Lithium-ion Battery Charging and Discharging Equalizer and Balancing Strategies

doi:10.3969/j.issn.0372-2112.2016.08.030

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Lithium-ion Battery Charging and Discharging Equalizer and Balancing Strategies

更新时间：2025-07-08

- Lithium-ion Battery Charging and Discharging Equalizer and Balancing Strategies
- Acta Electronica Sinica Vol. 44, Issue 8, Pages: 1981-1987(2016)
- 作者机构：
  
  昆明理工大学电力工程学院,云南,昆明,650500
- 作者简介：
- 基金信息：
  
  Program supported by Yun nan Province Foundation (No.KKSY201404106);Sponsered by Education Department of Yunnan Province (No.2015Y073);National Natural Science Foundation of China (No.61562056)
- DOI：10.3969/j.issn.0372-2112.2016.08.030
  CLC： TM91
- Published：2016
- 稿件说明：
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Lithium-ion Battery Charging and Discharging Equalizer and Balancing Strategies[J]. Acta Electronica Sinica, 2016, 44(8): 1981-1987.
DOI：

Lithium-ion Battery Charging and Discharging Equalizer and Balancing Strategies[J]. Acta Electronica Sinica, 2016, 44(8): 1981-1987. DOI： 10.3969/j.issn.0372-2112.2016.08.030.

摘要

本文提出了一种针对锂离子蓄电池组的均衡器，根据电池组充放电状态采取两种不同的均衡策略.当电池组处于充电状态时，对电池组中能量最高的单体电池进行均衡放电，以提高整个电池组的充电容量.当电池组处于放电状态时，对电池组中能量最低的单体电池进行均衡充电，以提高整个电池组的放电容量.均衡器以电感为储能元件，等效的均衡电路为典型的升降压斩波电路和降压斩波电路，均衡电流可控可调.本文详细分析了均衡器的工作原理和均衡策略，同时进行了仿真实验和实际的均衡实验，实验结果均证明了此均衡器的可行性.

Abstract

This paper proposes an equalizer for lithium-ion battery and two different balancing strategies are used according to battery charging and discharging states.In battery charging state

the battery cell with the highest energy is balanced and discharged by the equalizer to improve charge capacity of the whole battery pack.In battery discharging state

the battery cell with the lowest energy is balanced and charged by the equalizer to improve discharge capacity of the whole battery pack.The balancing circuit uses an inductor as the energy storage element and the equivalent balancing circuits are the typical boost-buck chopper circuit and the buck chopper circuit

further the balancing current is controllable and adjustable.This paper draws working principle and control strategies of the equalizer.Furthermore the simulation and actual balancing experiments have been completed.Finally

the feasibility of the equalizer suggested in this paper is verified according to the balancing experimental results.

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