US 12,351,033 B2
Power transmission assembly and vehicle comprising this assembly
Luc Michel, Evecquemont (FR)
Assigned to IDEE SERVICES, Evecquemont (FR)
Appl. No. 17/768,112
Filed by IDEE SERVICES, Evecquemont (FR)
PCT Filed Oct. 1, 2020, PCT No. PCT/FR2020/051728
§ 371(c)(1), (2) Date Apr. 11, 2022,
PCT Pub. No. WO2021/069819, PCT Pub. Date Apr. 15, 2021.
Claims priority of application No. 1911321 (FR), filed on Oct. 11, 2019.
Prior Publication US 2024/0278634 A1, Aug. 22, 2024
Int. Cl. B60K 6/44 (2007.10); B60K 6/36 (2007.10); B60K 6/445 (2007.10); B60K 1/00 (2006.01)
CPC B60K 6/445 (2013.01) [B60K 6/36 (2013.01); B60K 2001/001 (2013.01); B60Y 2400/73 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A power transmission assembly for a vehicle comprising:
an electric machine comprising a stator fixed relative to the vehicle and a rotor movable in rotation relative to a rotation axis of said electric machine, and
a differential comprising at least one differential input connected to the rotor of the electric machine, said differential comprising a plurality of cogwheels connected with each other to distribute the differential input power between:
a first output intended to be connected to a first power transmission shaft transmitting power to a first wheel, and
a second output intended to be connected to a second power transmission shaft transmitting power to a second wheel,
the distribution being a function of the rotation speed of the first output and second output,
the cogwheels are distributed around the electric machine, the electric machine being located inside the space of the differential,
the assembly being characterized in that:
the electric machine is an inverted machine in which the rotor is radially outside the stator with respect to the rotation axis;
wherein the differential includes the following cogwheel subassemblies;
a first epicyclic gearing arranged along the rotation axis AX on a first side of the electric machine,
a second epicyclic gearing arranged along the rotation axis AX on a second side of the electric machine, and opposite the first side, and
a linking mechanism which links the first epicyclic gearing to the second epicyclic gearing,
the first and second epicyclic gearings being identical; and
wherein the linking mechanism comprises a bevel pinion, the first epicyclic gearing comprising an outer crown gear with a complementary conical eating surface for meshing with the bevel pinion, and the second epicyelic gearing comprising an outer crown gear with a complementary bevel conical seating surface for meshing with the bevel pinion.