Modeling & Simulation of Li-ion Batteries
BatteryDict is the GeoDict module to generate electrode material models and simulate the charge of Li-ion batteries.
For the latter, the BEST solver (Battery and Electrochemistry Simulation Tool) of the Fraunhofer Institute for Industrial Mathematics, ITWM has been integrated into GeoDict. The charge curve at a user-chosen charging rate is obtained and compared to the corresponding equilibrium curve at a very slow charging rate. The curves are displayed in the simulation result summary.
BatteryDict also analyzes the microstructure of battery materials and shows inactive regions in material and electrolyte.
- BatteryDesigner - Battery modelling
- BESTmicro - Battery-charging simulation
Examples of Applications
- Checking for inactive material in the cell
- Running the simulations with several charge rates
- Estimating the efficiency of the battery by comparing the cell potential over state of charge to the open-circuit voltage
- Observing the changes in Li-ion concentration in each particle during charging
BatteryDesigner - Battery modelling
The BatteryDesigner produces battery materials with material models generated in GeoDict. The separation distance and the orientation of the electrodes can be specified to obtain the cell geometry, including the amount and location of all the components of the cell and the unconnected components, which reduce the energy density of the cell.
The following parameters and materials can be digitally defined and modified:
- Anode material
- Cathode material
- Current collectors on anode and cathode side
BESTmicro - Battery-charging simulation
GeoDict with BESTMicro is a user-friendly, easy-to-use bridge between the structures modelled with GeoDict and the testing of their performance using the feature-rich BESTMicro (Battery and Electrochemistry Simulation Tool). BESTMicro, already well known in the field of battery simulations, is being developed at the Fraunhofer ITWM for years.
- ConductoDict: BatteryDict kann den Solver von ConductoDict verwenden, um den Diffusionskoeffizienten innerhalb der Materialien zu bestimmen.
- GrainFind: kann nützlich sein, um die Korngrößen von Granulatstrukturen in den Batteriematerialien zu bestimmen.
- PoroDict und MatDict: könnten interessant sein, um die geometrischen Eigenschaften von Porenraum und Solids im Batteriemodell zu analysieren.