Method and device for evaluating heat dissipation performance of cooling system

The invention provides a heat dissipation performance evaluation method and device of a cooling system, and relates to the technical field of automobile design. The heat dissipation performance evaluation method of the cooling system comprises the steps that according to operation condition setting information of a vehicle, the rotating speed and the torque of a motor in a motor system on the vehicle are calculated; a three-dimensional simulation technology is utilized to determine the corresponding relation between the air inlet amount of a radiator in a cooling system corresponding to the motor system and the rotating speed of a fan and the cooling liquid flow of a pipeline in the cooling system; determining the temperature of at least one part in a motor system by utilizing a one-dimensional simulation technology according to the rotating speed and the torque of a motor in the motor system on the vehicle, the corresponding relation between the air inlet amount of the radiator and the rotating speed of a fa