Control device and method for air compressor and dryer of new-energy commercial vehicle

Abstract

The invention discloses control device and method for an air compressor and a dryer of a new-energy commercial vehicle. The method comprises the steps of 1, electrifying the finished vehicle at high voltage, and supplying power to the dryer (10) and a condenser control valve (5) through an instrument and vehicle body control module (9); 2, acquiring air pressure values of a front barrel air pressure sensor (1), a rear barrel air pressure sensor (2) and a wet barrel air pressure sensor (3) through the instrument and vehicle body control module, and when min(P1 or P2 or P3) is smaller than 0.7 Mpa, outputting an inflation demand through the instrument and vehicle body control module; 3, controlling the air compressor (7) to work through a high-pressure accessory controller (6); 4, when max(P1 or P2 or P3) is larger than 1 Mpa, outputting an inflation stopping demand; and 5, controlling the air compressor to stop working through the high-pressure accessory controller, and supplying powerto an exhaust electromagnetic valve (4) through the instrument and vehicle body control module. The control device and method for the air compressor and the dryer of the new-energy commercial vehiclean realize the integral control on the functions such as dryer control, signal acquisition, fault diagnosis and function safety so as to conveniently adapt to the operation of the finished vehicle under the working condition.

Description

technical field [0001] The invention relates to a new energy (EV) commercial vehicle high-voltage accessory system and a control method thereof, in particular to a control device and method for a new energy commercial vehicle air compressor and dryer. Background technique [0002] At present, most of the control system solutions for air compressors and dryers of new energy (EV) commercial vehicles adopt discrete control solutions. It is executed by different systems, there is less interactive information between the systems, the fault handling mechanism is different, and the configuration parameters of different functions are different on different types of vehicles. The control can only be based on the different air compressors and dryers of the whole vehicle. According to the status of the device, individual configuration is performed, resulting in a wide variety of air compressor and dryer control systems that realize the above functions, and do not have self-diagnosis an...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the control system solutions for air compressors and dryers of new energy (EV) commercial vehicles adopt discrete control solutions. It is executed by different systems, there is less interactive information between the systems, the fault handling mechanism is different, and the configuration parameters of different functions are different on different types of vehicles. The control can only be based on the different air compressors and dryers of the whole vehicle. According to the status of the device, individual configuration is performed, resulting in a wide variety of air compressor and dryer control systems that realize the above functions, and do not have self-diagnosis and fault handling functions. Once a fault occurs, the fault code cannot be recorded and reported, and it cannot be timely. Fault adjustment work strategy; the high-voltage electrical control architecture of the whole vehicle cannot be unified, and cannot meet the requirements of a wide variety of new energy commercial vehicles, many batches, small batches, and short development cycles

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