一种用于锂离子电池无创全寿命周期热诊断的超声测量方法

IF 30.8 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Lingshi Zhang, Zhongbao Wei, Chunxia Liu, Hongwen He, Kailong Liu, Guangmin Zhou, Yunhui Huang, Zhichuan J. Xu
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引用次数: 0

摘要

热特性和诊断对于锂离子电池的全生命周期安全性至关重要。然而,由于锂离子电池的密封结构和复杂的机理,传统的技术具有时滞和不连续性。在此,我们报告了一种创新的非侵入性方法,用于lib的全生命周期热监测。该方法首次将超声测量与传热分析相结合,准确地诊断了平均温度和热容,误差为2.81%。我们进一步将超声波特征与从早期孵化到热失控(TR)发生的特定失效阶段联系起来,为解释LIB的失效模式和早期预警TR提供了一种新的超声波方法。利用超声特征,与常用的电压线索相比,TR预警可提前32.47 min。在电池寿命的多个阶段,包括第一次和第二次寿命热稳定性评估、定期监测、故障分析和寿命终止预警等,超声波技术都具有很大的吸引力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
One ultrasonic measurement for non-invasive and whole-life-cycle thermal diagnosis of lithium-ion batteries
Thermal characterization and diagnosis are critical for the whole-life-cycle safety of lithium-ion batteries (LIBs). However, conventional techniques are time-delayed and discontinuous due to the sealed structure and intricate mechanisms of LIB. Herein we report an innovative non-invasive approach for whole-life-cycle thermal monitoring of LIBs. For the first time, our approach combines ultrasonic measurements and heat transfer analysis to diagnose the average temperature and heat capacity accurately, with an error of 2.81%. We furthermore link ultrasonic features to specific failure stages from early incubation to the onset of thermal runaway (TR), paving a new ultrasonic way to interpret the failure modes and early-warn the TR of LIB. Using the ultrasonic features, the TR warning can be 32.47 min ahead compared with commonly-used voltage clues. The ultrasound-enabled approaches are attractive to multiple stages in battery life, including the first- and second-life thermal stability evaluation, regular monitoring, failure analysis and end-of-life early warning.
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来源期刊
Energy & Environmental Science
Energy & Environmental Science 化学-工程:化工
CiteScore
50.50
自引率
2.20%
发文量
349
审稿时长
2.2 months
期刊介绍: Energy & Environmental Science, a peer-reviewed scientific journal, publishes original research and review articles covering interdisciplinary topics in the (bio)chemical and (bio)physical sciences, as well as chemical engineering disciplines. Published monthly by the Royal Society of Chemistry (RSC), a not-for-profit publisher, Energy & Environmental Science is recognized as a leading journal. It boasts an impressive impact factor of 8.500 as of 2009, ranking 8th among 140 journals in the category "Chemistry, Multidisciplinary," second among 71 journals in "Energy & Fuels," second among 128 journals in "Engineering, Chemical," and first among 181 scientific journals in "Environmental Sciences." Energy & Environmental Science publishes various types of articles, including Research Papers (original scientific work), Review Articles, Perspectives, and Minireviews (feature review-type articles of broad interest), Communications (original scientific work of an urgent nature), Opinions (personal, often speculative viewpoints or hypotheses on current topics), and Analysis Articles (in-depth examination of energy-related issues).
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