Rotor for disc permanent magnet motor and disc permanent magnet motor comprising the same

A rotor for a disc permanent magnet motor, comprising:

• a first rotor core;
• a second rotor core;
• and
• a plurality of magnetic tiles;
• wherein:
• the first rotor core comprises a first annular ring and a plurality of first magnetic blocks protruding at intervals from an outer side of the first annular ring in a circumferential direction, and a first groove is formed between every two adjacent first magnetic blocks;
• the second rotor core comprises a second annular ring and a plurality of second magnetic blocks protruding at intervals from an outer side of the second annular ring in a circumferential direction, and a second groove is formed between every two adjacent second magnetic blocks;
• the first rotor core and the second rotor core are axially embedded with each other;
• the first magnetic blocks are embedded in second grooves, and the second magnetic blocks are embedded in first grooves;
• each of the plurality of second magnetic blocks comprises two sides, and a first side groove and a second side groove are respectively formed between the two sides and two adjacent first magnetic blocks;
• an axial thickness H1 of the second magnetic blocks is smaller than an axial thickness H2 of the first magnetic blocks, so that a first top surface of the second magnetic blocks is lower than a second top surface of two adjacent first magnetic blocks, thereby forming a top groove on the second magnetic blocks;
• and
• each of the plurality of magnetic tiles comprises a top tile, a first side tile and a second side tile, and the first side tile and the second side tile are respectively connected to two ends of the top tile;
• the top tile is embedded in the top groove, and the first side tile and the second side tile are respectively embedded in the first side groove and the second side groove, respectively.