CN211320225U

CN211320225U - Proton exchange membrane fuel cell engine and air path thereof

Info

Publication number: CN211320225U
Application number: CN201922447230.3U
Authority: CN
Inventors: 曹宗双; 马学龙
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-08-21
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses an air path of a proton exchange membrane fuel cell engine, which comprises an air compressor, an intercooler and a chemical air filter; the intercooler is communicated with the air outlet of the air compressor; the inlet of the chemical air filter is communicated with the outlet of the intercooler, and the outlet of the chemical air filter is communicated with the inlet of the electric pile through the humidifier. When the air purifier is applied, the temperature of the compressed air is higher after the compressed air is compressed by the air compressor, the temperature can be reduced to be within the range of 50-60 ℃ after the compressed air is cooled by the intercooler, and the activity of a catalyst in the chemical air filter can be enhanced when the air in the state passes through the chemical air filter, SO that the chemical air filter can effectively adsorb SO in the air₂、H₂S、NO_x、NH₃And the impurity gas improves the adsorption effect of the chemical air filter, thereby avoiding the performance reduction of the fuel cell caused by the unsatisfactory air quality entering the fuel cell stack. The utility model provides a proton exchange membrane fuel cell engine uses above-mentioned air circuit, improves the life-span of galvanic pile.

Description

Proton exchange membrane fuel cell engine and air path thereof

Technical Field

The utility model relates to a mechanical industry technical field, more specifically say, relate to an air way of proton exchange membrane fuel cell engine, still relate to a proton exchange membrane fuel cell engine.

Background

When the proton exchange membrane fuel cell engine is used, air and hydrogen react in a galvanic pile, but SO in the air₂May cause poisoning of the cathode catalyst of the fuel cell stack to cause degradation of the cell performance, and SO₂The higher the concentration, the more significant the fuel cell performance is reduced and the higher the SO is₂The deteriorated battery performance due to poisoning cannot be recovered, H₂S、NO_x、NH₃The impurity gases can also cause the performance of the proton exchange membrane fuel cell to be reduced.

Currently, a chemical air filter is arranged in an air path of a proton exchange membrane fuel cell engine for filtering SO₂、H₂S、NO_x、NH₃And the like. However, the chemical air filter is installed at the front end of the air compressor, so that the adsorption effect on each impurity gas in the air is poor, and the quality of the air entering the battery pair is not high.

In view of the above, the problem to be solved is urgently needed by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an air circuit of proton exchange membrane fuel cell engine, its chemical air cleaner sets up in the exit end of intercooler, guarantees that the air temperature who gets into chemical air cleaner is in 50 ℃ -60 ℃ within range, strengthens the activity of catalyst in the chemical air cleaner, makes chemical air cleaner effectively adsorb the SO in the air₂、H₂S、NO_x、NH₃And the impurity gas improves the adsorption effect of the chemical air filter, thereby avoiding the performance reduction of the fuel cell caused by the unsatisfactory air quality entering the fuel cell stack. The utility model also provides a proton exchange membrane fuel cell engine uses above-mentioned air circuit, improves the life-span of galvanic pile.

In order to achieve the above object, the utility model provides a following technical scheme:

an air circuit of a proton exchange membrane fuel cell engine, comprising:

an air compressor;

the intercooler is communicated with an air outlet of the air compressor;

and the inlet of the chemical air filter is communicated with the outlet of the intercooler, and the outlet of the chemical air filter is communicated with the inlet of the electric pile through a humidifier.

Preferably, in the air path, an air filter screen is installed at an end of an air inlet pipe of the air compressor.

Preferably, in the air path, the chemical air filter is integrated with the humidifier.

Preferably, in the air path, a filter element of the chemical air filter is installed on an air inlet side of the humidifier, and the filter element and the humidifier are assembled in the same housing.

Preferably, in the air path, an outlet of the electric pile is communicated with a discharge pipe through the humidifier.

Preferably, in the air path, a first branch line is arranged on a line between the chemical air filter and the inlet of the humidifier, and the end of the first branch line is communicated with the galvanic pile and used for conveying the purge gas of the galvanic pile box body.

Preferably, in the air path, a temperature, pressure and humidity integrated sensor is arranged on a pipeline between the humidifier and the electric pile.

Preferably, the air path further comprises a second branch pipeline for communicating the tank body of the galvanic pile with the discharge pipe, and the second branch pipeline is provided with a galvanic pile hydrogen concentration sensor.

Preferably, in the air path, the exhaust pipe is provided with an exhaust hydrogen concentration sensor, and the exhaust hydrogen concentration sensor is located between the air outlet of the exhaust pipe and the second branch line.

A proton exchange membrane fuel cell engine comprises an air path, wherein the air path is any one of the air paths in the technical scheme.

The utility model provides an air path of a proton exchange membrane fuel cell engine, which comprises an air compressor, an intercooler and a chemical air filter; the intercooler is communicated with the air outlet of the air compressor; the inlet of the chemical air filter is communicated with the outlet of the intercooler, and the outlet of the chemical air filter is communicated with the inlet of the electric pile through the humidifier.

The utility model provides an air route is when using, and the air passes through air compressor machine compression after the temperature is higher, after the intercooler cooling, and the temperature can fall to 50 ℃ -60 ℃ in the within range, and the air under this kind of state can strengthen the activity of catalyst among the chemical air cleaner through chemical air cleaner, makes the SO in the effective adsorbed air of chemical air cleaner₂、H₂S、NO_x、NH₃And the impurity gas improves the adsorption effect of the chemical air filter, thereby avoiding the performance reduction of the fuel cell caused by the unsatisfactory air quality entering the fuel cell stack.

The utility model provides a proton exchange membrane fuel cell engine uses above-mentioned air circuit, effectively improves the life-span of galvanic pile.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an air path of a proton exchange membrane fuel cell engine according to an embodiment of the present invention;

wherein, in fig. 1:

an air screen 101; a mass flow meter 102; a motor controller 103; an air compressor 104; an intercooler 105; a chemical air filter 106; a humidifier 107; a temperature, pressure, and humidity integrated sensor 108; a stack 109; a stack hydrogen concentration sensor 110; an exhaust hydrogen concentration sensor 111; a first branch line 11; a second branch line 12.

Detailed Description

The embodiment of the utility model discloses proton exchange membrane fuel cell engine's air circuit, its chemistry air cleaner sets up in the exit end of intercooler, guarantees that the air temperature who gets into chemistry air cleaner at 50 ℃ -60 ℃ within range, and the activity of catalyst among the reinforcing chemistry air cleaner makes the effective SO in the absorption air of chemistry air cleaner₂、H₂S、NO_x、NH₃And the impurity gas improves the adsorption effect of the chemical air filter, thereby avoiding the performance reduction of the fuel cell caused by the unsatisfactory air quality entering the fuel cell stack. The embodiment of the utility model also discloses a proton exchange membrane fuel cell engine uses above-mentioned air circuit, improves the life-span of galvanic pile.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides an air path of a proton exchange membrane fuel cell engine, including an air compressor 104, an intercooler 105, and a chemical air filter 106; the intercooler 105 is communicated with the air outlet of the air compressor 104; an inlet of the chemical air filter 106 communicates with an outlet of the intercooler 105, and an outlet of the chemical air filter 106 communicates with an inlet of the stack 109 through a humidifier 107.

When the air path is used, the temperature of the air is high after the air is compressed by the air compressor 104, the air is cooled by the intercooler 105, the temperature can be reduced to 50-60 ℃, the activity of a catalyst in the chemical air filter 106 can be enhanced when the air in the state passes through the chemical air filter 106, and the chemical air filter 106 is promoted to effectively adsorb SO in the air₂、H₂S、NO_x、NH₃To increase chemical air content by adding impurity gasThe adsorption effect of the gas filter 106, thereby avoiding the degradation of the fuel cell performance caused by the unsatisfactory quality of the air entering the fuel cell stack.

Specifically, in the air path provided in the above embodiment, the air filter 101 is installed at the end of the air inlet pipe of the air compressor 104. The air filter 101 filters particles in the air, so as to prevent the particles from wearing parts of the air compressor 104, and prevent the bipolar plate flow channel in the galvanic pile 109 from being polluted, and prevent the pores of the gas diffusion layer and the catalyst from being blocked. The air intake of the air motor 104 is provided with a mass flow meter 102.

The air compressor 104 is an electric air compressor and is controlled by the motor controller 103, and the air compressor 104 and the motor controller 103 form an air assembly.

Preferably, the above embodiment provides an air circuit in which the chemical air filter 106 is integrated with the humidifier 107. The cartridge of the chemical air filter 106 is installed at the air inlet side of the humidifier 107, and the cartridge and the humidifier 107 are assembled in the same housing.

In this embodiment, the chemical air filter 106 and the humidifier 107 are integrated, so that the installation space and the installation pipeline of the air path can be saved, and the cost can be saved.

The outlet of the stack 109 communicates with a discharge pipe through a humidifier 107. A first branch pipeline 11 is arranged on a pipeline between the chemical air filter 106 and the inlet of the humidifier 107, the end of the first branch pipeline 11 is communicated with the electric pile 109, and the first branch pipeline 11 is used for conveying electric pile box body purging gas.

A temperature, pressure and humidity integrated sensor 108 is arranged on a pipeline between the humidifier 107 and the electric pile 109. The air circuit further comprises a second branch pipeline 12 which is communicated with the box body of the galvanic pile 109 and the discharge pipe, and a galvanic pile hydrogen concentration sensor 110 is arranged on the second branch pipeline 12. An exhaust hydrogen concentration sensor 111 is provided on the exhaust pipe, and the exhaust hydrogen concentration sensor 111 is located between the air exhaust port of the exhaust pipe and the second branch pipe.

The utility model also provides a proton exchange membrane fuel cell engine, including the air way, the air way is the air way that above-mentioned embodiment provided.

The proton exchange membrane fuel cell engine provided by the embodiment can improve the service life of the electric pile by applying the air channel provided by the embodiment. Of course, the pem fuel cell engine provided in this embodiment also has other effects related to the air path provided in the above embodiments, and will not be described herein again.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air circuit of a proton exchange membrane fuel cell engine, comprising:

an air compressor;

the intercooler is communicated with an air outlet of the air compressor;

2. The air circuit as claimed in claim 1, wherein an air screen is installed at an end of the air inlet pipe of the air compressor.

3. The air circuit of claim 1, wherein the chemical air filter is integrated with the humidifier.

4. The air circuit of claim 3, wherein the filter element of the chemical air filter is installed at an air inlet side of the humidifier, and the filter element and the humidifier are assembled in the same housing.

5. The air circuit of claim 1, wherein the outlet of the stack communicates with a drain through the humidifier.

6. The air circuit according to claim 5, wherein a first branch line is provided on a line between the chemical air filter and the inlet of the humidifier, and a terminal of the first branch line is communicated with the stack and is used for conveying stack tank purge gas.

7. The air circuit according to claim 5, wherein a temperature, pressure and humidity integrated sensor is arranged on a pipeline between the humidifier and the electric pile.

8. The air circuit according to claim 5, further comprising a second branch pipeline communicating the tank of the stack and the discharge pipe, wherein the second branch pipeline is provided with a stack hydrogen concentration sensor.

9. The air circuit according to claim 8, wherein an exhaust hydrogen concentration sensor is provided on the exhaust pipe between the air outlet of the exhaust pipe and the second branch pipe.

10. A proton exchange membrane fuel cell engine comprising an air circuit, wherein the air circuit is according to any one of claims 1 to 9.