Residual endurance mileage estimation method and system of electric vehicle and electric vehicle

The invention proposes a residual endurance mileage estimation method and a system of an electric vehicle and the electric vehicle, wherein the method comprises the steps of: obtaining the discharge current and the discharge voltage of a power battery, and calculating the present discharge energy of the power battery according to the discharge current and the discharge voltage; obtaining the charge state and the charge/discharge times of the power battery; inputting the charge state of the power battery, the charge/discharge times and the total discharge energy of the power battery in unit time into a neural network to obtain an endurance mileage compensation coefficient; calculating the vehicle driving distance in unit time when the vehicle is located in the driving state; and obtaining the vehicle residual endurance mileage according to the vehicle driving distance in unit time, the endurance mileage compensation coefficient, the charge state of the power battery and the difference value between the charge states of the power battery before and after the unit time. The method can accurately calculate the residual endurance mileage of the electric vehicle.