Large Battery Storage

Fotomontage aus Fotos beider batteriespeicher. Lithium-Ionen-Batterie links in einem Trafohäuschen, Redox-Flow-Großspeicher rechts in einem zweistöckigen Containerbau.
Energy from renewable sources must be stored with low losses to make it available when it is needed. Efficient energy storage is the goal of the research team.

Lithium-ion batteries have found their way into our everyday lives. Large-scale storage systems based on lithium-ion technology, however, have been unexplored for a long time. This changed with the construction of the storage facility at the Energy Lab 2.0 with its 600 modules, each of them as big as a shoebox, on which the optimal energy storage and energy supply can be researched.
Since lithium-ion batteries are very efficient short-term storage devices, at short notice, they can be used to bridge weather-related fluctuations in the production of solar or wind energy.
In contrast, the redox flow battery - also known as a flow battery - is very well suited as a long-term, but less efficient energy storage device. The researchers analyse, evaluate and optimise the interaction between these two battery systems. In doing so, they primarily use the electric current from the nearby photovoltaic field.