WEINHEIM, Germany—As electric vehicles continue to bring on more powerful batteries, Freudenberg-NOK Sealing Technologies is working on new technological approaches to help battery cells keep cool.
One of those safety components involves a low-weight and volume silicone rubber heat shield meant for lithium battery systems, said Peter Kritzer, senior applications manager for E-mobility with Freudenberg.
The product is one component developed in response to trends with original equipment manufacturers for battery systems that will increase the driving range for electric vehicles, Kritzer said. OEMs found ways to increase the energy density inside battery cells, packing more chemical energy in the same cell volume. Individual cells also are stored tightly together to maximize the energy density of the system.
Battery systems need to support ultra-fast charging, with OEMs looking for a complete system charge within 10-15 minutes, Kritzer said. That pushes a high amount of energy into the system, creating a safety issue with thermal management.