Air charging test device and method suitable for air compressor of multi-load pure electric bus

The invention relates to an air charging test device and method suitable for an air compressor of a multi-load pure electric bus. The device is composed of a measurement and control system, a power system and an air channel system. The measurement and control system comprises an upper computer, a PLC and expansion module, a frequency converter, a revolving speed sensor, a pressure transmitter anda relay. The power system comprises a driving motor, a measured air compressor, a driving motor end multi-wedge belt wheel, a multi-wedge belt, an air compressor end multi-wedge belt wheel, a T-shapedbase, an air compressor support and a driving motor support. One side of the air compressor end multi-wedge belt wheel is provided with the revolving speed sensor, and the driving motor is in transmission with the measured air compressor through the multi-wedge belt wheel. The air channel system comprises a gas distributor, an electromagnetic valve assembly, a gas storage tank assembly, a multi-channel electromagnetic val