Planetary speed reduction electric driving device

The utility model discloses a planetary reduction electric driving device and relates to the technical field of power transmission. The device comprises a driving motor and a planetary reducer, the driving motor comprises a first shell, a stator arranged in the first shell and a rotor arranged in the stator; the planetary reducer comprises a second shell, a gear ring fixed in the second shell, a sun gear arranged in the gear ring, a plurality of planet gears arranged between the gear ring and the sun gear, and an output shaft connected with the planet gears; wherein a motor shaft of the rotor is connected with the sun gear, the planetary reduction electric driving device further comprises a first end cover and a second end cover, the first end cover is used for blocking an opening, opposite to the planetary reducer, of the first shell, and the second end cover is located between the first shell and the second shell; the opening, facing the planetary reducer, of the first shell and the opening, facing the driv