Research on Estimation of State of Charge of Lithium-Ion Battery

Zhu, Wenqing; Ling, Chao; Yuan, Xiaodong; Shi, Mingming; Miao, Huiyu; Lu, Xiaotian

doi:10.1109/ispec53008.2021.9735651

Cited by 1 publication

(2 citation statements)

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“…The state space model is based on the battery model to establish the system state space expression, and the battery SOC is used as one of the state variables, and then the battery SOC is estimated through the filter or observer [94]. The main idea is to link the measured current, voltage, temperature and other variables with the battery SOC.…”

Section: Soc Estimation Methods Based On the State Space Battery Modelmentioning

confidence: 99%

“…The state space model is based on the battery model to establish the s space expression, and the battery SOC is used as one of the state variables, a battery SOC is estimated through the filter or observer [94]. The main idea i measured current, voltage, temperature and other variables with the battery S these measurables as the input of the model, the error between the predicted terminal voltage output by the model and the actual sampled value of the term is obtained.…”

Section: Soc Estimation Methods Based On the State Space Battery Modelmentioning

confidence: 99%

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Review on the Battery Model and SOC Estimation Method

et al. 2021

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The accuracy of the power battery model and SOC estimation directly affects the vehicle energy management control strategy and the performance of the electric vehicle, which is of great significance to the efficient management of the battery and the improvement of the reliability of the vehicle. Based on the research of domestic and foreign battery models and the previous results of SOC estimation, this paper classifies power battery models into electrochemical mechanism models, equivalent circuit models and data-driven models. This paper analyzes the advantages and disadvantages of various battery models and current research progress. According to the choice of battery model, the previous research results of the power battery SOC estimation method are divided into three categories: the direct measurement method not based on battery model, the estimation method using black box battery model, and the battery model SOC estimation method based on state space. This paper will summarize and analyze the principles, applicable scenarios and research progress of the three categories of estimation algorithms aiming to provide references for future in-depth research. Finally, in view of the shortcomings of the battery model and estimation algorithm of the existing method, the future improvement direction is proposed.

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Section: Soc Estimation Methods Based On the State Space Battery Modelmentioning

confidence: 99%

Section: Soc Estimation Methods Based On the State Space Battery Modelmentioning

confidence: 99%