onsdag 1. juli 2009

Bra om elbiler


 

What will the electric car look like in 2015? It will weigh around 1,000 kilograms. It will have a drag coefficient of 0.34, and its 40-kilowatt motor will be capable of speeds up to 120 kilometers per hour. In Germany today, the average distance covered each day by 90 percent of cars is under 80 kilometers. According to recent surveys, however, drivers want the electric car to have a minimum range of 200 kilometers. To make this possible, our electric car needs a battery with a capacity of 35-kilowatt hours.

Based on the technology we expect to be available in 2015, this battery will weigh 250 kilograms and cost around 12,000 euros, or 350 euros per kilowatt hour [US$495/kWh]. Depending on the design of the electric vehicle—how heavy it is, for example—and depending on how the lithium-ion battery develops, the cost of the battery may be slightly lower, at around 8,000 euros.

—Wolf-Henning Scheider