An integrated electric vehicle cooling system and control method

Abstract

An integrated cooling system and a control method for an electric vehicle are disclosed. The integrated cooling system comprises at least a radiator, a water pump, a motor and a fan, wherein the radiator comprises a core body, a water-feeding chamber and a water-draining chamber; the core body is arranged between the water-feeding chamber and the water-draining chamber and is respectively connected with the water-feeding chamber and the water-draining chamber; the water pump is integrated in the radiator to divide the radiator into a left side and a right side and two cooling circuits are formed at the left side and the right side of the radiator; a water pump inlet is arranged in the water-feeding chamber of the radiator and a water pump outlet is arranged in the water-draining chamber of the radiator; a motor output shaft of the motor is connected with the water pump; the fan is fixed to the outside of the radiator through a fan bracket; a fan rotation shaft and the motor output shaft are coaxially arranged; and a power-off combined type electromagnetic clutch is arranged between the fan rotation shaft and the motor output shaft. The integrated cooling system reduces the weight of a body of the electric vehicle and the space occupancy and simplifies the pipeline design. The control method achieves the intelligent adjustment for speed and operating and stop conditions of the water pump and the fan, and improves the work efficiency of the integrated cooling system.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and in particular relates to an integrated electric vehicle cooling system and a control method. Background technique [0002] Drive motors and motor controllers are the core components of electric vehicles. The drive motor is at high speed for a long time, and there are high-power electronic components in the motor controller, which generate serious heat. Therefore, the heat dissipation of the drive motor and motor controller is particularly important. The cooling system of electric vehicles can adopt water cooling and air cooling. But studies have shown that air cooling is not as effective overall, so water cooling is the best way to cool an electric vehicle's system. [0003] Traditional radiators cannot adjust the speed of the fan or water pump according to the temperature change of the drive motor and motor controller, but the speed of the electronic fan and electronic water pump can be ad...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an integrated electric vehicle cooling system and control method for the above-mentioned shortcomings of the existing electric vehicle cooling system with complex structure and insufficient cooling control. The cooling system reduces the weight of the electric vehicle body, reduces Occupies space, simplifies pipeline design; control method realizes intelligent adjustment of pump and fan speed and outage conditions, and improves cooling system efficiency

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