Rotor structure, permanent magnet auxiliary synchronous reluctance motor, and electric vehicle

A rotor structure, comprising a rotor body provided with permanent magnet slot groups, wherein the permanent magnet slot groups each comprises:

• an outer layer permanent magnet slot;
• an inner layer permanent magnet slot, wherein the outer layer permanent magnet slot and the inner layer permanent magnet slot are arranged to be adjacent to each other, and a magnetic conduction path is formed between the outer layer permanent magnet slot and the inner layer permanent magnet slot;
• the outer layer permanent magnet slot comprises:
• a first slot bent relative to the outer layer permanent magnet slot, wherein a first end of the first slot is in communication with the outer layer permanent magnet slot, and a second end of the first slot extends towards an outer edge of the rotor body and spreads gradually away from a direct axis;
• a third slot bent relative to the inner layer permanent magnet slot, wherein, a first end of the third slot is in communication with the inner layer permanent magnet slot;
• the third slot is arranged to be adjacent to the first slot, wherein the third slot is defined by a first side and a second side, the first side being parallel to the first slot and a portion of the second side arranged such that the portion is non-parallel with the first side;
• and a second end of the third slot extends towards the outer edge of the rotor body and spreads gradually away from the direct axis;
• a first outer layer permanent magnet slot segment, wherein, a first end of the first outer layer permanent magnet slot segment extends towards a rotation shaft hole of the rotor body;
• a second end of the first outer layer permanent magnet slot segment extends towards the outer edge of the rotor body and spreads gradually away from the direct axis;
• the first slot is in communication with the second end of the first outer layer permanent magnet slot segment;
• and a first flux barrier is formed between the second end of the first slot and the outer edge of the rotor body;
• and
• a second outer layer permanent magnet slot segment, wherein, a first end of the second outer layer permanent magnet slot segment extends towards the rotation shaft hole;
• a second end of the second outer layer permanent magnet slot segment extends towards the outer edge of the rotor body and spreads gradually away from the direct axis;
• the first outer layer permanent magnet slot segment and the second outer layer permanent magnet slot segment are arranged symmetrically relative to the direct axis;
• and a second flux barrier is formed between the second end of the third slot and the outer edge of the rotor body;
• the permanent magnet slot groups each further comprises a second slot, wherein
• a first end of the second slot is in communication with the second end of the second outer layer permanent magnet slot segment;
• the second end of the second slot extends towards the outer edge of the rotor body and spreads gradually away from the direct axis;
• an angle is formed by a length directional geometric center line of the first slot, and a length directional geometric center line of the second slot;
• and the first slot and the second slot are arranged symmetrically relative to the direct axis;
• A1 denotes a central angle corresponding to an arc of a connection line between a point, at which an extension line of a side wall of the first slot proximate to the direct axis and the outer edge of the rotor body intersect, and a point, at which an extension line of a side wall second slot proximate to the direct axis and the outer edge of the rotor body intersect, and A1>0.63×360°/p, wherein p denotes a number of poles.