Control device for electric compressor, and shutdown control method thereof
A technology for electric compressors and control devices, applied in pump control, machines/engines, mechanical equipment, etc., can solve problems such as air-conditioning system life impact, air-conditioning system failure, air-conditioning system pressure rise, etc., to avoid entering high-pressure working state, Protects against high-voltage shocks and prolongs service life
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[0018] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.
[0019] In a preferred embodiment, the control strategy includes two aspects, one is the judgment of the shutdown time, and the other is the control of the time spent in the compressor shutdown process. When the compressor controller detects that the vehicle is powered off abnormally or detects a communication failure, it is determined that it needs to be shut down.
[0020] 1. The vehicle is abnormally powered off (when the air conditioner is working, the vehicle key is directly turned to the OFF position), the power supply design scheme of the compressor controller is as follows: figure 1 :
[0021] 1. The low-voltage side on the left is the IGN power, which is converted to a lower voltage by the power conversion chip and then supplies power to the CAN communication chip and the MCU ch...
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