Constant-temperature humidifying device for gas to be reacted for fuel cell test

Abstract

The utility model discloses a to-be-reacted gas constant-temperature humidifying device for a fuel cell test, which comprises a shell used for integrating and protecting a test system; the gas inlet group is arranged outside the shell and is used for introducing to-be-reacted gas; the gas flow monitoring module is arranged in the shell, is connected with the gas inlet group and is used for monitoring and controlling the flow rate of the to-be-reacted gas; the gas humidity adjusting module is arranged in the shell, is connected with the gas flow monitoring module and is used for monitoring and controlling the humidity of the gas to be reacted; the heating pipeline group is arranged outside the shell, and the gas inlet end of the heating pipeline group is connected with the gas humidity adjusting module and is used for heating the gas to be reacted; the gas outlet end of the heating pipeline group is connected with a to-be-tested fuel cell and is used for inputting to-be-reacted gas to the to-be-tested fuel cell; the gas temperature monitoring module is arranged in the shell, connected with the gas humidity adjusting module and the heating pipeline set and used for monitoring and controlling the gas temperature in the gas humidity adjusting module and the heating pipeline set.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell testing, and particularly relates to a constant temperature and humidity device for reaction gases to be tested in fuel cell testing. Background Art

[0002] As a clean and efficient energy technology, fuel cells have received extensive attention and applications. In the process of research and development and application of fuel cell technology, the test system device plays a crucial role in evaluating key indicators such as the performance, stability, and efficiency of fuel cells, providing important support for the research, development, and commercial application of fuel cell technology.

[0003] Before the gas reaction test of a fuel cell, it is necessary to ensure that the reaction gas entering the fuel cell is in a constant temperature and humidity state, which can effectively avoid or reduce temperature and humidity fluctuations and ensure the stability of the test experimental conditions. The existing gas constant temperature and humidity integration in fuel cell testing is not high, and additional accessories such as gas humidification and constant temperature control accessories need to be purchased separately. This results in the need to externally connect multiple accessories for each test. Due to the large number of accessories, it is not convenient to carry. The gas pipeline used for introducing the reaction gas into the fuel cell to be tested does not have integrated temperature control and monitoring, which causes certain deviations in the test results. The gas interface part uses a threaded interface, with poor airtightness and cannot be replaced.

[0004] Designing a constant temperature and humidity device for reaction gases to be tested in fuel cell testing to address the above existing technical problems is the purpose of the research of this utility model. Content of the Utility Model

[0005] The purpose of this utility model is to overcome the deficiencies of the prior art and provide a constant temperature and humidity device for reaction gases to be tested in fuel cell testing, which can solve the above technical problems.

[0006] This utility model provides a constant temperature and humidity device for reaction gases to be tested in fuel cell testing, including:

[0007] A housing for integrating and protecting the test system;

[0008] An air inlet group arranged outside the housing for accessing the reaction gas to be tested;

[0009] A gas flow monitoring module is arranged inside the housing and is connected to the air inlet group for monitoring and controlling the flow rate of the reaction gas to be tested;

[0010] A gas humidity adjustment module is arranged inside the housing and is connected to the gas flow monitoring module for monitoring and controlling the humidity of the reaction gas to be tested;

[0011] The heating pipe group is arranged outside the housing. The intake end of the heating pipe group is connected to the gas humidity adjustment module for heating and maintaining the temperature of the gas to be reacted. The outlet end of the heating pipe group is connected to the fuel cell to be tested for inputting the gas to be reacted into the fuel cell to be tested.

[0012] The gas temperature monitoring module is arranged inside the housing and is respectively connected to the gas humidity adjustment module and the heating pipe group for monitoring and controlling the gas temperature in the gas humidity adjustment module and the heating pipe group to ensure that the gas to be reacted introduced into the fuel cell to be tested has a constant temperature.

[0013] Further, the intake port group includes:

[0014] The anode intake port for accessing hydrogen.

[0015] The cathode intake port for accessing oxygen.

[0016] The anode intake port and the cathode intake port are quick-connect interfaces.

[0017] Further, the gas flow monitoring module includes:

[0018] The anode flow controller is connected to the anode intake port for monitoring and controlling the flow rate of hydrogen.

[0019] The cathode flow controller is connected to the cathode intake port for monitoring and controlling the flow rate of oxygen.

[0020] Further, the anode flow controller is connected to an anode flow display for controlling and displaying the hydrogen flow rate, and the anode flow display is arranged outside the housing.

[0021] The cathode flow controller is connected to a cathode flow display for controlling and displaying the oxygen flow rate, and the cathode flow display is arranged outside the housing.

[0022] Further, the gas humidity adjustment module includes:

[0023] The anode humidifying tank is connected to the anode flow controller, and an anode bubbler is arranged inside the anode humidifying tank for humidifying hydrogen.

[0024] The cathode humidifying tank is connected to the cathode flow controller, and a cathode bubbler is arranged inside the cathode humidifying tank for humidifying oxygen.

[0025] Further, an anode liquid level sensing and control module is arranged inside the anode humidifying tank for monitoring and controlling the water level in the anode humidifying tank.

[0026] Inside the cathode humidification tank, there is a cathode liquid level sensing and control module for monitoring and controlling the water level of the cathode humidification tank.

[0027] Furthermore, the anode liquid level sensing and control module is connected to an anode solenoid valve, and the cathode liquid level sensing and control module is connected to a cathode solenoid valve. The anode solenoid valve and the cathode solenoid valve are connected to a diaphragm pump. The diaphragm pump is connected to an external water tank through a water outlet and a water inlet. When the anode liquid level sensing and control module and / or the cathode liquid level sensing and control module detects that the liquid level in the corresponding anode humidification tank and / or cathode humidification tank is lower than a preset value, it controls the anode solenoid valve and / or the cathode solenoid valve to open, and the anode humidification tank and / or the cathode humidification tank obtain the water from the water tank pumped by the diaphragm pump.

[0028] Furthermore, the gas temperature monitoring module includes:

[0029] An anode temperature control module, which is arranged inside the anode humidification tank and is used for heating the hydrogen in the anode humidification tank;

[0030] The anode temperature control module is connected to an anode temperature display for controlling and displaying the temperature of the hydrogen in the anode humidification tank;

[0031] A cathode temperature control module, which is arranged inside the cathode humidification tank and is used for heating the oxygen in the cathode humidification tank;

[0032] The cathode temperature control module is connected to a cathode temperature display for controlling and displaying the temperature of the oxygen in the cathode humidification tank.

[0033] Furthermore, the heating pipeline group includes an anode heating pipeline and a cathode heating pipeline;

[0034] The gas temperature monitoring module includes: an anode pipeline temperature control display and a cathode pipeline temperature control display;

[0035] The anode heating pipeline is connected to the anode pipeline temperature control display for controlling and displaying the temperature of the anode heating pipeline;

[0036] The cathode heating pipeline is connected to the cathode pipeline temperature control display for controlling and displaying the temperature of the cathode heating pipeline.

[0037] Furthermore, the gas temperature monitoring module includes: a battery temperature control module;

[0038] The battery temperature control module is connected to the fuel cell to be measured for controlling and monitoring the temperature of the fuel cell to be measured and keeping the internal and external temperatures of the fuel cell to be measured consistent.

[0039] The utility model has the following advantages:

[0040] First, by integrating the entire test system into a housing, the portability of the system is increased, enabling users to easily carry and set up this test system; the housing provides physical protection for internal components, preventing damage to the instrument caused by environmental factors (such as dust, water vapor, etc.) and accidental collisions. Quick-connect interfaces usually have good sealing performance, reducing the risk of gas leakage and ensuring the safety of experiments. Quick-connect interfaces are used for both the cathode and anode gas inlets, making the connection and disconnection of gas pipelines faster and more convenient, and improving the operation efficiency.

[0041] Second, by respectively setting flow controllers at the anode and cathode, the system can accurately monitor and adjust the flow rates of hydrogen and oxygen. This precise control is crucial for optimizing the performance and efficiency testing of fuel cells. Through precise flow monitoring, the system can prevent excessive or insufficient supply of hydrogen and oxygen, reducing safety hazards and system instability. By placing the flow display outside the housing, users can directly view and adjust the gas flow without opening the housing, improving the operation convenience and user experience. The gas flow monitoring module can be flexibly adjusted according to actual needs for different test setups and different types of fuel cells, enhancing the universality of its application.

[0042] Third, through the gas temperature monitoring module, it can ensure that the gases to be reacted (whether hydrogen or oxygen) entering the fuel cell are maintained at the required constant temperature, which is crucial for the efficient operation and reliable performance of the fuel cell; by controlling the temperature of the humidifying tank and the heating pipeline, the system can effectively avoid or reduce temperature fluctuations and ensure the stability of test experimental conditions. To ensure the constant temperature of the gases entering the fuel cell to be tested, a heating function is added to the connected anode and cathode pipelines, and heating wires are used to heat the gases in the heating pipes, which are respectively connected to the temperature acquisition and control of the anode pipeline temperature control display and the cathode pipeline temperature control display. Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 It is the external structure diagram of Embodiment 1.

[0045] Figure 2 It is the internal structure diagram of Embodiment 1.

[0046] Figure 3 It is the system working principle diagram of Embodiment 1. Detailed implementation manners

[0047] The following will further describe the present utility model in detail in conjunction with the accompanying drawings and embodiments. It should be specifically noted that the following embodiments are only used to illustrate the present utility model, but do not limit the scope of the present utility model. Similarly, the following embodiments are only partial embodiments of the present utility model rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0048] Embodiment 1

[0049] As Figure 1 、 Figure 2 shown, this solution provides a constant-temperature humidifying device for reaction gases to be tested in a fuel cell, including:

[0050] A housing 1 for integrating and protecting the test system;

[0051] An air inlet group 2 arranged outside the housing 1 for accessing the reaction gases to be tested;

[0052] Further, an anode air inlet 21 for accessing hydrogen; a cathode air inlet 22 for accessing oxygen;

[0053] The anode air inlet 21 and the cathode air inlet 22 are quick-connect interfaces.

[0054] In the embodiment, by integrating the entire test system in a housing, the portability of the system is increased, enabling users to easily carry and set up this test system; the housing provides physical protection for the internal components, avoiding damage to the instrument caused by environmental factors (such as dust, water vapor, etc.) and accidental collisions. Quick-connect interfaces usually have good sealing performance, reducing the risk of gas leakage and ensuring the safety of the experiment. Both the cathode and anode air inlets use quick-connect interfaces, and such a design makes the connection and disconnection of the gas pipelines faster and more convenient, improving the operation efficiency.

[0055] As Figure 2 shown, a gas flow monitoring module 3 is arranged inside the housing 1 and is connected to the air inlet group 2 for monitoring and controlling the flow rate of the reaction gases to be tested;

[0056] Further, an anode flow controller 31 is connected to the anode air inlet 21 for monitoring and controlling the flow rate of hydrogen;

[0057] A cathode flow controller 32 is connected to the cathode air inlet 22 for monitoring and controlling the flow rate of oxygen.

[0058] Further, the anode flow controller 31 is connected to an anode flow display 33, and the anode flow display 33 is arranged outside the housing 1 for controlling and displaying the hydrogen gas flow rate;

[0059] The cathode flow controller 32 is connected to a cathode flow display 34, and the cathode flow display 34 is arranged outside the housing 1 for controlling and displaying the oxygen gas flow rate.

[0060] In this embodiment, by respectively arranging flow controllers at the anode and the cathode, the system can accurately monitor and adjust the flow rates of hydrogen and oxygen. This precise control is crucial for optimizing the performance and efficiency testing of the fuel cell. Through precise flow monitoring, the system can prevent excessive or insufficient supply of hydrogen and oxygen, reducing safety hazards and system instability. By placing the flow display outside the housing, users can directly view and adjust the gas flow rate without opening the housing, improving the operation convenience and user experience. The gas flow monitoring module can be flexibly adjusted according to actual needs for different test setups and different types of fuel cells, enhancing the universality of its application.

[0061] As Figure 2 shown, the gas humidity adjustment module 4 is arranged inside the housing 1 and is connected to the gas flow monitoring module 3 for monitoring and controlling the humidity of the gas to be reacted;

[0062] Further, the gas humidity adjustment module 4 includes:

[0063] An anode humidifying tank 41, connected to the anode flow controller 31, and an anode bubbler is arranged inside the anode humidifying tank 41 for humidifying hydrogen;

[0064] A cathode humidifying tank 42, connected to the cathode flow controller 32, and a cathode bubbler is arranged inside the cathode humidifying tank 42 for humidifying oxygen.

[0065] Further, an anode liquid level sensing and control module (not shown in the figure) is arranged inside the anode humidifying tank 41 for monitoring and controlling the water level of the anode humidifying tank 41;

[0066] A cathode liquid level sensing and control module (not shown in the figure) is arranged inside the cathode humidifying tank 42 for monitoring and controlling the water level of the cathode humidifying tank 42.

[0067] Further, the anode liquid level sensing and control module (not shown in the figure) is connected to an anode solenoid valve 43, and the cathode liquid level sensing and control module (not shown in the figure) is connected to a cathode solenoid valve 44. The anode solenoid valve 43 and the cathode solenoid valve 44 are connected to a diaphragm pump 45. The diaphragm pump 45 is connected to an external water tank through a water outlet 10 and a water inlet 11. When the anode liquid level sensing and control module and / or the cathode liquid level sensing and control module (not shown in the figure) detects that the liquid level in the corresponding anode humidifying tank 41 and / or cathode humidifying tank 42 is lower than a preset value, the anode solenoid valve 43 and / or the cathode solenoid valve 44 is controlled to open, and the anode humidifying tank 41 and / or the cathode humidifying tank 42 obtains the water from the water tank pumped by the diaphragm pump 45.

[0068] In this embodiment, the bubbler is a device for introducing gas into a liquid, and provides a humidifying function for hydrogen and oxygen through the anode and cathode humidifying tanks respectively. The gas humidity can be adjusted through the gas humidity adjustment module to optimize the performance of the fuel cell. A suitable humidity level helps to maintain the hydration state of the electrolyte membrane in the fuel cell, improving conductivity and the overall reaction efficiency. The liquid level sensing and control module monitors the water level of the humidifying tank in real time and intelligently controls the opening and closing of the solenoid valve to ensure that the water level in the humidifying tank is maintained at an optimal level. The diaphragm pump is a positive displacement pump that uses the reciprocating motion of a diaphragm to drive the fluid. It generates a pressure difference through the reciprocating motion of the diaphragm (usually made of an elastic material) in the cavity, thereby sucking in and discharging the fluid. The diaphragm pump is connected to an external water tank through a water inlet and a water outlet. When the liquid level is lower than the preset value, it can automatically replenish water to ensure the continuous and stable operation of the system, reducing the frequency of manual water replenishment; by automatically humidifying the gas, it helps to prevent the membrane in the fuel cell from drying and degrading when the gas reacts in the fuel cell, protecting the fuel cell components and extending their service life.

[0069] As Figure 1 and Figure 2 shown, the heating pipe group 5 is arranged outside the housing 1. The air inlet end of the heating pipe group 5 is connected to the gas humidity adjustment module 4 for heating and insulating the temperature of the gas to be reacted; the air outlet end of the heating pipe group 5 is connected to the fuel cell to be tested for inputting the gas to be reacted into the fuel cell to be tested.

[0070] As Figure 2 shown, the gas temperature monitoring module 6 is arranged inside the housing and is respectively connected to the gas humidity adjustment module 4 and the heating pipe group 5 for monitoring and controlling the gas temperature in the gas humidity adjustment module and the heating pipe group to ensure that the gas to be reacted introduced into the fuel cell to be tested is at a constant temperature.

[0071] Further, the gas temperature monitoring module 6 includes:

[0072] The anode temperature control module (not shown in the figure) is disposed inside the anode humidification tank 41 and is used to heat the hydrogen gas in the anode humidification tank 41.

[0073] The anode temperature control module is connected to an anode temperature display 61, which is used to control and display the temperature of the hydrogen gas in the anode humidification tank 41.

[0074] The cathode temperature control module (not shown in the figure) is disposed inside the cathode humidification tank 42 and is used to heat the oxygen gas in the cathode humidification tank 42.

[0075] The cathode temperature control module is connected to a cathode temperature display 62, which is used to control and display the temperature of the oxygen gas in the cathode humidification tank 42.

[0076] In this embodiment, the anode temperature control module and the cathode temperature control module are integrated devices of heating rods, temperature sensors, and controllers. The temperature of the gas in the humidification tank is collected by the temperature sensors. When the gas temperature is lower than the set temperature, the heating rods are controlled by the controllers to heat the gas, so that the gas in the humidification tank is kept at a constant temperature.

[0077] The gas temperature monitoring module 6 includes: an anode pipeline temperature control display 63 and a cathode pipeline temperature control display 64;

[0078] The heating pipeline group 5 includes an anode heating pipeline 51 and a cathode heating pipeline 52;

[0079] The anode heating pipeline 51 is connected to the anode pipeline temperature control display 63, which is used to control and display the temperature of the anode heating pipeline 51.

[0080] The cathode heating pipeline 52 is connected to the cathode pipeline temperature control display 64, which is used to control and display the temperature of the cathode heating pipeline 52.

[0081] In this embodiment, the anode heating pipeline 51 and the cathode heating pipeline 52 are integrated modules of heating wires and temperature sensors, and the anode pipeline temperature control display 63 and the cathode pipeline temperature control display 64 are integrated modules of a display screen and a controller. The temperature inside the pipeline is collected by the temperature sensors. If the temperature is lower than the set value, the heating wires are controlled by the controllers to heat the pipeline, and the temperature can be displayed and adjusted through the display screen.

[0082] An appropriate gas temperature can improve the efficiency of chemical reactions and enhance the overall performance of the fuel cell; through precise temperature control, the system can avoid gas condensation (at low temperatures) or drying (at high temperatures) caused by temperature changes, thereby protecting the electrolyte membrane.

[0083] The gas temperature monitoring module can ensure that the reactant gas (whether hydrogen or oxygen) entering the fuel cell remains at the required constant temperature, which is crucial for the efficient operation and reliable performance of the fuel cell; by controlling the temperature of the humidification tank and the heating pipeline, the system can effectively avoid or reduce temperature fluctuations and ensure the stability of the test experimental conditions.

[0084] To ensure a constant temperature of the gas entering the fuel cell under test, a heating function is added to the connected anode and cathode pipelines. A heating wire is used to heat the gas in the heating pipe, which is respectively connected to the anode pipeline temperature control display instrument and the cathode pipeline temperature control display instrument for temperature acquisition and control.

[0085] Furthermore, as Figure 1 and Figure 2 shown, the gas temperature monitoring module 6 includes: a battery temperature control module 65;

[0086] The battery temperature control module 65 is connected to the fuel cell under test and is used to control and monitor the temperature of the fuel cell under test, so as to keep the internal and external temperatures of the fuel cell under test consistent.

[0087] In this embodiment, the battery temperature control module 65 is an integrated module of a heating sheet or a heating rod (the heating sheet is attached to the surface of the battery, or the heating rod is placed inside the battery), a temperature sensor, and a controller. The heating sheet is placed on the outer surface of the battery and the temperature sensor is placed inside the battery. The internal temperature of the battery is collected by the temperature sensor. If the temperature is lower than the set value, the controller controls the heating sheet to heat the outer surface of the battery to ensure a constant temperature inside and outside the fuel cell and ensure the effective progress of the internal reaction of the fuel cell.

[0088] A standby temperature control display module 66 is arranged beside the battery temperature control module 65 for emergency standby when other temperature control modules fail.

[0089] Furthermore, as Figure 2 shown, the system includes:

[0090] A DC power supply 7 for supplying power to the anode solenoid valve 43, the cathode solenoid valve 44, the anode liquid level sensing control module (not shown in the figure), the cathode liquid level sensing control module (not shown in the figure), and the diaphragm pump 45;

[0091] A leakage protection module 8 for overloading and short - circuit protection of the system;

[0092] A terminal block 9 for connecting the DC power supply and the power - consuming modules to achieve power supply.

[0093] As Figure 3 shown, according to the working principle of the test system, each component is described as follows:

[0094] Hydrogen enters the test system through the anode inlet 21, and oxygen enters through the cathode inlet 22. In the connecting pipes, the flow rates of oxygen and hydrogen are controlled respectively by the corresponding anode flow controller 31 and cathode flow controller 32. The gas flow rates can be viewed and manually adjusted through the anode flow display 33 and cathode flow display 34 corresponding to the anode flow controller 31 and cathode flow controller 32;

[0095] Oxygen and hydrogen enter the corresponding anode humidifying tank 41 and cathode humidifying tank 42 for humidification. If the water levels in the anode humidifying tank 41 and cathode humidifying tank 42 are insufficient, it will be detected by the corresponding anode liquid level sensing control module and cathode liquid level sensing control module (not shown in the figure), and automatic water replenishment will be carried out through the anode solenoid valve 43, cathode solenoid valve 44 and diaphragm pump 45;

[0096] During the humidification process of oxygen and hydrogen in the anode humidifying tank 41 and cathode humidifying tank 42, they are also heated by the anode temperature control module and cathode temperature control module to ensure that the gases entering the fuel cell are in a constant temperature state. At the same time, the temperature can be displayed and manually controlled through the anode temperature display 61 and cathode temperature display 62 connected to the anode temperature control module and cathode temperature control module. Oxygen and hydrogen enter the fuel cell for reaction through the anode heating pipe 51 and cathode heating pipe 52 for heat preservation.

[0097] By controlling and recording the flow rates of oxygen and hydrogen, indirectly controlling the humidity of oxygen and hydrogen and recording the liquid levels, and controlling and recording the temperatures of oxygen and hydrogen, the electrical energy generated after the gases enter the fuel cell for reaction is used by the electrical energy device to collect data such as voltage, current, and power, which is used to evaluate the performance and reaction efficiency of the fuel cell.

[0098] The above are only some embodiments of the present utility model, and thus do not limit the protection scope of the present utility model. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A constant temperature humidification device for reacting gas used in fuel cell testing, characterized in that: include: A housing (1) for integrating and protecting the test system; An air inlet group (2) is arranged outside the shell (1) and is used to receive the gas to be reacted; A gas flow monitoring module (3) is arranged inside the housing (1) and connected to the gas inlet group (2) for monitoring and controlling the flow rate of the gas to be reacted; The gas humidity regulating module (4) is arranged inside the housing (1) and connected to the gas flow monitoring module (3) for monitoring and controlling the humidity of the gas to be reacted; The heating pipeline group (5) is arranged outside the housing (1); the air inlet end of the heating pipeline group (5) is connected to the gas humidity regulating module (4) for heating and maintaining the temperature of the gas to be reacted; the air outlet end of the heating pipeline group (5) is connected to the fuel cell to be tested for inputting the gas to be reacted into the fuel cell to be tested; The gas temperature monitoring module (6) is arranged inside the housing (1) and is respectively connected to the gas humidity regulating module (4) and the heating pipeline group (5) for monitoring and controlling the gas temperature inside the gas humidity regulating module (4) and the heating pipeline group (5) to ensure that the temperature of the gas to be reacted entering the fuel cell to be tested is constant.

2. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 1, characterized in that: The air inlet group (2) comprises: An anode gas inlet (21) for receiving hydrogen gas; A cathode gas inlet (22) for receiving oxygen; The anode air inlet (21) and the cathode air inlet (22) are quick-connect interfaces.

3. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 2, characterized in that: The gas flow monitoring module (3) comprises: An anode flow controller (31) is connected to the anode gas inlet (21) and is used to monitor and control the flow rate of hydrogen; The cathode flow controller (32) is connected to the cathode air inlet (22) and is used to monitor and control the flow rate of oxygen.

4. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 3, characterized in that: The anode flow controller (31) is connected to an anode flow display (33), and the anode flow display (33) is arranged outside the housing (1) and is used to control and display the hydrogen flow rate; The cathode flow controller (32) is connected to a cathode flow display (34), and the cathode flow display (34) is arranged outside the housing (1) and is used to control and display the oxygen flow rate.

5. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 3, characterized in that: The gas humidity adjustment module (4) comprises: an anode humidifying tank (41), connected to the anode flow controller (31), wherein an anode bubbler is arranged in the anode humidifying tank (41) for humidifying hydrogen; A cathode humidifying tank (42) is connected to the cathode flow controller (32), and a cathode bubbler is arranged in the cathode humidifying tank (42) for humidifying oxygen.

6. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 5, characterized in that: An anode liquid level sensor control module is arranged inside the anode humidifying tank (41) for monitoring and controlling the water level of the anode humidifying tank (41); A cathode liquid level sensor control module is arranged inside the cathode humidifying tank (42) for monitoring and controlling the water level of the cathode humidifying tank (42).

7. A constant temperature humidification device for reacted gas for fuel cell testing according to claim 6, characterized in that: The anode liquid level sensing control module is connected to an anode solenoid valve (43), the cathode liquid level sensing control module is connected to a cathode solenoid valve (44), the anode solenoid valve (43) and the cathode solenoid valve (44) are connected to a diaphragm pump (45), and the diaphragm pump (45) is connected to an external water tank via a water outlet (10) and a water inlet (11), and is used for controlling the anode solenoid valve (43) and / or the cathode solenoid valve (44) to open when the anode liquid level sensing control module and / or the cathode liquid level sensing control module detects that the liquid level in the corresponding anode humidifying tank (41) and / or the cathode humidifying tank (42) is lower than a preset value, so that the anode humidifying tank (41) and / or the cathode humidifying tank (42) obtains water from the water tank extracted by the diaphragm pump (45).

8. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 5, characterized in that: The gas temperature monitoring module (6) comprises: an anode temperature control module, arranged inside the anode humidification tank (41) and used for heating the hydrogen in the anode humidification tank (41); The anode temperature control module is connected to an anode temperature display (61) for controlling and displaying the temperature of the hydrogen in the anode humidification tank (41); A cathode temperature control module, arranged inside the cathode humidifying tank (42) and used for heating the oxygen in the cathode humidifying tank (42); The cathode temperature control module is connected to a cathode temperature display instrument (62) for controlling and displaying the temperature of oxygen in the cathode humidifying tank (42).

9. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 8, characterized in that: The heating pipeline group (5) comprises an anode heating pipeline (51) and a cathode heating pipeline (52); The gas temperature monitoring module (6) comprises: an anode pipeline temperature control display (63) and a cathode pipeline temperature control display (64); The anode heating pipe (51) is connected to an anode pipe temperature control and display instrument (63) for controlling and displaying the temperature of the anode heating pipe (51); The cathode heating pipeline (52) is connected to a cathode pipeline temperature control display instrument (64) for controlling and displaying the temperature of the cathode heating pipeline (52).

10. The constant temperature humidification device for reacted gas used for fuel cell testing according to claim 1, characterized in that: The gas temperature monitoring module (6) comprises: a battery temperature control module (65); The battery temperature control module (65) is connected to the fuel cell to be tested and is used to control and monitor the temperature of the fuel cell to be tested, so as to keep the internal and external temperatures of the fuel cell to be tested consistent.

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