ev chargers enclosures best

What materials to choose to make charger enclosures protection shells?


SMC composite, as the most advanced and most popular shell manufacturing material in the world, has incomparable advantages over other non-metallic materials and metal materials. Thermosetting plastic SMC composite has the following advantages:


1, good electrical properties used to manufacture electrical products fiber reinforced polyester Ningbo Hua yuan SMC composite material has the following electrical properties: insulation resistance (immersion 24h): 1.0x10 M ω arc resistance: 180S creepage resistance index: ≥ 600V insulation protection and creepage resistance index in line with DIN/VDE related standards. This material not only has excellent electrical insulation but also can maintain good dielectric properties at high frequency, not by electromagnetic action, do not reflect electromagnetic waves. These properties are far beyond what metal materials can do.

2, chemical corrosion resistance fiber reinforced polyester Ningbo Huayuan SMC composite material has good acid resistance, dilute alkali, salt, organic solvents, seawater, and other corrosion properties, and metal materials are not acid resistant, corrosion resistance of sea water.


3, light high strength specific strength and specific modulus are one of the indicators to measure the bearing capacity of materials, fiber-reinforced polyester SMC composite specific modulus, and steel, but its specific strength can reach 4 times of steel.


4, good fatigue resistance fiber reinforced polyester Ningbo Huayuan SMC composite tensile strength is slightly better than steel, steel and most of the metal material fatigue limit is 40%-50% of its tensile strength, and fiber-reinforced composite fatigue limit is generally higher than this value, the highest can reach 70%-80%.


5. Notch sensitivity When the component is overloaded and a small number of fibers are broken, the load is rapidly distributed on the undamaged fibers to achieve mechanical balance. This cannot be compared with metal components.


6, low thermal conductivity, small expansion coefficient in the temperature difference produced by the thermal stress is much smaller than the metal.


7, excellent UV resistance and aging resistance in non-metallic materials, fiber-reinforced polyester SMC composite has excellent aging resistance. The anti-aging performance test shows that the maximum aging thickness of the surface is less than 50μm for 20 years in different places and different climatic zones. The minimum thickness of most boxes is 5mm, less than 1% of the box thickness, so there is no significant impact on the mechanical properties of the box.


8, long service life Of the European service history can prove that its service life is at least more than 20 years; The simulated aging test shows that its service life is more than 20 years, far more than traditional materials such as metal.


9, flame retardant, smokeless, non-toxic this material is a kind of flame retardant material, flame retardant grade FV0(non-metallic materials the highest), in high temperature burning smoke level 15 (smoke level 1-100), non-toxic smoke, toxicity level ZA1(quasi-safety level). The above SMC composite material has electrical insulation performance, mechanical properties, thermal stability, superior corrosion resistance, lightweight and easy engineering design, flexible and other advantages, so SMC composite material is one of the manufacturing materials of the EV chargers enclosures

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