H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 8/04 (2006.01)
Patent
CA 2326247
A system for controlling the humidity level of a fuel cell is provided. The system includes a fuel cell, a humidifier for humidifying the fuel cell, and a controller for determining the humidity level of the fuel cell and controlling the humidifier in response to the determined humidity level. The resistance of the fuel cell varies as a function of the humidity level of the fuel cell. Thus, in a preferred system, the controller calculates the resistance of the fuel cell to determine the humidity level of the fuel cell. A method for controlling the humidity level of a fuel cell is also provided. The steps of the method include: determining the humidity level of the fuel cell, and humidifying the fuel cell in response to the determined humidity level. In a preferred method, the step of determining the humidity level of the fuel cell includes calculating the resistance of the fuel cell.
Grot Stephen A.
Mathias Mark F.
General Motors Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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