Their engineering partner EDAG developed a new technology for inductive charging of electric automobiles as part of the German Lane Charge initiative and submitted for a patent.
A critical aspect to remember is that, unlike prior systems, EDAG places charging intelligence in the car rather than on the road.
To recap, in 2019, the Lane Charge project was launched in Germany.
Researchers at Hannover University of Applied Sciences and Arts are developing a fully functional inductive charging system in collaboration with industry partners.
In the last phase of the initiative, two converted automobiles at a cab stand at Hanover Central Station will be wirelessly charged.
The power electronics are being developed by project partner EDAG, and the technology is being integrated into the vehicle.
This is where the new approach comes in, as far more charging system components are now installed in the automobile rather than on the road.
The new in-road technology is supposed to be easier to use and more reliable than previously.
As a result, installing the technology in the street or parking area will be more cost-effective, allowing energy providers and road operators to expand inductive charging infrastructure more quickly.
However, in order to achieve this, the charging power must be regulated in the car. According to EDAG, a single electrical component on the road may power many transmitter coils, with each vehicle controlling its own energy intake.
On the infrastructural side, this should not just be less expensive, but also safer.
“Previously, numerous transmitter coils could be connected to power electronics in the road via inductive methods.
They couldn’t be managed separately, though; instead, the power delivered across all the transmitter coils was oriented toward the vehicle with the smallest charge requirements,” explains Jochen Rohm, EDAG’s Embedded Systems Development Engineer.
“The disadvantages of this system are obvious: only one vehicle received the optimal charging power because each vehicle has its own charging requirements.
Furthermore, real-time communication, usually via WLAN, was required for regulation.”
He went on to say that the new technology reverses the roles.
The vehicle’s charging intelligence determines how much energy it gets from the transmitter coil on an individual basis.
As a result, multiple cars with varying charging needs can be optimally charged on a single roadside power electronics unit without the need for real-time communication.
Initial testing will take done at Hanover University of Applied Sciences, with real-world testing beginning in 2023 at Hanover Central Station, as previously announced.
Through the Electromobility Sponsoring Directive, handled by NOW GmbH, the Federal Ministry of Transport and Digital Infrastructure (BMVI) is funding the LaneCharge initiative with €2.77 million.