The HealthBatt research project aims to improve the performance and safety of battery storage systems through an innovative multi-sensor approach.

Thus, a holistic stress profile for the battery is recorded that goes beyond conventional thermal and electrical measurement data. Various sensors, including humidity, pressure, and impedance sensors, are used to record the effects of mechanical stresses such as shocks and vibrations on the service life of the batteries.

The collected data is analyzed using intelligent methods to precisely determine the state of health (SoH) of the batteries and the remaining useful life (RUL). A traffic light system visualizes the current battery condition and supports proactive maintenance measures.

The Fraunhofer ISC collects data from mechanical stress and electrical tests, which serve as initial indicators of the internal cell state. To validate and correlate stress with aging effects, destructive post-mortem examinations of the cells are necessary. The heterogeneous data is organized in a semantic data space, stored systematically, and processed automatically for integration into aging models. This allows for a comprehensive analysis of the stresses and helps determine the condition of the battery system. The processed data is made machine-readable, serving as a foundation for extensive modeling and the derived status lamp system. The Fraunhofer ISC research team combines expertise from the institute's battery technology and analytics divisions as well as digitalization.

By validating and correlating stress and aging effects in combination with post-mortem examinations, valuable information about the condition of battery storage systems is gained. HealthBatt promotes sustainability by extending the lifespan of battery systems and minimizing resource consumption, leading to a reduced CO₂ footprint. Additionally, early detection of potential safety risks enhances the operational safety of the systems.

The project is conducted by a consortium of leading companies and research institutions, including VARTA Storage GmbH and Infineon Technologies, and has the potential to set new standards in battery monitoring and management.