Electric vehicle cooling system and control method thereof

Abstract

The invention provides an electric vehicle cooling system comprising a DC-to-DC power supply cooling water jacket, a motor controller cooling water jacket, a driving motor cooling water jacket, a radiator, an electric water pump and a controller with an alarm lamp which are sequentially communicated; and the cooling system is characterized in that a driving motor and a driving motor controller are provided with temperature sensors, cooling liquid temperature sensors are arranged between the radiator and the electric water pump and between the driving motor and the radiator, the water outlet of the electric water pump is provided with a flow sensor, an electric fan is arranged in the radiator, and the temperature sensors, the cooling liquid temperature sensors and the electric fan are connected with the controllers. The invention can ensure the cooling effect of the electric vehicle to key parts of the vehicle under various working conditions so as to improve the heat efficiency of the key parts, reduce the heat loss, effectively save electric energy and prolong the continuous mileage of the electric vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle cooling system and a control method thereof. Background technique [0002] Existing electric vehicles do not adopt water-cooling methods for cooling key components such as drive motor controllers, but adopt air-cooling methods, which is difficult to ensure the cooling effect. In the cooling system cycle of some electric vehicles, in terms of control methods, as long as the car key is turned to the "on" position, the electric water pump will run, so if the motor is not running or the ambient temperature is not too high , the cooling water still circulates, which has little effect, wastes electric energy, and reduces the continuous driving mileage of electric vehicles. Contents of the invention [0003] The technical problem to be solved by the invention lies in an electric vehicle cooling system and a control method thereof which have good cooling ...

AI Technical Summary

Problems solved by technology

[0002] Existing electric vehicles do not use water cooling to cool key components such as drive motor controllers, but air cooling, which is difficult to guarantee the cooling effect

In the cooling system cycle of some electric vehicles, in terms of control methods, as long as the car key is turned to the "on" position, the electric water pump will run, so if the motor is not running or the ambient temperature is not too high , the cooling water is still circulating, which has little effect, wastes electric energy, and reduces the continuous driving mileage of electric vehicles

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