Recharging Technologies

Battery Bus with Fast Charging Capacity

Fully Electric Public Transport

The electric bus with fast charging capacity combines state-of-the-art technologies in order to facilitate fully electric driving in regular service. The bus is recharged in a matter of seconds during regular stops using an especially developed contact system. Highly efficient battery technology and control systems round off the overall system.

Underfloor Charging Technology

Automated Fast Charging

In order to achieve a high vehicle range, large amounts of energy have to be transferred in short periods of time – similar to the standard refueling process. The Fraunhofer IVI has developed a fully automated, reliable and safe charging system for this application scenario that overcomes the performance restrictions of conventional plug-and-cable combinations. With the help of this technology, it will be possible to execute a fully automated charging process from positioning to billing in the future.

 

High Current Energy Transmission System for Public Transport Vehicles

Safe and High-Performance Recharging

The operation of electrically driven public transport vehicles can help reduce the CO2 emissions in cities. However, supplying these vehicles with energy is problematic: Catenaries for trams and trolley buses are expensive and interfere with the existing city scape. In order to avoid catenaries, a recharging system is needed that is able to quickly and safely transmit energy to the on-board storage units.

Route Implementation for Electric Buses

Consulting Service for the Implementation of Fully Electric City Buses

Many public transport providers want to or have to integrate electric buses into their vehicle fleets in the near future. However, not all routes are equally suited for an integration. With the help of especially developed analysis tools, the Fraunhofer IVI is able to identify all suited routes within a given network and to formulate a detailed implementation plan.

Development and Testing of Core Technologies for Plug-In Hybrid Buses

What is currently impeding the overall introduction of electromobility in public transport is the lack of an area-covering network of charging stations as well as the still very limited range of fully-electric vehicles. The project SaxHybridPLUS is developing and testing core technologies for plug-in hybrid buses in order to level out the disadvantages of today’s electric vehicles by using a hybrid approach.

Project Website

»DockingPrinciple«

Comprehensive Concept for the Energy Supply of Public Transport Vehicles

In order for electromobility to firmly establish itself in public transport, it needs to be able to compete with conventional systems economically. The »DockingPrinciple« combines charging infrastructure installed along roads with on-board energy storage units and a predictive energy management system so that electric buses and trams can be operated efficiently.

Energy and Power Demand of Public Transport Vehicles

Dimensioning Storage Units on the Basis of Measuring Data Analyses

A part of the energy contained in electric vehicle systems can be recuperated. In order for this to happen, the recuperated energy either has to be stored or it has to be supplied to a consumer connected to the grid. A vehicle storage unit can only be dimensioned in an optimal way after a variety of different parameters have been analyzed.

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Support for the Registration of Vehicles and Vehicle Components

Functional Safety and Compliance With Standards

Newly designed and constructed vehicles need a registration according to the ECE Regulations in order to be eligible for operation in general traffic. In addition, compliance with standards of functional safety needs to be ensured. The Fraunhofer IVI supports its clients in all relevant steps of the registration process, starting with the system definition and ending with the acceptance.

Investigation of Galvanic High Current Contacts

Optimal Materials and Configurations for Electromobility

In the next few years, the percentage of electric vehicles in road traffic will increase steadily. One important prerequisite for this development is a fast recharging option for the vehicles’ on-board energy storage units. Fast charging processes put a high strain on the components and materials involved. The Fraunhofer IVI studies high current transmission processes on their own test stand in order to design reliable, high-performance contact configurations.