US 12,456,894 B2
Axial flux electric machine pole piece with conductive ribbons
Yateendra B Deshpande, Sunnyvale, CA (US); and Ankit Somani, Sunnyvale, CA (US)
Assigned to Conifer Systems, Inc., Middletown, DE (US)
Filed by Conifer Systems, Inc., Middletown, DE (US)
Filed on Aug. 31, 2023, as Appl. No. 18/241,159.
Claims priority of provisional application 63/403,281, filed on Sep. 1, 2022.
Prior Publication US 2024/0079922 A1, Mar. 7, 2024
Int. Cl. H02K 1/18 (2006.01); H02K 3/18 (2006.01); H02K 3/32 (2006.01); H02K 21/24 (2006.01)
CPC H02K 3/18 (2013.01) [H02K 1/182 (2013.01); H02K 3/325 (2013.01); H02K 21/24 (2013.01); H02K 2203/15 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An axial flux electric machine comprising:
a stator having a plurality of pole pieces;
a rotor spaced apart from the stator in an axial direction of the axial flux electric machine;
a coiled ribbon of conductive material forming at least part of a pole piece in the plurality of pole pieces;
a coiled ribbon of soft magnetic material forming at least part of the pole piece;
wherein an axial direction of the coiled ribbon of conductive material is substantially parallel to the axial direction of the axial flux electric machine;
wherein the coiled ribbon of soft magnetic material and the coiled ribbon of conductive material are commonly coiled in an interleaved composite material coil; and
wherein the coiled ribbon of conductive material is at least partially sheathed in insulating material such that the coiled ribbon of conductive material comprises a conductive core that is insulated from ohmic contact in the interleaved composite material coil.