Cable for hybrid power vehicle

Abstract

The invention relates to a cable for a hybrid power vehicle, which comprises a conductor, an insulating layer and a sheath sequentially, wherein the insulating layer comprises a temperature-resistant insulating layer, a reinforced insulating layer and a bonded insulating layer, and the sheath comprises an inner sheath and an outer sheath. The cable of the invention overcomes the defects that the functions of the current cable can not meet the configuration requirements of vehicles for executing special tasks, the structure and the service life are unsatisfactory, and the like; the cable is suitable for electric power and signal transmission of various hybrid power engineering equipment, transport vehicles, new energy hybrid power vehicles and the vehicles for executing special tasks; and the cable can also be used for electric power and signal transmission of electrical equipment in high-temperature or special environments for ships, smelting, power generation, oil production, aerospace and the like.

Description

technical field [0001] The invention relates to a cable for a hybrid electric vehicle, in particular to a flexible cable for a hybrid electric vehicle with high and low temperature resistance. Background technique [0002] With the rapid development of national science and technology and economy, the demand for all kinds of hybrid vehicles and new energy vehicles used to perform special tasks such as emergency rescue and disaster relief, explosion prevention, fire prevention, and disaster prevention has increased. , High, especially the cables used by vehicles that perform special tasks require better security and stability for power transmission and signal transmission, more functions, and higher requirements for comprehensive indicators of configuration. [0003] The structure of power transmission and signal cables and wires currently used in vehicles is copper conductors coated with PVC or cross-linked polyethylene or polyvinyl chloride-butyronitrile composites as insula...

AI Technical Summary

Problems solved by technology

[0003] The structure of power transmission and signal cables and wires currently used in vehicles is copper conductors coated with PVC or cross-linked polyethylene or polyvinyl chloride-butyronitrile composites as insulation and sheath layers, which cannot meet various special tasks. The hybrid electric vehicles used in the cable have performance requirements such as high and low temperature resistance, wear resistance, oil resistance and flame resistance.

The long-term service temperature of wire and cable products made of PVC or polyvinyl chloride-nitrile composite insulation materials is only -20~105 0 Between C and easy to age, the materials used are likely to produce harmful gases due to product aging during use, such as dioxin and hydrogen chloride, which cannot meet environmental protection requirements; use cross-linked polyethylene as the insulation layer and sheath layer of the cable, and its operating temperature at -40~125 0 Between C, this kind of cable is cross-linked after the material is extruded. The cross-linking process is carried out under normal pressure. Bubbles are easily generated inside the material, or the residual charge inside the material is likely to affect the electrical properties of the product when irradiated. ; Two types of insulating materials at low temperature -40 0 Flexibility at C or high temperature 130 0 At C, the thermal aging performance is poor, and its chemical stability and wear resistance are average; the copper conductor can be oxidized at room temperature, and the oxidation speed is faster at high temperature or in a special environment. As the oxidation deepens, the electrical conductivity of the copper conductor decreases significantly. , the resistance of the conductor increases, and the heating of the conductor will accelerate the aging of the insulating material, thereby reducing the service life of the cable, especially in a vibration environment where insulation breakdown is prone to occur; and silicone rubber has poor tensile, tearing and extrusion properties. It is easy to be damaged and wrinkled in laying, moving and vibrating environments, and its excellent high and low temperature resistance and electrical insulation properties are difficult to exert in special environments

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