The invention relates to a voltage measuring method for an on-board electrical system (100) of a vehicle, the on-board electrical system (100) comprising a battery pack (10) having a plurality of battery cells (2) and at least one sub-electrical system (20, 30) which can be coupled to the battery pack (10) via protection means (SH +, SH-, SL +, SL-). According to the invention, the voltage measuring method comprises the following method steps: in a first calibration operation when the protection means (SH +, SH-, SL +, SL-) are switched off:-measuring the cell voltage (UZ) of the individual battery cell (2); calculating a pack voltage (UP) of the battery pack (10) by means of the measured cell voltage (UZ); -measuring a pack voltage (UP) of the battery pack (10); calculating a first correction factor for the group voltage (UP) by means of the calculated group voltage (UP) and the measured group voltage (UP).
本发明涉及一种用于车辆的车载电网(100)的电压测量方法,其中所述车载电网(100)包括带有多个电池电芯(2)的电池组(10)和至少一个子电网(20、30),所述至少一个子电网(20、30)能够通过保护器件(SH+、SH‑、SL+、SL‑)与所述电池组(10)耦接。根据本发明,所述电压测量方法包括以下方法步骤:在保护器件(SH+、SH‑、SL+、SL‑)断开时的第一校准运行中:‑测量单个电池电芯(2)的电芯电压(UZ);‑借助于测量到的电芯电压(UZ)计算所述电池组(10)的组电压(UP);‑测量所述电池组(10)的组电压(UP);‑借助于计算出的组电压(UP)和测量到的组电压(UP)计算针对组电压(UP)的第一校正因子。
Voltage measuring method and operating method for on-board electrical system of vehicle
用于车辆的车载电网的电压测量方法和运行方法
2024-05-17
Patent
Electronic Resource
Chinese
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