The invention relates to an
electrical design field and discloses a
power battery management system and a method thereof.
Estimation algorithm of
cell state of charge (SOC), a
heat management technology, a safety management and other new technologies are researched and implemented. The
system in the invention comprises a safety management subsystem, a
heat management subsystem, an optimization subsystem and the like. The safety management subsystem is used for monitoring charged states of
cell monomers; determining whether the
cell monomers are in
discharge end states according to charged states of cell monomers and terminating cell discharges if the cell monomers are in
discharge end states. The
heat management subsystem is used for detecting temperatures of cell
monomer surfaces; determining upper limits of temperature ranges in cell monomers according to temperature history information of cell
monomer surfaces; determining temperature distribution information of a cell box consisting of all cell monomers; controlling an
operating temperature of the battery according to temperature distribution information so that the
operating temperature is in a range of preset temperatures. The optimization subsystem is respectively connected with the safety management subsystem and the heat management subsystem, and is used for controlling working states of the safety management subsystem and the heat management subsystem. In the invention, the safety management, the heat management and the like are applied in a management field of a
power battery, which can improve safety performance, prolong service life, raise usage efficiency, give fully play to
cell potential and guarantee the safety of using.