The invention discloses a charging and discharging control method and device for a
battery pack, and belongs to the technical field of batteries, and the method comprises the steps: obtaining the quality parameter of to-be-charged
electric energy, setting a preliminary charging method, calculating the charging quality, and carrying out the grading of the charging quality through a set quality threshold value, the to-be-charged
battery pack is classified according to the grade of the charging quality, so that classified storage of charging
electric energy and reasonable configuration of the to-be-charged
battery pack are realized, and a preliminary charging strategy is generated; constructing an identification model, setting a fluctuation identification method, identifying fluctuation of charging
electric energy under different time scales, setting a fluctuation adjustment method, and dynamically adjusting the preliminary charging strategy according to the fluctuation type; the method comprises the following steps: acquiring a
discharge demand in real time, setting a
discharge optimization method, and once the
discharge demand is detected, making a discharge plan, setting a battery discharge priority and dynamically adjusting the discharge plan so as to realize efficient utilization of energy and guarantee stability and high efficiency of a battery discharge process.