Method and Apparatus for Controlling a Power Transmission Device and a Fuel Cell Power System

A method and apparatus for controlling a power transmission device and a fuel cell power system are disclosed. The method includes (i) acquiring a sensing signal indicating an output voltage of a fuel cell power supply, the fuel cell power supply providing power to other devices via a power transmission device, (ii) comparing the output voltage indicated by the sensing signal to at least one of a high voltage threshold and a low voltage threshold, the voltage range between the high voltage threshold and the low voltage threshold representing a range of expected output voltages of the fuel cell power supply, and (iii) in response to the output voltage being not lower than the high voltage threshold, controlling the power transmission device to increase the current input from the fuel cell power supply to the power transmission device, or in response to the output voltage being not higher than the low voltage threshold, controlling the power transmission device to reduce the current input from the fuel cell power supply to the power transmission device. In this way, the lifespan and performance of fuel cells can effectively be improved.