Introduction of charging cable materials for charging piles: characteristics of charging pile cable materials

2023/06/26
Author: EVCOME-EV Chargers Manufacturers

The charging pile cable acts as a bridge connecting the piles, and the performance of the charging pile cable is very important. In addition to the basic cable outdoor performance such as insulation and flame retardancy, the overall hardness of the cable should not be too high, because the cable should be bent frequently. The so-called charging pile cable generally refers to the elastomer-related materials used for the insulation layer and the sheath layer. Material properties require oil resistance, tear resistance, weather resistance, chemical resistance, high and low temperature resistance, and softness. TPU.TPE.PVC elastomers are currently more mainstream. TPU is characterized by high strength and good wear resistance, which cannot be replaced by other TPE materials. Wear resistance of TPU. The strength properties are much better than TPE, but the feel is not as good as TPE. At present, the softest hardness of TPU is about 55A. The main features of TPU are: a wide range of hardness, with the increase of hardness, its products still maintain good elasticity and wear resistance. High mechanical strength, outstanding cold resistance, good processing performance, oil resistance, water resistance, mold resistance, and good recyclability. Compared with TPU, TPE has a greater loss of elasticity at high hardness. The abbreviation of the English name Thermoplasticlastomer of TPE refers to thermoplastic elastomer, which is a special functional material with plasticity and rubber elasticity. Thermoplastic elastomer TPE has the characteristics of high rubber elasticity, high strength, high resilience, injection molding processing, environmental protection, non-toxic, safe, wide range of hardness, excellent coloring performance, soft touch, weather resistance, fatigue resistance, temperature resistance, etc. As people's awareness of environmental protection continues to increase, EU ROSH standards, REACH regulations and other related environmental regulations have been gradually implemented in the electronics and electrical fields. Thermoplastic flame-retardant wires and cables must be used in many occasions, and TPE halogen-free flame-retardant cable materials with plastic and rubber properties have become the focus of research and development. The TPE material based on SEBS, through the addition of a large amount of inorganic flame retardants to improve the flame retardancy, is prone to low strength, easy precipitation, poor resilience, poor weather resistance and fatigue resistance, dripping, and large smoke. The reduction of these comprehensive properties affects the service life and operation safety of the product, and limits the application of low-smoke, halogen-free and flame-retardant TPE materials in the field of electronic and electrical connecting wires, especially for new energy charging pile cable materials. At present, polyvinyl chloride is mostly used as insulation and protection materials for automotive wiring harnesses at temperatures below 105°C. PVC materials often have disadvantages such as poor extrusion surface and poor low temperature performance in domestic automobile wiring harnesses. In view of this, coupled with the special environment used in automotive wiring harnesses (such as narrow space, poor environmental heat dissipation, frequent mutual friction, etc.), special requirements (thin walls, high-speed extrusion) and cost control requirements, it is necessary to study the use of polychloride in automotive wiring harnesses. Vinyl material to further enhance its performance. With the rapid growth of electric vehicle sales, new energy vehicle charging pile companies hope to share the 100 billion yuan market. Charging piles may be the most certain cake in the new energy vehicle industry chain. Charging piles also appear in charging piles. Slow charging is generally AC charging, and DC charging current is relatively large, which has higher requirements on the power facilities of the community. The characteristics of the charging pile cable are as follows: 1. The cable should have the characteristics of high voltage resistance, high temperature resistance, electromagnetic interference resistance, stable signal transmission, oil resistance, water resistance, acid and alkali resistance, and ultraviolet resistance during the charging process. 2. The concentricity of the product is good, so that the cable's high-voltage resistance performance is stable and reliable. 3. The minimum bending of the product is 4D, which is convenient for use between corners in narrow spaces. The product has high flexibility and is very convenient for vehicle wiring. 4. The rated temperature of the product is 125°C, which is a great technological progress and improvement for the one-time molding flexible insulating material, and is very important for ensuring the flexibility of the cable and improving the current-carrying capacity of the cable. New energy charging cables generally use TPE material as cable insulation, the cable is soft, feels good, and the bending radius is less than 5D; oil resistance, acid and alkali resistance, water resistance, abrasion resistance, abrasion resistance, crack resistance, UV resistance, stable color; resistance Flammable bending more than 50,000 times; all materials are RoHS compliant&The latest environmental protection standard of REACH. .

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