Stator assembly and motor

Abstract

In the stator winding and the motor provided by the present invention, there are three types of electrical connection relationships between the flat wire conductors of each phase winding, specifically: the electrical connection relationship between the two conductor layers of each winding layer, the electrical connection relationship in the same conductor layer The electrical connection relationship between two flat wire conductors and the electrical connection relationship between flat wire conductors in different winding layers. The quantity of the three types of electrical connection relations of each phase winding is optimally configured, and at the same time, the forward conductor path and the reverse conductor path in each phase winding are interleaved and connected in series. Through the above scheme, the voltage difference between adjacent conductors in the stator slot can be effectively reduced, thereby reducing the risk of winding inter-turn insulation failure; and, since the voltage difference between adjacent conductors in the stator slot is reduced, it can be The insulating slot liner provided between adjacent conductors in the same stator slot is eliminated.

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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