Same-slot-layer multi-wire stator assembly and flat wire motor

Abstract

The invention belongs to the technical field of flat wire motors, and particularly relates to a same-slot-layer multi-wire stator assembly and a flat wire motor. The stator assembly comprises a stator core and a stator winding. The stator iron core is roughly in a cylindrical shape; the stator core is provided with a plurality of stator grooves, and each stator groove is internally provided with a plurality of combined conductor layer groups. Compared with the prior art, the stator assembly provided by the invention has the advantages that the length-width ratio of each rectangular conductor is reduced under the condition of ensuring that the total sectional areas of the conductors in the stator grooves are similar, so that U-shaped wire forming is facilitated, and the manufacturability is better; and meanwhile, the length and width of each rectangular conductor in the stator slots are adjusted, the stator slot types are adjusted, the stator tooth parts are utilized, the radial distance of the stator slots is adjusted, the inner diameter of the stator is adjusted, and the stator yoke parts are adjusted, so that the flux density distribution of each part of the stator assembly is reasonable, the slot fullness rate is improved, and the working efficiency of the motor is improved.

Description

technical field [0001] The invention belongs to the technical field of flat wire motors, in particular to a stator assembly with multiple wires in the same slot layer and a flat wire motor. Background technique [0002] Flat wire motor is a new type of winding method mainly researched by major motor manufacturers and developers. As the speed of flat wire motors is getting higher and higher, the number of layers in the stator slots of flat wire motors is increasing, and the aspect ratio of rectangular conductors is getting larger and larger, which makes it difficult to form conductors, turn heads, poor manufacturability, and slot utilization. Low, reducing the efficiency of the motor. [0003] Such as figure 1 and 2 As shown in the figure, it is a commonly used winding method for existing flat wire motors, and the aspect ratio of the rectangular conductor used is too large. When the aspect ratio is greater than 3.5, when the end of the rectangular conductor is twisted and...

AI Technical Summary

Problems solved by technology

Therefore, the existing flat wire motors have problems such as large bending radius of the stator winding, difficulty in forming the crown end, and poor manufacturability.

[0004] Additionally, if image 3 As shown, it is a partial cross-sectional view of the existing flat wire motor stator assembly. Several layers of equal-sized rectangular conductors are arranged in sequence in each stator slot. The slot utilization rate cannot be maximized, and the slot fill rate is 71.7% (pure copper).

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