Motor output power control method and device, medium and MCU

The invention relates to the technical field of electric vehicle motors, in particular to a motor output power control method and device, a medium and an MCU. And when the current temperature of the motor reaches the over-temperature threshold value, performing nonlinear derating control on the output power of the motor: dividing the over-temperature threshold value to the shutdown temperature into a plurality of temperature intervals, and obtaining the highest output power which can be reached when the motor completes the preset limit working condition in each temperature interval as the motor output power limit value of the temperature interval. According to the method, different derating output powers are executed in different temperature intervals, and the derating output powers reserve the temperature allowance required by the motor to execute the limit working condition; therefore, in different temperature intervals, the maximum working power of the motor is improved as much as possible while safe opera