Zhang, S., Zuo, P., & Fan, Z. (2025). Non‐Destructive Monitoring of Internal Temperature Distribution in Prismatic Li‐Ion Battery Cells with Ultrasound Tomography. Advanced Materials Technologies, 10(19). Portico. https://doi.org/10.1002/admt.202500750
Abstract:
AbstractLarge prismatic cells are increasingly being used as the primary power source in transportation applications. Effective online thermal management of these cells is crucial for ensuring safety and maximizing performance. However, significant discrepancies between surface and internal temperatures make it difficult to detect internal thermal anomalies promptly, which hinders effective thermal management and increases the risk of irreversible thermal hazards. This paper introduces an innovative technology for thermal management in prismatic Li‐ion batteries. By exploiting the temperature sensitivity of ultrasound velocity and applying tomographic reconstruction based on surrounding measurements, the technology enables detailed cross‐sectional thermal imaging. This allows for non‐destructive, real‐time visualization of internal temperatures. Furthermore, with its compact design and cost‐effectiveness, this technology is suitable for in‐situ deployment, offering a precise feedback mechanism for online thermal management. Demonstrations conducted during continuous discharging scenarios have shown that the system can identify high‐temperature regions near the tabs that remain undetected by surface thermocouples. This advancement has the potential to significantly reduce the risk of fires or explosions while enhancing battery performance in electric vehicles and other applications involving battery cells.
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Publisher Copyright
Funding Info:
This research / project is supported by the A*STAR - Career Development Fund
Grant Reference no. : C222812020
This research / project is supported by the Ministry of Education - Academic Research Fund Tier 1
Grant Reference no. : RG149/23
Description:
This is the peer reviewed version of the following article: Zhang, S., Zuo, P., & Fan, Z. (2025). Non‐Destructive Monitoring of Internal Temperature Distribution in Prismatic Li‐Ion Battery Cells with Ultrasound Tomography. Advanced Materials Technologies, 10(19). Portico. https://doi.org/10.1002/admt.202500750, which has been published in final form at https://doi.org/10.1002/admt.202500750. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.