Stator assembly, driving motor and winding method of stator assembly

The invention provides a stator assembly, a driving motor and a winding winding method of the stator assembly, relates to the technical field of driving motors, and is used for solving the technical problem of low slot fullness factor. The stator assembly comprises a stator core and a multi-phase winding, and a plurality of winding mounting slots are distributed in the inner circumferential wall of the stator core along the circumferential direction; m layers of mounting positions arranged in the radial direction of the stator core are arranged in each winding mounting groove, and the multi-phase windings are arranged in the winding mounting grooves based on the M layers of mounting positions, so that M layers of conductors are arranged in the winding mounting grooves; each parallel branch of each phase of winding comprises a first coil group and a second coil group, and the first coil group and the second coil group are wound in the winding mounting groove according to the first span, the second span and the