Patent ID: 7719148
Filing Date: 2010-05-18
Classification: B60L,H02K,Y02T

Abstract:
1. A motor stator structure, comprising: a stator including a plurality of coils, each coil including a wire wound around a periphery of an iron core, said coils being annularly arranged about an axis of the stator, first ends of the wires of the coils being connected to each other by connecting terminals; a neutral-point bus ring formed of a bent wire material, having a generally annular shape and being arranged along an inner peripheral portion of the stator, said neutral-point bus including: (a) a plurality of larger-diameter portions and a plurality of smaller-diameter portions which alternately extend circumferentially, said smaller-diameter portions being disposed radially interior to said large-diameter portions, and (b) a plurality of link portions which extend radially, connecting the larger-diameter portions and the smaller-diameter portions to each other, wherein each of the first ends of the wound wire is positioned between adjacent two link portions which extend radially, and wherein a first end of each of said connecting terminals is connected to the first end of the wound wire, and a second end of each of said connecting terminals is connected to one of said link portions.