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Control method for increasing driving range of hydrogen fuel cell vehicle

A fuel cell and driving range technology, which is applied in the control field of improving the driving range of hydrogen fuel cell vehicles, can solve the problems of low efficiency of the whole vehicle and reduce the driving range of the whole vehicle, so as to prolong the service life and increase the driving range , Improve the effect of energy utilization efficiency

Pending Publication Date: 2021-04-02
WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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AI Technical Summary

Problems solved by technology

The current control method of following the vehicle power by fuel cell power cannot ensure that the fuel cell system works in a high-efficiency range, resulting in low vehicle efficiency, thereby reducing the driving range of the vehicle

Method used

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Examples

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Embodiment Construction

[0025] The following are specific examples of the present invention to further describe the technical solutions of the present invention, but the present invention is not limited to these examples.

[0026] A control method for improving the mileage of a hydrogen fuel cell vehicle according to the present invention, the energy system of the hydrogen fuel cell vehicle includes a fuel cell system and an auxiliary energy supercapacitor;

[0027] Divide the auxiliary energy supercapacitor SOC into a charge-only interval, a charge-discharge interval, and a discharge-only interval;

[0028] When the auxiliary energy supercapacitor SOC is in the charge-only interval, the fuel cell system selects the maximum power P max ;

[0029] When the auxiliary energy supercapacitor SOC is in the discharge-only interval, the fuel cell system shuts down and stops external power output;

[0030] When the auxiliary energy supercapacitor SOC is in the charge-discharge range, the required power of t...

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Abstract

The invention discloses a control method for increasing the driving range of a hydrogen fuel cell vehicle. According to the method, the auxiliary energy super capacitor SOC of the hydrogen fuel cell vehicle is divided into a charging-only interval, a charging-discharging interval and a discharging-only interval; when the auxiliary energy super capacitor SOC is in the charging and discharging interval, a vehicle control unit calculates the real-time power P required by the vehicle through an accelerator pedal, a brake pedal, a gear switch, the vehicle speed and the motor rotating speed; according to the real-time power P, output power is selected by a fuel cell system of the hydrogen fuel cell vehicle; for the power demand of rapid conversion in the whole vehicle driving process, the auxiliary energy super capacitor bears the energy of a rapid conversion part, and the fuel cell system bears the energy of a slow change part. The energy utilization efficiency is improved, the driving range of the hydrogen fuel cell vehicle is increased, the power adjustment frequency of the hydrogen fuel cell system is reduced, and the service life of the hydrogen fuel cell system is prolonged.

Description

technical field [0001] The invention relates to the technical field of hydrogen fuel cell vehicles, in particular to a control method for increasing the driving range of hydrogen fuel cell vehicles. Background technique [0002] With the gradual depletion of the earth's energy resources, how to improve the energy utilization rate of the existing energy has become an increasingly urgent demand. As a large energy consumer, the improvement of the energy utilization rate has a more significant effect. The current control method of following the vehicle power by fuel cell power cannot ensure that the fuel cell system works in a high-efficiency range, resulting in low efficiency of the vehicle, thereby reducing the mileage of the vehicle. Contents of the invention [0003] The object of the present invention is to propose a control method for improving energy utilization efficiency and increasing driving range of a hydrogen fuel cell vehicle in view of the above-mentioned shortc...

Claims

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Application Information

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IPC IPC(8): B60L58/30B60L50/40
CPCB60L58/30B60L50/40Y02T10/70Y02T90/40
Inventor 李昌泉郝义国
Owner WUHAN GROVE HYDROGEN AUTOMOBILE CO LTD
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