Anti-corona enameled wire applicable to new energy vehicles and manufacturing method thereof

Abstract

The invention discloses a corona-proof enameled wire for new energy automobiles and a manufacturing method of the corona-proof enameled wire. An insulating layer outside a conductor is coated with three insulating coatings from inside to outside, the outmost coating comprises a lubricating wear-resistant ingredient, a solvent and a base paint, the lubricating wear-resistant ingredient is a mixture of molybdenum disulfide, sea-foam stone powder, polytetrafluoroethylene, polyethylene wax and silicone oil, the solvent is a mixture of N-methyl pyrrolidone and dimethyl benzene, the base paint is a polyamideimide paint, and the thickness proportions of the three coatings are as follows: 15-25% of the inner coating, 60-70% of the intermediate coating and 15-17% of the outer coating. The static friction coefficient of the corona-proof enameled wire can be reduced, the effect in increasing the corona resistance of the corona-proof paint is good, and the corona-proof enameled wire is suitable for driving motors of the new energy automobiles.

Description

technical field [0001] The invention belongs to the technical field of enameled wire manufacturing, and in particular relates to an anti-corona enameled wire applicable to new energy vehicles and a manufacturing method thereof. Background technique [0002] At present, due to the high heat resistance and corona resistance characteristics of anti-corona enameled wire, it is widely used in the fields of industrial frequency conversion motors and automobile drive motors. For the structure of anti-corona enameled wire, please refer to the paper "Development and Mechanism of Anti-corona Enameled Wire" published by the author Luo Xin in the second issue of "Copper Industry Engineering" in 2012: the outer insulation layer of the conductor of the anti-corona enameled wire is usually Coated with three layers of insulating coating. Polyesterimide coatings are usually used for the inner coating, anti-corona coatings are used for the middle coating, and polyamideimide coatings are usua...

AI Technical Summary

Problems solved by technology

Coating a layer of self-lubricating paint on the outside of the anti-corona enameled wire can reduce the friction coefficient of the anti-corona enameled wire, but it is necessary to add another set of self-lubricating paint coating device to become a four-coat enameled wire, and the cost of equipment transformation is huge. It will inevitably increase the thickness of the coating, and it will inevitably reduce the thickness of the anti-corona coating under the premise of keeping the entire wire diameter unchanged, so that the total amount of anti-corona particles in the coating will decrease, and the anti-corona effect will decrease, so it cannot be applied to Where high corona resistance is required

For example, as the core component of new energy vehicles, the driving motor of new energy vehicles has high torque and high power density. technology requirements