Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells
Electric vehicles (EVs) have become a popular mode of transportation, with their performance depending on the ageing of the Li-ion batteries used to power them. However, it can be challenging and time-consuming to determine the capacity retention of a battery in service. A rapid and reliable test...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/176040 |
| _version_ | 1811689032987443200 |
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| author | Zhang, Shengyuan Zuo, Peng Yin, Xuesong Fan, Zheng |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Zhang, Shengyuan Zuo, Peng Yin, Xuesong Fan, Zheng |
| author_sort | Zhang, Shengyuan |
| collection | NTU |
| description | Electric vehicles (EVs) have become a popular mode of transportation, with
their performance depending on the ageing of the Li-ion batteries used to power
them. However, it can be challenging and time-consuming to determine the
capacity retention of a battery in service. A rapid and reliable testing method
for state of health (SoH) determination is desired. Ultrasonic testing
techniques are promising due to their efficient, portable, and non-destructive
features. In this study, we demonstrate that ultrasonic speed decreases with
the degradation of the capacity of an LFP prismatic cell. We explain this
correlation through numerical simulation, which describes wave propagation in
porous media. We propose that the reduction of binder stiffness can be a
primary cause of the change in ultrasonic speed during battery ageing. This
work brings new insights into ultrasonic SoH estimation techniques. |
| first_indexed | 2024-10-01T05:41:40Z |
| format | Journal Article |
| id | ntu-10356/176040 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:41:40Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1760402024-05-13T01:48:32Z Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells Zhang, Shengyuan Zuo, Peng Yin, Xuesong Fan, Zheng School of Mechanical and Aerospace Engineering Engineering State of health Ultrasonic testing Electric vehicles (EVs) have become a popular mode of transportation, with their performance depending on the ageing of the Li-ion batteries used to power them. However, it can be challenging and time-consuming to determine the capacity retention of a battery in service. A rapid and reliable testing method for state of health (SoH) determination is desired. Ultrasonic testing techniques are promising due to their efficient, portable, and non-destructive features. In this study, we demonstrate that ultrasonic speed decreases with the degradation of the capacity of an LFP prismatic cell. We explain this correlation through numerical simulation, which describes wave propagation in porous media. We propose that the reduction of binder stiffness can be a primary cause of the change in ultrasonic speed during battery ageing. This work brings new insights into ultrasonic SoH estimation techniques. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) This research is supported by MOE AcRF Tier 1, Singapore, RG69/22 and A*STAR, Singapore (project no. C210812038). 2024-05-13T01:48:31Z 2024-05-13T01:48:31Z 2024 Journal Article Zhang, S., Zuo, P., Yin, X. & Fan, Z. (2024). Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells. Journal of Energy Storage, 83, 110715-. https://dx.doi.org/10.1016/j.est.2024.110715 2352-152X https://hdl.handle.net/10356/176040 10.1016/j.est.2024.110715 2-s2.0-85183985961 83 110715 en RG69/22 C210812038 Journal of Energy Storage © 2024 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering State of health Ultrasonic testing Zhang, Shengyuan Zuo, Peng Yin, Xuesong Fan, Zheng Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells |
| title | Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells |
| title_full | Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells |
| title_fullStr | Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells |
| title_full_unstemmed | Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells |
| title_short | Exploring the correlation between ultrasound speed and the state of health of LiFePO4 prismatic cells |
| title_sort | exploring the correlation between ultrasound speed and the state of health of lifepo4 prismatic cells |
| topic | Engineering State of health Ultrasonic testing |
| url | https://hdl.handle.net/10356/176040 |
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