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An Experimental Setup with Alternating Current Capability for Evaluating Large Lithium-Ion Battery Cells
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems. KTH.ORCID iD: 0000-0002-9481-7366
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH).ORCID iD: 0000-0002-0108-1872
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.ORCID iD: 0000-0002-6283-7661
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering, Applied Electrochemistry.ORCID iD: 0000-0001-9203-9313
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2018 (English)In: Batteries-Basel, ISSN 2313-0105, Vol. 4, no 3, article id 38Article in journal (Refereed) Published
Abstract [en]

In the majority of applications using lithium-ion batteries, batteries are exposed to some harmonic content apart from the main charging/discharging current. The understanding of the effects that alternating currents have on batteries requires specific characterization methods and accurate measurement equipment. The lack of commercial battery testers with high alternating current capability simultaneously to the ability of operating at frequencies above 200 Hz, led to the design of the presented experimental setup. Additionally, the experimental setup expands the state-of-the-art of lithium-ion batteries testers by incorporating relevant lithium-ion battery cell characterization routines, namely hybrid pulse power current, incremental capacity analysis and galvanic intermittent titration technique. In this paper the hardware and the measurement capabilities of the experimental setup are presented. Moreover, the measurements errors due to the setup’s instruments were analysed to ensure lithium-ion batteries cell characterization quality. Finally, this paper presents preliminary results of capacity fade tests where 28 Ah cells were cycled with and without the injection of 21 A alternating at 1 kHz. Up to 300 cycles, no significant fade in cell capacity may be measured, meaning that alternating currents may not be as harmful for lithium-ion batteries as considered so far.

Place, publisher, year, edition, pages
MDPI, 2018. Vol. 4, no 3, article id 38
Keywords [en]
alternating current, aging, battery testing, electric vehicles, GITT, HPPC, life cycle, lithium-ion batteries, ripple, SOC
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-233339DOI: 10.3390/batteries4030038ISI: 000445206100009OAI: oai:DiVA.org:kth-233339DiVA, id: diva2:1239207
Note

QC 20180816

Available from: 2018-08-15 Created: 2018-08-15 Last updated: 2018-10-12Bibliographically approved

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Soares, RudiBessman, AlexanderWallmark, OskarLindbergh, GöranSvens, Pontus
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