High-speed motor rotor and motor

Abstract

The invention provides a high-speed motor rotor and a motor. The high-speed motor rotor comprises a cylindrical rotor body, wherein the center of the cylindrical rotor body is provided with a through hole. The high-speed motor rotor is characterized in that the circular end face of the rotor body is uniformly provided with a plurality of Y-shaped holes, each Y-shaped hole is formed by two symmetric V-shaped arms and a 1-shaped leg, the tail end of the 1-shaped leg forms a tail end through hole, the V-shaped arms form through holes respectively, the 1-shaped leg between an intersection point of the V-shaped arms the tail end through hole forms a groove with certain depth at the circular end face; the middle parts of the through holes of the V-shaped arms are inserted with magnetic steel, the length and the height of the magnetic steel are less than the length and the height of the through holes of the arms, and the width of the magnetic steel adapts to the width of the through holes of the arms; each Y-shaped hole is filled with resin except for the part occupied by the magnetic steel, so that the centrifugal force resistant capacity of the magnetic steel is further enhanced, the mechanical strength of the motor rotor and the motor is improved under the premise of not changing the magnetic field strength of the rotor, and work with high intensity and high torque can be realized.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a high-speed motor rotor and a motor. Background technique [0002] At present, the world is paying more and more attention to the environment, and fuel vehicles, as the main body of greenhouse gas emissions, are subject to more and more restrictions. Fuel shortages, rising oil prices, and reduced emissions, etc., will inevitably withdraw from the market in the foreseeable future. future. As a substitute for fuel vehicles, electric vehicles have come into people's attention because of their simple structure, safety, comfort, economy and environmental protection. It is against this background that the present invention proposes a high-speed, high-torque electric vehicle drive motor. The method used by traditional electric vehicle drive motors to increase the output power of the motor is to increase the length of the motor armature and increase the height of the motor axis (motor ...

AI Technical Summary

Problems solved by technology

The traditional method of increasing the length of the motor armature not only increases the overall mass of the motor, but also reduces the power density ratio, reduces the one-time cruising range of electric vehicles, and increases production investment.

Moreover, increasing the volume of the motor for an electric vehicle with a relatively fixed volume size will further cause inconvenience.

[0003] In order to improve the air gap magnetic field strength of the motor, the motor rotor is designed so that the magnetic steel is as close as possible to the periphery of the motor rotor. However, the high-speed rotation of the motor causes the magnetic steel to be subject to a large centrifugal force, which easily deforms the weak position on the periphery of the motor rotor. Slight deformation affects the magnetic field density distribution of the motor. Severe deformation may even cause the motor rotor to damage the motor, so it is urgent to invent a motor rotor and motor that can meet high-speed rotation to realize the production of high-speed and high-torque electric vehicle drive motors

Images