Complex traction battery model
The outcome type of a Other (O category) – number TN02000054//003-V10, of the project “Božek Vehicle Engineering National Competence Center (BOVENAC),” funded by TA CR.
The outcome is a configurable electrical simulation platform for traction battery packs, capable of representing virtually any cell interconnection architecture (series/parallel groupings, modules, and parallel strings). The platform supports both identical-cell simulations and cell-resolved modelling to capture cell-to-cell variability caused by manufacturing tolerances and operational ageing. Individual cells are described by SOC-, temperature-, and SOH-dependent equivalent circuit models (OCV source, series resistance, and two RC branches), with optional inclusion of busbar and joint resistances. A simplified Battery Management System (BMS) model is integrated to represent operational limits, balancing behavior, permitted disbalance, and voltage-dependent self-consumption, enabling realistic assessment of pack behavior under dynamic current profiles.
For dissemination and direct use, a MATLAB-based application with an English graphical user interface is provided, including predefined profiles (e.g., WLTC, DDP), import of custom cell/BMS models, and export of results. In utilization, the platform supports model-based development and model-in-the-loop workflows. It is suitable for comparing cells across chemistries and manufacturers, developing and calibrating BMS algorithms, predicting cell behavior over lifetime, and performing vehicle-level design optimization; it is also applicable beyond automotive to other lithium-ion-based electrochemical power sources, with expected reductions in early SW development and calibration effort for key battery functions.
License: Use for non-commercial purposes is free of charge. For commercial use or any further use of the configurable battery pack model, please contact MSc. Václav Knap, Ph.D. (vaclav.knap@cvut.cz).
Download: PackSim_v1.1 – zip file containing installation files for use within MATLAB (.mlappinstall) and without MATLAB (.exe), and readme file.
Manual available here.
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