US 12,206,288 B2
Rotor for an electric machine
Alireza Fatemi, Canton, MI (US); Huaxin Li, Rochester Hills, MI (US); Yucong Wang, West Bloomfield, MI (US); Eric C. Clough, Santa Monica, CA (US); and Jonathan Watson, San Diego, CA (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Aug. 9, 2022, as Appl. No. 17/883,887.
Prior Publication US 2024/0055919 A1, Feb. 15, 2024
Int. Cl. H02K 1/27 (2022.01); H02K 1/276 (2022.01); H02K 15/02 (2006.01); H02K 15/03 (2006.01); H02K 21/12 (2006.01)
CPC H02K 1/2766 (2013.01) [H02K 15/024 (2013.01); H02K 15/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric machine, comprising:
a stator; and
a rotor comprising stacked plurality of electrical steel laminations forming a slot including a first end and opposing sides, the first end defined by a bridge extending between electrical steel on opposing sides of the slot, the bridge being located between the first end of the slot and an outer diameter surface of the rotor and beneath the outer diameter surface of the rotor, the bridge forming a base of a channel open at an outer diameter surface of the rotor,
wherein the bridge comprises an electrical steel bridge section integral with the laminations and a supplemental bridge support comprising a structural flux barrier.