State of charge modeling of lithium-ion batteries using dual exponential functions

Ting Jung Kuo; Kung Yen Lee; Chien Kang Huang; Jau Horng Chen; Wei Li Chiu; Chih Fang Huang; Shuen De Wu

doi:10.1016/j.jpowsour.2016.03.021

State of charge modeling of lithium-ion batteries using dual exponential functions

Ting Jung Kuo
, Kung Yen Lee^*
, Chien Kang Huang
, Jau Horng Chen
, Wei Li Chiu
, Chih Fang Huang
, Shuen De Wu

^*Corresponding author for this work

Department of Mechatronic Engineering

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

A mathematical model is developed by fitting the discharging curve of LiFePO₄ batteries and used to investigate the relationship between the state of charge and the closed-circuit voltage. The proposed mathematical model consists of dual exponential terms and a constant term which can fit the characteristics of dual equivalent RC circuits closely, representing a LiFePO₄ battery. One exponential term presents the stable discharging behavior and the other one presents the unstable discharging behavior and the constant term presents the cut-off voltage.

Original language	English
Pages (from-to)	331-338
Number of pages	8
Journal	Journal of Power Sources
Volume	315
DOIs	https://doi.org/10.1016/j.jpowsour.2016.03.021
Publication status	Published - 2016 May 31

Keywords

Discharging behaviors
Exponential modeling
LiFePO batteries
State of charge

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2016.03.021

Cite this

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title = "State of charge modeling of lithium-ion batteries using dual exponential functions",

abstract = "A mathematical model is developed by fitting the discharging curve of LiFePO4 batteries and used to investigate the relationship between the state of charge and the closed-circuit voltage. The proposed mathematical model consists of dual exponential terms and a constant term which can fit the characteristics of dual equivalent RC circuits closely, representing a LiFePO4 battery. One exponential term presents the stable discharging behavior and the other one presents the unstable discharging behavior and the constant term presents the cut-off voltage.",

keywords = "Discharging behaviors, Exponential modeling, LiFePO batteries, State of charge",

author = "Kuo, \{Ting Jung\} and Lee, \{Kung Yen\} and Huang, \{Chien Kang\} and Chen, \{Jau Horng\} and Chiu, \{Wei Li\} and Huang, \{Chih Fang\} and Wu, \{Shuen De\}",

year = "2016",

month = may,

day = "31",

doi = "10.1016/j.jpowsour.2016.03.021",

language = "English",

volume = "315",

pages = "331--338",

journal = "Journal of Power Sources",

issn = "0378-7753",

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TY - JOUR

T1 - State of charge modeling of lithium-ion batteries using dual exponential functions

AU - Kuo, Ting Jung

AU - Lee, Kung Yen

AU - Huang, Chien Kang

AU - Chen, Jau Horng

AU - Chiu, Wei Li

AU - Huang, Chih Fang

AU - Wu, Shuen De

PY - 2016/5/31

Y1 - 2016/5/31

N2 - A mathematical model is developed by fitting the discharging curve of LiFePO4 batteries and used to investigate the relationship between the state of charge and the closed-circuit voltage. The proposed mathematical model consists of dual exponential terms and a constant term which can fit the characteristics of dual equivalent RC circuits closely, representing a LiFePO4 battery. One exponential term presents the stable discharging behavior and the other one presents the unstable discharging behavior and the constant term presents the cut-off voltage.

AB - A mathematical model is developed by fitting the discharging curve of LiFePO4 batteries and used to investigate the relationship between the state of charge and the closed-circuit voltage. The proposed mathematical model consists of dual exponential terms and a constant term which can fit the characteristics of dual equivalent RC circuits closely, representing a LiFePO4 battery. One exponential term presents the stable discharging behavior and the other one presents the unstable discharging behavior and the constant term presents the cut-off voltage.

KW - Discharging behaviors

KW - Exponential modeling

KW - LiFePO batteries

KW - State of charge

UR - https://www.scopus.com/pages/publications/84961700445

UR - https://www.scopus.com/pages/publications/84961700445#tab=citedBy

U2 - 10.1016/j.jpowsour.2016.03.021

DO - 10.1016/j.jpowsour.2016.03.021

M3 - Article

AN - SCOPUS:84961700445

SN - 0378-7753

VL - 315

SP - 331

EP - 338

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

State of charge modeling of lithium-ion batteries using dual exponential functions

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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