Stator of flat wire motor, and flat wire motor

Abstract

The invention discloses a stator of a flat wire motor, and a flat wire motor. The stator comprises a stator core and a stator winding, wherein each phase stator winding comprises N parallel branches; the star point connecting ends of all the parallel branches are led out from different winding grooves at a connecting side, and all the star point connecting ends, connected with a first star point connecting line and a second star point connecting line, in the three phase windings are led out from the winding grooves adjacent to the connecting side; the power supply leading-out ends of the same phase winding are led out from the same and / or adjacent winding grooves at the connection side and are electrically connected through power supply leading-out wires; and thus, the star point connecting ends and the power supply leading-out ends are distributed in a concentrated mode, a connecting side end winding structure is simplified, and the welding production difficulty of winding coils is lowered. In addition, the winding grooves for leading out the point connecting ends electrically connected with the first star point connecting line and the second star point connecting line are symmetrically distributed on the two opposite sides of the winding grooves for leading out the power supply leading-out ends, and the winding grooves for leading out the star point connecting ends are adjacent to the winding grooves for leading out the power supply leading-out ends, so ring current between branches is reduced.

Description

technical field [0001] The embodiments of the present invention relate to motor technology, and in particular to a flat wire motor stator and a flat wire motor. Background technique [0002] With the rapid development of new energy vehicle technology, the performance requirements for vehicle drive motors are getting higher and higher. The increase in performance will inevitably lead to an increase in the volume of the drive motor. However, the axial space size of new energy vehicles is very limited, resulting in the drive motor. The contradiction between performance and volume is becoming increasingly prominent. [0003] At present, the driving motors of new energy vehicles are mainly permanent magnet synchronous motors. In permanent magnet synchronous motors, the motor stator can be divided into round wires and flat copper wires according to the cross-sectional shape of the stator winding. Motors using flat copper wires are called Flat wire motor. At present, most permane...

AI Technical Summary

Problems solved by technology

[0004] The flat-wire motor windings with multi-parallel branches used in the prior art have many types of wires, complicated arrangement, and unconcentrated lead wires. A large number of bus bars and bus bars are needed to connect the branches of each phase winding and Neutral point, complex manufacturing process, high production cost, low processing efficiency

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