Patrick Höschele

An Impedance-based Finite Element Model as the Basis for Digital Twin Development for Ageing Prediction of Lithium-Ion Batteries

Tewelde Hailay Gebregeorgis, Kashif Raza, Mourouga Gaël, Nourhan Abdelrahman et autres

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Impact of temperature on Li-ion battery impedance and compensation strategies

Maximilian Schinagl, Markus Fasching, Patrick Höschele, Christian Ellersdorfer

Electrochemical impedance spectroscopy (EIS) is increasingly applied for the electrochemical characterization of Li-ion batteries as it can estimate the state of health (SOH), state of charge (SOC) and internal temperature. However, EIS measurements of batteries are highly sensitive to temperature, making it …

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Sensitivity of electrochemical impedance parameters for detecting changes in lithium-ion batteries due to acceleration shocks and local mechanical deformations

Emanuele Michelini, Jörg Moser, Patrick Höschele

Electrochemical Impedance Spectroscopy (EIS) offers valuable insights into cell characteristics and presents a promising tool for enhancing battery management systems (BMS) in electric vehicles (EVs). Its potential to detect safety-critical conditions, such as acceleration shocks and local mechanical deformations, along with its …

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Experimental Investigation of the Mechanical and Electrical Failure of the Electrode Tab of Lithium-Ion Pouch Cells Under Quasi-Static Mechanical Load

Patrick Höschele, Simon Franz Heindl, Christian Ellersdorfer

The electrode tabs of pouch cells are rigidly joined to the bus bar in a battery module to achieve an electric connection. The effect of abusive mechanical loads arising from crash-related deformation or the possible movement of battery cells caused by operation-dependent …

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Impact of an interrupted mechanical deformation on the electrical behavior of commercial lithium-ion pouch cells with varied aging histories for battery qualification

Emanuele Michelini, Christian Ellersdorfer, Ilie Hanzu, Günter Hofer et autres

This study investigates the influence of non-critical mechanical deformations, i.e., without internal short circuit (ISC), on lithium-ion batteries and examines their correlation with changes in electrical parameters. Nine commercial 50 Ah NMC111/Graphite pouch cells with diverse aging histories were electrochemically cycled before …

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Investigating the mechanical in-plane characteristics of lithium-ion pouch cells under crush loads

Markus Fasching, Stefan Grollitsch, Patrick Höschele, Alexander Schmid et autres

The mechanical properties and deformation behaviour of a Lithium-Ion pouch cell are crucial to evaluate its safety and form the basis for creating valid simulation models. However, little is known about the in-plane characteristics of pouch cells in a battery pack. This …

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Impact of an Interrupted Mechanical Deformation on the Electrical Behavior of Commercial Lithium-Ion Pouch Cells with Varied Aging Histories for Battery Qualification

Emanuele Michelini di San Martino, Christian Ellersdorfer, Ilie Hanzu, Günter Hofer et autres

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Effects of C-Rate on the Thermal Behavior of Commercial Lithium-Ion Pouch Cells with Different Aging Histories for a Successful Second-Life Transition

Emanuele Michelini, Patrick Höschele, Andreas Prielinger, Christian Ellersdorfer et autres

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Assessment of Health Indicators to Detect the Aging State of Commercial Second-Life Lithium-Ion Battery Cells through Basic Electrochemical Cycling

Emanuele Michelini, Patrick Höschele, Syed Muhammad Abbas, Christian Ellersdorfer et autres

Upon reaching certain limits, electric vehicle batteries are replaced and may find a second life in various applications. However, the state of such batteries in terms of aging and safety remains uncertain when they enter the second-life market. The aging mechanisms within …

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Implementing Reversible Swelling into the Numerical Model of a Lithium-Ion Pouch Cell for Short Circuit Prediction

Patrick Höschele, Christian Ellersdorfer

Mechanical simulation models have become crucial for understanding Li-ion battery failure and degradation mechanisms. However, existing safety assessment models lack the implementation of SOC-dependent thickness variations referred to as reversible swelling. Reversible swelling affects the applied preload force on a constrained pouch …

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Influence of reversible swelling and preload force on the failure behavior of a lithium-ion pouch cell tested under realistic boundary conditions

Patrick Höschele, Simon Franz Heindl, Simon Erker, Christian Ellersdorfer

Safety of lithium-ion batteries plays an important role in the context of advancing electrification for vehicles. Pouch cells suffer from low structural strength and are often constrained within a battery module to guarantee mechanical integrity. The effect of constraints and SOC-dependent changes …

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Experimental Investigation on Reversible Swelling Mechanisms of Lithium-Ion Batteries under a Varying Preload Force

Emanuele Michelini, Patrick Höschele, Simon Franz Heindl, Simon Erker et autres

The safety of lithium-ion batteries has to be guaranteed over the complete lifetime considering geometry changes caused by reversible and irreversible swellings and degradation mechanisms. An understanding of the pressure distribution and gradients is necessary to optimize battery modules and avoid local …

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