Embedded real-time fractional-order equivalent circuit model for internal resistance estimation of lithium-ion cells

Y Bensaad, F Friedrichs, T Baumhöfer, M Eswein… - Journal of Energy …, 2023 - Elsevier
This paper introduces a new on-board capable method for model-based estimation of the
internal resistance of lithium-ion cells. The method relates to a fractional-order electrical …

Artificial feature extraction for estimating state-of-temperature in lithium-ion-cells using various long short-term memory architectures

M Kopp, M Ströbel, A Fill, J Pross-Brakhage, KP Birke - Batteries, 2022 - mdpi.com
The temperature in each cell of a battery system should be monitored to correctly track aging
behavior and ensure safety requirements. To eliminate the need for additional hardware …

Modeling and experimental investigation of the interaction between pressure-dependent aging and pressure development due to the aging of lithium-ion cells

A Avdyli, A Fill, KP Birke - Batteries, 2023 - mdpi.com
In order to meet the increasing demands of the battery in terms of range, safety and
performance, it is necessary to ensure optimal operation conditions of a lithium-ion cell. In …

New semi-analytical model approach of the current distribution within parallel-connected lithium-ion cells

A Fill, T Schmidt, T Mader, R Llorente, A Avdyli… - Journal of Energy …, 2021 - Elsevier
Automotive batteries contain a high number of parallel-and serial-connected cells to fulfill
the energy and power requirements of electric vehicles. Due to current, State of Charge …

Influence of cell parameter differences and dynamic current stresses on the current distribution within parallel-connected lithium-ion cells

A Fill, T Schmidt, T Mader, R Llorente, A Avdyli… - Journal of Energy …, 2020 - Elsevier
To satisfy energy and power requirements of electric vehicles, traction batteries contain a
high number of parallel-as well as serial-connected lithium-ion cells. Due to cell …

Experimental investigations on current and temperature imbalances among parallel-connected lithium-ion cells at different thermal conditions

A Fill, T Mader, T Schmidt, A Avdyli, M Kopp… - Journal of Energy …, 2022 - Elsevier
In this article the influence of Cell to Cell Variances (CtCV) and the thermal design of the
battery on electrical and thermal cell imbalances are experimentally investigated for different …

Influence of the cell topology, thermal conditions and initial cell to cell variances on aging gradients among lithium-ion cells of a battery

A Fill, D Müller, KP Birke - 2021 IEEE 15th International …, 2021 - ieeexplore.ieee.org
Due to the power and energy demand of large-scale applications, like electric vehicles,
batteries consists of a high number of single cells connected in serial and parallel. Caused …

Statistical approach for continuous internal resistance estimation of lithium ion cells under dynamic loads

A Avdyli, A Fill, KP Birke - 2022 IEEE 21st Mediterranean …, 2022 - ieeexplore.ieee.org
To meet the requirements of electrified vehicles, such as durability, driving range, fast
charging and safety, an accurate and continuous estimation of the cell states on board is …

Impact of Cell to Cell Variances on the Current Distribution among two parallel Lithium-Ion Cells at constant Current Conditions

A Fill, D Müller, T Mader, A Avdyli… - 2021 IEEE 15th …, 2021 - ieeexplore.ieee.org
Batteries of electric vehicles contain a high number of serial-and parallel-connected cells in
order to fulfill the power and energy requirements. Due to Cell to Cell Variances (CtCV) …

Interaction of Temperature and Current Differences among parallel-connected Lithium-Ion Cells in Dependency of the thermal Battery Design

A Fill, KP Birke - 2022 IEEE 21st Mediterranean …, 2022 - ieeexplore.ieee.org
Automotive batteries contain a high number of lithium-ion cells connected in parallel and
serial to fulfill the power and energy demands of electrified vehicles. Cell to Cell Variances …