In the future, more and more electric cars are likely to compete for charging power. Researchers are therefore developing more powerful tank systems for private underground garages and parking spaces.
As the number of electric cars increases, charging with normal household electricity is reaching the limit. If too many vehicles are connected to the network at the same time - for example in a private underground car park after work - there is a risk of peak loads. The Karlsruhe Institute of Technology (KIT) therefore wants to develop a new type of charging system.
Instead of the normal household electricity, the station of the future will be connected directly to the medium-voltage network. This is where the stronger direct current flows, which can also be refueled more quickly by most electric cars than the alternating current otherwise used in private and semi-public areas. The grid connection is flanked by a stationary buffer battery, which is filled by a photovoltaic system during the day.
The charging system is scalable and will now be tested in the laboratory in a variant with ten charging places. The buffer battery stores 50 kilowatt hours, the solar system has 100 kilowatts. The measurement data from the demonstrator should provide practical experience for setting up and operating the charging infrastructure.
