The recent launch of large-scale electric vehicle production at Renault's Maubeuge and Douai factories in northern France brought with it the use of a seemingly simple paste that represents a breakthrough in battery heat management.
It is a paste developed by DuPont that diverts heat from higher-density batteries during both charging and vehicle operation. It may look simple, but the polyurethane substance is an innovation in cooling, and the result of a drive in R&D investment by the materials supplier, said Tina Wu, global vice president for advanced solutions at DuPont Mobility & Materials.
"No OEM has more than 10 years of experience making batteries," Wu told Automotive News. "Everyone is learning together. Every OEM has different designs for batteries with different engineering teams and a different approaches.