Fuel cell-based vehicle-to-vehicle charging

A method of vehicle-vehicle charging, comprising:

• connecting a charge port of a fuel cell-based vehicle to a second vehicle, the fuel cell-based vehicle including a controller and a charging system, the charging system including a conversion device configured to transfer electrical energy from a fuel cell system to an electric motor of the fuel cell-based vehicle via a propulsion bus, and a switching assembly configured to selectively connect the conversion device to the charge port of the fuel cell-based vehicle;
• operating the switching assembly by the controller to transition the charging system to a charging mode;
• and
• controlling the conversion device to supply power to a battery of the second vehicle according to a requested voltage and current, wherein the vehicle includes a battery system configured to primarily supply electrical power to the electric motor, and the fuel cell system is configured to provide primary power or secondary power to the electric motor, and wherein operating the switching assembly includes electrically connecting the charge port to the conversion device, electrically connecting the battery system to the propulsion bus, and electrically disconnecting the fuel cell system from the conversion device.

A vehicle system, comprising:

• a conversion device configured to transfer electrical energy from a fuel cell system to an electric motor of a vehicle via a propulsion bus;
• a switching assembly configured to selectively connect the conversion device to a charge port of the vehicle;
• and
• a controller configured to operate the switching assembly to transition the vehicle system to a charging mode, the controller configured to control the conversion device to supply power to a battery of a second vehicle, wherein the vehicle includes a battery system configured to primarily supply electrical power to the electric motor, and the fuel cell system is configured to provide primary or secondary power to the electric motor, and wherein the controller is configured to put the vehicle system into the charging mode by electrically connecting the charge port to the conversion device, electrically connecting the battery system to the propulsion bus, and electrically disconnecting the fuel cell system from the conversion device.