The invention is suitable for the technical field of vehicles, and provides a battery remaining capacity correction method and device, a vehicle and a storage medium. The battery remaining capacity correction method comprises the following steps: acquiring the discharge voltage, the discharge current and the remaining capacity of a first single battery; the first single battery is the single battery with the minimum voltage value in the battery pack; if the discharge voltage of the first single battery is smaller than the discharge cut-off voltage and the discharge current of the first single battery is smaller than the preset current, determining the open-circuit voltage of the first single battery according to the discharge voltage and the polarization voltage of the first single battery; if the open-circuit voltage of the first single battery is smaller than the preset open-circuit voltage, correcting the residual electric quantity of the first single battery to be zero; the preset open-circuit voltage is the corresponding open-circuit voltage when the residual electric quantity of the single battery in the battery pack is zero. The problem that the service life of the battery is affected due to the fact that the remaining capacity displayed by the battery is high and the battery is discharged to the tail end and easily causes a battery undervoltage fault can be solved.
本申请适用于车辆技术领域,提供了一种电池剩余电量修正方法、装置、车辆及存储介质。电池剩余电量修正方法包括:获取第一单体电池的放电电压、第一单体电池的放电电流和第一单体电池的剩余电量;第一单体电池为电池包中电压值最小的单体电池;若第一单体电池的放电电压小于放电截止电压且第一单体电池的放电电流小于预设电流,根据第一单体电池的放电电压和极化电压,确定第一单体电池的开路电压;若第一单体电池的开路电压小于预设开路电压,将第一单体电池的剩余电量修正为零;预设开路电压为电池包中单体电池的剩余电量为零时对应的开路电压。可以解决电池显示的剩余电量偏高,电池放电至末端容易引发电池欠压故障,影响电池寿命的问题。
Battery remaining capacity correction method and device, vehicle and storage medium
电池剩余电量修正方法、装置、车辆及存储介质
2025-01-03
Patent
Electronic Resource
Chinese
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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|European Patent Office | 2021
|REMAINING BATTERY CAPACITY CALCULATION SYSTEM AND REMAINING BATTERY CAPACITY CALCULATION METHOD
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