The invention relates to the technical field of power batteries, and discloses a pre-undervoltage strategy control method, device and system for a vehicle battery pack and a vehicle. The actual power capability value of the vehicle battery pack is calculated based on the data of the vehicle battery pack by determining the required power value of the vehicle running on the current remaining road and the possible running working condition; if it is judged that the vehicle demand power value is larger than the actual power value of the vehicle battery pack, the vehicle battery pack output power limiting range can be determined based on the vehicle demand power value, the actual power capacity value of the vehicle battery pack and the condition for ensuring that the vehicle battery pack does not have the undervoltage fault; according to the method and the device, the power limiting value corresponding to each possible driving working condition is determined, the output power of the vehicle battery pack is adjusted based on the actual driving working condition of the vehicle, the pre-undervoltage grade can be simplified, the undervoltage threshold value is intelligently recognized, the output power is dynamically adjusted, and power limiting is reasonably carried out to improve user experience.

    本发明涉及动力电池技术领域,公开了车辆电池包的预欠压策略控制方法、装置、系统及车辆,本发明通过确定当前剩余道路行驶的车辆需求功率值和可能发生的行车工况以及基于车辆电池包数据计算车辆电池包实际功率能力值,若判断车辆需求功率值大于车辆电池包实际功率值,则可基于车辆需求功率值、车辆电池包实际功率能力值以及保证车辆电池包不发生欠压故障的条件,确定车辆电池包输出功率限制范围,并确定每一可能发生的行车工况对应的输出功率限制值,基于车辆发生的实际行车工况,调整车辆电池包的输出功率,可将预欠压等级简化,智能欠压阈值识别、动态输出功率调整,合理进行动力限制以提升用户体验。


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    Title :

    Pre-undervoltage strategy control method, device and system for vehicle battery pack and vehicle


    Additional title:

    车辆电池包的预欠压策略控制方法、装置、系统及车辆


    Contributors:
    NAN KAIKAI (author) / ZHANG JINTAI (author) / DUAN MINGHAO (author) / YANG XIAOHANG (author)

    Publication date :

    2024-12-06


    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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