Proton exchange membrane fuel cell hydrogen discharge system capable of being quickly started at low temperature

A proton exchange membrane and fuel cell technology, applied in the direction of fuel cell additives, fuel cell parts, etc., can solve the problems of complex structure design, high energy, etc., and achieve the effect of improving opening speed, simple operation and improving efficiency

Active Publication Date: 2016-12-14
SHANGHAI CHONGSU ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires higher energy consumption and more complicated structural design

Method used

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  • Proton exchange membrane fuel cell hydrogen discharge system capable of being quickly started at low temperature
  • Proton exchange membrane fuel cell hydrogen discharge system capable of being quickly started at low temperature
  • Proton exchange membrane fuel cell hydrogen discharge system capable of being quickly started at low temperature

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Embodiment 1

[0024] like figure 1 As shown, a proton exchange membrane fuel cell hydrogen exhaust system that can be quickly opened at low temperature includes: a hydrogen exhaust pipe 2, a hydrogen exhaust solenoid valve 3, a cooling liquid branch 5 and a liquid injection valve 6, and the hydrogen exhaust pipe 2 includes an inlet pipeline 21 and an outlet pipeline 22, both of which are connected through the hydrogen exhaust valve 3, and the inlet of the inlet pipeline 21 is connected to the fuel cell stack 1; the inlet of the hydrogen exhaust pipeline 2 The pipeline 21 is connected to the cooling liquid branch 5 through the liquid injection solenoid valve 6 , and the other end of the cooling liquid branch 5 is connected to the cooling liquid circuit 4 or the water tank. The position of the hydrogen exhaust valve 3 is lower than the inlet pipeline 21 and the outlet pipeline 22 .

[0025] The working principle of the present invention is like this:

[0026] In the hydrogen exhaust system,...

Embodiment 2

[0029] like image 3 As shown, the others are the same as in Embodiment 1, and a liquid level sensor 7 is also arranged in the inlet pipeline 21 .

[0030] In this embodiment, the cooling liquid filling process is controlled by the liquid level sensor 7 . The advantage of using a liquid level sensor for perfusion control is that the amount of coolant entering the hydrogen exhaust pipeline can be accurately controlled, avoiding poor antifreeze effects caused by fluctuations in the amount of perfusion liquid or pollution of the stack in extreme cases.

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PUM

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Abstract

The invention provides a proton exchange membrane fuel cell hydrogen discharge system capable of being quickly started at a low temperature. The proton exchange membrane fuel cell hydrogen discharge system comprises a hydrogen discharge pipe, a hydrogen discharge valve, a cooling liquid branch and a liquid injection valve, wherein the hydrogen discharge pipe comprises an inlet pipeline and an outlet pipeline which are connected through the hydrogen discharge valve; an air inlet of the inlet pipeline is connected with a fuel cell stack; the inlet pipeline of the hydrogen discharge pipe is connected with the cooling liquid branch through the liquid injection valve; and a cooling liquid can be injected into one end of the cooling liquid branch. Covering protection is carried out on the hydrogen discharge pipe and the hydrogen discharge valve by use of the characteristic of a low solidification point of the cooling liquid of a fuel cell system; pipe blockage and valve body freezing caused by low temperature solidification of a gas and liquid water are avoided; the starting speed of the hydrogen discharge system is significantly improved; meanwhile, the cold starting time of the fuel cell system at the low temperature is shortened; the efficiency of the fuel cell system is improved; and the overall design is simple and easy to implement.

Description

technical field [0001] The invention relates to a hydrogen exhaust system applied to a proton exchange membrane fuel cell, in particular to a hydrogen exhaust system for a proton exchange membrane fuel cell that can be quickly opened at low temperature. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) has the advantages of environmental friendliness, high energy conversion efficiency, and rapid start-up, and is considered to be a clean and efficient new energy generation device with great potential. Usually, a fuel cell system mainly consists of a hydrogen system, an air system and a water heat management system. Among them, the hydrogen gas system mainly includes high-pressure hydrogen tanks, hydrogen pressure reducers, hydrogen injectors, hydrogen exhaust solenoid valves and corresponding pipelines; the air system mainly includes air compressors, intercoolers, humidifiers and tail throttles and corresponding pipelines; the water heat management sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/02
CPCH01M8/02H01M8/04Y02E60/50
Inventor 施昕林琦胡哲
Owner SHANGHAI CHONGSU ENERGY TECH CO LTD
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