Sensing systems for safe lithium-ion batteries

IF 40.9 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

Nature Electronics Pub Date : 2025-06-26 DOI:10.1038/s41928-025-01412-3

Yan Huang

引用次数: 0

Abstract

The sensing system consists of thin-film temperature and strain sensors and a wireless communication chip. The researchers — who are based at Beijing Institute of Technology, the University of Science and Technology Beijing, Tsinghua University, Westlake University, and the Chinese Academy of Sciences — integrated the system into commercial prismatic and cylindrical lithium-ion batteries. The sensor geometry was designed to match the size of the electrodes and tabs, and the modulation wave for the sensor signal was guided through the battery electrode to mitigate electromagnetic interference from the voltage signal of the batteries.

Using signals from the sensing system, as well as geometry-related models, abnormal temperature and strain signals in the ‘Swiss roll’ of the battery can be identified at an early stage, for failure diagnoses and warning. Experiments on commercial lithium-ion batteries showed that the sensing system causes only a slight impact in the electrochemical performance, with an average capacity after 1,000 cycles of 93.7% compared with 94.6% for batteries without the system.

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安全锂离子电池传感系统

传感系统由薄膜温度和应变传感器和无线通信芯片组成。来自北京理工大学、北京科技大学、清华大学、西湖大学和中国科学院的研究人员将该系统集成到商用棱柱形和圆柱形锂离子电池中。设计了与电极和标签尺寸匹配的传感器几何形状，并将传感器信号的调制波引导穿过电池电极，以减轻电池电压信号的电磁干扰。利用来自传感系统的信号，以及与几何相关的模型，可以在早期阶段识别电池“瑞士卷”中的异常温度和应变信号，用于故障诊断和警告。在商用锂离子电池上的实验表明，传感系统对电化学性能的影响很小，1000次循环后的平均容量为93.7%，而没有该系统的电池的平均容量为94.6%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nature Electronics Engineering-Electrical and Electronic Engineering

CiteScore

47.50

自引率

2.30%

发文量

159

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