Power takeoff electric gear shifting device and system

The invention relates to the technical field of power takeoff electric gear shifting, in particular to a power takeoff electric gear shifting device and system.The power takeoff electric gear shifting device and system can control a motor of a power takeoff system on the basis of an instruction transmitted by an automatic gearbox of a new energy vehicle, a vehicle control unit is used for collecting information such as the gear shifting intention of a driver, and the gear shifting intention of the driver is obtained through corresponding calculation. Therefore, the corresponding gear of the vehicle is accurately judged, and automatic gear shifting of the vehicle is achieved. According to the structure, self-locking can be achieved, after gear shifting is completed, the motor stops outputting torque, the power takeoff is kept at the existing position, and it is guaranteed that the gear is unchanged. The problems that most power takeoff devices are controlled through air pressure and hydraulic pressure, and at