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oapen-20.500.12657-540672022-04-16T02:57:28Z Auswirkungen der hochfrequent alternierenden Ströme leistungselektronischer Schaltungen auf das Betriebs- und Alterungsverhalten von Lithium-Ionen-Batterien Korth Pereira Ferraz, Pablo lithium-ion-battery battery ageing cyclic ageing tests power electronics current ripple bic Book Industry Communication::T Technology, engineering, agriculture::TH Energy technology & engineering::THR Electrical engineering bic Book Industry Communication::T Technology, engineering, agriculture::TJ Electronics & communications engineering::TJF Electronics engineering::TJFC Circuits & components The success of battery electric vehicles mainly depends on the reliability and predictability of the battery pack connected to different power electronics with high frequency current ripple inducing switching patterns. In this thesis, the influence of these current ripple on battery ageing and battery operating behaviour is investigated by cyclic ageing tests on lithium-ion-cells with induced high frequency current ripple by a specifically developed cell tester. Comparing the most important ageing parameters, i.~e. capacity loss, inner resistance and polarisation behaviour, yields only a minor and mostly neglectable influence of current ripple on battery ageing, compared to more severe impacts such as cycle depth. Moreover, the direct link between the ageing parameters is confirmed and independent from the cell's cycling. However, the measurements also show that the practical cycle depth is limited due to current ripple and suggest a quantitative connection between the size of the current ripple and the lowered reachable cycle depths. Hence, a severe impact of current ripple on the reliability of the battery pack is unlikely whereas the predictability might be noticeably reduced. 2022-04-15T13:09:10Z 2022-04-15T13:09:10Z 2022 book ONIX_20220415_9783798332416_8 2367-3761 9783798332416 9783798332423 https://library.oapen.org/handle/20.500.12657/54067 ger Elektrische Energietechnik an der TU Berlin application/pdf Attribution 4.0 International korth_pereira_ferraz_pablo.pdf https://verlag.tu-berlin.de/produkt/978-3-7983-3241-6/ Universitätsverlag der Technischen Universität Berlin 10.14279/depositonce-12657 The success of battery electric vehicles mainly depends on the reliability and predictability of the battery pack connected to different power electronics with high frequency current ripple inducing switching patterns. In this thesis, the influence of these current ripple on battery ageing and battery operating behaviour is investigated by cyclic ageing tests on lithium-ion-cells with induced high frequency current ripple by a specifically developed cell tester. Comparing the most important ageing parameters, i.~e. capacity loss, inner resistance and polarisation behaviour, yields only a minor and mostly neglectable influence of current ripple on battery ageing, compared to more severe impacts such as cycle depth. Moreover, the direct link between the ageing parameters is confirmed and independent from the cell's cycling. However, the measurements also show that the practical cycle depth is limited due to current ripple and suggest a quantitative connection between the size of the current ripple and the lowered reachable cycle depths. Hence, a severe impact of current ripple on the reliability of the battery pack is unlikely whereas the predictability might be noticeably reduced. 10.14279/depositonce-12657 e5e3d993-eb32-46aa-8ee9-b5f168659224 9783798332416 9783798332423 13 218 Berlin open access
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The success of battery electric vehicles mainly depends on the reliability and predictability of the battery pack connected to different power electronics with high frequency current ripple inducing switching patterns. In this thesis, the influence of these current ripple on battery ageing and battery operating behaviour is investigated by cyclic ageing tests on lithium-ion-cells with induced high frequency current ripple by a specifically developed cell tester. Comparing the most important ageing parameters, i.~e. capacity loss, inner resistance and polarisation behaviour, yields only a minor and mostly neglectable influence of current ripple on battery ageing, compared to more severe impacts such as cycle depth. Moreover, the direct link between the ageing parameters is confirmed and independent from the cell's cycling. However, the measurements also show that the practical cycle depth is limited due to current ripple and suggest a quantitative connection between the size of the current ripple and the lowered reachable cycle depths. Hence, a severe impact of current ripple on the reliability of the battery pack is unlikely whereas the predictability might be noticeably reduced.
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Universitätsverlag der Technischen Universität Berlin
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2022
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https://verlag.tu-berlin.de/produkt/978-3-7983-3241-6/
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1771297567902007297
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