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Electrochemical-calorimetric studies on different lithium-ion cells

Lei, Boxia; Melcher, Andreas; Ziebert, Carlos; Rohde, Magnus; Seifert, Hans Jürgen

Abstract (englisch):
The lithium-ion batteries used in current electric vehicles evidently have reserves. When the capacity in each cell was optimally utilized, more energy could be put in and delivered again. Thus, the driving range of electric vehicles could be significantly increased.
In this work, commercial lithium-ion pouch cells were cycled at varying C-rates under isoperibolic and adiabatic conditions in an accelerating rate calorimeter (ARC) with external battery cycler to investigate their performance and their thermal behavior. A thermal camera was also used to investigate the heat effects and the local temperature distribution during cycling in more details.
Different factors that have influence on the performance of energy storage such as temperature, charging/discharging current and state of charge (SOC) have been studied. The isoperibolic investigations were performed at specific temperatures in the range from 25 to 60 °C. The results show that the applied environmental temperature did not largely influence the battery thermal behavior. Both isoperibolic and adiabatic tests were performed at different charging/discharging rates in the range from C/4 to 3C. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000084899
Veröffentlicht am 30.07.2018
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2018
Sprache Englisch
Identifikator ISBN: 978-3-7315-0753-6
ISSN: 1869-9669
KITopen-ID: 1000084899
HGF-Programm 37.01.02 (POF III, LK 01) Components and Cells
Erschienen in Ideen und Innovationen für die Energie von morgen : Wissenschaftliche Beiträge des KIT zu den Jahrestagungen 2014, 2016 und 2017 des KIT-Zentrums Energie. Ed.: W. Breh
Verlag KIT Scientific Publishing
Seiten 9-16
Serie KIT Scientific Reports ; 7747
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