Flat wire motor outer stator, flat wire motor and outer stator core winding method

The invention relates to a flat wire motor outer stator, a flat wire motor and an outer stator core winding method. The first branch of the first phase winding of the outer stator of the flat wire motor is inserted in the sub winding layer from the first inlet wire along the first direction by taking the first outer stator slot pitch combination as the span. And the second branch of the first phase winding starts from the second wire inlet end and is staggered on the sub-winding layer along the first direction by taking the slot pitch combination of the second outer stator as the span. And a third branch of the first phase winding is inserted in the sub winding layer from a third wire inlet end along a second direction by taking a second outer stator slot pitch combination as a span. And a fourth branch of the first phase winding is inserted in the sub winding layer from the fourth wire inlet end along the first direction by taking the first outer stator slot pitch combination as the span. The second phase wi