CN114152458A

CN114152458A - Fuel cell air humidifier performance testing device and method

Info

Publication number: CN114152458A
Application number: CN202111413059.XA
Authority: CN
Inventors: 唐小林; 颜勤伟
Original assignee: Suzhou Hydrogen New Energy Technology Co ltd
Current assignee: Suzhou Hydrogen New Energy Technology Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-03-08

Abstract

The invention discloses a performance testing device of a fuel cell air humidifier, which comprises: a fuel cell simulator connected to the target humidifier; the wet air generating unit is connected to an air inlet of the target humidifier through a first pipeline and used for providing wet air which meets preset flow, pressure, temperature and humidity for the target humidifier; the dry air generating unit is connected to an air inlet of a target humidifier through the first pipeline and used for providing dry air which meets preset flow, pressure and temperature for the target humidifier; the first sensor assembly is arranged on the first pipeline and at least used for acquiring pressure, temperature and humidity data of air entering the target humidifier; and the second pipeline is connected to the exhaust port of the target humidifier, and a back pressure valve is arranged on the second pipeline. In addition, the invention also discloses a fuel cell air humidifier air tightness test method and a fuel cell air humidifier performance test method.

Description

Fuel cell air humidifier performance testing device and method

Technical Field

The invention relates to the field of fuel cells, in particular to a device and a method for testing the performance of an air humidifier of a fuel cell.

Background

The fuel cell has the characteristics of energy conservation, high conversion efficiency, no need of petroleum fuel, zero emission pollution, performance close to that of an internal combustion engine and the like, and is the best power source for treating environmental pollution and energy failure at present.

The air humidifier is an important component of the fuel cell system, and provides wet gas under different conditions for fuel cell reaction power generation so as to meet the requirements of the fuel cell system on reaction air under different working conditions.

The air humidifier has multiple types, the requirements of each manufacturer on the humidifier are different, the air humidifier test faces the problems of inconsistent model and specification power, single test condition, low test efficiency and ambiguous test method, and the fuel cell air humidifier test equipment in the market has poor compatibility and cannot be comprehensively applied to the test of fuel cell humidifiers with different power types.

Disclosure of Invention

In view of the above technical problems, the present invention provides a performance testing apparatus for a fuel cell air humidifier, which is applied to performance testing of fuel cell air humidifiers with different power types. Correspondingly, the invention also provides a fuel cell air humidifier performance test method and a fuel cell air humidifier air tightness test method, so as to simplify and standardize the test steps of the fuel cell air humidifier and improve the test efficiency.

According to an aspect of the present invention, there is provided a fuel cell air humidifier performance testing apparatus, comprising:

a fuel cell simulator connected to the target humidifier;

the wet air generating unit is connected to an air inlet of the target humidifier through a first pipeline and used for providing wet air which meets preset flow, pressure, temperature and humidity for the target humidifier;

the dry air generating unit is connected to an air inlet of a target humidifier through the first pipeline and used for providing dry air which meets preset flow, pressure and temperature for the target humidifier;

the first sensor assembly is arranged on the first pipeline and at least used for acquiring pressure, temperature and humidity data of air entering the target humidifier;

the second pipeline is connected to the exhaust port of the target humidifier, and a back pressure valve is arranged on the second pipeline;

the second sensor assembly is arranged on the second pipeline, is positioned between the back pressure valve and the exhaust port and is at least used for acquiring pressure, temperature and humidity data of air flowing out of the target humidifier; and

and the upper computer is used for setting parameters of the fuel cell simulator and output pressure parameters of the back pressure valve according to the test working condition, drawing a flow resistance curve of the fuel cell air humidifier according to the difference of real-time pressures of air entering and flowing out of the target humidifier, and drawing a humidification characteristic curve of the fuel cell air humidifier according to the difference of real-time humidity of the air entering and flowing out of the target humidifier.

In one embodiment of the present invention, the humid air generating unit includes:

a water tank storing deionized water;

the humidifying tank is connected to the water tank through a third pipeline; the humidifying tank is provided with a heating component and a cooling component and is used for adjusting the temperature of deionized water in the humidifying tank; and

a fourth pipeline connected to an air inlet of the humidification tank; the fourth pipeline is provided with a first pressure reducing valve and a first electromagnetic valve for conveying air with preset pressure to the humidifying tank; and

a plurality of fifth pipelines, one end of each fifth pipeline is connected to the exhaust port of the humidifying tank, and the other end of each fifth pipeline is connected to the first pipeline; and each fifth pipeline is provided with a group of electromagnetic valves with preset specifications, a mass flow controller and a heating and heat-preserving belt for controlling the flow, pressure and temperature of the wet air flowing into the target humidifier from the humidifying tank.

In one embodiment of the present invention, the dry air generating unit includes: one end of the sixth pipeline is introduced with external air, and the other end of the sixth pipeline is connected to the first ends of the seventh pipelines; the sixth pipeline is provided with a second pressure reducing valve and a second electromagnetic valve for conveying air with preset pressure to the seventh pipeline; a second end of each of the seventh pipelines is connected to the first pipeline; and each seventh pipeline is provided with a group of electromagnetic valves with preset specifications, a mass flow controller and a heating and heat preservation belt for controlling the flow, pressure and temperature of the dry air flowing into the target humidifier from the sixth pipeline.

In one embodiment of the present invention, the first sensor assembly includes a first pressure sensor, a first temperature sensor, and a first humidity sensor.

In one embodiment of the present invention, the second sensor assembly includes a second pressure sensor, a second temperature sensor and a second humidity sensor.

In an embodiment of the present invention, the performance testing apparatus of the fuel cell air humidifier further includes a plurality of eighth pipelines, one end of each of the eighth pipelines is connected to the first pipeline, and the other end of each of the eighth pipelines is communicated with the outside; and the eighth pipeline is provided with a control valve for regulating the pressure of the gas in the first pipeline.

In an embodiment of the present invention, the performance testing apparatus of the fuel cell air humidifier further includes a ninth pipeline, one end of the ninth pipeline is introduced with the test gas, and the other end of the ninth pipeline is connected to the first pipeline; the ninth pipeline is provided with a third pressure reducing valve and a third electromagnetic valve.

The performance testing device of the fuel cell air humidifier provided by the invention can be applied to the performance testing of fuel cell air humidifiers with different power types, and has the advantages of wide coverage, high testing efficiency and high reliability.

According to another aspect of the present invention, there is provided a fuel cell air humidifier airtightness testing method using the fuel cell air humidifier performance testing apparatus as described above, comprising the steps of:

adjusting the output pressure of the third pressure reducing valve according to the pressure range of the target humidifier;

controlling the third solenoid valve to open to flow the test gas into the target humidifier;

acquiring first pressure data of test gas flowing out of the target humidifier after a third electromagnetic valve is opened for a first time;

acquiring second pressure data of the test gas flowing out of the target humidifier after the third electromagnetic valve is opened for a second time;

comparing a difference between the first pressure data and the second pressure data;

if the difference value is equal to 0, the target humidifier has no leakage, and the air tightness test is passed; otherwise, the target humidifier is leaked, and the air tightness test is not passed.

The air tightness testing method of the fuel cell air humidifier provided by the invention can simplify and standardize the air tightness testing steps of the fuel cell air humidifier and improve the testing efficiency.

According to still another aspect of the present invention, there is provided a fuel cell air humidifier performance test method using the fuel cell air humidifier performance test apparatus as described above, including the steps of:

setting a test working condition of a target humidifier, and taking wet air as a test medium;

setting parameters of a fuel cell simulator, air inlet pressure parameters of a wet air generating unit and output pressure parameters of a back pressure valve according to the test working condition;

according to the power of a target humidifier, providing humid air which meets preset flow, pressure, temperature and humidity to the target humidifier through a humid air generating unit;

acquiring real-time pressure data of gas in a first pipeline and a second pipeline;

drawing a flow resistance curve of the target air humidifier according to the difference of real-time pressure data of the gases in the first pipeline and the second pipeline to finish the flow resistance test of the humid air of the target air humidifier;

acquiring real-time humidity data of gas in a first pipeline and a second pipeline;

and drawing a humidifying characteristic curve of the target air humidifier according to the difference of the real-time humidity data of the gas in the first pipeline and the gas in the second pipeline, and completing the test of the humidifying capacity of the humid air of the target air humidifier.

The performance test method of the fuel cell air humidifier provided by the invention can simplify and standardize the test steps of the fuel cell air humidifier and improve the test efficiency.

setting a test working condition of a target humidifier, and taking dry air as a test medium;

setting parameters of a fuel cell simulator, air inlet pressure parameters of a dry air generating unit and output pressure parameters of a back pressure valve according to the test working condition;

according to the power of a target humidifier, dry air which meets preset flow, pressure and temperature is provided for the target humidifier through a dry air generating unit;

drawing a flow resistance curve of the target air humidifier according to the difference of real-time pressure data of the gas in the first pipeline and the gas in the second pipeline to finish the flow resistance test of dry air of the target air humidifier;

and drawing a humidification characteristic curve of the target air humidifier according to the difference of the real-time humidity data of the gas in the first pipeline and the gas in the second pipeline, and completing the dry air humidification capacity test of the target air humidifier.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic diagram of the overall structure of a fuel cell air humidifier performance testing apparatus according to an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a humid air generating unit in the performance testing apparatus of the fuel cell air humidifier shown in fig. 1.

Fig. 3 is an enlarged schematic view of a humid air generating unit in the performance testing apparatus of the fuel cell air humidifier shown in fig. 1.

Fig. 4 is a flow chart of a method for testing the air tightness of the fuel cell air humidifier according to an embodiment of the present invention.

Fig. 5 is a flow chart of a method for testing the performance of a fuel cell air humidifier in accordance with an embodiment of the present invention.

Fig. 6 is a flow chart of a fuel cell air humidifier performance testing method in another embodiment of the present invention.

Reference numerals

101 water tank

102 humidification tank

103 third pipeline

104 heating assembly

105 cooling assembly

106 fourth pipeline

107 first pressure reducing valve

108 first solenoid valve

109 first unit solenoid valve

110 first unit mass flow controller

111 first unit heating insulation belt

112 fifth pipeline

200 first pipeline

201 first pressure sensor

202 first temperature sensor

203 first humidity sensor

300 target humidifier

400 fuel cell simulator

500 second pipeline

501 second pressure sensor

502 second temperature sensor

503 second humidity sensor

504 backpressure valve

505 tenth conduit

506 heat exchanger

507 steam-water separator

600 sixth pipeline

601 second pressure reducing valve

602 second solenoid valve

700 seventh pipeline

701 second unit electromagnetic valve

702 second cell mass flow controller

703 second unit heating and heat-insulating belt

800 eighth pipeline

900 ninth tube

901 third pressure reducing valve

902 third solenoid valve

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted. It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1

Fig. 1 is a schematic diagram showing the overall structure of a fuel cell air humidifier performance testing apparatus according to an embodiment of the present invention; fig. 2 is an enlarged schematic view of a humid air generating unit in the performance testing apparatus of the fuel cell air humidifier shown in fig. 1; and fig. 3 is an enlarged schematic view of a humid air generating unit in the performance testing apparatus of the fuel cell air humidifier shown in fig. 1. According to an aspect of the present invention, there is provided a fuel cell air humidifier performance testing apparatus, comprising: a fuel cell simulator 400, a wet air generating unit, a dry air generating unit, a first sensor assembly, a first pipeline 200, a second pipeline 500, a second sensor assembly, and an upper computer. The fuel cell simulator 400 is connected to the target humidifier 300. The humid air generating unit is connected to an air inlet of the target humidifier 300 through the first pipe 200, and is configured to provide humid air to the target humidifier 300 according to a predetermined flow rate, pressure, temperature, and humidity. The dry air generating unit is connected to an air inlet of the target humidifier 300 through the first pipe 200, and is configured to provide dry air to the target humidifier 300 according to a preset flow rate, pressure and temperature. The first sensor assembly is disposed in the first conduit 200 and is configured to at least obtain pressure, temperature, and humidity data of the air entering the target humidifier 300. The second pipe 500 is connected to the exhaust of the target humidifier 300, and a back pressure valve 504 is disposed on the second pipe 500. The second sensor assembly is disposed in the second conduit 500 and between the back pressure valve 504 and the exhaust port to at least obtain pressure, temperature, and humidity data of the air flowing out of the target humidifier 300. The upper computer is used for setting parameters of the fuel cell simulator 400 and output pressure parameters of the back pressure valve 504 according to test conditions, drawing a flow resistance curve of the fuel cell air humidifier according to a difference between real-time pressures of air entering and flowing out of the target humidifier 300, and drawing a humidification characteristic curve of the fuel cell air humidifier according to a difference between real-time humidities of the air entering and flowing out of the target humidifier 300.

As shown in fig. 2, the humid air generating unit may include: the water tank 101, the humidification tank 102, a third pipeline 103, a fourth pipeline 106, and a plurality of fifth pipelines 112. The water tank 101 stores deionized water. The humidification tank 102 is connected to the water tank 101 through a third pipe 103. The humidification tank 102 is provided with a heating assembly 104 and a cooling assembly 105 for adjusting the temperature of the deionized water in the humidification tank 102. The heating element 104 and the cooling element 105 may be implemented by any conventional technique, and will not be described herein. The fourth line 106 is connected to the inlet of the humidification tank 102. The fourth pipeline 106 is provided with a first pressure reducing valve 107 and a first solenoid valve 108 for supplying air with a predetermined pressure to the humidification tank 102. One end of the fifth pipeline 112 is connected to the exhaust port of the humidification tank 102, and the other end is connected to the first pipeline 200. Each fifth pipeline 112 is provided with a set of electromagnetic valves, mass flow controllers and heating and heat-preserving belts with preset specifications for controlling the flow, pressure and temperature of the humid air flowing from the humidification tank 102 into the target humidifier 300. And thus may be used to perform performance tests on target humidifiers 300 of different power specifications. Of course, it should be understood by those skilled in the art that a water pump may be further disposed on the third pipeline 103 as required to supply water to the humidification tank 102.

As shown in fig. 3, the dry air generating unit may include: a sixth pipeline 600, one end of the sixth pipeline 600 is introduced with external air, and the other end is connected to the first ends of the seventh pipelines 700. A second pressure reducing valve 601 and a second solenoid valve 602 are disposed on the sixth pipeline 600, and are used for delivering air with a preset pressure to the seventh pipeline 700. A second end of each of the seventh pipes 700 is connected to the first pipe 200. Each seventh pipeline 700 is provided with a set of electromagnetic valves, mass flow controllers, and heating and heat-preserving belts of predetermined specifications for controlling the flow, pressure, and temperature of the dry air flowing into the target humidifier 300 from the sixth pipeline 600. And thus may be used to perform performance tests on target humidifiers 300 of different power specifications.

Further, the first sensor assembly may include a first pressure sensor 201, a first temperature sensor 202, and a first humidity sensor 203. Pressure, temperature and humidity data of the air entering the target humidifier 300 may thus be acquired. The second sensor assembly may include a second pressure sensor 501, a second temperature sensor 502, and a second humidity sensor 503. Pressure, temperature and humidity data of the air exiting the target humidifier 300 may thus be acquired.

As shown in fig. 1, the performance testing apparatus of the fuel cell air humidifier may further include a plurality of eighth pipes 800, one end of each of the eighth pipes 800 is connected to the first pipe, and the other end of each of the eighth pipes 800 is communicated with the outside; a control valve is arranged on the eighth pipeline 800 to regulate the pressure of the gas in the first pipeline. Specifically, a safety valve is disposed on an eighth pipeline, an electromagnetic valve may be disposed on an eighth pipeline 800, and a throttle valve may be disposed on an eighth pipeline 800. The pressure of the gas in the first pipeline 200 can be adjusted by controlling the opening or closing of the safety valve, the electromagnetic valve and the throttle valve, so that the potential safety hazard is reduced.

Further, the performance testing apparatus of the fuel cell air humidifier may further include a ninth pipe 900, one end of the ninth pipe 900 is introduced with the test gas, and the other end of the ninth pipe 900 is connected to the first pipeline 200. The ninth pipe 900 is provided with a third pressure reducing valve 901 and a third electromagnetic valve 902. The target humidifier 300 can thus be subjected to the airtightness test.

In addition, the performance testing device of the fuel cell air humidifier of the present invention may further comprise a waste heat recovery assembly, wherein the waste heat recovery assembly comprises a heat exchanger 506 and a tenth pipeline 505, and an air inlet of the heat exchanger 506 is connected to the second pipeline 500. One end of the tenth pipeline 505 is connected to cooling water, and the other end is connected to a water inlet of the heat exchanger 506. This allows heat of the gas flowing through the second pipe 500 to be recovered, thereby facilitating recycling of resources.

In addition, the performance testing device of the fuel cell air humidifier of the invention can further comprise a steam-water separator 507, and the steam-water separator 507 is connected to the exhaust port of the heat exchanger 506. This allows the moisture in the gas flowing through the second pipe 500 to be recovered, thereby promoting the recycling of resources. The heat exchanger 506 may be a plate heat exchanger 506.

In conclusion, the performance testing device for the fuel cell air humidifier provided by the invention can be applied to the performance testing of fuel cell air humidifiers with different power types, and has the advantages of wide coverage, high testing efficiency and high reliability.

Example 2

Fig. 4 is a flow chart of a method for testing the air tightness of the fuel cell air humidifier according to an embodiment of the present invention. As shown in fig. 4, according to another aspect of the present invention, there is provided a fuel cell air humidifier airtightness testing method using the fuel cell air humidifier performance testing apparatus as described above, comprising the steps of:

s110, the output pressure of the third reducing valve 901 is adjusted according to the pressure range of the target humidifier 300.

S120, the third solenoid valve 902 is controlled to open so that the test gas flows into the target humidifier 300.

S130, acquiring first pressure data of the test gas flowing out of the target humidifier 300 after the third solenoid valve 902 is opened for a first time. The first time may be 2 minutes until the first pressure data is stable.

S140, acquiring second pressure data of the test gas flowing out of the target humidifier 300 after the third solenoid valve 902 is opened for a second time. The second time may be set as desired, and may be, for example, 5 minutes.

S150, comparing the difference value of the first pressure data and the second pressure data.

S160, if the difference is equal to 0, the target humidifier 300 has no leakage, and the air tightness test is passed.

S170, if the difference is not equal to 0, the target humidifier 300 leaks, and the air tightness test fails.

Example 3

Fig. 5 is a flow chart of a method for testing the performance of a fuel cell air humidifier in accordance with an embodiment of the present invention. As shown in fig. 5. According to still another aspect of the present invention, there is provided a fuel cell air humidifier performance test method using the fuel cell air humidifier performance test apparatus according to embodiment 1, including the steps of:

and S210, setting the test working condition of the target humidifier 300, and taking humid air as a test medium.

S220, setting parameters of the fuel cell simulator 400, air inlet pressure parameters of the humid air generating unit and output pressure parameters of the back pressure valve 504 according to the test working conditions.

S230, according to the power of the target humidifier 300, providing the humid air according to a preset flow, pressure, temperature and humidity to the target humidifier 300 through a humid air generating unit.

For example, if the air humidifier has a low power of 0 to 10kW, the first solenoid valve 108, the second solenoid valve 602, and the first unit solenoid valve 109 in the fifth pipeline 112 are opened by the host computer. The first unit heat-preservation heating belt on the fifth pipeline 112 is adjusted according to the test condition to maintain the requirement of the target fuel cell humidifier on the gas temperature, and the first unit mass flow controller 110 on the fifth pipeline 112 is adjusted to meet the requirement of the test condition, so that the gas meeting the condition enters the target fuel cell air humidifier. If the air humidifier is an air humidifier with medium power of 10-100 kW, the first electromagnetic valve 108, the second electromagnetic valve 602 and the first unit electromagnetic valve 109 in the other fifth pipeline 112 are opened through the upper computer. And adjusting the first unit heat-preservation heating belt on the other fifth pipeline 112 according to the test working condition to maintain the requirement of the target fuel cell humidifier on the gas temperature, and adjusting the first unit mass flow controller 110 on the other fifth pipeline 112 to meet the requirement of the test working condition, so that the gas meeting the condition enters the target fuel cell air humidifier. If the high-power air humidifier is a high-power air humidifier with the power of more than 100kW, the upper computer opens the first electromagnetic valve 108, the second electromagnetic valve 602 and the first unit electromagnetic valve 109 in the fifth pipeline 112, the first unit heat-preservation heating belt on the fifth pipeline 112 is adjusted according to the test working condition to maintain the requirement of the target fuel cell humidifier on the gas temperature, and the first unit mass flow controller 110 on the fifth pipeline 112 is adjusted to meet the requirement of the test working condition, so that the gas meeting the condition enters the target fuel cell air humidifier.

S240, obtain real-time pressure data of the gas in the first pipeline 200 and the second pipeline 500.

And S250, drawing a flow resistance curve of the target air humidifier according to the difference of the real-time pressure data of the gases in the first pipeline 200 and the second pipeline 500, and completing the flow resistance test of the humid air of the target air humidifier.

S260, acquiring real-time humidity data of the gas in the first pipeline 200 and the second pipeline 500.

S270, drawing a humidifying characteristic curve of the target air humidifier according to the difference of the real-time humidity data of the gas in the first pipeline 200 and the gas in the second pipeline 500, and completing the test of the humidifying capacity of the humid air of the target air humidifier.

Example 4

Fig. 6 is a flow chart of a fuel cell air humidifier performance testing method in another embodiment of the present invention. As shown in fig. 6, the present invention also provides another fuel cell air humidifier performance testing method, which uses the fuel cell air humidifier performance testing apparatus according to embodiment 1, and includes the following steps:

and S310, setting the test working condition of the target humidifier 300 and taking dry air as a test medium.

S320, setting parameters of the fuel cell simulator 400, parameters of the air inlet pressure of the dry air generating unit and parameters of the output pressure of the backpressure valve 504 according to the test working conditions.

S330, according to the power of the target humidifier 300, dry air according to a preset flow, pressure and temperature is provided to the target humidifier 300 through the dry air generating unit.

For example, if the air humidifier is a 0 to 10kW low power air humidifier, the first solenoid valve 108, the second solenoid valve 602, and the second unit solenoid valve 701 in the seventh pipeline 700 are opened by the upper computer. And adjusting the second unit heat-preservation heating belt on the seventh pipeline 700 according to the test working condition to maintain the requirement of the target fuel cell humidifier on the gas temperature, and adjusting the second unit mass flow controller 702 on the seventh pipeline 700 to meet the requirement of the test working condition, so that the gas meeting the condition enters the target fuel cell air humidifier. If the air humidifier is an air humidifier with medium power of 10-100 kW, the first electromagnetic valve 108, the second electromagnetic valve 602 and the second unit electromagnetic valve 701 in the other seventh pipeline 700 are opened through the upper computer. And adjusting the second unit heat-preservation heating belt on the other seventh pipeline 700 according to the test working condition to maintain the requirement of the target fuel cell humidifier on the gas temperature, and adjusting the second unit mass flow controller 702 on the other seventh pipeline 700 to meet the requirement of the test working condition, so that the gas meeting the condition enters the target fuel cell air humidifier. If the high-power air humidifier is a high-power air humidifier with the power of more than 100kW, the first electromagnetic valve 108, the second electromagnetic valve 602 and the second unit electromagnetic valve 701 in the seventh pipeline 700 are opened through the upper computer, the second unit heat-preservation heating belt on the seventh pipeline 700 is adjusted according to the test working condition to maintain the requirement of the target fuel cell humidifier on the gas temperature, and the second unit mass flow controller 702 on the seventh pipeline 700 is adjusted to meet the requirement of the test working condition, so that the gas meeting the condition enters the target fuel cell air humidifier.

S340, obtain real-time pressure data of the gas in the first pipeline 200 and the second pipeline 500.

And S350, drawing a flow resistance curve of the target air humidifier according to the difference between the real-time pressure data of the gas in the first pipeline 200 and the gas in the second pipeline 500, and completing the flow resistance test of the dry air of the target air humidifier.

S360, obtain real-time humidity data of the gas in the first pipeline 200 and the second pipeline 500.

S370, drawing a humidification characteristic curve of the target air humidifier according to a difference between real-time humidity data of the gases in the first pipeline 200 and the second pipeline 500, and completing the dry air humidification capability test of the target air humidifier.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell air humidifier performance testing apparatus, comprising:

a fuel cell simulator connected to the target humidifier;

2. The fuel cell air humidifier performance testing apparatus according to claim 1, wherein the humid air generating unit includes:

a water tank storing deionized water;

3. The fuel cell air humidifier performance testing apparatus according to claim 1, wherein the dry air generating unit includes: one end of the sixth pipeline is introduced with external air, and the other end of the sixth pipeline is connected to the first ends of the seventh pipelines; the sixth pipeline is provided with a second pressure reducing valve and a second electromagnetic valve for conveying air with preset pressure to the seventh pipeline; a second end of each of the seventh pipelines is connected to the first pipeline; and each seventh pipeline is provided with a group of electromagnetic valves with preset specifications, a mass flow controller and a heating and heat preservation belt for controlling the flow, pressure and temperature of the dry air flowing into the target humidifier from the sixth pipeline.

4. The fuel cell air humidifier performance testing apparatus of claim 1, wherein the first sensor assembly includes a first pressure sensor, a first temperature sensor, and a first humidity sensor.

5. The fuel cell air humidifier performance testing apparatus of claim 1, wherein the second sensor assembly includes a second pressure sensor, a second temperature sensor, and a second humidity sensor.

6. The fuel cell air humidifier performance testing device according to claim 1, further comprising a plurality of eighth pipelines, one end of each eighth pipeline is connected to the first pipeline, the other end of each eighth pipeline is communicated with the outside, and a control valve is arranged on each eighth pipeline and used for adjusting the pressure of the gas in the first pipeline.

7. The fuel cell air humidifier performance testing apparatus according to claim 1, further comprising a ninth conduit, one end of which is fed with the test gas, and the other end of which is connected to the first conduit; the ninth pipeline is provided with a third pressure reducing valve and a third electromagnetic valve.

8. A fuel cell air humidifier airtightness testing method, characterized by using the fuel cell air humidifier performance testing apparatus according to claim 7, comprising the steps of:

9. A fuel cell air humidifier performance test method characterized by employing the fuel cell air humidifier performance test apparatus according to any one of claims 1 to 7, comprising the steps of:

10. A fuel cell air humidifier performance test method characterized by using the fuel cell air humidifier performance test apparatus according to any one of claims 1 to 7, comprising the steps of.