Comparison of Active and Passive Balancing by a Long Term Test Including a Post-Mortem Analysis of all Single Battery Cells

Ziegler, Andreas; Oeser, David; Arndt, Bernhard; Ackva, Ansgar

doi:10.1109/cando-epe.2018.8601165

Cited by 17 publications

(15 citation statements)

References 11 publications

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“…Reviews and a general topology overview are available in [4], [5] and [6]. The superiority of active balancing over passive balancing in terms of energy efficiency and balancing speed has been proven in theory ( [6], [7], [8]) and by measurement ( [9], [10], [11], [12]). Most authors focus on the methods shown in Fig.…”

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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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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“…Compared with passive equalization, active topology can effectively reduce the inconsistency between cell capacity and internal resistance, and improve battery lifetime and available energy. 118 Among the AEM topologies, CBBCs has the merits of low price and simple strategy, while the equalization time required is quite long. IBBCs can transfer energy bidirectionally and have moderate balancing speed, but have the disadvantages of EMI problem and complex equalization strategy.…”

Section: Summary Of Equalization Topologymentioning

confidence: 99%

“…The active topology is popular for good efficiency and relative low power loss. Compared with passive equalization, active topology can effectively reduce the inconsistency between cell capacity and internal resistance, and improve battery lifetime and available energy 118 …”

Section: Equalization Circuit Topologymentioning

confidence: 99%

A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

et al. 2020

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The rapid growth of transportation demand has been enlarged strongly which has promoted electric vehicles powered by lithium-ion batteries. However, the inconsistencies within the battery pack will deteriorate over the lifecycle and affect the performance of electric vehicles. Therefore, various thermal management systems and equalization systems have been applied in battery management system to deal with the inconsistencies, extend battery service life, and improve safety performance. This review summarizes the origination of inconsistency within lithium-ion batteries from production to usage process, and then introduces the classification methods and application scenarios of the balance management system in detail. Based on the circuit topology, equalization systems can be classified into passive and active topologies. Active topologies

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“…The use of intelligent BMS with the possibility of balancing the individual cells is another attempt to extend service life and has already been discussed in the literature. [9]- [11]. In this article, a long term test is used to demonstrate a better utilization of batteries by such a BMS.…”

Section: Introductionmentioning

confidence: 99%

Reducing Cell to Cell Variation of Lithium-Ion Battery Packs During Operation

et al. 2021

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In this work, an experimental approach to reduce the variation from cell to cell during battery operation is evaluated to reach a better battery utilization. Numerous theoretical considerations of intelligent battery management systems without long-term experimental validation of their capabilities lead to a gap in the literature, which this work aims to address. For this purpose, the ageing behaviour of two batteries is investigated for almost 1.5 years. One battery is connected to an active balancing battery management system (BMS) and the other to a conventional passive balancing BMS. Important battery parameters, such as capacity and internal resistance, are recorded in each cycle. The battery behaviour is evaluated in detail by observing the voltage difference of the individual cells at the end of discharge and by calculating the amount of charge balanced by the BMS. Significant differences between the BMS systems used are elucidated, which illustrate the advantages of active balancing. In contrast to passive balancing, active balancing can reduce the ageing rate of the battery and achieve better utilization with a more than five times lower voltage spread at end of discharge, a up to 3.1% higher discharge capacity and a 7.7% longer service life.

show abstract

Comparison of Active and Passive Balancing by a Long Term Test Including a Post-Mortem Analysis of all Single Battery Cells

Cited by 17 publications

References 11 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

A comprehensive review on inconsistency and equalization technology of lithium‐ion battery for electric vehicles

Reducing Cell to Cell Variation of Lithium-Ion Battery Packs During Operation

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