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Integrated Equivalent Circuit and Thermal Model for Simulation of Temperature-Dependent LiFePO₄ Battery in Actual Embedded Application

Lookup NU author(s): Professor Cheng Chin, Dr Wai Lok Woo

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

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 LiFePO₄ 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.

Publication metadata

Author(s): Gao ZC, Chin CS, Woo WL, Jia JB

Publication type: Article

Publication status: Published

Journal: Energies

Year: 2017

Volume: 10

Issue: 1

Pages: 85-85

Print publication date: 11/01/2017

Online publication date: 11/01/2017

Acceptance date: 04/01/2017

Date deposited: 26/01/2017

ISSN (electronic): 1996-1073

Publisher: MDPIAG

URL: http://dx.doi.org/10.3390/en10010085

DOI: 10.3390/en10010085

Notes: Special Issue Control of Energy Storage

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