Dual-clutch automatic transmission of electric vehicle

The utility model provides a dual-clutch automatic transmission of an electric vehicle, which comprises a double clutch, a low-speed gear set, a high-speed gear set and a power output shaft, wherein the power of a motor of the electric vehicle is transmitted to the low-speed gear set or the high-speed gear set through the double clutch and output through the power output shaft; the dual-clutch automatic transmission of the electric vehicle further comprises a tortional vibration damper and an electric actuating mechanism; the tortional vibration damper is installed on a driven disc of the double clutch; and the output terminal of the electric actuating mechanism is connected with a release bearing of the double clutch. In the dual-clutch automatic transmission of the electric vehicle, the resonance phenomenon in the transmission system can be effectively avoided through the tortional vibration damper, the common operating range of the motor is transferred out during the resonance, and the impact on the motor is cushioned; and meanwhile, the torsional vibration phenomenon can be reduced and even eliminated, so that the motor is protected.