System and method for battery charging of a fuel cell plug-in hybrid vehicle having an electric compressor or turbocharger

A vehicle comprising:

• a fuel cell;
• a motor driving a compressor to supply airflow to the fuel cell;
• a battery;
• a converter electrically connected between the motor and the battery;
• a plug configured to selectively connect the motor to an external voltage to modify amplitude of the external voltage supplied to the converter and charge the battery;
• and
• a controller configured to reduce the airflow to the fuel cell responsive to detecting the external voltage.

A fuel cell plug-in hybrid vehicle comprising:

• a fuel cell having an anode side and a cathode side;
• a compressor connected to the cathode side via an air supply line;
• an electric motor mechanically coupled to the compressor;
• a high-voltage battery;
• a converter connected electrically between the electric motor and the high-voltage battery;
• and
• a controller configured to switch between at least a first operating state wherein the high-voltage battery supplies electrical power to the electric motor via the converter to drive the compressor, and a second operating state, wherein an external power supply voltage is connected to at least one of the electric motor and the converter such that the electric motor modifies amplitude of the external power supply voltage and supplies the modified voltage to the converter, and the converter converts the voltage into a DC voltage supplied to the high-voltage battery to charge the high-voltage battery.