Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis
A battery model that has the capability of analyzing the internal non-uniformity of local state variables, including the state of charge (SOC), temperature and current density, is proposed in this paper. The model is built using a set of distributed parameter equivalent circuits. In order to validat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-10-01
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| Series: | Energies |
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| Online Access: | http://www.mdpi.com/1996-1073/9/11/865 |
| _version_ | 1811183914596696064 |
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| author | Dafen Chen Jiuchun Jiang Xue Li Zhanguo Wang Weige Zhang |
| author_facet | Dafen Chen Jiuchun Jiang Xue Li Zhanguo Wang Weige Zhang |
| author_sort | Dafen Chen |
| collection | DOAJ |
| description | A battery model that has the capability of analyzing the internal non-uniformity of local state variables, including the state of charge (SOC), temperature and current density, is proposed in this paper. The model is built using a set of distributed parameter equivalent circuits. In order to validate the accuracy of the model, a customized battery with embedded T-type thermocouple sensors inside the battery is tested. The simulated temperature conforms well with the measured temperature at each test point, and the maximum difference is less than 1 °C. Then, the model is applied to analyze the evolution processes of local state variables’ distribution inside the battery during the discharge process. The simulation results demonstrate drastic distribution changes of the local state variables inside the battery during the discharge process. The internal non-uniformity is originally caused by the resistance of positive and negative foils, while also influenced by the change rate of open circuit voltage and the total resistance of the battery. Hence, the factors that affect the distribution of the local state variables are addressed. |
| first_indexed | 2024-04-11T13:04:52Z |
| format | Article |
| id | doaj.art-3de2cd886ea6442790bde0d94cb59762 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T13:04:52Z |
| publishDate | 2016-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3de2cd886ea6442790bde0d94cb597622022-12-22T04:22:49ZengMDPI AGEnergies1996-10732016-10-0191186510.3390/en9110865en9110865Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity AnalysisDafen Chen0Jiuchun Jiang1Xue Li2Zhanguo Wang3Weige Zhang4National Active Distribution Network Technology Research Center, Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaNational Active Distribution Network Technology Research Center, Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaNational Active Distribution Network Technology Research Center, Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaNational Active Distribution Network Technology Research Center, Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaNational Active Distribution Network Technology Research Center, Beijing Jiaotong University, No. 3 Shang Yuan Cun, Haidian District, Beijing 100044, ChinaA battery model that has the capability of analyzing the internal non-uniformity of local state variables, including the state of charge (SOC), temperature and current density, is proposed in this paper. The model is built using a set of distributed parameter equivalent circuits. In order to validate the accuracy of the model, a customized battery with embedded T-type thermocouple sensors inside the battery is tested. The simulated temperature conforms well with the measured temperature at each test point, and the maximum difference is less than 1 °C. Then, the model is applied to analyze the evolution processes of local state variables’ distribution inside the battery during the discharge process. The simulation results demonstrate drastic distribution changes of the local state variables inside the battery during the discharge process. The internal non-uniformity is originally caused by the resistance of positive and negative foils, while also influenced by the change rate of open circuit voltage and the total resistance of the battery. Hence, the factors that affect the distribution of the local state variables are addressed.http://www.mdpi.com/1996-1073/9/11/865lithium ion batterydistributed parameter equivalent circuit modelinternal non-uniformity |
| spellingShingle | Dafen Chen Jiuchun Jiang Xue Li Zhanguo Wang Weige Zhang Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis Energies lithium ion battery distributed parameter equivalent circuit model internal non-uniformity |
| title | Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis |
| title_full | Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis |
| title_fullStr | Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis |
| title_full_unstemmed | Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis |
| title_short | Modeling of a Pouch Lithium Ion Battery Using a Distributed Parameter Equivalent Circuit for Internal Non-Uniformity Analysis |
| title_sort | modeling of a pouch lithium ion battery using a distributed parameter equivalent circuit for internal non uniformity analysis |
| topic | lithium ion battery distributed parameter equivalent circuit model internal non-uniformity |
| url | http://www.mdpi.com/1996-1073/9/11/865 |
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