Electromobile remainder range estimation method

Abstract

The invention discloses an electromobile remainder range estimation method. The method comprises the following steps: S1, dividing the charge state of a power battery into more than two continuous charge state sections; S2, setting up a range storage list, wherein the range storage list is provided with storage units corresponding to the charge state sections one by one, and each storage unit stores the endurance millage of an electromobile in the corresponding charge state section; S3, detecting the current charge state of the power battery, and judging the charge state section of the current charge state; S4, inquiring the range storage list, and acquiring the corresponding endurance millage of the charge state section of the current charge state and the charge state sections of the state lower than the current charge state; S5, accumulating the endurance millage, and sending the accumulated value through a CAN bus to an instrument for display. The method effectively reduces the estimation error of the remainder range of the electromobile, and improves the calculation accuracy of the remainder range.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a method for estimating the remaining mileage of the electric vehicle. Background technique [0002] According to the national EV863-standard regulations, the mileage of an electric vehicle refers to the mileage traveled by an electric vehicle from when the power battery is fully charged to the end of the test specified in the standard. The remaining mileage naturally refers to the mileage that the car can still drive under the current situation while maintaining the current driving method. Since electric vehicles cannot achieve fast charging, the accuracy of the calculation of the remaining driving range of electric vehicles is very important. [0003] The U.S. patent with the publication number US 20110166810A1 describes that the remaining mileage of an electric vehicle is calculated and corrected in real time according to the average energy consumption during driving. In thi...

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the real-time calculation of the vehicle driving force has a large transient change, and it cannot predict the trend of the entire cycle well. The short-term rapid acceleration or deceleration of the driver will cause the remaining mileage to increase or decrease.

Moreover, the filtering algorithm described in this patent has certain uncertain factors and lags, which will bring large errors to the calculation results of the remaining mileage

Images