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Influence of electrode corrugation after calendering on the geometry of single electrode sheets in battery cell production

Mayer, Dominik 1; Schwab, Bastian 1; Fleischer, Jürgen 1
1 Institut für Produktionstechnik (WBK), Karlsruher Institut für Technologie (KIT)


Calendering is an essential process step in battery cell production. By selective compaction of the material, the performance of the battery cell can be optimized. During processing, corrugations can occur in the machine direction, which are characterized in this article in relation to the material systems LiNi$_{0.8}$Mn$_{0.1}$Co$_{0.1}$O$_2$ (NMC811) and LiNi$_{0.6}$Mn$_{0.2}$Co$_{0.2}$O$_2$ (NMC622) as well as the rate of compaction and the web tension. It is shown that the corrugations are strongly dependent on the rate of compaction. The material system and the web tension show a weaker influence on the corrugation characteristics. Subsequently, single electrode sheets are cut from the coils and their geometry is investigated. It is shown that the corrugation hardly propagates further into the single electrodes, which is explained with the storage time of the electrodes. Rather, the coil bending strongly influences the electrode sheet geometry. It is shown that the position of the conductor tab also has an important influence.

Verlagsausgabe §
DOI: 10.5445/IR/1000155024
Veröffentlicht am 21.02.2023
DOI: 10.1002/ente.202200870
Zitationen: 1
Zitationen: 3
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Produktionstechnik (WBK)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2194-4288, 2194-4296
KITopen-ID: 1000155024
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Energy Technology
Verlag Wiley-VCH Verlag
Band 11
Heft 5
Seiten Art.-Nr.: 2200870
Vorab online veröffentlicht am 02.12.2022
Schlagwörter battery cell manufacturing, calendering, geometric effects, single electrode sheets, singulation
Nachgewiesen in Web of Science
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