New energy vehicle control unit signal testing device

The utility model discloses a signal testing device for a vehicle control unit of a new energy automobile, and belongs to the technical field of electric automobile detection. The testing device comprises a switching power supply for supplying power to the testing device, a vehicle control unit to be tested, an LED lamp for detecting a digital output signal and a PWM output signal of the vehicle control unit to be tested, a switching device, a digital quantity input device, an analog quantity input device and an upper computer, the switching power supply is electrically connected with the LED lamp, the digital quantity input device and the to-be-tested controller, the switching device is electrically connected with the output end of the to-be-tested controller, the LED lamp and the input end of the to-be-tested controller, the analog quantity input device is electrically connected with the 5V output end of the to-be-tested controller, and the to-be-tested controller is in communication connection with the upp