Stator assembly with square wires shaped like Chinese character'tian 'and motor

Abstract

The invention belongs to the technical field of flat wire motors, and particularly relates to a stator assembly with a square wire shaped like a Chinese character'tian 'and a motor. 2 + n conductor layers are sequentially arranged in each stator slot along the radial direction of the stator core; wherein the two wire layers close to the outer side of the stator core are double-wire layers, and the other n wire layers are single-wire layers; n is an odd number greater than or equal to 1. According to the invention, a wire arrangement mode shaped like a Chinese character'tian 'is adopted, i.e., two wires are arranged in each of the two wire layers close to the outer side of the stator core, so that an overlarge width-to-width ratio of a single-groove wire is effectively avoided, the turning radius required during wire forming is reduced, and the height of the end part of the axial winding of the motor is reduced. On the basis of a wire arrangement mode shaped like a Chinese character'tian ', a specific winding connection path is arranged, it is ensured that all branches of the winding can achieve circuit balance, and it is ensured that the motor performance reaches the optimal state.

Description

technical field [0001] The invention belongs to the technical field of flat wire motors, and in particular relates to a stator assembly and a motor with square wires in the shape of a square. Background technique [0002] In order to improve the slot full rate of the motor, more and more motor solutions choose square wires as motor wires or flat wire motor solutions. In order to further improve the space utilization of the motor, a design with unequal slot widths is proposed. However, in the existing designs of unequal slot widths, there is a feature that the wires in the outer circular slot form an excessively large width-to-narrow ratio. It is difficult to form the wire with a large width-to-narrow ratio, and because the turning radius required for the wire to be twisted is large, the size of the end of the winding is too large and the advantage of space utilization is lost; in addition, the manufacturing cost of flat wire motor equipment is high, and each branch must be ...

AI Technical Summary

Problems solved by technology

However, in the existing design schemes of unequal slot width, there is a feature that the wires in the outer circular slot form an excessively large width-to-narrow ratio

It is difficult to form the wire with a large width-to-narrow ratio, and because the turning radius required for the wire to be twisted is large, the size of the end of the winding is too large and the advantage of space utilization is lost; in addition, the manufacturing cost of flat wire motor equipment is high, and each branch must be connected. Only by ensuring the balance of the circuit can its performance superiority be exerted, which puts forward higher requirements for the design of windings with unequal slot widths

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