Air compressor calibration system and method

Abstract

The invention relates to an air compressor calibration system and method, and the system comprises a to-be-calibrated air compressor in a dry gas generation assembly for providing dry gas, a compressed air generation assembly for generating compressed air, a wet gas generation assembly for carrying out the humidification and heating operation on the compressed air based on the humidification and heating requirements, and a calibration assembly for calibrating the to-be-calibrated air compressor in the dry gas generation assembly, the humidifying assembly is connected with the cathode side of the engine of the fuel cell system, and when wet gas enters the outside of a membrane tube of the humidifying assembly, water permeates into the membrane tube of the humidifying assembly through the membrane tube, so that dry gas is humidified after passing through the inside of the membrane tube and enters the cathode side of the engine of the fuel cell system. Therefore, through the system, different calibration strategies can be adopted based on different calibration requirements, a dry and wet gas mixing structure is realized, and the problems of insufficient engine power output of a fuel cell system, even casualties and the like caused by reduction of membrane electrode performance due to large difference of calibration results of an air compressor in actual application are solved; and the performance and the service life of the air compressor are effectively verified.

Description

Technical Field

[0001] This application relates to the technical field of fuel cells, and particularly relates to an air compressor calibration system and method. Background Art

[0002] As the engine power of the fuel cell system continues to increase, the demand for the cathode air flow and pressure of the fuel cell increases, which has a very large impact on the performance and life of the air compressor. In order to verify the performance and service life of the air compressor, air compressor calibration test equipment is essential. In actual application scenarios, the gas generated by the air compressor needs to pass through irregular pipelines to reach a certain temperature and then be humidified before being supplied to the cathode side of the fuel cell system engine.

[0003] Currently, equipment for simulating the usage scenarios of air compressors for fuel cell system engines is relatively rare on the market. In related technologies, the air compressor calibration scenarios are mainly carried out under no-load, constant speed, and dry gas conditions. However, there are significant differences in the calibration results in actual applications, which can lead to a decline in the performance of the membrane electrode, resulting in insufficient power output of the fuel cell system engine. In severe cases, it may cause too high a hydrogen content in the tail gas, leading to an explosion and causing casualties to personnel, which urgently needs to be solved. Summary of the Invention

[0004] This application provides an air compressor calibration system and method to solve the problems in related technologies, such as large differences in the air compressor calibration results in actual applications, leading to a decline in the performance of the membrane electrode and insufficient power output of the fuel cell system engine, and even causing casualties. By calibrating the air compressor under simulated usage scenarios, the control accuracy of air compressor calibration is greatly improved, making it achieve the expected effect and effectively verifying the performance and service life of the air compressor.

[0005] The first aspect of the embodiments of this application provides an air compressor calibration system, including:

[0006] A dry gas generation component, where the dry gas generation component includes an air compressor to be calibrated, and the air compressor to be calibrated is used to provide dry gas;

[0007] A compressed air generation component for generating compressed air;

[0008] A wet gas generation component, where the input end of the wet gas generation component is connected to the compressed air generation component, and the wet gas generation component performs humidification and temperature increase operations on the compressed air based on the humidification and heating requirements to obtain wet gas; and

[0009] A humidifying component, wherein a first input end of the humidifying component is connected to an output end of the dry gas generating component, a second input end of the humidifying component is connected to an output end of the wet gas generating component, and an output end of the humidifying component is connected to a cathode side of a fuel cell system engine, so that when the wet gas enters the outside of the membrane tube of the humidifying component, the membrane tube penetrates water into the inside of the membrane tube of the humidifying component, so that the dry gas is humidified after passing through the inside of the membrane tube and enters the cathode side of the fuel cell system engine.

[0010] Optionally, in some embodiments, the dry gas generating component further includes:

[0011] An anti-surge unit, an input end of the anti-surge unit is connected to a gas output end of the air compressor to be calibrated, and the anti-surge unit is used to prevent the air compressor to be calibrated from surging;

[0012] A heat exchange unit, the heat exchange unit is connected to an output end of the anti-surge unit, and the heat exchange unit adjusts the dry gas to a target temperature based on the current temperature requirement.

[0013] Optionally, in some embodiments, the heat exchange unit includes:

[0014] A heat exchanger, an input end of the heat exchanger is connected to an output end of the anti-surge unit, the heat exchanger adjusts the dry gas to the target temperature based on the current temperature requirement, and a first output end of the heat exchanger is connected to the humidifying component;

[0015] An auxiliary radiator, an input end of the auxiliary radiator is respectively connected to a second output end of the heat exchanger and a coolant output end of the air compressor to be calibrated, and the auxiliary radiator is used to provide coolant;

[0016] A refrigerator, an input end of the refrigerator is connected to the auxiliary radiator, and the refrigerant is used to cool the coolant;

[0017] A first variable-frequency water pump, an input end of the first variable-frequency water pump is connected to an output end of the refrigerator, a first output end of the first variable-frequency water pump is connected to the air compressor to be calibrated, a second output end of the first variable-frequency water pump is connected to the heat exchanger, and the first variable-frequency water pump is used to provide the cooled coolant to the air compressor to be calibrated and the heat exchanger.

[0018] Optionally, in some embodiments, the dry gas generating component further includes:

[0019] A first proportional valve, one end of the first proportional valve is connected to a coolant output end of the air compressor to be calibrated, and the other end of the first proportional valve is connected to an input end of the auxiliary radiator;

[0020] A second proportional valve, one end of the second proportional valve is connected to the second output end of the heat exchanger, and the other end of the second proportional valve is connected to the input end of the auxiliary radiator tank.

[0021] Optionally, in some embodiments, the wet gas generation assembly includes:

[0022] A humidifying unit, a first input end of the humidifying unit is connected to an output end of the compressed air generation assembly, a first output end of the humidifying unit is connected to the humidifying component, and the humidifying unit performs a humidifying and temperature-raising operation on the compressed air based on the humidifying and heating requirements to obtain wet gas;

[0023] A temperature control unit, an input end of the temperature control unit, the humidifying unit, and an output end of the temperature control unit are connected in sequence.

[0024] Optionally, in some embodiments, the temperature control unit includes:

[0025] A main radiator tank, an input end of the main radiator tank is connected to a second output end of the humidifying unit;

[0026] A thermostat, a first input end of the thermostat is connected to an output end of the main radiator tank, and a second input end of the thermostat is connected to a second output end of the humidifying unit;

[0027] A second variable frequency water pump, an input end of the second variable frequency water pump is connected to an output end of the thermostat, and an output end of the second variable frequency water pump is connected to a second input end of the humidifying unit.

[0028] Optionally, in some embodiments, the wet gas generation assembly further includes:

[0029] A pressure regulating valve disposed between the compressed air generation assembly and the humidifying unit, and the pressure regulating valve is used to reduce the pressure of the compressed air to a preset pressure;

[0030] A back pressure valve, one end of the back pressure valve is connected to a first output end of the humidifying unit, and the back pressure valve adjusts the flow rate and pressure of the wet gas based on the current flow rate demand and the current pressure demand;

[0031] A first flow meter, one end of the first flow meter is connected to the other end of the back pressure valve, and the other end of the first flow meter is connected to the humidifying component, and the first flow meter monitors the real-time flow rate of the wet gas.

[0032] Optionally, in some embodiments, the air compressor calibration system further includes a three-way valve disposed between the humidification component and the heat exchanger. The input end of the three-way valve is connected to the gas output end of the heat exchanger. The first output end of the three-way valve is connected to the first input end of the humidification component. The second output end of the three-way valve is connected to the cathode side of the fuel cell system engine.

[0033] Optionally, in some embodiments, the humidification component is a humidifier.

[0034] An embodiment of the second aspect of the present application provides an air compressor calibration method, which uses the air compressor calibration system described in any one of the above embodiments. The method includes the following steps:

[0035] Obtain the calibration requirements of the air compressor to be calibrated;

[0036] If the calibration requirement is a dry gas calibration requirement, close the humidification unit, turn on the auxiliary radiator, control the air compressor to be calibrated to turn on to provide dry gas, and when the temperature of the dry gas reaches the first set temperature, enter the cathode side of the fuel cell system engine through the humidification component; and

[0037] If the calibration requirement is a wet gas calibration requirement, turn on the main radiator, the auxiliary radiator and the humidification unit, turn on the air compressor to be calibrated to provide the dry gas, and when the temperature of the air compressor to be calibrated reaches the second preset temperature and the temperature of the dry gas reaches the third set temperature, the dry gas passes through the inside of the membrane tube and is humidified and enters the cathode side of the fuel cell system engine. When the humidification unit inputs wet gas to the outside of the membrane tube of the humidification component, the membrane tube penetrates water into the inside of the membrane tube of the humidification component.

[0038] According to the air compressor calibration system proposed in the embodiments of the present application, the present application can provide dry gas through the air compressor to be calibrated in the dry gas generation component, generate compressed air by the compressed air generation component, perform humidification and temperature increase operations on the compressed air based on the humidification and heating requirements through the wet gas generation component to obtain wet gas. Furthermore, when the wet gas enters the outside of the membrane tube of the humidification component, the membrane tube penetrates water into the inside of the membrane tube of the humidification component, so that the dry gas is humidified and enters the cathode side of the fuel cell system engine after passing through the inside of the membrane tube. Therefore, the problem in the related art that the accuracy of humidity control cannot be guaranteed due to humidifying dry air with water is solved, and the accuracy of verifying the performance of the air compressor is improved. Thus, the present application can adopt the air compressor calibration system to obtain the calibration requirements of the air compressor to be calibrated. When the calibration requirement is dry gas, after controlling the temperature of the dry gas to reach the preset standard, it is sent to the cathode side of the fuel cell system engine through the humidification component; when the calibration requirement is wet gas, after controlling the temperature of the dry gas to reach the preset standard, it is input into the humidification component and is humidified and enters the cathode side of the fuel cell system engine after passing through the inside of the membrane tube of the humidification component. Thus, the present application solves the problems in the related art that due to the large difference in the air compressor calibration results in actual applications, the performance of the membrane electrode decreases, resulting in insufficient power output of the fuel cell system engine and even causing casualties. The air compressor is calibrated under simulated usage scenarios, effectively verifying the performance and service life of the air compressor.

[0039] Some of the additional aspects and advantages of the present application will be given in the following description, some will become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0041] Figure 1 is a schematic diagram of the air compressor calibration system provided according to the embodiments of the present application;

[0042] Figure 2 is a schematic diagram of the air compressor calibration system according to a specific embodiment of the present application;

[0043] Figure 3 is a schematic diagram of the principle of the air compressor calibration system according to a specific embodiment of the present application;

[0044] Figure 4 is a flowchart of the air compressor calibration method provided according to the embodiments of the present application;

[0045] Figure 5 is a flowchart of the air compressor calibration method according to a specific embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] Embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application.

[0047] The air compressor calibration system and method according to embodiments of the present application will be described below with reference to the accompanying drawings. In view of the problem mentioned in the above background art that due to the large difference in the air compressor calibration results in actual applications, the performance of the membrane electrode decreases, resulting in insufficient power output of the fuel cell system engine, and even causing casualties, the present application provides an air compressor calibration system. In this system, the dry gas generation component includes the air compressor to be calibrated, and the air compressor to be calibrated is used to provide dry gas; a compressed air generation component for generating compressed air; the input end of the wet gas generation component is connected to the compressed air generation component, and the wet gas generation component performs humidification and temperature increase operations on the compressed air based on the humidification and heating requirements to obtain wet gas; the first input end of the humidifying component is connected to the output end of the dry gas generation component, the second input end of the humidifying component is connected to the output end of the wet gas generation component, and the output end of the humidifying component is connected to the cathode side of the fuel cell system engine, so that when the wet gas enters the outside of the membrane tube of the humidifying component, the membrane tube penetrates water into the inside of the membrane tube of the humidifying component, so that the dry gas is humidified and enters the cathode side of the fuel cell system engine after passing through the inside of the membrane tube. Thus, the problems in the related art, such as the large difference in the air compressor calibration results in actual applications, the decrease in the performance of the membrane electrode, resulting in insufficient power output of the fuel cell system engine, and even causing casualties, are solved. The air compressor is calibrated under a simulated usage scenario, greatly improving the accuracy of the air compressor calibration control, making it achieve the expected effect, and effectively verifying the performance and service life of the air compressor.

[0048] Specifically, Figure 1 is a schematic diagram of the air compressor calibration system provided by the embodiments of the present application.

[0049] As Figure 1 shown, the air compressor calibration system 10 includes: a dry gas generation component 100, a compressed air generation component 200, a wet gas generation component 300, and a humidifying component 400.

[0050] Specifically, the dry gas generation component 100 includes a compressor to be calibrated 1, which is used to provide dry gas; a compressed air generation component 200 is used to generate compressed air; the input end of the wet gas generation component 300 is connected to the compressed air generation component 200, and the wet gas generation component 300 performs humidification and temperature increase operations on the compressed air based on the humidification and heating requirements to obtain wet gas; the first input end of the humidification component 400 is connected to the output end of the dry gas generation component 100, the second input end of the humidification component 400 is connected to the output end of the wet gas generation component 300, and the output end of the humidification component 400 is connected to the cathode side of the fuel cell system engine, so that when the wet gas enters the outside of the membrane tube of the humidification component 400, the membrane tube permeates water into the inside of the membrane tube of the humidification component 400, so that the dry gas is humidified after passing through the inside of the membrane tube and enters the cathode side of the fuel cell system engine.

[0051] It can be understood that the dry gas generated by the compressor to be calibrated 1 in the embodiment of the present application needs to pass through a pipeline to reach a certain temperature and be humidified before it can be provided to the cathode of the fuel cell system engine. Therefore, the compressor calibration system 10 of the present application is provided with a wet gas generation component 300, which can perform humidification and temperature increase operations on the compressed air based on the operating requirements of the fuel cell system to obtain wet gas. Furthermore, after the generated wet gas enters the humidification component 400, it humidifies the dry gas generated by the compressor to be calibrated 1 and transports it to the fuel cell system to ensure the output power of the engine.

[0052] Optionally, in some embodiments, the humidification component 400 is a humidifier.

[0053] Specifically, the humidification component 400 in the embodiment of the present application is a humidifier, and the inside of the humidifier is composed of permeable membrane tubes. In the actual implementation process, the gaseous water or liquid water of the fuel cell system engine enters the humidifier, and the water permeates from the outer wall of the membrane tube to the inside. The gas generated by the compressor to be calibrated 1 passes through the inside of the membrane tube to achieve a humidification effect, thereby generating resistance to the gas.

[0054] Therefore, the compressor calibration system 10 of the present application can be applied to the test of the compressor to verify the performance and service life of the compressor. In addition, the system can achieve a dry-wet mixing structure, which is suitable for different test requirements, so that the result of the compressor calibration meets the standards of actual application, improves the performance of the membrane electrode, and thus ensures the output power of the fuel cell system engine.

[0055] Those skilled in the art can understand that during the process of the dry gas generated by the compressor flowing through the compressor calibration system 10, it is necessary to control not only its temperature and humidity, but also the gas pressure and flow rate to improve the stability of the test scenario of the compressor, and thus ensure the calibration result of the compressor and improve the accuracy of the compressor test.

[0056] This application proposes an air compressor calibration system as shown in Figure 2 the following. Embodiments will be listed below to specifically introduce the specific composition and operating principle of the air compressor calibration system of the embodiments of this application with reference to the accompanying drawings.

[0057] Optionally, in some embodiments, as shown in Figure 2 the dry gas generation assembly 100 further includes an anti-surge unit 101 and a heat exchange unit 102 (not marked in the figure).

[0058] Among them, the input end of the anti-surge unit 101 is connected to the gas output end of the air compressor 1 to be calibrated, and the anti-surge unit 101 is used to prevent the air compressor 1 to be calibrated from surging; the heat exchange unit 102 is connected to the output end of the anti-surge unit 101, and the heat exchange unit 102 adjusts the dry gas to the target temperature based on the current temperature requirement.

[0059] It should be noted that the anti-surge unit 101 of the embodiments of this application can be an anti-surge valve, which can effectively prevent the air compressor from surging during operation.

[0060] Optionally, in some embodiments, as shown in Figure 2 the heat exchange unit 102 includes a heat exchanger 8, an auxiliary radiator water tank 28, a refrigerator 29, and a first variable frequency water pump 30.

[0061] Among them, the input end of the heat exchanger 8 is connected to the output end of the anti-surge unit 101. The heat exchanger 8 adjusts the dry gas to the target temperature based on the current temperature requirement, and the first output end of the heat exchanger 8 is connected to the humidifying assembly 400; the input end of the auxiliary radiator water tank 28 is respectively connected to the second output end of the heat exchanger 8 and the coolant output end of the air compressor 1 to be calibrated, and the auxiliary radiator water tank 28 is used to provide coolant; the input end of the refrigerator 29 is connected to the auxiliary radiator water tank 28, and the refrigerant is used to cool the coolant; the input end of the first variable frequency water pump 30 is connected to the output end of the refrigerator 29, the first output end of the first variable frequency water pump 30 is connected to the air compressor 1 to be calibrated, and the second output end of the first variable frequency water pump 30 is connected to the heat exchanger 8. The first variable frequency water pump 30 is used to provide the cooled coolant to the air compressor 1 to be calibrated and the heat exchanger 8.

[0062] Specifically, as shown in Figure 2As shown in the figure, the air compressor calibration system 10 of the embodiment of the present application can realize the gas heat exchange function. After the air compressor 1 to be calibrated runs, dry gas is provided. The anti-surge unit 101 prevents the air compressor 1 to be calibrated from surging. After the air compressor 1 to be calibrated generates dry gas, it is transported through a pipeline to the heat exchanger 8 for cooling. The coolant of the heat exchanger 8 and the air compressor 1 to be calibrated is provided by the auxiliary radiator tank 28. After the coolant is cooled by the refrigerator 29, the first variable-frequency water pump 30 transports the coolant to the heat exchanger 8 to control the temperature of the dry gas and the air compressor 1 to be calibrated.

[0063] Optionally, in some embodiments, as Figure 2 shown, the dry gas generation component 100 further includes: a first proportional valve 33 and a second proportional valve 9.

[0064] Wherein, one end of the first proportional valve 33 is connected to the coolant output end of the air compressor 1 to be calibrated, and the other end of the first proportional valve 33 is connected to the input end of the auxiliary radiator tank 28; one end of the second proportional valve 9 is connected to the second output end of the heat exchanger 8, and the other end of the second proportional valve 9 is connected to the input end of the auxiliary radiator tank 28.

[0065] Specifically, as Figure 2 shown, since the present application needs to control the temperature of the dry gas generated by the air compressor 1 to be calibrated, therefore, during the heat exchange process, the first proportional valve 33 and the second proportional valve 9 are used to adjust the flow rate of the coolant, thereby controlling the temperatures of the air compressor 1 to be calibrated and the heat exchanger 8 to make them reach the temperature value required for the dry gas.

[0066] Based on the above embodiments, for the dry gas generation component 100 in the air compressor calibration system 10 according to the present application, the auxiliary radiator tank 28 provides the coolant, and the first proportional valve 33 and the second proportional valve 9 are used to adjust the flow rate of the coolant to adjust the temperatures of the dry gas and the air compressor 1 to be calibrated, realize gas heat exchange, and make the temperature of the dry gas generated by the air compressor 1 to be calibrated reach the preset standard. Thus, the air compressor test scenario is closer to the actual use scenario, the accuracy of the calibration result is improved, and the output efficiency of the fuel cell system engine is enhanced.

[0067] Optionally, in some embodiments, as Figure 2 shown, the wet gas generation component 300 includes: a humidification unit 301 and a temperature control unit 302 (not marked in the figure).

[0068] Among them, the first input end of the humidifying unit 301 is connected to the output end of the compressed air generating assembly 200, the first output end of the humidifying unit 301 is connected to the humidifying component 400, and the humidifying unit 301 performs humidifying and temperature-raising operations on the compressed air based on the humidifying and heating requirements to obtain wet gas; the input end of the temperature control unit 302, the humidifying unit 301, and the output end of the temperature control unit 302 are connected in sequence.

[0069] It should be noted that the humidifying unit 301 in the embodiment of the present application may be a humidifying tank. After external compressed air enters the humidifying tank, spray humidification and temperature-raising operations are performed to form wet gas.

[0070] Optionally, in some embodiments, such as Figure 2 shown, the temperature control unit 302 includes: a main radiator tank 27, a thermostat 25, and a second variable frequency water pump 26.

[0071] Among them, the input end of the main radiator tank 27 is connected to the second output end of the humidifying unit 301; the first input end of the thermostat 25 is connected to the output end of the main radiator tank 27, and the second input end of the thermostat 25 is connected to the second output end of the humidifying unit 301; the input end of the second variable frequency water pump 26 is connected to the output end of the thermostat 25, and the output end of the second variable frequency water pump 26 is connected to the second input end of the humidifying unit 301.

[0072] Specifically, as Figure 2 shown, the main radiator tank 27 in the embodiment of the present application can provide coolant. The thermostat 25 is used to control the coolant flow path and can automatically adjust the amount of water entering the humidifying unit 301 according to the temperature of the coolant. The second variable frequency water pump 26 is used to transport the coolant to the humidifying unit 301 to achieve control of the temperature of the wet gas.

[0073] Optionally, in some embodiments, such as Figure 2 shown, the wet gas generating assembly 300 further includes: a pressure regulating valve 24, a back pressure valve 20, and a first flow meter 18.

[0074] Among them, the pressure regulating valve 24 provided between the compressed air generating assembly 200 and the humidifying unit 301 is used to reduce the pressure of the compressed air to a preset pressure; one end of the back pressure valve 20 is connected to the first output end of the humidifying unit 301, and the back pressure valve 20 adjusts the flow rate and pressure of the wet gas based on the current flow rate demand and the current pressure demand; one end of the first flow meter 18 is connected to the other end of the back pressure valve 20, and the other end of the first flow meter 18 is connected to the humidifying component 400. The first flow meter 18 monitors the real-time flow rate of the wet gas.

[0075] It should be noted that the pressure regulating valve 24 in the embodiments of the present application is used to decompress the externally compressed air, so that the gas pressure passing through the compressed air generating assembly 200 reaches the standard range to ensure the stability of the air compressor test environment. In addition, the preset pressure of the compressed air in the embodiments of the present application can be set by those skilled in the art according to actual needs and will not be specifically limited herein.

[0076] Optionally, in some embodiments, as Figure 2 shown, the air compressor calibration system 10 further includes a three-way valve 11 disposed between the humidifying assembly 400 and the heat exchanger 8. The input end of the three-way valve 11 is connected to the gas output end of the heat exchanger 8. The first output end of the three-way valve 11 is connected to the first input end of the humidifying assembly 400, and the second output end of the three-way valve 11 is connected to the cathode side of the fuel cell system engine.

[0077] Thus, the present application can control the flow of gas in the air compressor calibration system 10 through the three-way valve 11, effectively preventing gas backflow and diversion.

[0078] Based on the above embodiments, it can be understood that, as Figure 2 shown, the present application generates compressed air through the compressed air generating assembly 200, controls the pressure of the compressed air by using the pressure regulating valve 24, performs spray humidification operation on the compressed air through the humidifying unit 301 to obtain wet gas, controls the gas temperature by using the coolant based on the main radiator 27, the thermostat 25 and the second variable frequency water pump 26, and adjusts the flow rate and pressure of the humidified and heated gas through the back pressure valve 20.

[0079] Furthermore, as Figure 2 shown, the humidified and heated gas enters the outside of the membrane tube of the humidifying assembly 400 (humidifier). The membrane tube permeates gaseous water or liquid water into the inside of the membrane tube. The dry gas generated by the dry gas generating assembly 100 is humidified after passing through the inside of the membrane tube and finally enters the cathode side of the fuel cell system engine. Therefore, compared with the related art where water is directly used to humidify dry air, the present application can more accurately control the humidity value of dry air through the gaseous water or liquid water permeating into the inside of the membrane tube, thereby improving the accuracy of the control of air compressor calibration, achieving the expected effect, and further improving the accuracy of the air compressor calibration result.

[0080] To enable those skilled in the art to further understand the air compressor calibration system 10 of the present application, the following examples are listed to schematically illustrate the composition and operating principle of the system.

[0081] Specifically, Figure 3 is a schematic diagram of the principle of the air compressor calibration system according to a specific embodiment of the present application, as Figure 3As shown in the figure, the air compressor calibration system of the embodiment of the present application includes: the air compressor to be calibrated 1, the auxiliary radiator 28, the refrigerator 29, the first variable-frequency water pump 30, the heat exchanger 8, the first proportional valve 33, the second proportional valve 9, the humidifier 400, the back pressure valve 20, the humidification tank 301, the pressure regulating valve 24, the second variable-frequency water pump 26, the thermostat 25, the main radiator 27, etc.

[0082] Among them, the air compressor 1 to be calibrated is used to provide dry gas. The auxiliary radiator 28, the refrigerator 29, the first variable-frequency water pump 30, the heat exchanger 8, the first proportional valve 33, the second proportional valve 9, etc. are divided into the dry gas side of the air compressor calibration system 10 and are used to control the dry gas temperature and the air compressor temperature. The humidifier 400, the back pressure valve 20, the humidification tank 301, the pressure regulating valve 24, the second variable-frequency water pump 26, the thermostat 25, the main radiator 27, etc. form the exhaust environment of the fuel cell system engine tail, which is used to humidify the dry gas and send the humidified and heated gas to the cathode side of the fuel cell system engine.

[0083] It should be noted that the humidifier 400 of the embodiment of the present application is internally composed of permeable membrane tubes. The gaseous water and liquid water in the exhaust environment of the fuel cell system engine tail enter the humidifier 400, and the water penetrates from the outer wall of the membrane tube to the inside. The gas generated by the air compressor 1 to be calibrated passes through the inside of the membrane tube to achieve the humidification effect, thereby generating resistance to the gas.

[0084] During the actual execution process, as Figure 3 shown, on the dry gas side, after the air compressor 1 to be calibrated runs, it provides dry gas. At the same time, the anti-surge valve 101 starts to prevent the air compressor 1 to be calibrated from surging. After the air compressor 1 to be calibrated generates gas, it is transported to the heat exchanger 8 through the pipeline for cooling. The coolant of the heat exchanger 8 and the air compressor 1 to be calibrated is provided by the auxiliary radiator 28. After the coolant is cooled by the refrigerator 29, the water cooler 30 provides the coolant to the air compressor 1 to be calibrated and the radiator 8. By adjusting the coolant flow through the first proportional valve 33 and the second proportional valve 9, the temperatures of the air compressor 1 to be calibrated and the radiator 8 are controlled to achieve the temperature required for the dry gas. The dry gas is transported to the dry gas inlet hole of the humidifier 400 after temperature control.

[0085] Further, on the exhaust simulation side of the fuel cell system engine, the external compressed air is decompressed by the pressure regulating valve 24. The decompressed compressed air enters the humidification tank 301 for spray humidification and heating. Its heating operation is provided by the main radiator 27 with coolant, and the coolant flow is adjusted by the thermostat 25. The second variable-frequency water pump 26 is used to send the coolant into the humidification tank 301 to achieve the temperature control of the compressed air. The flow rate and pressure of the humidified and heated gas are set by the back pressure valve 20 and enter the outside of the membrane tube of the humidifier 400. The membrane tube penetrates the water to the inside of the membrane tube. The dry gas is humidified after passing through the inside of the membrane tube and finally enters the cathode side of the fuel cell system engine.

[0086] According to the air compressor calibration system proposed by the embodiments of the present application, dry gas is provided by calibrating the air compressor, external air is compressed by a compressed air generating component, and a humid gas generating component is used to perform humidification and temperature increase operations on the compressed air based on the humidification and heating requirements to obtain humid gas. Furthermore, when the humid gas enters the outside of the membrane tube of the humidification component, the membrane tube penetrates water into the inside of the membrane tube of the humidification component, so that the dry gas is humidified and enters the cathode side of the fuel cell system engine after passing through the inside of the membrane tube.

[0087] Thus, this system can achieve heat exchange of the air compressor calibration test equipment, make the gas temperature reach the standard range, control the gas flow and pressure through valves, and ensure the safety of the test equipment; provide the humidified gas to the cathode side of the fuel cell system engine, solving the problems in the related art that due to the large difference in the air compressor calibration results during actual application, the performance of the membrane electrode decreases, resulting in insufficient power output of the fuel cell system engine and even causing casualties. Calibrating the air compressor under a simulated usage scenario greatly improves the accuracy of the control accuracy of the air compressor calibration, making it reach the expected effect, and effectively verifying the performance and service life of the air compressor.

[0088] Secondly, the air compressor calibration method proposed by the embodiments of the present application is described with reference to the accompanying drawings. This method uses the air compressor calibration system of any one of the above embodiments.

[0089] Figure 4 It is a flowchart of the air compressor calibration method provided by the embodiments of the present application.

[0090] As Figure 4 shown, the air compressor calibration method includes the following steps:

[0091] In step S401, the calibration requirements of the air compressor to be calibrated are obtained.

[0092] Among them, the calibration requirements of the air compressor in the embodiments of the present application are dry gas calibration requirements and humid gas calibration requirements.

[0093] It can be understood that the air compressor calibration system in the embodiments of the present application can realize the mixed structure of dry and humid gases. Therefore, before performing the air compressor calibration test, the embodiments of the present application need to obtain the calibration requirements of the air compressor to be calibrated in order to adopt different calibration strategies according to the calibration requirements.

[0094] In step S402, if the calibration requirement is a dry gas calibration requirement, the humidification unit is closed, the auxiliary radiator is turned on, the air compressor to be calibrated is controlled to start providing dry gas, and when the temperature of the dry gas reaches the first set temperature, it enters the cathode side of the fuel cell system engine through the humidification component.

[0095] Specifically, as Figure 2As shown, when the calibration requirement is for dry gas calibration, that is, the dry gas generated by the air compressor 1 to be calibrated does not require humidification operation, the air compressor calibration system 10 turns off the humidification unit 301 and only needs to turn on the auxiliary radiator 28 to control the temperature of the dry gas. Furthermore, after the temperature of the dry gas reaches the preset standard, it enters the humidification assembly 400 through the three-way valve 11, and the humidification assembly 400 transports the dry gas to the cathode side of the fuel cell system engine.

[0096] In step S403, if the calibration requirement is for wet gas calibration, the main radiator, auxiliary radiator, and humidification unit are turned on, and the air compressor to be calibrated is turned on to provide dry gas. When the temperature of the air compressor to be calibrated reaches the second preset temperature and the temperature of the dry gas reaches the third set temperature, the dry gas passes through the inside of the membrane tube and is humidified and then enters the cathode side of the fuel cell system engine. Among them, when the humidification unit inputs the wet gas to the outside of the membrane tube of the humidification assembly, the membrane tube penetrates water into the inside of the membrane tube of the humidification assembly.

[0097] Specifically, as Figure 2 shown, when the calibration requirement is for wet gas calibration, that is, humidification and temperature increase operations need to be performed on the dry gas provided by the air compressor. At this time, the auxiliary radiator 28 needs to be turned on to provide coolant to the refrigerator 29, and the coolant is transported to the heat exchanger 8 through the first variable frequency water pump 30. At the same time, the air compressor 1 to be calibrated provides dry gas, and the anti-surge valve 101 is used to prevent surge. Thus, the embodiment of the present application can control the flow rate of the cooling water by using the first proportional valve 33 and the second proportional valve 9 to control the temperature of the air compressor 1 to be calibrated and the dry gas. After the temperatures of both reach the preset standard, the dry gas enters the humidification assembly 400 through the three-way valve 11.

[0098] On the other hand, as Figure 2 shown, when the calibration requirement is for wet gas calibration, the main radiator 27 and the humidification unit 301 also need to be turned on. The external air is compressed by the compressed air generation assembly 200, the temperature of the compressed air is controlled by the coolant provided by the main radiator 27, and the compressed air is spray humidified by the humidification unit 301 to obtain wet gas. Furthermore, the back pressure valve 20 is used to adjust the gas after humidification and temperature increase so that when it is input to the outside of the membrane tube of the humidification assembly 400, the membrane tube penetrates water into the inside of the membrane tube of the humidification assembly, so that the dry gas enters the cathode side of the fuel cell system engine after being humidified by the humidification assembly 400.

[0099] It should be noted that the values of the first set temperature, the second preset temperature, and the third preset temperature in the embodiment of the present application can be set by those skilled in the art according to actual needs and are not specifically limited herein.

[0100] To enable those skilled in the art to further understand the air compressor calibration method of the embodiments of the present application, the following examples are listed in combination with the accompanying drawings to schematically illustrate the steps of the air compressor calibration test for the fuel cell system engine of the embodiments of the present application.

[0101] Specifically, Figure 5 is a flowchart of the air compressor calibration method for a specific embodiment of the present application. In the embodiments of the present application, the humidifying component is the humidifier 400, and the humidifying unit is the humidifying tank 301.

[0102] Combined with Figure 3 and Figure 5 as shown, the air compressor calibration method includes the following steps:

[0103] (1) Determine whether the calibration requirement of the air compressor 1 to be calibrated is a dry gas calibration requirement or a wet gas calibration requirement.

[0104] (2) If the calibration requirement is a dry gas calibration requirement, close the humidifying tank 301, open the auxiliary radiator water tank 28, the auxiliary radiator water tank 28 delivers the coolant to the refrigerator 29, the first variable frequency water pump 30 sends the coolant into the heat exchanger 8, control the air compressor 1 to be calibrated to start providing dry gas, and at the same time the anti-surge valve 101 prevents dry gas surge. The dry gas enters the heat exchanger 8, and the flow rate of the coolant is controlled by the first proportional valve 33 and the second proportional valve 9 to control the temperature of the dry gas. Then, determine whether the temperature of the dry gas reaches the set temperature. If it reaches the set temperature, the heated dry gas is delivered to the humidifier 400 through the three-way valve 111, and finally delivered to the cathode side of the fuel cell system engine. If the temperature of the dry gas does not reach the set temperature, continue to control the opening of the proportional valve until the temperature of the dry gas is within the normal temperature range.

[0105] (3) If the calibration requirement is a wet gas calibration requirement, open the main radiator water tank 27, the auxiliary radiator water tank 28 and the humidifying tank 301. The auxiliary radiator water tank 28 delivers the coolant to the refrigerator 29, and the first variable frequency water pump 30 sends the coolant into the heat exchanger 8 and the air compressor 1 to be calibrated. Control the air compressor 1 to be calibrated to start providing dry gas, and at the same time the anti-surge valve 101 prevents dry gas surge. The dry gas enters the heat exchanger 8, and the flow rate of the coolant is controlled by the first proportional valve 33 and the second proportional valve 9 to control the temperature of the dry gas and the temperature of the air compressor 1 to be calibrated. Then, determine whether the temperature of the air compressor 1 to be calibrated reaches the set temperature. If it does not reach the set temperature, continue to control the opening of the proportional valve until its temperature is within the set temperature range. Determine whether the temperature of the dry gas reaches the set temperature. If the temperature of the dry gas reaches the set temperature, the heated dry gas is delivered to the humidifier 400 through the three-way valve 111;

[0106] On the other hand, the pressure regulating valve 24 controls the pressure of the external compressed air and delivers it to the humidifying tank 301. The humidifying tank 301 is used to spray and humidify the compressed air to obtain wet gas. The main radiator 27 provides coolant, and the second variable frequency water pump 26 delivers the coolant to the humidifying tank 301. At the same time, the thermostat 25 is used to control the flow rate of the coolant so that the temperature of the wet gas in the humidifying tank 301 reaches the set temperature. Furthermore, the back pressure valve 20 adjusts the flow rate and pressure of the humidified and heated wet gas and delivers it to the outside of the membrane tube of the humidifier 400. The membrane tube penetrates water into the inside of the membrane tube of the humidifier 400, and the dry gas is humidified after passing through the inside of the membrane tube and enters the cathode side of the fuel cell system engine.

[0107] According to the air compressor calibration method provided by the embodiments of the present application, by obtaining the calibration requirements of the air compressor to be calibrated, when the calibration requirement is a dry gas calibration requirement, the humidifying unit is turned off, the auxiliary radiator is turned on, and the air compressor to be calibrated is controlled to start providing dry air. And when the temperature of the dry air reaches the preset temperature, it enters the cathode side of the fuel cell system engine through the humidifying component; when the calibration requirement is a wet gas calibration requirement, the main radiator, the auxiliary radiator and the humidifying unit are turned on. When the temperature of the air compressor to be calibrated and the dry air both reach the preset temperature, the dry gas is humidified after passing through the inside of the membrane tube and enters the cathode side of the fuel cell system engine.

[0108] Thus, the present application realizes a dry-wet mixing structure for the calibration test of the air compressor for the fuel cell system engine, solves the problems in the related art that due to the large difference in the air compressor calibration results during actual application, the performance of the membrane electrode decreases, resulting in insufficient power output of the fuel cell system engine, and even causing casualties, etc. Calibrating the air compressor under the simulated usage scenario greatly improves the accuracy of the control precision of the air compressor calibration, enables it to achieve the expected effect, and effectively verifies the performance and service life of the air compressor.

[0109] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or N embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0110] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "N" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0111] Any process or method description shown in a flowchart or otherwise described herein may be understood to represent a module, segment, or portion of code including one or N executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present application includes additional implementations, where the functions may be executed in a substantially simultaneous manner or in a reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present application pertain.

[0112] It should be understood that the various parts of the present application may be implemented by hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well known in the art may be used: discrete logic circuits having logic gate circuits for implementing logic functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays, field programmable gate arrays, etc.

[0113] Those of ordinary skill in the art of the present technology can understand that all or part of the steps carried by the methods of the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0114] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. An air compressor calibration system, characterized in that, it includes: A dry gas generation component, the dry gas generation component includes an air compressor to be calibrated, and the air compressor to be calibrated is used to provide dry gas; A compressed air generation component for generating compressed air; A wet gas generation component, the input end of the wet gas generation component is connected to the compressed air generation component, and the wet gas generation component performs humidification and temperature increase operations on the compressed air based on the humidification and heating requirements to obtain wet gas; and A humidification component, the first input end of the humidification component is connected to the output end of the dry gas generation component, the second input end of the humidification component is connected to the output end of the wet gas generation component, and the output end of the humidification component is connected to the cathode side of the fuel cell system engine, so that when the wet gas enters the outside of the membrane tube of the humidification component, the membrane tube penetrates water into the inside of the membrane tube of the humidification component, so that the dry gas is humidified after passing through the inside of the membrane tube and enters the cathode side of the fuel cell system engine.

2. The air compressor calibration system according to claim 1, characterized in that, The dry gas generation component further includes: An anti-surge unit, the input end of the anti-surge unit is connected to the gas output end of the air compressor to be calibrated, and the anti-surge unit is used to prevent the air compressor to be calibrated from surging; A heat exchange unit, the heat exchange unit is connected to the output end of the anti-surge unit, and the heat exchange unit adjusts the dry gas to the target temperature based on the current temperature requirement.

3. The air compressor calibration system according to claim 2, characterized in that, The heat exchange unit includes: A heat exchanger, the input end of the heat exchanger is connected to the output end of the anti-surge unit, the heat exchanger adjusts the dry gas to the target temperature based on the current temperature requirement, and the first output end of the heat exchanger is connected to the humidification component; An auxiliary radiator, the input end of the auxiliary radiator is respectively connected to the second output end of the heat exchanger and the coolant output end of the air compressor to be calibrated, and the auxiliary radiator is used to provide coolant; A refrigerator, the input end of the refrigerator is connected to the auxiliary radiator, and the refrigerant is used to cool the coolant; A first variable frequency water pump, the input end of the first variable frequency water pump is connected to the output end of the refrigerator, the first output end of the first variable frequency water pump is connected to the air compressor to be calibrated, and the second output end of the first variable frequency water pump is connected to the heat exchanger. The first variable frequency water pump is used to provide the cooled coolant to the air compressor to be calibrated and the heat exchanger.

4. The air compressor calibration system according to claim 3, characterized in that, The dry gas generation component further includes: A first proportional valve, one end of the first proportional valve is connected to the coolant output end of the air compressor to be calibrated, and the other end of the first proportional valve is connected to the input end of the auxiliary radiator; A second proportional valve, one end of the second proportional valve is connected to the second output end of the heat exchanger, and the other end of the second proportional valve is connected to the input end of the auxiliary radiator.

5. The air compressor calibration system according to claim 1, characterized in that, The wet gas generating assembly includes: A humidifying unit, the first input end of the humidifying unit is connected to the output end of the compressed air generating assembly, the first output end of the humidifying unit is connected to the humidifying component, and the humidifying unit performs humidifying and temperature-raising operations on the compressed air based on the humidifying and heating requirements to obtain wet gas; A temperature control unit, the input end of the temperature control unit, the humidifying unit, and the output end of the temperature control unit are connected in sequence.

6. The air compressor calibration system according to claim 5, characterized in that the temperature control unit includes: A main radiator water tank, the input end of the main radiator water tank is connected to the second output end of the humidifying unit; A thermostat, the first input end of the thermostat is connected to the output end of the main radiator water tank, and the second input end of the thermostat is connected to the second output end of the humidifying unit; A second variable-frequency water pump, the input end of the second variable-frequency water pump is connected to the output end of the thermostat, and the output end of the second variable-frequency water pump is connected to the second input end of the humidifying unit.

7. The air compressor calibration system according to claim 5, characterized in that the wet gas generating assembly further includes: A pressure regulating valve provided between the compressed air generating assembly and the humidifying unit, and the pressure regulating valve is used to reduce the pressure of the compressed air to a preset pressure; A back pressure valve, one end of the back pressure valve is connected to the first output end of the humidifying unit, and the back pressure valve adjusts the flow rate and pressure of the wet gas based on the current flow rate demand and the current pressure demand; A first flow meter, one end of the first flow meter is connected to the other end of the back pressure valve, and the other end of the first flow meter is connected to the humidifying component, and the first flow meter monitors the real-time flow rate of the wet gas.

8. The air compressor calibration system according to claim 3, characterized in that it further includes: A three-way valve provided between the humidifying component and the heat exchanger, the input end of the three-way valve is connected to the gas output end of the heat exchanger, the first output end of the three-way valve is connected to the first input end of the humidifying component, and the second output end of the three-way valve is connected to the cathode side of the fuel cell system engine.

9. The air compressor calibration system according to any one of claims 1-8, characterized in that the humidifying component is a humidifier.

10. An air compressor calibration method, characterized in that using the air compressor calibration system according to any one of claims 1-9, wherein the method includes the following steps: Obtain the calibration requirements of the air compressor to be calibrated; If the calibration requirement is a dry gas calibration requirement, then turn off the humidifying unit, turn on the auxiliary radiator, control the air compressor to be calibrated to turn on to provide dry gas, and when the temperature of the dry gas reaches the first set temperature, enter the cathode side of the fuel cell system engine through the humidifying component; and If the calibration requirement is a wet gas calibration requirement, turn on the main radiator, the auxiliary radiator and the humidifying unit, and turn on the air compressor to be calibrated to supply the dry gas. When the temperature of the air compressor to be calibrated reaches the second preset temperature and the temperature of the dry gas reaches the third set temperature, the dry gas passes through the inside of the membrane tube and is humidified and then enters the cathode side of the fuel cell system engine. Among them, when the humidifying unit inputs the wet gas to the outside of the membrane tube of the humidifying component, the membrane tube permeates water into the inside of the membrane tube of the humidifying component.

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