Multi-threshold adaptive clustering group equalization control of energy storage battery pack

Aiming at the unavoidable consistency difference among cells in an energy storage battery pack, a multi-threshold adaptive clustering group equalization control method is proposed. First, a single-inductor energy storage equalization topology with simple structure, simple control and perfect balancing function is introduced. Second, while introducing the idea of cluster equalization, a group equalization control method is established based on adjacent cells with small consistency difference, so as to realize the transfer of equalization energy between battery groups containing different numbers of adjacent cells. Final, through simulation experiments, it is verified that the proposed cluster group equalization control can significantly improve the equalization speed while ensuring the equalization efficiency compared with the "one-to-one" equalization control based on the extreme difference or average.