Application Characteristics of High Voltage Cable Materials for New Energy Vehicles

China [CN]

As the high-voltage cables of electric passenger vehicles meet the requirements of high voltage and large current, anti electromagnetic interference and wear resistance and flame retardancy, the performance of these materials is compared:

A. LSZH can be divided into two categories: PO (polyolefin) and EPR (ethylene propylene rubber), of which PO cable material is the mainstream. The formula of PO LSZH flame retardant cable compound contains a large number of AI (OH) 3 and Mg (OH) 2 inorganic flame retardants, which makes the cable compound have good flame retardant, low smoke, halogen-free, low toxicity and other characteristics, but also makes it different from other non flame retardant materials and halogen-containing flame retardant materials in physical and mechanical properties, electrical properties, extrusion process performance and other aspects.

b. TPE is a polymer material with the characteristics of both rubber and thermoplastic plastic. It shows the high elasticity of rubber at room temperature and can be plasticized at high temperature. However, the material is not wear-resistant and cannot meet the use requirements of high-voltage wire harness for electric passenger vehicles.

c. XLPE is made of ordinary PE (polyethylene) materials with a temperature resistance grade of 75 ℃ after radiation crosslinking. Its temperature resistance grade can reach 150 ℃, and it has excellent physical and mechanical properties, overload resistance and long life, but it is not flame retardant.

d. Silicon rubber has high breakdown voltage, so it has arc resistance, leakage trace resistance and ozone resistance. It also has good high and low temperature resistance, high temperature resistance up to 200 ℃, good insulation performance, stable performance and flame retardant under high temperature and high humidity conditions. After comparing the properties of the above materials, silicone rubber has become the first choice of high-voltage cable insulation materials for electric passenger vehicles because of its good physical and mechanical properties, long service life, low price and other advantages. The structure of the high-voltage cable of the electric passenger car in the final design.

Would you like to know more about our electric vehicle product line? You can get more information in our high-voltage cable leaflet.  https://www.omgevcable.com/mtbd/403.html