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

Abstract

The present disclosure relates to a battery equalization method, system, vehicle, storage medium and electronic equipment. The method includes: obtaining the voltage change rate of each single battery in the battery pack; obtaining the reference voltage change rate required for equalization; according to the The voltage change rate of the single battery to be balanced in the battery pack, the reference voltage change rate and the preset equalization duty cycle determine the target equalization duration of the single cell to be balanced, wherein the equalization duty cycle is the ratio of the equalization period in the unit period to the unit period, the unit period includes the equalization period and the sampling period; according to the target equalization duration, the unit to be balanced is controlled during the equalization period of the unit period Battery balancing.

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...

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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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