Fuel cell gas supply device and control method thereof

A gas supply device, fuel cell technology, applied in the direction of fuel cells, fuel cell additives, electrical components, etc., to achieve good control effect, fast and precise regulation, and solve the effect of surge

Inactive Publication Date: 2020-04-03
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air supply device can simultaneously solve the air compressor surge problem and the water flooding problem caused by excessive h

Method used

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  • Fuel cell gas supply device and control method thereof
  • Fuel cell gas supply device and control method thereof
  • Fuel cell gas supply device and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] This embodiment provides a control method of a gas supply device for a fuel cell, the control method adopts figure 2 gas supply shown, and according to image 3 process shown.

[0062] The control unit 18 monitors that the pressure ratio of the air compressor 3 is 2.9, and the flow rate is 150g / s, and at the same time monitors that the humidity value of the electric stack 7 is 100%. The humidity value of stack 7 is higher than the limit humidity value of 95%" judgment result. The control unit 18 controls the air compressor 3 to increase the pressure and flow rate to 160g / s, simultaneously opens the second proportional valve 11 and adjusts the opening to 6%, opens the first proportional valve 10 and adjusts the opening to 80%, so that the part dry The air is passed into the electric stack 7 to reduce the humidity value of the electric stack 7 to 95%, and excess air is discharged from the fuel cell, thereby avoiding the surge problem of the air compressor 3 .

Embodiment 2

[0064] This embodiment provides a control method of a gas supply device for a fuel cell, the control method adopts figure 2 gas supply shown, and according to image 3 process shown.

[0065] The control unit 18 monitors that the pressure ratio of the air compressor 3 is 1.3, the flow rate is 50g / s, and the humidity of the electric stack 7 is 70%. The humidity value of the cell stack 7 is not higher than the limit humidity value of 95%". The control unit 18 controls the air compressor 3 to increase the pressure and flow rate to 70g / s, and at the same time opens the second proportional valve 11 and adjusts the opening to 30%, and closes the first proportional valve 10, thereby discharging excess air from the fuel cell and avoiding air pollution. Surge problem of compressor 3.

Embodiment 3

[0067] This embodiment provides a control method of a gas supply device for a fuel cell, the control method adopts figure 2 gas supply shown, and according to image 3 process shown.

[0068] The control unit 18 monitors that the pressure ratio of the air compressor 3 is 3.0, the flow rate is 200g / s, and the humidity of the stack 7 is 100%. After judgment, it is obtained that "the air compressor 3 is not in the surge zone, But the humidity value of the stack 7 is higher than the limit humidity value of 95%" judgment result. The control unit 18 opens the first proportional valve 10 and adjusts the opening to 100%, and closes the second proportional valve 11, so that part of the dry air is passed into the electric stack 7, and the humidity value of the electric stack 7 is reduced to 95%.

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PUM

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Abstract

The invention relates to a fuel cell gas supply device and a control method thereof. The gas supply device comprises an air compressor, a humidifying unit, a galvanic pile, a first pipeline, a secondpipeline and a third pipeline; the air compressor, the humidifying unit, and the galvanic pile are successively connected; a first bypass and a second bypass are respectively arranged between the first pipeline and the second pipeline and between the first pipeline and the third pipeline; a first flow regulator and a second flow regulator are respectively arranged on the first bypass and the second bypass; and the gas supply device also comprises a control unit, the control unit is used for monitoring the pressure flow of the air compressor and the humidity of the galvanic pile and controllingthe air compressor, the first flow regulator and the second flow regulator. According to the gas supply device, through the integrated pipeline design, the surge problem of the air compressor and thewater logging problem caused by overlarge humidity of the galvanic pile can be solved at the same time, the pipeline design is simple, and the system integration degree is high.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell gas supply device and a control method thereof. Background technique [0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy, also known as an electrochemical generator. It is the fourth power generation technology after hydropower, thermal power and atomic power. Fuel cells can directly convert chemical energy into electrical energy according to the isothermal electrochemical method without going through the heat engine process, and are not limited by the Carnot cycle, so the energy conversion efficiency is high, and it has the characteristics of no noise, no pollution, and safer. The most promising power generation technology. Among them, the hydrogen fuel cell is the most popular research object. Its working principle is: send hydrogen to the anode plate of the hydrogen fuel cell, and through the actio...

Claims

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Application Information

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IPC IPC(8): H01M8/04082H01M8/04089H01M8/04119H01M8/0432H01M8/0438H01M8/04746
CPCH01M8/04089H01M8/04126H01M8/04201H01M8/0432H01M8/04425H01M8/04746Y02E60/50
Inventor 马秋玉王宇鹏都京赵洪辉赵子亮黄兴丁天威曲禄成秦晓津芦岩
Owner CHINA FIRST AUTOMOBILE
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