Air conditioning system and control method for electric work machine

Abstract

The invention provides an air conditioning system of an electric working machine and a control method. The system comprises an indoor air conditioning assembly arranged in a cab; the condenser is electrically connected with the indoor air conditioner assembly, and a refrigerant loop is formed between the condenser and the indoor air conditioner assembly. The electric compressor is electrically connected with the condenser so as to provide power for the refrigerant loop; the pressure detector is electrically connected with the refrigerant loop so as to detect refrigerant parameters of the refrigerant loop; the controller is electrically connected with the indoor air conditioner assembly, the condenser, the electric compressor and the pressure detector. The controller adjusts the working mode of the indoor air conditioner assembly according to the environment parameters and the refrigerant parameters. According to the air conditioner, a power source of refrigerant circulation is arranged to be of an integrated structure from the compressor and the motor, so that the refrigerant circulation amount does not depend on the rotating speed of the engine any more, and the problem that deviation exists between the refrigerant circulation amount needed by the air conditioner and the refrigerant circulation amount capable of being provided by the compressor is solved.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to an air conditioning system and a control method of an electric working machine. Background technique [0002] The adjustment of the cab environment of the existing work machine is powered by the engine. This setting has the defect that the amount of refrigerant circulation that can actually be provided depends on the speed of the engine, resulting in the amount of refrigerant circulation required by the air conditioner and the refrigerant circulation that the compressor can provide. There is a discrepancy between the quantities. SUMMARY OF THE INVENTION [0003] The invention provides an air-conditioning system for an electric working machine, which is used to solve the defect that the existing construction machinery air-conditioning is powered by an engine, so that there is a deviation between the refrigerant circulation volume required by the air-conditioning d...

AI Technical Summary

Problems solved by technology

[0003] The invention provides an air-conditioning system for an electric working machine, which is used to solve the defect that the existing construction machinery air-conditioner provides power through the engine, so that there is a deviation between the refrigerant circulation required by the air-conditioning device and the refrigerant circulation that can be provided by the compressor , by combining the compressor with the motor, the amount of refrigerant circulation no longer depends on the engine speed, avoiding the problem of deviation between the amount of refrigerant circulation required by the air conditioner and the amount of refrigerant circulation that the compressor can provide

[0004] The present invention also provides a control method for an air-conditioning system of an electric working machine, which is used to solve the gap between the amount of refrigerant circulation required by the air-conditioning device and the amount of refrigerant circulation that can be provided by the compressor through the power provided by the engine for the existing engineering machinery air conditioner. There is a defect of deviation. By judging according to the power of the power battery, the demand for a comfortable environment in the cab is guaranteed on the premise that the electric compressor is used to meet the working machinery.

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