The invention relates to a battery charge state estimation method and device, a vehicle and a storage medium, and relates to the technical field of computers. The method comprises the following steps: acquiring a voltage value of a battery at a current moment; determining a deviation angle corresponding to the voltage value at the current moment according to the voltage value at the current moment; wherein the deviation angle corresponding to the voltage value at the current moment is used for representing the relationship between the battery electric quantity corresponding to the voltage value at the current moment in the voltage characteristic curve of the battery and the voltage value at the current moment; the SOC value of the battery at the current moment is determined according to the mapping relation and the deviation angle corresponding to the voltage value at the current moment; wherein the mapping relation is a one-to-one correspondence relation between the deviation angle determined based on the voltage value of the battery in the operation process and the actual battery electric quantity and the SOC value. Therefore, the mapping relation between the deviation angle and the SOC value can reflect the actual operation condition of the battery more accurately, so that the estimation precision of the SOC value of the battery is improved.
本申请涉及一种电池荷电状态估算方法、装置、车辆及存储介质,涉及计算机技术领域。该方法包括:获取电池在当前时刻的电压值;并根据当前时刻的电压值,确定当前时刻的电压值对应的偏移角度;其中,当前时刻的电压值对应的偏移角度用于表征在电池的电压特性曲线中当前时刻的电压值对应的电池电量与当前时刻的电压值之间的关系;从而根据映射关系和当前时刻的电压值对应的偏移角度,确定电池在当前时刻的SOC值;其中,映射关系为基于电池在运行过程中的电压值和实际电池电量确定的偏移角度与SOC值之间的一一对应关系。由此,偏移角度和SOC值之间的映射关系可以更加准确地反映电池的实际运行情况,从而提高了电池SOC值的估算精度。
Battery charge state estimation method and device, vehicle and storage medium
一种电池荷电状态估算方法、装置、车辆及存储介质
09.08.2024
Patent
Elektronische Ressource
Chinesisch
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