Rotor of motor, driving motor and vehicle

Abstract

The invention discloses a rotor of a motor, a driving motor and a vehicle. The rotor comprises a rotor iron core and a plurality of first permanent magnets, wherein the rotor iron core is provided with a plurality of groove groups, the plurality of groove groups are distributed along the circumferential direction of the rotor iron core, each groove group comprises an air groove and a mounting groove, the air groove is ahead of the mounting groove along the first rotation direction of the rotor, a first magnetic isolation structure is arranged on one side, far away from the central point of the rotor iron core, of each air groove, a second magnetic isolation structure is arranged between the air groove and the mounting groove in the same groove group, a third magnetic isolation structure is arranged on one side, far away from the central point of the rotor iron core, of each mounting groove, and a fourth magnetic isolation structure is arranged on one side, close to the central point of the rotor iron core, of each air groove; the first permanent magnets are installed in the mounting grooves, the first permanent magnets are tangential magnetizing permanent magnets, and the distance between the first permanent magnets and the center point of the rotor iron core is smaller than the distance between the air grooves and the center point of the rotor iron core. According to the rotor provided by the embodiment of the invention, the peak torque of the motor is improved on the premise that the cost is almost unchanged.

Description

technical field [0001] The present invention relates to the technical field of motors, and more specifically, to a rotor of a motor, a driving motor and a vehicle. Background technique [0002] The rotor of the tangential permanent magnet type internal permanent magnet motor in the related art increases the torque density by increasing the volume of the permanent magnet, which greatly increases the production cost and resource consumption, or uses a symmetrical magnetic barrier to enhance the magnetic concentration effect to improve The torque density reduces the reluctance torque component, and the effect of increasing the torque density is poor. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to propose a kind of rotor of electric machine, and described rotor has improved the peak torque of electric machine and the component of ...

AI Technical Summary

Problems solved by technology

[0002] The rotor of the tangential permanent magnet type internal permanent magnet motor in the related art increases the torque density by increasing the volume of the permanent magnet, which greatly increases the production cost and resource consumption, or use symmetrical magnetic barriers to enhance the magnetic concentration effect to increase the torque density, which reduces the reluctance torque component, and the effect of increasing the torque density is poor

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