Control method for motor of electric automobile and electric automobile

• Main Authors: ZHANG ZHENXING, MA JINBO, LIU XINYUE
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a control method for a motor of an electric vehicle and the electric vehicle. The control method for the motor comprises the steps that the current request torque of the motor and the current temperature of a stator of the motor are obtained; and determining the current torque upper limit of the motor corresponding to the current temperature according to the mapping relation between the temperature of the stator of the motor and the torque upper limit of the motor. And determining the current output torque according to the current request torque and the current torque upper limit. And controlling the motor according to the current output torque. If the temperature of the stator of the motor is greater than the critical temperature and less than or equal to the first equilibrium temperature, the torque upper limit of the motor is linearly attenuated from the peak torque to the first torque at a first attenuation rate. If the temperature of the stator of the motor is greater than the firs