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Air inlet system suitable for low-temperature quick start of fuel cell

A technology of quick start and air intake system, applied in the field of air intake system, can solve the problems of fuel cell start-up difficulty, slowness, and difficult reaction, and achieve the effects of preventing blockage, increasing reaction concentration, and reducing flow path

Pending Publication Date: 2022-07-08
安徽明天氢能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned patents have the following disadvantages: under low temperature conditions, the reaction of hydrogen and oxygen is difficult and slow, which makes it difficult to start the fuel cell

Method used

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  • Air inlet system suitable for low-temperature quick start of fuel cell
  • Air inlet system suitable for low-temperature quick start of fuel cell
  • Air inlet system suitable for low-temperature quick start of fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An air intake system suitable for low temperature and fast start-up of fuel cells, such as figure 1 As shown, the air filter 100 and the air compressor 300 are connected in sequence, and the air outlet of the air compressor 300 is respectively connected with a back pressure valve 1 500 and a back pressure valve 2 900 through a three-way 400. The back pressure valve 1 The air outlet of 500 is sequentially connected to the intercooler 600, the humidifier 800, and the temperature and pressure sensor 700. The air outlet of the temperature and pressure sensor 700 is connected to the air inlet of the fuel cell stack. The air port is connected to the air inlet of the temperature and pressure sensor 700 .

[0035] To solve traffic monitoring problems; such as figure 1 As shown, a flow meter 200 is installed on the connecting pipeline between the air filter 100 and the air compressor 300 .

[0036] In this embodiment, under normal conditions, the air compressor 300 compresses ...

Embodiment 2

[0038] An air intake system suitable for low temperature and fast start-up of fuel cells, such as Figure 2-5 As shown in the figure, in order to solve the problem of air filtration; this embodiment makes the following improvements on the basis of Embodiment 1: the air filter 100 includes an outer casing 1, a grooved bottom cover 4 and a top cover respectively fixed on both sides of the outer casing 1 8 and the filter element 5 arranged inside the outer casing 1, the outer wall of the outer casing 1 is welded with an air inlet 2 communicating with its inner cavity. The outer wall of the top cover 8 is welded with an air outlet 9 arranged coaxially with it; After entering the surrounding inner wall of the outer casing 1 from the air inlet 2 , it is filtered by the filter element 5 and then flows out from the inside of the filter element 5 along the air outlet 9 .

[0039] In order to solve the problem of uniform use and prevent local clogging, such as figure 2 , 3As shown, t...

Embodiment 3

[0042] An air intake system suitable for low temperature and fast start-up of fuel cells, such as Figure 2-5 As shown in the figure, in order to solve the problem of blocking prevention; this embodiment makes the following improvements on the basis of Embodiments 1 and 2: the bottom of the groove bottom cover 4 is provided with a recoil type dust removal mechanism 3, and the recoil type dust removal mechanism 3 includes a cylinder 11 welded to the bottom of the groove bottom cover 4, a piston 19 slidably connected to the inner wall of the cylinder 11, and a telescopic piece 18 fixed to the outer wall of the bottom of the cylinder 11 by bolts. In this embodiment, the specific type of the telescopic element 18 is not limited, and it is preferably a cylinder. The telescopic element 18 can drive the piston 19 to move up and down, so as to apply a recoil force to the inner cavity of the filter element 5 and attach the filter to the filter element 5 through the recoil force. The pa...

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Abstract

The invention discloses an air inlet system suitable for low-temperature quick start of a fuel cell, and relates to the technical field of fuel cells. The problem that low-temperature starting is difficult is solved. The system specifically comprises an air filter and an air compressor which are sequentially connected, an air outlet of the air compressor is connected with a first back pressure valve and a second back pressure valve through a tee joint, an air outlet of the first back pressure valve is sequentially connected with an intercooler, a humidifier and a temperature and pressure sensor, and an air outlet of the temperature and pressure sensor is connected to an air inlet of a fuel cell stack. And an air outlet of the back pressure valve II is connected to an air inlet of the temperature and pressure sensor. When the air temperature is low and the fuel cell is difficult to start, the first back pressure valve is closed, the second back pressure valve is opened, and high-temperature and high-pressure gas from the air compressor is directly conveyed into the fuel cell stack for reaction at the moment, so that on one hand, the high-temperature gas acting by the air compressor directly enters the fuel cell stack without being cooled, the initial reaction temperature of oxygen and hydrogen can be increased; and reliable starting of the fuel cell is ensured.

Description

technical field [0001] The present invention relates to the technical field of fuel cells, in particular to an air intake system suitable for low temperature and quick start of fuel cells. Background technique [0002] With the development of new energy technology and the implementation of hydrogen fuel cell city demonstration clusters, the engine system based on proton exchange membrane fuel cell (PEMFC) technology has ushered in large-scale market applications. Hydrogen fuel cell vehicles have established their future market position with the advantages of short hydrogenation time, long battery life, and zero emissions. Reliable reaction with hydrogen. [0003] After searching, the Chinese Patent Publication No. CN212667139U discloses an integrated fuel cell engine system, including a frame, a hydrogen supply system, a fuel cell engine, an air intake system, a water circulation system, an air-hydrogen tailpipe system and an electrical system , The upper part of the frame...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04302H01M8/04225H01M8/04089H01M8/04082H01M8/0432H01M8/0438H01M8/0662B01D46/76B01D46/71B01D46/26B01D46/24
CPCH01M8/04302H01M8/04225H01M8/04089H01M8/04335H01M8/04395H01M8/04201H01M8/0687B01D46/26B01D46/2411Y02E60/50
Inventor 丁锋樊旭东刘士广王建军潘永志王朝云
Owner 安徽明天氢能科技股份有限公司
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