A high-power starter stator coil leading flexible stranded wire connection process

Abstract

The invention provides a large-power starter stator coil lead-out flexible stranded wire connecting technology. The technology includes the following steps that firstly, a die of the same shape is made in a matched manner according to the shape of an upper connecting part of a starter shell assembly (2); secondly, the end portion of a lead-out flexible stranded wire (11) in a lead-out flexible stranded wire assembly (1) is extruded to be in the needed shape; thirdly, copper-based brazing foil is used for wrapping the end portion of the lead-out flexible stranded wire (11); fourthly, gas shieldwelding is conducted on the end portion of the lead-out flexible stranded wire (11) obtained in the third step so that the end portion can be melted into a whole; and fifthly, a brazing welding method is used for welding the end portion of the lead-out flexible stranded wire (11) obtained in the fourth step to the upper connecting portion of the starter shell assembly (2). By means of the scheme,the contact area and the welding firmness degree are improved, meanwhile, the problem that due to the fact that the connecting area is too small, the resistance is too large when currents pass, and astarter is burnt out is solved, and the service life of the starter is prolonged.

Description

technical field [0001] The invention relates to the technical field of starters, in particular to a connection process of a high-power starter stator coil lead-out flexible stranded wire. Background technique [0002] In addition to carrying its own gravity load, the generator lead wire also bears a strong vibration load when the generator is running, which requires high welding strength at the weld. During welding, the temperature at the bottom of the welding sink hole is not easy to control, and the pre-installed silver solder tabs are prone to uneven heating, resulting in defects such as unfusion and incomplete penetration. Defects such as pores are generated. [0003] The drive motor has the neutral point of the winding stator iron core and the three-phase lead-out line. The flame acetylene silver-copper welding process or the cold extrusion process is generally used. The flame acetylene silver-copper welding process has the following shortcomings: 1. The cost is high, ...

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problems in the prior art of welding asymmetry, easy cracks, and weak connection of lead-out wires, the present invention provides a high-power starter stator coil lead-out flexible stranded wire connection process, which is characterized in that it includes the following step:

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