The invention discloses a battery pack thermal runaway monitoring system and an electric vehicle. The system comprises: a battery management system; an optical signal generator which is arranged in a battery pack and is used for emitting emergent light; a light reflecting part which is used for reflecting the emergent light to obtain reflected light; and a first optical signal receiver which is used for receiving the reflected light and converting the reflected light into an electric signal. The battery management system is electrically connected to the optical signal generator and the first optical signal receiver, processes an electric signal fed back by the first optical signal receiver, and judges whether a thermal runaway risk exists or not according to a processing result. Whether a thermal runaway event occurs in the battery pack or not is detected according to the principle that light intensity loss can be caused by obstruction of smoke to light, and timely and accurate detection can be performed when a small amount of smoke is generated at the initial stage of thermal runaway of the battery pack without being influenced by the environment. The monitoring system is arranged in the battery pack, so that the assembly of the battery pack is not influenced. The light source of the monitoring system is not limited and can be in any wave band, so that the system has better adaptability.

    本发明公开了一种电池包热失控监控系统及电动汽车,系统包括电池管理系统和设置于所述电池包内的:光信号发生器,用于发射出射光;反光部,用于反射所述出射光得到反射光;第一光信号接收器,用于接收反射光并转化为电信号;电池管理系统与光信号发生器和第一光信号接收器电连接,并对第一光信号接收器反馈的电信号进行处理,根据处理结果判定是否存在热失控风险。本发明根据烟雾对光线的阻隔会造成光强损失的原理来检测电池包是否发生热失控事件,在电池包热失控初期产生少量烟雾时就能够及时准确的检测,并且不受环境影响。本监控系统内置于电池包中,不会影响电池包的装配。本监控系统的光源没有限定,可以是任何波段,具有更好的适应性。


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    Titel :

    Battery pack thermal runaway monitoring system and electric vehicle


    Weitere Titelangaben:

    一种电池包热失控监控系统及电动汽车


    Beteiligte:
    MA ZHAO (Autor:in) / ZOU RONGLIAN (Autor:in) / ZHAO YUNDE (Autor:in) / ZHU HUACHANG (Autor:in)

    Erscheinungsdatum :

    2021-12-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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