Patent ID: 11958364
Assignee: RIVIAN IP HOLDINGS, LLC
Field: Transport (Mechanical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 10:
11. A system for protecting a powertrain of a vehicle, the system comprising:
input circuitry configured to:
receive a signal from a sensor coupled to a motor shaft of an electric motor, wherein the sensor indicates an amount of rotation of the motor shaft;

control circuitry configured to:
determine an acceleration of the electric motor, based on the signal from the sensor;
determine an internal torque between the motor shaft and an input gear coupled to the motor shaft, based on the acceleration of the electric motor and an inertia of the electric motor and a gearbox, wherein the powertrain of the vehicle comprises the gearbox and the electric motor, and the input gear couples the electric motor to the gearbox;
determine whether the internal torque exceeds a conditional shutdown threshold torque;
in response to determining that the internal torque exceeds the conditional shutdown threshold torque, increment a counter; and
in response to determining that the counter exceeds a counter threshold, reduce power output to the electric motor.