US 12,283,863 B2
System, method and apparatus for direct liquid-cooled axial flux electric machine with multiple PCB stators
Randal A. Lee, Austin, TX (US); and Paulo Guedes-Pinto, Round Rock, TX (US)
Assigned to INFINITUM ELECTRIC INC., Round Rock, TX (US)
Filed by INFINITUM ELECTRIC, INC., Round Rock, TX (US)
Filed on Sep. 20, 2022, as Appl. No. 17/948,919.
Application 17/948,919 is a continuation of application No. 17/716,577, filed on Apr. 8, 2022, granted, now 11,476,734.
Application 17/948,919 is a continuation of application No. 17/227,888, filed on Apr. 12, 2021, granted, now 11,482,908.
Prior Publication US 2023/0019894 A1, Jan. 19, 2023
Int. Cl. H02K 5/20 (2006.01); H02K 1/2798 (2022.01); H02K 3/26 (2006.01); H02K 7/00 (2006.01); H02K 9/19 (2006.01); H02K 21/24 (2006.01)
CPC H02K 5/203 (2021.01) [H02K 1/2798 (2022.01); H02K 3/26 (2013.01); H02K 7/003 (2013.01); H02K 9/19 (2013.01); H02K 21/24 (2013.01); H02K 2203/03 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An axial field rotary energy device, comprising:
a housing;
rotor disks having an axis of rotation and rotatably coupled to the housing, and each rotor disk comprises a magnet on at least one side of the rotor disk;
printed circuit board (PCB) stators, each PCB stator is located axially between a pair of the rotor disks and coupled to the housing, each PCB stator comprises layers, and each layer comprises coils, wherein a number of the rotor disks is equal to a number of the PCB stators plus one, and the PCB stators are interleaved with the rotor disks;
a shaft coupled to the rotor disks and the housing, the shaft has a hollow section configured to be coupled to a source of a liquid coolant and to radial channels in the shaft, the radial channels extend radially relative to the axis, and the radial channels are substantially axially aligned with respective air gaps between the PCB stators and the rotor disks to dispense the liquid coolant between the rotor disks and the PCB stators; and
the shaft has flanges to receive the rotor disks, respectively.