Permanent-magnet synchronous motor rotor polarity detection equipment

Abstract

The invention discloses permanent-magnet synchronous motor rotor polarity detection equipment. The permanent-magnet synchronous motor rotor polarity detection equipment comprises a frame, a driving device, a Hall sensor and an angle sensor, wherein the driving device for driving a motor rotor to rotate is mounted on the frame, the Hall sensor is used for detecting magnetic steel polarity, the angle sensor is used for measuring a rotation angle of the rotor, and a distance between the Hall sensor and the axial center of the detected motor rotor is adjustable. The permanent-magnet synchronous motor rotor polarity detection equipment has the advantages that motor rotor magnetic steel is detected according to a Hall sensor principle, and the defects that reverse insertion and missing insertion of the magnetic steel and the magnetic steel is cracked or broken can be judged automatically, so that rotor polarity detection reliability is high and detection efficiency can be improved substantially; the equipment is highly flexible, applicable to production and inspection processes involving rotor polarity detection of multi-variety and multi-specification congeneric products and suitable for prototype production and small-batch and large-scale production.

Description

technical field [0001] The invention relates to a motor rotor detection device, in particular to a permanent magnet synchronous motor rotor polarity detection device. Background technique [0002] In the field of electric vehicles, the main drive motor will gradually move towards industrialization as an important part of electric vehicles in the future. Under the background of continuous optimization of product electromagnetic design and structural design and gradual maturity in the future, the practical multi-variety, small-batch flexible manufacturing technology and cost control of this type of product are particularly important. In the case that this type of product has not moved towards the real large-scale stable production, and in the case that the industrial factory process equipment including the assembly line has not yet made significant investment, considering the actual multi-variety, small-batch flexible production demand, what is the key process configuration of...

AI Technical Summary

Problems solved by technology

[0003] At present, in the production plants of permanent magnet synchronous motors for new energy vehicles, in the process of rotor polarity detection, some detection methods of polarity detection sheets are essentially for the inspectors to visually detect the magnetic lines of force reflected on the polarity detection sheets to distinguish the rotor. Polarity, it is difficult to ensure the process construction quality of permanent magnet synchronous motor rotor pole assembly process for new energy vehicles, such as reliability, stability, etc., and because of the strong magnetic effect, the requirements for the detection environment are relatively high

[0004] In addition, even if the detection method of the polarity detection sheet is changed to a gauss meter, the reliability of the detection is improved, but due to the low efficiency of the detection process, it is not suitable for small batch or large-scale production

[0005] To sum up, the detection methods currently used in the industry have defects such as quality reliability and low efficiency, and are not very desirable in the case of multi-variety, small-batch production and future large-scale production.

Images