The invention discloses a power battery, an electric vehicle, and a battery thermal control method and system, which are used for preventing the heat of a thermal runaway battery cell from spreading to other battery cells and avoiding the influence on other battery cells. The power battery comprises at least one module unit composed of a plurality of battery cells, and one or more battery cells in the module unit are arranged in an independent protective cavity; heat insulation materials are arranged between the independent protection cavities, and the middle layer of the heat insulation materials is a fireproof layer. According to the power battery provided by the invention, when a certain battery cell is subjected to thermal runaway, the independent protection cavities and the fireproof layers between the cavities can prevent heat of the battery cell subjected to thermal runaway from spreading to other battery cells, so the influence on other battery cells is avoided, and the situation that the power battery is out of control and is on fire is also avoided.

    本申请公开了一种动力电池、电动汽车、电池热控制方法及系统,用以防止热失控的电芯的热量扩展蔓延至其他电芯,避免对其他电芯造成影响。所述动力电池包括:由多支电芯构成的至少一个模组单元,其中,模组单元中的一支或多支电芯置于独立防护腔体内;独立防护腔体之间设置有隔热材料,其中,隔热材料的中间层为耐火层。本申请所提供的动力电池的某一支电芯发生热失控时,独立防护腔体以及腔体之间的耐火层能够防止热失控的电芯的热量扩展蔓延至其他电芯,避免了对其他电芯造成影响,也避免造成动力电池的失控起火。


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    Title :

    Power battery, electric vehicle and battery thermal control method and system


    Additional title:

    一种动力电池、电动汽车、电池热控制方法及系统


    Contributors:
    WEN ZENGYOU (author) / TIAN YANFENG (author) / YAO SHUNYI (author) / HU DEPENG (author) / SHI TAO (author) / HU JINWEI (author)

    Publication date :

    2021-11-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    A62C FIRE-FIGHTING , Feuerbekämpfung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY




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