US 12,294,266 B2
Stator winding with over-under end turns for crossover alignment
Kirk Neet, Noblesville, IN (US)
Assigned to BorgWarner Inc., Auburn Hills, MI (US)
Filed by BorgWarner Inc., Auburn Hills, MI (US)
Filed on May 30, 2023, as Appl. No. 18/325,535.
Application 18/325,535 is a continuation in part of application No. 17/833,368, filed on Jun. 6, 2022, granted, now 12,132,369.
Claims priority of provisional application 63/415,820, filed on Oct. 13, 2022.
Prior Publication US 2023/0396115 A1, Dec. 7, 2023
Int. Cl. H02K 3/28 (2006.01)
CPC H02K 3/28 (2013.01) 20 Claims
OG exemplary drawing
 
1. A stator for an electric machine comprising:
a stator core including a plurality of teeth defining a number of slots in the stator core; and
a multi-phase winding positioned on the stator core, the winding comprising a plurality of segmented conductors connected together to provide a plurality of parallel paths per phase for the winding, each conductor comprising (i) an end loop provided on a crown end of the stator core, (ii) two legs extending through the slots of the stator core, and (iii) two leg ends extending out of the slots on a connection end of the stator core, each leg end having a twist portion, wherein the leg ends of different conductors are connected together to form the multi-phase winding that wraps around the stator core;
wherein the winding defines a number of conductor layers in each slot, a number of poles, a plurality of parallel paths per phase, and a number of slots-per-pole-per-phase;
wherein the end loops on the crown end include a plurality of standard-pitch end loops and a plurality of sets of over-under end loops; and
wherein a plurality of crossover end loops for at least one of the plurality of parallel paths per phase are substantially aligned in a radial direction on the connection end.