US 12,289,014 B2
Radial flux electrical machines
Lloyd Ash, Exeter (GB)
Assigned to DANA TM4 UK LTD, Chudleigh (GB)
Filed by Ashwoods Electric Motors Limited, Chudleigh (GB)
Filed on Sep. 1, 2023, as Appl. No. 18/460,421.
Application 17/345,993 is a division of application No. 15/532,889, granted, now 11,063,481, issued on Jul. 13, 2021, previously published as PCT/GB2015/053429, filed on Nov. 12, 2015.
Application 18/460,421 is a continuation of application No. 17/345,993, filed on Jun. 11, 2021, granted, now 11,870,301.
Claims priority of application No. 1421446 (GB), filed on Dec. 3, 2014.
Prior Publication US 2023/0412012 A1, Dec. 21, 2023
Int. Cl. H02K 1/276 (2022.01); H02K 1/14 (2006.01); H02K 5/16 (2006.01); H02K 7/00 (2006.01); H02K 7/14 (2006.01); H02K 11/21 (2016.01); H02K 11/215 (2016.01); H02K 11/25 (2016.01); H02K 15/022 (2025.01); H02K 15/03 (2006.01)
CPC H02K 1/148 (2013.01) [H02K 1/276 (2013.01); H02K 5/163 (2013.01); H02K 7/006 (2013.01); H02K 7/14 (2013.01); H02K 11/21 (2016.01); H02K 11/215 (2016.01); H02K 11/25 (2016.01); H02K 15/022 (2013.01); H02K 15/03 (2013.01)] 16 Claims
OG exemplary drawing
 
7. A radial flux electric machine comprising:
a rotor comprising:
a bore forming a through passage between a first axial face of the rotor and a second axial face of the rotor;
a hub surrounding the bore circumferentially around the bore;
arms extending radially outward from the circumference of the hub and gaps formed between the arms; and
slots arranged circumferentially around the radially outer side of the arms, the slots extending axially into the rotor, and permanent magnets positioned within the slots such that the permanent magnets are arranged circumferentially around the bore;
a stator having an outer circumference extending circumferentially around the rotor and the bore, the stator comprising:
electromagnetic elements comprising a body portion extending radially inward from the outer circumference of the stator, the body receiving windings, and the windings are arranged circumferentially around the bore, interior to the outer circumference of the stator, and exterior to the permanent magnets; and
an encoder and printed circuit board (PCB) positioned along one of the axial faces of the rotor, the encoder sensing a rotation of the rotor via one or more magnets coupled to the rotor, wherein the PCB is attached to a controller housing located external to a stator enclosure;
wherein the PCB is attached to the stator enclosure and the stator enclosure extends along one of the axial faces of the rotor.