In-vehicle high-voltage cable of new energy electric vehicle and preparation method thereof

Abstract

The invention discloses an in-vehicle high-voltage cable of a new energy electric vehicle and a preparation method thereof. The in-vehicle high-voltage cable comprises a conductor arranged in the cable. The conductor is formed by twisting multiple layers of stranded wires. The stranded wires are formed by twisting multiple tinned copper wires, and the wire twisting direction is opposite to the twisting direction of the stranded wires. The wire twisting pitch diameter ratio is controlled within 20 to 25 times. A high-tear-resistant mixed silicone rubber insulating layer resistant to high temperature of 180 DEG C is extruded outside the conductor. A first high-temperature-resistant isolating layer is wrapped outside the high-tear-resistant mixed silicone rubber insulating layer resistant tohigh temperature of 180 DEG C. A shielding layer which can also be used as a negative wire core is wound outside the first high-temperature-resistant isolating layer in a sparse winding mode. A secondhigh-temperature-resistant isolating layer is wound outside the shielding layer. A high-tear-resistant mixed silicone rubber sheath layer which can resist high temperature of 180 DEG C is extruded outside the second high-temperature-resistant isolating layer. The cable has the advantages of large transmission capacity, high temperature resistance, flexibility, tear resistance, bending resistance,cracking resistance and good solvent corrosion resistance.

Description

technical field [0001] The invention relates to a new type of high-voltage cable in a new energy electric vehicle and a preparation method thereof, which is mainly used for connecting lines of a high voltage power system in a new energy electric vehicle with a rated voltage of DC1500V / AC1000 and below. Background technique [0002] With the rapid development of my country's economy and the improvement of people's living standards, cars have gradually become common products and have entered thousands of households. It can be expected that in the near future, more and more families will own cars, and some families will even own more than two cars. Due to the rapid increase of traditional gasoline vehicles, the problem of air pollution caused by exhaust emissions is becoming more and more serious. New energy electric vehicles have developed rapidly due to their energy saving and environmental protection. In recent years, with the breakthrough of the technical bottleneck of new ...

AI Technical Summary

Problems solved by technology

As an important supporting product for new energy electric vehicles, high-voltage cables in the car have developed rapidly in recent years and their performance has been continuously improved. However, there are still problems such as heavy weight of the cable body, poor flexibility and bending performance, cracking, and high temperature resistance.

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