Fecha de publicación: 29/10/2021 Fuente: Wipo "digitalization" The utility model discloses a brushless motor heat radiation structure using rotation of an outer rotor to form a forced air channel, which comprises a motor shell, a motor base, the outer rotor and a stator, and is characterized in that the motor shell is provided with a plurality of notches, and at least part of the notches are simultaneously provided with mounting screw holes and air inlets; an air outlet is formed between the motor shell and the motor base; the air channel is formed by a motor shell air inlet, a gap between the motor shell and the outer rotor, a gap between the outer rotor and the stator and an air outlet formed by the motor shell and the motor base in sequence. When the outer rotor rotates, cold air continuously enters the motor and is discharged from the air outlet after being heated, heat in the brushless motor is brought out of the motor, and the purposes of heat dissipation and cooling are achieved.