Fuel cell stack test bench

Abstract

The embodiment of the utility model discloses a fuel cell stack test bench, and the test bench comprises a gas supply module which is used for communicating with a gas inlet of a fuel cell stack, and is used for simulating gas supply; the cooling module is communicated with the gas outlet of the fuel cell stack, and the cooling module is used for condensing part of gas generated by the reaction of the fuel cell stack into liquid; the gas-liquid separation module is communicated with the downstream of the cooling module, and the gas-liquid separation module is used for separating uncondensed gas and liquid formed by condensation; the liquid collection module is communicated with the downstream of the gas-liquid separation module, and the liquid collection module is used for collecting the liquid separated by the gas-liquid separation module and measuring the weight of the liquid separated by the gas-liquid separation module; and the gas measurement module is communicated with the downstream of the gas-liquid separation module, and the gas measurement module is used for measuring the flow of the gas separated by the gas-liquid separation module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell, and particularly relates to a fuel cell stack test bench. BACKGROUND

[0002] Fuel cells generate electricity and water through the chemical reaction of hydrogen and oxygen. In this process, oxidation occurs at the anode, releasing electrons; reduction occurs at the cathode, receiving electrons and combining with hydrogen ions to form water. Therefore, during the operation of the fuel cell, a certain amount of water is generated at the anode and cathode.

[0003] Accurate measurement of the amount of water generated at the anode and cathode of the fuel cell helps to understand the water distribution and flow inside the fuel cell stack, and provides a reference for optimizing the design of the gas supply structure, water drainage structure, etc. of the fuel cell stack. By monitoring and controlling the amount of water generated at the anode and cathode of the fuel cell stack, the electrodes can be kept in the best humidity state, thereby improving the efficiency and stability of the fuel cell stack. CONTENT OF THE INVENTION

[0004] The embodiment of the present application discloses a fuel cell stack test bench, which can measure the amount of water generated at the anode and cathode of the fuel cell stack to provide a data basis for the development of the fuel cell stack.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present application provides a fuel cell stack test bench, which comprises: a gas supply module, the gas supply module is used for communicating with the gas inlet of the fuel cell stack, and the gas supply module is used for simulating gas supply; a cooling module, the cooling module is communicated with the gas outlet of the fuel cell stack, and the cooling module is used for condensing part of the gas generated by the reaction of the fuel cell stack into liquid; a gas-liquid separation module, which is communicated downstream of the cooling module, and the gas-liquid separation module is used for separating the uncondensed gas and the condensed liquid; a liquid collection module, which is communicated downstream of the gas-liquid separation module, and the liquid collection module is used for collecting the liquid separated by the gas-liquid separation module and measuring the weight of the liquid separated by the gas-liquid separation module; a gas measurement module, which is communicated downstream of the gas-liquid separation module, and the gas measurement module is used for measuring the flow of the gas separated by the gas-liquid separation module.

[0006] As an optional implementation, the liquid collection module comprises: a liquid pipeline, which is communicated with the liquid outlet of the gas-liquid separation module, and the liquid pipeline has a liquid outlet; a liquid collection element, which is communicated with the liquid outlet, and the liquid collection element is used for collecting the liquid discharged from the liquid outlet; and a weighing element, which is used for carrying the liquid collection element to measure the weight of the liquid in the liquid collection element.

[0007] As an optional implementation, the liquid collecting module comprises: an electromagnetic valve arranged in the liquid pipeline, the electromagnetic valve being located between the gas-liquid separation module and the liquid collecting element, and the electromagnetic valve being used for controlling opening and closing of the liquid pipeline.

[0008] As an optional implementation, the gas measuring module comprises: a gas pipeline, the gas pipeline being communicated with a gas outlet of the gas-liquid separation module; and a gas flow measuring element arranged in the gas pipeline, the gas flow measuring element being used for measuring a flow of the gas separated by the gas-liquid separation module.

[0009] As an optional implementation, the gas measuring module further comprises: a back pressure valve arranged in the gas pipeline, the back pressure valve being used for controlling gas pressure of the gas pipeline.

[0010] As an optional implementation, the cooling module comprises: a conveying pipeline, a first end of the conveying pipeline being communicated with an air outlet of the fuel cell stack, and a second end of the conveying pipeline being communicated with the gas-liquid separation module; and a heat exchange assembly arranged in the conveying pipeline, the heat exchange assembly being used for cooling the gas generated by the reaction of the fuel cell stack.

[0011] As an optional implementation, the cooling module comprises: a first gas temperature measuring element arranged in the conveying pipeline, the first gas temperature measuring element being located between the heat exchange assembly and the gas-liquid separation module, and the first gas temperature measuring element being used for measuring a temperature of the gas condensed by the heat exchange assembly.

[0012] As an optional implementation, the cooling module comprises: a first pressure measuring element arranged in the conveying pipeline, the first pressure measuring element being located between the heat exchange assembly and the gas-liquid separation module, and the first pressure measuring element being used for measuring a pressure of the gas condensed by the heat exchange assembly.

[0013] As an optional implementation, the cooling module comprises: a second gas temperature measuring element arranged in the conveying pipeline, the second gas temperature measuring element being located between the heat exchange assembly and the air outlet of the fuel cell stack, and the second gas temperature measuring element being used for measuring a temperature of the gas discharged by the air outlet of the fuel cell stack; and / or a second pressure measuring element arranged in the conveying pipeline, the second pressure measuring element being located between the heat exchange assembly and the air outlet of the fuel cell stack, and the second pressure measuring element being used for measuring a pressure of the gas discharged by the air outlet of the fuel cell stack.

[0014] As an optional implementation, the fuel cell stack test bench comprises two gas supply modules, one of which is used to connect the anode of the fuel cell stack, and the other is used to connect the cathode of the fuel cell stack; two cooling modules, one of which is used to connect the anode of the fuel cell stack, and the other is used to connect the cathode of the fuel cell stack; two gas-liquid separation modules, one of which is used to connect the cooling module of the anode of the fuel cell stack, and the other is used to connect the cooling module of the cathode of the fuel cell stack; two liquid collection modules, one of which is used to connect the gas-liquid separation module of the anode of the fuel cell stack, and the other is used to connect the gas-liquid separation module of the cathode of the fuel cell stack; two gas measurement modules, one of which is used to connect the gas-liquid separation module of the anode of the fuel cell stack, and the other is used to connect the gas-liquid separation module of the cathode of the fuel cell stack.

[0015] Compared with the prior art, the application has the following advantages:

[0016] The fuel cell stack test bench provided by the application can input gas into the fuel cell stack through the gas supply module and generate water. The water in the gas state is condensed by the cooling module to form part of the gas and part of the liquid. The gas-liquid separation module separates the gas and the liquid and respectively transports them into the liquid collection module and the gas measurement module for measurement and calculation of the liquid and the gas. The total water amount generated by the fuel cell stack reaction can be obtained by the liquid water amount plus the gas water amount. The fuel cell stack test bench provided by the application can obtain the water amount generated by the fuel cell stack reaction through simple calculation, thereby providing a data basis for subsequent development of the fuel cell stack and improving the efficiency and reliability of the development of the fuel cell stack. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0018] Figure 1 The structural block diagram of the fuel cell stack test bench provided by the application is shown in the following figure.

[0019] Figure 2 The simple flowchart of measuring the water amount generated by the anode and cathode of the fuel cell provided by the application is shown in the following figure.

[0020] Reference Signs List:

[0021] 100 - fuel cell stack test bench; 101 - fuel cell stack; 1 - gas supply module; 2 - cooling module; 21 - delivery line; 22 - heat exchange assembly; 23 - first gas temperature measuring element; 24 - first pressure measuring element; 25 - second gas temperature measuring element; 26 - second pressure measuring element; 3 - gas-liquid separation module; 4 - liquid collection module; 41 - liquid line; 42 - liquid collection element; 43 - weighing element; 44 - solenoid valve; 5 - gas measuring module; 51 - gas line; 52 - back pressure valve; 61 - buffer water tank; 62 - on-off valve. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0023] In the present application, the terms "upper", "lower", "top", "bottom", "inner", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0024] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0025] In addition, the terms "mount", "set", "provided with", "connect", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific situation.

[0026] In addition, the terms "first", "second", and the like are used merely to distinguish different devices, elements or components (the specific type and configuration of which can be the same or different), and are not intended to refer to relative importance or quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0027] A fuel cell is a highly efficient energy conversion device, and its core principle is to directly generate electricity and water through the chemical reaction of hydrogen and oxygen. In this process, hydrogen molecules at the anode undergo oxidation, losing electrons and transforming into hydrogen ions. These electrons then flow through an external circuit to the cathode, forming an electric current. Oxygen molecules at the cathode receive electrons from the anode, undergo reduction, and combine with hydrogen ions transmitted through the electrolyte to ultimately produce water.

[0028] Measuring the amount of water generated at the anode and cathode of a fuel cell can help understand the performance of the fuel cell stack for subsequent development of the fuel cell stack. Measuring the amount of water generated at the anode and cathode of a fuel cell can help understand the water distribution and flow within the fuel cell stack. Water is both a reaction product of the fuel cell stack and necessary to maintain the wetness of the electrodes. Excessive water can cause gas diffusion to be blocked, affecting the reaction rate; while insufficient water can cause the electrodes to dry out, increasing internal resistance and reducing efficiency.

[0029] By monitoring and controlling the amount of water generated at the anode and cathode, the gas supply structure and drainage structure of the fuel cell stack can be optimized. A reasonable gas supply structure can ensure uniform distribution of reaction gases (hydrogen and oxygen) on the electrode surface, thereby improving reaction efficiency. An effective drainage structure can promptly remove excess water to prevent flooding and maintain the optimal wetness of the electrodes.

[0030] A fuel cell stack optimized based on the measurement of water generated at the anode and cathode of the fuel cell will have higher efficiency and stability, with more chemical energy being converted into electrical energy in the fuel cell stack, reducing energy waste. The increase in stability prolongs the service life of the fuel cell and reduces maintenance costs.

[0031] To solve the above problems, the inventors have studied the limitations of existing fuel cell stack test benches, improved the existing fuel cell stack test benches, and designed a fuel cell stack test bench that can easily calculate the amount of water generated at the anode and cathode of a fuel cell, thereby facilitating subsequent research and development of fuel cell stacks, achieving the purpose of improving the efficiency, stability and safety of fuel cells.

[0032] Based on this, the embodiments of the present application disclose a fuel cell stack test bench, which solves the problem of easily calculating the amount of water generated at the anode and cathode of a fuel cell.

[0033] The technical solutions of the present application will be further described below with reference to the embodiments and drawings.

[0034] Please refer to Figure 1 , Figure 1 The structure block diagram of the fuel cell stack test bench 100 provided by the embodiments of the present application, the embodiments of the present application disclose a fuel cell stack test bench 100, comprising: a gas supply module 1, the gas supply module 1 is used for connecting the gas inlet of the fuel cell stack 101, and the gas supply module 1 is used for simulating the gas supply; a cooling module 2, the cooling module 2 is communicated with the gas outlet of the fuel cell stack 101, and the cooling module 2 is used for condensing part of the gas generated by the reaction of the fuel cell stack 101 into liquid; a gas-liquid separation module 3, communicated downstream of the cooling module 2, the gas-liquid separation module 3 is used for separating the uncondensed gas and the condensed liquid; a liquid collection module 4, communicated downstream of the gas-liquid separation module 3, the liquid collection module 4 is used for collecting the liquid separated by the gas-liquid separation module 3 and measuring the weight of the liquid separated by the gas-liquid separation module 3; a gas measurement module 5, communicated downstream of the gas-liquid separation module 3, the gas measurement module 5 is used for measuring the flow of the gas separated by the gas-liquid separation module 3.

[0035] The gas supply module 1 is used for connecting the gas inlet of the fuel cell stack 101, and the gas supply module 1 is used for simulating the gas supply of the fuel cell stack 101 in the normal working process. The gas supply module 1 can transport hydrogen and oxygen like the fuel cell stack 101, so that the hydrogen and oxygen react in the interior of the fuel cell stack 101, thereby generating electric energy and water for the fuel cell stack 101.

[0036] Optionally, the gas supply module 1 can be provided with flow, gas pressure and temperature detection elements to control and detect the flow, gas pressure and temperature of the gas input into the fuel cell stack 101, so as to prevent the safety accidents of the fuel cell stack 101 caused by the too high temperature or gas pressure of the gas input into the fuel cell stack 101.

[0037] The cooling module 2 is communicated with the gas outlet of the fuel cell stack 101. Since the fuel cell stack 101 generates a certain amount of heat in the reaction process, the water generated by the reaction of the fuel cell stack 101 is discharged in the form of water vapor when flowing out of the gas outlet, that is, the water flowing out of the gas outlet is in the gas state. The gas state water is transmitted from the gas outlet of the fuel cell stack 101 into the cooling module 2, and part of the gas state water can be condensed into liquid state water when passing through the cooling module 2.

[0038] It can be understood that the gas supply module 1 inputs hydrogen and oxygen into the fuel cell stack 101 to carry out the reaction of the fuel cell stack 101, and the fuel cell stack 101 generates electric energy and water in the process of the reaction. The gaseous water generated by the fuel cell stack 101 is discharged from the gas outlet into the cooling module 2, and the gaseous water is converted into gaseous water and part of liquid water after being cooled by the cooling module 2.

[0039] The gas-liquid separation module 3 is connected downstream of the cooling module 2 to ensure that the gaseous water and part of the liquid water cooled by the cooling module 2 can enter the gas-liquid separation module 3 to separate the gas and the liquid. The gas-liquid separation module 3 can separate the uncondensed gas and the condensed liquid by gravity sedimentation, centrifugal separation, filtration or impinging stream principle.

[0040] When the mixed gas and liquid enter the gas-liquid separation module 3, the heavier liquid water will sink downward due to gravity, and the lighter gas will continue to flow upward, thereby realizing the separation of the gaseous water and the liquid water. Alternatively, the gas-liquid separation module 3 can be provided with a special separation structure (for example: baffle, cyclone and filter medium, etc.) to enhance the effect of gas-liquid separation.

[0041] The liquid collection module 4 is connected downstream of the gas-liquid separation module 3, and the liquid collection module 4 can collect the liquid separated by the gas-liquid separation module 3. The liquid separated by the gas-liquid separation module 3 flows from the gas-liquid separation module 3 into the liquid collection module 4, and the liquid collection module 4 can collect the liquid separated by the gas-liquid separation module 3 together and measure the weight of the liquid separated by the gas-liquid separation module 3 to measure how much the liquid separated by the gas-liquid separation module 3.

[0042] Specifically, the liquid collection module 4 can be provided with a collection container and a weight measuring device to achieve the purpose of collecting and measuring the liquid separated by the gas-liquid separation module 3.

[0043] The gas measurement module 5 is connected downstream of the gas-liquid separation module 3, and the gas measurement module 5 can collect the gas separated by the gas-liquid separation module 3. The gas measurement module 5 is used to measure the flow of the gas separated by the gas-liquid separation module 3 to carry out the dew point calculation of the water content of the gas separated by the gas-liquid separation module 3.

[0044] By measuring the water content of the gas separated by the gas-liquid separation module 3 and adding the amount of the liquid separated by the gas-liquid separation module 3, the total amount of water generated by the reaction of the fuel cell stack 101 can be obtained.

[0045] Therefore, the fuel cell stack test bench 100 provided by the embodiment of the present application can input gas into the fuel cell stack 101 through the gas supply module 1 and generate water, the water in the gas state is condensed by the cooling module 2 to form part of gas and part of liquid, the gas and liquid are separated by the gas-liquid separation module 3 and are respectively transported into the liquid collection module 4 and the gas measurement module 5 to measure and calculate the liquid and the gas, and the total water amount generated by the reaction of the fuel cell stack 101 can be obtained by adding the water amount of the liquid and the water amount of the gas. The fuel cell stack test bench 100 provided by the embodiment of the present application can obtain the water amount generated by the reaction of the fuel cell stack 101 through simple calculation, so as to provide a data basis for the subsequent development of the fuel cell stack 101 and improve the efficiency and reliability of the development of the fuel cell stack 101.

[0046] Please refer to Figure 1 In some embodiments, the liquid collection module 4 comprises: a liquid pipeline 41 connected to the liquid outlet of the gas-liquid separation module 3, the liquid pipeline 41 having a liquid outlet; a liquid collection element 42, the liquid collection element 42 being connected to the liquid outlet, the liquid collection element 42 being used for collecting the liquid discharged from the liquid outlet; and a weighing element 43, the weighing element 43 being used for bearing the liquid collection element 42 to measure the weight of the liquid in the liquid collection element 42.

[0047] The liquid pipeline 41 is a channel connecting the liquid outlet of the gas-liquid separation module 3 and the liquid collection element 42. The liquid pipeline 41 is responsible for transmitting the liquid separated by the gas-liquid separation module 3 from the gas-liquid separation module 3 to the liquid collection element 42. The liquid pipeline 41 has a liquid outlet, which is the outlet of the liquid in the liquid pipeline 41 and the inlet of the liquid into the collection element.

[0048] The liquid collection element 42 is connected to the liquid outlet of the liquid pipeline 41, and the liquid collection element 42 is used for receiving and storing the liquid separated from the gas-liquid separation module 3. The liquid collection element 42 can ensure the stable storage of the liquid in the liquid collection element 42, and facilitate the subsequent liquid treatment or discharge.

[0049] Optionally, the liquid collection element 42 can be a measuring cup, a measuring cylinder, a collection bottle and other elements capable of realizing liquid collection, and the embodiment of the present application does not limit this.

[0050] The weighing element 43 is used for bearing the liquid collection element 42 and determining the weight of the liquid by measuring the total weight of the liquid collection element 42 and the liquid inside the liquid collection element 42. The weighing element 43 can monitor the weight of the liquid in the liquid collection element 42 in real time, so that the weighing element 43 can accurately measure the weight of the liquid separated by the gas-liquid separation module 3, and thus the water amount generated by the reaction of the fuel cell stack 101 calculated is more accurate.

[0051] Optionally, the weighing element 43 can be an element capable of measuring the weight of the liquid, such as an electronic scale and a weighing sensor, and the like, and the present application does not limit the same.

[0052] Please refer to Figure 1 In some embodiments, the liquid collection module 4 comprises: an electromagnetic valve 44 arranged in the liquid pipeline 41, the electromagnetic valve 44 is located between the gas-liquid separation module 3 and the liquid collection element 42, and the electromagnetic valve 44 is used to control the opening and closing of the liquid pipeline 41.

[0053] The electromagnetic valve 44 is a device for controlling the flow of fluid by using electromagnetic force. In the liquid collection module 4, the electromagnetic valve 44 can control the opening and closing of the liquid pipeline 41, thereby realizing the control of the liquid flow. The electromagnetic valve 44 is arranged in the liquid pipeline 41 and located between the gas-liquid separation module 3 and the liquid collection element 42. In this way, the electromagnetic valve 44 can make the separated liquid flow into the liquid collection element 42.

[0054] When the measurement of the total water generated by the reaction of the fuel cell stack 101 is not required, the liquid does not need to be measured by the weighing element 43, at this time, the electromagnetic valve 44 is closed, and the liquid does not pass through the liquid collection module 4 but directly enters the gas measurement module 5 from the gas-liquid separation module 3 and then is discharged from the fuel cell stack test bench 100.

[0055] Please refer to Figure 1 In some embodiments, the gas measurement module 5 comprises: a gas pipeline 51, the gas pipeline 51 is communicated with the gas outlet of the gas-liquid separation module 3; and a gas flow measurement element arranged in the gas pipeline 51, the gas flow measurement element is used to measure the flow of the gas separated by the gas-liquid separation module 3.

[0056] The gas pipeline 51 is a channel connecting the gas outlet of the gas-liquid separation module 3 and the gas flow measurement element. The gas pipeline 51 can transmit the gas separated by the gas-liquid separation module 3 to the gas flow measurement element. The gas pipeline 51 can ensure the smooth flow of the gas, reduce the pressure loss and leakage risk of the gas, and prevent the gas from leaking from the gas pipeline 51 to cause errors in the calculation of the total water generated by the subsequent reaction of the fuel cell stack 101.

[0057] The gas flow measurement element is used to measure the flow of the gas separated from the gas-liquid separation module 3, so that the data measured by the gas flow measurement element is used for the subsequent dew point calculation of the gas, thereby obtaining an accurate result of the water content in the gas.

[0058] Please refer to Figure 1 In some embodiments, the gas measurement module 5 further comprises: a back pressure valve 52 arranged in the gas pipeline 51, the back pressure valve 52 is used to control the gas pressure of the gas pipeline 51.

[0059] The back pressure valve 52 controls the pressure of the gas by adjusting the opening of the valve. When the pressure in the gas pipeline 51 is lower than the set value, the back pressure valve 52 will be closed or the opening will be reduced to increase the back pressure in the gas pipeline 51, thereby stabilizing the gas flow. Conversely, when the pressure in the gas pipeline 51 is higher than the set value, the back pressure valve 52 will be opened or the opening will be increased to reduce the pressure in the gas pipeline 51, thereby ensuring the stability and accuracy of the gas pressure during the measurement process.

[0060] The back pressure valve 52 stabilizes the gas flow by controlling the gas pressure, preventing excessive gas pressure from damaging the gas flow measurement element. The setting of the back pressure valve 52 can limit the maximum pressure in the pipeline, thereby protecting the gas flow measurement element from damage. By stabilizing the gas pressure, the back pressure valve 52 can reduce fluctuations and errors in the gas flow measurement process, thereby improving the accuracy of measuring the total water generated by the fuel cell stack 101.

[0061] Please refer to Figure 1 In some embodiments, the cooling module 2 comprises a delivery pipeline 21, a first end of the delivery pipeline 21 being connected to the gas outlet of the fuel cell stack 101, and a second end of the delivery pipeline 21 being connected to the gas-liquid separation module 3; a heat exchange assembly 22 is arranged in the delivery pipeline 21, and the heat exchange assembly 22 is used to cool the gas generated by the reaction of the fuel cell stack 101.

[0062] The delivery pipeline 21 is a channel for the flow of gas in the cooling module 2, and the delivery pipeline 21 can lead the hot gas generated by the reaction of the fuel cell stack 101 out of the gas outlet of the stack body and deliver it to the subsequent gas-liquid separation module 3.

[0063] Optionally, the delivery pipeline 21 can be made of high-temperature-resistant and corrosion-resistant materials to ensure that it can maintain good gas sealing and mechanical strength in high-temperature and corrosive environments.

[0064] The delivery pipeline 21 has a first end and a second end, the first end is connected to the gas outlet of the fuel cell stack 101 to enable the hot gas to smoothly enter the pipeline, and the second end of the delivery pipeline 21 is connected to the gas-liquid separation module 3 to further separate the cooled gas and liquid.

[0065] The heat exchange assembly 22 can use a cooling medium to exchange heat with the hot gas generated by the fuel cell stack 101, thereby reducing the temperature of the gas and allowing part of the gas to condense into liquid. Optionally, the heat exchange assembly 22 can use a plate heat exchanger, a tube-in-shell heat exchanger or other high-efficiency heat exchange structure to ensure the high efficiency and reliability of heat exchange.

[0066] Please refer to Figure 1In some embodiments, the cooling module 2 comprises a first gas temperature measuring element 23 arranged in the delivery pipeline 21, the first gas temperature measuring element 23 being located between the heat exchange assembly 22 and the gas-liquid separation module 3, and the first gas temperature measuring element 23 being configured to measure the temperature of the gas condensed by the heat exchange assembly 22. The first gas temperature measuring element 23 can measure and output the temperature data of the gas processed by the heat exchange assembly 22, so as to reduce the temperature of the gas to a predetermined temperature, facilitating the subsequent dew point calculation of the gas. Meanwhile, the gas temperature data can also evaluate the cooling effect of the heat exchange assembly 22 and monitor the running state of the cooling system.

[0067] Referring to Figure 1 In some embodiments, the cooling module 2 comprises a first pressure measuring element 24 arranged in the delivery pipeline 21, the first pressure measuring element 24 being located between the heat exchange assembly 22 and the gas-liquid separation module 3, and the first pressure measuring element 24 being configured to measure the pressure of the gas condensed by the heat exchange assembly 22. The first pressure measuring element 24 can measure and output the pressure data of the gas processed by the heat exchange assembly 22, so as to facilitate the subsequent dew point calculation of the gas. Meanwhile, the gas pressure data can also evaluate the cooling effect of the heat exchange assembly 22 and monitor the running state of the cooling system.

[0068] Referring to Figure 1 In some embodiments, the cooling module 2 comprises a second gas temperature measuring element 25 arranged in the delivery pipeline 21, the second gas temperature measuring element 25 being located between the heat exchange assembly 22 and the gas outlet of the fuel cell stack 101, and the second gas temperature measuring element 25 being configured to measure the temperature of the gas discharged from the gas outlet of the fuel cell stack 101; and / or a second pressure measuring element 26 arranged in the delivery pipeline 21, the second pressure measuring element 26 being located between the heat exchange assembly 22 and the gas outlet of the fuel cell stack 101, and the second pressure measuring element 26 being configured to measure the pressure of the gas discharged from the gas outlet of the fuel cell stack 101.

[0069] The second gas temperature measuring element 25 can measure the temperature of the gas discharged from the gas outlet of the fuel cell stack 101, i.e. the temperature of the working environment of the fuel cell stack 101, so as to prevent the temperature of the working environment of the fuel cell stack 101 from being too high to cause safety hazards or affect the working efficiency of the fuel cell stack 101.

[0070] The second pressure measuring element 26 can measure the pressure of the gas discharged from the gas outlet of the fuel cell stack 101, i.e. the gas pressure of the working environment of the fuel cell stack 101, and the gas pressure data is of great significance for evaluating the running state of the fuel cell stack 101, monitoring the gas flow condition and diagnosing potential faults. If the pressure abnormally rises, it may indicate that there is a blockage or poor gas flow in the fuel cell stack 101.

[0071] Referring to Figure 1In some embodiments, the fuel cell stack test bench 100 comprises two gas supply modules 1, one of which is used to communicate with the anode of the fuel cell stack 101, and the other is used to communicate with the cathode of the fuel cell stack 101;

[0072] Two cooling modules 2, one of which is used to communicate with the anode of the fuel cell stack 101, and the other is used to communicate with the cathode of the fuel cell stack 101;

[0073] Two gas-liquid separation modules 3, one of which is used to communicate with the cooling module 2 of the anode of the fuel cell stack 101, and the other is used to communicate with the cooling module 2 of the cathode of the fuel cell stack 101;

[0074] Two liquid collection modules 4, one of which is used to communicate with the gas-liquid separation module 3 of the anode of the fuel cell stack 101, and the other is used to communicate with the gas-liquid separation module 3 of the cathode of the fuel cell stack 101;

[0075] Two gas measurement modules 5, one of which is used to communicate with the gas-liquid separation module 3 of the anode of the fuel cell stack 101, and the other is used to communicate with the gas-liquid separation module 3 of the cathode of the fuel cell stack 101.

[0076] The two gas supply modules 1, the two cooling modules 2, the two gas-liquid separation modules 3, the two liquid collection modules 4 and the two gas measurement modules 5 are respectively arranged at the anode and the cathode of the fuel cell stack 101, so that the amount of water generated by the anode and the amount of water generated by the cathode of the fuel cell stack 101 can be calculated respectively, thereby obtaining more accurate reaction data of the fuel cell stack 101, and providing data basis for the development of the fuel cell stack 101.

[0077] Please refer to Figure 1 In some embodiments, the gas measurement module 5 comprises a buffer water tank 61 and a cooling water tail discharge, the buffer water tank 61 is communicated with the gas pipeline 51, when it is not necessary to measure the amount of water generated by the fuel cell, the electromagnetic valve 44 is closed, the gas-liquid separation module 3 stops the gas-liquid separation work, the uncondensed gas and the condensed liquid enter the gas measurement module 5 after passing through the gas-liquid separation module 3, the condensed liquid enters the buffer water tank 61, and after collection, it is discharged from the cooling water tail discharge of the fuel cell stack test bench 100. The uncondensed gas is discharged from the upper gas tail discharge of the fuel cell stack test bench 100.

[0078] Optionally, a switch valve 62 can be arranged on the cooling water tail discharge, which is used to close or open the cooling water tail discharge, and when it is necessary to measure the amount of water of the fuel cell stack 101, the switch valve 62 can be closed, so as to prevent the condensed water from being discharged from the cooling water tail discharge of the fuel cell stack test bench 100.

[0079] For example, Figure 2 For example, Figure 2 A simple flowchart for measuring water production of fuel cell cathode and anode is provided in the embodiments of the present application. The process of measuring water production of fuel cell cathode and anode by the fuel cell stack test bench 100 simply includes the following steps:

[0080] Step S1: The gas supply module 1 provides the fuel cell stack 101 with the required gas for the cathode and anode of the fuel cell stack 101;

[0081] Step S2: The electronic load is stabilized in the working condition;

[0082] Step S3: Set the running time, and in the steady state, the water produced by the fuel cell stack 101 is condensed by the cooling module 2 and then separated by the gas-liquid separation module 3;

[0083] Step S4: The gas temperature at the outlet of the heat exchange assembly 22 is monitored synchronously to ensure that the gas temperature is stable;

[0084] Step S5: In the set time period, the content of the liquid water produced by the cathode and anode is collected and measured by the weighing element 43;

[0085] Step S6: Since the gas temperature of the cathode and anode is about 20℃, the generated gas is in a saturated state by default, and the dew point temperature is the gas temperature;

[0086] Step S7: The actual water production of the fuel cell stack 101 cathode and anode is calculated by calculating the content of the water in the liquid collection module 4 and adding the water content in the gas flow in the gas measurement module 5.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A fuel cell stack test stand, characterized by, The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system.

2. The fuel cell stack test stand of claim 1, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system.

3. The fuel cell stack test stand of claim 2, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system.

4. The fuel cell stack test stand of claim 1, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system.

5. The fuel cell stack test stand of claim 4, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system.

6. The fuel cell stack test stand of claim 1, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system.

7. The fuel cell stack test stand of claim 6, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system.

8. The fuel cell stack test stand of claim 6, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system.

9. The fuel cell stack test stand of claim 6, wherein, The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test system. The application relates to a fuel cell test A second pressure measuring element is arranged in the delivery pipeline, and is located between the heat exchange assembly and the gas outlet of the fuel cell stack, and is used to measure the pressure of the gas discharged from the gas outlet of the fuel cell stack.

10. The fuel cell stack test stand of claim 1, wherein, The fuel cell stack test bench comprises: Two gas supply modules, one of which is used to connect the anode of the fuel cell stack, and the other is used to connect the cathode of the fuel cell stack; Two cooling modules, one of which is used to connect the anode of the fuel cell stack, and the other is used to connect the cathode of the fuel cell stack; Two gas-liquid separation modules, one of which is used to connect the cooling module of the anode of the fuel cell stack, and the other is used to connect the cooling module of the cathode of the fuel cell stack; Two liquid collection modules, one of which is used to connect the gas-liquid separation module of the anode of the fuel cell stack, and the other is used to connect the gas-liquid separation module of the cathode of the fuel cell stack; Two gas measuring modules, one of which is used to connect the gas-liquid separation module of the anode of the fuel cell stack, and the other is used to connect the gas-liquid separation module of the cathode of the fuel cell stack.

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