Power battery equalization management system of electric automobile
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The utility model relates to a power battery equalization management system of an electric automobile. The power battery equalization management system of the electric automobile is characterized in that the monomer batteries of a battery pack are divided into M same battery modules according to a series connected sequence, and the battery modules are connected with the resistance equalization circuits and the capacitance equalization circuits respectively and are connected with a coaxial multi-winding DC-DC converter; a microcontroller is connected with a battery management system to obtain the state data of a power battery pack, and the signals of the microcontroller are connected with the capacitance equalization circuits, the resistance equalization circuits, a pulse driving unit and the converter. The microcontroller firstly obtains a rated parameter of the battery pack to determine a control parameter, and selects different judgement standards for equalization operation according to the different states of charging, standing and discharging of the battery pack. The coaxial multi-winding DC-DC converter is utilized to equalize the modules, and the capacitance equalization circuits and the resistance equalization circuits are utilized to equalize the monomers. The power battery equalization management system of the electric automobile of the utility model enables the advantages of various equalization circuits to be complementary, and enables the equalization speed and efficiency to be improved.