The invention provides a new energy vehicle power supply system management method, and relates to the technical field of new energy vehicle battery control, and the method comprises the steps: obtaining the rated power Pr, the actual working voltage Vs, and the actual working current Ia of a battery pack; the actual power Ps and the open-circuit power threshold P'of the battery pack are calculated, Ps = Vs * Ia, # imgabs0 # alpha meets 0 lt; [alpha] [lt]; 1; # imgabs1 # p is the power corresponding to a single battery to be detected in the battery pack; the actual power Ps is compared with beta times of rated power Pr, and beta is larger than or equal to 1.0 and smaller than or equal to 4.0; if Ps is smaller than or equal to beta * Pr, the actual power Ps and an open-circuit power threshold P'are judged, if the actual power Ps is smaller than or equal to the open-circuit power threshold P ', it is judged that an open circuit is formed, and if the actual power Ps is larger than the open-circuit power threshold P', it is judged that the open circuit is not formed. According to the method provided by the invention, whether a certain single battery in the battery pack has an open circuit or not can be judged more quickly and accurately, and the battery performance loss and potential safety risk caused by false alarm can be effectively avoided.

    本申请提供了一种新能源车供电系统管理方法,涉及新能源车电池控制技术领域,该方法包括:获取电池组的额定功率Pr、实际工作电压Vs、实际工作电流Ia;计算电池组的实际功率Ps和开路功率阈值P′,其中,Ps=Vs×Ia,#imgabs0#α满足:0<α<1;#imgabs1#p为电池组中待检测的单体电池所对应的功率;比较实际功率Ps与β倍额定功率Pr的大小,其中,β满足:1.0≤β≤4.0;若Ps≤β×Pr,则判断实际功率Ps与开路功率阈值P′的大小:若实际功率Ps小于或等于开路功率阈值P′,则判断为开路,若实际功率Ps大于开路功率阈值P′,则判断为未开路。本申请的方法,够更加快速且准确地判断电池组中某一单体电池是否存在开路,可以有效地避免误报而导致的电池性能损失和潜在的安全风险。


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    Title :

    New energy vehicle power supply system management method


    Additional title:

    一种新能源车供电系统管理方法


    Contributors:

    Publication date :

    2024-10-18


    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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