State of charge modeling of lithium-ion batteries using dual exponential functions

Kuo, Ting Jung; Lee, Kung‐Yen; Huang, Chien Kang; Chen, Jau Horng; Chiu, Wei Li; Huang, Chun‐Sheng; Wu, Shuen De

doi:10.1016/j.jpowsour.2016.03.021

Cited by 14 publications

(6 citation statements)

References 18 publications

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“…is performed based on the life time of the battery with lowest quoting price. Estimates the requirement of firm frequency response of the U.K Grid [48]. Applications: National Grid Applications Investigation on lifetime and re-establishing the lithium ion battery state of the charge.…”

Section: Battery Storagementioning

confidence: 99%

A Bibliographical Survey on Integration of Hybrid Renewable Energy Sources with Diesel Generator and Storage System

Dharavath¹,

Raglend²,

Karthikeyan³

et al. 2018

JESTR

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The power consumption has increased enormously due to the intervention of high end technology and it is necessary to meet this power demand. The power pushed into any electrical system should be highly reliable, secured with sufficient quantity and quality. One such solution is to bring reliable and flexible power by introducing Hybrid energy systems into the network. The main motivation of hybrid energy systems is to improve the delivery of power at the utilities and customer end. In this paper, a complete literature review is made on the integration of solar photovoltaic, wind and diesel generator with energy storage systems like hydrogen based fuel cells and batteries. This hybrid system reduces the operating time of diesel generator, save the fuel consumption and hence accomplishes the peak demand with diesel generator.

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Section: Battery Storagementioning

confidence: 99%

A Bibliographical Survey on Integration of Hybrid Renewable Energy Sources with Diesel Generator and Storage System

Dharavath¹,

Raglend²,

Karthikeyan³

et al. 2018

JESTR

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“…However, under variable working conditions, such as different temperatures, depths of discharge, charging and discharging rates, and numbers of cycles, the aging of the battery would speed up, leading to error in estimating the battery strength. Much research has been conducted to investigate the mechanisms of battery aging [5][6][7][8][9]. However, it is still a major challenge to quantify these factors' influence on battery performance.…”

Section: Introductionmentioning

confidence: 99%

Development of a Comprehensive Model for the Coulombic Efficiency and Capacity Fade of LiFePO4 Batteries under Different Aging Conditions

Kuo

2019

Applied Sciences

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In this paper, a comprehensive model for LiFePO4 batteries is proposed to ensure high efficiency and safe operation. The proposed model has a direct correlation between its parameters and the electrochemical principles to estimate the state of charge (SoC) and the remaining capacity of the LiFePO4 battery. This model was based on a modified Thévenin circuit, Butler–Volmer kinetics, the Arrhenius equation, Peukert’s law, and a back propagation neural network (BPNN), which can be divided into two parts. The first part can be represented by the dual exponential terms, responsive to the Coulomb efficiency; the second part can be described by the BPNN, estimating the remaining capacity. The model successfully estimates the SoC of the batteries that were tested with an error of 1.55%. The results suggest that the model is able to accurately estimate the SoC and the remaining capacity in various environments (discharging C rates and temperatures).

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“…A novel thermoelectric model was investigated, 42 attracting a great protection circuit progress. 45 It was also investigated by using the dual exponential function 46 and the impact on the Open Circuit Voltage (OCV) tests were conducted. 43 The discrete wavelet transform-based feature extraction was analyzed for the lithium-ion battery consistency by using the experimental voltage signals.…”

Section: Introductionmentioning

confidence: 99%

“…44 The real-time SOC estimation method was conducted in the thermal storage vessels and applied to the smart polygene ration grid. 45 It was also investigated by using the dual exponential function 46 and the impact on the Open Circuit Voltage (OCV) tests were conducted. 47 The temperature-compensated models were conducted by using the Extended Kalman Filter (EKF), which were used as the implantable charger.…”

Section: Introductionmentioning

confidence: 99%

An improved packing equivalent circuit modeling method with the cell‐to‐cell consistency state evaluation of the internal connected lithium‐ion batteries

Wang

Shi

Fernandez

et al. 2019

Energy Science & Engineering

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The existing equivalent modeling methods reported in literature focuses mainly on the battery cells and do not take the packing consistency state into consideration, which exists on the internal connected cells of the lithium‐ion battery pack. An improved equivalent circuit model is constructed and reported in this manuscript for the first time, which can be used to characterize the working characteristics of the packing lithium‐ion batteries. A new equilibrium concept named as state of balance is proposed as well as the calculation process, which is realized by considering the real‐time detected internal battery cell voltages. In addition, this new equilibrium concept aims to obtain more information on the real‐time consistency characterization of the battery pack. The improved adaptive equivalent circuit model is investigated by using the improved splice modeling method, in which the statistical noise properties are corrected and the additional parallel resistance‐capacitance circuit is introduced. The parameter correction treatment is carried out by comparing the estimated and experimental detected closed circuit voltages. Furthermore, the tracking error is found to be 0.005 V and accounts for 0.119% of the nominal battery voltage. By taking the packing consistency state and temperature correction into consideration, the accurate working characteristic expression is realized in the improved equivalent circuit modeling process. Finally, the model proposed in this manuscript presents a great number of advantages compared to other methods reported so far, like has the high accuracy, and the ability to protect the security of the lithium‐ion battery pack in the power supply application.

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State of charge modeling of lithium-ion batteries using dual exponential functions

Cited by 14 publications

References 18 publications

A Bibliographical Survey on Integration of Hybrid Renewable Energy Sources with Diesel Generator and Storage System

A Bibliographical Survey on Integration of Hybrid Renewable Energy Sources with Diesel Generator and Storage System

Development of a Comprehensive Model for the Coulombic Efficiency and Capacity Fade of LiFePO4 Batteries under Different Aging Conditions

An improved packing equivalent circuit modeling method with the cell‐to‐cell consistency state evaluation of the internal connected lithium‐ion batteries

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