News item | 2011-07-20 | 11:00 AM

Wireless charging solutions for electric vehicles

Whereas nowadays electric vehicles are typically recharged using cables, that won’t always be the case. “In three-to-five years, charging will be automatic and fully wireless,” says Johan Tollin, R&D Program Manager for E-Mobility.

Partners around the world

Vattenfall R&D Projects is partnering with various stakeholders to develop wireless, inductive charging systems for electric vehicles. Vattenfall has reached out to partners around the world to identify companies and technologies that could help to bring a product to market.

“In the future, we want people to drive electric vehicles,” Tollin says. “To get there it must become more convenient to own an electric vehicle. A wireless charging solution is one way of achieving this. Inductive charging offers a way to automate the charging process completely. In the future, there will be no need for charging posts or plug-in solutions.”

A typical inductive charging solution involves a metal plate being placed in the ground, for instance on a garage fore- court or on a parking area. When a car is parked over the plate, electricity is transferred from the plate to the car’s battery. Charging starts automatically and is fully wireless.

Wireless charging solutions

Vattenfall’s aim is to offer wireless charging solutions as part of our product portfolio.

“Our results are promising, but there are still some things that need to be solved,” Tollin says. “The automotive industry must agree on a common standard so that electric cars from any manufacturer can use it. The issue of electromagnetic fields is also important to control.”