Stator assembly and motor

Abstract

The invention provides a stator winding and a motor. Three types of electrical connection relations exist between the flat wire conductors of each phase of winding, specifically, the electrical connection relation between two conductor layers of each winding layer, the electrical connection relation between two flat wire conductors in the same conductor layer and the electrical connection relationbetween flat wire conductors in different winding layers. Optimal configuration is carried out on the number of the three types of electrical connection relations of each phase of winding, and meanwhile, forward conductor paths and reverse conductor paths in each phase of winding are enabled to be connected in series in a staggered manner. According to the scheme, the voltage difference betweenadjacent conductors in stator slots can be effectively reduced, and the risk of turn-to-turn insulation failure of the winding is further reduced; moreover, since the voltage difference between the adjacent conductors in the stator slots is reduced, insulating slot liners arranged between the adjacent conductors in the same stator slot can be canceled.

Description

technical field [0001] The present invention relates to the field of motor technology, more specifically, to a stator assembly and a flat wire motor comprising the stator assembly Background technique [0002] The stator assembly of an electric motor, containing multiple windings inserted into the stator slots. At present, in order to improve the filling rate of windings in a single stator slot, flat copper wire windings are mostly used instead of round copper wire windings. Compared with the round copper wire winding motor, the flat copper wire winding motor has lower copper loss and higher efficiency; in addition, the multilayer flat copper wires inserted in each stator slot are in close contact, and the heat dissipation capacity of the motor is improved. Therefore, the flat wire motor has the advantages of high torque density and high power density. However, there is a voltage difference between the multi-layer flat copper wires inserted in the same stator slot. If the ...

AI Technical Summary

Problems solved by technology

However, there is a voltage difference between the multi-layer flat copper wires inserted in the same stator slot. If the insulation strength between the flat copper wires of each layer is not enough, the technical problem of inter-turn short circuit will easily occur, which will cause the flat wire motor to fail.

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