Lithium-Ion Battery Parameter Identification via Extremum Seeking Considering Aging and Degradation

Sanz-Gorrachategui, Iván (Universidad de Zaragoza) ; Pastor-Flores, Pablo ; Bono-Nuez, Antonio (Universidad de Zaragoza) ; Ferrer-Sánchez, Cora ; Guillén-Asensio, Alejandro (Universidad de Zaragoza) ; Bernal-Ruiz, Carlos (Universidad de Zaragoza)

Resumen: Battery parameters such as State of Charge (SoC) and State of Health (SoH) are key to modern applications; thus, there is interest in developing robust algorithms for estimating them. Most of the techniques explored to this end rely on a battery model. As batteries age, their behavior starts differing from the models, so it is vital to update such models in order to be able to track battery behavior after some time in application. This paper presents a method for performing online battery parameter tracking by using the Extremum Seeking (ES) algorithm. This algorithm fits voltage waveforms by tuning the internal parameters of an estimation model and comparing the voltage output with the real battery. The goal is to estimate the electrical parameters of the battery model and to be able to obtain them even as batteries age, when the model behaves different than the cell. To this end, a simple battery model capable of capturing degradation and different tests have been proposed to replicate real application scenarios, and the performance of the ES algorithm in such scenarios has been measured. The results are positive, obtaining converging estimations both with new and aged batteries, with accurate outputs for the intended purpose.

Idioma: Inglés

DOI: 10.3390/en14227496

Año: 2021

Publicado en: Energies 14, 22 (2021), 7496
ISSN: 1996-1073

Factor impacto JCR: 3.252 (2021)

Categ. JCR: ENERGY & FUELS rank: 80 / 119 = 0.672 (2021) - Q3 - T3

Factor impacto CITESCORE: 5.0 - Engineering (Q1) - Mathematics (Q1) - Energy (Q2)

Factor impacto SCIMAGO: 0.653 - Energy (miscellaneous) (Q1) - Energy Engineering and Power Technology (Q1) - Fuel Technology (Q1) - Control and Optimization (Q1) - Engineering (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/RIS3-LMP16-18

Tipo y forma: Article (Published version)

Área (Departamento): Área Tecnología Electrónica (Dpto. Ingeniería Electrón.Com.)