The invention discloses a range
extender bench test anti-reverse protection and rotating
speed measurement device and a use method thereof, and belongs to the technical field of range extenders. When the range
extender operates in the forward direction, a forward rotation speed
signal of the range
extender is output to a first frequency measurement channel of a test
bed from Forword-out of the measurement module through
internal logic judgment of a direction judgment integrated block U2 in the measurement module, and the rotation
speed measurement and acquisition functions of the range extender are achieved. When the range extender reversely operates, a reverse rotation speed
signal of the range extender is output to a frequency measurement channel II of the test
bed from Reverse-out of the measurement module through
internal logic judgment of a direction judgment integrated block U2 in the measurement module; and when it is detected that the range extender begins to rotate reversely and the rotating speed is still low, sudden stop protection of a test
bed is started immediately, ignition power, a
control power source of a GCU and
fuel supply of an engine are
cut off, the range extender is forced to stop running, and the reverse rotation protection function of the range extender is achieved. According to the invention, anti-reverse protection of the
bench test of the range extender and rotation
speed measurement and acquisition functions of the range extender in the
bench test are realized.