Rotor structure, permanent magnet assisted synchronous reluctance motor and electric car

A rotor structure, comprising:

• a rotor body opened with a group of permanent magnet slots, wherein the group of permanent magnet slots comprise an inner-layer permanent magnet slot and an outer-layer permanent magnet slot which are arranged at intervals outwards along a radial direction of the rotor body;
• an inner-layer permanent magnet disposed within the inner-layer permanent magnet slot;
• an outer-layer permanent magnet disposed within the outer-layer permanent magnet slot, wherein the inner-layer permanent magnet and the outer-layer permanent magnet are arranged staggeredly;
• wherein a first end and a second end of the inner-layer permanent magnet slot are arranged to extend toward an outer edge of the rotor body along a radial direction of the rotor body, the first end of the inner-layer permanent magnet slot and the second end of the inner-layer permanent magnet slot are arranged oppositely and located on both sides of a direct-axis of the rotor body, a first end and a second end of the outer-layer permanent magnet slot are arranged to extend toward the outer edge of the rotor body along the radial direction of the rotor body, the first end of the outer-layer permanent magnet slot and the second end of the outer-layer permanent magnet slot are arranged oppositely and located on both sides of the direct-axis, the first end of the inner-layer permanent magnet slot and the first end of the outer-layer permanent magnet slot are arranged adjacently, the second end of the inner-layer permanent magnet slot and the second end of the outer-layer permanent magnet slot are arranged adjacently, and
• a distance between the first end of the inner-layer permanent magnet slot and the first end of the outer-layer permanent magnet slot gradually increases outwards along the radial direction of the rotor body, or a distance between the second end of the inner-layer permanent magnet slot and the second end of the outer-layer permanent magnet slot gradually increases outwards along the radial direction of the rotor body;
• or
• the distance between the first end of the inner-layer permanent magnet slot and the first end of the outer-layer permanent magnet slot gradually increases outwards along the radial direction of the rotor body, and the distance between the second end of the inner-layer permanent magnet slot and the second end of the outer-layer permanent magnet slot gradually increases outwards along the radial direction of the rotor body.