The invention provides a method for diagnosing the power shortage of an automobile storage battery. The method comprises the following steps: acquiring a first storage battery current value and a first storage battery voltage value; when the current value of the first storage battery is smaller than or equal to a first current threshold value, whether a first power shortage fault exists or not is judged; the step of judging whether the first power shortage fault exists or not comprises the steps of determining the total resistance value of a line where the storage battery is located according to the first storage battery current value and the first storage battery voltage value; obtaining the internal resistance value of the storage battery according to the difference between the total resistance value of the line where the storage battery is located and the vehicle-mounted line resistance value and the vehicle-mounted electric appliance resistance value; and comparing the internal resistance value of the storage battery with a preset resistance value, and when the internal resistance value of the storage battery is greater than the preset resistance value, determining that the first power-lack fault is storage battery aging and/or storage battery overdischarge. According to the method and the device for diagnosing the power shortage of the automobile storage battery, the power shortage fault of the storage battery can be quickly and accurately positioned as the aging of the storage battery and/or the excessive discharge of the storage battery by using the vehicle-mounted network information of the automobile.
本发明提供一种汽车蓄电池亏电诊断方法,包括:获取第一蓄电池电流值和第一蓄电池电压值;当第一蓄电池电流值小于等于第一电流阈值时,判断是否存在第一亏电故障;判断是否存在第一亏电故障的步骤包括:根据第一蓄电池电流值和第一蓄电池电压值确定蓄电池所在线路的总电阻值;根据蓄电池所在线路的总电阻值与车载线路电阻值、车载用电器电阻值的差值,获取蓄电池内阻值;将蓄电池内阻值与预设电阻值进行比较,当蓄电池内阻值大于预设电阻值,确定第一亏电故障为蓄电池老化和/或蓄电池过量放电。本发明的汽车蓄电池亏电诊断方法及装置能够应用汽车自身的车载网络信息快速、精确地将蓄电池亏电故障定位为蓄电池老化和/或蓄电池过量放电。
Method and device for diagnosing power shortage of automobile storage battery
汽车蓄电池亏电诊断方法及装置
06.08.2024
Patent
Elektronische Ressource
Chinesisch
Europäisches Patentamt | 2022
|Automobile low-voltage storage battery power shortage protection control method and device
Europäisches Patentamt | 2022
|Automobile storage battery power shortage diagnosis method, signal analysis device and medium
Europäisches Patentamt | 2024
|Automobile storage battery power shortage protection circuit and control method thereof
Europäisches Patentamt | 2025
|Automobile storage battery electricity shortage alarm method and system
Europäisches Patentamt | 2025
|