Flat copper wire stator welding end welding quality detection and evaluation system method

Abstract

The invention discloses a flat copper wire stator welding end welding quality detection and evaluation system method. The method comprises three detection and evaluation methods of flat copper wire winding three-phase resistance detection, flat copper wire winding energization current detection and flat copper wire winding welding thermal imager detection. The flat copper wire stator welding end welding quality detection and evaluation system method can effectively detect and evaluate the effect of the flat copper wire welding quality.

Description

technical field [0001] The invention relates to the field of welding quality detection of flat copper wire stator welding ends. Background technique [0002] Permanent magnet synchronous motor is an electromechanical composite system involving many disciplines such as mechanics, electrical engineering and thermodynamics. Based on the traditional enamelled round copper wire as the electromagnetic wire of permanent magnet synchronous motor, many companies are currently trying to use enamelled flat copper wire. The copper wire is used as the magnet wire of the permanent magnet synchronous motor. The enamelled flat copper wire can realize automatic production and greatly improve the production efficiency, but the winding components of the flat copper wire stator are each individual hairpin coil, and the hairpin coil must be welded at the welding end by welding when the winding is connected In general, there will be more than 100 solder joints, and the process control and detect...

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Problems solved by technology

[0003] During the welding process of the flat copper wire, there may be welding defects such as virtual welding, unfused, undercut, and cracks. Some welding defects are not obvious after welding, and at the same time, there is a lack of necessary detection methods and means, which will lead to the winding of the motor. Parts in the process of long-term local heating too fast, affecting the performance index of the motor, reducing the service life of the motor

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