Fuel cell vertical demonstration teaching aid

Abstract

The utility model discloses a vertical demonstration teaching aid of fuel cell, including installation support board, the side installation of installation support board has hydrogen delivery module, fuel cell electric pile, controller, battery, display screen and electronic load, hydrogen delivery module includes solid state hydrogen storage bottle and hydrogen delivery pipeline, and solid state hydrogen storage bottle sets up in the lower left of installation support board, and hydrogen delivery pipeline is connected between solid state hydrogen storage bottle and fuel cell electric pile, and controller sets up in the right side of solid state hydrogen storage bottle and is located in the lower left of fuel cell electric pile, and display screen sets up in the right side of fuel cell electric pile, and electronic load sets up in the below of display screen, and battery sets up between controller and electronic load, and fuel cell electric pile lower is equipped with exhaust pipeline, and the other side installation of installation support board has electric control box, and each device is electrically connected between. This teaching aid adopts vertical structure design, and each component layout is reasonable compact, saves the space, and is convenient for demonstration and observation, improves teaching effect and use safety.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, and in particular to a vertical demonstration teaching aid for fuel cells. Background Technology

[0002] In teaching fuel cell-related knowledge, demonstrations using teaching aids are often necessary to help students intuitively understand the working principles, structural components, and collaborative working methods of various modules. However, most existing fuel cell teaching aids suffer from unreasonable structural layouts and scattered modules, making them inconvenient for demonstration and explanation during teaching. Students also struggle to clearly observe the connections between components and the entire fuel cell workflow. Furthermore, some teaching aids lack adequate design in areas such as hydrogen delivery control, data display, and safety protection, resulting in poor teaching demonstration effects and failing to fully meet teaching needs. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a vertical demonstration teaching aid for fuel cells. The teaching aid adopts a vertical structure design, with reasonable and compact layout of each component, saving space and facilitating display and observation. At the same time, it can achieve precise delivery and stable control of hydrogen, improving teaching effectiveness and safety of use.

[0004] The objective of this utility model is achieved through the following technical solution: A vertical teaching aid for fuel cells includes a mounting support plate. From left to right, a hydrogen delivery module, a controller, a fuel cell stack, a battery, a display screen, and an electronic load are sequentially mounted on one side of the mounting support plate. The hydrogen delivery module includes a solid hydrogen storage tank and a hydrogen delivery pipeline. The solid hydrogen storage tank is located at the lower left of the mounting support plate. The hydrogen delivery pipeline connects the solid hydrogen storage tank and the fuel cell stack. The controller is located to the right of the solid hydrogen storage tank and at the lower left of the fuel cell stack. The display screen is located to the right of the fuel cell stack. The electronic load is located below the display screen and at the lower right of the fuel cell stack. The battery is located between the controller and the electronic load. An exhaust pipeline is provided on the fuel cell stack and is located below the fuel cell stack. An electrical control box is mounted on the other side of the mounting support plate. The hydrogen delivery module, controller, fuel cell stack, battery, display screen, electronic load, and electrical control box are electrically connected. Furthermore, the hydrogen delivery module also includes a needle valve, a pressure sensor, a first solenoid valve, a dust filter, and a hydrogen mass flow meter. These components are sequentially arranged along the hydrogen delivery pipeline. The needle valve allows for manual adjustment of hydrogen delivery; the pressure sensor monitors the hydrogen pressure in the pipeline in real time, ensuring the delivery pressure remains within a safe range; the first solenoid valve enables automatic on / off control of hydrogen delivery; the dust filter filters impurities from the hydrogen, preventing them from entering the fuel cell stack and affecting its performance and lifespan; and the hydrogen mass flow meter accurately measures the amount of hydrogen delivered, facilitating student observation and understanding of the relationship between hydrogen consumption and fuel cell power generation. Furthermore, the needle valve is positioned above the solid hydrogen storage cylinder, and the pressure sensor, first solenoid valve, dust filter, and hydrogen mass flow meter are sequentially arranged horizontally above the needle valve. This layout ensures that the components of the hydrogen delivery module are neatly arranged, facilitating installation and maintenance, and also promotes stable hydrogen flow within the hydrogen delivery pipeline. Furthermore, the hydrogen mass flow meter is located above the fuel cell stack, and the hydrogen delivery pipeline is connected to the lower end of the fuel cell stack. This arrangement allows hydrogen to enter from the lower end of the fuel cell stack, ensuring uniform distribution of hydrogen within the stack and improving the power generation efficiency of the fuel cell stack. Simultaneously, the hydrogen mass flow meter's location above the stack facilitates student observation of hydrogen flow data. Furthermore, the fuel cell stack is also connected to a voltage regulator module, which is located below the fuel cell stack. The voltage regulator module can stabilize the output voltage of the fuel cell stack, preventing voltage fluctuations from affecting subsequent electrical equipment (such as displays, electronic loads, etc.), and ensuring the stability and accuracy of the teaching experiment. Furthermore, the exhaust pipeline is located between the controller and the battery, and a second solenoid valve is installed on the exhaust pipeline. The voltage stabilizing module is located above the second solenoid valve. The second solenoid valve can control the opening and closing of the exhaust pipeline, which facilitates the control of the emission of fuel cell stack reaction products as needed during teaching experiments. The location of the voltage stabilizing module above the second solenoid valve makes the layout of each component more compact and reasonable. Furthermore, the display screen is also connected to a power switch, which is located below the display screen and above the electronic load. The power switch controls the power on and off of the display screen; its placement facilitates operation and also improves the overall layout between the display screen and the electronic load. The display screen clearly shows various parameters during the fuel cell's operation, helping students better understand the entire fuel cell's working process and principles.

[0005] Furthermore, the battery is also connected to a battery switch, which is located between the exhaust pipe and the battery. The battery switch controls the charging and discharging circuit of the battery, facilitating control of the battery's operating state during teaching experiments and ensuring the safety and controllability of the experimental process. Furthermore, a pressure reducing valve is installed at the outlet of the solid hydrogen storage cylinder. The pressure reducing valve can reduce the high-pressure hydrogen in the solid hydrogen storage cylinder to a pressure suitable for use in fuel cell stacks, preventing high-pressure hydrogen from directly entering the hydrogen transmission pipeline and causing damage to the pipeline and components, thus ensuring the safety and stability of the hydrogen transportation process.

[0006] The beneficial effects of this utility model are: This utility model's vertical fuel cell teaching aid integrates components such as the hydrogen delivery module, controller, fuel cell stack, battery, display screen, and electronic load onto a mounting support plate through a reasonable vertical layout. This not only saves space and facilitates placement and display in laboratories and classrooms, but also makes the connections between the components clear and easy to understand, which helps students observe and understand the working principle and structural composition of fuel cells. In terms of hydrogen delivery, by setting up components such as pressure reducing valves, needle valves, pressure sensors, first solenoid valves, dust filters, and hydrogen mass flow meters, the system achieves hydrogen pressure reduction, regulation, pressure monitoring, on / off control, filtration, and flow measurement, ensuring stable, accurate, and safe hydrogen delivery and avoiding the impact of hydrogen delivery problems on the normal operation of the fuel cell stack and the effectiveness of teaching experiments. In addition, the inclusion of components such as the electrical control box, voltage regulator module, power switch, and battery switch further enhances the controllability and stability of the teaching aid, meets the diverse experimental needs in the teaching process, helps improve students' interest and understanding of fuel cell technology, and has high practical teaching value. Attached Figure Description

[0007] Figure 1 This is a front structural diagram of the vertical demonstration teaching aid for fuel cells of this utility model; Figure 2 This is a side view of the vertical demonstration teaching aid for fuel cells of this utility model. Figure 3 This is a schematic diagram of the reverse side structure of the vertical demonstration teaching aid for fuel cells of this utility model; Figure label: 1-Install the support plate; 2-Hydrogen delivery module; 20-Solid hydrogen storage cylinder; 21-Pressure reducing valve; 22-Hydrogen delivery pipeline; 23-Needle valve; 24-Pressure sensor; 25-First solenoid valve; 26-Dust filter; 27-Hydrogen mass flow meter; 3-Controller; 4-Fuel cell stack; 41-Exhaust line; 42-Second solenoid valve; 5-Storage battery; 51-Battery switch; 6-Display screen; 61-Power switch; 7-Electronic load; 8-Voltage regulator module; 9-Electrical control box. Detailed Implementation

[0008] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0009] In the description of this utility model, it should be noted that the terms "vertical direction," "up," "down," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0010] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or a connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0011] like Figure 1 and Figure 2 As shown, this embodiment provides a vertical teaching aid for fuel cells, including a mounting support plate 1. From left to right, a hydrogen delivery module 2, a controller 3, a fuel cell stack 4, a storage battery 5, a display screen 6, and an electronic load 7 are installed on one side of the mounting support plate 1. An electrical control box 9 is installed on the other side of the mounting support plate 1. The controller 3 is an FDC controller.

[0012] The hydrogen delivery module 2 includes a solid hydrogen storage cylinder 20 and a hydrogen delivery pipeline 22. The solid hydrogen storage cylinder 20 is located at the lower left of the mounting support plate 1. The hydrogen delivery pipeline 22 is connected between the solid hydrogen storage cylinder 20 and the fuel cell stack 4. The controller 3 is located to the right of the solid hydrogen storage cylinder 20 and at the lower left of the fuel cell stack 4. The display screen 6 is located to the right of the fuel cell stack 4. The electronic load 7 is located below the display screen 6 and at the lower right of the fuel cell stack 4. The battery 5 is located between the controller 3 and the electronic load 7. The hydrogen delivery module 2, the controller 3, the fuel cell stack 4, the battery 5, the display screen 6, the electronic load 7, and the electrical control box 9 are electrically connected. The hydrogen delivery module 2 also includes a pressure reducing valve 21, a needle valve 23, a pressure sensor 24, a first solenoid valve 25, a dust filter 26, and a hydrogen mass flow meter 27. The pressure reducing valve 21 is located at the outlet of the solid hydrogen storage tank 20. The needle valve 23, pressure sensor 24, first solenoid valve 25, dust filter 26, and hydrogen mass flow meter 27 are sequentially arranged on the hydrogen delivery pipeline 22 along the hydrogen delivery direction. The needle valve 23 is located above the solid hydrogen storage tank 20. The pressure sensor 24, first solenoid valve 25, dust filter 26, and hydrogen mass flow meter 27 are sequentially arranged horizontally above the needle valve 23. The hydrogen mass flow meter 27 is located above the fuel cell stack 4, and the hydrogen delivery pipeline 22 is connected to the lower end of the fuel cell stack 4. The fuel cell stack 4 is equipped with an exhaust pipe 41, which is located below the fuel cell stack 4. The fuel cell stack 4 is also connected to a voltage regulator module 8, which is located below the fuel cell stack 4 and is a DC-DC voltage regulator module. The exhaust pipe 41 is located between the controller 3 and the battery 5, and a second solenoid valve 42 is installed on the exhaust pipe 41. The voltage regulator module 8 is located above the second solenoid valve 42.

[0013] Battery 5 is a lithium secondary battery. Battery 5 is connected to battery switch 51, which is located between exhaust pipe 41 and battery 5.

[0014] The display screen 6 is connected to a power switch 61, which is located below the display screen 6 and above the electronic load 7.

[0015] In this embodiment, the vertical fuel cell teaching aid is first used by turning on the display screen 6 via the power switch 61 and connecting the battery circuit 5 via the battery switch 51. The battery 5 provides initial power to the controller 3 and other components. After the controller 3 is started, it controls the first solenoid valve 25 to open. The hydrogen in the solid hydrogen storage tank 20 is depressurized by the pressure reducing valve 21 and then passes sequentially through the needle valve 23, pressure sensor 24, first solenoid valve 25, dust filter 26, and hydrogen mass flow meter 27. It is then transported to the lower end of the fuel cell stack 4 via the hydrogen pipeline 22 and enters the fuel cell stack 4 to undergo an electrochemical reaction to generate electricity. Pressure sensor 24 monitors the hydrogen pressure in the hydrogen pipeline 22 in real time and transmits the pressure data to controller 3. Controller 3 adjusts the opening of the first solenoid valve 25 based on the pressure data to ensure stable hydrogen pressure. Hydrogen mass flow meter 27 transmits hydrogen flow data to display screen 6 for students to observe changes in hydrogen flow. The electrical energy generated by fuel cell stack 4 is regulated by voltage regulator module 8. Part of this energy is used to power display screen 6, electronic load 7, and other devices, while the other part is used to charge battery 5. Water and unreacted gases produced by the electrochemical reaction in the fuel cell stack 4 are discharged through the exhaust pipe 41. The controller 3 can control the opening and closing of the second solenoid valve 42 according to experimental needs, thereby controlling the emission process. The electronic load 7 can simulate different electrical loads. Students can observe the voltage, current, power, and other data displayed on the screen 6 to understand the working performance of the fuel cell under different load conditions. The electrical control box 9 integrates relevant electrical control components to protect and control the electrical system of the entire teaching aid. This vertical fuel cell teaching aid has a compact structure and reasonable layout, which can clearly demonstrate the working process of the fuel cell and the function of each component. It provides stable and precise hydrogen delivery and has high safety, which can effectively meet the needs of teaching experiments and help students better understand and master the relevant knowledge of fuel cell technology.

[0016] The above description merely illustrates the preferred technical solution of this utility model, and while the description is relatively specific and detailed, it should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A vertical demonstration teaching aid for fuel cells, characterized in that: The system includes a mounting support plate. On one side of the mounting support plate, from left to right, are mounted a hydrogen delivery module, a controller, a fuel cell stack, a battery, a display screen, and an electronic load. The hydrogen delivery module includes a solid-state hydrogen storage tank and a hydrogen delivery pipeline. The solid-state hydrogen storage tank is located at the lower left of the mounting support plate. The hydrogen delivery pipeline connects the solid-state hydrogen storage tank and the fuel cell stack. The controller is located to the right of the solid-state hydrogen storage tank and at the lower left of the fuel cell stack. The display screen is located to the right of the fuel cell stack. The electronic load is located below the display screen and at the lower right of the fuel cell stack. The battery is located between the controller and the electronic load. The fuel cell stack has an exhaust pipeline located below it. An electrical control box is mounted on the other side of the mounting support plate. The hydrogen delivery module, controller, fuel cell stack, battery, display screen, electronic load, and electrical control box are electrically connected.

2. The vertical demonstration teaching aid for fuel cells according to claim 1, characterized in that: The hydrogen delivery module also includes a needle valve, a pressure sensor, a first solenoid valve, a dust filter, and a hydrogen mass flow meter, which are sequentially arranged along the hydrogen delivery direction on the hydrogen delivery pipeline.

3. The vertical demonstration teaching aid for fuel cells according to claim 2, characterized in that: The needle valve is positioned above the solid hydrogen storage cylinder, and the pressure sensor, the first solenoid valve, the dust filter, and the hydrogen mass flow meter are sequentially positioned above the needle valve in a horizontal direction.

4. The vertical demonstration teaching aid for fuel cells according to claim 2, characterized in that: The hydrogen mass flow meter is located above the fuel cell stack, and the hydrogen delivery pipeline is connected to the lower end of the fuel cell stack.

5. The vertical demonstration teaching aid for fuel cells according to claim 1, characterized in that: The fuel cell stack is also connected to a voltage regulator module, which is located below the fuel cell stack.

6. The vertical demonstration teaching aid for fuel cells according to claim 5, characterized in that: The exhaust pipe is located between the controller and the battery, and a second solenoid valve is installed on the exhaust pipe. The voltage stabilizing module is located above the second solenoid valve.

7. The vertical demonstration teaching aid for fuel cells according to claim 5, characterized in that: The display screen is also connected to a power switch, which is located below the display screen and above the electronic load.

8. The vertical demonstration teaching aid for fuel cells according to claim 5, characterized in that: The battery is also connected to a battery switch, which is located between the exhaust pipe and the battery.

9. The vertical demonstration teaching aid for fuel cells according to claim 1, characterized in that: A pressure reducing valve is also installed at the outlet of the solid hydrogen storage cylinder.

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