Funded by: Federal Ministry for Economic Affairs and Climate Action (BMWK)
Contact Person: Alexander Hahn, Marcel Schrader
Summary of the project:
The steadily increasing demands on the range of electric vehicles result in an increasing energy density of the active materials. One of the biggest challenges remains to ensure the same level of safety.
The main objective of the SimDural project is to develop a simulation-based workflow for the safety assessment of uncontrolled thermal runaway in aged battery cells. For this purpose, cells will be manufactured and electrochemically aged in a controlled manner and will be investigated post-mortem as part of the research project. Reaction equations, reaction kinetics, electrolyte evaporation and short-circuit mechanisms will be modeled for the targeted simulations. A combination of molecular-level, particle-level, electrode-level (discrete element method), and continuum calculations with electrochemical and thermodynamic models will be used. Experiments to parameterize these models will include pouch cells, and a test device to determine gas products will also be developed. Abuse cases will be simulated using a proprietary physical model of the full cell and a multi-physics 3D model with homogenized electrode layers. An important part of the project is the multiple validation of the simulation-based workflow using cells in different aging states.
The consortium sets as a common goal that the developed workflow, consisting of an intelligent combination of experiments and simulations, can be performed within 3 months. This means that the workflow can be used, among other things, at an early stage of the development process to optimize cell design.
Tasks and targets of the iPAT:
Project partners: