US Patent 11539257 Electric machine with asymmetric hairpin crown

An electric machine is disclosed that includes a rotor, a stator and a plurality of pins. The stator is received inside the rotor and defines a plurality of slots for receiving the pins. The pins are conductors that are each joined with a circumferentially adjacent pins to form a conductive path for each power phase. The pins each have a first axial leg and a second axial leg that are each disposed in one of the plurality of slots. The first and second axial legs are joined by an asymmetric crown portion of the pin conductors. The crown portion includes a long arm and a short arm that are joined at an apex that is radially and circumferentially offset to be closer to the second leg than the first leg.