The invention relates to a method and device for determining reserved energy of a vehicle and the vehicle, and solves the technical problems that a power battery is over-discharged due to load consumption, and the vehicle fails to be powered on and cannot run. The method comprises the following steps: acquiring a first state parameter under the conditions of vehicle power-off and fuel cell chemical reaction, and determining the power-off energy consumption of a vehicle according to the first state parameter; obtaining a second state parameter under the condition that the vehicle is powered on, and determining power-on consumption energy of the vehicle according to the second state parameter; and obtaining the pre-calibrated reserved energy of the power battery management system of the vehicle, correcting the reserved energy according to the power-on consumed energy and the power-off consumed energy, obtaining target reserved energy, wherein the target reserved energy is used for guaranteeing normal work of the fuel battery system in the power-on and power-off processes of the vehicle. Therefore, over-discharge of the power battery, damage to the power battery and starting failure of the vehicle caused by load consumption on the vehicle are avoided, and reasonable management of the energy of the whole vehicle is realized.

    本公开涉及一种车辆预留能量的确定方法、装置及车辆,解决了因负载消耗导致动力电池过放,以及车辆上电失败,无法行驶的技术问题。该方法包括:获取在车辆下电、燃料电池化学反应的情况下的第一状态参数,并根据第一状态参数确定车辆的下电消耗能量;获取在车辆上电的情况下的第二状态参数,并根据第二状态参数确定车辆的上电消耗能量;获取预先标定的车辆的动力电池管理系统的预留能量,根据上电消耗能量和下电消耗能量,对预留能量进行修正,得到目标预留能量,目标预留能量用于保证燃料电池系统在车辆上电、下电过程中的正常工作。避免了因车辆上的负载消耗导致的动力电池过放,对动力电池造成损坏,车辆启动失败,实现对整车能量的合理管理。


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    Title :

    Method and device for determining reserved energy of vehicle and vehicle


    Additional title:

    车辆预留能量的确定方法、装置及车辆


    Contributors:
    WU MAIQING (author) / LI XUEJING (author) / SONG DANDAN (author)

    Publication date :

    2021-04-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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