Silicon steel sheet with low-stress structure, rotor and motor

The utility model relates to the technical field of motors, in particular to a silicon steel sheet with a low-stress structure, a rotor and a motor. Comprising a plurality of magnetic steel groups, each magnetic steel group comprises a pair of small permanent magnets close to the edge of the rotor and a pair of large permanent magnets close to the inner side of the rotor, radial slots are distributed in the yoke part of the rotor along the circumferential direction of the silicon steel sheet, and the magnetic steel groups are embedded in the magnetic steel slots. And the radial slots extend from the centers of the silicon steel sheets to the edges. The radial slots extending from the center of the silicon steel sheet to the edge are formed in the yoke part of the rotor along the circumferential direction, so that the rigidity difference of the iron cores on the left and right sides of the large permanent magnet can be reduced, the stress at the magnetic isolation bridge is effectively reduced, and the magneti