Discharge state optimization method of retired battery and related device

The invention discloses a discharge state optimization method of a decommissioned battery and a related device, and relates to the technical field of battery discharge, and the method comprises the steps: predicting the charge state of the decommissioned battery based on a mutual information value generated by a state parameter and a health state of the decommissioned battery, and carrying out the echelon classification of the decommissioned battery; constructing a corresponding initial discharge strategy, and performing strategy optimization by using the game tree to obtain an optimized discharge strategy; the battery discharge equipment performs discharge processing based on the optimized discharge strategy; in the discharging treatment process, whether the collected temperature change value is larger than or equal to a preset change threshold value or not is judged, and if yes, the first pressure relief amount is determined; and correcting the first pressure relief amount based on the pressure-temperature