| abstract |
To reduce the size of a motor and an inverter power source used in an electric vehicle while obtaining torque and output equivalent to those of a conventional one. SOLUTION: Through a refrigerant circulation path 6 for circulating a cooling medium to electric drive means 1 and 2 for electrically driving a vehicle, a heat exchange means 3 for exchanging heat between the cooling medium and outside air, and a refrigerant circulation path 6. The refrigerant circulation means 5 that circulates the cooling medium between the heat exchange means 3 and the electric drive means 1 and 2, the blower means 4 that blows air to the heat exchange means 3, the refrigerant circulation means 5 and the blower means 4 are controlled. Control means 23 for controlling the cooling of the electric drive means 1, 2, and when the driving force of the vehicle by the electric drive means 1, 2 is in the first operation region by the control means 23, When the means 4 is controlled in the first cooling mode and the driving force of the vehicle by the electric drive means 1 and 2 is in the second operating region higher than the first operating region, the refrigerant circulating means 5 and the air blowing means 4 are In the second cooling mode, which has a higher cooling capacity than the one cooling mode To your. [Selection] Figure 1 |