One focal point: the battery
By its very nature as the heart of the electric car, the battery is the focal point of the studies, which cover such topics as thermal management, capacity, package, weight, safety, service life and integration into the vehicle's heat and energy flows. "We are not working on cell chemistry - we are relying on our strategic partners for that," says Dr. Korte, "but the battery management software will be our know-how."
In an electric car, the entire on-board electrical system needs to be completely restructured. Many components that today use the energy and waste heat of the combustion engine - from the power steering to the heater - need a new source of power. The electric motor, the power electronics with their high-voltage components, inverters and transformers as well as the durability of the chips under the demanding conditions in the car are other important fields of work.
In addition - and this is what distinguishes the integrated approach - Audi is also studying all other areas of the vehicle. Topics include the flow of forces in the drivetrain, the climate control system, the controls and displays in the cockpit, the vehicle acoustics and the chassis. In this last field, electrically actuated brakes and suspension struts offer great potential.
The materials used in the car - which should be as lightweight as possible - and the entire package are another focal point. Electric motors are very compact and can also be placed at the wheels or the axles, but the batteries need their own space.
The young team keeps one important aspect in mind every step of the way: even an electric car has to be a true Audi with the strong character that all Audi models have in common. "We will draw on the bundled expertise of the entire company for the design and the lightweight body," says Dr. Korte, "and we are also committed to meeting the high Audi standard in terms of driving dynamics."
The bar is high - the three-year e-performance project scheduled to start on October 1 represents a major challenge. It is broken down into nine work packets, from energy storage to driving dynamics. In the initial phases, the participants will work in their various areas primarily using state-of-the-art simulation tools. The project will progress through the construction of sub-modules and test platforms to produce a drivable car.