Flat wire motor stator and flat wire motor

Abstract

The embodiment of the invention provides a flat wire motor stator and a flat wire motor. According to the invention, element simplification is realized, the elements are reduced to one type, the production, assembly and welding are easy, tools and molds are simple, and the cost is greatly reduced; the wire outlet end, the welding end, a neutral line bus bar and a transition bus bar are arranged onthe same side of the motor, the axial length of the motor is reduced to the maximum extent, the size is reduced, and the motor and a driving system are lightened; through the design of a double-star-shaped connection structure of the winding, the phase difference between two adjacent grooves of the input end and the output end of each phase is an electrical angle of 30 degrees, and six-order torque pulsation is reduced; and the notch adopts a chamfer design, so that the harmonic waveform is improved, and the NVH performance is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of motors, in particular to a flat wire motor stator and a flat wire motor. Background technique [0002] The drive motor is mainly composed of stator components, rotor components, end covers and auxiliary standard parts, and the stator windings include iron cores, copper wire windings, insulating materials, etc. As the name suggests, the flat wire motor uses flat copper wire in the stator winding. First, the winding is made into a hairpin-like shape, penetrated into the stator slot, and then the end of the hairpin is welded at the other end. [0003] The difference between flat wire motors and round wire motors lies in the forming method of copper wires. Flat wires are conducive to the improvement of motor slot fill rate. Generally, the slot fill rate of round wire motors is about 40%, while the slot fill rate of flat wire motors can reach More than 60%. The improvement of the sl...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a flat wire motor stator and a flat wire motor, which are used to solve the problem of the wide variety of flat wire motor winding components in the prior art, resulting in difficulties in production and assembly, increased cost of tooling and molds, and separation of the outlet end and the welding end. Both sides of the motor lead to an increase in the axial length of the motor, which is not conducive to the lightweight of the electric drive system, and there is also the problem of poor NVH performance of the motor

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