UrbanMobility2Grid

To date, second-life approaches for battery storage have primarily focused on large, homogeneous vehicle batteries. Micromobility batteries (e.g., from e-bikes and e-scooters), on the other hand, are highly heterogeneous and are usually recycled prematurely despite having significant remaining capacity. As a result, a growing resource potential remains largely untapped, while at the same time there is a lack of sustainable and cost-effective storage solutions for renewable energy.

The project is developing a modular stationary energy storage system that flexibly integrates heterogeneous second-life micromobility batteries. At its core are novel power electronic modules for the parallel connection of different batteries, as well as an enhanced safety concept to prevent thermal risks. Building on an existing demonstrator, these technologies will be scaled up to an industry-ready pilot system and validated under real-world operating conditions. Concurrently, technical, regulatory, and economic issues will be addressed to prepare for market readiness. 

The technology developed opens up new possibilities for resource-efficient energy storage solutions, particularly for commercial facilities with photovoltaic systems and high peak loads. Future applications are envisioned in decentralized energy systems, grid-supporting storage solutions, and service-based business models. Building on these results, follow-up projects on system scaling, standardization, and integration into real-world energy systems will be carried out to further advance industrial implementation.