What is CellMod?
Based on a first order electrochemical model, CellMod is packaged as a Functional Mockup Unit (FMU), allowing it to be easily integrated into most major simulation packages, such as Altair Activate®, via the open industry standard Functional Mockup Interface (FMI). CellMod FMU accepts as input current, ambient temperature, and time-step and will output voltage, cell internal temperature, state of charge (SOC), and any other cell internal state variable.
Unlike simple equivalent circuit (EC) models often used today, CellMod FMU takes into account physical processes happening inside the cells, such diffusion in solids, diffusion in electrolytic solution, reaction kinetics, charge transport, heat transport, and more. As a result, CellMod can predict future battery cell behavior with a high degree of accuracy.
The default battery model for CellMod is the Panasonic 18650A. This version may be used as a stand to represent a generic Li-ion battery, providing better accuracy that what can be offered by a simple equivalent circuit model. For design teams requiring a high level of accuracy (~97% or accuracy to the level of statistical variation), cell-specific versions to represent any type of Li-ion cells – from NMC and LMO to LFP and NCA, and all iterations of these cells – can be quickly developed using easy to perform experiments. No special knowledge of the cell is required.
CellMod Overview Video