Method and system for evaluating travelable mileage of fuel cell hybrid electric vehicle

Abstract

The invention discloses a method for evaluating a travelable mileage of a fuel cell hybrid electric vehicle. The method comprises the steps of acquiring vehicle parameters in each communication period, wherein the vehicle parameters include a fuel cell stack voltage Vfc, a current Ifc, a storage battery voltage VBat, a current IBat, a super capacitor voltage VCap, a current ICap and a fuel cell system bench test efficiency eta fcs test; calculating equivalent fuel consumption Qt of circulation in each kilometer in real time; calculating a circulation mileage St in real time, and acquiring real-time equivalent fuel consumption Qs per kilometer; and calculating the real-time travelable mileage S' of the vehicle. And the travelable mileage can be evaluated in real time to obtain a relativelyaccurate travelable mileage.

Description

Technical field [0001] The invention belongs to the technical field of fuel cell vehicles, and in particular relates to a method and system for evaluating the range of fuel cell hybrid vehicles. Background technique [0002] Fuel cell vehicles, such as hydrogen fuel cell hybrid buses. For fuel cell hybrid buses, the driver needs to know the real-time range of the vehicle. However, the current practice is: the driver can only use the hydrogen on the dashboard The hydrogen pressure in the bottle and the state of charge SOC of the battery and supercapacitor are used to estimate the real-time vehicle range, but it is often the case that the vehicle is stuck on the road due to misjudgment. [0003] At present, there is no standard method for calculating the real-time driving mileage in China. One method is to use the ratio of the real-time remaining energy of the vehicle to the real-time average energy consumption per kilometer, but the calculated mileage varies widely, which is a refer...

AI Technical Summary

Problems solved by technology

[0002] Fuel cell vehicles, such as hydrogen fuel cell hybrid buses, for fuel cell hybrid buses, the driver needs to know the real-time mileage of the vehicle, but the current practice is: the driver can only use the hydrogen on the dashboard The hydrogen pressure in the bottle and the SOC of the battery and supercapacitor state of charge are used to estimate the real-time mileage of the vehicle, but often there are situations where the car breaks down on the road due to misjudgment

[0003] At present, there is no standard method for calculating the real-time driving mileage in China. One method is to use the ratio of the real-time remaining total energy of the vehicle to the real-time average energy consumption per kilometer. Little value and maybe even misleading

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