The invention belongs to the technical field of automobile power batteries, and discloses a power battery thermal management system and a power battery thermal management control method. The system comprises an expansion box, an electric water pump, a power battery, a cooling module, a first electromagnetic valve, a second electromagnetic valve, a heat exchanger integrated with an expansion valve, a third electromagnetic valve, an air conditioner compressor and a condenser, a fuel oil heater assembly and a fourth electromagnetic valve. The control method utilizes the system and comprises the following steps: acquiring the temperature Tb of cooling liquid at the inlet of a power battery; and if the temperature Tb of the cooling liquid at the inlet of the power battery is greater than the lower limit temperature Tb0 at the inlet of the power battery, selectively opening a first circulation path or a second circulation path. The thermal management system ensures that the battery works at a proper temperature, and the cooling module, the heat exchanger integrated with the expansion valve and the fuel heater assembly can be flexibly arranged according to conditions and are not limited by the space of the whole vehicle, so that the whole vehicle is flexible in arrangement and high in space utilization rate.

    本发明属于汽车动力电池技术领域,公开了一种动力电池热管理系统及动力电池热管理控制方法,该系统包括膨胀箱、电动水泵、动力电池、冷却模块、第一电磁阀、第二电磁阀、集成膨胀阀的热交换器、第三电磁阀、空调压缩机及冷凝、燃油加热器总成和第四电磁阀。该控制方法,利用上述系统,包括以下步骤:获取动力电池的入口处的冷却液温度Tb;若动力电池的入口处的冷却液温度Tb大于动力电池的入口处的下限温度Tb0,则选择性开启第一循环通路或第二循环通路。该热管理系统保证电池在适宜的温度下进行工作,而且冷却模块、集成膨胀阀的热交换器、燃油加热器总成可以根据情况灵活布置,不受整车空间限制整车布置灵活,空间利用率高。


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    Title :

    Power battery thermal management system and power battery thermal management control method


    Additional title:

    动力电池热管理系统及动力电池热管理控制方法


    Contributors:
    WANG YAJUAN (author) / PAN ZELIN (author) / XUE JIANSHUAI (author) / ZHAO WENCHANG (author) / QIU PENGCHENG (author) / WEI ZEXIN (author) / WANG HONGZHI (author) / YU XIAOFENG (author)

    Publication date :

    2021-05-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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