Experimentally-Determined Models for High-Power Lithium Batteries

Ceraolo, Massimo; Lutzemberger, Giovanni; Huria, Tarun

doi:10.4271/2011-01-1365

Cited by 45 publications

(29 citation statements)

References 13 publications

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“…The application of the experimental data to the model (the parameters estimation) can be performed with the use of various methods, such as curve fitting using MATLAB R (The MathWorks Inc., Natick, MA, USA) functions [1]. Estimation of the model parameters is performed using pulse charging or discharging experimental tests [1][2][3][4][5][6][7][8][9]. In [2], the impact of the temperature was additionally taken into consideration, although it is not in the scope of this paper.…”

Section: Introductionmentioning

confidence: 99%

Li-NMC Batteries Model Evaluation with Experimental Data for Electric Vehicle Application

et al. 2018

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Abstract:The aim of the paper is to present the battery equivalent circuit for electric vehicle application. Moreover, the model described below is dedicated to lithium-ion types of batteries. The purpose of this paper is to introduce an efficient and transparent method to develop a battery equivalent circuit model. Battery modeling requires, depending on the chosen method, either significant calculations or a highly developed mathematical model for optimization. The model is evaluated in comparison to the real data measurements, to present the performance of the method. Battery measurements based on charge/discharge tests at a fixed C-rate are presented to show the relation of the output voltage profiles with the battery state of charge. The pulse discharge test is presented to obtain the electric parameters of the battery equivalent circuit model, using a Thévenin circuit. According to the Reverse Trike Ecologic Electric Vehicle (VEECO RT) characteristics used as a case study in this work, new values for vehicle autonomy and battery pack volume based on lithium nickel manganese cobalt oxide cells are evaluated.

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Section: Introductionmentioning

confidence: 99%

Li-NMC Batteries Model Evaluation with Experimental Data for Electric Vehicle Application

et al. 2018

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“…The ECM (equivalent circuit model) approach uses the circuit elements to represent the electrochemical phenomena inside the battery to avoid the lengthy electrochemical process calculation while still capturing the dynamic performance of the battery [24,25]. In general, an ECM with one or two Resistance-Capacitance (RC) blocks without the parasitic branch is a common choice and for the batteries that have an obvious hysteresis phenomenon, a hysteresis model is also included [26].…”

Section: Battery Equivalent Circuit Modelmentioning

confidence: 99%

Research on the Optimal Charging Strategy for Li-Ion Batteries Based on Multi-Objective Optimization

Min

Sun

et al. 2017

Energies

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Abstract:Charging performance affects the commercial application of electric vehicles (EVs) significantly. This paper presents an optimal charging strategy for Li-ion batteries based on the voltage-based multistage constant current (VMCC) charging strategy. In order to satisfy the different charging demands of the EV users for charging time, charged capacity and energy loss, the multi-objective particle swarm optimization (MOPSO) algorithm is employed and the influences of charging stage number, charging cut-off voltage and weight factors of different charging goals are analyzed. Comparison experiments of the proposed charging strategy and the traditional normal and fast charging strategies are carried out. The experimental results demonstrate that the traditional normal and fast charging strategies can only satisfy a small range of EV users' charging demand well while the proposed charging strategy can satisfy the whole range of the charging demand well. The relative increase in charging performance of the proposed charging strategy can reach more than 80% when compared to the normal and fast charging dependently.

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“…However, such models normally contain groups of coupled partial differential equations which are difficult to solve and generally are not suitable for the control system [15][16][17][18][19][20]. As a compromise between accuracy and feasibility, the equivalent circuit models are adopted by many researchers [21][22][23][24][25][26]. The underlying dynamics is considered as an equivalent circuit which makes the models much simpler in structure, more suitable for on-board computation.…”

Section: Introductionmentioning

confidence: 99%