US 12,126,240 B2
Electric machine having a plastic body
Timo Wehlen, Friedrichshafen (DE); Eckhardt Lübke, Friedrichshafen (DE); Andreas Hölscher, Uhldingen-Mühlhofen (DE); Martin Jelinewski, Nonnenhorn (DE); and Manfred Till, Friedrichshafen (DE)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Appl. No. 17/602,376
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
PCT Filed Mar. 4, 2020, PCT No. PCT/EP2020/055633
§ 371(c)(1), (2) Date Oct. 8, 2021,
PCT Pub. No. WO2020/216506, PCT Pub. Date Oct. 29, 2020.
Claims priority of application No. 10 2019 205 752.7 (DE), filed on Apr. 23, 2019.
Prior Publication US 2022/0166280 A1, May 26, 2022
Int. Cl. H02K 5/08 (2006.01); H02K 5/16 (2006.01); H02K 5/20 (2006.01); H02K 9/22 (2006.01)
CPC H02K 5/08 (2013.01) [H02K 5/163 (2013.01); H02K 5/203 (2021.01); H02K 9/223 (2021.01)] 16 Claims
OG exemplary drawing
 
1. An electric machine (1), comprising:
a housing (2);
a stator (4) fixed relative to the housing (2), the stator having at least one soft magnetic core (6), first winding overhangs (7a), and second winding overhangs (7b);
a rotor (5) arranged radially within the stator (4); and
a plastic body (3) fixing the stator (4) relative to the housing (2),
wherein the plastic body (3) is electrically insulating,
wherein the plastic body (3) radially surrounds an outside of the at least one soft magnetic core (6) of the stator (4) and the first and second winding overhangs (7a, 7b) of the stator (4) and axially surrounds an end face (9a) of the first winding overhangs (7a) and an end face (9b) of the second winding overhangs (7b), and
wherein the plastic body (3) defines at least one channel (8) for accommodating a coolant, the at least one channel (8) having a first portion extending circumferentially along at least forty percent of the end face (9a) of the first winding overhangs (7a), a second portion extending along an outer circumferential surface (10) of the stator (4), and a third portion extending circumferentially along at least forty percent of the end face (9b) of the second winding overhangs (7b).