US 12,301,083 B2
Motor, and stator and electric device thereof
Kai Wu, Shanghai (CN)
Assigned to CONTEMPORARY AMPEREX INTELLIGENCE TECHNOLOGY (SHANGHAI) LIMITED, Shanghai (CN)
Filed by CONTEMPORARY AMPEREX INTELLIGENCE TECHNOLOGY (SHANGHAI) LIMITED, Shanghai (CN)
Filed on May 31, 2024, as Appl. No. 18/680,160.
Application 18/680,160 is a continuation of application No. PCT/CN2022/120031, filed on Sep. 20, 2022.
Prior Publication US 2024/0322629 A1, Sep. 26, 2024
Int. Cl. H02K 3/28 (2006.01); H02K 3/12 (2006.01); H02K 3/14 (2006.01)
CPC H02K 3/28 (2013.01) [H02K 3/12 (2013.01); H02K 3/14 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A stator of a motor, the stator comprising:
a stator iron core having a plurality of winding slots formed in an inner wall of the stator iron core; and
a stator winding provided at the stator iron core, the stator winding comprising a plurality of conductors inserted in the plurality of winding slots and a plurality of phase windings,
wherein n conductor layers are arranged in each of the plurality of winding slots, n being a positive even number, and the n conductor layers being denoted as an L1 conductor layer, an L2 conductor layer, and to an Ln conductor layer in a direction in which a bottom of the winding slot is directed towards an opening of the winding slot;
wherein each of the plurality of phase windings comprises a plurality of pole phase groups, each of the plurality of pole phase groups of the phase winding comprising a first region, a second region, and a third region, and the second region and the third region being respectively located at two sides of the first region;
wherein the L1 conductor layer to the Ln conductor layer are located in the first region, an Ln/2+1 conductor layer to the Ln conductor layer being located in the second region, and the L1 conductor layer to an Ln/2 conductor layer being located in the third region;
wherein each of the plurality of phase windings comprises a first branch and a second branch, the first branch comprising 4k conductors sequentially connected in series, where k is a positive integer, the 4k conductors of the first branch being denoted as an A1 conductor, to an A2k conductor, and to an A4k conductor, the second branch comprising 4k conductors sequentially connected in series, and the 4k conductors of the second branch being denoted as a B1 conductor, to a B2k conductor, and to a B4k conductor;
wherein the A1 conductor to the A2k conductor and the B1 conductor to the B2k conductor are arranged in the first region;
wherein some of an A2k+1 conductor to the A4k conductor are arranged in the second region, and the remaining of the A2k+1 conductor to the A4k conductor are arranged in the third region; and
wherein some of a B2k+1 conductor to the B4k conductor are arranged in the second region, and the remaining of the B2k+1 conductor to the B4k conductor are arranged in the third region.