Fuel cell air humidifier performance testing device and method

Abstract

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

Description

Technical Field

[0001] The present invention relates to the field of fuel cells, and in particular to a performance testing device and method for a fuel cell air humidifier. Background Art

[0002] Fuel cells have the characteristics of energy saving, high conversion efficiency, no need for petroleum fuel, zero emissions, and performance close to that of internal combustion engines. They are currently the best power source for dealing with environmental pollution and energy depletion.

[0003] The air humidifier is an important component of the fuel cell system, providing wet gas under different conditions for the fuel cell reaction to generate electricity, so as to meet the fuel cell system's demand for reaction air under different working conditions.

[0004] There are many types of air humidifiers, and each manufacturer has different requirements for humidifiers. The testing of air humidifiers faces problems such as inconsistent model specifications and power, single test conditions, low test efficiency, and unclear test methods. In addition, the fuel cell air humidifier testing equipment on the market is not compatible and cannot be fully applied to the testing of fuel cell humidifiers of different power types. Summary of the invention

[0005] In view of the above technical problems, the present invention provides a fuel cell air humidifier performance test device, which is applied to the performance test of fuel cell air humidifiers of different power types. Correspondingly, the present 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.

[0006] According to one aspect of the present invention, a fuel cell air humidifier performance test device is provided, which comprises:

[0007] a fuel cell simulator, connected to a target humidifier;

[0008] A humid air generating unit, connected to the air inlet of the target humidifier through a first pipeline, for providing humid air meeting a preset flow rate, pressure, temperature and humidity to the target humidifier;

[0009] a dry air generating unit, connected to the air inlet of the target humidifier through the first pipeline, for providing dry air meeting a preset flow rate, pressure and temperature to the target humidifier;

[0010] A first sensor assembly, disposed in the first pipeline, for obtaining at least pressure, temperature and humidity data of air entering the target humidifier;

[0011] a second pipeline connected to the exhaust port of the target humidifier, the second pipeline being provided with a back pressure valve;

[0012] a second sensor assembly, disposed in the second pipeline and located between the back pressure valve and the exhaust port, for obtaining at least pressure, temperature and humidity data of the air flowing out of the target humidifier; and

[0013] The host computer is used to set the parameters of the fuel cell simulator and the output pressure parameters of the back pressure valve according to the test conditions, draw the flow resistance curve of the fuel cell air humidifier according to the difference between the real-time pressures of the air entering and flowing out of the target humidifier, and draw the humidification characteristic curve of the fuel cell air humidifier according to the difference between the real-time humidity of the air entering and flowing out of the target humidifier.

[0014] In one embodiment of the present invention, the humid air generating unit comprises:

[0015] A water tank storing deionized water;

[0016] A humidifying tank connected to the water tank through a third pipeline; the humidifying tank is provided with a heating component and a cooling component for adjusting the temperature of the deionized water in the humidifying tank; and

[0017] a fourth pipeline connected to the air inlet of the humidification tank; a first pressure reducing valve and a first solenoid valve are provided on the fourth pipeline to deliver air of a preset pressure to the humidification tank; and

[0018] A plurality of fifth pipelines are connected at one end to the exhaust port of the humidification tank and at the other end to the first pipeline; each fifth pipeline is provided with a set of solenoid valves, mass flow controllers and heating insulation belts of preset specifications to control the flow, pressure and temperature of the humid air flowing from the humidification tank into the target humidifier.

[0019] In one embodiment of the present invention, the dry air generating unit includes: a sixth pipeline, one end of which is connected to the first ends of multiple seventh pipelines through which external air is introduced; the other end of the sixth pipeline is provided with a second pressure reducing valve and a second solenoid valve for delivering air of preset pressure to the seventh pipeline; the second end of each of the seventh pipelines is connected to the first pipeline; each of the seventh pipelines is provided with a set of solenoid valves of preset specifications, a mass flow controller and a heating and insulation belt for controlling the flow, pressure and temperature of the dry air flowing from the sixth pipeline into the target humidifier.

[0020] 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.

[0021] 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.

[0022] In one embodiment of the present invention, the fuel cell air humidifier performance testing device also includes a plurality of eighth pipelines, one end of the eighth pipeline is connected to the first pipeline, and the other end is connected to the outside; a control valve is provided on the eighth pipeline to adjust the pressure of the gas in the first pipeline.

[0023] In one embodiment of the present invention, the fuel cell air humidifier performance testing device also includes a ninth pipeline, one end of which is fed with test gas and the other end is connected to the first pipeline; a third pressure reducing valve and a third solenoid valve are provided on the ninth pipeline.

[0024] The fuel cell air humidifier performance test device proposed in the present invention can be applied to the performance test of fuel cell air humidifiers of different power types, with wide coverage, high test efficiency and reliability.

[0025] According to another aspect of the present invention, a method for testing the air tightness of a fuel cell air humidifier is provided, which uses the fuel cell air humidifier performance testing device as described above, and comprises the following steps:

[0026] adjusting the output pressure of the third pressure reducing valve according to the pressure range of the target humidifier;

[0027] controlling the third solenoid valve to open so that the test gas flows into the target humidifier;

[0028] Acquire first pressure data of the test gas flowing out of the target humidifier after the third solenoid valve is opened for a first time;

[0029] Acquire second pressure data of the test gas flowing out of the target humidifier after the third solenoid valve is opened for a second time;

[0030] comparing a difference between the first pressure data and the second pressure data;

[0031] If the difference is equal to 0, the target humidifier has no leakage and the air tightness test passes; otherwise, the target humidifier has a leakage and the air tightness test fails.

[0032] The fuel cell air humidifier air tightness testing method proposed by the present invention can simplify and standardize the test steps of the fuel cell air humidifier air tightness and improve the test efficiency.

[0033] According to another aspect of the present invention, a fuel cell air humidifier performance test method is provided, which uses the fuel cell air humidifier performance test device as described above, and comprises the following steps:

[0034] Set the test conditions of the target humidifier, using humid air as the test medium;

[0035] According to the test conditions, setting fuel cell simulator parameters, intake pressure parameters of the humid air generating unit, and back pressure valve output pressure parameters;

[0036] According to the power of the target humidifier, the humid air generating unit provides the target humidifier with humid air that meets the preset flow rate, pressure, temperature and humidity;

[0037] Obtaining real-time pressure data of the gas in the first pipeline and the second pipeline;

[0038] A flow resistance curve of the target air humidifier is drawn according to the difference between the real-time pressure data of the gas in the first pipeline and the second pipeline, and a wet air flow resistance test of the target air humidifier is completed;

[0039] Acquire real-time humidity data of the gas in the first pipeline and the second pipeline;

[0040] A humidification characteristic curve of the target air humidifier is drawn according to the difference between the real-time humidity data of the gas in the first pipeline and the second pipeline, and the wet air humidification capacity test of the target air humidifier is completed.

[0041] The fuel cell air humidifier performance test method proposed in the present invention can simplify and standardize the test steps of the fuel cell air humidifier and improve the test efficiency.

[0042] According to another aspect of the present invention, a fuel cell air humidifier performance test method is provided, which uses the fuel cell air humidifier performance test device as described above, and comprises the following steps:

[0043] Set the test conditions of the target humidifier, using dry air as the test medium;

[0044] According to the test conditions, setting fuel cell simulator parameters, intake pressure parameters of the dry air generating unit, and back pressure valve output pressure parameters;

[0045] According to the power of the target humidifier, the dry air generating unit provides the target humidifier with dry air that meets the preset flow rate, pressure and temperature;

[0046] Obtaining real-time pressure data of the gas in the first pipeline and the second pipeline;

[0047] A flow resistance curve of the target air humidifier is drawn according to the difference between the real-time pressure data of the gas in the first pipeline and the second pipeline, and a dry air flow resistance test of the target air humidifier is completed;

[0048] Acquire real-time humidity data of the gas in the first pipeline and the second pipeline;

[0049] A humidification characteristic curve of the target air humidifier is drawn according to the difference between the real-time humidity data of the gas in the first pipeline and the second pipeline, and the dry air humidification capacity test of the target air humidifier is completed.

[0050] The fuel cell air humidifier performance test method proposed in the present invention can simplify and standardize the test steps of the fuel cell air humidifier and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0052] Figure 1 It is a schematic diagram of the overall structure of a fuel cell air humidifier performance testing device in one embodiment of the present invention.

[0053] Figure 2 for Figure 1 An enlarged schematic diagram of the humid air generating unit in the fuel cell air humidifier performance test device is shown.

[0054] Figure 3 for Figure 1 An enlarged schematic diagram of the humid air generating unit in the fuel cell air humidifier performance test device is shown.

[0055] Figure 4 It is a flow chart of a method for testing the air tightness of a fuel cell air humidifier in one embodiment of the present invention.

[0056] Figure 5 It is a flow chart of a method for testing performance of a fuel cell air humidifier in one embodiment of the present invention.

[0057] Figure 6 It is a flow chart of a method for testing the performance of a fuel cell air humidifier in another embodiment of the present invention.

[0058] Reference numerals

[0059] 101 Water Tank

[0060] 102 Humidifier tank

[0061] 103 Third pipeline

[0062] 104 Heating element

[0063] 105 Cooling assembly

[0064] 106 Fourth pipeline

[0065] 107 First pressure reducing valve

[0066] 108 First solenoid valve

[0067] 109 First unit solenoid valve

[0068] 110 Unit 1 Mass Flow Controller

[0069] 111 Unit 1 Heating and Insulation Belt

[0070] 112 Fifth pipeline

[0071] 200 First pipeline

[0072] 201 First Pressure Sensor

[0073] 202 First temperature sensor

[0074] 203 First humidity sensor

[0075] 300 Target Humidifier

[0076] 400 Fuel Cell Simulator

[0077] 500 Second pipeline

[0078] 501 Second pressure sensor

[0079] 502 Second temperature sensor

[0080] 503 Second humidity sensor

[0081] 504 Back Pressure Valve

[0082] 505 Tenth pipeline

[0083] 506 Heat Exchanger

[0084] 507 Separator

[0085] 600 Sixth pipeline

[0086] 601 Second pressure reducing valve

[0087] 602 Second solenoid valve

[0088] 700 Seventh pipeline

[0089] 701 Second unit solenoid valve

[0090] 702 Second Unit Mass Flow Controller

[0091] 703 Unit 2 Heating and Insulation Belt

[0092] 800 Eighth Pipeline

[0093] 900 Ninth Tube

[0094] 901 Third pressure reducing valve

[0095] 902 Third solenoid valve DETAILED DESCRIPTION

[0096] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention will be comprehensive and complete, and the concept of example embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted. It should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0097] Example 1

[0098] Figure 1 It is a schematic diagram of the overall structure of a fuel cell air humidifier performance test device in one embodiment of the present invention; Figure 2 for Figure 1 An enlarged schematic diagram of a humid air generating unit in a fuel cell air humidifier performance test device; and Figure 3 for Figure 1An enlarged schematic diagram of a humid air generating unit in a fuel cell air humidifier performance test device is shown. According to one aspect of the present invention, a fuel cell air humidifier performance test device is provided, which includes: a fuel cell simulator 400, a humid 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 a host computer. The fuel cell simulator 400 is connected to a target humidifier 300. The humid air generating unit is connected to the air inlet of the target humidifier 300 through the first pipeline 200, so as to provide the target humidifier 300 with humid air that meets the preset flow rate, pressure, temperature and humidity. The dry air generating unit is connected to the air inlet of the target humidifier 300 through the first pipeline 200, so as to provide the target humidifier 300 with dry air that meets the preset flow rate, pressure and temperature. The first sensor assembly is arranged in the first pipeline 200, and is used at least to obtain the pressure, temperature and humidity data of the air entering the target humidifier 300. The second pipeline 500 is connected to the exhaust port of the target humidifier 300, and a back pressure valve 504 is provided on the second pipeline 500. The second sensor assembly is provided in the second pipeline 500, and is located between the back pressure valve 504 and the exhaust port, and is used to obtain at least the pressure, temperature and humidity data of the air flowing out of the target humidifier 300. The host computer is used to set the parameters of the fuel cell simulator 400 and the output pressure parameters of the back pressure valve 504 according to the test conditions, draw the flow resistance curve of the fuel cell air humidifier according to the difference between the real-time pressure of the air entering and flowing out of the target humidifier 300, and draw the humidification characteristic curve of the fuel cell air humidifier according to the difference between the real-time humidity of the air entering and flowing out of the target humidifier 300.

[0099] The fuel cell air humidifier performance test device proposed in the present invention can be applied to the performance test of fuel cell air humidifiers of different power types, with wide coverage, high test efficiency and reliability.

[0100] like Figure 2As shown, the humid air generating unit may include: a water tank 101, a humidifying 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 humidifying tank 102 is connected to the water tank 101 through a third pipeline 103. The humidifying tank 102 is provided with a heating component 104 and a cooling component 105 to adjust the temperature of the deionized water in the humidifying tank 102. The heating component 104 and the cooling component 105 can be made of existing technology and will not be described here. The fourth pipeline 106 is connected to the air inlet of the humidifying tank 102. The fourth pipeline 106 is provided with a first pressure reducing valve 107 and a first solenoid valve 108 to deliver air of a preset pressure to the humidifying tank 102. One end of the fifth pipeline 112 is connected to the exhaust port of the humidifying tank 102, and the other end is connected to the first pipeline 200. Each fifth pipeline 112 is provided with a set of solenoid valves, mass flow controllers and heating and heat preservation belts of preset specifications to control the flow, pressure and temperature of the humidified air flowing from the humidification tank 102 into the target humidifier 300. This can be used to perform performance tests on target humidifiers 300 of different power specifications. Of course, those skilled in the art should understand that a water pump can also be provided on the third pipeline 103 as needed to supply water to the humidification tank 102.

[0101] like Figure 3 As shown, the dry air generating unit may include: a sixth pipeline 600, one end of which is connected to the external air, and the other end is connected to the first ends of a plurality of seventh pipelines 700. The sixth pipeline 600 is provided with a second pressure reducing valve 601 and a second solenoid valve 602, which are used to deliver air of a preset pressure to the seventh pipeline 700. The second end of each of the seventh pipelines 700 is connected to the first pipeline 200. Each of the seventh pipelines 700 is provided with a set of solenoid valves, mass flow controllers and heating and insulation belts of preset specifications, which are used to control the flow, pressure and temperature of the dry air flowing from the sixth pipeline 600 into the target humidifier 300. This can be used to perform performance tests on target humidifiers 300 of different power specifications.

[0102] Further, the first sensor assembly may include a first pressure sensor 201, a first temperature sensor 202 and a first humidity sensor 203. Thus, the pressure, temperature and humidity data of the air entering the target humidifier 300 can be obtained. The second sensor assembly may include a second pressure sensor 501, a second temperature sensor 502 and a second humidity sensor 503. Thus, the pressure, temperature and humidity data of the air flowing out of the target humidifier 300 can be obtained.

[0103] like Figure 1As shown, the fuel cell air humidifier performance test device may further include a plurality of eighth pipelines 800, one end of the eighth pipeline 800 is connected to the first pipeline, and the other end is connected to the outside; the eighth pipeline 800 is provided with a control valve to adjust the pressure of the gas in the first pipeline. Specifically, one of the eighth pipelines is provided with a safety valve, one of the eighth pipelines 800 may be provided with a solenoid valve, and one of the eighth pipelines 800 may be provided with a throttle valve. The pressure of the gas in the first pipeline 200 may be adjusted by controlling the opening or closing of the safety valve, the solenoid valve, and the throttle valve to reduce safety hazards.

[0104] Furthermore, the fuel cell air humidifier performance test device may further include a ninth tube 900, one end of which is fed with test gas, and the other end of which is connected to the first pipeline 200. The ninth tube 900 is provided with a third pressure reducing valve 901 and a third solenoid valve 902. Thus, the target humidifier 300 can be tested for air tightness.

[0105] In addition, the fuel cell air humidifier performance test device of the present invention may also include a waste heat recovery component, which includes a heat exchanger 506 and a tenth pipeline 505, and the 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 the water inlet of the heat exchanger 506. In this way, the heat of the gas flowing through the second pipeline 500 can be recovered, promoting the recycling of resources.

[0106] In addition, the fuel cell air humidifier performance test device of the present invention may further include a steam-water separator 507, and the steam-water separator 507 is connected to the exhaust port of the heat exchanger 506. Thus, the water in the gas flowing through the second pipeline 500 can be recovered, promoting the recycling of resources. The heat exchanger 506 may be a plate heat exchanger 506.

[0107] In summary, the fuel cell air humidifier performance test device proposed in the present invention can be applied to the performance test of fuel cell air humidifiers of different power types, with wide coverage, high test efficiency and reliability.

[0108] Example 2

[0109] Figure 4 FIG. 1 is a flow chart of a method for testing the air tightness of a fuel cell air humidifier in one embodiment of the present invention. Figure 4 According to another aspect of the present invention, a method for testing the air tightness of a fuel cell air humidifier is provided, which uses the fuel cell air humidifier performance testing device as described above, and comprises the following steps:

[0110] S110 , adjusting the output pressure of the third pressure reducing valve 901 according to the target pressure range of the humidifier 300 .

[0111] S120 , controlling the third solenoid valve 902 to open so that the test gas flows into the target humidifier 300 .

[0112] S130, obtaining 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, and the first pressure data is stabilized.

[0113] S140, obtaining 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 can be set as needed, for example, 5 minutes.

[0114] S150: Compare the difference between the first pressure data and the second pressure data.

[0115] S160, if the difference is equal to 0, the target humidifier 300 has no leakage and the air tightness test passes.

[0116] S170, if the difference is not equal to 0, the target humidifier 300 has a leak and the air tightness test fails.

[0117] The fuel cell air humidifier air tightness testing method proposed by the present invention can simplify and standardize the test steps of the fuel cell air humidifier air tightness and improve the test efficiency.

[0118] Example 3

[0119] Figure 5 FIG. 1 is a flow chart of a method for testing the performance of a fuel cell air humidifier in one embodiment of the present invention. Figure 5 According to another aspect of the present invention, a fuel cell air humidifier performance test method is provided, which uses the fuel cell air humidifier performance test device as described in Example 1, and includes the following steps:

[0120] S210, setting the test working condition of the target humidifier 300, using humid air as the test medium.

[0121] S220, according to the test conditions, setting the fuel cell simulator 400 parameters, the intake pressure parameters of the wet air generating unit, and the output pressure parameters of the back pressure valve 504.

[0122] S230 , according to the power of the target humidifier 300 , the humid air generating unit provides the target humidifier 300 with humid air that meets the preset flow rate, pressure, temperature and humidity.

[0123] For example, if it is a low-power air humidifier of 0-10kW, 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. According to the test condition, the first unit heat preservation and heating belt on the fifth pipeline 112 is adjusted to maintain the gas temperature requirement of the target fuel cell humidifier, and the first unit mass flow controller 110 on the fifth pipeline 112 is adjusted to meet the test condition requirement, so that the gas that meets the conditions enters the target fuel cell air humidifier. If it is a medium-power air humidifier of 10-100kW, the first solenoid valve 108, the second solenoid valve 602 and the first unit solenoid valve 109 in another fifth pipeline 112 are opened by the host computer. According to the test condition, the first unit heat preservation and heating belt on the other fifth pipeline 112 is adjusted to maintain the gas temperature requirement of the target fuel cell humidifier, and the first unit mass flow controller 110 on the other fifth pipeline 112 is adjusted to meet the test condition requirement, so that the gas that meets the conditions enters the target fuel cell air humidifier. If it is a high-power air humidifier above 100kW, the first solenoid valve 108, the second solenoid valve 602 and the first unit solenoid valve 109 in the fifth pipeline 112 are opened through the host computer, and the first unit thermal insulation heating belt on the fifth pipeline 112 is adjusted according to the test conditions to maintain the gas temperature requirement of the target fuel cell humidifier, and the first unit mass flow controller 110 on the fifth pipeline 112 is adjusted to meet the test condition requirements, so that the gas that meets the conditions enters the target fuel cell air humidifier.

[0124] S240, obtaining real-time pressure data of the gas in the first pipeline 200 and the second pipeline 500.

[0125] S250, plotting 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 second pipeline 500, and completing the wet air flow resistance test of the target air humidifier.

[0126] S260, acquiring real-time humidity data of the gas in the first pipeline 200 and the second pipeline 500.

[0127] S270, a humidification characteristic curve of the target air humidifier is drawn according to the difference between the real-time humidity data of the gas in the first pipeline 200 and the second pipeline 500, and the wet air humidification capacity test of the target air humidifier is completed.

[0128] The fuel cell air humidifier performance test method proposed in the present invention can simplify and standardize the test steps of the fuel cell air humidifier and improve the test efficiency.

[0129] Example 4

[0130] Figure 6FIG. 1 is a flow chart of a method for testing the performance of a fuel cell air humidifier in another embodiment of the present invention. Figure 6 As shown, the invention also provides another fuel cell air humidifier performance test method, which uses the fuel cell air humidifier performance test device as described in Example 1, and includes the following steps:

[0131] S310, setting the test working condition of the target humidifier 300, using dry air as the test medium.

[0132] S320, according to the test conditions, setting the fuel cell simulator 400 parameters, the intake pressure parameters of the dry air generating unit, and the output pressure parameters of the back pressure valve 504.

[0133] S330 , according to the power of the target humidifier 300 , the dry air generating unit provides the target humidifier 300 with dry air that meets the preset flow rate, pressure and temperature.

[0134] For example, if it is a low-power air humidifier of 0-10kW, 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 host computer. According to the test condition, the second unit heat preservation and heating belt on the seventh pipeline 700 is adjusted to maintain the gas temperature requirement of the target fuel cell humidifier, and the second unit mass flow controller 702 on the seventh pipeline 700 is adjusted to meet the test condition requirement, so that the gas that meets the conditions enters the target fuel cell air humidifier. If it is a medium-power air humidifier of 10-100kW, the first solenoid valve 108, the second solenoid valve 602 and the second unit solenoid valve 701 in another seventh pipeline 700 are opened by the host computer. According to the test condition, the second unit heat preservation and heating belt on the other seventh pipeline 700 is adjusted to maintain the gas temperature requirement of the target fuel cell humidifier, and the second unit mass flow controller 702 on the other seventh pipeline 700 is adjusted to meet the test condition requirement, so that the gas that meets the conditions enters the target fuel cell air humidifier. If it is a high-power air humidifier above 100kW, the first solenoid valve 108, the second solenoid valve 602 and the second unit solenoid valve 701 in the seventh pipeline 700 are opened through the host computer, and the second unit thermal insulation heating belt on the seventh pipeline 700 is adjusted according to the test conditions to maintain the gas temperature requirement of the target fuel cell humidifier, and the second unit mass flow controller 702 on the seventh pipeline 700 is adjusted to meet the test condition requirements, so that the gas that meets the conditions enters the target fuel cell air humidifier.

[0135] S340, obtaining real-time pressure data of the gas in the first pipeline 200 and the second pipeline 500.

[0136] S350, a flow resistance curve of the target air humidifier is drawn according to the difference between the real-time pressure data of the gas in the first pipeline 200 and the second pipeline 500, and a dry air flow resistance test of the target air humidifier is completed.

[0137] S360, obtaining real-time humidity data of the gas in the first pipeline 200 and the second pipeline 500.

[0138] S370, a humidification characteristic curve of the target air humidifier is drawn according to the difference between the real-time humidity data of the gas in the first pipeline 200 and the second pipeline 500, and the dry air humidification capacity test of the target air humidifier is completed.

[0139] The fuel cell air humidifier performance test method proposed in the present invention can simplify and standardize the test steps of the fuel cell air humidifier and improve the test efficiency.

[0140] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel cell air humidifier performance test device, characterized in that: include: a fuel cell simulator, connected to a target humidifier; A humid air generating unit, connected to the air inlet of the target humidifier through a first pipeline, for providing humid air meeting a preset flow rate, pressure, temperature and humidity to the target humidifier; a dry air generating unit, connected to the air inlet of the target humidifier through the first pipeline, for providing dry air meeting a preset flow rate, pressure and temperature to the target humidifier; A first sensor assembly, disposed in the first pipeline, for obtaining at least pressure, temperature and humidity data of air entering the target humidifier; a second pipeline connected to the exhaust port of the target humidifier, the second pipeline being provided with a back pressure valve; a second sensor assembly, disposed in the second pipeline and located between the back pressure valve and the exhaust port, for obtaining at least pressure, temperature and humidity data of the air flowing out of the target humidifier; as well as A host computer, for setting the parameters of the fuel cell simulator and the output pressure parameters of the back pressure valve according to the test conditions, drawing a flow resistance curve of the fuel cell air humidifier according to the difference between the real-time pressures of the 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 between the real-time humidity of the air entering and flowing out of the target humidifier; The humid air generating unit comprises: A water tank storing deionized water; A humidifying tank connected to the water tank through a third pipeline; the humidifying tank is provided with a heating component and a cooling component for adjusting the temperature of the deionized water in the humidifying tank; and a fourth pipeline connected to the air inlet of the humidification tank; a first pressure reducing valve and a first solenoid valve are provided on the fourth pipeline to deliver air of a preset pressure to the humidification tank; and A plurality of fifth pipelines, one end of which is connected to the exhaust port of the humidification tank and the other end of which is connected to the first pipeline; each fifth pipeline is provided with a set of preset specification solenoid valves, mass flow controllers and heating and insulation belts to control the flow, pressure and temperature of the humid air flowing from the humidification tank into the target humidifier; the dry air generating unit comprises: a sixth pipeline, one end of which is connected to the outside air and the other end is connected to the first end of a plurality of seventh pipelines; a second pressure reducing valve and a second solenoid valve are provided on the sixth pipeline to deliver air of preset pressure to the seventh pipeline; the second end of each of the seventh pipelines is connected to the first pipeline; each seventh pipeline is provided with a set of preset specification solenoid valves, mass flow controllers and heating and insulation belts to control the flow, pressure and temperature of the dry air flowing from the sixth pipeline into the target humidifier.

2. The fuel cell air humidifier performance test device according to claim 1, characterized in that: The first sensor assembly includes a first pressure sensor, a first temperature sensor and a first humidity sensor.

3. The fuel cell air humidifier performance test device according to claim 1, characterized in that: The second sensor assembly includes a second pressure sensor, a second temperature sensor and a second humidity sensor.

4. The fuel cell air humidifier performance test device according to claim 1, characterized in that: It also includes a plurality of eighth pipelines, one end of each of which is connected to the first pipeline and the other end of which is connected to the outside. A control valve is provided on each of the eighth pipelines to adjust the pressure of the gas in the first pipeline.

5. The fuel cell air humidifier performance test device according to claim 1, characterized in that: It also includes a ninth pipeline, one end of which is fed with test gas, and the other end of which is connected to the first pipeline; a third pressure reducing valve and a third solenoid valve are arranged on the ninth pipeline.

6. A method for testing the air tightness of a fuel cell air humidifier, characterized in that: The fuel cell air humidifier performance test device as claimed in claim 5 comprises the following steps: 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 so that the test gas flows into the target humidifier; Acquire first pressure data of the test gas flowing out of the target humidifier after the third solenoid valve is opened for a first time; Acquire second pressure data of the test gas flowing out of the target humidifier after the third solenoid valve is opened for a second time; comparing a difference between the first pressure data and the second pressure data; If the difference is equal to 0, the target humidifier has no leakage and the air tightness test passes; otherwise, the target humidifier has a leakage and the air tightness test fails.

7. A fuel cell air humidifier performance test method, characterized in that: The fuel cell air humidifier performance test device according to any one of claims 1 to 5 comprises the following steps: Set the test conditions of the target humidifier, using humid air as the test medium; According to the test conditions, setting fuel cell simulator parameters, intake pressure parameters of the humid air generating unit, and back pressure valve output pressure parameters; According to the power of the target humidifier, the humid air generating unit provides the target humidifier with humid air that meets the preset flow rate, pressure, temperature and humidity; Obtaining real-time pressure data of the gas in the first pipeline and the second pipeline; A flow resistance curve of the target air humidifier is drawn according to the difference between the real-time pressure data of the gas in the first pipeline and the second pipeline, and a wet air flow resistance test of the target air humidifier is completed; Acquire real-time humidity data of the gas in the first pipeline and the second pipeline; A humidification characteristic curve of the target air humidifier is drawn according to the difference between the real-time humidity data of the gas in the first pipeline and the second pipeline, and the wet air humidification capacity test of the target air humidifier is completed.

8. A fuel cell air humidifier performance test method, characterized in that: The fuel cell air humidifier performance test device according to any one of claims 1 to 5 comprises the following steps: Set the test conditions of the target humidifier, using dry air as the test medium; According to the test conditions, setting fuel cell simulator parameters, intake pressure parameters of the dry air generating unit, and back pressure valve output pressure parameters; According to the power of the target humidifier, the dry air generating unit provides the target humidifier with dry air that meets the preset flow rate, pressure and temperature; Obtaining real-time pressure data of the gas in the first pipeline and the second pipeline; A flow resistance curve of the target air humidifier is drawn according to the difference between the real-time pressure data of the gas in the first pipeline and the second pipeline, and a dry air flow resistance test of the target air humidifier is completed; Acquire real-time humidity data of the gas in the first pipeline and the second pipeline; A humidification characteristic curve of the target air humidifier is drawn according to the difference between the real-time humidity data of the gas in the first pipeline and the second pipeline, and the dry air humidification capacity test of the target air humidifier is completed.

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