Fuel cell system and power management method thereof

A fuel cell system comprising:

• a fuel cell power generation part;
• a switch circuit having an input terminal and an output terminal, wherein the input terminal is electrically coupled to the fuel cell power generation part;
• a load supply circuit electrically coupled to the output terminal of the switch circuit and for supplying a load with electrical power;
• a status detector electrically coupled to a node between the fuel cell power generation part and the input terminal of the switch circuit and for detecting electrical power provided from the fuel cell power generation part so as to obtain an output voltage of the fuel cell power generation part;
• an electronic load circuit electrically coupled to a node between the fuel cell power generation part and the input terminal of the switch circuit and for performing a current-sinking operation applied to the fuel cell power generation part;
• and
• a control circuit electrically coupled to the status detector and for generating a first control signal and a second control signal according to the value of the output voltage of the fuel cell power generation part, wherein the first control signal is for switching the on-off states of the switch circuit and the second control signal is for controlling a current-sinking value of the electronic load circuit from the fuel cell power generation part.