Integrated Equivalent Circuit and Thermal Model for Simulation of Temperature-Dependent LiFePO 4 Battery in Actual Embedded Application

Zuchang Gao, Cheng Siong Chin, Wai Lok Woo and Junbo Jia
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Zuchang Gao: School of Engineering, Temasek Polytechnic, 21 Tampines Avenue 1, Singapore 529757, Singapore
Cheng Siong Chin: School of Marine Science and Technology, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
Wai Lok Woo: School of Electrical and Electronic Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
Junbo Jia: School of Engineering, Temasek Polytechnic, 21 Tampines Avenue 1, Singapore 529757, Singapore

Energies, 2017, vol. 10, issue 1, 1-22

Abstract: A computational efficient battery pack model with thermal consideration is essential for simulation prototyping before real-time embedded implementation. The proposed model provides a coupled equivalent circuit and convective thermal model to determine the state-of-charge (SOC) and temperature of the LiFePO 4 battery working in a real environment. A cell balancing strategy applied to the proposed temperature-dependent battery model balanced the SOC of each cell to increase the lifespan of the battery. The simulation outputs are validated by a set of independent experimental data at a different temperature to ensure the model validity and reliability. The results show a root mean square (RMS) error of 1.5609 × 10 ?5 for the terminal voltage and the comparison between the simulation and experiment at various temperatures (from 5 °C to 45 °C) shows a maximum RMS error of 7.2078 × 10 ?5 .

Keywords: lithium-ion battery; battery management system; convective thermal model; cell model; state-of-charge (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (23)

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