Integrated thermal management system

An integrated thermal management system for a fuel cell electric vehicle, comprising:

• a fuel cell system;
• a brake resistor;
• a fuel cell coolant loop comprising a fuel cell radiator thermally and fluidly coupled to the fuel cell system;
• a brake resistor coolant loop comprising a brake resistor radiator thermally and fluidly coupled to the brake resistor, wherein the brake resistor loop comprises an expansion tank;
• and
• a heat exchanger loop comprising a coolant-coolant heat exchanger thermally and fluidly coupled to the fuel cell coolant loop and the brake resistor coolant loop,
• wherein, in a brake resistor cooling operating mode, heat is transferred from the brake resistor to an ambient environment through the brake resistor radiator.

An integrated thermal management system for a fuel cell electric vehicle, comprising:

• a fuel cell system;
• a brake resistor;
• a fuel cell coolant loop comprising a fuel cell radiator thermally and fluidly coupled to the fuel cell system;
• a brake resistor coolant loop comprising a brake resistor radiator thermally and fluidly coupled to the brake resistor;
• a heat exchanger loop comprising a coolant-coolant heat exchanger thermally and fluidly coupled to the fuel cell coolant loop and the brake resistor coolant loop;
• and
• a heating, ventilation, and air conditioning (HVAC) coolant loop thermally and fluidly coupled to the brake resistor coolant loop,
• wherein, in a brake resistor cooling operating mode, heat is transferred from the brake resistor to an ambient environment through the brake resistor radiator, and
• wherein, in the brake resistor cooling operating mode, the HVAC coolant loop is bypassed.