Conductive connection method of motor coil

Abstract

The invention relates to a conductive connection method of a motor coil. The motor coil comprises a power line and an enameled wire wound on a motor stator; and the conductor of the power line is a copper wire, and the conductor of the enameled wire is an aluminum wire. The copper wire is divided into an integral copper wire harness and a plurality of scattered copper wires, the integral copper wire harness and an aluminum wire are rotationally wound to form a copper-aluminum wound wire harness, the scattered copper wires are used for wrapping and winding the surface of the copper-aluminum wound wire harness to form a copper-aluminum wrapped wire harness, and then an opening in the lower end of a copper sleeve is used for fixedly clamping and pressing the copper-aluminum wrapped wire harness, a cavity is formed in the copper sleeve, a tin liquid flows into the copper sleeve, air in the copper sleeve is exhausted, welding between the copper sleeve and the copper-aluminum wrapped wire harness is completed, the copper-aluminum wrapped wire harness located in the copper sleeve is in a vacuum state, the aluminum wire is prevented from being exposed, the problem that the aluminum wire is easy to cut off or is oxidized due to contact with external air is reduced, and the conductive connection stability and the service life between the copper wire and the aluminum wire are improved.

Description

technical field [0001] The invention relates to a conductive connection method for motor coils. Background technique [0002] During the production of the motor, the enameled wire of the stator coil needs to be connected with the external power line after being wound. Among them, the conductor of the enameled wire of the stator coil and the conductor of the power line are usually copper wires. Since both are copper wires, the production cost Very high. In order to reduce the production cost, the manufacturer will replace the enameled wire conductor material of the stator coil with aluminum wire. Although it can reduce the production cost, when the enameled wire of the stator coil is connected with the power wire, the overlapping winding method is usually adopted, that is, the enameled wire is first 1. Remove the insulating layer on the surface of the conductor of the power line, so that the conductors of the two are exposed respectively, and then the exposed conductors of t...

AI Technical Summary

Problems solved by technology

In order to reduce the production cost, the manufacturer will replace the enameled wire conductor material of the stator coil with aluminum wire. Although it can reduce the production cost, when the enameled wire of the stator coil is connected with the power wire, the overlapping winding method is usually adopted, that is, the enameled wire is first 1. Remove the insulating layer on the surface of the conductor of the power line, so that the conductors of the two are exposed separately, and then the exposed conductors of the two are overlapped with each other, and finally rotated and wound, so as to complete the docking of the enameled wire of the stator coil and the power cord. The butt connection method is easy to cause the aluminum wire conductor to be exposed, and the exposed aluminum wire conductor is easy to cut off, or contact with the outside air to cause oxidation, resulting in short circuit of the motor and failure to work, poor stability and short life