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A comprehensive heat generation study of lithium titanate oxide-based lithium-ion batteries

Madani, Seyed Saeed 1; Schaltz, Erik; Kær, Søren Knudsen; Ziebert, Carlos ORCID iD icon 2
1 Karlsruher Institut für Technologie (KIT)
2 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

A precise interpretation of lithium-ion battery (LIB) heat generation is indispensable to the advancement and accomplishment of thermal management systems for different applications of LIB, including electric vehicles. The internal resistance of a lithium titanate oxide (LTO)-based LIB was determined at different state of charge (SOC) levels and current rates to understand the relationship between internal resistance and heat generation. Random and different pulse discharge current step durations were applied to consider the effect of different SOC interval levels on heat generation. The total generated heat was measured for different discharge rates and operating temperatures in a Netzsch IBC 284 calorimeter. It was seen that a 6.7% SOC decrease at high SOC levels corresponds to 0.377 Wh, 0.728 Wh, and 1.002 Wh heat generation for 26A, 52A, and 78A step discharge, both at 20 °C and 30 °C. However, a 1.85% SOC decrease at medium SOC levels corresponds already to 0.57 Wh, 0.76 Wh, and 0.62 Wh heat generation. It can be inferred that the impact of SOC level on heat generation for this cell is more prominent at a lower than at a higher SOC.


Verlagsausgabe §
DOI: 10.5445/IR/1000154346
Veröffentlicht am 10.01.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.11.2022
Sprache Englisch
Identifikator ISSN: 1742-6588, 1742-6596
KITopen-ID: 1000154346
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Journal of Physics: Conference Series
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 2382
Heft 1
Seiten Art.-Nr.: 012004
Projektinformation HELIOS (EU, H2020, 963646)
Bemerkung zur Veröffentlichung 23rd International Conference on Advanced Batteries, Accumulators and Fuel Cells (ABAF 2022) 21/08/2022 - 24/08/2022 Brno, Czechia
Nachgewiesen in Dimensions
Scopus
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere Energie
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