An active balancing circuit for lithium battery management system with optoelectronic switches

Ran, Feng; Xu, Hao; Yuan, Jing; Qin, Jian‐Zhong; Li, Wenhui

doi:10.1109/tencon.2015.7373096

Cited by 4 publications

(4 citation statements)

References 13 publications

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“…• OPC: An optimal control without consideration of the efficiency, this is equivalent to minimising the objective function (15) with w 2 = 0.…”

Section: Experimental Validationmentioning

confidence: 99%

“…• OPCE: The proposed controller with consideration of the energy efficiency using the objective function (15). The random values generated for the initial SOC of the cells are: 0.7700, 0.8300, 0.7000, 0.8500, 0.7500, 0.7800, 0.8200, 0.8700, 0.7000 0.8600, 0.7300, 0.8600, 0.7800, and 0.7100.…”

Section: Experimental Validationmentioning

confidence: 99%

“…With the same balancing hardware, different control strategies would affect the balancing speed and energy efficiency. The rule-based control is commonly used in the active balancing system because it has a simple structure and low computational cost [13,14,15,16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimal control of bidirectional active clamp forward converter with synchronous rectifier based cell-to-external-storage active balancing system

Shi

Bui

Marco

2021

Journal of Energy Storage

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“…• OPC: An optimal control without consideration of the efficiency, this is equivalent to minimising the objective function (15) with w 2 = 0.…”

Section: Experimental Validationmentioning

confidence: 99%

Section: Experimental Validationmentioning

confidence: 99%

See 1 more Smart Citation

Optimal control of bidirectional active clamp forward converter with synchronous rectifier based cell-to-external-storage active balancing system

Shi

Bui

Marco

2021

Journal of Energy Storage

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“…Active balancing uses energy-storage elements, such as transformers, inductors, and capacitors, to transfer energy from high-voltage battery cells to low-voltage battery cells, which has a balancing technique with the advantages of low energy loss and equalizing the voltage efficiency of battery cells by transferring charge. This method uses energy storage elements as external energy storage to transfer energy between the cells [4]. In battery systems, cell imbalance is fairly common.…”

Section: Introductionmentioning

confidence: 99%

Boosting Li-Ion Battery Pack Lifespan with Active On-Load Balancing

Salam S. Hussein,

Ahmed J. Abid,

Adel A. Obed

et al. 2023

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Due to the repeated cycles of charging and discharging, battery manufacturers cannot ensure perfect cell balance. Cell balancing is considered essential for equalizing each battery cell to the same state of charge level in a series configuration. Lithium-ion (Li-ion) batteries can be damaged or have their lifespan decreased by improper discharge processes. This study investigates battery balance during discharge by analyzing the state of charge (SoC) and current distribution of a 3-cell battery pack based on a multi-transformer shared flyback converter (F-C) under varying load conditions. A balanced approach is employed to control individual cells using a dedicated switch for each cell during the discharge process. The results indicate that the proposed active balancing method can enhance the Li-ion pack's balancing capacity while reducing the disparity in residual energy among the battery cells. The unique contribution of this research lies in the active balancing approach, which offers efficient and effective battery management during discharge. This approach provides crucial insights for the future development of improved battery systems. Therefore, Given the linearly decreasing target SoC, the average error over all time points is approximately 4.29%.

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