Overview of the modeling of lithium-ion batteries

doi:10.12028/j.issn.2095-4239.2018.0143

Abstract

Abstract: The models of lithium-ion batteries, including equivalent circuit models and electrochemical models, are reviewed. Models are used for the degradation mechanisms analysis, state estimation and life prediction of lithium ion batteries due to the time-effectiveness and applicability. The equivalent circuit models are more applicable for state of charge estimation and the electrochemical models are suitable for the degradation analysis and state of health estimation of lithium ion batteries. The simple and fixed model structure for equivalent circuit models and the complicated model structures and heavy computation for electrochemical models limit their application. The authors summarize the principles and structures of equivalent circuit models and electrochemical models. Then the application of these models is described and the merits and limitations of each model are elaborated. Then, based on the analysis mentioned above and the state-of-the-art modelling theory, the future research direction on more accurate and universal battery models is put forward.

Key words: lithium ion batteries, modeling, state diagnosis

CLC Number:

TM912

YANG Jie, WANG Ting, DU Chunyu, MIN Fanqi, Lyu Taolin, ZHANG Yixiao, YAN Liqin, XIE Jingying, YIN Geping. Overview of the modeling of lithium-ion batteries[J]. Energy Storage Science and Technology, 2019, 8(1): 58-64.

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