US 12,334,781 B2
Cooling system with thermoelectric device in sealed stator chamber for variable torque generation electric machine
Harley C. McDonald, Merritt Island, FL (US); James L. Bailey, Titusville, FL (US); and Matthew C. McDonald, Merritt Island, FL (US)
Assigned to Falcon Power, LLC, Titusville, FL (US)
Filed by Falcon Power, LLC, Titusville, FL (US)
Filed on Mar. 2, 2021, as Appl. No. 17/190,347.
Claims priority of provisional application 63/077,243, filed on Sep. 11, 2020.
Claims priority of provisional application 62/984,270, filed on Mar. 2, 2020.
Prior Publication US 2021/0273502 A1, Sep. 2, 2021
Int. Cl. H02K 1/20 (2006.01); H02K 1/16 (2006.01); H02K 1/278 (2022.01); H02K 3/24 (2006.01); H02K 5/10 (2006.01); H02K 5/20 (2006.01); H02K 9/197 (2006.01); H02K 11/28 (2016.01); H02K 29/03 (2006.01); H03K 3/011 (2006.01); H03K 17/687 (2006.01); H05K 7/20 (2006.01)
CPC H02K 11/28 (2016.01) [H02K 1/16 (2013.01); H02K 1/20 (2013.01); H02K 1/278 (2013.01); H02K 3/24 (2013.01); H02K 5/20 (2013.01); H02K 9/197 (2013.01); H02K 29/03 (2013.01); H03K 3/011 (2013.01); H03K 17/6871 (2013.01); H05K 7/209 (2013.01); H02K 5/10 (2013.01); H02K 2213/03 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electric machine, comprising:
a housing comprising a wall that defines a sealed stator chamber, the wall extending from a first end to a second end;
a stator assembly disposed within the sealed stator chamber, the stator assembly comprising a stator core and a plurality of wire windings supported by the stator core, the stator assembly including a first stator end plate, a second stator end plate, and a periphery surface that extends from the first stator end plate to the second stator end plate;
a first plurality of thermoelectric devices arranged between the periphery surface of the stator assembly and the wall of the sealed stator chamber;
a second plurality of thermoelectric devices arranged between the first stator end plate of the stator assembly and the first end of the sealed stator chamber;
a third plurality of thermoelectric devices arranged between the second stator end plate of the stator assembly and the second end of the sealed stator chamber; and
a controller electrically coupled and configured to supply a current to each of the thermoelectric devices,
wherein the sealed stator chamber is configured to receive a coolant that is circulated through the sealed stator chamber over the stator core and plurality of wire windings to remove heat from the stator core and the plurality of wire windings, and
wherein the coolant is circulated over the first, second, and third pluralities of thermoelectric devices, each of the thermoelectric devices operating as thermoelectric coolers (TEC) utilizing the Peltier effect when each of the thermoelectric devices receives the current to thereby accelerate heat transfer from the coolant,
wherein each thermoelectric device generates a temperature differential as thermoelectric coolers (TEC) in utilizing the Peltier effect based on the current.