This application provides a motor controller, a powertrain, and an electric vehicle. The motor controller is configured to output a drive current or a heating current to an asynchronous motor, and both the drive current and the heating current are three-phase currents. A waveform of each phase current of the drive current is a sine wave, and the drive current is used to control the asynchronous motor to output torque. A waveform of each phase current of the heating current is a square wave or a step wave, and the heating current is used to control the torque output by the asynchronous motor to be zero, and heat a winding of the asynchronous motor. Heat generated by the heating current on the winding of the asynchronous motor heats a power battery via a heat conduction apparatus. The motor controller provided in this application adjusts a waveform of the heating current, to reduce thermal stress on a switch component in the motor controller, to prolong a service life of the switch component. When switch components used by the motor controller have a same heat resistance capability, heating power can be further increased.
MOTOR CONTROLLER, POWERTRAIN, AND ELECTRIC VEHICLE
MOTORSTEUERUNG, ANTRIEBSSTRANG UND ELEKTROFAHRZEUG
DISPOSITIF DE COMMANDE DE MOTEUR, GROUPE MOTOPROPULSEUR ET VÉHICULE ÉLECTRIQUE
2025-06-18
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
POWERTRAIN, ELECTRIC MOTOR CONTROLLER, CONTROL APPARATUS, AND ELECTRIC VEHICLE
European Patent Office | 2024
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