The idea of supplying electric cars with electricity inductively while driving comes up again and again – and yes, it would solve many problems: less weight due to smaller possible batteries, fewer stops for energy reasons, simpler electrification of heavy goods traffic. However, the benefits have to be reasonable in relation to the costs (think of the structures of wireless charging of smartphones).
There have always been advances and tests for inductive charging while standing – last year, for example, by Volvo. The Friedrich-Alexander University of Erlangen-Nuremberg (FAU) is now investigating production methods for road construction that could bring the charging infrastructure into lanes at low cost. For this purpose, the project wants to equip a 1 km long lane of a motorway in northern Bavaria with the inductive power transmission system from Electreon. The test strip should be usable by 2025.
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Inductive charging: Technology on the motorway is quickly misplaced
The transmission capacity of the system should be up to about 70 kW. Electreon’s modular technology should be able to be rolled out over the planned kilometer in one night in asphalt milling – including the new road surface. It is still unclear which highway strip it will be. Autobahn GmbH will assign a lane to the project in 2024, the surface of which will have to be renovated anyway. Exactly such synergies are important if cost efficiency is to be achieved.
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