Flat wire motor, flat wire motor stator and winding method thereof

Abstract

The invention relates to the technical field of stator windings, in particular to a flat wire motor, a flat wire motor stator and a winding method thereof. The flat wire motor stator comprises 48 stator slots, wherein 2n layers of flat wire conductors are arranged in each stator slot, the 2n layers of flat wire conductors are defined as a first layer of flat wire conductor, a second layer of flat wire conductor to a 2n layer of flat wire conductor from inside to outside in the radial direction of the stator, every two adjacent layers of flat wire conductors belong to the same winding layer, the number of the winding layers is n, a first branch circuit is formed by bridging 15 times in a first preset direction according to a first bridging rule by taking the first layer of flat wire conductor as a starting position, wiring of the first winding layer is completed, wiring of the nth winding layer is completed in the same manner, a second branchcircuit is formed by bridging 15 times in a second preset direction according to a second bridging rule by taking the 2nth layer of flat wire conductor as a starting position, wiring of the nth winding layer is completed, and wiring of the first winding layer is completed in the same manner. By means of the winding mode, short-distance wiring can be formed, harmonic waves are reduced, and circulating current between parallel branches is avoided.

Description

technical field [0001] The invention relates to the technical field of stator windings, in particular to a flat wire motor, a flat wire motor stator and a winding method thereof. Background technique [0002] The difference between the flat copper wire motor and the round wire motor lies in the way the copper wire is formed. The flat wire is conducive to the improvement of the slot fill rate of the motor. Generally, the slot fill rate of the round wire motor is about 40%, while the slot fill rate of the flat copper wire motor Can reach more than 60%. The improvement of the slot full rate means that more copper wires can be filled under the premise of the same space, resulting in stronger magnetic field strength and higher power density. [0003] As low-carbon, energy-saving, and emission reduction become the core competitiveness of automobiles, new energy electric vehicles continue to vigorously develop, and the power density of electric vehicle drive motors is also getting...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the imbalance between the winding branches and the circulation between the branches in the above-mentioned prior art, short-distance wiring cannot be used to make the magnetic field contain a large number of harmonics when the motor is running, the invention provides a flat wire motor, a flat wire The stator of the motor and its winding method can realize the parallel connection of double branches and form a short-distance winding arrangement, which can effectively reduce the harmonics when the motor is running, and the parallel double branches in each phase are evenly distributed to avoid the interference between parallel branches. Circulating current to ensure stable current

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