Electric compressor system for electric vehicle and control method thereof

Abstract

The invention discloses an electric compressor system for an electric automobile and a control method of the electric compressor system. The electric compressor system comprises the following steps: (1) starting an automobile air conditioner when an automobile is stationary, and after a storage battery is boosted, outputting the power to a compressor controller to drive the compressor to work; starting the automobile air conditioner when the automobile is started and entering the step (2); (2) driving a motor to work by a power battery until the automobile air conditioner is turned off, and returning to the step (1); after a vehicle wheel braking signal is collected by a brake signal collecting end, entering the step (3); (3) if the output forwarding of the motor is higher than a first rotating speed and a first clutch and a second clutch are in a linkage state, entering the step (4); if the output forwarding of the motor is lower than a first rotating speed, returning to the step (2); and (4) controlling the operation state of the compressor by regulating the output rotating speed of a transmission case by the compressor until the vehicle wheel braking signal is eliminated or the automobile air conditioner is turned off. According to the electric compressor system, the technical problem that the endurance mileage of the electric automobile is decreased due to excess consumption of the compressor of the air conditioner is solved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle air conditioner compressor control, and more specifically, the invention relates to an electric compressor system for an electric vehicle and a control method thereof. Background technique [0002] With the development of electric vehicle technology, the trend of electric vehicle industrialization is becoming more and more obvious, which brings new propositions and challenges to the research and development of electric vehicle air conditioning system. At present, the traditional fuel car air conditioning system mainly uses the engine-driven evaporative compression refrigeration system to cool down. When the car engine is turned off, because the car engine does not rotate, it cannot drive the car air conditioner compressor. At this time, the car air conditioner cannot be used. On the other hand, although the car is parked, the car engine is not turned off. At this time, although the car ai...

AI Technical Summary

Problems solved by technology

[0005] Another object of the present invention is to provide an electric compressor system for an electric vehicle and its control method. When the vehicle is stationary, the battery is boosted to drive the compressor, which increases the heating power consumption of the battery and improves the battery life. After the car is started, the power battery is used to drive the compressor. When the car is braking, the inertial rotation of the car's drive motor is used to drive the compressor. On the premise of ensuring the normal operation of the compressor, the consumption of the power battery is reduced, and the problem is solved. Solve the technical problem of reducing the mileage of electric vehicles due to excessive consumption of air-conditioning compressors

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