COBRAPRO: A MATLAB toolbox for Physics-based Battery Modeling and Co-simulation Parameter Optimization

TL;DR

COBRAPRO is an open-source MATLAB toolbox that enables physics-based battery modeling and automatic parameter optimization using experimental data, improving battery behavior predictions across various scenarios.

Contribution

It introduces an integrated parameter calibration feature into a battery modeling toolbox, filling a gap in existing open-source tools.

Findings

Successfully calibrates battery models using experimental data

Provides accurate predictions of battery behavior across scenarios

Facilitates non-invasive parameter identification for various chemistries

Abstract

COBRAPRO is a new open-source physics-based battery modeling software with the capability to conduct closed-loop parameter optimization using experimental data. Physics-based battery models require systematic parameter calibration to accurately predict battery behavior across different usage scenarios. While parameter calibration is essential to predict the dynamic behavior of batteries, many existing open-source DFN modeling tools lack integrated parameter identification routines. COBRAPRO addresses this gap by featuring an embedded parameter optimization framework that optimizes the model parameters by minimizing the error between the simulated and experimentally observed current-voltage data. With COBRAPRO, users can non-invasively identify unknown battery model parameters for any given battery chemistry.