How reliable are electrical energy storage systems?
Have you already developed a new battery system or are you already using one? However, are you lacking application-specific data for the planned use or do you need comprehensive information about performance and service life losses during operation? Do you see problems in the reliability and service life of your battery systems and the materials used in them?
We design and investigate the reliability of electrical energy storage systems for vehicles. Our numerical, hybrid, and experimental testing and validation facilities enable us to examine individual cells, cell modules, and the entire battery system as well as the drive train. With development-accompanying validation and an assessment of energy storage systems based on realistic operating conditions, we support research and development in optimizing HV energy storage systems in terms of energy density, capacity properties, and service life for the reliable provision of electrical energy in vehicles.
Realistic validation taking uncertainties into account
Statements on the system reliability of HV batteries in vehicles are particularly challenging due to the combination of mechanical, electrical, and thermal loads as well as environmental influences – also because the assessment of reliability must take uncertainties into account to a large extent. We therefore combine damage calculation hypotheses with reliability assessment methods and uncertainty quantification to develop new methods for evaluating the service life and reliability of HV batteries.
We develop test concepts tailored to specific requirements for the flexible, fast, and realistic implementation of system verification.
- Realistic (real-time) testing of traction storage systems in the laboratory (battery system)
- Electrical/dynamic testing of battery modules (electrical/thermal interactions – service life)
- Functional assessment of reliability and safety (FEM, FMEA, ProbFMEA)
- Multiphysical service life assessment of materials and add-on parts of the electrical energy storage system, such as cell connectors
To this end, we have extensive methodological knowledge and a modern laboratory environment at our disposal, including some test facilities that we have developed ourselves.