Patent ID: 8587177
Filing Date: 2013-11-19
Classification: H02K,Y10T

Abstract:
1. A stator comprising: a stator core having a plurality of slots; and a multi-phase coil of a distributed type provided in the stator core, the multi-phase coil including a plurality of unit coils, each unit coil being made of a flat conductor wire wound in plural turns, and the unit coils being mounted in the slots of the stator core, wherein each unit coil includes a plurality of concentrically wound layer coils, each layer coil being made of a single continuous flat conductor wire, the layer coils of each unit coil include an outermost layer coil and an innermost layer coil, and a winding start portion or a winding end portion of the outermost layer coil and a winding end portion or a winding start portion of the innermost layer coil form a first connection end portion and a second connection end portion of the unit coil, the first connection end portion and the second connection end portion are located separately at two edges of the unit coil in an axial direction thereof, and of the unit coils, the first connection end portions of adjacent unit coils constituting the same phase are connected with each other and the second connection end portions of the adjacent unit coils constituting the same phase are connected with each other.