A dynamically regulated water electrolysis hydrogen production device

Abstract

This invention relates to the field of water electrolysis for hydrogen production technology, and discloses a dynamically adjustable water electrolysis hydrogen production device to solve the problems in the prior art where bubble adhesion to the electrode affects electrolysis efficiency and liquid flow scouring easily carries bubbles, hindering ion migration. The device includes an electrolyzer body, a diaphragm, and electrode mounting plates with drive components on both sides. The electrode mounting plates are provided with slots and water-collecting components. The water-collecting components include flexible sides, a rigid bottom side, and a unidirectional rotating component. The flexible sides have flushing ports and are also equipped with locking components and gas collecting components. When the drive components drive the electrode mounting plates to reciprocate, the liquid in the replenishment chamber is directed to flush away bubbles through the flushing ports, and the water-collecting components form a dedicated channel to guide the bubbles to the gas collecting components. During the return stroke, the locking components maintain the channel shape, and the flexible sides adhere to the electrodes to squeeze residual bubbles a second time. This device avoids bubble entrainment, reduces gas loss, ensures electrolyte mass transfer, improves electrolysis efficiency and stability, and reduces maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of water electrolysis for hydrogen production technology, and more particularly to a water electrolysis device for hydrogen production with dynamic control. Background Technology

[0002] An electrolytic water hydrogen production unit is a complete set of equipment that uses external electrical energy to decompose water molecules into hydrogen and oxygen based on the principle of electrolysis. Its core components typically include an electrolytic cell containing an anode, cathode, ion exchange or conduction medium, a DC power supply system, an electrolyte, a gas separation and purification system, and a control system responsible for operation monitoring and parameter adjustment. During operation, the unit first introduces suitable raw water into the electrolytic cell, then applies DC electricity through the power system, causing water molecules to undergo electrochemical reactions at the electrodes. A reduction reaction occurs at the cathode to produce hydrogen, and an oxidation reaction occurs at the anode to produce oxygen. The two gases are separated by the separation system. The hydrogen is further dried and purified to improve its purity before being output as a product, while the oxygen can be recycled or discharged in compliance with regulations, depending on demand.

[0003] Chinese patent CN120556057A discloses an anion exchange membrane electrolyzer for hydrogen production via water electrolysis. The electrolyzer includes a tank body, an alkali-resistant anode electrode, an alkali-resistant cathode electrode, an anion exchange membrane, and a driving mechanism disposed within the tank body. The driving mechanism includes a dual-axis motor, a swinging assembly, and a reciprocating motion assembly. The swinging assembly enables the alkali-resistant anode electrode to swing, and the reciprocating motion assembly enables the alkali-resistant cathode electrode to reciprocate. In this application, the dual-axis motor drives the swinging assembly and the reciprocating motion assembly simultaneously, causing the alkali-resistant anode electrode to swing and the alkali-resistant cathode electrode to reciprocate. This causes flow and disturbance in the electrolyte near the electrodes. This dynamic change breaks the concentration boundary layer of the electrolyte near the electrode surface, accelerating the migration of ions from the electrolyte to the electrode surface and the diffusion of reaction products from the electrode surface, thereby improving the mass transfer rate and enabling the electrolysis reaction to proceed more efficiently.

[0004] Regarding the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: In the process of hydrogen production by water electrolysis, bubbles are generated at the interface between the electrode plate and the electrolyte. Some bubbles adhere to the surface of the electrode plate, affecting the electrolysis efficiency. Existing technologies generally break the adhesion of bubbles to the surface of the electrode plate directly through liquid flow, so that the bubbles detach. However, some small bubbles have low buoyancy and are easily entrained into the interior of the electrolyte by the entrainment effect of the liquid flow, even close to the membrane, thus hindering the migration path of ions. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantage that bubbles that are difficult to remove from the electrode plate will affect the electrolysis efficiency, and that using only liquid flow to flush the bubbles will easily entrain them into the electrolyte and hinder ion migration. To this end, we propose an electrolytic water hydrogen production device with dynamic control.

[0006] To achieve the above objectives, this application adopts the following technical solution: a water electrolysis hydrogen production device with dynamic control, comprising: an electrolysis cell body, a diaphragm installed in the middle of the interior of the electrolysis cell body, two sets of electrode mounting plates symmetrically installed on both sides of the diaphragm, a driving assembly installed at the bottom of the electrode mounting plates, and the driving assembly being used to drive the electrode mounting plates to reciprocate inside the electrolysis cell body, a drain port being opened at the bottom of the electrolysis cell body, and a liquid outlet pipe being connected to the bottom of the drain port, and a replenishment tank being fixedly connected to the output end of the liquid outlet pipe, and a replenishment pipe being connected to the top of the replenishment tank, and the output end of the replenishment pipe being connected to the electrolysis cell body;

[0007] Electrode strips are fixedly connected to the sides of the electrode mounting plate. The inside of the electrode mounting plate has slots that are staggered with the electrode strips. A water-collecting assembly is installed inside the slots. The water-collecting assembly includes two sets of symmetrically arranged flexible sides. One set of flexible sides is rotatably connected to a first rigid bottom edge, and the other set of flexible sides is rotatably connected to a second rigid bottom edge. A one-way rotation assembly is installed between the first and second rigid bottom edges. The one-way rotation assembly is used to limit the bending direction between the first and second rigid bottom edges. Several flushing ports are evenly spaced inside the flexible sides.

[0008] Preferably, the flexible side is fixedly connected to the side of the groove, and a one-way baffle is fixedly connected to the side of the flushing port, and the coverage area of ​​the one-way baffle is larger than the opening area of ​​the flushing port.

[0009] Preferably, the unidirectional rotation component includes a first limiting strip, which is fixedly connected to the side of the second rigid bottom edge. A flexible connecting strip is fixedly connected to the side of the first limiting strip away from the second rigid bottom edge, and the side of the flexible connecting strip away from the first limiting strip is fixedly connected to the first rigid bottom edge.

[0010] Preferably, a second limiting strip is fixedly connected to the side of the first rigid bottom edge. The second limiting strip is disposed on the inner wall of the first limiting strip and the flexible connecting strip, and the second limiting strip, the first limiting strip, and the flexible connecting strip are all clearance fit.

[0011] Preferably, two sets of locking components are symmetrically arranged at the upper and lower ends of the first limiting strip. The locking components include locking blocks, which are slidably connected to the ends of the first limiting strip.

[0012] Preferably, the locking assembly further includes a latch, which is located at the end of the second limiting strip. The portion of the locking block extending out of the first limiting strip is inserted into the latch, and the locking block and the latch are slidably connected.

[0013] Preferably, the top of the locking block is provided with a spring, one end of the spring near the slot is fixedly connected to the top of the locking block, and the other end of the spring is fixedly connected to the top of the first limiting strip. The locking assembly also includes a spring plate, which is fixedly connected to the inside of the slot.

[0014] Preferably, the top of the water-collecting component is provided with a gas-collecting component, the gas-collecting component includes a gas-collecting chamber, one end of the gas-collecting chamber is fixedly connected to the side of the electrode mounting plate, and the other end of the gas-collecting chamber is fixedly connected to a connecting pipe.

[0015] Preferably, the cross-sectional shape of the gas collecting chamber is set as a triangle, and the top of the gas collecting chamber is fixedly connected to an air outlet pipe, with the bottom end of the air outlet pipe inserted at the apex of the triangle.

[0016] Preferably, the cross-sectional shape of the connecting pipe is U-shaped, one end of the connecting pipe is connected to the gas collecting chamber, and the other end of the connecting pipe is provided with a liquid outlet.

[0017] The technical effects and advantages of this invention are as follows:

[0018] In this invention, when the driving component drives the electrode mounting plate to reciprocate, the liquid in the replenishment chamber is directed to flush the surface of the electrode strip through the flushing port of the water-collecting component, quickly removing most of the easily detachable air bubbles. Simultaneously, the isosceles trapezoidal protrusions formed by the water-collecting component create dedicated upper and lower channels, confining the detached air bubbles within these channels and allowing them to flow upwards to the gas-collecting component. This completely avoids the problem of air bubbles being trapped inside the electrolyte and hindering ion migration, as is common in traditional flushing methods. This reduces gas residence and dissolution losses in the electrolyte, ensures continuous mass transfer in the electrolyte, prevents voltage increases caused by air bubbles covering the electrode active area, and significantly improves electrolysis energy efficiency.

[0019] In this invention, the locking component maintains the shape of the upper and lower channels formed by the water-collecting components during the return stroke of the electrode mounting plate, so that the front side of the channel does not open during the compression process, and the flexible side gradually fits the electrode strip as the channel is flattened. This performs secondary physical compression on the tiny and stubborn air bubbles remaining after the liquid flow washes away the bubbles, thoroughly removing the air bubbles in the blind area on the electrode surface. The overall design avoids the defects of incomplete flushing by a single liquid flow and low efficiency of a single compression, while ensuring the continuity and stability of the electrolysis reaction and reducing the maintenance cost of the device. Attached Figure Description

[0020] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0021] Figure 1 This is a three-dimensional structural diagram of the entire invention from the front view;

[0022] Figure 2 This is a three-dimensional structural diagram of the bottom structure of the electrolytic cell of the present invention;

[0023] Figure 3 This is a three-dimensional structural diagram of the internal structure of the electrolytic cell of the present invention;

[0024] Figure 4 This is a three-dimensional structural diagram of the electrode mounting plate portion of the present invention;

[0025] Figure 5 This is a top view of the three-dimensional structure of the water-collecting component and electrode mounting plate of the present invention;

[0026] Figure 6 This is a three-dimensional structural diagram of the water-collecting component of the present invention with the portion extending out of the slot;

[0027] Figure 7 This is a three-dimensional structural diagram of the water-collecting component of the present invention in the state of partially retracting the slot.

[0028] Figure 8 This is an exploded structural diagram of the unidirectional rotation component of the present invention;

[0029] Figure 9 This is an exploded view of the locking component of the present invention;

[0030] Figure 10 This is a cross-sectional structural diagram of the gas collection component of the present invention.

[0031] Legend: 1. Electrolytic cell body; 2. Diaphragm; 3. Electrode mounting plate; 4. Electrode strip; 5. Slot opening; 6. Water collection assembly; 7. One-way rotation assembly; 8. Locking assembly; 9. Gas collection assembly; 10. Drive assembly; 11. Drain outlet; 12. Liquid outlet pipe; 13. Replenishment tank; 14. Replenishment pipe; 601. Flexible side; 602. First rigid bottom edge; 603. Second rigid bottom edge; 604. Flushing port; 605. One-way baffle; 701. First limiting strip; 702. Flexible connecting strip; 703. Second limiting strip; 801. Locking block; 802. Bay opening; 803. Spring; 804. Spring leaf; 901. Connecting pipe; 902. Gas collection chamber; 903. Liquid outlet; 904. Gas outlet pipe. Detailed Implementation

[0032] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0033] Reference Figure 1 and Figure 3 As shown, the present invention provides a technical solution: a dynamically adjustable water electrolysis hydrogen production device, comprising: an electrolysis cell 1, a diaphragm 2 installed in the middle of the electrolysis cell 1, two sets of electrode mounting plates 3 symmetrically installed on both sides of the diaphragm 2, and electrode strips 4 fixedly connected to the sides of the electrode mounting plates 3, wherein the electrode strips 4 on the sides of one set of electrode mounting plates 3 are cathodes, and the electrode strips 4 on the sides of the other set of electrode mounting plates 3 are anodes. During operation, direct current is applied by an external power source, causing the electrode strips 4 at the cathode to undergo a reduction reaction to produce hydrogen, and the electrode strips 4 at the anode to undergo an oxidation reaction to produce oxygen.

[0034] The core of the electrolysis reaction is the electrode surface. Both gases are generated and released directly on their respective electrode surfaces. Due to interfacial forces, a certain surface tension forms between the electrode surface and the bubbles, making it difficult for the bubbles to detach. Especially for tiny bubbles with weak buoyancy, insufficient buoyancy to overcome the adsorption force on the electrode surface, they easily adhere to the plate. First, the adhered bubbles cover part of the electrode's active area, reducing the effective contact between the electrode and the electrolyte, obstructing electron transfer paths, increasing the actual operating voltage of the electrode, consuming additional electrical energy, and reducing the energy efficiency of the electrolysis device. Second, the adhered bubbles affect the continuity of the reaction. A large number of adhered bubbles may form a gas film on the electrode surface, hindering the transport of electrolyte ions from the electrolyzed water to the electrode's active sites, leading to a decrease in the reaction rate, or even local reaction interruption. Finally, it accelerates electrode wear. Long-term bubble adhesion may cause uneven local current density on the electrode surface. In some areas, excessive current concentration can easily lead to corrosion or shedding of active materials, shortening the electrode's lifespan and increasing the device's maintenance costs. To address the series of adverse effects caused by bubble adhesion on the electrode surface, this application makes the following improvements:

[0035] Please see Figure 2 , Figure 3 and Figure 4As shown, a drive assembly 10 is installed at the bottom of the electrode mounting plate 3, and the drive assembly 10 is used to move the electrode mounting plate 3 back and forth inside the electrolytic cell 1. The electrode mounting plate 3 has a slot 5 inside, and the slot 5 is staggered with the electrode strip 4. A drain port 11 is opened at the bottom of the electrolytic cell 1, and the bottom of the drain port 11 is connected to a liquid outlet pipe 12. The output end of the liquid outlet pipe 12 is fixedly connected to a replenishment tank 13. The top of the replenishment tank 13 is connected to a replenishment pipe 14, and the output end of the replenishment pipe 14 is connected to the electrolytic cell 1. The electrode mounting plate 3 divides the space between the diaphragm 2 and the electrolytic cell 1 into two chambers: an electrolysis chamber and a replenishment chamber. The chamber closer to the diaphragm 2 is the electrolysis chamber, and the other side is the replenishment chamber. When the electrode mounting plate 3 moves towards the diaphragm 2, the space of the electrolysis chamber shrinks, pushing the water in this space from the drain port 11 and through the outlet pipe 12 back into the replenishment tank 13. The replenishment tank 13 stores a prepared electrolyte solution for replenishing the electrolytic cell 1. The replenishment tank 13 is equipped with an integrated online conductivity sensor and an automatic mixing module. When the electrolysis reaction causes the electrolyte concentration to increase, the sensor triggers the mixing module to add deionized water; when the concentration decreases, solids are added. The electrolyte concentration in the replenishment tank 13 is maintained within the optimal range of 28%-32%; and before the electrolyte discharged from the drain port 11 enters the replenishment tank 13 through the outlet pipe 12, it is first removed by passing through an ion exchange resin column to remove electrolysis byproducts, such as carbonates, to avoid the accumulation of impurities that may affect the accuracy of concentration detection.

[0036] The replenishment tank 13 contains prepared electrolyte for replenishing the electrolytic cell 1. At the same time, the space inside the replenishment chamber increases. The electrolyte inside the electrolytic cell 1 enters the replenishment chamber through the replenishment pipe 14. When the electrode mounting plate 3 moves away from the diaphragm 2, the volume of the replenishment chamber decreases. The liquid inside enters the water collection assembly 6 through the slot 5 and flows over the surface of the electrode strip 4, eventually entering the electrolytic chamber, forming a dynamic replenishment process. At the same time, the flowing liquid can wash the surface of the electrode strip 4, destroying the adsorption force of the air bubbles on the surface of the electrode strip 4, making them easier to detach.

[0037] First, lip-shaped sealing rings are provided at the fitting gap between the electrode mounting plate 3 and the electrolytic cell body 1, as well as at the joint between the diaphragm 2 and the electrolytic cell body 1. These are dynamic sealing methods that can adapt to reciprocating motion and can form a reliable sealing barrier when the electrode mounting plate 3 reciprocates at high frequency. In addition, while the electrode mounting plate 3 is reciprocating, the electrolyte forms a closed-loop fluid circulation system through the drain port 11, the outlet pipe 12, the replenishment tank 13, and the replenishment pipe 14. When the electrolyte is driven by the reciprocating motion of the electrode mounting plate 3, it will circulate and will not impact the sealing structure due to sudden pressure rises and falls, thus preventing the risk of gas leakage.

[0038] The electrode mounting plate 3 precisely divides the interior of the electrolytic cell 1 into an electrolysis chamber and a replenishment chamber. The two chambers form a closed-loop fluid circulation system through the drain port 11, the outlet pipe 12, the replenishment tank 13, and the replenishment pipe 14. This circulation system can buffer the volume change of the chamber through the bidirectional flow of liquid. When the electrode mounting plate 3 moves toward the diaphragm 2, the volume of the electrolysis chamber shrinks, and the liquid inside flows smoothly into the replenishment tank 13 through the drain port 11 and the outlet pipe 12. At the same time, the volume of the replenishment chamber expands, and the electrolyte in the replenishment tank 13 is slowly replenished through the replenishment pipe 14 to avoid a sudden increase in the pressure of the electrolysis chamber. When the electrode mounting plate 3 moves away from the diaphragm 2, the volume of the replenishment chamber shrinks, pushing the liquid through the tank opening 5 into the water collection assembly 6. The volume of the electrolysis chamber expands to receive the liquid, achieving a smooth transition of volume change without causing violent fluctuations. Meanwhile, the reciprocating motion of the electrode mounting plate 3 in the device is a symmetrical and synchronous design. The pressure changes of the electrolysis chamber and the replenishment chamber on both sides of the diaphragm 2 are always balanced, and there will be no sudden pressure change on one side. This avoids the diaphragm 2 from being damaged due to instantaneous pressure difference, and fundamentally eliminates the safety hazard of gas passing through the diaphragm 2.

[0039] Most existing technologies also use liquid flow flushing to assist in bubble detachment. Although this can remove some bubbles from the electrode plate surface through hydrodynamics, it easily introduces new technical problems. The buoyancy of the flushed bubbles is less than the entrainment force of the liquid flow, and they flow into the interior of the electrolysis chamber, even near the diaphragm. The electrolyte, as the core medium for ion conduction, needs to maintain continuous and uniform mass transfer channels. The entrained bubbles are suspended in the electrolyte in a dispersed state, forming a gas-liquid two-phase mixture. On the one hand, these bubbles directly occupy part of the space in the electrolyte, effectively reducing the effective mass transfer area and forcing ions to bypass the bubbles on their migration path, thus extending the mass transfer distance. On the other hand, there is significant interfacial tension between the bubbles and the electrolyte. When ions flow across the bubble surface, they are disturbed by interfacial forces, leading to a decrease in ion migration rate and affecting the efficiency and stable operation of hydrogen production from water electrolysis. To solve this technical problem, this application makes the following improvements:

[0040] Please see Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, a water-collecting assembly 6 is installed inside the slot 5. The water-collecting assembly 6 includes two sets of symmetrically arranged flexible sides 601. The flexible sides 601 are made of perfluoroether rubber, which has excellent corrosion resistance and wear resistance. One set of flexible sides 601 is rotatably connected to a first rigid bottom edge 602, and the other set of flexible sides 601 is rotatably connected to a second rigid bottom edge 603. The first rigid bottom edge 602 and the second rigid bottom edge 603 are made of titanium alloy with anodized surface treatment. Their corrosion resistance and strength meet the requirements for rigid support, and their low density reduces motion inertia. The connecting end of the flexible side 601 is processed into a serrated groove, which is completely wrapped during the vulcanization molding of the flexible side 601, forming a composite connection structure of mechanical interlocking and chemical bonding. This connection method is used to fix the flexible side 601 to the first rigid bottom edge 602 and the second rigid bottom edge 603, so that it can work stably in the reciprocating motion scenario of this device. A one-way rotation component 7 is installed between the first rigid bottom edge 602 and the second rigid bottom edge 603. The one-way rotation component 7 is used to limit the bending direction between the first rigid bottom edge 602 and the second rigid bottom edge 603. The interior of the flexible side 601 is evenly spaced. A plurality of flushing ports 604 are provided at a distance from the opening. A flexible side 601 is fixedly connected to the side of the slot 5. A one-way baffle 605 is fixedly connected to the side of the flushing port 604, and the coverage area of ​​the one-way baffle 605 is larger than the opening area of ​​the flushing port 604. The one-way rotation component 7 includes a first limiting strip 701, which is fixedly connected to the side of the second rigid bottom edge 603. A flexible connecting strip 702 is fixedly connected to the side of the first limiting strip 701 away from the second rigid bottom edge 603, and the side of the flexible connecting strip 702 away from the first limiting strip 701 is fixedly connected to the first rigid bottom edge 602. A second limiting strip 703 is fixedly connected to the side of the first rigid bottom edge 602. The second limiting strip 703 is disposed on the inner wall of the first limiting strip 701 and the flexible connecting strip 702. The second limiting strip 703 is clearance-fitted with the first limiting strip 701 and the flexible connecting strip 702. The first rigid bottom edge 602 and the second rigid bottom edge 603 can be bent through the flexible connecting strip 702 made of flexible material. When blocked by the rigid second limiting strip 703 on its side, the first rigid bottom edge 602 and the second rigid bottom edge 603 can only be bent towards the side closer to the diaphragm 2 and cannot be bent in the opposite direction.

[0041] Please see Figure 7As shown, when the electrode mounting plate 3 moves away from the diaphragm 2, the liquid pushes against the flexible side 601 and the first rigid bottom edge 602 and the second rigid bottom edge 603, extending out of the slot 5. When the first rigid bottom edge 602 and the second rigid bottom edge 603 are flush, the second limiting strip 703 is tightly attached to the inner wall of the first limiting strip 701 and the flexible connecting strip 702. Due to the obstruction of the second limiting strip 703, the flexible connecting strip 702 cannot continue to bend and rotate. At this time, a convex strip with an isosceles trapezoidal cross-section is formed on the side of the slot 5 near the electrode mounting plate 3. The liquid inside the replenishment chamber enters the convex strip formed by the water collecting assembly 6 through the slot 5 and is rushed towards the electrode through the one-way baffle 605. On the surface of strip 4, the raised strips composed of various water-collecting components 6 form several upper and lower channels with triangular cross-sections. The top of the channel is connected to the gas collecting chamber 902. The liquid flowing upward in the channel carries the air bubbles and enters the interior of the gas collecting component 9. After the initial separation by the gas collecting component 9, the gas is discharged to the subsequent processing tank, and the electrolyte enters the electrolysis chamber for circulation. When the electrode mounting plate 3 moves towards the side closer to the diaphragm 2, it is pressed by the liquid flow in the direction of movement. The flexible side 601 and the first rigid bottom edge 602 and the second rigid bottom edge 603 are folded into the interior of the slot 5. At this time, the electrode strip 4 is completely exposed inside the electrolyte and reacts with the electrolyte to produce hydrogen through electrolysis.

[0042] The electrode mounting plate 3 has slots 5 that intersect with the electrode strips 4 inside. The water-collecting component 6 inside the slots 5 forms regular isosceles trapezoidal convex strips and triangular dedicated upper and lower channels during reciprocating motion through the flexible side 601, rigid bottom edge, and unidirectional rotating component 7. These channels provide clear guidance for the liquid flow. Furthermore, the flushing port 604 of the flexible side 601 is equipped with a unidirectional baffle 605, which allows the liquid in the replenishment chamber to directionally flush the surface of the electrode strips 4, and the liquid flow speed and direction are restricted by the channels. At the same time, the movement of the electrode mounting plate 3 is coordinated with the closed-loop circulation system formed by the drain port 11, the outlet pipe 12, the replenishment tank 13, and the replenishment pipe 14. The volume changes of the electrolysis chamber and the replenishment chamber are buffered by the smooth flow of liquid. The liquid flow always flows orderly along the preset path without irregular disturbances, so turbulence is not introduced.

[0043] The inclined flexible side 601 directs the flushing port 604 toward the surface of the electrode strip 4, allowing the directional liquid to precisely flush the surface of the electrode strip 4, efficiently removing adhering air bubbles and preventing the effective reaction area from being reduced due to long-term coverage of the electrode by air bubbles. At the same time, the removed air bubbles are confined within a dedicated channel and move upward with the liquid flow. This not only eliminates the problem of air bubbles being carried into the electrolyte by the liquid flow and hindering ion migration in traditional flushing, but also guides the air bubbles to quickly converge at the gas collection component 9 above, reducing the residence time and dissolution loss of gas in the electrolyte. This also ensures the purity of the electrolyte and the ion transport efficiency, ultimately improving the electrolysis efficiency.

[0044] Please see Figure 8 As shown, two sets of locking components 8 are symmetrically arranged at the upper and lower ends of the first limiting bar 701. The locking component 8 includes a locking block 801, which is slidably connected to the end of the first limiting bar 701. The locking component 8 also includes a slot 802, which is opened at the end of the second limiting bar 703. The portion of the locking block 801 extending out of the first limiting bar 701 is inserted into the inside of the slot 802, and the locking block 801 and the slot 802 are slidably connected. A spring 803 is provided on the top of the locking block 801. One end of the spring 803 near the slot 802 is fixedly connected to the top of the locking block 801, and the other end of the spring 803 is fixedly connected to the top of the first limiting bar 701. The locking component 8 also includes a spring 804, which is fixedly connected to the inside of the slot 5.

[0045] When the water-collecting component 6 forms a trapezoidal protrusion on the side of the slot 5, and the first rigid bottom edge 602 and the second rigid bottom edge 603 are flush, the locking block 801 is engaged inside the slot 802. When the electrode mounting plate 3 begins to change its direction of movement, the outer surfaces of the first rigid bottom edge 602 and the second rigid bottom edge 603 begin to be subjected to force, pushing the first rigid bottom edge 602 and the second rigid bottom edge 603 back towards the slot 5. At this time, because the locking block 801 engages the first limiting strip 701 and the second limiting strip 703 together, the first rigid bottom edge 602 and the second rigid bottom edge 603 still cannot bend inward. As they move towards the slot 5, the corners of each trapezoidal protrusion still contact each other, causing the upper and lower channels formed between each pair of water-collecting components 6 to be gradually flattened, but their front sides do not open. To prevent residual air bubbles from flowing out, while the upper and lower channels are flattened, the angle between the flexible side 601 and the electrode strip 4 gradually decreases until it is completely attached to the electrode strip 4. During this attachment process, the residual air bubbles on the electrode strip 4 that have not been washed away by the liquid flow can be squeezed and cleaned again, causing the residual air bubbles to detach from the electrode strip 4 and converge towards the center. Finally, they move upward from the remaining channel space. When the one-way rotating component 7 moves to the opening of the slot 5, one end of the spring 803 is pushed by the spring plate 804 and pushes the locking block 801 outward, causing it to disengage from the slot 802. At this time, after the second limiting strip 703 is no longer blocking and restricting, the first rigid bottom edge 602 and the second rigid bottom edge 603 can be bent through the flexible connecting strip 702 and retracted into the inside of the slot 5.

[0046] On the one hand, the initial liquid flow flushing can quickly remove most of the easily detachable air bubbles from the electrode plate surface with the help of directional fluid dynamics, initially clearing the main obstacles affecting the electrode reaction. At the same time, the liquid flow drives the air bubbles to converge into the preset channels, which can effectively prevent the detached air bubbles from affecting the electrolysis efficiency. On the other hand, after the flushing is completed, the flexible side 601 gradually adheres to the surface of the electrode strip 4, which can precisely squeeze and physically scrape the micro air bubbles and stubborn attached air bubbles remaining after the liquid flow flushing. The flexible side 601 can adapt to the surface shape of the electrode plate through deformation, thoroughly removing residual air bubbles and preventing them from continuously occupying the effective reaction area of ​​the electrode. In addition, the synergistic cooperation of the two not only avoids the problem of incomplete cleaning of stubborn air bubbles by single liquid flow flushing, but also solves the defect of low efficiency of single squeezing cleaning. Ultimately, it effectively ensures full contact between the electrode and the electrolyte, improves ion transport efficiency and electrolysis reaction stability, and reduces the increase in energy consumption and reaction efficiency fluctuations caused by air bubble retention.

[0047] Please see Figure 9 As shown, a gas collecting component 9 is provided on the top of the water collecting component 6. The gas collecting component 9 includes a gas collecting chamber 902. One end of the gas collecting chamber 902 is fixedly connected to the side of the electrode mounting plate 3, and the other end of the gas collecting chamber 902 is fixedly connected to a connecting pipe 901. The cross-sectional shape of the gas collecting chamber 902 is triangular. An outlet pipe 904 is fixedly connected to the top of the gas collecting chamber 902, and the bottom end of the outlet pipe 904 is inserted at the apex of the triangle. The cross-sectional shape of the connecting pipe 901 is U-shaped. One end of the connecting pipe 901 is connected to the gas collecting chamber 902, and the other end of the connecting pipe 901 is provided with a liquid outlet 903.

[0048] First, the triangular upper and lower channels formed by the water-collecting component 6 precisely guide the bubbles, causing them to converge in an orderly manner with the liquid flow into the gas collecting chamber 902, rather than being randomly dispersed in the liquid flow within the electrolysis chamber, thus laying the foundation for gas-liquid separation. Second, the design of the triangular gas collecting chamber 902 does not rely solely on gravity for gas-liquid separation; its apex structure allows rising bubbles to naturally converge at the inlet of the gas outlet pipe 904 at the top of the chamber, forming a gas plug effect to accelerate gas discharge and improve separation efficiency. Third, when the liquid flow carries bubbles into the connecting pipe 901, the sudden change in the direction of the liquid flow and the sudden increase in the volume of the chamber cause the liquid flow velocity to suddenly slow down, significantly weakening the entrainment force on the bubbles and allowing them to float. The force is highlighted, making it easier to overcome the liquid flow resistance and converge towards the gas outlet pipe 904 at the apex of the triangular gas collecting chamber 902, which is conducive to gas-liquid separation. Furthermore, the liquid needs to flow downward along the U-shaped path of the connecting pipe 901 to the liquid outlet 903, while the bubbles, due to their own buoyancy, always have the tendency to move upward and will preferentially converge towards the gas outlet pipe 904 at the apex of the gas collecting chamber 902 for discharge. Even if a small number of tiny bubbles enter the connecting pipe 901, their buoyancy will cause them to flow upward back to the gas collecting chamber 902, rather than returning to the electrolysis chamber through the connecting pipe 901 with the downward flowing liquid, thereby achieving the separation of bubbles and liquid. Multiple designs work together to ensure efficient gas-liquid separation and prevent bubbles from returning to the electrolysis chamber with the liquid and affecting electrolyte mass transfer.

[0049] The gas collecting chamber 902 and the water collecting assembly 6 form a convex strip that are not connected internally, which can block the upward flow of liquid inside the water collecting assembly 6, so that it can only directionally scour the surface of the electrode strip 4 through the scouring port 604. The gas collecting chamber 902 and the upper and lower channels formed by each water collecting assembly 6 are connected. The liquid flow in the channel carries the scourged bubbles upward to the interior of the gas collecting chamber 902. The bubbles gather at the top of the gas collecting chamber 902 and are discharged outward through the gas outlet pipe 904. The liquid flow enters the electrolysis chamber through the connecting pipe 901 and the liquid outlet 903.

[0050] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A water electrolysis hydrogen production device with dynamic control, characterized in that, include: An electrolytic cell body is provided, with a diaphragm installed in the middle of the interior of the electrolytic cell body. Two sets of electrode mounting plates are symmetrically installed on both sides of the diaphragm. A drive assembly is installed at the bottom of the electrode mounting plates, and the drive assembly is used to move the electrode mounting plates back and forth inside the electrolytic cell body. A drain port is provided at the bottom of the electrolytic cell body, and the bottom of the drain port is connected to an outlet pipe. The outlet pipe is fixedly connected to a replenishment tank at its output end. The top of the replenishment tank is connected to a replenishment pipe, and the output end of the replenishment pipe is connected to the electrolytic cell body. Electrode strips are fixedly connected to the sides of the electrode mounting plate. The inside of the electrode mounting plate has slots that are staggered with the electrode strips. A water-collecting assembly is installed inside the slots. The water-collecting assembly includes two sets of symmetrically arranged flexible sides. One set of flexible sides is rotatably connected to a first rigid bottom edge, and the other set of flexible sides is rotatably connected to a second rigid bottom edge. A one-way rotation assembly is installed between the first rigid bottom edge and the second rigid bottom edge. The one-way rotation assembly is used to limit the bending direction between the first rigid bottom edge and the second rigid bottom edge. Several flushing ports are evenly spaced inside the flexible sides. The flexible side is fixedly connected to the side of the slot, and a one-way baffle is fixedly connected to the side of the flushing port, and the coverage area of ​​the one-way baffle is larger than the opening area of ​​the flushing port. The unidirectional rotation component includes a first limiting strip, which is fixedly connected to the side of the second rigid bottom edge. A flexible connecting strip is fixedly connected to the side of the first limiting strip away from the second rigid bottom edge, and the side of the flexible connecting strip away from the first limiting strip is fixedly connected to the first rigid bottom edge.

2. The water electrolysis hydrogen production device with dynamic control according to claim 1, characterized in that: A second limiting strip is fixedly connected to the side of the first rigid bottom edge. The second limiting strip is disposed on the inner wall of the first limiting strip and the flexible connecting strip, and the second limiting strip, the first limiting strip, and the flexible connecting strip are all clearance fit.

3. The water electrolysis hydrogen production device with dynamic control according to claim 1, characterized in that: Two sets of locking components are symmetrically arranged at the upper and lower ends of the first limiting strip. The locking components include locking blocks, which are slidably connected to the ends of the first limiting strip.

4. The water electrolysis hydrogen production device with dynamic control according to claim 3, characterized in that: The locking assembly also includes a latch, which is located at the end of the second limiting strip. The portion of the locking block extending out of the first limiting strip is inserted into the latch, and the locking block and the latch are slidably connected.

5. The water electrolysis hydrogen production device with dynamic control according to claim 4, characterized in that: The top of the locking block is provided with a spring, one end of the spring near the slot is fixedly connected to the top of the locking block, and the other end of the spring is fixedly connected to the top of the first limiting strip. The locking assembly also includes a spring plate, which is fixedly connected to the inside of the slot.

6. The water electrolysis hydrogen production device with dynamic control according to claim 1, characterized in that: The top of the water-collecting component is provided with a gas-collecting component, which includes a gas-collecting chamber. One end of the gas-collecting chamber is fixedly connected to the side of the electrode mounting plate, and the other end of the gas-collecting chamber is fixedly connected to a connecting pipe.

7. The water electrolysis hydrogen production device with dynamic control according to claim 6, characterized in that: The cross-sectional shape of the gas collecting chamber is set as a triangle, and the top of the gas collecting chamber is fixedly connected to the gas outlet pipe, with the bottom end of the gas outlet pipe inserted at the apex of the triangle.

8. The water electrolysis hydrogen production device with dynamic control according to claim 6, characterized in that: The cross-sectional shape of the connecting pipe is U-shaped. One end of the connecting pipe is connected to the gas collecting chamber, and the other end of the connecting pipe is provided with a liquid outlet.

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