Drive system for an electric vehicle

Drive system for an electric vehicle, comprising:

• a first sub-assembly of n1 electric drive machines capable of supplying a first motor torque, n1 being an integer greater than or equal to 2, each electric machine comprising a stator and a rotor having an output shaft rotatably mobile about an axis kinematically connected to a first common gear so as to form a first gear reducer,
• a second sub-assembly of n2 electric drive machines capable of supplying a second motor torque, n2 being an integer greater than or equal to 2, each electric machine comprising a stator and a rotor having an output shaft rotatably mobile about an axis kinematically connected to a second common gear so as to form a second gear reducer,
• a first set of gear trains kinematically connecting the first common gear to a secondary shaft capable of driving a set of one or more driving wheels of the vehicle, wherein a first selective coupling system, positioned between the first common gear and the secondary shaft, is arranged to select a first gear train or a second gear train from a neutral position during a gear change phase,
• a second set of gear trains kinematically connecting the second common gear to the secondary shaft,
• wherein the second sub-assembly of n2 electric machines is controlled so as to supply additional torque making it possible to fully compensate for the loss of torque resulting from the uncoupling of the first sub-assembly of n1 electric machines inherent in the gear change.