Air-conditioning control method, device, system and air-conditioning controller

Abstract

The invention discloses an air conditioner control method, device and system and a controller. The air conditioner control method comprises the steps that the set temperature of an air conditioner is obtained, and the outdoor temperature, the indoor temperature, the sunlight illuminance and the surface temperature of an evaporator are acquired; the target temperature of an air outlet is determined according to the set temperature of the air conditioner, the indoor temperature, the outdoor temperature and the sunlight illuminance, and the target temperature of the evaporator is determined according to the target temperature of the air outlet; the current control voltage is determined according to the target temperature of the evaporator, the surface temperature of the evaporator, the target temperature, obtained in the previous acquisition cycle, of the evaporator, the surface temperature, obtained in the previous acquisition cycle, of the evaporator, and the output voltage obtained in the previous acquisition cycle; and the discharge rate of a compressor is controlled according to the current control voltage. According to the air conditioner control method, device and system and the controller, automatic control over the displacement of the compressor is achieved, the control accuracy of the surface temperature of the evaporator is improved, the opening and closing frequency of a clutch is reduced, and the energy utilization rate is increased.

Description

Technical field [0001] The present invention relates to the field of air conditioning control, and in particular to an air conditioning control method, an air conditioning control device, an air conditioning control system, and an air conditioning controller. Background technique [0002] With the continuous improvement of automobile technology, the society has higher and higher requirements for the comfort and energy saving of automobiles. At present, most cars on the market use fixed-displacement compressors, and fixed-displacement compressors have a fixed displacement so that the compressor can achieve maximum cooling capacity. When the surface temperature of the evaporator is very low, the air conditioner controller will let the EMS (Engine Management System) cut off the clutch between the engine and the compressor through the CAN (Controller Area Network) bus to stop the compressor. ; When the surface temperature of the evaporator rises back to a higher temperature, the clu...

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Problems solved by technology

[0004] On the one hand, when the clutch is engaged, the compressor always refrigerates with a fixed displacement, which will consume a large amount of engine torque and waste the energy of the whole vehicle; Vehicle noise, reduce vehicle NVH (Noise, Vibration, Harshness, noise, vibration and harshness) performance; and the evaporator surface temperature TE fluctuates in the range from T3 to T4, the air conditioner controller in order to reduce the temperature of the air outlet Fluctuation, adjust the air mixing damper according to the change of evaporator temperature, but the mixing air damper is mechanically controlled, and there is a large lag, which causes the temperature of the air outlet of the air conditioner to fluctuate within a certain range, making the human body feel unable to achieve sufficient comfortable

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