurement system for measuring voltages of the cells; and an impedance measurement device for determining an impedance of a membrane according to a voltage ripple measured by the voltage measurement device across terminals of a corresponding one of the cells when the current is applied by the current generator, the impedance measurement device being installed in the voltage measurement system. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification