Stator, electric machine and vehicle

Abstract

The application provides a kind of stator, motor and vehicle, the stator includes stator core and three-phase stator winding, the inner wall of stator core is evenly distributed with Z stator slots along the circumference;Any one winding includes a parallel branch, a is 1 or 2, and when a is 2, 2 parallel branches are rotationally symmetrical in the circumferential direction of stator core;Any one parallel branch contains multiple different span hairpin coils, hairpin coils only contain Z / P and (Z / P+1) two spans, and hairpin coils with span (Z / P+1) are only located in the outermost or innermost layer of stator slots;There are only hairpin coils of the same phase stator winding in the same stator slot.The flat wire motor, the magnetic field distribution of multiple parallel branches in each phase winding is the same, the magnetic potential is balanced, the circulating current between parallel branches is avoided, the efficiency of the flat wire motor is improved, the local temperature rise of the winding is avoided, and the service life of the flat wire motor is prolonged.

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