METHOD AND SYSTEM FOR ESTIMATING REMAINING RANGE OF ELECTRIC CAR, AND ELECTRIC CAR

摘要

A method and system for estimating a remaining range of an electric car, and electric car. The method comprises: acquiring a discharge current and a discharge voltage of a power battery, and computing a current released energy amount of the power battery according to the discharge current and the discharge voltage; acquiring a state of charge and the number of charge-discharge cycles of the power battery; inputting the state of charge, the number of charge-discharge cycles, and a total released energy per unit of time of the power battery into a neural network to acquire a range compensation coefficient; computing a travel distance per unit of time of a vehicle when the vehicle is in a moving state; and computing, according to the travel distance per unit of time, the range compensation coefficient, the state of charge of the power battery, and a difference value of the state of charge of the power battery in one time unit, a remaining range of the vehicle. The method can accurately compute a remaining range of an electric car.