Control method of hybrid vehicle

A control method of a hybrid vehicle, the control method comprising:

• a target level determining operation of determining, by a controller, whether a target maintaining SOC has been set to a maximum level in a battery maintaining driving mode;
• a middle/high speed determining operation of determining, by the controller, whether a vehicle speed is equal to or higher than a predetermined vehicle speed, when the target maintaining SOC determined in the target level determining operation is in a range about a maximum level;
• an energy estimating operation of calculating, by the controller, an estimated recovery energy which can be recovered by regenerative braking of the vehicle when a current vehicle speed is equal to or higher than the predetermined vehicle speed according to the result of the middle/high speed determining operation;
• and
• a first state of charge (SOC) correcting operation of updating, by the controller, the target maintaining SOC by subtracting a subtraction SOC equivalent to the estimated recovery energy calculated in the energy estimating operation from the target maintaining SOC, wherein the controller manages charging and discharging of the battery according to the updated target maintaining SOC.