Hydrogen fuel cell automobile tail gas water-gas separation and emission system and control method thereof

Abstract

The invention discloses a hydrogen fuel cell automobile tail gas water-gas separation and emission system and a control method thereof. The system comprises a hydrogen-water-vapor mixing pipeline andan air-water-vapor mixing pipeline which are led out of a tail gas exhaust outlet of an electric pile, and a mixed exhaust device for collectively exhausting water and gas in the hydrogen-water-vapormixing pipeline and the air-water-vapor mixing pipeline; and the hydrogen-water-vapor mixing pipeline is provided with a first gas-liquid separator and then is connected with the mixed discharging device and the fuel cell hydrogen supply system, and the air-water-vapor mixing pipeline is provided with a second gas-liquid separator and then is connected with the mixed discharging device. Gas-liquidseparation treatment of tail gas of the hydrogen supply system and the oxygen supply system is achieved, the mixed discharging device is additionally arranged in the tail gas treatment system, the water discharging box and the gas discharging box are integrated, dry gas and water are stored and treated in the mixed discharging device in a separated mode, and therefore the arrangement structure ismore compact. Meanwhile, after gas-liquid separation, part of hydrogen can return to a fuel cell hydrogen supply system to be recycled.

Description

technical field [0001] The invention relates to a hydrogen fuel cell, in particular to a hydrogen fuel cell vehicle tail gas water-gas separation and discharge system and a control method thereof. Background technique [0002] In order to cope with international environmental problems and energy crisis, hydrogen fuel cell vehicles have become the development strategy of countries all over the world. With the popularization of hydrogen fuel cell vehicles, more and more problems have emerged. Among them, the water in the tail gas of hydrogen fuel cell vehicles is discharged randomly, and the road surface is slippery or icy while walking, causing risks such as wheel skidding, which causes environmental and traffic issues. The exhaust drainage solenoid valve of fuel cell vehicles will freeze and fail to work in cold temperatures, resulting in drainage system failures affecting the entire exhaust emission function. At the same time, excessive hydrogen concentration in the exhaus...

AI Technical Summary

Problems solved by technology

With the popularization of hydrogen fuel cell vehicles, more and more problems have emerged. Among them, the water in the tail gas of hydrogen fuel cell vehicles is discharged randomly, and the road surface is slippery or icy while walking, causing risks such as wheel skidding, which causes Environmental and Traffic Issues

The solenoid valve for fuel cell vehicle exhaust drainage will freeze and fail to work in cold temperatures, resulting in drainage system failures affecting the entire exhaust emission function. At the same time, the concentration of hydrogen in the exhaust gas exceeds the standard and there will be safety hazards.

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