one New energy cable Of Main technical performance
Through market research and analysis and according to the relevant technical requirements proposed by customers, the cables for charging devices of new energy vehicles developed have the following technical properties: （ 1) Insulation and outer sheath made of flame-retardant, efficient and environmentally friendly materials.
（ 2) Excellent waterproof, acid and alkali resistance, oil resistance: the insulation and sheath of the cable are made of tpv and tpu, which have good acid and alkali resistance, excellent corrosion resistance to polar oil, and strong resistance to acid and alkali cleaners, so that the cable can maintain its original characteristics after long-term use in acid and alkali environments.
（ 3) Environmentally friendly, low smoke and halogen-free performance.
2. Cable structure and material selection
two point one new energy product mix
two point two new energy Selection of cable materials
（ 1) Copper core flexible conductor is used for conductor cable, and the conductor shall comply with the provisions of the sixth conductor in GB/T3956-2008 standard.
（ 2) High quality thermoplastic special compound vulcanized rubber tpv material is used for insulation. This material has excellent electrical performance, elasticity and compression deformation resistance, which can make the cable soft, oil and water resistant, high and low temperature resistant, and environmental friendly.
（ 3) The shielding of insulated core of shielded cable shall be composed of sub shielding, general shielding and aluminum plastic composite tape.
（ 4) The power, control, data signals and safety protection wires are twisted into cables.
（ 5) The outer sheath of the outer sheath shall be extruded with environment-friendly halogen-free low smoke flame retardant radiation cross-linked sheath material. The extruded sheath layer shall be smooth and round without quality defects such as scorch, scratch and bubble.
3. New energy Outstanding innovation points of cable
（ a) New structure: power cable, control cable, data signal cable and safety protection wire are integrated in the cable structure. By Locomotive cable The research on the structure and use of the power, control, data signal and safety protection line of the power, control, data signal and safety protection line is the first time to put forward a design structure that integrates power, control, data signal and safety protection line, solves the problem of the original single wire core, and obtains a practical new type of zhuanli.
（ b) New process. The shielding structure solves the electromagnetic interference in technology. Through tackling the key problem of braided copper wire shielding layer, the preparation of copper wire shielding technology for power, control, data signal and safety protection line is proposed for the first time, which solves the signal interference problem of power, control, data signal and safety protection line, and obtains a practical new-type zhuanli.
（ c) New material application Through the research on the insulation performance, environmental protection performance, temperature resistance and oil resistance of cables for locomotives, composite polymer materials are used for the first time to solve the problems of poor volume resistivity, low dielectric strength, poor environmental protection performance and temperature resistance and oil resistance of cables, so that its volume resistivity reaches 1016 ω/cm and dielectric strength reaches 28mv/m. A practical new type of zhuanli is obtained. Through the research on the release of toxic hydrogen chloride gas from chloroprene rubber, the technology of environmental protection (low smoke, zero halogen, low toxicity) in line with rohs standards, temperature resistance of - 60 ℃~150 ℃, and oil resistance retention rate of 70% was proposed for the first time, which solved the toxicity, smoke, and halogen of toxic hydrogen chloride gas released from chloroprene rubber. The utility model of zhuanli has the problems of temperature resistance of - 45 ℃~100 ℃ and oil resistance of 40%.
Conclusion: This product synthesizes the relatively new achievements in domestic scientific research. It is mainly used for AC single-phase, power frequency and rated voltage cables for charging devices of new energy vehicles For 1 kv environment-friendly locomotive; This product has good flame retardancy, high and low temperature resistance, acid and alkali resistance, softness, environmental protection and other properties. Its comprehensive environmental protection function is comprehensive and powerful, the product is compact, easy to lay, and has strong practicability. It leads the domestic market and fills the vacancy of this project in China.
