Method for monitoring the wear of a powertrain of an electric vehicle and electric vehicle implementing said method

A method for monitoring the wear of a powertrain of an electric vehicle, the powertrain comprising at least one electric motor and a drivetrain, the drivetrain being configured to deliver a motor torque produced by the electric motor to mechanical components of the electric vehicle to drive the mechanical components,

• wherein the method comprises an analysis cycle that includes, in this order:
• preventing the mechanical components from moving;
• rotating the electric motor in a first direction of rotation until a torque value delivered by the electric motor reaches a predetermined threshold, a first angular position of the electric motor being reached;
• rotating the electric motor in a second direction of rotation opposite to the first direction of rotation until a torque value delivered by the electric motor reaches the predetermined threshold, a second angular position of the electric motor being reached;
• calculating a backlash value of the powertrain on the basis of the first angular position and of the second angular position,
• wherein the method further comprises comparing the backlash value calculated during the analysis cycle to a reference value to monitor wear of the powertrain,
• wherein the method further comprises a reference cycle, performed before the analysis cycle, wherein the reference cycle includes, in this order:
• preventing the mechanical components from moving;
• rotating the electric motor in the first direction of rotation until a torque value delivered by the electric motor reaches the predetermined threshold, a first reference angular position of the electric motor being reached;
• rotating the electric motor in the second direction of rotation until a torque value delivered by the electric motor reaches the predetermined threshold, a second reference angular position of the electric motor being reached;
• calculating a reference backlash value of the powertrain on the basis of the first reference angular position and of the second reference angular position, and
• wherein the reference value against which the backlash value calculated during the analysis cycle is compared is the reference backlash value calculated during the reference cycle.