An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries

Bi-directional cell-to-cell balancing circuits can well prevent voltage imbalance of batteries that are connected in series. However, it is a challenge to achieve high equalization speed and equalization efficiency with low complex circuit structure. In order to overcome this challenge, it is propos...

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Bibliographic Details
Main Authors:	Jiye Han, Shiyan Yang, Xiaofang Liu, Wei Yang
Format:	Article
Language:	English
Published:	MDPI AG 2019-10-01
Series:	Energies
Subjects:	series connected lithium-ion batteries cell-to-cell balancing circuit direct equalizer
Online Access:	https://www.mdpi.com/1996-1073/12/20/3978

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spelling	doaj-dabec5a9b1884ecc933ceef9a75ac2712020-11-25T02:34:44ZengMDPI AGEnergies1996-10732019-10-011220397810.3390/en12203978en12203978An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected BatteriesJiye Han0Shiyan Yang1Xiaofang Liu2Wei Yang3Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150006, ChinaDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin 150006, ChinaDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin 150006, ChinaDepartment of Electrical Engineering, Harbin Institute of Technology, Harbin 150006, ChinaBi-directional cell-to-cell balancing circuits can well prevent voltage imbalance of batteries that are connected in series. However, it is a challenge to achieve high equalization speed and equalization efficiency with low complex circuit structure. In order to overcome this challenge, it is proposed that a direct bi-directional cell-to-cell active equalization method that works in continuous current mode (CCM) is used. The proposed balancing circuit allows energy to transfer directly from the source cell to the target cell in one step, which guarantees high balancing speed and efficiency. The experiments in which six-20 Ah lithium-ion batteries are connected in series have been carried out, and the results show that the balancing circuit achieves a good comprehensive performance of equalization in efficiency, speed, and circuit complexity.https://www.mdpi.com/1996-1073/12/20/3978series connected lithium-ion batteriescell-to-cell balancing circuitdirect equalizer
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Jiye Han Shiyan Yang Xiaofang Liu Wei Yang
spellingShingle	Jiye Han Shiyan Yang Xiaofang Liu Wei Yang An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries Energies series connected lithium-ion batteries cell-to-cell balancing circuit direct equalizer
author_facet	Jiye Han Shiyan Yang Xiaofang Liu Wei Yang
author_sort	Jiye Han
title	An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries
title_short	An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries
title_full	An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries
title_fullStr	An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries
title_full_unstemmed	An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries
title_sort	active direct cell-to-cell balancing circuit in continuous current mode for series connected batteries
publisher	MDPI AG
series	Energies
issn	1996-1073
publishDate	2019-10-01
description	Bi-directional cell-to-cell balancing circuits can well prevent voltage imbalance of batteries that are connected in series. However, it is a challenge to achieve high equalization speed and equalization efficiency with low complex circuit structure. In order to overcome this challenge, it is proposed that a direct bi-directional cell-to-cell active equalization method that works in continuous current mode (CCM) is used. The proposed balancing circuit allows energy to transfer directly from the source cell to the target cell in one step, which guarantees high balancing speed and efficiency. The experiments in which six-20 Ah lithium-ion batteries are connected in series have been carried out, and the results show that the balancing circuit achieves a good comprehensive performance of equalization in efficiency, speed, and circuit complexity.
topic	series connected lithium-ion batteries cell-to-cell balancing circuit direct equalizer
url	https://www.mdpi.com/1996-1073/12/20/3978
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An Active Direct Cell-to-Cell Balancing Circuit in Continuous Current Mode for Series Connected Batteries

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