A hybrid battery pack equalization method, equalization system, equalization device and vehicle thereof

Abstract

The application discloses a kind of mashup battery pack equalization method, equalization system, device and vehicle thereof, method steps include: based on the SOC-OCV curve of lithium iron phosphate battery system and ternary lithium ion battery system, determine the different working conditions of mashup battery pack, identify inconsistency, the initial equalization capacity of different battery system is calculated, according to the different working conditions of mashup battery pack, the equalization time iteration calculation under different confidence is carried out, according to the equalization time of mashup battery pack, the battery of battery pack is equalized operation, and the equalization capacity of mashup battery is updated in real time.The application solves the problem of the consistency of two kinds of batteries, so that the battery has higher available energy in the whole life cycle, by setting a variety of characteristic conditions, the identification probability and accuracy of the inconsistency of different system batteries of mashup battery pack are improved, and over-equalization or insufficient equalization caused by inaccurate single working condition battery inconsistency identification is prevented.

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