A high efficiency isolated bidirectional equalizer for Lithium-ion battery string

Yao Guo; Rengui Lu; Guoliang Wu; Chunbo Zhu

doi:10.1109/VPPC.2012.6422770

A high efficiency isolated bidirectional equalizer for Lithium-ion battery string

Yao Guo^*
, Rengui Lu
, Guoliang Wu
, Chunbo Zhu

^*Corresponding author for this work

School of Electrical Engineering and Automation

Harbin Institute of Technology
Heilongjiang Electric Power Science Research Institute

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

30 Scopus citations

Abstract

Equalization for battery pack to enhance its usage life and performance is important for xEVs. In this paper, an isolated bidirectional equalizer based on full-bridge for Lithium-ion battery string is proposed. If a battery charge is excessive, the equalizer transfer charge from this cell to battery string; if a battery charge is insufficient, the equalizer will charge this cell from battery string. Closed-loop control keeps the equalization current constant, allowing precise control of the transferred charge. On the basis of considering OCV hysteresis, we proposed an equalization strategy based on SOC estimation for the equalizer. The equalizer features small size, high efficiency, and high accuracy. Experimental results confirm the applicability of the equalization scheme.

Original language	English
Title of host publication	2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012
Pages	962-966
Number of pages	5
DOIs	https://doi.org/10.1109/VPPC.2012.6422770
State	Published - 2012
Event	2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012 - Seoul, Korea, Republic of Duration: 9 Oct 2012 → 12 Oct 2012

Publication series

Name	2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012

Conference

Conference	2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012
Country/Territory	Korea, Republic of
City	Seoul
Period	9/10/12 → 12/10/12

UN SDGs

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

SDG 7 Affordable and Clean Energy

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10.1109/VPPC.2012.6422770

Cite this

@inproceedings{5b0856e5f27b4a369bd3b169cdac7604,

title = "A high efficiency isolated bidirectional equalizer for Lithium-ion battery string",

abstract = "Equalization for battery pack to enhance its usage life and performance is important for xEVs. In this paper, an isolated bidirectional equalizer based on full-bridge for Lithium-ion battery string is proposed. If a battery charge is excessive, the equalizer transfer charge from this cell to battery string; if a battery charge is insufficient, the equalizer will charge this cell from battery string. Closed-loop control keeps the equalization current constant, allowing precise control of the transferred charge. On the basis of considering OCV hysteresis, we proposed an equalization strategy based on SOC estimation for the equalizer. The equalizer features small size, high efficiency, and high accuracy. Experimental results confirm the applicability of the equalization scheme.",

author = "Yao Guo and Rengui Lu and Guoliang Wu and Chunbo Zhu",

year = "2012",

doi = "10.1109/VPPC.2012.6422770",

language = "英语",

isbn = "9781467309530",

series = "2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012",

pages = "962--966",

booktitle = "2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012",

note = "2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012 ; Conference date: 09-10-2012 Through 12-10-2012",

}

Guo, Y, Lu, R, Wu, G & Zhu, C 2012, A high efficiency isolated bidirectional equalizer for Lithium-ion battery string. in 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012., 6422770, 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012, pp. 962-966, 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012, Seoul, Korea, Republic of, 9/10/12. https://doi.org/10.1109/VPPC.2012.6422770

A high efficiency isolated bidirectional equalizer for Lithium-ion battery string. / Guo, Yao; Lu, Rengui; Wu, Guoliang et al.
2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012. 2012. p. 962-966 6422770 (2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - A high efficiency isolated bidirectional equalizer for Lithium-ion battery string

AU - Guo, Yao

AU - Lu, Rengui

AU - Wu, Guoliang

AU - Zhu, Chunbo

PY - 2012

Y1 - 2012

N2 - Equalization for battery pack to enhance its usage life and performance is important for xEVs. In this paper, an isolated bidirectional equalizer based on full-bridge for Lithium-ion battery string is proposed. If a battery charge is excessive, the equalizer transfer charge from this cell to battery string; if a battery charge is insufficient, the equalizer will charge this cell from battery string. Closed-loop control keeps the equalization current constant, allowing precise control of the transferred charge. On the basis of considering OCV hysteresis, we proposed an equalization strategy based on SOC estimation for the equalizer. The equalizer features small size, high efficiency, and high accuracy. Experimental results confirm the applicability of the equalization scheme.

AB - Equalization for battery pack to enhance its usage life and performance is important for xEVs. In this paper, an isolated bidirectional equalizer based on full-bridge for Lithium-ion battery string is proposed. If a battery charge is excessive, the equalizer transfer charge from this cell to battery string; if a battery charge is insufficient, the equalizer will charge this cell from battery string. Closed-loop control keeps the equalization current constant, allowing precise control of the transferred charge. On the basis of considering OCV hysteresis, we proposed an equalization strategy based on SOC estimation for the equalizer. The equalizer features small size, high efficiency, and high accuracy. Experimental results confirm the applicability of the equalization scheme.

UR - https://www.scopus.com/pages/publications/84874433772

U2 - 10.1109/VPPC.2012.6422770

DO - 10.1109/VPPC.2012.6422770

M3 - 会议稿件

AN - SCOPUS:84874433772

SN - 9781467309530

T3 - 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012

SP - 962

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BT - 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012

T2 - 2012 IEEE Vehicle Power and Propulsion Conference, VPPC 2012

Y2 - 9 October 2012 through 12 October 2012

ER -

A high efficiency isolated bidirectional equalizer for Lithium-ion battery string

Abstract

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Conference

UN SDGs

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