Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model
This work introduces a sophisticated impedance-based equivalent circuit model of the electrochemical processes inside a lithium-ion battery cell. The influence on the electrical voltage response is derived and merged into a mathematical calculation framework describing all fundamental phenomena insi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-09-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/10/9/314 |
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| author | Stephan Bihn Jonas Rinner Heiko Witzenhausen Florian Krause Florian Ringbeck Dirk Uwe Sauer |
| author_facet | Stephan Bihn Jonas Rinner Heiko Witzenhausen Florian Krause Florian Ringbeck Dirk Uwe Sauer |
| author_sort | Stephan Bihn |
| collection | DOAJ |
| description | This work introduces a sophisticated impedance-based equivalent circuit model of the electrochemical processes inside a lithium-ion battery cell. The influence on the electrical voltage response is derived and merged into a mathematical calculation framework describing all fundamental phenomena inside a battery. The parameters, whose sole influences on the electric behaviour cannot be separated at the cell level, are summarised to derive a model with purely electrical quantities. We significantly reduce the model order compared to a physicochemical model while ensuring a minimal approximation error. Utilising the findings from the model derivation, we develop a parameterisation procedure to separate the individual processes occurring in the battery and to support a hypothesis of the assignment to positive and negative electrodes based on several indicia. For this purpose, electrochemical impedance spectroscopy and correlation analysis are used to calculate the distribution of the time constants. The final parameterised model has physics-based parameter variations, which ensures that the simulation over broad ranges of temperatures and states of charge results in a reasonable voltage response. The model’s physical basis enables extrapolation beyond the measured operation area, and the model verification shows less than a 10 mV root mean square error over a wide range of operations. |
| format | Article |
| id | doaj-art-3c8d0797040e44dab5fbe680fc7bb13d |
| institution | OA Journals |
| issn | 2313-0105 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj-art-3c8d0797040e44dab5fbe680fc7bb13d2025-08-20T01:56:10ZengMDPI AGBatteries2313-01052024-09-0110931410.3390/batteries10090314Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman ModelStephan Bihn0Jonas Rinner1Heiko Witzenhausen2Florian Krause3Florian Ringbeck4Dirk Uwe Sauer5Chair for Electrochemical Energy Conversion and Storage Systems, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Campus Boulevard 89, 52074 Aachen, GermanyChair for Electrochemical Energy Conversion and Storage Systems, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Campus Boulevard 89, 52074 Aachen, GermanyChair for Electrochemical Energy Conversion and Storage Systems, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Campus Boulevard 89, 52074 Aachen, GermanyChair for Electrochemical Energy Conversion and Storage Systems, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Campus Boulevard 89, 52074 Aachen, GermanyChair for Electrochemical Energy Conversion and Storage Systems, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Campus Boulevard 89, 52074 Aachen, GermanyChair for Electrochemical Energy Conversion and Storage Systems, Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Campus Boulevard 89, 52074 Aachen, GermanyThis work introduces a sophisticated impedance-based equivalent circuit model of the electrochemical processes inside a lithium-ion battery cell. The influence on the electrical voltage response is derived and merged into a mathematical calculation framework describing all fundamental phenomena inside a battery. The parameters, whose sole influences on the electric behaviour cannot be separated at the cell level, are summarised to derive a model with purely electrical quantities. We significantly reduce the model order compared to a physicochemical model while ensuring a minimal approximation error. Utilising the findings from the model derivation, we develop a parameterisation procedure to separate the individual processes occurring in the battery and to support a hypothesis of the assignment to positive and negative electrodes based on several indicia. For this purpose, electrochemical impedance spectroscopy and correlation analysis are used to calculate the distribution of the time constants. The final parameterised model has physics-based parameter variations, which ensures that the simulation over broad ranges of temperatures and states of charge results in a reasonable voltage response. The model’s physical basis enables extrapolation beyond the measured operation area, and the model verification shows less than a 10 mV root mean square error over a wide range of operations.https://www.mdpi.com/2313-0105/10/9/314derivation of a physics-based electrical battery modelparameterisation results discussionlinking model parameters to physical processessimulation of the battery model over a wide operation range |
| spellingShingle | Stephan Bihn Jonas Rinner Heiko Witzenhausen Florian Krause Florian Ringbeck Dirk Uwe Sauer Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model Batteries derivation of a physics-based electrical battery model parameterisation results discussion linking model parameters to physical processes simulation of the battery model over a wide operation range |
| title | Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model |
| title_full | Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model |
| title_fullStr | Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model |
| title_full_unstemmed | Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model |
| title_short | Physics-Based Equivalent Circuit Model Motivated by the Doyle–Fuller–Newman Model |
| title_sort | physics based equivalent circuit model motivated by the doyle fuller newman model |
| topic | derivation of a physics-based electrical battery model parameterisation results discussion linking model parameters to physical processes simulation of the battery model over a wide operation range |
| url | https://www.mdpi.com/2313-0105/10/9/314 |
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