Patent ID: 11904703
Assignee: BYD COMPANY LIMITED
Field: Transport (Mechanical engineering)
Classification: CPC B  G  Y | IPC B  G

Claim 0:
1. A method for calculating an endurance mileage of an electric vehicle, comprising:
calculating, by a processor, energy consumption per unit distance of a power battery of the electric vehicle by using a first formula:

DK=αDstd+βDactual+γDK-1,

 wherein Dstd is energy consumption per unit distance under a standard operating condition, Dactual is energy consumption per unit distance under an actual operating condition, DK-1 is energy consumption per unit distance at a previous moment, K is an integer, and α, β, and γ are coefficients;
selecting α, β, and V based on a current actual operating condition to improve accuracy of predicting an energy consumption per unit distance under a future operating condition of the electric vehicle;
obtaining, by the processor, an open circuit voltage battery capacity (OCV-Q) reference curve of the power battery;
measuring an open circuit voltage (OCV) of the power battery, and obtaining, by the processor, the OCV of the power battery;
obtaining, by the processor, current remaining available energy of the power battery according to the OCV and the OCV-Q reference curve of the power battery; and
calculating, by the processor, the endurance mileage of the electric vehicle according to the energy consumption per unit distance of the power battery and the current remaining available energy of the power battery.