New life for used batteries
3. December 2018
The "Second Life" project, which is part of the Green Energy Lab, deals with the reuse of already used batteries from electric mobility. Second-life rechargeable batteries are combined into larger, stationary power storage units and are then used for peak shaving and for self-current optimization in the industrial sector. As a pilot project, a large-scale storage facility will be built and tested at two locations. This storage system will be operated on the basis of second-life batteries.
System for using used batteries of electric vehicles as stationary energy storage.
The project “Second Life” deals with the development of battery storage systems from old e-car batteries. These storage systems are particularly important in view of the growing share of decentralized, generated by fluctuating renewable energy sources and the integration into the power grid.
Isolated SecondLife batteries are already connected to power distribution networks. These ensure that the frequency maintenance control power is guaranteed, ensuring that the customer is provided with exactly the amount of electrical power they need. When smoothing load peaks in power consumption, also called peak shaving, or energy recovery in an industrial context, the storage system is not yet tested. For this reason, the project also includes building and testing large-scale storage for these applications.
Developing technical and market-relevant components is also part of the project. These include a portable rapid analysis device for determining the state of health of a battery, a tool for comprehensive residual value determination, an automatic memory dimensioning and a benchmarking performance indicator system, which provides recommendations for reusability. These components make the most of the potential of SecondLife battery systems.
More information about the Green Energy Lab (German).
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