Vehicle-mounted main drive battery box airtightness detecting equipment

The invention discloses vehicle-mounted main drive battery box airtightness detecting equipment. The equipment comprises a vehicle network interconnection terminal TBOX, a vehicle controller VCU, a blast pump, a drying bottle, a pressure sensor, a two-way electromagnetic valve, a main drive battery box and a relay, the vehicle network interconnection terminal TBOX is bi-directionally communicatedwith the vehicle controller VCU through a CAN communication line, and the vehicle controller VCU is unidirectionally communicated with the two-way electromagnetic valve at an I/O signal through a communication line; the pressure sensor is unidirectionally communicated with the vehicle controller VCU at an analog quantity signal through a communication line, the vehicle controller VCU controls therelay at the I/O signal through a communication line, and the relay is communicated with the blast pump through a cable; the blast pump is unidirectionally communicated with the drying bottle througha through pipeline, the pre