Method and device for determining parameters of battery model and medium

The invention relates to the field of battery modeling, and discloses a parameter determination method and device of a battery model and a medium, and the parameter determination method of the battery model comprises the steps: obtaining an initial battery parameter of a target battery based on a first charging and discharging process of the target battery; determining an initial battery model of the target battery according to the initial battery parameters; obtaining new battery basic parameters of the target battery based on the second charging and discharging process of the target battery; the second charging and discharging process comprises a charging process and a continuous discharging process; and according to the new battery basic parameters, carrying out adaptive correction on the open-circuit voltage and the battery internal resistance corresponding to each absolute capacity state in the initial battery model. The open-circuit voltage and the battery internal resistance corresponding to each absol