Irrigation equipment and water electrolysis hydrogen production devices

Abstract

This application relates to the field of electrolysis technology, and provides an irrigation device and a water electrolysis hydrogen production device thereof. The water electrolysis hydrogen production device includes: an electrode assembly comprising at least two stacked electrode plates with a cavity between them; a clamp comprising a fixing member, a first clamping plate, and a second clamping plate, the first and second clamping plates respectively clamping the electrode assembly from both sides of the stacking direction of each electrode plate, the fixing member being used to fix the first and second clamping plates; a water inlet hole formed on the first clamping plate, the electrode assembly having a first slot corresponding to and communicating with the water inlet hole, the first slot hole passing through at least a portion of the electrode plate and connecting to each cavity; and a water outlet hole formed on the second clamping plate, the electrode assembly having a second slot corresponding to and communicating with the water outlet hole, the second slot hole passing through at least a portion of the electrode plate and connecting to each cavity. The water electrolysis hydrogen production device provided by this application has advantages such as low cost and long service life.

Description

Technical Field

[0001] This application relates to the field of electrolysis technology, and in particular to an irrigation device and a water electrolysis hydrogen production device. Background Technology

[0002] Hydrogen production by water electrolysis refers to the process in which water molecules are dissociated under the influence of direct current to produce oxygen and hydrogen, which are then released from the anode and cathode plates of the electrolytic cell, respectively. Water electrolysis is widely used for the preparation of these two gases.

[0003] Hydrogen has strong reducing properties, and with the research and development of hydrogen biology, people have discovered that hydrogen also plays an important role in botany.

[0004] The article "Research Progress on the Botanical Effects of Hydrogen" (Journal of Nanjing Agricultural University, 2018, 41(3): 392-401, Shen Wenbiao, Su Jiuchang, Sun Xuejun) mentions that hydrogen can enhance soil fertility, and hydrogen-treated soil can promote crop growth and improve crop growth under adverse conditions. Therefore, Canadian scientists refer to hydrogen in soil, which plays a role similar to fertilizer, as "hydrogen fertilizer." The article demonstrates the principles and effects of hydrogen in regulating plant physiological processes.

[0005] Articles such as "Application Analysis of Hydrogen and Hydrogen-Rich Water in Agricultural Production" (Article No.: 1005-2690(2020)10-0102-01, Chinese Library Classification No.: S511.6, Liu Zhaoqi, Zhang Weiran, Han Xin, Bai Jingbo, College of Agricultural Engineering and Food Science, Shandong University of Technology) and "Application and Prospect of Hydrogen-Rich Water in Agricultural Production in Foshan, Guangdong" (Agricultural Engineering Technology·Comprehensive Edition, No. 8, 2019, Zhang Jing, Li Xiangni, Li Qiang, Yang Ruiyi, Shan Jiliang, Gao Zujiang, Foshan Agricultural Science Research Institute) point out that hydrogen-rich water can play an important role in plant growth and development, crop stress resistance, crop resistance to heavy metal stress, and post-harvest preservation and storage. Therefore, people have begun to gradually try to add water electrolysis hydrogen production devices to irrigation equipment to realize the preparation and irrigation of hydrogen-rich water.

[0006] The inventors of this application have discovered that existing water electrolysis hydrogen production devices generally suffer from complex structures, low production efficiency, and high costs. For example, in existing water electrolysis hydrogen production devices, proton exchange membranes are often placed between the electrode plates. However, as of the application date of this patent, the price of proton exchange membranes coated with precious metal catalysts suitable for water electrolysis hydrogen production is in the range of 13 to 14 yuan per square centimeter. Taking a hydrogen production rate of 100 ml / min as an example, the required proton exchange membrane area is approximately 6 to 9 cm². 2The range is acceptable for use in hydrogen-rich water cups for human consumption, but its use in agricultural irrigation is too costly and difficult to promote widely. Summary of the Invention

[0007] To solve, or at least partially solve, the above-mentioned technical problems, this application provides a water electrolysis hydrogen production device, comprising:

[0008] An electrode assembly includes at least two electrode sheets stacked on top of each other, with a cavity between the electrode sheets;

[0009] The fixture includes a fixing member, a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate respectively clamp the electrode assembly from both sides of the stacking direction of each electrode sheet of the electrode assembly. The fixing member is used to fix the first clamping plate and the second clamping plate.

[0010] A water inlet is provided on the first clamping plate. The electrode assembly is provided with a first slot that corresponds to and communicates with the water inlet. The first slot passes through at least part of the electrode sheet and connects to each chamber.

[0011] A water outlet is provided on the second clamping plate. The electrode assembly is provided with a second slot that corresponds to and communicates with the water outlet. The second slot passes through at least part of the electrode sheet and connects to each chamber.

[0012] Optionally, the first slot and the second slot are located on opposite sides of the electrode assembly in a direction perpendicular to the stacking direction, respectively.

[0013] Optionally, the electrode plates include an anode plate and a cathode plate, and the number of electrode plates is greater than or equal to three.

[0014] Optionally, the electrode assembly has a pressure relief slot in the middle that connects the various chambers.

[0015] Optionally, the pressure relief slot is prismatic, with the two opposite corners of the prismatic facing the first slot and the second slot, respectively.

[0016] Optionally, the outermost electrode sheet located in the stacking direction is an electrode sheet of the same pole, and several polarization sheets are also provided between adjacent electrode sheets. The polarization sheets are stacked along the stacking direction of the electrode sheets, and the polarization sheets divide the chamber into multiple sub-chambers. The thickness of the sub-chambers is between 0.2 mm and 0.3 mm.

[0017] Optionally, three polarization plates are provided between every two adjacent electrode plates.

[0018] Optionally, the electrode sheet is made of 304 stainless steel;

[0019] The electrode assembly can withstand an inlet water pressure greater than or equal to 1 MPa;

[0020] Silicone pads are placed between the electrode plates to form a cavity between them.

[0021] Optionally, the electrode assembly uses a constant current input for electrolysis, with the input current ranging from 1.3A to 1.8A and the voltage between the positive and negative electrodes ranging from 10V to 15V.

[0022] This application also provides an irrigation device, including a sprinkler irrigation mechanism, a water conveying device, and the aforementioned water electrolysis hydrogen production device; the sprinkler irrigation mechanism is connected to the water outlet of the water electrolysis hydrogen production device, and the water conveying device is connected to the water inlet of the water electrolysis hydrogen production device.

[0023] Optionally, the water supply device includes a booster pump, and the output water pressure of the booster pump is greater than or equal to 1 MPa.

[0024] Compared to existing hydrogen-rich water preparation devices equipped with proton exchange membranes, the water electrolysis hydrogen production device provided in this application does not require a proton exchange membrane, resulting in a very simple overall structure. Furthermore, the amount of hydrogen-rich water produced by this water electrolysis hydrogen production device can be controlled by simply stacking the number of electrode plates, thus meeting the needs of both large-scale irrigation and small-scale irrigation in experimental fields. Attached Figure Description

[0025] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0026] Figure 1 A three-dimensional schematic diagram of a water electrolysis hydrogen production device provided for an embodiment of this application;

[0027] Figure 2 A three-dimensional schematic diagram of a water electrolysis hydrogen production device provided for an embodiment of this application;

[0028] Figure 3 A three-dimensional schematic diagram of an electrode assembly for a water electrolysis hydrogen production device provided for an embodiment of this application;

[0029] Figure 4 A cross-sectional schematic diagram of an electrode assembly of a water electrolysis hydrogen production device provided for an embodiment of this application;

[0030] Figure 5 An electrode assembly for a water electrolysis hydrogen production device provided in this application, when using multiple stacked electrode sheets... Figure 4 A magnified view of a portion of region A;

[0031] Figure 6An electrode assembly for a water electrolysis hydrogen production device provided in this application includes polarization plates disposed between the electrode plates. Figure 4 A magnified view of a portion of region A;

[0032] Figure 7 The photograph provided in this application illustrates a water electrolysis hydrogen production device during a hydrogen production test. The photograph mainly shows the cutting of bubbles by the eddies generated under the hydrodynamic cavitation effect.

[0033] 1. Electrode assembly; 11. Electrode sheet; 12. Anode sheet; 13. Cathode sheet; 14. Polarizing sheet; 2. Clamp; 21. Fixture; 22. First clamping plate; 23. Second clamping plate; 4. Water inlet hole; 5. Water outlet hole; 6. Pressure relief groove hole; 7. First groove hole; 8. Second groove hole. Detailed Implementation

[0034] The technical solutions in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0035] First Implementation Method

[0036] As mentioned above, in the existing technology, water electrolysis hydrogen production devices using proton exchange membranes have the disadvantages of high cost and complex structure, making them difficult to apply in large-scale irrigation systems and hindering the promotion of hydrogen-rich water in hydrogen agriculture.

[0037] In view of this, a water electrolysis hydrogen production device is provided in the first embodiment of this application, see [link to relevant documentation]. Figures 1 to 5 As shown, it includes:

[0038] The electrode assembly 1 includes at least two electrode sheets 11 stacked on top of each other, with a cavity between the electrode sheets 11.

[0039] The clamp 2 includes a fixing member 21, a first clamping plate 22 and a second clamping plate 23. The first clamping plate 22 and the second clamping plate 23 respectively clamp the electrode assembly 1 from both sides of the stacking direction of each electrode sheet 11 of the electrode assembly 1. The fixing member 21 is used to fix the first clamping plate 22 and the second clamping plate 23.

[0040] Water inlet 4 is provided on the first clamping plate 22. The electrode assembly 1 is provided with a first slot 7 corresponding to and communicating with the water inlet 4. The first slot 7 passes through at least part of the electrode sheet 11 and connects to each chamber.

[0041] The water outlet 5 is opened on the second clamping plate 23. The electrode assembly 1 is provided with a second slot 8 that is corresponding to and communicates with the water outlet 5. The second slot 8 passes through at least part of the electrode plate 11 and connects to each chamber.

[0042] The fastener 21 used in this embodiment can be any mechanism capable of fixing the first clamping plate 22 and the second clamping plate 23, including but not limited to the bolt and nut structure shown in the figure. For example, the fastener 21 can also be a bolt, with threaded holes provided in the first clamping plate 22 and the second clamping plate 23, allowing the bolt to be directly inserted into the threaded holes. Alternatively, the fastener 21 can be a seamless steel pipe, and the first clamping plate 22 and the second clamping plate 23 can be welded together using the seamless steel pipe. Examples are numerous. Generally, it is recommended to use a fastener 21 with sufficient structural strength so that the first clamping plate 22 and the second clamping plate 23 can securely clamp the electrode assembly 1 under the impact of water flow. The bolt and nut structure shown in the figure also facilitates the replacement of the electrode assembly 1 and has the advantage of easy maintenance.

[0043] In this embodiment, the electrode sheet 11 includes an anode sheet 12 and a cathode sheet 13. A gasket made of silicone or other material is disposed between the electrode sheets 11 to form a chamber between them. In this structure, a uniform electric field exists between the stacked electrode sheets 11, which provides the potential difference required for water electrolysis. Water flows in through the inlet hole 4 and undergoes electrolysis as it passes through the chamber, producing hydrogen and oxygen. The generated hydrogen and oxygen are flushed away by the water flow and discharged from the outlet.

[0044] The height of the chamber, i.e., the spacing between the electrodes, can be controlled between 0.2 and 0.3 mm. This distance allows the electrode assembly 1 to have sufficient electrolytic current intensity without requiring excessive voltage, preventing arcing and breakdown. Moreover, the lower voltage prevents the generation of ozone during water electrolysis, thereby effectively preventing electrode oxidation and lifespan issues.

[0045] Electrode assembly 1 employs a constant current input method for electrolysis, with the input current ranging from 1.3A to 1.8A, particularly around 1.6A. The voltage between the positive and negative electrodes can accordingly range from 10V to 15V. Compared to constant voltage electrolysis, constant current electrolysis allows for better control of the hydrogen production rate, improving the controllability and safety of the water electrolysis hydrogen production device. Furthermore, after a period of use, internal corrosion of electrode assembly 1 increases resistance. If constant voltage electrolysis is used, the current decreases as resistance increases, leading to a gradual decrease in hydrogen production. Conversely, with constant current electrolysis, the voltage increases as resistance increases, only resulting in increased power consumption of the water electrolysis hydrogen production device, while the hydrogen production rate remains stable for a longer period.

[0046] The first slot 7 and the second slot 8 can be located on opposite sides of the electrode assembly 1, perpendicular to the stacking direction. By setting the first slot 7 with a large interval, the water can stay in the chamber for as long as possible, allowing the electrolysis reaction to be more complete.

[0047] This embodiment also provides an irrigation device, including a sprinkler irrigation mechanism, a water delivery device, and the aforementioned water electrolysis hydrogen production device. The sprinkler irrigation mechanism is connected to the water outlet 5 of the water electrolysis hydrogen production device, and the water delivery device is connected to the water inlet 4 of the water electrolysis hydrogen production device. The water delivery device can be any water pump in the prior art, and the sprinkler irrigation mechanism can be any nozzle, spray pipe, etc.

[0048] When water electrolysis hydrogen production devices are applied to irrigation equipment, the continuous flow of irrigation water enables the inflow of ordinary water and the outflow of hydrogen-rich water, providing excellent convenience.

[0049] It is worth mentioning that when the required irrigation water volume is small, only two electrode plates 11, one negative and one positive, can be set. However, in the embodiments of this application, the electrode plates 11 can be stacked sequentially in a negative-positive-negative-positive order, and the number of stacked plates can be selected according to the required irrigation water volume. Therefore, optionally, see [link to relevant documentation]. Figure 5 As shown, the electrode sheet 11 may include an anode sheet 12 and a cathode sheet 13, and the number of electrode sheets 11 is odd and greater than or equal to 3.

[0050] When the number of electrode sheets 11 is odd, the outermost electrode sheet 11 in the stacking direction is an electrode sheet 11 of the same pole. In this way, the electrode sheets 11 in the middle can be reused to reduce costs.

[0051] It is worth mentioning that when the electrode sheets 11 are stacked in the order of negative-positive-negative-positive, it is equivalent to connecting each group of electrode sheets 11 in parallel.

[0052] Because higher voltages can easily generate electric arcs, we want the cavity of the water electrolysis hydrogen production device to be as thin as possible, ideally within the range of 0.2 to 0.3 mm. However, under long-term electrolysis operation, impurities in the water can easily precipitate and clog such a thin cavity, leading to an increase in resistance.

[0053] When the resistance increases, under the premise of constant current input electrolysis, if each group of electrode plates 11 is connected in parallel, the current through that group of electrode plates 11 will decrease as the resistance increases, while the current in the bypass circuit connected in parallel with it and whose resistance has not increased will increase, thus playing a compensatory role. In this way, the rate of impurity precipitation in the cavity with increased resistance can be reduced, allowing the hydrogen production rate of each cavity in the water electrolysis hydrogen production device to reach a dynamic balance. This will significantly extend the service life of the water electrolysis hydrogen production device.

[0054] Based on the technical solution of this embodiment, this application also provides a specific assembly and usage process for irrigation equipment as follows:

[0055] 1. Connect the sprinkler irrigation mechanism to the water outlet 5 of the water electrolysis hydrogen production device, and connect the water conveying device to the water inlet 4 of the water electrolysis hydrogen production device to complete the assembly of the sprinkler irrigation mechanism.

[0056] 2. Water is supplied to the water electrolysis hydrogen production device through the water supply device, and then electricity is supplied to the water electrolysis hydrogen production device to start the preparation of hydrogen-rich water. The hydrogen-rich water will gush out from the sprinkler mechanism.

[0057] Compared to existing hydrogen-rich water preparation devices equipped with proton exchange membranes, the water electrolysis hydrogen production device provided in this application does not require a proton exchange membrane, resulting in a very simple overall structure. Furthermore, the amount of hydrogen-rich water produced by the water electrolysis hydrogen production device in this application can be controlled by simply stacking the number of electrode plates 11, thus meeting the needs of both large-scale irrigation and small-scale irrigation in experimental fields.

[0058] Alternatively, the electrode plate 11 can be made of 304 stainless steel. In existing technologies, water electrolysis hydrogen production devices often use graphite electrodes or electrodes plated with precious metals, such as platinum-plated electrodes, and rarely use iron electrodes. There are reasons for not using iron electrodes in existing technologies. This is because the hydrogen-rich water produced by existing technologies is mostly for drinking, and when using iron electrodes, ferrous ions will precipitate in the hydrogen-rich water, turning it green. This not only affects the taste but also raises concerns about the health effects of the produced water. Because existing water electrolysis hydrogen production devices have established this mindset, there is often a technological bias that iron electrodes are unsuitable as electrodes for producing hydrogen-rich water.

[0059] For the water electrolysis hydrogen production device provided in this application, since it relies on an electric field within an extremely thin cavity to produce hydrogen-rich water, the possibility of corrosion and blockage within the cavity must be considered. Furthermore, iron typically rusts upon contact with water, forming ferric ions (Fe3+). The rust formed by ferric ions has very low solubility, easily causing cavity blockage and preventing absorption by plants. As is well known to those skilled in the art, iron electrodes should be avoided as much as possible to prevent rust formation from ferric ions from corroding the electrodes.

[0060] The technical solution of this application overcomes this technical bias by using 304 stainless steel as the electrode. This has the following advantages:

[0061] First, using 304 stainless steel as the electrode is very inexpensive and suitable for the practical needs of large-scale, low-cost agricultural applications.

[0062] Secondly, compared to 316 or other types of stainless steel, 304 stainless steel has better electrical conductivity, making it suitable as an electrode.

[0063] Finally, and most importantly, by controlling the height of the chamber between 0.2 and 0.3 mm, this application enables the electrode assembly 1 to possess sufficient electrolytic current intensity without requiring excessive voltage. At a lower voltage, ferrous ions (Fe2+) are generated in the hydrogen-rich water, rather than ferric ions (Fe3+). Since the lower voltage prevents the generation of ozone during water electrolysis, the conversion of ferrous ions to ferric ions is prevented. Ultimately, the technical solution of this application will generate a large amount of ferrous ions in the hydrogen-rich water. This ferrous-rich hydrogen-rich water not only does not cause clogging, but also acts as an iron fertilizer, improving soil acidification and better promoting plant growth.

[0064] Furthermore, it is worth mentioning that by adjusting the thickness and material of the clamp 2, the electrode assembly 1 can withstand an inlet water pressure greater than or equal to 1 MPa. Accordingly, the water supply device can include a booster pump, and the output water pressure of the booster pump can even be greater than or equal to 1 MPa. Further optionally, the inlet water pressure that the electrode assembly 1 can withstand can be greater than or equal to 1.3 MPa, and the output water pressure of the booster pump can be equal to 1.3 MPa.

[0065] It's worth noting that using higher inlet water pressure offers several advantages. Specifically, higher pressure increases the solubility of hydrogen in water. Furthermore, for hydrogen-rich water, the size of the hydrogen bubbles is crucial; small, micro-nano-sized bubbles are better retained in the water and significantly influence the final effect of the hydrogen-rich water.

[0066] Based on the above principle, in the embodiments of this application, by setting a first clamping plate 22 and a second clamping plate 23 on the water electrolysis hydrogen production device, the force on the electrode assembly 1 is distributed by means of the clamping of the first clamping plate 22 and the second clamping plate 23, so that the water electrolysis hydrogen production device can withstand a fairly strong water pressure without the need for a very complicated fixing component 21.

[0067] See Figure 7 As shown, when the water pressure entering through inlet 4 reaches 1 MPa, or even 1.3 MPa or higher, the water flow rate is very fast. Therefore, it can carry away the bubbles before they grow into larger bubbles, keeping the average size of the bubbles in the irrigation water relatively small. Furthermore, under the strong water pressure, not only can most of the crystalline salts decomposed by hydrolysis be washed away, but also, due to the hydrodynamic cavitation effect, the water flow will form a strong vortex at the second slot 8 corresponding to the outlet (see details). Figure 7 (The white part inside the second slot 8). This vortex will thoroughly break up the hydrogen bubbles, thereby increasing the total amount of micro- and nano-sized hydrogen bubbles.

[0068] Second Implementation Method

[0069] The second embodiment of this application also proposes an irrigation device and a water electrolysis hydrogen production device. The water electrolysis hydrogen production device of the second embodiment is a further improvement on the water electrolysis hydrogen production device of the first embodiment. Its main improvement lies in that, in the second embodiment of this application, see [link to relevant documentation]. Figure 3 As shown, a pressure relief slot 6 is provided in the middle of the electrode assembly 1 to connect the various chambers.

[0070] It is easy to understand that when there are a large number of chambers, it is difficult to balance the pressure between them. This is because each chamber is only connected through a first slot 7 opposite to the inlet 4 and a second slot 8 opposite to the outlet 5. The water flow at both the first slot 7 and the second slot 8 is very turbulent, making it impossible to balance the pressure. Over time, this can easily cause the electrode sheet 11 to deform inside the electrode assembly 1.

[0071] The inventors of this application have discovered that when the electrode plates 11 are strictly parallel and tightly fitted, the electrolysis efficiency can be significantly improved. However, if the parallelism between them is insufficient, an electric arc will be generated between the electrode plates 11. This arc can easily lead to the breakdown and oxidation of the electrode plates 11, resulting in a significant increase in the resistance of the electrode plates 11. Since hydrogen production in water electrolysis devices is often controlled by a constant current, repeated arc breakdown will cause the system to require increasingly higher voltages over time. This increase in voltage, in turn, further exacerbates the arc breakdown problem.

[0072] Therefore, the pressure relief slot 6 can balance the pressure between the chambers, prevent the electrode plate 11 from deforming, and extend the service life of the water electrolysis hydrogen production device.

[0073] Alternatively, the pressure relief slot 6 is prismatic, with its two opposite corners facing the first slot 7 and the second slot 8, respectively. When the pressure relief slot 6 is prismatic and its sharp corners face the two slots, it can cut the water flow impacting the pressure relief slot 6. After the water flow is diverted, it can better impact each other in the second slot 8, thereby increasing the intensity of the eddy. In addition, some large bubbles pushed to the pressure relief slot 6 can also be cut, so this shape of the pressure relief slot 6 can also promote the miniaturization of hydrogen bubbles.

[0074] Third Implementation Method

[0075] The third embodiment of this application also proposes an irrigation device and a water electrolysis hydrogen production device. The water electrolysis hydrogen production device of the third embodiment is a further improvement on the water electrolysis hydrogen production device of the first or second embodiment. Its main improvement lies in that, in the third embodiment of this application, see [link to relevant documentation]. Figure 6 As shown, several polarization plates 14 are also provided between adjacent electrode plates 11.

[0076] Specifically, the polarizing plates 14 are stacked along the stacking direction of the electrode plates 11, and the polarizing plates 14 divide the cavity into multiple sub-cavities. The thickness of the sub-cavities is between 0.2 mm and 0.3 mm, that is, the spacing between the polarizing plates 14 and the spacing between the polarizing plates 14 and the electrode plates 11 are both between 0.2 mm and 0.3 mm.

[0077] When electrode 11 is energized, the sidewall of polarization plate 14 will be polarized by the electrode 11 it faces, and a potential difference will also be generated between the chambers, so that polarization plate 14 can also participate in the electrolysis of water. By setting polarization plate 14, the number of electrode 11 can be reduced, making wiring and electrical control simpler.

[0078] It is worth mentioning that the chamber formed by the polarization plate 14 and the chamber formed by the electrode plate 11 have the same function, so the various technical solutions of the second embodiment can also be adopted to achieve the corresponding technical effects. For example, pressure relief slots 6 can also be formed on the polarization plate 14.

[0079] Optionally, three polarization plates 14 can be provided between every two adjacent electrode plates 11. The three polarization plates 14 can achieve a suitable voltage step, achieving an optimal balance between cost and efficiency.

[0080] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A water electrolysis hydrogen generation device, characterized by, The application relates to a water electrolysis hydrogen generator, which comprises the following parts: an electrode assembly, which comprises at least two electrode sheets stacked on each other, the electrode sheets are made of 304 stainless steel, and cavities are arranged between the electrode sheets; a plurality of polarization sheets are arranged between adjacent electrode sheets and stacked along the stacking direction of the electrode sheets, the polarization sheets divide the cavities into a plurality of sub-cavities, and the thickness of the sub-cavities is between 0.2 mm and 0.3 mm; a clamp, which comprises a fixing member, a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate clamp the electrode assembly from both sides of the stacking direction of the electrode sheets, and the fixing member is used for fixedly connecting the first clamping plate and the second clamping plate; a water inlet hole arranged on the first clamping plate, and a first slot hole arranged on the electrode assembly and corresponding to the water inlet hole, the first slot hole penetrates at least part of the electrode sheets and connects the cavities; a water outlet hole arranged on the second clamping plate, and a second slot hole arranged on the electrode assembly and corresponding to the water outlet hole, the second slot hole penetrates at least part of the electrode sheets and connects the cavities; the water inlet pressure that can be borne by the electrode assembly is greater than or equal to 1 Mpa.

2. The water electrolysis hydrogen generation device according to claim 1, characterized by, the first slot hole and the second slot hole are located on the two sides of the electrode assembly away from each other in a direction perpendicular to the stacking direction.

3. The water electrolysis hydrogen generation device according to claim 1, characterized by, the electrode sheets comprise anode sheets and cathode sheets, and the number of the electrode sheets is greater than or equal to 3.

4. The water electrolysis hydrogen generation device according to claim 3, characterized by, a pressure relief slot hole is arranged in the middle of the electrode assembly and communicates with the cavities.

5. The water electrolysis hydrogen generation device according to claim 4, characterized by, the pressure relief slot hole is prismatic, and the two opposite angles of the prismatic shape are respectively directed to the first slot hole and the second slot hole.

6. The water electrolysis hydrogen generation device according to claim 3, characterized by, the electrode sheets located on the outermost sides in the stacking direction are electrode sheets of the same polarity.

7. The water electrolysis hydrogen generation device according to claim 6, characterized by, three polarization sheets are arranged between each two adjacent electrode sheets.

8. The water electrolysis hydrogen generation device according to claim 1, characterized by, silicone gaskets are arranged between the electrode sheets to form the cavities between the electrode sheets.

9. The water electrolysis hydrogen generation device according to claim 1, characterized by, the electrode assembly is electrolyzed in a constant current input mode, the input current is in the range of 1.3 A to 1.8 A, and the voltage of the anode and the cathode is between 10 V and 15 V.

10. An irrigation apparatus, characterized in that the water electrolysis hydrogen generator is used in a sprinkling irrigation mechanism and a water conveying device. the sprinkling irrigation mechanism is connected to the water outlet hole of the water electrolysis hydrogen generator, and the water conveying device is connected to the water inlet hole of the water electrolysis hydrogen generator.

11. The irrigation apparatus of claim 10, wherein, the water conveying device comprises a booster water pump, and the output water pressure of the booster water pump is greater than or equal to 1 Mpa.

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