Capacitor Based Battery Balancing System

Daowd, Mohamed Ali Abdelfattah Hamoda; Omar, Noshin; Bossche, Peter Van den; Mierlo, Joeri Van

doi:10.3390/wevj5020385

Cited by 22 publications

(18 citation statements)

References 18 publications

(48 reference statements)

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“…Shuttling capacitors cell balancing topologies, also known as "Charge Shuttling cells equalization" [10][11][12][13][14][15][16][17][18][19] basically utilize capacitors as external energy storage elements for shuttling the energy between the cells so as to perform the cells' charge balancing. The capacitor shuttling can be categorized into four shuttling configurations: the basic switched capacitor, double-tiered switched capacitor, single switched capacitor and modularized switched capacitor topologies.…”

Section: Shuttling Capacitor Cell Balancing Topologiesmentioning

confidence: 99%

“…The switched capacitor (SC) illustrated in [1][2][3][4][5][10][11][12][13]18] is shown in Figure 2. It requires n − 1 capacitors and 2n bi-directional switches for balancing n cells.…”

Section: Switched Capacitormentioning

confidence: 99%

“…The DTSC balancing method given by [14][15][16]18] is a derivation of the switched capacitor method. The difference is that, the DTSC uses two capacitor tiers for energy shuttling as shown Figure 3.…”

Section: Double-tiered Switched Capacitormentioning

confidence: 99%

“…Another derivation of the SC topology, the single switched capacitor (SSC) topology [1,2,4,5,[17][18][19] makes use of only one capacitor as shown in Figure 4. The SSC needs a single capacitor and n + 5 bi-directional switches to balance n cells, making it more cost-efficient than SC and DTSC.…”

Section: Single Switched Capacitormentioning

confidence: 99%

“…Active cell balancing uses different topologies according to the active element for storing the energy such as capacitor and/or inductor component, as well as, the energy converters as . The shuttling capacitor balancing has been subject to research [10][11][12][13][14][15][16][17][18][19]. Its simple control strategy and high efficiency are offset by a long equalization time and relatively high cost.…”

Section: Introductionmentioning

confidence: 99%

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Single Switched Capacitor Battery Balancing System Enhancements

et al. 2013

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Battery management systems (BMS) are a key element in electric vehicle energy storage systems. The BMS performs several functions concerning to the battery system, its key task being balancing the battery cells. Battery cell unbalancing hampers electric vehicles' performance, with differing individual cell voltages decreasing the battery pack capacity and cell lifetime, leading to the eventual failure of the total battery system. Quite a lot of cell balancing topologies have been proposed, such as shunt resistor, shuttling capacitor, inductor/transformer based and DC energy converters. The shuttling capacitor balancing systems in particular have not been subject to much research efforts however, due to their perceived low balancing speed and high cost. This paper tries to fill this gap by briefly discussing the shuttling capacitor cell balancing topologies, focusing on the single switched capacitor (SSC) cell balancing and proposing a novel procedure to improve the SSC balancing system performance. This leads to a new control strategy for the SSC system that can decrease the balancing system size, cost, balancing time and that can improve the SSC balancing system efficiency.

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Section: Shuttling Capacitor Cell Balancing Topologiesmentioning

confidence: 99%

“…The switched capacitor (SC) illustrated in [1][2][3][4][5][10][11][12][13]18] is shown in Figure 2. It requires n − 1 capacitors and 2n bi-directional switches for balancing n cells.…”

Section: Switched Capacitormentioning

confidence: 99%

Section: Double-tiered Switched Capacitormentioning

confidence: 99%

Section: Single Switched Capacitormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Single Switched Capacitor Battery Balancing System Enhancements

et al. 2013

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Recent Advancements in Battery Management System for Li‐Ion Batteries of Electric Vehicles: Future Role of Digital Twin, Cyber‐Physical Systems, Battery Swapping Technology, and Nondestructive Testing

Panwar

Singh²,

Garg

et al. 2021

Energy Tech

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The increasing popularity of the electric vehicles (EVs) is due to various environmental impacts of the gasoline‐/diesel‐based vehicles over the past few decades. EVs are commercialized in various parts of world but their full‐scale commercialization has not yet attained. Despite of many advantages, challenges associated with the use of EVs are their range anxiety, slow charging, and the performance/cost of battery. A thorough review from the year 2006 to 2020 is conducted in the field of battery management system (BMS). Herein, various functions, advantages, and disadvantages of methods used in BMS for cell balancing, thermal management, and protection of battery against over‐voltage and over current, estimation of state of health, and estimation of state of charge of battery are discussed. Additionally, critical gaps are identified and a framework for design of an efficient BMS is proposed. The deployment of advanced intelligent and smart technologies such as digital‐twin of battery pack, cyber‐physical systems, battery swapping technology, nondestructive testing, self‐reconfigurable batteries, and prudent recycling/reusability using automation are also discussed. In‐brief, critical gaps; advanced technologies and framework that researchers can use to develop comprehensive systems comprising advanced BMS; real‐time battery monitoring, and battery reusability and recycling; as a whole complete unit are provided.

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Novel Active Battery Balancing Methodologies for Lithium Batteries: An Experimental Comparative Analysis

Pandian,

Winston David,

Murugesan

et al. 2024

Energy Tech

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Inconsistency in the battery pack parameters results in an uneven state of charge (SoC). The active battery balancing method is an approach to equalize the SoC of the battery cells in a battery pack. In active balancing method, the battery having the highest SoC is made to equalize with the battery having the lowest SoC through the electronic circuits. However, it needs more cost and complex control circuits. To overcome this shortcoming, simple switching circuit‐based dynamic battery balancing techniques and row interconnected techniques are proposed. The proposed techniques are compared and analyzed with various conventional techniques. The experiments are conducted with 4.4 V, 6 Ah, 0.5 C lithium ferro‐phosphate battery cell and the battery pack consists of four cells. In the proposed techniques, the interconnections among the battery cells are altered using a switching matrix circuit. From the results, it is observed that the balanced row interconnected series–parallel dynamics and balanced row interconnected series–parallel have delivered superior performance under all the balancing conditions. Overall, the proposed technique enhances the battery storage capacity by 23.3% during the unbalanced SoC condition. The row interconnected series–parallel dynamics have achieved the average SoC of 96.14% under different balancing conditions.

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Capacitor Based Battery Balancing System

Cited by 22 publications

References 18 publications

Single Switched Capacitor Battery Balancing System Enhancements

Single Switched Capacitor Battery Balancing System Enhancements

Recent Advancements in Battery Management System for Li‐Ion Batteries of Electric Vehicles: Future Role of Digital Twin, Cyber‐Physical Systems, Battery Swapping Technology, and Nondestructive Testing

Novel Active Battery Balancing Methodologies for Lithium Batteries: An Experimental Comparative Analysis

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