The principle of inductive energy transmission is already used in many households in the form of electric toothbrushes or induction hobs. In contrast to conventional wired charging, an inductive charging system allows energy to be transmitted via an air gap. If this principle is transferred to the charging of electric vehicles, charging columns become superfluous due to the elimination of charging cables. This makes it possible to rethink the charging process.
In this way, a barrier-free charging system could be set up at a taxi stand: There are no charging cables on the floor, which means there is no danger for passers-by. In addition, the taxis can move forward comfortably one after the other as usual without having to change the charging cables. The most important aspect, however, are the intermediate charges that the taxis can collect while waiting for new customers.
In addition to the additional costs of purchasing electric vehicles, taxi companies are mainly deterred by the short range. The advantages of intermediate charging are that no additional time is required for the charging process parallel to operation and that the batteries do not have to be dimensioned larger than necessary due to continuous charging.
The ecological advantage
What is ecologically interesting is that the taxi engine does not have to run either in summer or winter for a pleasant interior temperature. The energy required for air conditioning is drawn directly from the ground and can be used emission-free for cooling or heating.
In order to be able to present these effects in figures, a test track is being built at Hanover Central Station as part of the LaneCharge research project. Over almost the entire length of the taxi stand on Rundestraße, twelve transmitting coils will be integrated into the street in order to be able to evaluate the operation of electric taxis as an example. The coils embedded in the street avoid tripping hazards for pedestrians.
Under the leadership of the Hanover University of Applied Sciences and Arts, partners from business and industry are involved in this project: EDAG Engineering, TU Braunschweig and Sumida Components & Modules. In addition, the associated partners enercity, Götting, Hallo Taxi 3811 and the state capital Hannover are participating.
The project is funded by the Federal Ministry of Transport and Digital Infrastructure with a total of 3.7 million euros within the framework of the BMVI's Electromobility Funding Directive. The funding directive is coordinated by NOW and implemented by the project management organisation Jülich. Hannover University of Applied Sciences and Arts has a share of 1.1 million euros available for its sub-project.