Japanese Manufacturer Polyplastics Announces New Material for EV Lithium-Ion Batteries

Japanese manufacturer The Polyplastics Group (Polyplastics) has introduced a new high-performance material called DURAFIDE (R) PPS 6150T73, which offers improved heat resistance and thermal insulation properties for electric vehicle (EV) lithium-ion batteries. This material eliminates the need for inorganic insulative sheet structures to achieve enhanced thermal and electric insulation properties during thermal runway events.

EV battery fires can pose serious risks, as they are difficult to extinguish and can even reignite weeks after a fire has occurred. These fires are often caused by thermal runway, when a battery enters an uncontrollable self-heating state. During a thermal runaway event, a lithium-ion cell can reach temperatures of 800°C to 1,000°C.

To prevent thermal runaway and reduce energy transfer between cells, insulative sheets and plates have been used in the past. However, these components add weight and take up space in the battery pack.

Polyplastics’ DURAFIDE (R) PPS 6150T73 material not only provides greater heat resistance but also has optimal properties for components such as busbars and module covers. It maintains its insulation properties even when exposed to environments of 1,000°C for 30 minutes. This material is a significant development in improving the safety and performance of EV lithium-ion batteries.

– [Polyplastics Group](source1)
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