Modulare Hochleistungsbatteriesysteme in Verbindung mit Schnellladetechnik (MoBat) (Volume 75) (English shop)

Abschlussbericht

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The use of battery systems in vehicles for industrial applications and for the transport of people and goods, which requires a high degree of power and energy density, was the central subject of investigation in the project Modulare Hochleistungsbatteriesysteme in Verbindung mit sicherer Schnelladetechnik (MoBat). The impetus for the project presented in this report came, among other things, from the project Batterieelektrische Schwerlastfahrzeuge im „intelligenten“ Containerterminalbetrieb, completed in June 2016 and funded by the Federal Ministry for Economic Affairs and Energy (BMWi). The aim of that project was to equip a heavy-duty vehicle previously operated with lead-acid batteries with lithium batteries.

In order to enable the use of lithium batteries in the aforementioned fields, economically viable concepts must be considered in competition with existing solutions. To this end, an alternative concept in the field of passenger transport was examined from a business management perspective in MoBat. The idea of an alternative solution arises from the consideration of charging the vehicles with a very high current during short standstill periods in operation. This approach is generally referred to as opportunity charging. In contrast to this stands classic depot charging (also overnight charging), in which the respective vehicles are charged over a longer period after operation.

The technical prerequisites that must be considered for the implementation of such concepts constituted a central subject of the investigations. These include, for example, the fast charging of lithium batteries as well as the technical systems and prerequisites required for it. For the realisation of safe operation, the charging technology, sensor technology and the implementation in an overall system were investigated in the project. The consortium partners involved in the project funded by the BMWi were the Forschungszentrum für Energiespeichertechnologien of Technische Universität Clausthal, Fraunhofer Heinrich-Hertz-Institut, Schunk Transit Systems GmbH, Stöbich technology GmbH, Wolfsburg AG and AKASOL AG.