Quirin Kellner
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View article: Non-linear frequency response analysis for assessment of the ageing history of lithium ion batteries: A combined simulation and experimental approach
Non-linear frequency response analysis for assessment of the ageing history of lithium ion batteries: A combined simulation and experimental approach Open
In this work, we present a novel approach for identifying the ageing history of lithium-ion batteries based on experimental nonlinear frequency response analysis (NFRA) measurements. A regression model, trained on simulated NFRA data, is s…
View article: Experimental Analysis of a Novel Cooling Material for Large Format Automotive Lithium-Ion Cells
Experimental Analysis of a Novel Cooling Material for Large Format Automotive Lithium-Ion Cells Open
Cooling the surface of large format batteries with solid conductive plates, or fins, has an inherent advantage of reducing the number of liquid seals relative to some mini-channel cold plate designs, as liquid is not passed through the num…
View article: High-performance electric vehicle duty cycles and their impact on lithium ion battery performance and degradation
High-performance electric vehicle duty cycles and their impact on lithium ion battery performance and degradation Open
High performance (HP) battery electric vehicle (BEV) and racing applications represent significantly different use cases than those associated with conventional consumer vehicles and road driving. The differences between HP-BEV use cases a…
View article: Duty-cycle characterisation of large-format automotive lithium ion pouch cells for high performance vehicle applications
Duty-cycle characterisation of large-format automotive lithium ion pouch cells for high performance vehicle applications Open
The long-term behaviour of lithium ion batteries in high-performance (HP) electric vehicle (EV) applications is not well understood due to a lack of suitable testing cycles and experimental data. As such a generic HP duty cycle (HP-C), rep…
View article: Battery cycle life test development for high-performance electric vehicle applications
Battery cycle life test development for high-performance electric vehicle applications Open
High Performance (HP) battery electric vehicle (BEV) and racing applications represent significantly different use cases than those associated with conventional consumer vehicles and road driving. The differences between HP use cases and t…
View article: A new approach to the internal thermal management of cylindrical battery cells for automotive applications
A new approach to the internal thermal management of cylindrical battery cells for automotive applications Open
Conventional cooling approaches that target either a singular tab or outer surface of common format cylindrical lithium-ion battery cells suffer from a high cell thermal resistance. Under an aggressive duty cycle, this resistance can resul…