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

Abstract

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 winding and the third phase winding are obtained by rotating the first phase winding relative to the outer stator shaft. According to the embodiment of the invention, the stator winding adopts the first outer stator slot pitch combination and the second outer stator slot pitch combination, so that the space harmonics of the motor can be weakened, and the noise of the motor can be suppressed.

Description

technical field [0001] The present application relates to the field of motor design, in particular to an outer stator of a flat wire motor, a flat wire motor and a winding method for an outer stator core. Background technique [0002] Flat wire motors are gradually accepted by industries such as new energy vehicles due to their advantages such as high slot fill rate, high power density, fast heat dissipation, low noise, and short ends. [0003] At present, in the traditional three-phase multi-layer multi-branch parallel external stator inner rotor flat wire motor, the stator winding in the outer stator of the flat wire motor will generate motor space harmonics, which in turn will generate motor noise, affecting the outer stator inner rotor flat wire motor performance. Contents of the invention [0004] Based on this, it is necessary to address the problem that it is difficult to systematically design and improve the torque density of three-phase multi-layer multi-branch p...

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