US 12,227,068 B2
Propulsion system for an electric vehicle
Loic Vassieux, Cergy Pontoise (FR); Dominique Lheureux, Cergy Pontoise (FR); Thibault Lemaire, Cergy Pontoise (FR); Benoist Auffray, Cergy Pontoise (FR); and Clément Derville Helluin, Cergy Pontoise (FR)
Assigned to VALEO EMBRAYAGES, Amiens (FR)
Filed by VALEO EMBRAYAGES, Amiens (FR)
Filed on Jan. 6, 2023, as Appl. No. 18/150,918.
Claims priority of application No. 22 00123 (FR), filed on Jan. 8, 2022.
Prior Publication US 2023/0219411 A1, Jul. 13, 2023
Int. Cl. B60K 1/02 (2006.01); B60K 17/08 (2006.01); B60K 17/16 (2006.01); F16H 37/08 (2006.01); F16H 57/02 (2012.01); F16H 57/04 (2010.01)
CPC B60K 17/08 (2013.01) [B60K 1/02 (2013.01); B60K 17/165 (2013.01); F16H 37/0806 (2013.01); F16H 57/02 (2013.01); F16H 57/0415 (2013.01); F16H 2057/02034 (2013.01); F16H 2057/02043 (2013.01); F16H 2200/0021 (2013.01); F16H 2200/0034 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A propulsion system for an electric vehicle, comprising:
an assembly of n electric propulsion machines, n being an integer greater than or equal to 3, each electric machine comprising a stator and a rotor having an output shaft that is movable in rotation about an axis;
a common gearwheel that is kinematically connected to the n output shafts and that is able to receive the drive torque C0 provided by the n electric machines, the n electric machines being angularly distributed around the common gearwheel so as to form a first speed reducer,
the propulsion system comprising:
primary gearwheels able to be driven by the common gearwheel,
an intermediate shaft able to be driven by intermediate gearwheels, each primary gearwheel being kinematically connected to a corresponding intermediate gearwheel so as to form a pair of gears with which a second speed reducer is associated,
a secondary shaft that is able to drive an assembly of one or more driving wheels of the vehicle and that has a secondary gearwheel kinematically connected to the intermediate shaft so as to form a third speed reducer,
wherein a first selective coupling system, disposed between the common gearwheel (11) and the primary gearwheels or alternatively between the intermediate shaft and the intermediate gearwheels, selects a first pair of gears or a second pair of gears from a neutral position.