Battery pack equalization control method, system, medium and equipment

The invention provides a battery pack equalization control method and system, a medium and equipment. The method comprises the following steps: acquiring working parameters of each battery cell in a battery pack; judging whether the working parameters of each battery cell meet a first equalization condition or not; selecting a first equalization mode or a second equalization mode according to the working state of the battery pack; in the first equalization mode, acquiring a first battery cell of which the working parameter meets a second equalization condition in each battery cell, and disconnecting the connection between the first battery cell and the protection circuit until the working parameter of each battery cell does not meet the first equalization condition; in combination with the state of the battery pack, different methods are respectively adopted for balancing; and in the standing state, a passive equalization optimization method is adopted, so that the equalization current of the battery is chang