Control method and device of power supply circuit, vehicle and storage medium

The invention relates to a control method and device of a power supply circuit, a vehicle and a storage medium, the power supply circuit comprises a first battery pack and a second battery pack, and the method comprises the steps that a voltage difference value between the first battery pack and the second battery pack is acquired; determining a target control strategy corresponding to the voltage difference value; and controlling a direct-current converter of the power supply circuit to output corresponding power according to the target control strategy, wherein the direct-current converter comprises a first direct-current converter and a second direct-current converter. According to the invention, the corresponding target control strategy is obtained based on the voltage difference value between the first battery pack and the second battery pack, and the power output by the DC converter of the power supply circuit is controlled based on the target control strategy, so that the energy balance of different ba