New energy vehicles-Thermal, Insulation & Structural Solutions

New energy vehicles

I. Power Battery System: Thermal Runaway Protection and Structural Insulation

Battery Pack Thermal Protection Yuefeng mica sheets and mica pads are used as the spacing layer between battery modules and inside the battery pack casing. Their high-temperature resistance (capable of withstanding instantaneous high temperatures above 800℃) effectively delays heat conduction and flame spread during battery thermal runaway, giving the whole vehicle thermal management system emergency response time. At the same time, the flame retardant properties of mica meet the UL94 V-0 standard, reducing the risk of battery ignition.

Cell and Module Insulation In the series-parallel structure of the cells, Yuefeng mica paper and mica film are used as insulating media to isolate the positive and negative electrodes from the metal support, with an insulation resistance of up to 10¹⁴Ω·cm or more, avoiding the risk of short circuits. Customized mica molded parts (such as shaped gaskets) adapt to different battery pack structures to ensure reliable insulation in compact spaces.

II. High-Voltage Wiring Harness and Connectors: Fire Prevention, Flame Retardancy, and Insulation Protection

High-voltage wiring harnesses (such as charging lines and power lines) for new energy vehicles must pass stringent fire tests. Yuefeng mica tape, as a wiring harness wrapping material, forms a ceramic insulating layer when subjected to flame burning, maintaining circuit continuity for more than 30 minutes (compliant with GB/T 19666 standard), and preventing high-voltage circuit failure in case of fire. In addition, mica insulation sleeves are used for connector plugs to isolate metal contacts from the shell and prevent insulation failure caused by moisture and vibration.

III. Vehicle Body Structure: Lightweight and Weather Resistance Adaptability

Yuefeng mica composite materials (such as mica-reinforced polypropylene) are used in structural parts such as battery pack lids and underbody shields. While meeting insulation requirements, they are more than 30% lighter than traditional metal materials, helping to reduce vehicle energy consumption. Their weather resistance can adapt to extreme temperature changes from -40℃ to 120℃, resisting erosion from rain, snow, and salt spray, ensuring structural stability during long-term use.

Through multiple applications in core components, Yuefeng mica provides key material support for the safety, efficiency, and durability of new energy vehicles, becoming an industry-recognized supplier of insulation and thermal protection solutions for new energy vehicles.