The invention discloses a lithium battery overheating protection system and method, and the method comprises the steps: loading a collected lithium battery image into an image processing module, carrying out the image processing of the battery thermal image, carrying out the analysis and extraction of the position characteristics of a high-temperature region of a battery, and calculating the area change of the high-temperature region of the battery, thereby obtaining the abnormal condition of the battery. And entering a thermal runaway alarm detection module according to the judged state posterior of the battery, and if the area size and the area change rate of the high-temperature region on the surface of the battery reach a thermal runaway alarm threshold value, performing thermal runaway alarm and displaying the abnormal condition of the battery and the high-temperature position characteristic of the lithium battery to judge the state of the lithium battery. After the overcharge, external short circuit and internal diaphragm thermal puncture states of the lithium battery are judged, the area change rate of a high-temperature area of the battery is detected, thermal runaway alarm is given, the detection accuracy of the thermal runaway state of the lithium battery is high, real-time monitoring and thermal runaway alarm of the battery are achieved, and the thermal runaway detection accuracy and overheating protection are improved.

    本发明公开了一种锂电池过热保护系统及方法,通过将采集到的锂电池成像载入到图像处理模块,对电池热成像进行图像处理,对电池高温区域位置特征进行分析和提取,对电池高温区域面积变化情况进行计算得到电池异常情况,根据判断出电池所处状态后验,进入热失控报警检测模块,若电池表面高温区域面积大小和面积变化率达到热失控报警阈值,则进行热失控报警并显示电池异常情况,锂电池的高温位置特征判断锂电池所处的状态,判断出锂电池过充、外部短路和内部隔膜热穿刺状态后,检测电池高温区域面积变化率并进行热失控报警,通过对锂电池热失控状态的检测准确率较高,实现对电池的实时监控和热失控报警,提高对热失控进行检测的精准度和过热保护。


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    Titel :

    Lithium battery overheating protection system and method


    Weitere Titelangaben:

    一种锂电池过热保护系统及方法


    Beteiligte:
    SHI WEI (Autor:in) / WEI HAIFENG (Autor:in) / XU JIAJUN (Autor:in)

    Erscheinungsdatum :

    2024-02-13


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G01J Messen der Intensität, der Geschwindigkeit, der spektralen Zusammensetzung, der Polarisation, der Phase oder der Pulscharakteristik von infrarotem, sichtbarem oder ultraviolettem Licht , MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme



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