If you don't want to freeze in your electric car, you have to make a few concessions, because heating devours a substantial portion of power supply. Researchers from the Fraunhofer Institute in Germany will exhibit a demo model of a highly energy-efficient heating system for electric cars at the International Motor Show (IAA) in Frankfurt later in September: a coated film that produces a broad, radiant heat.
Electric car drivers now have one more reason to love the summer, because in the winter, the vehicle's range declines markedly due to the additional energy demanded by the heating system. Electric cars generate next to no heat as opposed to conventional passenger vehicles, which produce more than enough engine heat to heat the interior. An additional electric heater is required. This is supplied with power by the same battery that provides the engine with energy. "In the most unfavorable case, you can only drive half the usual distance with the car", says Serhat Sahakalkan, project manager at the Fraunhofer Institute for Manufacturing Engineering and Automation IPA in Stuttgart.