US 12,294,280 B2
Integrated axial flux motor assemblies including planetary gearsets
Chengwu Duan, Shanghai (CN); Zhen Gao, Shanghai (CN); and Jian Yao, Shanghai (CN)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Apr. 25, 2022, as Appl. No. 17/728,260.
Claims priority of application No. 202210205908.0 (CN), filed on Mar. 4, 2022.
Prior Publication US 2023/0283145 A1, Sep. 7, 2023
Int. Cl. H02K 7/116 (2006.01); H02K 1/276 (2022.01); H02K 1/2793 (2022.01); H02K 5/173 (2006.01)
CPC H02K 7/116 (2013.01) [H02K 1/276 (2013.01); H02K 1/2793 (2013.01); H02K 5/1735 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An axial flux motor comprising:
a ring-shaped stator comprising a stator core and a plurality of segments arranged on the stator core, wherein each of the plurality of segments comprises a laminated stack and windings wrapped around the laminated stack;
a ring-shaped rotor defining an inner open area and comprising a body and a plurality of permanent magnets arranged on the body adjacent to and spaced from the plurality of segments; and
a planetary gear set disposed within the inner open area and configured to receive an input torque from the ring-shaped rotor and provide an output torque of the axial-flux motor, which is greater than the input torque;
a housing;
a brake; and
a clutch,
wherein:
the planetary gear set comprises a sun gear, a plurality of planetary gears and a ring gear;
the sun gear is connected to an output shaft and is connected to the planetary gears via the clutch and bearings;
the plurality of planetary gears are configured to rotate around the sun gear and are coupled to the ring-shaped rotor via a carrier and the bearings; and
the ring gear is connected to the housing via the brake.