Pure electric driving range display method and system for pure electric and hybrid electric vehicles

Abstract

The invention relates to the technical field of automobile endurance calculation methods, in particular to a pure electric driving range display method and system for pure electric and hybrid electric vehicles. The method comprises the steps of reading and displaying the pure electric driving range initial value stored in the EEPROM, obtaining the average energy consumption value of the power battery, calculating the first pure electric driving range of the vehicle according to the residual electric quantity and the average energy consumption value of the power battery , and comparing the first pure electric driving range with the currently displayed pure electric driving range initial value; according to a comparison result, carrying out gradient change correction on the pure electric driving range initial value so as to obtain a second pure electric driving range for displaying, and storing the second pure electric driving range and the average energy consumption of the driving cycle in the EEPROM (Electrically Erasable Programmable Read-Only Memory). According to the display calculation method, the accurate pure electric driving range can be obtained, and the proper display value of the pure electric driving range can be obtained by correcting the calculated value.

Description

technical field [0001] The invention relates to the technical field of calculation methods for vehicle endurance, in particular to a method and system for displaying pure electric endurance range of pure electric and hybrid electric vehicles. Background technique [0002] Due to their advantages of environmental protection, energy saving, and low cost of use, pure electric and hybrid vehicles have quickly gained favor from the market and users, and their sales are also gradually increasing. The driving range of an electric vehicle is to judge the maximum distance that the vehicle can travel on pure electric power starting from the current remaining power. The driving conditions of pure electric and hybrid electric vehicles are complex, and there are various working conditions such as driving power consumption, static accessory power consumption, and charging. The driver brings bad driving experience such as lack of driving confidence and mileage anxiety. [0003] For examp...

AI Technical Summary

Problems solved by technology

However, the remaining mileage of the program at each moment is calculated based on the remaining power, voltage and current values ​​at that moment. Under the normal driving conditions of the vehicle, in the road environment or the driving situation of the driver, the voltage and current The value may change greatly, which will cause a sudden change in the calculated remaining driving distance

If the rate of change is too large, it will lead to inaccurate calculation of the remaining mileage

Although the scheme has implemented a filtering algorithm, it cannot fundamentally eliminate this mutation

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