Patent ID: 7785745
Filing Date: 2010-08-31
Classification: H01M,Y02E

Abstract:
1. A fuel cell apparatus comprising: a cell stack of an active direct methanol type, the cell stack comprising an anode and a cathode; and a DC-DC converter configured (i) to receive output voltage of the cell stack, (ii) to control the output voltage which becomes greater than a lower-limit threshold, (iii) to control an output current of the cell stack to be in a range of a second current value to a first current value, the first current value corresponds to a minimum value of a coefficient, the second current value corresponds to a value of the coefficient that makes a water collecting mechanism unnecessary, and the coefficient is a coefficient related to a volume of water moved, (iv) to execute a constant current control so that the output current of the cell stack becomes a third current value in the range of the second current value to the first current value, and (v) to execute a constant voltage control of the output voltage when the output voltage becomes close to the lower-limit threshold during the constant current control.