Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology

Zhengqi Wei; Henry Shu-Hung Chung; Ruihong Zhang

doi:10.1109/ECCE55643.2024.10860782

Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

1 Citation (Scopus)

Abstract

An autonomous battery equalization circuit that performs energy routing and equalizes the battery cell voltage of series-connected battery string is proposed. It utilizes a capacitively-coupled two-stage power conversion system. The first stage converts the voltage of the battery string into a high-frequency AC voltage to form an AC link. The second stage consists of diode-based rectifiers with their input connected in parallel to the AC link and their output connected to the battery cells. The current drawn from the first stage is shared among the rectifiers in the second stage. As the current taken from the first stage is common to all battery cells, charging or discharging of individual battery cells is autonomously determined by the output current of the second stage. The architecture only requires a single magnetic component and one active switch, volume and weight are reduced and the control circuit of the circuit can be simplified. An equalizer prototype has been built and tested with a battery string comprising four 3.6V, 18650 batteries. © 2024 IEEE.

Original language	English
Title of host publication	2024 IEEE Energy Conversion Congress and Exposition (ECCE)
Publisher	IEEE
Pages	2193-2199
ISBN (Electronic)	979-8-3503-7607-4
ISBN (Print)	979-8-3503-7606-7, 979-8-3503-7605-0
DOIs	https://doi.org/10.1109/ECCE55643.2024.10860782
Publication status	Published - Oct 2024
Event	16th IEEE Energy Conversion Congress and Exposition (ECCE 2024) - Phoenix Convention Center, Phoenix, United States Duration: 20 Oct 2024 → 24 Oct 2024 https://www.ieee-ecce.org/2024/

Publication series

Name	IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings
ISSN (Print)	2329-3721
ISSN (Electronic)	2329-3748

Conference

Conference	16th IEEE Energy Conversion Congress and Exposition (ECCE 2024)
Abbreviated title	ECCE2024
Place	United States
City	Phoenix
Period	20/10/24 → 24/10/24
Internet address	https://www.ieee-ecce.org/2024/

Funding

This work was supported by the Green Tech Fund from the Hong Kong Special Administrative Region, China, under Project #GTF202020166.

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

Battery equalizer
battery management system
energy storage systems
lithium-ion batteries

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10.1109/ECCE55643.2024.10860782

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Cite this

@inproceedings{4404a8ca62d74e4fad0ddec838f50bc4,

title = "Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology",

abstract = "An autonomous battery equalization circuit that performs energy routing and equalizes the battery cell voltage of series-connected battery string is proposed. It utilizes a capacitively-coupled two-stage power conversion system. The first stage converts the voltage of the battery string into a high-frequency AC voltage to form an AC link. The second stage consists of diode-based rectifiers with their input connected in parallel to the AC link and their output connected to the battery cells. The current drawn from the first stage is shared among the rectifiers in the second stage. As the current taken from the first stage is common to all battery cells, charging or discharging of individual battery cells is autonomously determined by the output current of the second stage. The architecture only requires a single magnetic component and one active switch, volume and weight are reduced and the control circuit of the circuit can be simplified. An equalizer prototype has been built and tested with a battery string comprising four 3.6V, 18650 batteries. {\textcopyright} 2024 IEEE.",

keywords = "Battery equalizer, battery management system, energy storage systems, lithium-ion batteries",

author = "Zhengqi Wei and Chung, \{Henry Shu-Hung\} and Ruihong Zhang",

year = "2024",

month = oct,

doi = "10.1109/ECCE55643.2024.10860782",

language = "English",

isbn = "979-8-3503-7606-7",

series = "IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings",

publisher = "IEEE",

pages = "2193--2199",

booktitle = "2024 IEEE Energy Conversion Congress and Exposition (ECCE)",

address = "United States",

note = "16th IEEE Energy Conversion Congress and Exposition (ECCE 2024), ECCE2024 ; Conference date: 20-10-2024 Through 24-10-2024",

url = "https://www.ieee-ecce.org/2024/",

}

Wei, Z , Chung, HS-H & Zhang, R 2024, Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology. in 2024 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings, IEEE, pp. 2193-2199, 16th IEEE Energy Conversion Congress and Exposition (ECCE 2024), Phoenix, Arizona, United States, 20/10/24. https://doi.org/10.1109/ECCE55643.2024.10860782

Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology. / Wei, Zhengqi ; Chung, Henry Shu-Hung; Zhang, Ruihong.
2024 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2024. p. 2193-2199 (IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology

AU - Wei, Zhengqi

AU - Chung, Henry Shu-Hung

AU - Zhang, Ruihong

PY - 2024/10

Y1 - 2024/10

N2 - An autonomous battery equalization circuit that performs energy routing and equalizes the battery cell voltage of series-connected battery string is proposed. It utilizes a capacitively-coupled two-stage power conversion system. The first stage converts the voltage of the battery string into a high-frequency AC voltage to form an AC link. The second stage consists of diode-based rectifiers with their input connected in parallel to the AC link and their output connected to the battery cells. The current drawn from the first stage is shared among the rectifiers in the second stage. As the current taken from the first stage is common to all battery cells, charging or discharging of individual battery cells is autonomously determined by the output current of the second stage. The architecture only requires a single magnetic component and one active switch, volume and weight are reduced and the control circuit of the circuit can be simplified. An equalizer prototype has been built and tested with a battery string comprising four 3.6V, 18650 batteries. © 2024 IEEE.

AB - An autonomous battery equalization circuit that performs energy routing and equalizes the battery cell voltage of series-connected battery string is proposed. It utilizes a capacitively-coupled two-stage power conversion system. The first stage converts the voltage of the battery string into a high-frequency AC voltage to form an AC link. The second stage consists of diode-based rectifiers with their input connected in parallel to the AC link and their output connected to the battery cells. The current drawn from the first stage is shared among the rectifiers in the second stage. As the current taken from the first stage is common to all battery cells, charging or discharging of individual battery cells is autonomously determined by the output current of the second stage. The architecture only requires a single magnetic component and one active switch, volume and weight are reduced and the control circuit of the circuit can be simplified. An equalizer prototype has been built and tested with a battery string comprising four 3.6V, 18650 batteries. © 2024 IEEE.

KW - Battery equalizer

KW - battery management system

KW - energy storage systems

KW - lithium-ion batteries

UR - https://www.scopus.com/pages/publications/86000452663

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U2 - 10.1109/ECCE55643.2024.10860782

DO - 10.1109/ECCE55643.2024.10860782

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 979-8-3503-7606-7

SN - 979-8-3503-7605-0

T3 - IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings

SP - 2193

EP - 2199

BT - 2024 IEEE Energy Conversion Congress and Exposition (ECCE)

PB - IEEE

T2 - 16th IEEE Energy Conversion Congress and Exposition (ECCE 2024)

Y2 - 20 October 2024 through 24 October 2024

ER -

Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology

Abstract

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Funding

UN SDGs

Research Keywords

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GTF_EPD: Smart Power Conditioners Using Second Life Electric Vehicle (EV) Batteries

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Battery Equalization Architecture Using Capacitively-Coupled ZETA-Derived Topology

Abstract

Publication series

Conference

Funding

UN SDGs

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GTF_EPD: Smart Power Conditioners Using Second Life Electric Vehicle (EV) Batteries

Cite this