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Textiles are are up to 50% lighter than corresponding components made of plastic
May 10, 2019
By: Tara Olivo
Associate Editor at Nonwovens Industry
With battery undercovers made of Ultra-Silent, Autoneum has adapted this textile underbody technology for use in electric vehicles for the first time. The components act as insulators helping to lower sound that enters the passenger cabin, for instance caused by tires, and also pass-by noise. Sound-reducing components are essential for electric models as well because external and internal sources such as fans, pumps and electronic drive components are more audible due to the lack of engine noise and accordingly influence driving comfort. At the same time, the textile battery undercovers also convince thanks to their low weight: They are up to 50% lighter than corresponding components made of plastic and thus ensure a greater driving range. Undercovers made of Ultra-Silent are installed underneath the battery casing, providing the battery cells with the best possible protection against significant cooling or heating and ensuring a constant temperature with a correspondingly optimized battery capacity. As a result, the components help to improve battery performance. They are also resistant to water, stone chipping and vibrations and thus help to protect the battery casing. In order to calibrate the temperature resistance and material stiffness of undercovers, Autoneum uses a broad range of internally developed simulation tools. They are deployed in both the development phase of new electric models as well as in the further development of those already on sale. Lightweight components made of Ultra-Silent are mostly made from recycled PET fibers that can be fully reclaimed, making them particularly environmentally-friendly. Components made of Ultra-Silent are produced in the company’s plants in Sevelen, Switzerland, Gundernhausen, Germany, Jeffersonville, IN, USA, and Pinghu, China, and are already in use in models of European, U.S. and Chinese automobile manufacturers. From July 2020 onwards, the first battery undercovers will be produced in series at the Gundernhausen plant for the fully-electric model of a German premium manufacturer.
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