The invention discloses a brushless
DC motor, which comprises a casing and a driving shaft arranged inside the casing, wherein the surface of the driving shaft is provided with a rotor, the outer sideof the rotor is provided with a permanent
magnet, the outer side of the permanent
magnet is provided with a three-phase
stator, the outer side of the three-phase
stator is provided with a sound insulation plate, the outer side of the sound insulation plate is coated with a
graphene coating, and the
graphene coating is bonded and connected with a sound absorbing strip at the side away from the sound insulation plate. The brushless
DC motor solves the problems that the
noise produced in operation affects the outside world and the generated heat damages the motor itself due to the deficiencies on the aspects of
noise control and heat dissipation of the brushless
DC motor at present through setting the sound insulation plate, the
graphene coating, the sound absorbing strip, a heat conductingfilm, a foamed aluminum plate, a
heat conducting gasket,
noise reduction pipes, sliding rods, arc-shaped plates, compression springs, a Hall sensor, an external cover and a fan. The brushless DC motorhas the advantages of
noise reduction and good heat dissipation effect.