https://scholars.lib.ntu.edu.tw/handle/123456789/486675
標題: | Identification of the parameters in equivalent circuit model of lithium-ion batteries | 作者: | Chang, M.T. Lin, Y.S. Ling, S.H. Liang, S.H. Lin, C.H. Chen, K.C. KUO-CHING CHEN |
公開日期: | 2014 | 卷: | 61 | 期: | 27 | 起(迄)頁: | 125-130 | 來源出版物: | ECS Transactions | 摘要: | A typical impedance spectrum of the lithium-ion cell is composed of two partially overlapped semicircles and a straight line at low frequency end. The overlapped semicircles make the parameters of the two RC circuit in equivalent circuit model of lithium-ion battery hard to be discriminated. To correctly obtain the parameters of the two RC circuit, it is necessary to find a method to distinguish Rct from Rsei. It is found that the charge transfer resistance Rct can be determined from the expression, Rct = RT/i0nF, where the exchange current density i0 is evaluated by the electrochemical model simulation, and R and T respectively denote the gas constant and the Kelvin temperature. As soon as Rct is achieved, the curve fitting of the impedance spectrum helps us to obtain the other seven parameters. © The Electrochemical Society. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/486675 | DOI: | 10.1149/06127.0125ecst | SDG/關鍵字: | Charge transfer; Circuit simulation; Circuit theory; Curve fitting; Electric batteries; Ions; Lithium; Lithium alloys; Lithium compounds; Charge transfer resistance; Electrochemical modeling; Equivalent circuit model; Exchange current densities; Identification of the parameters; Impedance spectrum; Kelvin temperatures; Lithium-ion cells; Lithium-ion batteries |
顯示於: | 應用力學研究所 |
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