Rotor assembly and motor

A rotor assembly, comprising a rotor body, wherein

• the rotor body comprises a plurality of magnetic poles centered on an axis of the rotor body and uniformly arranged along a circumferential direction of the rotor body;
• each of the magnetic poles comprises a filling slot provided therein with a conductive and magnetic isolation material, and the filling slots of the plurality of magnetic poles are orderly arranged along the circumferential direction of the rotor body;
• two ends of each of the filling slots along the circumferential direction of the rotor body have a first sidewall and a second sidewall respectively;
• the first sidewall of each of the filling slots and the second sidewall of an adjacent filling slot are parallel to each other, and together form a magnetic flux channel parallel to a q-axis;
• the magnetic pole further comprises a slit slot separated from the filling slot, and the filling slot comprises a first filling slot;
• on a cross-section perpendicular to an axis of the rotor body, in the same magnetic pole, the slit slot and the first filling slot are arranged along a d-axis of the rotor body, and the slit slot is located between the first filling slot and the axis of the rotor body;
• on the cross-section perpendicular to the axis of the rotor body, the first filling slot and the slit slot are both axisymmetric shapes with the d-axis as a symmetry axis;
• the filling slot comprises second filling slots;
• the number of the second filling slots is twice the number of the slit slots;
• on the cross-section perpendicular to the axis of the rotor body, two filling slots are respectively provided at two ends of each of the slit slots and are symmetrical to each other with the d-axis as a symmetry axis;
• and
• in each of the magnetic poles, a distance between the first filling slot and the adjacent second filling slot along the circumferential direction of the rotor body is smaller than a distance between an adjacent two of the second filling slots.