US 12,456,890 B2
Skewed rotor for electric motor
Emad Dlala, Pleasanton, CA (US); Yateendra Deshpande, Sunnyvale, CA (US); and Vivek Meenakshi Sundaram, Newark, CA (US)
Assigned to Atieva, Inc., Newark, CA (US)
Filed by Atieva, Inc., Newark, CA (US)
Filed on Jul. 10, 2023, as Appl. No. 18/349,469.
Claims priority of provisional application 63/368,191, filed on Jul. 12, 2022.
Prior Publication US 2024/0022128 A1, Jan. 18, 2024
Int. Cl. H02K 1/27 (2022.01); H02K 1/276 (2022.01)
CPC H02K 1/276 (2013.01) [H02K 2201/06 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An electric motor comprising:
a stator having slots; and
a rotor including a stack of rotor laminations, the rotor comprising:
a first substack of the rotor laminations, wherein the rotor laminations in the first substack include first rivet holes and first magnet holes with first permanent magnets; and
a second substack of the rotor laminations, wherein the rotor laminations in the second substack include second rivet holes and second magnet holes with second permanent magnets, and wherein an orientation of the first substack and the second substack relative to each other provides the rotor with a skew;
wherein the rotor laminations in the first substack have a first pattern, wherein the rotor laminations in the second substack have a second pattern different from the first pattern; and
wherein the first pattern is asymmetric with regard to a rotor radius, and wherein the second pattern is symmetric with regard to the rotor radius.