Air loop of fuel cell system

Abstract

The utility model relates to the technical field of fuel cells, in particular to an air loop of a fuel cell system. Comprising an electric pile module, an air inlet of the electric pile module is connected with an air source through an air inlet pipeline, a chloride ion filter is arranged on the air inlet pipeline, the chloride ion filter comprises a shell, supports and filter screens, the supports are arranged in the shell, the filter screens are embedded in the supports, and a plurality of silver molecular sieves are arranged on the surfaces of the filter screens. Compared with the prior art, chloride ions in air entering the fuel cell system can be filtered out, and the reliability of the fuel cell system is ensured.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, specifically to an air circuit for a fuel cell system. Background Technology

[0002] Mining cars using diesel engines in underground mines are still in the National III and National IV emission standards. The exhaust fumes emitted by these engines cause serious pollution to the underground air. Even if underground workers wear masks, their masks will still be covered with diesel exhaust fumes in a short period of time, seriously affecting the health of the workers.

[0003] Considering diesel exhaust fumes, some mines are equipped with exhaust gas purification devices, but often, forced mechanical ventilation is required as a supplement. Due to the depth of the mines, forced ventilation cannot effectively treat all the exhaust fumes, so even with increased costs for forced ventilation facilities, the problem cannot be completely solved.

[0004] Due to its advantages in emissions and clean energy utilization, existing hydrogen fuel cell systems are being used in more and more market scenarios. Some underground mining trucks are considering converting from diesel engines to hydrogen fuel cell systems, which can improve the working environment for underground operators and reduce operating costs.

[0005] In mines near the sea, the presence of seawater results in a high concentration of chloride ions in the underground air. Existing fuel cell systems primarily consist of proton exchange membranes, bipolar plates, and catalysts. These key components are highly sensitive to chloride ions. Chloride ions can occupy positions within the catalyst molecules, reducing the reaction's power generation performance. Furthermore, chloride ions can cause corrosion of the metal bipolar plates and alter or permeate the proton exchange membrane channels, directly damaging the fuel cell system. Summary of the Invention

[0006] This invention provides an air circuit for a fuel cell system to overcome the shortcomings of existing technologies.

[0007] To achieve the above objectives, an air circuit for a fuel cell system is designed, including a fuel cell stack module. The air inlet of the fuel cell stack module is connected to an air source through an air intake pipe. A chloride ion filter is provided on the air intake pipe. The chloride ion filter includes a shell, a support, and a filter screen. Several supports are provided inside the shell, and the filter screen is embedded in the supports. Several silver molecular sieves are provided on the surface of the filter screen.

[0008] The filter screen surface is also provided with several activated carbon particles.

[0009] There is a gap between the outermost support and the outer shell.

[0010] A connecting block is provided at the lower end of the outermost bracket.

[0011] The outer casing has an air inlet and an air outlet at both ends that cooperate with the air inlet pipe.

[0012] The bracket has an air collection port connected to the air intake pipe on the side near the air inlet of the outer shell. The rest of the side is a closed structure. The side of the bracket near the air outlet of the outer shell is a closed structure. The rest of the bracket has several mounting holes for installing filters.

[0013] The outer shell is a rectangular frame structure.

[0014] The air intake pipe is also equipped with a flow meter, an intercooler, and an air compressor.

[0015] An air filter is provided between the air intake pipe and the air source.

[0016] A silencer is installed on the air outlet pipe of the fuel cell stack module.

[0017] Compared with the prior art, this invention enables the air entering the fuel cell system to be filtered to remove chloride ions, thus ensuring the reliability of the fuel cell system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model.

[0020] Figure 3 This is a structural schematic diagram from another perspective of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the chloride ion filter of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the chloride ion filter support of this utility model.

[0023] Figure 6 This is a side sectional view of the chloride ion filter of this utility model.

[0024] Figure 7 This is a frontal view of the air entering the chloride ion filter of this utility model.

[0025] Figure 8 This is a side view of the air entering the chloride ion filter of this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figures 1 to 8As shown, the air inlet of the fuel cell module 1 is connected to an air source through an air intake pipe 2. A chloride ion filter 3 is provided on the air intake pipe 2. The chloride ion filter 3 includes a housing 3-1, a support 3-2, and a filter screen 3-3. Several supports 3-2 are provided inside the housing 3-1. The filter screen 3-3 is embedded in the support 3-2. Several silver molecular sieves are provided on the surface of the filter screen 3-3.

[0028] The surface of filter screen 3-3 is also provided with several activated carbon particles.

[0029] There is a gap between the outermost bracket 3-2 and the outer shell 3-1 to ensure that air can circulate inside the outer shell 3-1.

[0030] The outermost bracket 3-2 has a connecting block 3-4 at its lower end, which fixes the bracket 3-2 inside the outer shell 3-1.

[0031] The outer casing 3-1 has an air inlet 3-1-1 and an air outlet 3-1-2 at both ends that cooperate with the air inlet pipe 2.

[0032] The bracket 3-2 has an air collection port 3-2-1 connected to the air intake pipe 2 on the side near the air inlet 3-1-1 of the outer casing. The rest of this side is enclosed. The side of the bracket 3-2 near the air outlet 3-1-2 of the outer casing is also enclosed, blocking the passage of gas and allowing the gas to flow through the filter screen 3-3 for filtration. The other sides of the bracket 3-2 have several mounting holes 3-2-2 for installing the filter screen.

[0033] like Figures 7 to 8 As shown, air enters the outer casing 1 through the air inlet 3-1-1 and the air collection port 3-2-1. Since the casing is a closed structure, the air flows upward and downward respectively, is filtered by the molecular sieve and activated carbon on the filter screen, and then flows to the air outlet 3-1-2.

[0034] The outer casing 3-1 has a rectangular frame structure, which is compatible with the fuel cell system and facilitates assembly.

[0035] The intake duct 2 is also equipped with a flow meter 8, an intercooler 4, and an air compressor 5. An air filter 6 is installed between the intake duct 2 and the air source. A silencer 7 is installed on the air outlet duct of the fuel cell module.

[0036] In use, air passing through air filter 6 sequentially enters chloride ion filter 3, flow meter 8, air compressor 5, and intercooler 4 before entering fuel cell stack module 1. It then flows out from the air outlet of fuel cell stack module 1 and into silencer 7. The air passing through chloride ion filter 3 removes chloride ions, ensuring the normal operation of the fuel cell system.

[0037] In this invention, the filter screen 3-3 is equipped with a silver molecular sieve and activated carbon. In practical use, the silver molecular sieve is a purchased component. The silver molecular sieve is a material with a uniform microporous structure. The silver ions it contains have a certain adsorption effect on salts. Its microporous structure can selectively adsorb small molecules and ions. When air containing sodium chloride from the seaside passes through the molecular sieve, sodium chloride molecules or ions can enter the micropores of the molecular sieve and be adsorbed, generating silver chloride. The activated carbon can first adsorb organic pollutants and some moisture in the air, providing a better environment for the molecular sieve to remove chloride ions.

Claims

1. An air circuit for a fuel cell system, comprising a stack module, characterized in that: The air inlet of the fuel cell stack module (1) is connected to an air source through an air intake pipe (2). A chloride ion filter (3) is provided on the air intake pipe (2). The chloride ion filter (3) includes a shell (3-1), a support (3-2), and a filter screen (3-3). Several supports (3-2) are provided inside the shell (3-1). The filter screen (3-3) is embedded in the support (3-2). Several silver molecular sieves are provided on the surface of the filter screen (3-3).

2. The air circuit of a fuel cell system according to claim 1, characterized in that: The surface of the filter screen (3-3) is also provided with a number of activated carbon particles.

3. The air circuit of a fuel cell system according to claim 1, characterized in that: There is a gap between the outermost support (3-2) and the outer shell (3-1).

4. The air circuit of a fuel cell system according to claim 1 or 3, characterized in that: The outermost bracket (3-2) has a connecting block (3-4) at its lower end.

5. The air circuit of a fuel cell system according to claim 1, characterized in that: The outer shell (3-1) is provided with an air inlet (3-1-1) and an air outlet (3-1-2) at both ends to cooperate with the air inlet pipe (2).

6. The air circuit of a fuel cell system according to claim 5, characterized in that: The bracket (3-2) has an air collection port (3-2-1) connected to the air intake pipe (2) on the side near the air inlet (3-1-1) of the outer shell. The rest of the side is enclosed. The side of the bracket (3-2) near the air outlet (3-1-2) of the outer shell is enclosed. The rest of the bracket (3-2) has a number of mounting holes (3-2-2) for installing the filter screen.

7. The air circuit of a fuel cell system according to claim 1, characterized in that: The outer shell (3-1) is a rectangular frame structure.

8. The air circuit of a fuel cell system according to claim 1, characterized in that: The air intake pipe (2) is also equipped with a flow meter (8), an intercooler (4), and an air compressor (5).

9. The air circuit of a fuel cell system according to claim 1 or 8, characterized in that: An air filter (6) is provided between the air intake pipe (2) and the air source.

10. The air circuit of a fuel cell system according to claim 1, characterized in that: A silencer (7) is provided on the air outlet pipe of the fuel cell stack module.

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