Probability distributed equivalent circuit model - Data

General information

Measurement data, parameter and analytical functions for the simulation of the results described in the publication "A physically motivated hysteresis model for lithium-ion batteries using a probability distributed equivalent circuit" published in Nature Communications Engineering in 2024 by Jahn et al. 

Matlab Code for the simulation can be found under:

www.doi.org/10.5281/zenodo.10852695

File description

_incrOCV.csv

Measurement: Full cycle with current interupts at specific states of charge. 

Data: nx2 vector [Q U] with Q being the currently stored amount of charge in the cell and U being the voltage measured 

_pOCV.csv

Measurement: C/20 constant current full cycle starting at fully discharge state.

Data: nx3 vector [t Q U] with t being the recorded time, Q the amount of charge stored in the cell, and U the measured terminal voltage.

HysPowerTest_ ... _SOC50.csv / HysPowerTest_ ... _SOC100.csv

Measurement: SOC50 - starting at 0 % SOC with C/2 constant current charge to 50 % SOC followed by a 4C constant current discharge to the lower cut-off voltage. SOC100 - starting at 100 % SOC with C/2 constant current discharge to 50 % SOC followed by a 4C constant current discharge to the lower cut-off voltage. 

Data: nx4 vector [t Q I U] with t being the recorded time, Q the amount of charge stored in the cell, I the current flowing, and U the measured terminal voltage.

Hysteresis_SOC50Loops_ ... 

Measurement: Partial cycles with widening SOC window in 5 % steps in higher and lower SOC direction. The first hysteresis loop is measured from 45 % SOC to 55 % SOC while the final loop is measured from 0 % SOC to 100 % SOC.

Data: 9x5 Matlab struct with each row being a partial cycle. Each column corresponds to [t SOC U I Q] of this partial cycle. t being the recorded time, SOC the amount of stored charge referenced to the previously determined cell capacity, Q the amount of charge stored in the cell, I the current flowing, and U the measured terminal voltage.

Parameter sets

Parameter sets for the Matlab code for the simulation of the probability distributed equivalent circuit model, available under Zenodo repository given in the Related Works section.

param_ocpn_graphite.mat - OCP function parameter for the graphite anode half-cell20230221_graphite_opt_parameter_man - optimized model parameter for the graphite half-cellparam_ocpn_lfp.mat - OCP function parameter for the LFP cathode half-cell20230221_lfp_opt_parameter_man.mat - optimized model parameter for the LFP half-cellA123_parameter_posPulse/A123_parameter_negPulse - parameter of the R-RC ECM extracted using positive or negative pulses respectively