Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods

This paper proposes and evaluates the behavior of a new health indicator to estimate the capacity fade of lithium-ion batteries and their state of health (SOH). This health indicator is advantageous because it does not require the acquisition of data from full charge–discharge cycles, since it is ca...

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Main Authors: Joaquín de la Vega, Jordi-Roger Riba, Juan Antonio Ortega-Redondo
Format: Article
Language:English
Published: MDPI AG 2023-04-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/13/8/4938
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author Joaquín de la Vega
Jordi-Roger Riba
Juan Antonio Ortega-Redondo
author_facet Joaquín de la Vega
Jordi-Roger Riba
Juan Antonio Ortega-Redondo
author_sort Joaquín de la Vega
collection DOAJ
description This paper proposes and evaluates the behavior of a new health indicator to estimate the capacity fade of lithium-ion batteries and their state of health (SOH). This health indicator is advantageous because it does not require the acquisition of data from full charge–discharge cycles, since it is calculated within a narrow SOC interval where the voltage vs. SOC relationship is very linear and that is within the usual transit range for most practical charge and discharge cycles. As a result, only a small fraction of the data points of a full charge–discharge cycle are required, reducing storage and computational resources while providing accurate results. Finally, by using the battery model defined by the Nernst equation, the behavior of future charge–discharge cycles can be accurately predicted, as shown by the results presented in this paper. The proposed approach requires the application of appropriate signal processing techniques, from discrete wavelet filtering to prediction methods based on linear fitting and autoregressive integrated moving average algorithms.
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spelling doaj.art-37de8898e904468fa4b09e96dce4cf0b2023-11-17T18:11:23ZengMDPI AGApplied Sciences2076-34172023-04-01138493810.3390/app13084938Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing MethodsJoaquín de la Vega0Jordi-Roger Riba1Juan Antonio Ortega-Redondo2Electronics Engineering Department, Universitat Politècnica de Catalunya, 08034 Barcelona, SpainElectrical Engineering Department, Universitat Politècnica de Catalunya, 08034 Barcelona, SpainElectronics Engineering Department, Universitat Politècnica de Catalunya, 08034 Barcelona, SpainThis paper proposes and evaluates the behavior of a new health indicator to estimate the capacity fade of lithium-ion batteries and their state of health (SOH). This health indicator is advantageous because it does not require the acquisition of data from full charge–discharge cycles, since it is calculated within a narrow SOC interval where the voltage vs. SOC relationship is very linear and that is within the usual transit range for most practical charge and discharge cycles. As a result, only a small fraction of the data points of a full charge–discharge cycle are required, reducing storage and computational resources while providing accurate results. Finally, by using the battery model defined by the Nernst equation, the behavior of future charge–discharge cycles can be accurately predicted, as shown by the results presented in this paper. The proposed approach requires the application of appropriate signal processing techniques, from discrete wavelet filtering to prediction methods based on linear fitting and autoregressive integrated moving average algorithms.https://www.mdpi.com/2076-3417/13/8/4938batterycapacitydegradationhealth indicatorpredictionstate of charge
spellingShingle Joaquín de la Vega
Jordi-Roger Riba
Juan Antonio Ortega-Redondo
Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods
Applied Sciences
battery
capacity
degradation
health indicator
prediction
state of charge
title Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods
title_full Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods
title_fullStr Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods
title_full_unstemmed Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods
title_short Mathematical Modeling of Battery Degradation Based on Direct Measurements and Signal Processing Methods
title_sort mathematical modeling of battery degradation based on direct measurements and signal processing methods
topic battery
capacity
degradation
health indicator
prediction
state of charge
url https://www.mdpi.com/2076-3417/13/8/4938
work_keys_str_mv AT joaquindelavega mathematicalmodelingofbatterydegradationbasedondirectmeasurementsandsignalprocessingmethods
AT jordirogerriba mathematicalmodelingofbatterydegradationbasedondirectmeasurementsandsignalprocessingmethods
AT juanantonioortegaredondo mathematicalmodelingofbatterydegradationbasedondirectmeasurementsandsignalprocessingmethods