The invention provides a power battery preheating control method and a vehicle, and belongs to the technical field of automobile control. Power battery preheating control is executed based on a thermal management system of the vehicle, when it is detected that the current temperature of a power battery circulating water path is smaller than or equal to the lower limit threshold value of the working temperature, it can be determined that the power battery needs to be preheated, and at the moment, refined preheating control is conducted on the power battery in combination with the current operation working condition of the vehicle. Specifically, if the vehicle is in a first operation working condition, the first multi-way valve and the second multi-way valve are controlled to be connected or disconnected according to the current temperature of the circulating water path of the power battery, so that the power battery is preheated. And if the vehicle is in the second operation working condition, the first multi-way valve and the second multi-way valve are controlled to be connected or disconnected according to the current charge state of the power battery so as to preheat the power battery. According to the method, the preheating control of the power battery can be matched with the vehicle operation condition, and the preheating control precision can be improved.

    本申请提出一种动力电池预热控制方法和车辆,属于汽车控制技术领域。动力电池预热控制基于车辆的热管理系统执行,该方法在检测到动力电池循环水路的当前温度小于等于工作温度的下限阈值时,可确定需要对动力电池进行预热,此时,结合车辆的当前运行工况对动力电池进行细化预热控制。具体地,若车辆处于第一运行工况,则根据动力电池循环水路的当前温度来控制第一多通阀和第二多通阀导通或断开,以此来对动力电池进行预热。而若车辆处于第二运行工况,则根据动力电池的当前荷电状态控制第一多通阀和第二多通阀导通或断开以此来对动力电池进行预热。该方法能够使得动力电池的预热控制与车辆运行工况相适配,可提高预热控制精度。


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    Title :

    Power battery preheating control method and vehicle


    Additional title:

    动力电池预热控制方法和车辆


    Contributors:
    LUO HAIPENG (author) / WU GUANGQUAN (author) / WANG JIAWU (author)

    Publication date :

    2024-03-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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