Patent ID: 6472783
Filing Date: 2002-10-29
Classification: H02K,Y10S

Abstract:
A brushless, electronically-commuted motor, particularly as a drive motor for a motor-vehicle fan drive, having a permanent-magnetic outer rotor, in which a stator is disposed, the stator having three winding strands that are offset by 120Â° electrically from one another, with one half of a coil being wound per rotor pole and per strand, and with each winding strand comprising a plurality of winding coils, whose coil width is smaller than the rotor pole pitch, and which are inserted into winding grooves of the stator, and wherein: each winding strand comprises a plurality of parallel-connected winding coils; the outer rotor has at least p=3 pole pairs; and a circuit board having current bars is provided for connecting the individual winding coils with the circuit board having four current bars, with one current bar respectively being associated with each of the three winding strands for connecting the beginnings of the parallel-connected winding coils, and the fourth current bar serving to connect the star point to the ends of all of the winding coils of the three winding strands.