一种串联蓄电池系统多重多状态能量均衡器及其控制方法

doi:10.19595/j.cnki.1000-6753.tces.L90173

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Abstract Aiming at the problems of unbalanced energy of individual cells in a large series lithium battery pack and the influence of individual cells on the charge and discharge capacity, this paper proposes a multi-state energy equalizer and its control method for a series battery system. The first and second balances in the static state are carried out at the same time for each battery unit, which improves the rate at which the energy of each battery unit in the series battery pack is consistent. In the third rebalance, three different equalization methods under three different states enable rapid energy transfer between battery cells and adjustable voltage sources, and the charging and discharging capacity of the series battery pack is improved. The structure of this equalizer is easy to modularize, the principle of equalization is simple, and the equalization speed is fast, and it is suitable for large-scale series battery pack systems. This article introduces the basic principles and control methods of the equalizer in detail, and builds an experimental platform for equalization experiments. The results prove the feasibility of the equalizer.

Key words： Multiple states energy equalizer control methods equilibrium experiment

Received: 30 June 2020

PACS:

TM912

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	Liu Hongrui
	Zhang Kaixiang
	Guo Yixuan
	Yin Rong
	Qian Jing

Cite this article:

Liu Hongrui,Zhang Kaixiang,Guo Yixuan等. A Multi-State Energy Equalizer and Control Methods for Series Battery System[J]. Transactions of China Electrotechnical Society, 2020, 35(zk2): 652-660.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90173 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/Izk2/652

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