A Practical Approach of Active Cell Balancing in a Battery Management System

Shah, Saurabh; Murali, Meera; Gandhi, Priyanka

doi:10.1109/pedes.2018.8707811

Cited by 11 publications

(6 citation statements)

References 15 publications

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“…Apart from these methods, other circuits and types have been proposed, e.g. cell bypassing in [12], [13], [14], [15] and the use of a floating capacitor or battery as a charge buffer in [16], [17], [18] and [19]. Complete decoupling of the battery system and the load can be achieved by using an individual converter for each cell as shown in [20].…”

Section: State Of Artmentioning

confidence: 99%

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Analysis of an Active Charge Balancing Method Based on a Single Nonisolated DC/DC Converter

Raeber

Heinzelmann

Abdeslam

2021

IEEE Trans. Ind. Electron.

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Section: State Of Artmentioning

confidence: 99%

“…Electronic circuits for balancing with non-isolated power converters and a MOSFET switch matrix were proposed in [16], [17], [18] and [19]. They are not capable of continuous balancing due to their unidirectional power flow and require a converter with a current ratio of twice the resulting balancing current.…”

Section: State Of Artmentioning

confidence: 99%

Analysis of an Active Charge Balancing Method Based on a Single Nonisolated DC/DC Converter

Raeber

Heinzelmann

Abdeslam

2021

IEEE Trans. Ind. Electron.

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“…They depend on the principle of operation and can be grouped differently. Therefore, by taking into account the method of energy transfer, five basic balancing methods can be distinguished, namely: cell bypass, cell to cell, cell to battery pack, pack to cell and cell (s) to pack and to cell (s), as indicated in Figure 2 [30]. Parametric selection (matching) is achieved by choosing cells with very close electrical parameters and electrochemical properties.…”

Section: Balancing (Equalization) Cells Solutionsmentioning

confidence: 99%

Performance of Passive and Active Balancing Systems of Lithium Batteries in Onerous Mine Environment

et al. 2021

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To use lithium-iron-phosphate battery packs in the supply systems of any electric mining equipment and/or machines, the required conditions of work safety must be met. This applies in particular to coal mines endangered by fire and/or explosion. To meet the spark-safety conditions, the cells (together with the battery management system—BMS) must be isolated from the influence of the environment, and therefore placed in special fire-tight housings. This significantly degrades the heat dissipation, thus affecting the operating conditions of the cell-packs. Therefore, their usage without the so-called BMS is not recommended, as shown in the authors’ preliminary research. In practice, various BMS are used, most often with the so-called passive balancing. However, their application in mines is uncertain, due to the effect of heating under operation. When it comes to active BMS, they usually possess a quite complex structure and hence, are relatively expensive. Therefore, the authors conducted research for two specially developed active and one commercial passive BMS cooperating with selected lithium-iron-phosphate (LiFePO4) batteries when used in a suspended mining vehicle type PCA-1. The tests were carried out under environmental temperatures ranging from +5 °C to +60 °C. The effect of mismatching (12.5% to 37.5% of total cells number) of the cell parameters on the temperature distribution and voltage fading at the terminals of individual cells was checked. As a result of the investigations, the practical usefulness of the developed active BMS was determined, enabling the extension of the lithium-iron-phosphate battery life under onerous mine conditions, for a single recharge, which is a novelty. On the basis of the obtained results, appropriate practical conclusions were formulated.

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“…Although there is no problem in the initial stage of the cell composition or the force composition, the stability of the cell voltage decreases due to physical and chemical causes as the operating time passes [5,6]. Accordingly, a difference in the amounts of charge between batteries constituting a cell occurs and results in an imbalance between the count unit and the module unit [7][8][9]. For the long-term operation of a system that includes batteries with different voltage capacities in a module unit, overcharging of batteries during repeated charging and discharging accelerates aging and causes a reduction in overall system efficiency and performance [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, a difference in the amounts of charge between batteries constituting a cell occurs and results in an imbalance between the count unit and the module unit [7][8][9]. For the long-term operation of a system that includes batteries with different voltage capacities in a module unit, overcharging of batteries during repeated charging and discharging accelerates aging and causes a reduction in overall system efficiency and performance [9][10][11]. Accordingly, for stable ESS operation and battery management, a voltage balancing operation that can synchronize battery charging and discharging is required [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

New Cell Balancing Technique Using SIMO Two-Switch Flyback Converter with Multi Cells

Kim

Park

2022

Energies

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Recently, as the perception of eco-friendliness has changed, the demand for energy storage devices has been rapidly increasing due to the growth of the electric vehicle industry and smart grid facilities, which are emerging as an alternative to next-generation electricity supply and demand. Therefore, the importance of battery management technology is growing, and various voltage balancing techniques between battery cells are being studied in order to maintain high efficiency and continuous performance of batteries. This paper proposes a voltage balancing topology using a single input-multiple output (SIMO) two-switch flyback converter in a series battery configuration to resolve voltage imbalance between batteries. The characteristic of the proposed topology is that each cell on the secondary side of the two-switch flyback converter is connected to one high-frequency transformer to share the magnetic flux, and voltage balancing is performed according to the switch operation of the converter. At this time, the accumulated excess energy of the converter is refluxed to the power supply side through the freewheeling diode and converted into reactive power. The verification of the usefulness of the theoretical analysis in this paper was based on the analysis of the dynamic characteristics and steady state of the circuit through PSIM and experiments, and was conducted for one module composed of four cells.

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A Practical Approach of Active Cell Balancing in a Battery Management System

Cited by 11 publications

References 15 publications

Analysis of an Active Charge Balancing Method Based on a Single Nonisolated DC/DC Converter

Analysis of an Active Charge Balancing Method Based on a Single Nonisolated DC/DC Converter

Performance of Passive and Active Balancing Systems of Lithium Batteries in Onerous Mine Environment

New Cell Balancing Technique Using SIMO Two-Switch Flyback Converter with Multi Cells

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