Waste heat management system for electric vehicle

摘要

PURPOSE: A waste heat management system for electric vehicles is provided to reduce the power consumption of a heating system by using waste heat generated in all kinds of application components to an air conditioning system for vehicles. CONSTITUTION: A waste heat management system for electric vehicles comprises an electric water pump(2), a radiator(21), a heater core(22), cooling water lines(9a,9b,9c), a component temperature sensor, and a multi-control valve(10). The electric water pump forcibly pumps and circulates cooling water. The radiator discharges the heat of the cooling water. The heater core discharges and supplies the heat of the cooling water to air discharged into an internal side of a vehicle with an air conditioning blower(31). The cooling water lines are arranged to circulate the cooling water forcibly pumped by the electric water pump. The component temperature sensor detects the temperature of each appliance component. The opening and closing of the multi-control valve is controlled by a controller according to the detection signals of the component temperature sensor. [Reference numerals] (1) Cooling water tank(RSVR); (2) Electric water pump(EWP); (21) Radiator; (22) Heater core; (30) PTC heater; (4) Inverter; (5) Motor; (7) LDC; (8) Charger