Hydrogen fuel cell system test board

Abstract

The utility model discloses a hydrogen fuel cell system testboard, which comprises a gas circuit and a water circuit, the gas circuit is used for carrying out an airtight test on a hydrogen fuel cell system, and the water circuit is used for cooling and radiating accessories of the hydrogen fuel cell system in the test; the gas circuit comprises a gas source gas inlet pipe, a gas source triple piece arranged at one end of the gas source gas inlet pipe, and an air pipeline and a hydrogen pipeline which are respectively arranged at one end of the gas source triple piece; the air pipeline and the hydrogen pipeline are each provided with a stop valve and a residual pressure release valve. Through cooperation of the gas source gas inlet pipe, the gas source triple piece, the air pipeline, the hydrogen pipeline, the stop valve and the residual pressure release valve, potential safety hazards in testing are avoided, the reliability and safety of detection are effectively improved, high-precision and easy-to-operate airtight testing of the hydrogen fuel cell system is achieved, and the testing efficiency is improved. Therefore, powerful support is provided for development and optimization of a fuel cell system.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell testing technology, and in particular to a test bench for a hydrogen fuel cell system. Background Technology

[0002] With the increasing severity of the global energy crisis and environmental pollution, people are actively seeking new clean and efficient energy sources to replace traditional fossil fuels. Against this backdrop, fuel cells, as a power generation technology with numerous advantages such as fuel versatility, low noise, minimal environmental pollution, good maintainability, and high reliability, have received widespread attention and importance. Hydrogen fuel cells, in particular, are considered one of the most promising new environmentally friendly and efficient power generation technologies of the 21st century.

[0003] Hydrogen fuel cells convert hydrogen and oxygen into electricity and water through an electrochemical reaction, producing no harmful substances and exhibiting high energy conversion efficiency. Therefore, hydrogen fuel cells are widely used in the power systems of vehicles, submarines, aircraft, and other machines, demonstrating enormous application potential and market prospects.

[0004] However, the development and production of hydrogen fuel cell systems require testing and verification of their airtightness. Therefore, a hydrogen fuel cell system test bench is needed as a foundation for fuel cell system development. However, existing hydrogen fuel cell system test benches suffer from low testing accuracy and complex operation, hindering the further development and application of hydrogen fuel cell technology. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a test bench for a hydrogen fuel cell system.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a hydrogen fuel cell system test bench, comprising: a gas path and a water path, wherein the gas path is used to perform airtightness testing on the hydrogen fuel cell system, and the water path is used to cool and dissipate heat from the accessories of the hydrogen fuel cell system during the test.

[0007] The gas path includes: a gas source inlet pipe, a gas source triplet installed at one end of the gas source inlet pipe, and an air pipeline and a hydrogen pipeline respectively installed at one end of the gas source triplet; both the air pipeline and the hydrogen pipeline are equipped with a shut-off valve and a residual pressure relief valve.

[0008] One end of the gas source inlet pipe is used to input industrial gas during the test process, one end of the air pipeline is used for the air end connection of the hydrogen fuel cell, and one end of the hydrogen pipeline is used for the hydrogen end connection of the hydrogen fuel cell.

[0009] In a preferred embodiment of this utility model, the air source triplet includes an air filter, a pressure regulating valve, and an oil mist lubricator connected in sequence, used to purify, filter, and reduce the pressure of the air source to supply the rated air source pressure to the air circuit.

[0010] In a preferred embodiment of this utility model, a digital pressure gauge for displaying the gas pressure in the gas circuit is installed between the shut-off valve and the residual pressure relief valve on both the air pipeline and the hydrogen pipeline.

[0011] In a preferred embodiment of the present invention, the water circuit includes: a radiator, a water source inlet pipe installed at the inlet end of the radiator, and a water source outlet pipe installed at the outlet end of the radiator; a water pump is installed on the water source outlet pipe.

[0012] In a preferred embodiment of this invention, the water source input pipe and the water source output pipe are used to form a loop through the hydrogen fuel cell system accessories during testing to achieve cooling and heat dissipation.

[0013] In a preferred embodiment of this utility model, an expansion tank is installed in parallel on the water source output pipe and the water source input pipe between the radiator and the water pump. This expansion tank is used to accommodate the expansion of water in the water circuit, and to maintain pressure and replenish water to the water circuit.

[0014] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0015] (1) This utility model provides a test bench for a hydrogen fuel cell system. By constructing a gas path, the gas tightness test of the hydrogen fuel cell system is achieved. After connecting one end of the air pipeline and the hydrogen pipeline to the air end and the hydrogen end of the hydrogen fuel cell under test, respectively, the gas source inlet pipe, gas source triplet, air pipeline, hydrogen pipeline, shut-off valve and residual pressure release valve are coordinated to not only avoid potential safety hazards in the test and effectively improve the reliability and safety of the test, but also realize high-precision and easy-to-operate gas tightness test of the hydrogen fuel cell system, thereby providing strong support for the development and optimization of the fuel cell system.

[0016] (2) In this utility model, the hydrogen fuel cell system accessories are cooled and dissipated through the water circuit. During the testing of the hydrogen fuel cell, the cooling and heat dissipation loop is formed by the cooperation of the water source input pipe, water source output pipe, radiator, water pump and expansion tank. The loop passes through the hydrogen fuel cell system accessories to achieve the cooling and heat dissipation function, ensuring that the hydrogen fuel cell system test bench maintains stable heat dissipation performance during long-term and high-intensity testing, thereby extending the service life of the equipment and improving the accuracy of the test. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0019] In the diagram: 1. Gas path; 11. Gas source inlet pipe; 12. Gas source triplet; 13. Air line; 14. Hydrogen line; 15. Shut-off valve; 16. Residual pressure relief valve; 17. Digital pressure gauge; 2. Water path; 21. Radiator; 22. Water source inlet pipe; 23. Water source outlet pipe; 24. Water pump; 25. Expansion tank. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] like Figure 1 As shown, a hydrogen fuel cell system test bench includes: a gas path 1 and a water path 2. The gas path 1 is used to perform airtightness testing on the hydrogen fuel cell system, and the water path 2 is used to cool and dissipate heat from the accessories of the hydrogen fuel cell system during the test. The gas path 1 includes: a gas source inlet pipe 11, a gas source triplet 12 installed at one end of the gas source inlet pipe 11, and an air pipe 13 and a hydrogen pipe 14 respectively installed at one end of the gas source triplet 12. Both the air pipe 13 and the hydrogen pipe 14 are equipped with a shut-off valve 15 and a residual pressure relief valve 16. One end of the gas source inlet pipe 11 is used to input industrial gas during the test process, one end of the air pipe 13 is used for the air end connection of the hydrogen fuel cell, and one end of the hydrogen pipe 14 is used for the hydrogen end connection of the hydrogen fuel cell.

[0022] It should be noted that the gas source triplet 12 includes an air filter, a pressure regulating valve, and an oil mist lubricator connected in sequence. These components are used to purify, filter, and reduce the pressure of the gas source to supply the rated gas source pressure to gas path 1. The gas source triplet 12 is a general standard part or a component known to those skilled in the art. Its structure and principle are known to those skilled in the art through technical manuals or conventional experimental methods, and will not be described in detail here. After connecting one end of the air line 13 and the hydrogen line 14 to the air end and hydrogen end of the hydrogen fuel cell under test, respectively, the industrial gas source is input through the gas source inlet pipe 11. The gas passes through the gas source triplet 12, sequentially through the filter, pressure regulating valve, and oil mist lubricator, ensuring that the gas entering gas path 1 is of the highest quality. The gas supply line 1 is made of pure, stable, and well-lubricated gas to ensure that the gas pressure and quality meet the testing requirements and improve the accuracy of the test. The gas is then split into two streams: one through the air line 13 and the other through the hydrogen line 14, to the air and hydrogen ends of the hydrogen fuel cell, respectively, for airtightness testing. After the test, the gas flow is controlled by the shut-off valve 15, and the residual pressure release valve 16 can release the residual gas in the pipeline in a timely manner after the test, avoiding potential safety hazards and effectively improving the reliability and safety of the test. This achieves high-precision and easy-to-operate airtightness testing of the hydrogen fuel cell system, thus providing strong support for the development and optimization of the fuel cell system.

[0023] In some embodiments, a digital pressure gauge 17 for displaying the gas pressure in the gas line 1 is installed between the shut-off valve 15 and the residual pressure relief valve 16 on the air line 13 and the hydrogen line 14. By setting the digital pressure gauge 17, the gas pressure in the air line 13 and the hydrogen line 14 can be monitored in real time, which can help determine whether there is a leak in the system and whether the gas source pressure needs to be adjusted to meet the test requirements, thereby ensuring the accuracy of the airtightness test.

[0024] In some embodiments, the water circuit 2 includes: a radiator 21, a water inlet pipe 22 installed at the inlet end of the radiator 21, and a water outlet pipe 23 installed at the outlet end of the radiator 21; a water pump 24 is installed on the water outlet pipe 23.

[0025] It should be noted that the water inlet pipe 22 and the water outlet pipe 23 are used to form a loop through the hydrogen fuel cell system accessories during testing to achieve cooling and heat dissipation. A switch is installed at one end of both the water inlet pipe 22 and the water outlet pipe 23 to control the flow and allow for flexible adjustment of the cooling process. During hydrogen fuel cell testing, water is introduced into the radiator 21 through the water inlet pipe 22 for cooling. After heat dissipation, the water pump 24 on the water outlet pipe 23 provides sufficient water pressure to ensure smooth circulation of water in the water circuit 2, achieving cooling and heat dissipation functions. A cooling and heat dissipation loop is formed through the water outlet pipe 23, passing through hydrogen fuel cell system accessories such as the hydrogen pump, hydrogen pump controller, FDC air compressor, and air compressor controller, achieving cooling and heat dissipation functions. This ensures that the hydrogen fuel cell system test bench maintains stable heat dissipation performance during long-term, high-intensity testing, thereby extending the equipment's service life and improving testing accuracy.

[0026] In some embodiments, an expansion tank 25 is installed in parallel on the water source output pipe 23 and the water source input pipe 22 between the radiator 21 and the water pump 24 to accommodate the expansion of water in the water circuit 2, and to maintain pressure and replenish water to the water circuit 2. By setting up the expansion tank 25, the expansion of water in the water circuit 2 caused by temperature changes can be accommodated, and the pressure in the water circuit 2 can be kept stable. At the same time, it can automatically replenish water when the water in the water circuit 2 is insufficient, thereby ensuring the normal operation of the water circuit 2 system.

[0027] In use, this invention introduces an industrial gas source through the gas inlet pipe 11. This gas is purified, filtered, and depressurized to the rated pressure by the gas source triplet 12 (including an air filter, pressure regulating valve, and lubricator), ensuring that the gas supplied to gas line 1 is pure, has stable pressure, and is well lubricated. Subsequently, the gas is split into two streams, supplied to the air and hydrogen ends of the hydrogen fuel cell under test via air line 13 and hydrogen line 14, respectively, for airtightness testing. During the test, digital pressure gauges 17 on air line 13 and hydrogen line 14 monitor the gas pressure in real time to help determine if there are any leaks in the system and can adjust the gas source pressure as needed to meet the test requirements. After the test, the gas flow is controlled by the shut-off valve 15, and residual gas in the pipeline is released using the residual pressure relief valve 16 to ensure safety. Simultaneously, water path 2 introduces water into radiator 21 for cooling via water input pipe 22. After cooling, the water is supplied with sufficient pressure by water pump 24, forming a circulation loop in water output pipe 23. This circulation passes through hydrogen fuel cell system accessories such as hydrogen pump, hydrogen pump controller, air compressor, and air compressor controller, achieving cooling and heat dissipation functions. To ensure the stable operation of the water path 2 system, an expansion tank 25 is installed in parallel on the water output pipe 23 between radiator 21 and water pump 24. This tank accommodates the expansion of water in water path 2 due to temperature changes, maintains stable pressure in water path 2, and automatically replenishes water when the water level is insufficient. This enables high-precision, easy-to-operate airtightness testing and stable cooling and heat dissipation functions for the hydrogen fuel cell system, providing strong support for the development and optimization of the fuel cell system.

[0028] Based on the above description and the preferred embodiments of this utility model, it will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hydrogen fuel cell system test bench, comprising: The gas path (1) and water path (2) are characterized in that: the gas path (1) is used to perform airtightness testing on the hydrogen fuel cell system, and the water path (2) is used to cool and dissipate heat from the accessories of the hydrogen fuel cell system during the test; The gas path (1) includes: a gas source inlet pipe (11), a gas source triplet (12) installed at one end of the gas source inlet pipe (11), and an air line (13) and a hydrogen line (14) respectively installed at one end of the gas source triplet (12); both the air line (13) and the hydrogen line (14) are equipped with a shut-off valve (15) and a residual pressure relief valve (16); One end of the gas inlet pipe (11) is used to input industrial gas during the test process, one end of the air pipe (13) is used for the air end connection of the hydrogen fuel cell, and one end of the hydrogen pipe (14) is used for the hydrogen end connection of the hydrogen fuel cell.

2. The hydrogen fuel cell system test bench according to claim 1, characterized in that: The air source triplet (12) includes an air filter, a pressure regulating valve and an oil mist lubricator connected in sequence, used to purify, filter and reduce the pressure of the air source to supply the rated air source pressure to the air path (1).

3. The hydrogen fuel cell system test bench according to claim 1, characterized in that: A digital pressure gauge (17) for displaying the gas pressure in the gas line (1) is installed between the shut-off valve (15) and the residual pressure relief valve (16) on the air line (13) and the hydrogen line (14).

4. A hydrogen fuel cell system test bench according to claim 1, characterized in that: The water circuit (2) includes: a radiator (21), a water source input pipe (22) installed at the input end of the radiator (21), and a water source output pipe (23) installed at the output end of the radiator (21); a water pump (24) is installed on the water source output pipe (23).

5. A hydrogen fuel cell system test bench according to claim 4, characterized in that: The water inlet pipe (22) and the water outlet pipe (23) are used to form a loop path in the test to achieve cooling and heat dissipation of the hydrogen fuel cell system accessories.

6. A hydrogen fuel cell system test bench according to claim 4, characterized in that: An expansion tank (25) is installed in parallel on the water source output pipe (23) and the water source input pipe (22) between the radiator (21) and the water pump (24) to accommodate the expansion of water in the water circuit (2), and to maintain pressure and replenish water to the water circuit (2).

Images