The invention discloses a pre-undervoltage power control method and device for a power battery system, and relates to the technical field of electric automobiles, and the method comprises the steps: obtaining a current SOC value of the power battery system; obtaining the minimum temperature and the minimum voltage value of a single body in the power battery system; determining the allowable instantaneous discharge power of the power battery system based on the minimum monomer temperature and the current SOC value; and correcting the allowable instantaneous discharge power based on the minimum monomer temperature and the minimum monomer voltage value to obtain the target discharge power of the power battery system. According to the invention, the allowable instantaneous discharge power is corrected based on the minimum monomer temperature and the minimum monomer voltage value, so that the discharge power of the power battery system is controlled, the over-discharge problem of the battery can be prevented, and the safe driving experience of a user is improved.

    本发明公开了一种动力电池系统预欠压功率控制方法和装置,涉及电动汽车技术领域,包括:获取动力电池系统的当前SOC值;获取动力电池系统中的单体最低温度和最小单体电压值;基于单体最低温度和当前SOC值,确定动力电池系统的允许瞬时放电功率;基于单体最低温度和最小单体电压值,对允许瞬时放电功率进行修正,得到动力电池系统的目标放电功率。本发明基于单体最低温度和最小单体电压值,对允许瞬时放电功率进行修正,进而对动力电池系统的放电功率进行控制,能够防止电池出现过放问题,提升用户安全驾驶体验。


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    Title :

    Method and device for controlling pre-undervoltage power of power battery system


    Additional title:

    一种动力电池系统预欠压功率控制方法和装置


    Contributors:
    QI MINGZHU (author) / WU LIANGSHU (author)

    Publication date :

    2024-09-03


    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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