Flat wire motor stator and flat wire motor

Abstract

The invention provides a flat wire motor stator and a flat wire motor, and the flat wire motor stator is characterized in that a plurality of stator grooves are uniformly distributed in the circumferential direction of a stator core, a stator winding is provided with three phases of windings, and each phase of winding is provided with four branches which are connected in parallel; each phase of winding is correspondingly provided with an embedding groove, the embedding groove is a part of a stator groove, and the branch winding of each phase is embedded into all the embedding grooves corresponding to each phase; each branch winding is formed by connecting a plurality of coils in series, the coils of the same branch winding correspond to different cross winding areas, overlapping areas exist among the cross winding areas corresponding to different branch windings, the spans of the coils located in the overlapping areas are different, and the coils are sleeved with one another. In the invention, the branch windings cross over all layers and all slots of a single phase, different potential differences among layers, slots and poles are avoided, circumferential and radial phase balance among multiple branches is fully realized, and branch balance and no circulating current are still ensured even under the condition of rotor eccentricity.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular, to a stator of a flat wire motor and a flat wire motor. Background technique [0002] With the increase of flat wire motor models in the new energy market and the significant increase in the mass production of different models, the production efficiency and cost of flat wire motors have become the core of its development. At present, most of the domestic mass-produced flat wire motor stators have problems such as low automation, slow mass production rhythm, and high mold cost, which are mainly reflected in the large number of wires, the difficulty of connecting lead wires, and the complex jumpers. [0003] In the design of some stators, in order to reduce the winding type of the stator, the branches are used to balance each other, and the unbalance of the branches is ignored. In the case of different potentials between the two, it is impossible to achieve the branch balance...

AI Technical Summary

Problems solved by technology

At present, most domestic mass-produced flat-wire motor stators have problems such as low degree of automation, slow mass production, and expensive mold costs, mainly reflected in the large number of in-line types, difficult connection of lead wires, and complicated jumper wires.

[0003] In the design of some stators, in order to reduce the winding shape of the stator, the branch circuits are used to balance each other, and the imbalance of the branch circuits is ignored. When the structure is eccentric, the motor rotor structure is eccentric or other causes different poles. In the case of different potentials, the branch balance cannot be achieved, resulting in circulating current

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