Abstract: An integrated thermal management system for a fuel cell electric vehicle is disclosed. The integrated thermal management system includes a fuel cell system, a brake resistor, a fuel cell coolant loop that includes a fuel cell radiator thermally and fluidly coupled to the fuel cell system, a brake resistor coolant loop that includes a brake resistor radiator thermally and fluidly coupled to the brake resistor, and a heat exchanger loop that includes a coolant-coolant heat exchanger thermally and fluidly coupled to the fuel cell coolant loop and the brake resistor coolant loop. In a fuel cell cooling operating mode, heat is transferred from the fuel cell system to an ambient environment through the fuel cell radiator and the brake resistor radiator.

Abstract: Disclosed are methods for managing power distribution to a plurality of thermal components of a vehicle. A method may include, responsive to receiving a power budget, allocating, by a thermal management module (TMM), a first power allocation to each active thermal component of the plurality of thermal components. A method may further include allocating, by the TMM, a second power allocation to each active thermal component of the plurality of thermal components based on a power consumption of each active thermal component of the plurality of thermal components. A method may further include allocating, by the TMM, a third power allocation to each active thermal component of the plurality of thermal components by equally distributing any excess power from the power budget following the first power allocations and the second power allocations.

Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.

Abstract: The present disclosure provides a powertrain thermal management system for managing thermal loads in the powertrain of an electric vehicle. The system may comprise a first coolant flow path comprising a flow split valve upstream of a first DC-DC converter, a second coolant flow path comprising a first electric motor, a third coolant flow path comprising a second electric motor, a bypass valve positioned downstream of the first DC-DC converter, the first electric motor, and the second electric motor, and a radiator positioned one of directly upstream or directly downstream of the bypass valve. The first coolant flow path, the second coolant flow path, and the third coolant flow path are fluidly connected in parallel.

Abstract: The present disclosure provides a method of managing thermal loads in the powertrain of an electric vehicle and controlling various electronic components of a powertrain thermal management system. The method may include heating a coolant of a powertrain coolant loop utilizing waste heat from a liquid-cooled powertrain component (e.g., an electric motor, a DC-DC converter, etc.), measuring a coolant temperature, and utilizing combined feedforward and feedback control methods for different components (pump(s), radiator fan(s), valve(s)) of the powertrain thermal management system.

Abstract: The present disclosure provides a method for heating a dual stack fuel cell system of a vehicle. The method may include receiving a heat power request from a first fuel cell stack, receiving a first temperature of the first fuel cell stack and a second temperature of a second fuel cell stack, initiating, responsive to the first temperature and the second temperature indicating that the first fuel cell stack and the second fuel cell stack are frozen, a freeze-start thermal operating mode for the first fuel cell stack, and transferring, during the freeze-start thermal operating mode for the first fuel cell stack, heat from a brake resistor to the first fuel cell stack.

Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.

Abstract: An electric vehicle includes a first heat exchanger positioned adjacent to a front of the electric vehicle and configured to transfer heat generated from a first heat generating system to an ambient environment. The electric vehicle may further include a second heat exchanger positioned adjacent to a rear of the electric vehicle and configured to transfer heat generated from a second heat generating system to the ambient environment, and an air supply plenum positioned longitudinally between the first heat exchanger and the second heat exchanger and in fluid communication with the ambient environment. The air supply plenum may define a cooling air pathway extending between the ambient environment and the second heat exchanger. The air supply plenum may isolate air flowing through the cooling air pathway from air circulating within the electric vehicle.

Abstract: The present disclosure provides a method of managing thermal loads in the powertrain of an electric vehicle and controlling various electronic components of a powertrain thermal management system. The method may include heating a coolant of a powertrain coolant loop utilizing waste heat from a liquid-cooled powertrain component (e.g., an electric motor, a DC-DC converter, etc.), measuring a coolant temperature, and utilizing combined feedforward and feedback control methods for different components (pump(s), radiator fan(s), valve(s)) of the powertrain thermal management system.

Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.

Abstract: The present disclosure provides a method of managing thermal loads in an electric vehicle and controlling various electronic components of a thermal management system. The method may comprise heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and measuring refrigerant temperature(s) and pressure(s) at an output of a chiller. The measured temperature(s) and pressure(s) may be utilized by the thermal management system as feedback signals for performing a proportional-integral-derivative control to compute an electronic expansion valve position command.

Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell electric vehicle. The method may include measuring a coolant temperature at an outlet of a fuel cell radiator, calculating a fuel cell coolant flow value, calculating a fuel cell heat generation value, calculating a feedback portion of a fuel cell radiator fan speed command using the coolant temperature at the outlet of the fuel cell radiator, calculating a feedforward portion of the fuel cell radiator fan speed command using an ambient temperature, the fuel cell coolant flow value, and the fuel cell heat generation value calculating the fuel cell radiator fan speed command using the feedforward portion and the feedback portion, and controlling a fuel cell radiator fan speed using the fuel cell radiator fan speed command.

Abstract: An integrated thermal management system for a fuel cell electric vehicle is disclosed. The integrated thermal management system includes a fuel cell system, a brake resistor, a fuel cell coolant loop that includes a fuel cell radiator thermally and fluidly coupled to the fuel cell system, a brake resistor coolant loop that includes a brake resistor radiator thermally and fluidly coupled to the brake resistor, and a heat exchanger loop that includes a coolant-coolant heat exchanger thermally and fluidly coupled to the fuel cell coolant loop and the brake resistor coolant loop. In a fuel cell cooling operating mode, heat is transferred from the fuel cell system to an ambient environment through the fuel cell radiator and the brake resistor radiator.

Abstract: A vehicle has a thermal management system that comprises an electric power source loop comprising at least one battery. The thermal management system further comprises a heating component thermally coupled to the electric power source loop. When an ambient temperature is less than a first threshold, the heating component pre-heats the at least one battery. In exemplary embodiments, the heating component includes at least one brake resistor that is coupled to the electric power source loop.

Abstract: The present disclosure provides a thermal management system for an electric vehicle. The electric vehicle may include a cabin, a battery system, a battery coolant loop including a battery coolant line thermally coupled to the battery system, a heat pump loop including a heat pump line thermally coupled to an internal heat exchanger, and a refrigerant-coolant heat exchanger thermally coupled to the battery coolant loop and the heat pump loop. The thermal management system may be configured to provide heating or cooling to the cabin or battery system depending on an operating mode.

Abstract: A vehicle has a thermal management system that comprises an electric power source loop comprising at least one battery. The thermal management system further comprises a heating component thermally coupled to the electric power source loop. When an ambient temperature is less than a first threshold, the heating component pre-heats the at least one battery. In exemplary embodiments, the heating component includes at least one brake resistor that is coupled to the electric power source loop.

Abstract: The present disclosure provides a thermal management system for an electric vehicle. The electric vehicle may include a cabin, a battery system, a battery coolant loop including a battery coolant line thermally coupled to the battery system, a heat pump loop including a heat pump line thermally coupled to an internal heat exchanger, and a refrigerant-coolant heat exchanger thermally coupled to the battery coolant loop and the heat pump loop. The thermal management system may be configured to provide heating or cooling to the cabin or battery system depending on an operating mode.

Abstract: An electric vehicle has a thermal management system that comprises a common radiator, a brake resistor loop, and an electric power source loop. The brake resistor loop comprises a brake resistor and a brake resistor controller that are coupled to the common radiator. The electric power source loop comprises an electric power source coupled to the common radiator. When the brake resistor loop is determined to be in operation, the common radiator is utilized by the brake resistor loop to absorb heat generated by the brake resistor loop. When the brake resistor loop is determined to not be in operation, the common radiator is utilized by the electric power source to absorb heat generated by the electric power source loop.

Abstract: An electric vehicle has a thermal management system that comprises a common radiator, a brake resistor loop, and an electric power source loop. The brake resistor loop comprises a brake resistor and a brake resistor controller that are coupled to the common radiator. The electric power source loop comprises an electric power source coupled to the common radiator. When the brake resistor loop is determined to be in operation, the common radiator is utilized by the brake resistor loop to absorb heat generated by the brake resistor loop. When the brake resistor loop is determined to not be in operation, the common radiator is utilized by the electric power source to absorb heat generated by the electric power source loop.

Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell vehicle. The method may comprise heating a fuel cell coolant of a fuel cell coolant loop utilizing waste heat from a fuel cell to form a heated fuel cell coolant, heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and superheating the refrigerant of the battery refrigeration loop by exchanging heat with the heated fuel cell coolant.