UL Launches Battery Enclosure Material Screening Lab in Japan

Battery enclosures are a crucial component in ensuring the safety of electric vehicle (EV) occupants, especially in the event of a battery fire or thermal runaway. The materials used in these enclosures play a vital role in protecting individuals and preventing potential hazards. With the opening of the new Ise BEMS Laboratory in Japan, UL Solutions is expanding its capabilities to support regional customers in advancing battery enclosure research and development.

Hidehiko Yamajo, regional vice president of Japan at UL Solutions, highlighted the importance of investing in lighter batteries to enhance EV range while prioritizing occupant safety. The automotive industry is constantly evolving, and manufacturers are striving to remain competitive by developing innovative solutions that meet safety standards. The new laboratory in Japan is well-equipped to assist global manufacturers in overcoming challenges and shaping the future of mobility.

Electric vehicle batteries are typically located at the base of the vehicle, making it essential for the materials used in battery enclosures to undergo rigorous testing. Thermal runaway, a potential chain reaction in lithium-ion batteries, can lead to fire, smoke, and high temperatures if not properly contained. UL Solutions' BEMS offerings, including the Battery Enclosure Thermal Runaway (BETR) evaluations, are designed to assess the performance of materials under such extreme conditions.

The introduction of the new BEMS laboratory is set to revolutionize the automotive industry's approach to EV safety. By conducting BETR evaluations and utilizing the UL Solutions Torch and Grit (TaG) test method, the laboratory will enable manufacturers to enhance the protective capabilities of battery enclosures. This innovative approach will not only streamline testing processes but also contribute to the development of safer and more efficient battery technologies.

Through simulations of thermal runaway scenarios and the evaluation of material performance, the BETR testing method offers a cost-effective solution for resin manufacturers and material suppliers. By comparing material plaques to the entire battery assembly using lithium-ion battery cells, the laboratory can provide valuable insights that drive advancements in battery enclosure design. Additionally, the TaG test method assesses materials based on their ability to withstand high temperatures and mechanical impact stresses, further enhancing the safety standards for EV batteries.