EPE Association: EPE 2022 - LS2a: Invited Lectures

EPE 2022 - LS2a: Invited Lectures - Batteries in Power Electronics
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 12: > EPE 2022 - LS2a: Invited Lectures - Batteries in Power Electronics

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   Impact of high frequency current pulses on battery ageing
By Julia KOWAL [View]
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Abstract: In almost all applications, lithium-ion batteries are used in combination with power electronics. Theoccurring high frequency ripple currents are typically reduced by using DC link capacitors. On theother hand, it is assumed that frequencies in the kHz range do not affect ageing of batteries because it is outside the frequency range of electrochemical processes, which would mean that the capacitorcould possibly also be reduced. However, still the number of investigations, especially based onautomotive batteries, is quite limited. This presentation will give an overview of published ageing tests that investigate the influence of ripple currents on battery ageing. Additionally, our own results from 18650 cells and automotive cells from the project SiCWell are presented, which show an impact of different ripple parameters on the lifetime of the cell.

   Impact of power electronics on battery operation
By Dirk Uwe SAUER [View]
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Abstract: Lithium-ion batteries are nowadays offered in a large number of different cell designs and materialcombinations. This results in a wide range of performance parameters. However, in almost all casesbatteries are used together with power electronic converters and a central question is the interactionbetween the converters and the batteries. This can for example be the influence of ripple currents orthe implementation of impedance diagnostics. In the end, this is also the question of the need forsmoothing elements of the power electronics on the battery side. This presentation will give an overview of the influence of ripple currents on battery cells and their application for electrochemical impedance spectroscopy. For this purpose, the structure of the battery cell is used to show theoretically, which influences arise and results of experimental investigations are presented.

   Trends in Power Electronics and Batteries for Electrified Vehicle Infrastructure
By Torsten LEIFERT [View]
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Abstract: A tremendous growth in the quantity and diversity of electric vehicles is currently occurring. Differentvehicle platforms have been progressively developed in recent years, and this development continuestoday. Among the most important questions is where and how to charge the vehicles. In Germany, itis expected that up to 15 million BEV will be on the roads by 2030. This presentation will give an overview of the platforms, system functions and technical requirements for charging. Solutions for wall boxes and their inner circuitry will also be presented. Based on the use cases V2H and V2G, some trends in power electronics and options for storage systems will be discussed.

EPE 2022 - LS2a: Invited Lectures - Batteries in Power Electronics
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2022 ECCE Europe - Conference > EPE 2022 - Topic 12: > EPE 2022 - LS2a: Invited Lectures - Batteries in Power Electronics
	[return to parent folder]

	Impact of high frequency current pulses on battery ageing By Julia KOWAL	[View] [Download]
Abstract: In almost all applications, lithium-ion batteries are used in combination with power electronics. Theoccurring high frequency ripple currents are typically reduced by using DC link capacitors. On theother hand, it is assumed that frequencies in the kHz range do not affect ageing of batteries because it is outside the frequency range of electrochemical processes, which would mean that the capacitorcould possibly also be reduced. However, still the number of investigations, especially based onautomotive batteries, is quite limited. This presentation will give an overview of published ageing tests that investigate the influence of ripple currents on battery ageing. Additionally, our own results from 18650 cells and automotive cells from the project SiCWell are presented, which show an impact of different ripple parameters on the lifetime of the cell.

	Impact of power electronics on battery operation By Dirk Uwe SAUER	[View] [Download]
Abstract: Lithium-ion batteries are nowadays offered in a large number of different cell designs and materialcombinations. This results in a wide range of performance parameters. However, in almost all casesbatteries are used together with power electronic converters and a central question is the interactionbetween the converters and the batteries. This can for example be the influence of ripple currents orthe implementation of impedance diagnostics. In the end, this is also the question of the need forsmoothing elements of the power electronics on the battery side. This presentation will give an overview of the influence of ripple currents on battery cells and their application for electrochemical impedance spectroscopy. For this purpose, the structure of the battery cell is used to show theoretically, which influences arise and results of experimental investigations are presented.

	Trends in Power Electronics and Batteries for Electrified Vehicle Infrastructure By Torsten LEIFERT	[View] [Download]
Abstract: A tremendous growth in the quantity and diversity of electric vehicles is currently occurring. Differentvehicle platforms have been progressively developed in recent years, and this development continuestoday. Among the most important questions is where and how to charge the vehicles. In Germany, itis expected that up to 15 million BEV will be on the roads by 2030. This presentation will give an overview of the platforms, system functions and technical requirements for charging. Solutions for wall boxes and their inner circuitry will also be presented. Based on the use cases V2H and V2G, some trends in power electronics and options for storage systems will be discussed.