Volume 8, Issue 2 1900201
Full Paper

Model-Based Uncertainty Quantification for the Product Properties of Lithium-Ion Batteries

Vincent Laue

Vincent Laue

Institute of Energy and Process Systems Engineering, TU Braunschweig, Franz-Liszt-Strasse 35, D-38106 Braunschweig, Germany

Battery LabFactory Braunschweig (BLB), TU Braunschweig, D-38106 Braunschweig, Germany

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Oke Schmidt

Oke Schmidt

Institute of Energy and Process Systems Engineering, TU Braunschweig, Franz-Liszt-Strasse 35, D-38106 Braunschweig, Germany

Battery LabFactory Braunschweig (BLB), TU Braunschweig, D-38106 Braunschweig, Germany

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Henning Dreger

Henning Dreger

Battery LabFactory Braunschweig (BLB), TU Braunschweig, D-38106 Braunschweig, Germany

Institute for Particle Technology, TU Braunschweig, Volkmaroder Strasse 5, D-38104 Braunschweig, Germany

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Xiangzhong Xie

Xiangzhong Xie

Institute of Energy and Process Systems Engineering, TU Braunschweig, Franz-Liszt-Strasse 35, D-38106 Braunschweig, Germany

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Fridolin Röder

Fridolin Röder

Institute of Energy and Process Systems Engineering, TU Braunschweig, Franz-Liszt-Strasse 35, D-38106 Braunschweig, Germany

Battery LabFactory Braunschweig (BLB), TU Braunschweig, D-38106 Braunschweig, Germany

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René Schenkendorf

René Schenkendorf

Institute of Energy and Process Systems Engineering, TU Braunschweig, Franz-Liszt-Strasse 35, D-38106 Braunschweig, Germany

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Arno Kwade

Arno Kwade

Battery LabFactory Braunschweig (BLB), TU Braunschweig, D-38106 Braunschweig, Germany

Institute for Particle Technology, TU Braunschweig, Volkmaroder Strasse 5, D-38104 Braunschweig, Germany

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Ulrike Krewer

Corresponding Author

Ulrike Krewer

Institute of Energy and Process Systems Engineering, TU Braunschweig, Franz-Liszt-Strasse 35, D-38106 Braunschweig, Germany

Battery LabFactory Braunschweig (BLB), TU Braunschweig, D-38106 Braunschweig, Germany

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First published: 29 March 2019
Citations: 27

Abstract

A model-based uncertainty quantification (UQ) approach is applied to the manufacturing process of lithium-ion batteries (LIB). Cell-to-cell deviations and the influence of sub-cell level variations in the material and electrode properties of the cell performance are investigated experimentally and via modeling. The electrochemical battery model of the Doyle–Newman type is extended to cover the effect of sub-cell deviation of product properties of the LIB. The applied model is parameterized and validated using a stacked pouch cell containing Li(Ni1/3Co1/3Mn1/3)O2 (NMC) and graphite (LixC6). It is integrated into a sampling-based UQ framework. A nested point estimate method (PEM) is applied to a large number of independent normal distributed parameters. The simulations follow two consecutive nonideal manufacturing process steps: coating and calendering. The nested PEM provides a global sensitivity analysis that shows a change in sensitivity of the investigated parameters depending on the applied C-rate. Furthermore, the sub-cell level deviation of parameters in heterogeneous electrodes provokes a nonuniform current distribution in the cell. This alters the variance of the discharge capacity distribution. Therefore, sub-cell deviation has to be considered to quantify process uncertainties. The applied method is feasible and highly efficient for this purpose.

Conflict of Interest

The authors declare no conflict of interest.

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