Projects per year
Abstract
The behavior of lithium-ion cells under mechanical load is determined by both experiments and simulations. Extensive experimental data are required for the calibration and validation of complex numerical models. The possible experiments may differ in dimension (component, cell, cell stack and module) and in boundary conditions during the experiments (e.g. loading rate, sample condition). This study covers two aspects: The characterization and the modeling: First an overview on innovative experimental procedures is given. Second, it is shown how to quickly calibrate a macroscopic cell model against the experimental data. The calibration effort increases strongly with the number of calibration parameters as with the number of test configurations against which the model is calibrated. A new calibration procedure is presented to overcome this hurdle: First, a meta-model is created, covering the calibration parameters and calibration load cases, employing Proper Generalized Decomposition. Once the meta-model is adequately trained, the optimization of calibration parameters is conducted in real-time employing the meta-model. So a macroscopic cell model can be calibrated very quickly against a given set of experimental data sets. This is important because there are constant improvements and changes to the batteries in terms of materials, dimensions and structure.
Original language | English |
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Title of host publication | ASME 2023 International Mechanical Engineering Congress and Exposition, IMECE2023 |
Number of pages | 9 |
Volume | 7 |
DOIs | |
Publication status | Published - 2023 |
Event | 2023 ASME’s International Mechanical Engineering Congress and Exposition: IMECE 2023 - New Orleans, United States Duration: 29 Oct 2023 → 2 Nov 2023 |
Conference
Conference | 2023 ASME’s International Mechanical Engineering Congress and Exposition |
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Abbreviated title | IMECE 2023 |
Country/Territory | United States |
City | New Orleans |
Period | 29/10/23 → 2/11/23 |
Projects
- 1 Active
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21_FFG_SafeLIB - Safety Aspects of Lithium-Based Tractions Batteries Including the Qualification for Second Life Applications
Ellersdorfer, C. (Co-Investigator (CoI)), Wilkening, H. M. R. (Co-Investigator (CoI)) & Vorbach, S. (Co-Investigator (CoI))
1/04/21 → 31/03/25
Project: Research project