US 12,224,624 B2
Printed circuit board stator axial field rotary energy device with rotor disks and ferromagnetic yoke
Bahareh Anvari, Round Rock, TX (US); Paulo Guedes-Pinto, Round Rock, TX (US); and Randal A. Lee, Austin, TX (US)
Assigned to Infinitum Electric Inc., Round Rock, TX (US)
Filed by Infinitum Electric, Inc., Round Rock, TX (US)
Filed on May 3, 2022, as Appl. No. 17/735,264.
Prior Publication US 2023/0361634 A1, Nov. 9, 2023
Int. Cl. H02K 1/27 (2022.01); H02K 1/02 (2006.01); H02K 1/12 (2006.01); H02K 5/04 (2006.01); H02K 9/193 (2006.01)
CPC H02K 1/27 (2013.01) [H02K 1/02 (2013.01); H02K 1/12 (2013.01); H02K 5/04 (2013.01); H02K 9/193 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An axial field rotary energy device
a housing;
a rotor coupled to the housing and comprising an axis of rotation and a plurality of rotor disks comprising magnets;
stators coaxial with the rotor and comprising a printed circuit board (PCB) having a plurality of conductive layers laminated together with layers of an insulating material, each conductive layer comprises a plurality of coils that can carry electrical current when connected to an external voltage source, and the stators are directly and axially mechanically coupled to the housing, so the stators react to torque produced by the device;
ferromagnetic yokes coaxial with the rotor and the stators, the ferromagnetic yokes are directly mechanically and thermally coupled to the stators, respectively, and provide a path for magnetic flux produced by the magnets and a direct path to conduct heat generated by the stators from the stators to cooling plates, and the ferromagnetic yokes do not transmit torque;
the cooling plates are coaxial with the rotor and coupled to the ferromagnetic yokes, respectively, and the cooling plates comprise a continuous sealed channel connected to an inlet and an outlet and configured to convey a liquid coolant;
the housing comprises end sections and mid-sections wherein:
each end section is configured to be directly mechanically coupled to a respective stator, ferromagnetic yoke, cooling plate and mid-section; and
each mid-section is configured to be directly mechanically coupled to a respective stator, ferromagnetic yoke, cooling plate and end section.