Impact Modeling and Testing of Pouch and Prismatic Cells
| Autor: | Jie Deng, Chulheung Bae, Inaki Caldichoury, Ian Smith, Theodore James Miller, Pierre L'Eplattenier, Phil Rairigh, Bapiraju Surampudi |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Thin layers Renewable Energy Sustainability and the Environment 020209 energy Compaction Mechanical engineering 02 engineering and technology Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Shear (sheet metal) Thermal 0202 electrical engineering electronic engineering information engineering Materials Chemistry Electrochemistry Model development Material properties Cell penetration Voltage |
| Zdroj: | Journal of The Electrochemical Society. 167:090550 |
| ISSN: | 1945-7111 0013-4651 |
| Popis: | Understanding battery response under impact is critical to improve the safety of electrified vehicles. Nevertheless, predicting the impact behaviors of batteries is not straightforward since a battery cell usually contains hundreds of thin layers with dramatically different material properties and multiple physical processes occur simultaneously during cell deformation. Here we utilized both empirical tests and numerical models to capture the failure process of pouch and prismatic cells in various impact scenarios. In each test, a cell was hit once by an indenter dropped from a certain height. During which the cell penetration, loading force, voltage and temperature were monitored to characterize the cell’s response. Meanwhile, numerical models were developed to capture the coupled mechanical, electrical, electrochemical and thermal responses of batteries. In these models, the cell bulk was treated as a homogeneous part to achieve computational efficiency required by large-scale simulations, and it was represented by the geologic cap model that allows both shear and compaction deformation. Simulation results showed agreement with experimental data in essential features of cell behaviors during impact. Details of the test setup, model development and cell failure behaviors are presented in this paper. Additionally, capabilities, limitations and future improvement of the battery safety modeling are discussed. |
| Databáze: | OpenAIRE |
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