一种基于红外高光谱遥测的锂电池热失控气体监测方法

By using infrared hyperspectral telemetry technology and physical information neural networks, the problems of real-time monitoring and multi-component identification of thermal runaway gases in lithium batteries have been solved. This enables non-contact, long-distance, early warning and multi-component gas monitoring, and provides information on the gas plume distribution in lithium battery thermal runaway.

CN122409557APending Publication Date: 2026-07-17CIVIL AVIATION UNIV OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CIVIL AVIATION UNIV OF CHINA
Filing Date
2026-06-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing lithium battery thermal runaway gas monitoring technologies have limitations such as slow response, susceptibility to poisoning, difficulty in covering the entire space, and inability to monitor in real time, making it impossible to achieve non-contact, real-time, multi-component gas monitoring.

Method used

Using infrared hyperspectral remote sensing technology, a physical information neural network is constructed through continuous hyperspectral data acquisition. The characteristic absorption peaks of the gas are used to identify the gas plume region, and differential spectral correction and graph attention spatial aggregation are performed to output the gas column concentration, thus realizing non-contact, real-time monitoring of multi-component gases.

Benefits of technology

It enables non-contact, long-distance, real-time monitoring of thermal runaway gases in lithium batteries, has strong early warning capabilities, can identify multiple gases at extremely low concentrations, provides spatial distribution information of gas plumes, and has strong resistance to environmental interference.

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Abstract

本发明公开了一种基于红外高光谱遥测的锂电池热失控气体监测方法,包括:采集锂电池热失控全过程时序高光谱数据;提取热失控发生前的逐像素背景光谱,并基于预设气体的特征吸收峰识别热失控过程中的气体羽流区域,作为有效像素,将其光谱曲线作为目标光谱;扣除背景光谱及气体自身热辐射贡献,得到差分光谱;构建物理信息神经网络,以每个有效像素的目标光谱和差分光谱为输入,依次进行动态范围压缩、光谱自注意力加权增强、图注意力空间聚合及以固定物理量为先验的复合损失无监督训练,输出每个有效像素的气体柱浓度;根据柱浓度的时空分布评估气体产生与扩散过程。实现了锂电池热失控气体的非接触、实时、多组分监测及早期预警。
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