What are the performance requirements of flame-retardant plastics used in new energy vehicles?

Jan. 01, 70

In recent years, in the context of the blowout development of new energy vehicles, some new energy vehicles have successively suffered fire and explosion accidents of lithium batteries. This is worthy of our alert to the safety of these new energy batteries. Although these accidents have a certain degree of particularity, the safety of new energy vehicles is worth paying attention to.

Burning new energy vehicle

Different from plastics used in fuel vehicles, plastics used in new energy vehicles often need to work at higher voltages, currents and electrical power, which requires plastic materials to have better flame retardant and electrical properties. At present, the core of plastic applications for new energy vehicles is mainly concentrated in the fields of motors (coils, controller housings), battery packs (battery housings), and automotive electronics.

215-新能源汽车塑料应用

Application of New Energy Automobile Plastics

The specific performance requirements of new energy vehicles for flame-retardant plastic materials mainly include the following four aspects:

1. Flame retardant performance

UL94: V0/V2

Glowing wire test 30s 750/850℃

Ball compression hardness test 75/125℃

2. Thermomechanical properties

-40℃-85℃

Vibration, thermal shock, mechanical shock

3. Resistant to chemical contact

Water, salt

Electrolyte

Lubricant, dust

4. Electrical performance

Electrical insulation strength (>4KV)

Leakage prevention (>250V)