Drive unit for electric vehicle

A drive unit for an electric vehicle, comprising:

• a motor;
• an inverter electrically connected to the motor, the inverter supplying alternating current electric power to the motor;
• a speed reducer connected to the motor, the speed reducer reducing a revolution speed of a mechanical output of the motor;
• and
• a cooling system comprising
• a first refrigerant passage in contact with at least one of the motor and the inverter,
• a second refrigerant passage in contact with at least one of the motor and the speed reducer,
• a heat exchanger connected to the first refrigerant passage and the second refrigerant passage,
• a radiating section connected to the first refrigerant passage and the heat exchanger, the radiating section radiating heat into the atmosphere,
• first refrigerant circulating the first refrigerant passage, the heat exchanger and the radiating section, first refrigerant receiving heat at the first refrigerant passage and the heat exchanger and radiating the heat at the radiating section,
• second refrigerant circulating the second refrigerant passage and the heat exchanger, the second refrigerant receiving heat at the second refrigerant passage and radiating the heat at the heat exchanger.