US 12,068,651 B2
Winding structure for electric motor and electric motor
Jun Zhu, Shanghai (CN); Jian Wang, Shanghai (CN); ShaoRui Huang, Shanghai (CN); JieBao Li, Shanghai (CN); Wei He, Shanghai (CN); and YaRu Qu, Shanghai (CN)
Assigned to SAIC MOTOR CORPORATION LIMITED, Shanghai (CN)
Appl. No. 17/435,060
Filed by SAIC MOTOR CORPORATION LIMITED, Shanghai (CN)
PCT Filed Dec. 10, 2019, PCT No. PCT/CN2019/124249
§ 371(c)(1), (2) Date Aug. 31, 2021,
PCT Pub. No. WO2020/192181, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 201910223084.8 (CN), filed on Mar. 22, 2019.
Prior Publication US 2022/0140683 A1, May 5, 2022
Int. Cl. H02K 3/28 (2006.01); H02K 3/50 (2006.01)
CPC H02K 3/28 (2013.01) [H02K 3/50 (2013.01); H02K 2203/09 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A winding structure arranged on an iron core of a stator, the iron core having a plurality of slots arranged along a circumferential direction, one side of the iron core being an inserting side, and the opposite side being a welding side, wherein the winding structure comprises a plurality of hairpin-type conductors of different shapes located in the slots, N parallel-wound sub-windings formed by the plurality of hairpin-type conductor and electrode wiring conductors, where N is a positive even number;
wherein the conductors of each one of the N-parallel wound sub-windings of the winding structure of each phase are located in non-adjacent layers of the slot, each sub-winding including:
a first standard hairpin-type conductor having an in-slot section of a jth layer in one slot and an in-slot section of a j−1th layer of another slot spaced apart from the one slot by y slots in a first circumferential direction;
a second standard hairpin-type conductor having an in-slot section of the jth layer in one slot and an in-slot section of a j+1th layer of another slot spaced apart from the one slot by y slots in the first circumferential direction;
a hairpin-type conductor for serial connection having an in-slot section of an Lth-layer in one slot and an in-slot section of a first layer in another slot spaced apart from the one slot by y−1 slots in the first circumferential direction;
wherein a plurality of first standard hairpin-type conductor in a same winding cycle, which corresponds to a circumvolution in the first circumferential direction are configured such that: the in-slot sections in each slot are all in the same layer; the second standard hairpin-type conductor connects two first standard hairpin-type conductors of two neighboring winding cycles to form a secondary sub-winding; and the hairpin-type conductor for serial connection connects the first standard hairpin-type conductors of two neighboring secondary sub-windings in the first circumferential direction to form a sub-winding;
where y denotes winding pitch; L is the total number of the layers in a slot; j denotes a natural number meeting the condition 1≤j≤L; and the first circumferential direction is a clockwise direction or a counterclockwise direction.