The common flame retardant components of new energy vehicles
Many parts of the car will use flame retardant materials, especially new energy vehicles, the application of flame retardant materials is more extensive. Especially in charging piles and battery parts, plastic parts are required to be flame retardant. Today, let's take a look at the common flame retardant materials and corresponding components on automobiles.
Speaking of new energy vehicles, this is one of the hottest areas in recent years. For the material person, the most important thing is probably the application of new materials on the car. Compared with traditional cars, new energy vehicles have very different materials selection. For example, battery modules, charging piles, and charging guns must be made of flame-retardant materials. Let ’s take a look Look!
First, the charging gun
As a charging connector for electric vehicles, the charging gun is a "bridge" that connects charging facilities such as charging piles and electric vehicles. The quality of the gun directly affects the charging performance and safety. The material requirements of the charging gun are relatively high. Common materials are: PBT + GF, PA + GF, weather-resistant PC, etc.
Second, plug and socket
The material of the socket plug is mainly PBT-GF25 FR / PBT-GF30 FR, PA66-GF25 FR / PA66-GF30 FR and PA66-GF25 FR / PA66-GF30 FR (Free of halogen).
Third, the shell
The shell of charging pile is generally made of flame retardant PC material. The material features are halogen-free flame retardant, high surface gloss, excellent electrical insulation performance, and excellent mechanical properties.
Fourth, other components
There is currently no uniform material use standard for charging piles. By comparing the environmental requirements of charging piles with products from other industries, we recommend material solutions:
1. Power module case material-similar to power tool battery case-PA66 + FR material;
2. The internal cooling fan of the pile-PBT + GF or PPE + GF material, generally use axial flow fan blades;
3. Internal break control system of pile body-MCB or MCCB material-halogen-free flame retardant nylon material;
4. Metal isolation support inside the DC pile body-plastic instead of steel-ultra high glass fiber reinforced material or flame retardant reinforced nylon material.
Fifth, the battery module shell
Battery pack shells can generally be made of steel, aluminum alloy, SMC composite materials, carbon fiber reinforced composite materials, LGF-PP, PBT / ASA, etc.
Due to its good overall performance, plastic case is the main development direction of current battery case materials. For example, the series lithium batteries produced by companies such as Lei Tian, Huanyu, AVIC Lithium, Haiba, Qingshan and other companies are plastic cases. It is reported that in the power battery standard, the battery casing and the battery body are required to have a corresponding clear flame retardant requirement, and now more and more companies have begun to use flame retardant plastics for power batteries.
Sixth, automotive connectors
The basic requirements of connector materials: heat resistance and flame retardant! Connector contacts are metal, high mating times, and the material must have good flame resistance, heat resistance, and avoid fire. At present, common materials for connectors are PBT, PPS , PA, PPE, PET, etc.
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