US 11,728,703 B2
Electric machine for a vehicle
Philip Grabherr, Stuttgart (DE); Mirko Hoerz, Esslingen (DE); Andrej Licen, Branik (SI); Stojan Markic, Kojsko (SI); Aleks Medvescek, Rence (SI); Peter Sever, Murska Sobota (SI); Josef Sonntag, Nuertingen (DE); and Hans-Ulrich Steurer, Stuttgart (DE)
Assigned to Mahle International GmbH, Stuttgart (DE)
Filed by Mahle International GmbH, Stuttgart (DE)
Filed on Jun. 3, 2020, as Appl. No. 16/892,255.
Application 16/892,255 is a continuation of application No. PCT/EP2018/081524, filed on Nov. 16, 2018.
Claims priority of application No. 10 2017 221 805.3 (DE), filed on Dec. 4, 2017.
Prior Publication US 2020/0295616 A1, Sep. 17, 2020
Int. Cl. H02K 3/24 (2006.01); H02K 5/15 (2006.01); B60K 1/00 (2006.01); H02K 9/22 (2006.01)
CPC H02K 3/24 (2013.01) [H02K 5/15 (2013.01); B60K 1/00 (2013.01); H02K 9/227 (2021.01)] 27 Claims
OG exemplary drawing
 
1. An electric machine for a vehicle, the electrical machine comprising:
a rotor, which can be rotated about an axis of rotation, which defines an axial direction of the electric machine;
a stator, which has several stator windings;
a coolant distribution chamber; and
a coolant collection chamber, which is arranged axially at a distance thereto,
wherein the coolant distribution chamber communicates fluidically with the coolant collection chamber with at least one cooling channel, through which a coolant can flow,
wherein the at least one cooling channel and the at least one stator winding are embedded in a plastic mass made of a plastic for thermal coupling to the coolant,
wherein the stator has stator teeth, which extend along the axial direction and which are arranged spaced apart from one another along a circumferential direction and which carry the stator windings,
wherein the at least one plastic mass is arranged together with the at least one cooling channel and with the at least one stator winding in an intermediate space, which is formed between two stator teeth, which are adjacent in the circumferential direction,
wherein, within the intermediate space, the at least one cooling channel is formed at least section by section as a tube body, which has two broad sides in a cross-section perpendicular to the axial direction,
wherein the two broad sides are located opposite one another in the circumferential direction,
wherein the tube body divides the intermediate space, which is limited by a first and a second stator tooth in the circumferential direction, into a first and a second partial space along the circumferential direction,
wherein a first stator winding, which is wound onto the first stator tooth, is arranged in the first partial space,
wherein a second stator winding, which is wound onto the second stator tooth, is arranged in the second partial space,
wherein the tube body surrounds a tube body interior,
wherein at least one separating element, which divides the tube body interior into at least two partial cooling channels, which are fluidically separated from one another, is integrally molded on the tube body,
wherein a first entire side of the two broad sides is arranged next to the first stator winding, and
wherein a second entire side of the two broad sides is arranged next to the second stator winding.