Battery2Life: Battery Management system and System design for stationary energy storage with 2nd Life batteries

- Start: 01/01/2024
- End: 31/12/2026
- Budget: 4.008.064,66 € (Project) & 572.863 € (CIDETEC)


- CIDETEC Energy Storage (CID)
- Austrian Institute of Technology (AIT)
- Etelätär Innovation (ETE)
- MIBA Battery Systems (MIBA)
- Public Power Corporation (PPC)
- Asociación Española de Normalización (UNE)
Centre Suisse d' Electronique et de Microtechnique (CSEM)
École Polytechnique Fédérale de Lausanne (EPFL)


The project:

Battery2Life will facilitate the smooth transition of batteries to 2nd life use and boost the innovation of the European Battery Industry by providing enablers to implement open adaptable smart BMSes and improved system designs and proposing methods for the efficient and reliable reconfiguration of used batteries.

Battery2Life introduces two new battery system design frameworks serving the upcoming market needs: the first supports the business transition for the initial market by restructuring existing battery design patterns while the second one introduces completely new design principles for 1st and 2nd life of the battery. A completely new BMS design mentality is introduced to the battery industry by delivering an open and interoperable hybrid BMS architecture (with an Embedded and a Cloud section) leading the transition from technology-driven BMS designs, to serve the needs of specific applications and battery technologies, to new data-driven and application-agnostic BMS designs, that can be easily adapted and updated to serve the requirements of different battery technologies and any 2nd life battery stationary storage application. Furthermore, Battery2Life introduces innovative embedded sensing and more accurate SOX estimation algorithms, new SOX indicators appropriate for 2nd life use -i.e. SOS (safety) and SOW (warranty) - and a new EIS implementation approach by integrating it in the BMS, that will enable the detailed safety and reliability monitoring at both cell and module level during 1st and 2nd life usage.

The project will specify an open BMS concept, data formats, taking into account and extending the battery passport concept, and interoperable communication via the cloud platform to third parties including the future passport exchange system, to facilitate monitoring and assessment. The project prototypes will be demonstrated within the context of two business cases, i.e. domestic storage application and utility-scale load levelling one.

CIDETEC'S role in the project:

CIDETEC Energy Storage is the technical manager of the project and leader of one WP. CIDETEC will asses 2nd life energy storage applications through the development of a self-developed sizing tool, which will consider techno-economical parameters to ensure that the selected chemistry, sizing and BS exploitation is reliable in the short- and long-term use of each site; and a data driven predictive advanced diagnostic tool, which will diagnose the RUL of the batteries. In addition, the development and validation of open source BMS algorithms will be carried out. SOX estimators will be developed, mainly SOW and SOS fed by early detection of risk phenomena. For this purpose, thermal runaway (TRA) and lithium – plating tests at cell level will be conducted, covering both fresh and aged cells. This way, CIDETEC will be able to contribute to the selection criteria of the modules valid for 2nd life depending on the EV 1st life application and stationary 2nd life application, as well as the commissioning of used batteries.