The application discloses a testing method for a vehicle brushless blower, which comprises a controller, a brushless motor, an
impeller and a
volute. The input end of the controller is electrically connected with the output end of a power supply. The output end of the controller is electrically connected with the brushless motor. The
impeller and the
volute are installed inside an air conditioner box
HVAC. The testing method comprises the following steps: a dynamic
torque sensor and an
encoder are arranged on a transmission rod between the rotor of the brushless motor and the
impeller and the
volute; the brushless motor is started by the controller to drive the impeller to run; the output
voltage and current of the power supply and the three-phase instantaneous
voltage and current output by the controller are detected; the output torque of the brushless motor is detected by the dynamic
torque sensor, and the rotating speed of the brushless motor is detected by the
encoder; the output
air volume of the air conditioner box
HVAC under a specific static pressure after the impeller is installed inside the air conditioner box
HVAC is detected; and the controller efficiency, the brushless
motor efficiency, the impeller efficiency and the
assembly efficiency of the air conditioner box HVAC
system are calculated according to the above test results.