Battery balancing method, system, vehicle, storage medium and electronic device

Abstract

The disclosure relates to a battery equalization method and system, a vehicle, a storage medium, and an electronic device. The method includes steps: obtaining a time change rate of each single battery in a battery pack; obtaining a reference time change rate required by equalization; determining a target equalization duration of a to-be-equalized single battery according to the time change rate of the to-be-equalized single battery in the battery pack, the reference time change rate, and a preset equalization duty ratio, wherein the equalization duty ratio is a ratio of an equalization periodin a unit period to the unit period, and the unit period comprises the equalization period and a sampling period; and controlling equalization of the to-be-equalized single battery in the equalization period of the unit period according to the target equalization duration.

Description

technical field [0001] The present disclosure relates to the technical field of control, and in particular, relates to a battery balancing method, system, vehicle, storage medium, and electronic equipment. Background technique [0002] Large-capacity batteries that provide power energy for electric vehicles are often called power batteries. Vehicle power batteries generally consist of multiple single cells connected in series to form a module. With the use of the battery, the difference between the individual batteries gradually increases, and the consistency between the individual batteries is poor. Due to the short plate effect of the battery, the capacity of the battery pack is limited, so that the capacity of the battery pack cannot be fully utilized, resulting in the failure of the battery pack. Overall capacity is reduced. On the other hand, after the differences among individual batteries gradually expand, some single batteries will be overcharged and some single ba...

AI Technical Summary

Problems solved by technology

However, in this way, battery information may be collected while equalization is being performed. Since the equalization process may cause fluctuations in battery information, this may lead to inaccurate battery information collected, which in turn makes it necessary to balance when there are single batteries. , the calculated equalization duration is inaccurate, and the equalization effect is poor

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