Electric pump for power supply thermal management system of electric vehicle

An electric pump for an electric automobile power supply thermal management system comprises a motor and an impeller in axial transmission of the motor, and the impeller drives pump liquid in a volute chamber. The cavity surrounds the periphery of the cylindrical surface of the motor, and the heater is arranged in the cavity and used for heating pump liquid; the cavity is formed by directly butting and enclosing a pump cover and a pump body which are positioned at the two ends of the motor; the heater is cylindrical and is positioned between the outer circumference and the inner circumference of the cavity along the axial direction, and the space between the outer circumference and the inner circumference of the cavity is divided into two runners which are respectively and directly communicated with the volute chamber or the discharge port of the electric pump and are used for the pump liquid to pass through, namely an inner circumference runner positioned on the inner circumference of the cylindrical cavity