Patent ID: 8399141
Filing Date: 2013-03-19
Classification: H01M,Y02E

Abstract:
1. A fuel cell system, comprising: a measuring unit to measure a current value and a voltage value output from a fuel cell; a control unit to control a current output of the fuel cell by adjusting a target voltage value of the fuel cell according to a difference between the measured current value and a target constant current value, and to output a control signal to control the current output of the fuel cell; a converter to convert a voltage output from the fuel cell into a voltage applied to a load according to the output control signal from the control unit; and a battery to store a portion of a power output from the converter during a charging state or to supply a power complementary to the power output from the converter during a discharging state, wherein: the control unit generates the control signal according to both an output voltage of the battery and a difference between the voltage value output from the fuel cell and the adjusted target voltage value, and the control unit controls the converter to output the voltage applied to the load according to the output voltage of the battery to adjust between the charging state and the discharging state of the battery during operation of the fuel cell.