KR101257788B1 - Power generation demonstration kit for fuel cell education - Google Patents

Abstract

The present invention relates to a fuel cell power generation demonstration kit for education, and more particularly, a fuel cell and a number that can be used for various educational and exhibition purposes in order to help understand the process of generating electric energy using the generation principle of hydrogen. The present invention relates to a fuel cell power generation demonstration kit using an electrolytic cell.
This educational fuel cell power generation demonstration kit includes: a water reservoir; A fuel supply unit configured to generate hydrogen gas by electrolyzing water supplied from the water storage tank; A hydrogen storage tank for storing the generated hydrogen gas and connected to the water storage tank and an open connection pipe; A fuel cell that receives hydrogen gas from the hydrogen storage tank and generates electrical energy; And an operating substrate that is operated by receiving electrical energy generated from the fuel cell.
According to the present invention, since the water storage tank and the hydrogen storage tank are provided, it is not necessary to continuously supply the external power supply to the fuel supply unit, which is an electric power receiving device, so that the principle of the fuel cell can be clearly explained.

Description

Power generation demonstration kit for fuel cell education

The present invention relates to a fuel cell power generation demonstration kit for education, and more particularly, a fuel cell and a number that can be used for various educational and exhibition purposes in order to help understand the process of generating electric energy using the generation principle of hydrogen. The present invention relates to a fuel cell power generation demonstration kit using an electrolytic cell.

Fuel cells are in the spotlight as next generation energy conversion devices with high power generation efficiency and eco-friendliness. The fuel cell is a polymer electrolyte membrane fuel cell (PEMFC), a phosphoric acid fuel cell (PAFC), or a molten carbonate fuel cell (MCFC) depending on the type of electrolyte used. And solid oxide fuel cells (SOFC). Depending on the type of fuel cell, the operating temperature, the material of the component, and the like vary.

Among them, the PEMFC can be operated from room temperature to 200 ° C., which is a low temperature as the operating temperature of the fuel cell, and can be applied as a power source for automobiles, households, portable devices, etc., because it can have a very high power density. The PEMFC is formed by stacking a plurality of bipolar plates (hereinafter, referred to as "separation plates") and a plurality of unit cells including a membrane-electrode assembly (MEA). And a line for supplying fuel such as hydrogen gas to the stack and a line for supplying air.

In this case, the membrane-electrode assembly includes an anode where the oxidation of the fuel occurs, a cathode where the reduction of the oxidant occurs, and an electrolyte membrane positioned between the anode, and the electrolyte membrane is ion conductive to transfer hydrogen ions generated from the anode to the cathode. Has an electronic insulating property for electronically insulating the anode and the cathode.

The operating mechanism of the fuel cell starts with oxidizing fuel at the anode to produce electrons and hydrogen ions through fuels such as hydrogen, natural gas and methanol. That is, the hydrogen ions generated at the anode move to the cathode through the electrolyte membrane, and the electrons generated at the anode are supplied to the external circuit through the conducting wire. The hydrogen ions that reach the cathode combine with electrons and oxygen that reach the cathode through an external circuit or oxygen in the air to generate water, and heat and electrical energy are generated in this process.

In order to easily understand the operation mechanism of such a fuel cell, it is basically important to understand the fuel cell basic configuration and organic coupling relationship and operating principle between each component. As an example, the best way for a trainee to understand the operating mechanism for a fuel cell is to begin with the generation of hydrogen used as fuel in the fuel cell, followed by a series of processes that derive electrical energy from the fuel cell using the fuel, hydrogen. It is important to have a comprehensive understanding of the principles by looking at them and handling the equipment yourself.

In the case of the existing laboratory training equipment, there are many examples of the implementation of the device and the independent technology for each element such as the experimental equipment for generating hydrogen, for example, the electrolytic cell and the equipment for generating electricity, for example, an experimental fuel cell. However, in using them for education, there is a problem in that the results of education are deteriorated because the processes from hydrogen generation to power generation and its application are independent so that they are not serialized.

Several approaches have been proposed to address this. Particularly, Korean Patent No. 10-0812757 (name of the invention: an educational power generation device using a fuel cell and a faucet tank) is mentioned.

However, in this case, since there is no separate device for storing hydrogen, the hydrogen consumption of the fuel cell is not completely consistent with the hydrogen production of the receiving cell, in particular, the hydrogen production of the receiving cell is greater than that of the fuel cell. In many states, blocking the fuel outlet of the fuel cell may cause a problem due to an increase in pressure therein. On the other hand, if the fuel outlet is opened to relieve the internal pressure, the hydrogen is not used to generate electricity due to the fuel consumption efficiency of the fuel cell.

In addition, in order to generate electricity by the fuel cell without having a hydrogen storage device, the fuel supply unit, which is a hydroelectrolyzer, must continue to operate, thereby shortening the life of the fuel supply unit.

In addition, there is a disadvantage that it is difficult to effectively explain the overall meaning of the power generation principle of the fuel cell using the hydrogen production and stored hydrogen when using an external system power source to continue to operate the electrolytic device.

In addition, this method has the disadvantage of high hydrogen waste and low energy efficiency.

The present invention has been proposed to solve the problems according to the prior art, and provides an educational fuel cell power generation demonstration kit that can explain the principle of a fuel cell without continuously supplying the external power supply to the fuel supply unit, which is a power supply device. For that purpose.

In addition, the present invention is equipped with a device for storing the produced hydrogen (H ₂ ) by the fuel cell power generation demonstration kit for education to reduce the amount of hydrogen discharged to the outside without being used for power generation by stably storing the remaining fuel consumed in the fuel cell To provide a different purpose.

In addition, another object of the present invention is to provide an education fuel cell power generation demonstration kit for extending the life of the fuel supply unit because the fuel supply unit does not need to continue to operate.

In addition, the present invention allows the system power source and any renewable energy sources (solar cell, wind power generator) to be selectively used for power supply for hydroelectricity, so that the system can be used even when the use of renewable energy sources is not easy. It is another object of the present invention to provide an educational fuel cell power generation demonstration kit that is easy to use and functionally easy to configure for effective education.

The present invention to achieve the above object, Provides educational fuel cell power generation demonstration kits. This educational fuel cell power generation demonstration kit includes: a water reservoir; A fuel supply unit configured to generate hydrogen gas by electrolyzing water supplied from the water storage tank; A hydrogen storage tank for storing the generated hydrogen gas and connected to the water storage tank and an open connection pipe; A fuel cell that receives hydrogen gas from the hydrogen storage tank and generates electrical energy; And an operating substrate that is operated by receiving electrical energy generated from the fuel cell.

The fuel cell may include a unit battery structure capable of disassembling / assembling to accommodate a fuel cell including a membrane-electrode assembly, a diffusion plate, and a current collecting plate therein; And a mounting hole for inserting and removing a unit cell structure, the mounting hole consisting of a transparent holder communicating with the outside through an inlet for fuel supply, so that the unit battery structure including the fuel cell can be disassembled / assembled in the holder. It is characterized by.

At this time, the unit cell structure, and the cylindrical cap nut to accommodate the fuel cell inside, having a through hole for the outside air inlet at the center of the closed end side, and has an O-ring for sealing on the outer edge thereof; A cylindrical cap bolt screwed with the cap nut to form a body; And a ring-shaped fixing plate interposed between the fuel cell and the cap bolt to closely fix the fuel cell to the inside of the cap nut.

Here, the fuel cell and the fixing plate are formed in the fuel cell and the fixing plate are in contact with each other on the same line when in close contact with each other, the fuel cell and the fixing plate is aligned in place in the cap nut through a fixed shaft through the alignment hole at the same time It is done.

Here, the width of the mounting hole is greater than the thickness of the unit battery structure, the mounting hole may be characterized in that the unit cell structure including a single fuel cell or a single number or at least two or more can be arranged in series.

Here, when one unit battery structure including a fuel cell is mounted in the mounting hole, an opening end of one side of the mounting hole is closed as a stopper having an O-ring installed at an outer edge thereof.

In this case, the fuel supply unit includes an electrolytic cell that accommodates the electrolyte therein and has an internal space separated into a hydrogen side water tank and an oxygen side water tank through a partition wall; And an electrolytic structure capable of disassembling / assembling, which is mounted on the partition wall and accommodates an electrolytic cell composed of an electrolyte membrane, a diffusion plate, and an electrode therein.

In addition, the fuel cell is characterized in that it further comprises a hydrogen gas discharge valve for controlling the hydrogen gas discharge.

Here, the electrolytic cell, the water storage tank and the hydrogen storage tank may be characterized in that the transparent material.

At this time, the electrolytic structure includes a cylindrical cap nut accommodating the electrolytic cell therein, having a plurality of through holes at the center of the closed end side, and having an O-ring at its outer edge for sealing; A cylindrical cap bolt screwed with the cap nut to form a body; And a fixing plate interposed between the electrolytic cell and the cap bolt to securely fix the electrolytic cell to the inside of the cap nut and having a plurality of through holes.

At this time, the operating base may be characterized in that the small electronic device operated by the input electrical energy or means for outputting the input electrical energy as light energy or means for outputting the input electrical energy as mechanical kinetic energy. .

At this time, the light energy output means, characterized in that the LED or light bulb.

At this time, the mechanical output means is characterized in that the motor having a rotation difference.

In addition, the hydrogen storage tank, the hydrogen reservoir opening and closing valve for discharging hydrogen gas at the top; And a connection valve for controlling hydrogen gas supplied to the fuel cell.

In this case, the water reservoir further comprises a water supply valve for controlling the water supplied to the fuel supply unit.

According to the present invention, since the water storage tank and the hydrogen storage tank are provided, it is not necessary to continuously supply the external power supply to the fuel supply unit, which is an electric power receiving device, so that the principle of the fuel cell can be clearly explained.

In addition, another effect of the present invention is to provide a water storage tank and a hydrogen storage tank to function as a buffer space for stably storing surplus hydrogen regardless of the hydrogen production amount of the electrolytic cell or the hydrogen consumption of the fuel cell. It is possible to stably reduce the amount of unused hydrogen discharged from the used fuel cell.

In addition, another effect of the present invention is that the fuel supply unit does not need to continue to operate when hydrogen for use is sufficiently stored due to the hydrogen storage tank, thereby extending the life of the fuel supply unit.

1 is a perspective view showing the overall configuration of a fuel cell power generation demonstration kit for education according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the fuel cell shown in FIG. 1. FIG.
3 is a cross-sectional view taken along the X-X 'axis of the fuel cell shown in FIG.
4 is a cross-sectional view of a fuel cell according to another embodiment of the present invention.
5 is an exploded perspective view of the electrolytic cell shown in FIG.
6 is a cross-sectional view taken along the line II ′ of the electrolytic cell shown in FIG. 5.
Figure 7 is a view showing a state in which the water height of the water reservoir and the hydrogen reservoir in the educational fuel cell power generation demonstration kit according to an embodiment of the present invention.
8 is a view showing a state in which the water height of the water reservoir and the hydrogen reservoir in the educational fuel cell power generation demonstration kit according to an embodiment of the present invention is different.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

Hereinafter, the educational development kit will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the overall configuration of a fuel cell power generation demonstration kit for training according to the present invention. As shown in the drawings, the present inventors' educational fuel cell power generation demonstration kit includes a fuel supply unit 2 for generating fuel, for example, hydrogen, a hydrogen storage tank 9 for storing hydrogen gas generated from the fuel supply unit 2, and hydrogen The water level rises due to the hydrogen gas pressure generated by the filling of the hydrogen gas in the reservoir 9, and the water reservoir 10 in equilibrium with the pressure in the hydrogen reservoir 9 and the hydrogen gas fuel provided from the hydrogen reservoir 9 are used. Fuel cell 1 for generating electrical energy and an operating substrate 3 for outputting electrical energy to external work for visual confirmation of electrical energy generated from fuel cell 1 are provided on one base 4. Structured, a series of processes from hydrogen generation to electrical energy generation and its application can be implemented in one integrated device. Of course, the power supply device 8 is configured to temporarily supply power to the fuel supply unit 2 for hydrogen generation.

Optionally, in addition to the power supply device 8 using commercial power, a power supply means composed of the first power terminal 11-1, the second power terminal 11-2 and the switch unit 11 may be configured. Of course, this power supply means is configured for connecting the power generated by solar cell energy, wind power generation and the like. Of course, the switch section 11 is connected to the fuel supply section 2 via the power supply line 11-3.

FIG. 2 is an exploded perspective view of the fuel cell shown in FIG. 1, and FIG. 3 is a cross-sectional view of the fuel cell shown in FIG. 2 taken along the line X-X '.

As shown in the figure, the fuel cell 1 applied to the present invention has a structure which is very advantageous in understanding the overall structure of the fuel cell to the user (trainee), since the unit components constituting the fuel cell 1 are mutually disassembled / assembled. It is.

2 to 3, the fuel cell 1 includes a unit cell structure 100 and a cradle 18 to which the unit cell structure 100 is detachably assembled. The unit cell structure 100 accommodates a fuel cell 16 that generates electrical energy by a chemical action of a fuel, for example, hydrogen and oxygen, provided from the outside, and the cradle 18 is the unit cell structure. (100) It has a mounting hole 180 for insertion and removal and may be transparent to see the inside. The fuel cell 16 is a unit cell having a general structure including a membrane-electrode assembly (MEA) 160, a diffusion plate 162, and a current collector plate 164.

Specifically, the unit cell structure 100 accommodated therein has a structure capable of disassembling / assembling. More specifically, the unit cell structure 100 has a cylindrical cap nut 12 accommodating the fuel cell 16 therein, and a cylindrical cap bolt screwed with the cap nut 12 to form a body. It is composed of (14) is possible to disassemble / assemble, the ring-shaped fixing plate 17 is interposed between the fuel cell (16) and the cap bolt (14) when the unit cell structure 100 when assembling the fuel cell ( 16) tightly fixed inside the cap nut (12).

In this case, the cap nut 12 is provided with a through hole 120 for inflow of outside air at the center of one side of the closed end thereof, and an O-ring 122 for sealing is installed at the outer edge thereof. The bolt 14 has a thread for screwing the cap nut 12 to the outer edge thereof.

The fuel cell 16 and the fixed plate 17 are provided with alignment holes 168 and 178 communicating with each other on the same line when they are in close contact with each other. A fixed shaft 175 is fitted into the alignment holes 168 and 178 communicating on the same line to align the fuel cell 16 and the fixed plate 17. That is, when assembling the unit cell structure 100, the fuel cell 16 and the fixing plate 17 positioned inside the cap nut 12 simultaneously pass through the alignment holes 168 and 178 formed therein, respectively. Can be aligned in place within the cap nut 12.

The cradle 18 has a mounting hole 180 for inserting and removing the unit cell structure 100 on one side. The mounting hole 180 is in communication with the outside through the inlet 182 extending from the upper surface of the cradle 18 to the inner surface of the mounting hole, the fuel supply connecting the fuel cell 1 and the fuel supply unit 2 to the inlet 182. One end of the hose 5 is connected via a hose coupler or fastener. Therefore, the fuel supplied to the fuel supply unit 2, for example, hydrogen gas, may be supplied into the mounting hole 180 through the fuel supply hose 5 and the cradle 18 inlet 182.

The width (width from left to right in the drawing) of the mounting hole 180 is sufficiently larger than the axial thickness of the unit cell structure 100 installed therein. Therefore, the mounting hole 180 may be installed up to one unit cell structure 100 according to the user (trainee) selection. That is, one or more of the unit battery structures 10 including the fuel cell 16 may be installed in the mounting hole 180.

As such, when the number of unit cell structures 100 installed in the mounting hole 180 can be arbitrarily adjusted, the total amount of power generated through the fuel cell 1 may vary according to the number of unit cell structures 100. Therefore, the user (trainee) during the experiment can change the number of installation of the unit cell structure 100 installed in the mounting hole 180 can observe the change in the amount of power accordingly.

As a result, it is possible to further improve the understanding and learning efficiency of the correlation between the power generation amount that depends on the structure of the fuel cell 1 and the number of fuel cell 16.

For example, when one unit cell structure 100 is mounted in the mounting hole 180 as shown in FIG. 3, one opening end of the mounting hole 180 is closed by using a stopper 19 having an O-ring installed at an outer edge thereof. Therefore, it is preferable to form a closed volume S of a predetermined volume in which fuel can move between the stopper 19 and the unit cell structure 100.

In addition, the hydrogen gas discharge valve 300 is placed at the lower end, and the hydrogen gas discharge valve 300 is closed while the fuel cell (1 in FIG. 1) is operated to the inlet 182 from the hydrogen storage tank (9 in FIG. 1). The incoming hydrogen gas is prevented from being discharged through the empty passageway so that it is not wasted.

Therefore, since hydrogen gas is not wasted, there is no waste of energy, thereby improving the efficiency of the fuel cell (1 in FIG. 1).

Unlike this, when two unit cell structures 100 are mounted as in the other use embodiment of FIG. 4, two unit cell structures 100 are arranged in series with a predetermined distance from the inlet 182. Preferably. In this case, unlike FIG. 3, a closure for closing (19 in FIG. 3) is not required.

That is, when two unit cell structures 100 are installed to face each other in both directions, the unit cell structures 100 form a sealed volume S having a predetermined volume through which fuel can move. There is no need to install a stopper (19 in FIG. 3).

5 is an exploded perspective view of the electrolytic cell shown in FIG. 1, and FIG. 6 is a cross-sectional view of the electrolytic cell shown in FIG. 5 taken along the line II ′.

As shown in FIG. 5, the fuel supply unit 2 applied to the present invention also has the same fuel cell 1 side as described above, and the unit components constituting the fuel supply unit 2 may be mutually disassembled / assembled. It is very advantageous for (trainee) to understand the overall structure of the fuel supply.

Specifically, referring to FIGS. 5 to 6, the fuel supply unit 2 may include an electrolytic cell 20 containing an electrolyte therein and an electrolytic cell that generates oxygen and hydrogen by electrolyzing the electrolyte filled in the electrolytic cell 20. The structure 22 is included.

Referring to FIG. 5, an electrolytic cell 20 is divided into a hydrogen-side water tank 20a and an oxygen-side water tank 20b based on the partition wall 200, and an electrolytic structure 22 includes the partition wall 200. Removably mounted on the) to accommodate the electrolytic cell 26 consisting of the electrolyte membrane 260 and the diffusion plate 262 therein. In this case, the diffusion plate 262 is electrically conductive and receives power for electrolysis from an external power line.

In other words, the external power supply device 8 and the fuel supply unit 2 are connected so that the fuel supply unit (2 in FIG. 1), which is the electrolytic device, can be initially operated. Of course, when a certain time elapses, even if the external power supply device 8 does not supply power to the fuel supply unit 2, the hydrogen gas stored in the hydrogen storage tank (9 of FIG. 1) is used, and thus the operating principle of the fuel cell is provided. It is possible to tell. This will be described with reference to FIGS. 7 and 8.

Of course, it is also possible to use the power generated by solar heat, wind power generation, etc., without using the external power supply 8 which supplies commercial power. To this end, the first power terminal 11-1, the second power terminal 11-2, the switch unit 11, and the power line 11-3 may be configured.

In other words, although the present embodiment uses a method of supplying external power for convenience of operation, in order to further establish the actual concept, a user (trainee) is provided by directly supplying power by using a solar cell or a wind power generator. It may also be able to broaden our appreciation for the overall understanding and need for renewable energy.

Referring to FIG. 5, the electrolytic cell 20 has a structure in which the hydrogen-side water tank 20a and the oxygen-side water tank 20b separated based on the partition wall 200 can be separated / assembled from each other. The upper surface of the side water tank 20a is provided with an outlet 202 for external discharge of hydrogen generated therefrom. The outlet 202 has a hydrogen gas connection hose (2-1 in FIG. 1) connecting the fuel supply unit (2 in FIG. 1) and the hydrogen storage tank (9 in FIG. 1) to the other end through a hose coupler or a fastener. Connected. Therefore, fuel generated from the hydrogen-side water tank 20a, for example, hydrogen gas, may be supplied to the hydrogen storage tank (9 in FIG. 1) via the hydrogen gas connection hose 2-1.

Unlike the conventional Korean Patent Registration No. 10-0812757, the barrier rib 200 contacting the bottom surface of the electrolytic cell 20 is not provided with a passage hole for water passage, and only the barrier rib 200 is formed. A diagram illustrating this is shown in FIG. 6. Therefore, the water which flowed in from the water storage tank (10 of FIG. 1) flows into the hydrogen side water tank 20a. Of course, the oxygen-side water tank 20b should also be supplied with an appropriate amount of water, which the user can visually check and if the water level is below a predetermined level, can supply water using a hose. Alternatively, it may be possible to automatically supply water to the oxygen-side water tank 20b by installing a water level measurement sensor (not shown) inside the oxygen-side water tank 20b.

Referring to FIG. 6, the electrolyzer 20 may be made of a transparent material such as tempered glass or transparent acrylic so that the inside thereof may be viewed. In this case, since the generation of bubble-shaped oxygen and hydrogen generated in the chemical and electrical reactions in the electrolytic cell 20 can be seen directly, it will be helpful for the user (trainee) to understand the electrolytic cell principle. Can be. In addition, a water storage tank (10 of FIG. 1) and a hydrogen storage tank (9 of FIG. 1) may be used in the same manner as the material of the electrolytic cell 20.

Referring to FIG. 5, the electrolytic structure 22 has a structure that can be disassembled / assembled similarly to the unit cell structure described above. Specifically, the electrolytic structure 22 has a cylindrical cap nut 24 accommodating the electrolytic cell 26 therein, and a cylindrical cap bolt 25 screwed with the cap nut 24 to form a body. It can be disassembled and assembled.

In addition, between the electrolytic cell 26 and the cap bolt 25, a fixing plate 27 having a plurality of through holes is interposed so that the electrolytic cell 26 is closely attached to the inside of the cap nut 24 when assembling the electrolytic structure 22. Fix it. At this time, the cap nut 24 is provided with an O-ring (242) for sealing on the outer edge, and the cap bolt 25 has a thread for screwing with the cap nut 24 on the outer edge thereof. Doing.

The electrolytic structure 22 installed in the electrolytic cell 20, specifically the electrolytic cell 26, receives a constant power from the outside for electrolysis. As an example, an AC power source 110V to 240V provided from the outside is converted into a DC power source for easy electrolysis through an external power supply device 8 provided on one side of the base 4 so that the diffusion plate of the electrolytic cell 26 is provided. 262 is configured to be supplied to both sides.

On the other hand, the operating substrate 3 outputs the electrical energy input to the external work for visual confirmation of the electrical energy generated in the fuel cell. As the operating substrate, a means for outputting the input electrical energy as light energy, for example, a light bulb (or LED) or a means for outputting as mechanical kinetic energy, for example, a motor having a rotation difference may be used. Of course, not limited to this, in addition to this, any configuration can be applied as long as the means (for example, a small electronic device such as MP3 or PMP) operated by the input electrical energy.

Reference numeral 6 denotes a power line for electrically connecting the fuel cell and the operating equipment, and 7 indicates a connection port provided in the middle of the power line.

Next will be described the operating principle of the present invention according to the above configuration. A diagram showing this is shown in FIGS. 7 and 8. That is, Figure 7 is a view showing a state in which the water height of the water reservoir and the hydrogen reservoir in the educational fuel cell power generation demonstration kit according to an embodiment of the present invention, Figure 8 is an educational fuel cell according to an embodiment of the present invention In the power generation demonstration kit, the water level of the water reservoir and the hydrogen reservoir are different.

Referring to FIG. 7, the fresh water 710 in the water reservoir 10 has the same height (h1 = h2) as the fresh water 710 in the hydrogen reservoir 9 without being operated. At this time, the atmospheric pressure 720 in the hydrogen storage tank 9 is assumed to be 1 atmosphere for easy understanding. Of course, this is a description for easy understanding of the present invention may not be the same amount of water in the water reservoir 10 and the hydrogen reservoir (9).

In this state, when power is applied to the fuel supply unit 2 using the external power supply device 8, the fuel supply unit 2 performs an electrolysis process to generate hydrogen gas. At this time, when the amount of water for electrolysis in the electrolytic bath is not enough, the water supply valve 10-3 may be opened to supply water.

Therefore, the water 710 fresh water in the water storage tank 10 is supplied to the fuel supply unit (2). To be precise, it flows into the hydrogen side bath (20a in FIG. 6). At this time, the water supply valve 10-3 is temporarily opened to supply water to the hydrogen-side water tank and is closed when the water level of the water tank reaches the full water level.

As a result, hydrogen (H ₂ ) and oxygen (O ₂ ) are generated in the fuel supply unit 2, and since the fuel supply unit 2 is made of a transparent material, a user (trainee) generates hydrogen and oxygen (bubble form). You can see it yourself.

The generated hydrogen gas flows into the hydrogen storage tank 9 and a hydrogen gas connection hose 2-1 connects the fuel supply unit 2 and the hydrogen storage tank 9 to this end. Of course, the oxygen generated in the oxygen-side water tank (20b of Figure 6) is discharged to the outside through the supplemental water inlet 204.

When the hydrogen gas generated in the hydrogen-side water tank (20a of FIG. 6) flows into the hydrogen storage tank 9, the level of the hydrogen storage tank is lowered by the amount of hydrogen introduced and the water level of the water storage tank 10 is increased. At this time, the pressure in the hydrogen reservoir (9) is a water pressure corresponding to the water level difference between the water reservoir (10) and the hydrogen reservoir (9) is not much different from the atmospheric pressure in the range of several tens of centimeters, which is a general kit production level.

On the other hand, the hydrogen gas stored in the hydrogen storage tank 9 is supplied to the fuel cell 1 through the fuel supply hose 9-3. That is, the hydrogen gas is provided to the fuel cell 1 side and used as a reaction fuel for generating electrical energy. At this time, the water of the water storage tank 10 and the hydrogen storage tank 9 are automatically communicated according to the amount of hydrogen consumed and the hydrogen supply amount of the electrolytic bath, so that hydrogen storage and supply of the hydrogen storage tank 9 are performed.

Fuel for reaction on the fuel cell side as described above, when hydrogen gas is supplied, chemical oxidation and reduction in the fuel cell 1 by the air supplied from the outside and the hydrogen gas (see arrows in FIGS. 3 and 4). Heat and electrical energy are generated by the reaction, among which electrical energy is input to the working base material 3 through the power supply line 6 and output from the working base material 3 to external work.

Of course, the upper end of the hydrogen reservoir (9) is provided with a connecting valve (9-2), the connecting valve (9-2) is connected to one end of the fuel supply hose (9-3). Therefore, the user can control the amount of hydrogen gas flowing out from the hydrogen storage tank 9 toward the fuel cell 1.

In addition, a hydrogen reservoir opening / closing valve 9-1 is further configured at the upper end of the hydrogen reservoir 9 so that the hydrogen pressure in the hydrogen reservoir 9 can be properly discharged.

On the other hand, the fuel cell 1 is also provided with a hydrogen gas discharge valve 300 on the hydrogen discharge side so that it can be blocked, there is no hydrogen waste and no energy waste. That is, it becomes possible to use all the generated hydrogen gas.

1. fuel cell 2. fuel supply unit
2-1 ... Hydrogen Gas Connection Hose
3 ... Operating Base 4 ... Base
5.Fuel supply hose 6 ... Power line
7.Connects 8 ... External power supply
9.Hydrogen reservoir 9-1 ... Hydrogen reservoir opening and closing valve
9-2 ... Connection valve
9-3 ... Fuel Supply Hose
10 ... Water Reservoir 10-1 ... Water Reservoir Opening Valve
10-2 ... Connectors 10-3 ... Water supply valve
10-4 ... Water supply hose 11 ... Switch section
11-1 ... 1st power terminal 11-2 ... 2nd power terminal
11-3 ... Power Line
16 fuel cell 18 stand
17,27 ... fixed plate 20 ... electrolyzer
20a ... hydrogen side water tank 20b ... oxygen side water tank
22 Electrolytic structure 26 Electrolytic cell
100 ... Unit cell structure 300 ... Hydrogen gas discharge valve

Claims (15)

Water reservoir;
A fuel supply unit configured to generate hydrogen gas by electrolyzing water supplied from the water storage tank;
A hydrogen storage tank for storing the generated hydrogen gas and connected to the water storage tank and an open connection pipe;
Hydrogen gas is supplied from the hydrogen storage tank to generate electrical energy,
A unit cell structure accommodating therein a fuel cell comprising a membrane-electrode assembly, a diffusion plate, and a current collector plate;
The unit cell structure is detachable, and includes a cradle that is formed with a mounting hole in communication with the outside for fuel supply,
The unit cell structure may be disassembled / assembled in the cradle, and the width of the mounting hole is greater than the thickness of the unit cell structure, so that one unit cell structure is provided in the mounting hole, or at least two or more unit cells. A fuel cell in which the structures are arranged in series; And
An operating substrate operating by receiving electrical energy generated from the fuel cell;
Educational fuel cell power generation kit comprising a. delete The method of claim 1,
The unit cell structure,
A cylindrical cap nut accommodating the fuel cell therein, having a through hole for inflow of outside air at the center of the closed end side, and having an O-ring at its outer edge for sealing;
A cylindrical cap bolt screwed with the cap nut to form a body;
And a ring-shaped fixing plate interposed between the fuel cell and the cap bolt to fix the fuel cell in close contact with the cap nut. The method of claim 3, wherein
The fuel cell and the fixing plate are formed in the fuel cell and the fixing plate are in contact with each other on the same line when in close contact with each other, the fuel cell and the fixing plate is aligned in place in the cap nut through a fixed shaft through the alignment hole at the same time Educational fuel cell power generation demonstration kit. delete The method of claim 1,
When one unit cell structure including a fuel cell is mounted in the mounting hole, the fuel cell power generation demonstration kit for education characterized in that one end of the mounting hole is closed as a stopper having an O-ring installed on the outer edge thereof. The method of claim 1,
The fuel supply unit,
An electrolytic cell accommodating the electrolyte therein and having an internal space separated into a hydrogen-side water tank and an oxygen-side water tank through a partition wall;
And an electrolyte structure mounted on the partition wall and capable of disassembling / assembling an electrolyte cell including an electrolyte membrane, a diffusion plate, and an electrode therein. The method of claim 7, wherein
The fuel cell is a fuel cell power generation demonstration kit for education characterized in that it further comprises a valve for controlling the discharge of hydrogen gas. The method of claim 7, wherein
The electrolytic cell, the water storage tank and the hydrogen storage tank are educational fuel cell power generation demonstration kit, characterized in that the transparent material. The method of claim 7, wherein
The electrolytic structure,
A cylindrical cap nut accommodating the electrolytic cell therein, having a plurality of through holes at the center of the closed end side, and having an O-ring at its outer edge for sealing;
A cylindrical cap bolt screwed with the cap nut to form a body;
And a fixed plate interposed between the electrolytic cell and the cap bolt to securely fix the electrolytic cell to the inside of the cap nut, and having a plurality of through holes. The method of claim 1,
The operating unit is a small electronic device operated by the input electrical energy or means for outputting the input electrical energy as light energy or means for outputting the input electrical energy as mechanical kinetic energy, the fuel cell power generation for education Demonstration Kit. The method of claim 11,
The light energy output means is an educational fuel cell power generation kit, characterized in that the LED or bulb. The method of claim 11,
The mechanical output means is a fuel cell power generation demonstration kit for education, characterized in that the motor having a rotor. The method of claim 1,
The hydrogen storage tank, the hydrogen gas discharge valve for discharging hydrogen gas at the top; And Educational fuel cell power generation demonstration kit comprising a connection valve for controlling the hydrogen gas supplied to the fuel cell. The method of claim 1,
The water storage tank further comprises a water supply valve for controlling the water supplied to the fuel supply educational fuel cell power generation demonstration kit.

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