The invention provides a vehicle and a cooling method and device for a power battery of the vehicle. The method comprises the following steps of obtaining the current driving working condition of thevehicle, the currently adopted driving mode and the target state of the current environment; determining an estimated temperature coefficient of a power battery in the vehicle according to the drivingworking condition, the driving mode and the target state; obtaining the current temperature of the power battery, and obtaining the estimated temperature of the power battery according to the currenttemperature and the estimated temperature coefficient; and performing cooling control on the power battery according to the estimated temperature. According to the cooling method disclosed by the invention, the power battery can be pre-estimated by combining the driving condition, the driving mode, the current temperature and the temperature of the power battery of the vehicle, and the battery isprevented from being cooled and controlled only according to the acquired temperature, so that the battery life attenuation and the energy consumption are reduced, and the battery discharge capacityis kept optimal; and the problem of untimely cooling caused by temperature acquisition lag and the phenomenon of thermal runaway caused by heating of the battery are prevented.

    本发明提出一种车辆及其动力电池的冷却方法、装置,所述方法包括以下步骤:获取车辆当前行驶的行驶工况、当前所采用的驾驶模式和当前环境所处的目标状态;根据行驶工况、驾驶模式和目标状态,确定车辆中动力电池的预估温度系数;获取动力电池的当前温度,根据当前温度和预估温度系数,获取动力电池的预估温度;根据预估温度,对动力电池进行冷却控制。本发明的冷却方法,能够结合车辆的行驶工况、驾驶模式、当前温度和动力电池的温度对动力电池进行预估,避免仅根据采集的温度对电池进行冷却控制,从而降低电池寿命衰减和能量的消耗,使电池放电能力保持最优,防止因温度采集滞后带来的冷却不及时问题,电池的发热出现热失控现象。


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    Titel :

    Vehicle and cooling method and device for power battery of vehicle


    Weitere Titelangaben:

    车辆及其动力电池的冷却方法、装置


    Beteiligte:
    ZHANG WENLING (Autor:in) / LIU JIANGUO (Autor:in) / ZHANG YUXIANG (Autor:in) / HUANG JIAN (Autor:in) / CHEN MINGWEN (Autor:in)

    Erscheinungsdatum :

    2021-03-09


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    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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