US 11,990,810 B2
Printed circuit board stator axial field rotary energy device with ferromagnetic yoke and cooling plate
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 2, 2022, as Appl. No. 17/734,851.
Prior Publication US 2023/0353000 A1, Nov. 2, 2023
Int. Cl. H02K 3/26 (2006.01); H02K 9/19 (2006.01); H02K 21/24 (2006.01)
CPC H02K 3/26 (2013.01) [H02K 9/19 (2013.01); H02K 21/24 (2013.01); H02K 2203/03 (2013.01); H02K 2211/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An axial field rotary energy device, comprising:
a housing;
a rotor coupled to the housing, the rotor comprising an axis of rotation and a rotor disk comprising a magnet;
a cooling plate coaxial with the rotor and coupled to the housing, the cooling plate comprising a continuous sealed channel connected to an inlet and an outlet and configured to convey a liquid coolant;
a stator 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 stator is mechanically coupled to the housing, so the stator reacts to torque produced by the device; and
a ferromagnetic yoke coaxial with the rotor and the stator, the ferromagnetic yoke is mechanically and thermally coupled to the stator and to the cooling plate to provide a path for magnetic flux produced by the magnet and a path to conduct heat generated by the stator from the stator to the cooling plate.