FST advances elastomer-based technologies for EV batteries

Detroit, Michigan – Freudenberg Sealing Technologies (FST) has introduced new polymer-based technologies for automotive batteries: launching three new products earlier this month.

Unveiled at the 2024 Battery Show, 7-10 Oct in Detroit, the seals manufacturer's developments include: advanced thermal barriers; prismatic battery cell caps; and prismatic envelopes for batteries.

At the event, FST showcased battery protective covers and mats, designed to contain thermal runaway and prevent thermal propagation throughout the battery.

According to the manufacturer, the barriers are made from “unique materials that withstand high-temperature venting gases, endure abrasive conditions, and offer electrical insulation.”

The new covers are an extension of FST’s 3D thermal barriers launched last year which are produced using "high-temperature resistant plastics and elastomers" to shield critical components.

Meanwhile, FST’s new battery cell cap has been designed with an elastomeric sealing to improve the performance and safety of prismatic and cylindrical battery cells.

Developed in collaboration with cell manufacturers, the custom-designed caps are produced on-site for the local market, said the FST statement.

The German-based company has also designed a drop-in cell envelope solution, which it says optimises battery performance.

The new design consists of nonwoven materials that wrap the cell stack films to enhance “efficiency, durability, and performance in cell manufacturing.”

The products can be used in passenger vehicles as well as trucks and buses, according to the industrial sealing specialist.