Equalization control strategy and SOC estimation for LiFePO4 battery pack

Fei Feng; Kai Song; Rengui Lu; Guo Wei; Chunbo Zhu

Equalization control strategy and SOC estimation for LiFePO₄ battery pack

School of Electrical Engineering and Automation

Harbin Institute of Technology

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

57 Scopus citations

Abstract

Due to the different temperature gradients and coulomb efficiencies, the remaining capacity between cells will be inconsistencies, which results in the decrease of the capacity of battery pack. In order to improve the performance of battery pack, an equalization control strategy, which is based on t-SOC decision and k-SOC control, is proposed. Moreover, SOC algorithm of battery pack at balanced/unbalanced state is proposed. Finally, the accuracy of SOC estimation has been verified at balanced/unbalanced state. The results indicate that our method can provide effective equalization.

Original language	English
Pages (from-to)	22-29
Number of pages	8
Journal	Diangong Jishu Xuebao/Transactions of China Electrotechnical Society
Volume	30
Issue number	1
State	Published - 5 Jan 2015

Keywords

Battery pack
Equalization control strategy
LiFePO
SOC estimation

Cite this

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title = "Equalization control strategy and SOC estimation for LiFePO4 battery pack",

abstract = "Due to the different temperature gradients and coulomb efficiencies, the remaining capacity between cells will be inconsistencies, which results in the decrease of the capacity of battery pack. In order to improve the performance of battery pack, an equalization control strategy, which is based on t-SOC decision and k-SOC control, is proposed. Moreover, SOC algorithm of battery pack at balanced/unbalanced state is proposed. Finally, the accuracy of SOC estimation has been verified at balanced/unbalanced state. The results indicate that our method can provide effective equalization.",

keywords = "Battery pack, Equalization control strategy, LiFePO, SOC estimation",

author = "Fei Feng and Kai Song and Rengui Lu and Guo Wei and Chunbo Zhu",

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T1 - Equalization control strategy and SOC estimation for LiFePO4 battery pack

AU - Feng, Fei

AU - Song, Kai

AU - Lu, Rengui

AU - Wei, Guo

AU - Zhu, Chunbo

PY - 2015/1/5

Y1 - 2015/1/5

N2 - Due to the different temperature gradients and coulomb efficiencies, the remaining capacity between cells will be inconsistencies, which results in the decrease of the capacity of battery pack. In order to improve the performance of battery pack, an equalization control strategy, which is based on t-SOC decision and k-SOC control, is proposed. Moreover, SOC algorithm of battery pack at balanced/unbalanced state is proposed. Finally, the accuracy of SOC estimation has been verified at balanced/unbalanced state. The results indicate that our method can provide effective equalization.

AB - Due to the different temperature gradients and coulomb efficiencies, the remaining capacity between cells will be inconsistencies, which results in the decrease of the capacity of battery pack. In order to improve the performance of battery pack, an equalization control strategy, which is based on t-SOC decision and k-SOC control, is proposed. Moreover, SOC algorithm of battery pack at balanced/unbalanced state is proposed. Finally, the accuracy of SOC estimation has been verified at balanced/unbalanced state. The results indicate that our method can provide effective equalization.

KW - Battery pack

KW - Equalization control strategy

KW - LiFePO

KW - SOC estimation

UR - https://www.scopus.com/pages/publications/84921625407

M3 - 文章

AN - SCOPUS:84921625407

SN - 1000-6753

VL - 30

SP - 22

EP - 29

JO - Diangong Jishu Xuebao/Transactions of China Electrotechnical Society

JF - Diangong Jishu Xuebao/Transactions of China Electrotechnical Society

IS - 1

ER -

Equalization control strategy and SOC estimation for LiFePO₄ battery pack

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Keywords

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