ELECTRIC MOTOR, ELECTRIC MOTOR COOLING SYSTEM AND ELECTRIC VEHICLE

This application provides a motor, including a motor housing and a stator core mounted in the motor housing. The motor housing is provided with a distribution groove, a liquid inlet channel, and a liquid outlet channel. The distribution groove is provided on an inner wall of the motor housing, the liquid inlet channel is in communication with the distribution groove and an outer space of the motor housing, and the liquid outlet channel is in communication with inner and outer spaces of the motor housing. An outer wall of the stator core is provided with a stator groove, an extension direction of the stator groove intersects an extension direction of the distribution groove, and opposite ends of the stator groove in the extension direction are both closed. The stator groove is in communication with both the distribution groove and the liquid outlet channel. The liquid inlet channel, the distribution groove, the stator groove, and the liquid outlet channel are in communication to form a coolant channel. This application further provides a motor cooling system including the motor, and an electric vehicle including the motor cooling system. The solutions of this application improve heat dissipation efficiency of a stator of the motor.