Flat wire motor stator

Abstract

The invention discloses a flat wire motor stator. The flat wire motor stator comprises a stator winding and a stator core, wherein the stator winding comprises a plurality of overlapping and winding wire units, and each overlapping and winding wire unit is formed by winding one flat wire conductor and is provided with two outgoing lines; the overlapping and winding wire units are sequentially arranged into a circle, the outgoing lines are sequentially welded according to the wiring mode of the winding after being bent, and an overlapping and winding wire unit combination is formed; and the stator core comprises a plurality of stator core blocks which are sequentially inserted into the stator winding. According to the forming method of the flat wire motor stator, the overlapping and windingwire units are produced through an extrusion forming process, then the plurality of overlapping and winding wire units arranged in a circle are synchronously rotated to form the whole stator winding,finally the plurality of stator core blocks are inserted into the whole stator winding, and therefore the flat wire motor stator is formed; and production efficiency is high, winding design has goodflexibility, the method has better adaptability to winding wire dimensions, and a bulging extrusion process prone to causing secondary damage to winding wires can be omitted.

Description

technical field [0001] The invention relates to a motor stator, in particular to a flat wire motor stator. Background technique [0002] Flat wire motors are becoming more and more common in new energy vehicle drive motors or generators, and the motor stator winding structure and its manufacturing methods are diverse. Patent Document 1 (publication number: US8384263 B2) describes a method for forming stator windings by winding, bulging extrusion and welding of several laminated wire units. The winding process has a certain limit on the size of the wire, and the smaller the size, the better the winding forming. The lapped wire unit in Patent Document 1 (publication number: US8384263 B2) is composed of a plurality of coils, the size is relatively large, and it is difficult to form the winding. Moreover, after the winding is wound and formed, it will be bulged and put into the stator core slot, which will cause secondary deformation to the winding and easily cause damage to t...

AI Technical Summary

Problems solved by technology

The lapped wire unit in Patent Document 1 (publication number: US8384263 B2) is composed of multiple coils, the size is relatively large, and it is difficult to form the winding

Moreover, after the winding is wound and formed, it will be bulged and put into the stator core slot, which will cause secondary deformation to the winding and easily cause damage to the winding wire.

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