Compared to a radial gap type brushless motor, the stator of which is provided on the outer peripheral side, the axial gap type brushless motor is a motor with which larger torque can be obtained with a smaller diameter. Thus, the axial gap type brushless motor is desired for application in automobiles and the like.
Such an axial gap type brushless motor is disclosed, for example, in Patent Literature 1. A DC brushless motor disclosed in Patent Literature 1 uses a band-like material for wires of stator coils. The coils are each formed of a wire which is spirally wound such that the width direction of the wire is parallel to the axial direction. The plurality of coils are stacked one on top of the other in the axial direction and connected in parallel to a power source.
In such an axial gap type brushless motor, although it is desired that losses such as an eddy current loss and a hysteresis loss be reduced, the losses are not sufficiently reduced with the above-described related-art DC brushless motor.