Investigation on dynamic equalisation performance of lithium battery pack management

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Investigation on dynamic equalisation performance of lithium battery pack management. / Lv, Jie; Song, Wenji; Lin, Shili; Feng, Ziping; Ding, Yulong; Li, Yongliang.

In: IET Circuits, Devices and Systems, Vol. 11, No. 4, 01.07.2017, p. 388-394.

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@article{5e7a32eac0c040af92d533e70d580e6e,
title = "Investigation on dynamic equalisation performance of lithium battery pack management",
abstract = "Lithium batteries must be connected in series to achieve large capacity and high-power output. Battery management system (BMS), which is designed to protect battery pack from damage and increase battery life, is important in electrical power system. The present equalisation techniques have many disadvantages: The passive balancing wastes energy and generates heat, while active balancing is complex. This study proposes an intelligent BMS with dynamic equalisation (DBMS) which contains active and passive balancing circuit independently per cell. Experimental results indicate that DBMS can reduce the inconsistency among cells. Moreover, the DBMS can assist battery stack to store and release more energy. Besides, the battery stack with DBMS gives an energy efficiency of 96.5% which is 7.7% higher than that without balancing. In addition, the battery stack with DBMS can reduce the maximum state of charge difference of cells from 10.415% to 4.51% after three charge-discharge cycles. What is more, the DBMS is simple and can decrease the auxiliary power level and the system heat. Such a DBMS will help us to provide a high-performance battery pack.",
author = "Jie Lv and Wenji Song and Shili Lin and Ziping Feng and Yulong Ding and Yongliang Li",
year = "2017",
month = jul,
day = "1",
doi = "10.1049/iet-cds.2016.0213",
language = "English",
volume = "11",
pages = "388--394",
journal = "IET Circuits, Devices and Systems",
issn = "1751-858X",
publisher = "Institution of Engineering and Technology",
number = "4",

}

RIS

TY - JOUR

T1 - Investigation on dynamic equalisation performance of lithium battery pack management

AU - Lv, Jie

AU - Song, Wenji

AU - Lin, Shili

AU - Feng, Ziping

AU - Ding, Yulong

AU - Li, Yongliang

PY - 2017/7/1

Y1 - 2017/7/1

N2 - Lithium batteries must be connected in series to achieve large capacity and high-power output. Battery management system (BMS), which is designed to protect battery pack from damage and increase battery life, is important in electrical power system. The present equalisation techniques have many disadvantages: The passive balancing wastes energy and generates heat, while active balancing is complex. This study proposes an intelligent BMS with dynamic equalisation (DBMS) which contains active and passive balancing circuit independently per cell. Experimental results indicate that DBMS can reduce the inconsistency among cells. Moreover, the DBMS can assist battery stack to store and release more energy. Besides, the battery stack with DBMS gives an energy efficiency of 96.5% which is 7.7% higher than that without balancing. In addition, the battery stack with DBMS can reduce the maximum state of charge difference of cells from 10.415% to 4.51% after three charge-discharge cycles. What is more, the DBMS is simple and can decrease the auxiliary power level and the system heat. Such a DBMS will help us to provide a high-performance battery pack.

AB - Lithium batteries must be connected in series to achieve large capacity and high-power output. Battery management system (BMS), which is designed to protect battery pack from damage and increase battery life, is important in electrical power system. The present equalisation techniques have many disadvantages: The passive balancing wastes energy and generates heat, while active balancing is complex. This study proposes an intelligent BMS with dynamic equalisation (DBMS) which contains active and passive balancing circuit independently per cell. Experimental results indicate that DBMS can reduce the inconsistency among cells. Moreover, the DBMS can assist battery stack to store and release more energy. Besides, the battery stack with DBMS gives an energy efficiency of 96.5% which is 7.7% higher than that without balancing. In addition, the battery stack with DBMS can reduce the maximum state of charge difference of cells from 10.415% to 4.51% after three charge-discharge cycles. What is more, the DBMS is simple and can decrease the auxiliary power level and the system heat. Such a DBMS will help us to provide a high-performance battery pack.

UR - http://www.scopus.com/inward/record.url?scp=85028764292&partnerID=8YFLogxK

U2 - 10.1049/iet-cds.2016.0213

DO - 10.1049/iet-cds.2016.0213

M3 - Article

AN - SCOPUS:85028764292

VL - 11

SP - 388

EP - 394

JO - IET Circuits, Devices and Systems

JF - IET Circuits, Devices and Systems

SN - 1751-858X

IS - 4

ER -