Electric Motor Having A Polygon Stator

摘要

An electric motor has a polygon stator core. The polygon stator core includes yoke portions and teeth extending inwardly from the yoke portions. A winding slot is formed between adjacent teeth. Adjacent yoke portions are interconnected by a connecting portion. The winding slots include first winding slots and second winding slots of different shapes. The ratio of the area of a first winding slot to the area of a second winding slot is greater than or equal to 0.9 but less than or equal to 1.1. By changing the shape of the stator core, the size of the winding slots may be increased without increasing the radial dimension of the motor.

主权项

1. An electric motor comprising a stator having a polygon stator core and a rotor rotatable relative to the stator and having a plurality of magnetic poles,
wherein the polygon stator core comprises: a plurality of yoke portions and connecting portions interconnecting adjacent yoke portions to form a polygon; a plurality of teeth extending inwardly from the yoke portions, winding slots respectively formed between adjacent teeth, the winding slots comprising a plurality of first winding slots and a plurality of second winding slots, the first winding slots and the second winding slots have different shapes, and the ratio of the area of one of the first winding slots to the area of one of the second winding slots is greater than or equal to 0.9 but less than or equal to 1.1.