US 12,294,265 B2
Flat wire stator and motor
Wenhui Luo, Beijing (CN)
Assigned to Xiaomi EV Technology Co., Ltd., Beijing (CN)
Filed by Xiaomi EV Technology Co., Ltd., Beijing (CN)
Filed on Jul. 29, 2022, as Appl. No. 17/877,058.
Claims priority of application No. 202210163266.2 (CN), filed on Feb. 22, 2022.
Prior Publication US 2023/0268789 A1, Aug. 24, 2023
Int. Cl. H02K 3/28 (2006.01)
CPC H02K 3/28 (2013.01) 17 Claims
OG exemplary drawing
 
1. A flat wire stator, comprising an iron core and a flat wire winding, wherein
the iron core has a plurality of iron core slots;
the flat wire winding comprises a first phase winding, the first phase winding comprises a plurality of coils, the plurality of coils are distributed in rotational symmetry around an axis of the iron core, the coils are wound in a portion of iron core slots in the plurality of iron core slots, first ends and second ends of the coils are located at the same end of the iron core, the first ends are located on sides of the iron core slots close to the axis of the iron core, and the second ends are located on sides of the iron core slots away from the axis of the iron core; and
the plurality of coils are connected in series in sequence, the first end of a coil is connected to the first end of one coil of two coils adjacent to the coil, and the second end of the coil is connected to the second end of the other coil of the two coils adjacent to the coil, wherein
the coils comprise a plurality of branches, and the plurality of branches in the same coil are arranged by offset of one iron core slot in sequence in a circumferential direction of the iron core,
at the first end of the coil, the plurality of branches are connected in one-to-one correspondence with a plurality of branches of one coil of two coils adjacent to the coil through a plurality of first jumper wires, and
at the second end of the coil, the plurality of branches are connected in one-to-one correspondence with a plurality of branches of the other coil of the two coils adjacent to the coil through a plurality of second jumper wires.