The Influence of BMSs on the Characterization and Modeling of Series and Parallel Li-Ion Packs

Castaño-Solís, Sandra; Somoza, Blanca Castells; Gauchía, Lucía; Sanz, J.

doi:10.3390/en10030273

Cited by 22 publications

(11 citation statements)

References 25 publications

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“…Böylece empedans verilerinin yorumlanabilmesinin önü de açılmıştır. Ayrıca, modele dayalı empedans analizi ile farklı pil koşullarında batarya performansının ve pil kapasitesinin azalmasına neden olan mekanizmaların daha iyi anlaşılması amaçlanmaktadır [13,18,19]. Bununla birlikte bir eşdeğer devre modelinin tanımlanması şarj/deşarj süreçleri boyunca bataryada meydana gelen fiziksel olayları anlamak ve fayda durumunu değerlendirmek için kullanılacak yöntemlerin belirlenmesi için de önem taşımaktadır [21].…”

Section: Gi̇ri̇ş (Introduction)unclassified

“…Elektromanyetik etkilerden kaynaklanan indüktans (L) ise kHz ve daha yüksek frekanslarda gözlemlenebilmektedir [5]. Ancak, çoğu elektriksel uygulamanın yüksek frekansta gerçekleşmiyor olmasından dolayı indüktif davranış ihmal edilebilmektedir [18]. Böylece çeşitli frekanslarda pil ve pil sistemlerinin oluşturduğu batarya paketlerinde meydana gelen prosesler hakkında bilgi edinilebilmektedir.…”

Section: Gi̇ri̇ş (Introduction)unclassified

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18650 lityum-iyon ve 6HR61 nikel-metal hidrit tekrar şarj edilebilir pillerinin elektrokimyasal empedans analizi

Moralı¹,

Erol²

2019

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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Highlights:Graphical/Tabular Abstract  Comparison of the impedance response of batteries  Novel process model for impedance response of rechargeable batteries  Interpretation of battery dynamics by an equivalent circuit analysis Figure A. The graph on the left handside is the Nyquist plot of 18650 lithium-ion battery cell at the potential of 3.5 volts presenting impedance (EIS) data and Kramers-Kronig (K-K) fit with the indications and explanations of electrochemical properties of the cell. The picture on the top right shows the experimental setup. The scheme on the bottom right represents the equivalent circuit for rechargeable batteries; i.e., commercially obtained 18650 lithium-ion and 6HR61 nickel-metal hydride batteries.Purpose: The objective of this work is to analyze and model impedance of widely used rechargeable batteries which are 18650 cylindrical lithium-ion battery and 6HR61 nickel-metal hydride battery pack. Theory and Methods:The rechargeable batteries were charged or discharged by using a potentiostat connected to a desktop computer. The impedance analysis of the batteries was performed at the same conditions; such as, cell potential, frequency range, temperature, and ac perturbation. The impedance responses were interpreted through equivalent circuit modeling. Results:The impedance of nickel-metal hydride cell was much greater than that of lithium-ion cell. The fit of the developed model was successful for both batteries. The regressed parameters which are significant for energy storage systems were extracted from the obtained equivalent circuit elements. Conclusion:It was concluded that lithium-ion battery had many advantages compared to nickel-metal hydride battery in terms of capacity and performance. The used electrochemical impedance spectroscopy technique and the resulting model could be a potential candidate method for the improvement of non-commercial batteries and the ability to meet the energy needs.

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Section: Gi̇ri̇ş (Introduction)unclassified

18650 lityum-iyon ve 6HR61 nikel-metal hidrit tekrar şarj edilebilir pillerinin elektrokimyasal empedans analizi

Moralı¹,

Erol²

2019

Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi

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“…Li-ion battery-packs are modeled in the majority of the cases as an aggregation of individual cell models, neglecting the packaging effects of multicell devices, although some recent works have shown that considering the interactions between cells and BMS elements can improve the accuracy of the Li-ion battery-packs models [22,23]. Also, most battery models do not consider that battery modules can work at different dynamic regimes due to internal electrochemical processes that affect their transient behavior.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Modeling Procedure of Li-Ion Battery Modules for Reproducing Wide Frequency Applications in Electric Systems

Castaño-Solís¹,

Somoza²,

Fraile-Ardanuy³

et al. 2020

Research Trends and Challenges in Smart Grids

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In this chapter, a hybrid modeling procedure of Li-ion battery modules is presented. From experimental results, the parameters of an electrical circuit have been determined by means of time-and frequency-domain tests. In this way, the dynamic behavior of the battery-pack is modeled. The tests have been performed at the whole battery-pack, instead of a single-cell approach, in order to consider the packaging effects of multicell devices. The real performance of the battery-pack under dynamic applications associated with distribution grids has been simulated using a hardware-in-the-loop (HIL) experimental setup. According to simulation results, the hybrid model follows the battery-pack response with high accuracy.

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“…These frequency regions of the Nyquist plot provide information for ohmic resistance at high frequencies, charge transfer resistance and double layer capacitance at midfrequencies, diffusion of the ions through electrolyte/electrode interphase at low frequencies (Itagaki, Honda, Hoshi, & Shitanda, 2015). To obtain battery parameters, a model that simulates characteristics of a battery was applied to the EIS data (Castano-Solis, Serrano-Jimenez, Gauchia, & Sanz, 2017). The battery models are designed as an equivalent circuit consisting of various kinds of elements such as electrolyte resistances, capacitances, inductances, charge transfer resistances, constant phase elements, Warburg elements, and so on.…”

Section: Introductionmentioning

confidence: 99%

The Comparison of Electrochemical Impedance Behaviors of Lithium-Ion and Nickel-Metal Hydride Batteries at Different State-of-Charge Conditions

Moralı

Erol

2020

Eskişehir Osmangazi Üniversitesi Mühendislik Ve Mimarlık Fakültesi Dergisi

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Li-ion battery Ni-MH battery Impedance spectroscopy State of Charge Equivalent circuit model In this study, impedance responses of a lithium-ion battery and a nickel metal-hydride battery were analyzed as a function of different state of charge conditions. The physical parameters of these widely used rechargeable batteries have been extracted through an equivalent circuit model by fitting impedance data. The fit was excellent. The regressed parameters explain the battery physics and dynamics well. Results show that the developed model could be utilized for the broadly used rechargeable batteries at their operational potentials. The electrochemical impedance spectroscopy is a beneficial technique to provide information regarding battery life, battery performance, and state of health of a battery.

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The Influence of BMSs on the Characterization and Modeling of Series and Parallel Li-Ion Packs

Cited by 22 publications

References 25 publications

18650 lityum-iyon ve 6HR61 nikel-metal hidrit tekrar şarj edilebilir pillerinin elektrokimyasal empedans analizi

18650 lityum-iyon ve 6HR61 nikel-metal hidrit tekrar şarj edilebilir pillerinin elektrokimyasal empedans analizi

Hybrid Modeling Procedure of Li-Ion Battery Modules for Reproducing Wide Frequency Applications in Electric Systems

The Comparison of Electrochemical Impedance Behaviors of Lithium-Ion and Nickel-Metal Hydride Batteries at Different State-of-Charge Conditions

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