The invention provides a system for preventing and delaying spreading of thermal runaway of a battery pack. The system comprises a battery management system BMS, a vehicle control unit, a thermal management controller, the battery pack, a battery pack cooling water loop and a battery pack refrigerant loop, wherein the battery pack cooling water loop and the battery pack refrigerant loop are coupled through a heat exchanger; a plurality of parallel-serial branches arranged in parallel are formed in the battery pack, and each parallel-serial branch is provided with a relay connected with a vehicle control unit. When a battery pack management system (BMS) monitors that any one or more series-parallel branches are in thermal runaway, a vehicle control unit is requested to cut off the series-parallel branches in thermal runaway through a relay, a thermal management controller is requested to control a battery pack cooling water loop and a battery pack refrigerant loop, the cooling capacity of a battery pack is adjusted to the maximum, and the battery pack is cooled to the maximum state. And thermal runaway spreading is prevented and delayed.

    本发明提供了一种阻延电池包热失控蔓延的系统,包括:电池管理系统BMS、整车控制器、热管理控制器、电池包以及通过换热器耦合的电池包冷却水回路和电池包制冷剂回路;电池包内形成有多条并联布置的混联支路,每一条所述混联支路上分别设置有一个同整车控制器连接的继电器;电池包管理系统BMS在监测到任意一条或多条混联支路出现热失控时,请求整车控制器通过继电器切断出现热失控的混联支路,并请求热管理控制器对电池包冷却水回路和电池包制冷剂回路进行控制,将对电池包的冷却能力调至最大,以阻延热失控蔓延。


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    Title :

    System for preventing and delaying spreading of thermal runaway of battery pack, control method and automobile


    Additional title:

    一种阻延电池包热失控蔓延的系统、控制方法及汽车


    Contributors:
    OUYANG MEI (author) / LIU WEIGUO (author) / DENG QINGPENG (author) / NA QI (author)

    Publication date :

    2022-06-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / 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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