US 12,407,206 B2
Stator for electric machine, electric machine, and motor vehicle
Tobias Engelhardt, Stuttgart (DE); and Stefan Oechslen, Stuttgart (DE)
Assigned to DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Jun. 2, 2022, as Appl. No. 17/830,387.
Claims priority of application No. 10 2021 114 737.9 (DE), filed on Jun. 8, 2021.
Prior Publication US 2022/0393538 A1, Dec. 8, 2022
Int. Cl. H02K 1/20 (2006.01); H02K 1/16 (2006.01); H02K 3/34 (2006.01); H02K 9/197 (2006.01); H02K 15/021 (2025.01)
CPC H02K 3/345 (2013.01) [H02K 1/165 (2013.01); H02K 1/20 (2013.01); H02K 9/197 (2013.01); H02K 15/021 (2025.01)] 13 Claims
OG exemplary drawing
 
1. A stator for an electric machine, comprising:
a laminated stator core having stator slots arranged along an axial direction parallel to a stator axis;
electric conductors arranged in the stator slots; and
fluidtight slot insulators arranged in the stator slots between the electric conductors and the laminated stator core,
wherein the slot insulators each have a cooling channel spaced apart from the electric conductors in a radial direction arranged orthogonally to the axial direction,
wherein the cooling channels are arranged in slots of the laminated stator core and in yoke-side recesses of the laminated stator core,
wherein the cooling channels have a smaller extension in a direction of rotation than the electric conductors,
wherein the yoke-side recesses have a smaller extension in the direction of rotation than the electric conductors, and
wherein the electric conductors are arranged in inner spaces of the slot insulators, and wherein the cooling channels are fluidically connected to the inner spaces.