Search Results for author: Jason B. Siegel

Found 7 papers, 1 papers with code

Differential Voltage Analysis and Patterns in Parallel-Connected Pairs of Imbalanced Cells

no code implementations28 May 2024 Clement Wong, Andrew Weng, Sravan Pannala, Jeesoon Choi, Jason B. Siegel, Anna Stefanopoulou

This work introduces a novel method useful for identifying imbalances in capacity and resistance within a pair of parallel-connected cells using only voltage and current measurements from the pair.

Fault Detection

The Case for DeepSOH: Addressing Path Dependency for Remaining Useful Life

no code implementations20 May 2024 Hamidreza Movahedi, Andrew Weng, Sravan Pannala, Jason B. Siegel, Anna G. Stefanopoulou

The battery state of health (SOH) based on capacity fade and resistance increase is not sufficient for predicting Remaining Useful life (RUL).

Current imbalance in dissimilar parallel-connected batteries and the fate of degradation convergence

no code implementations16 Oct 2023 Andrew Weng, Hamidreza Movahedi, Clement Wong, Jason B. Siegel, Anna Stefanopoulou

This paper proposes an analytical framework describing how initial capacity and resistance variability in parallel-connected battery cells may inflict additional variability or reduce variability while the cells age.

Differential voltage analysis for battery manufacturing process control

1 code implementation13 Mar 2023 Andrew Weng, Jason B. Siegel, Anna Stefanopoulou

This work highlights the opportunities for leveraging voltage-based electrochemical metrics for online battery manufacturing process control.

Parallel-Connected Battery Current Imbalance Dynamics

no code implementations9 Nov 2022 Andrew Weng, Sravan Pannala, Jason B. Siegel, Anna G. Stefanopoulou

In this work, we derive analytical expressions governing state-of-charge and current imbalance dynamics for two parallel-connected batteries.

A Fast Diagnostic to Inform Screening of Discarded or Retired Batteries

no code implementations23 Mar 2022 Joseph A. Drallmeier, Clement Wong, Charles E. Solbrig, Jason B. Siegel, Anna G. Stefanopoulou

Initial experimental results from this study show a correlation between internal resistance and capacity which can be approximated with a linear fit, suggesting internal resistance measurements taken above a threshold cell terminal voltage may be a suitable initial screening metric for the capacity of retired cells without knowledge of the SOC.

An Algorithmic Safety VEST For Li-ion Batteries During Fast Charging

no code implementations17 Aug 2021 Peyman Mohtat, Sravan Pannala, Valentin Sulzer, Jason B. Siegel, Anna G. Stefanopoulou

The new approach is simpler to implement and can be used with any model to impose varying levels of constraints on variables pertinent to degradation, such as plating potential and mechanical stress.

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