Electrode plates, electrolysis unit and electrolysis hydrogen production equipment

Abstract

This application discloses an electrode plate, an electrolysis device, and an electrolytic hydrogen production equipment, relating to the field of electrolysis equipment technology. The electrode plate includes a main electrode plate, an electrode frame, and a distribution box. The electrode frame surrounds and connects to the main electrode plate, forming a receiving groove. The electrode frame has a liquid supply channel and an exhaust channel, and an exhaust hole connecting the exhaust channel and the receiving groove. The distribution box is disposed within the receiving groove and has a flow distribution cavity. The distribution box has a flow distribution surface opposite to the exhaust hole, and the flow distribution surface has multiple distribution holes connecting the flow distribution cavity and the receiving groove. The electrode frame has an inlet hole connecting the liquid supply channel and the flow distribution cavity. The technical solution provided by this application aims to achieve a more uniform distribution and flow of the electrolytic solution within the electrode plate, improving the practicality and reliability of the electrode plate.

Description

Technical Field

[0001] The embodiments in this application relate to the field of electrolysis equipment technology, and in particular to an electrode plate, an electrolysis device, and an electrolysis hydrogen production equipment. Background Technology

[0002] In related technologies, electrolysis devices typically consist of multiple electrode plates stacked together to form an integrated electrolytic cell. By energizing the electrode plates, the electrolyte solution within them reacts under the influence of electrical energy to produce gas, thus enabling stable operation of the electrolysis device.

[0003] However, the electrolyte flow field distribution within the existing electrode plate is relatively concentrated, and the electrolyte cannot be evenly distributed throughout the entire inner cavity of the electrode plate, which makes the electrode plate prone to local overheating, reducing the structural stability and reliability of the electrode plate. Utility Model Content

[0004] This application provides several embodiments of an electrode plate, an electrolysis device, and an electrolysis hydrogen production equipment, aiming to achieve a more uniform distribution and flow of the electrolytic solution within the electrode plate, thereby improving the practicality and reliability of the electrode plate.

[0005] An embodiment of this application proposes an electrode plate comprising a main electrode plate, an electrode frame, and a distribution box. The electrode frame surrounds and connects to the main electrode plate, forming a receiving groove with the main electrode plate. The electrode frame has a liquid supply channel and an exhaust channel, and an exhaust hole communicating with the exhaust channel and the receiving groove. The distribution box is disposed within the receiving groove, and a flow distribution cavity is provided within the distribution box. The distribution box has a flow distribution surface opposite to the exhaust hole, and the flow distribution surface has multiple distribution holes communicating with the flow distribution cavity and the receiving groove. The electrode frame has an inlet hole communicating with the liquid supply channel and the flow distribution cavity. The distribution box includes a baffle structure disposed within the flow distribution cavity and located between the inlet hole and the distribution holes. In the liquid flow direction of the inlet hole, the baffle structure is positioned opposite to the inlet hole.

[0006] In some embodiments, in an arrangement direction perpendicular to the liquid flow direction of the inlet hole, the length of the baffle structure is L1, the length of the inlet hole is L2, and 1.2≤L1 / L2≤2.

[0007] In some embodiments, the flow-deflecting structure is a flow-deflecting baffle, which has an arcuate surface that protrudes toward the liquid inlet.

[0008] In some embodiments, the flow-deflecting structure includes a plurality of flow-blocking blocks, which are arranged sequentially at intervals in an arrangement direction perpendicular to the flow direction of the liquid inlet.

[0009] In some embodiments, the baffle block is inclined in the direction of liquid flow in the inlet hole.

[0010] In some embodiments, the number of liquid inlets is at least two, the number of baffle structures is at least two, and one baffle structure is arranged opposite to one liquid inlet.

[0011] In some embodiments, the width of the baffle structure is smaller than the width of the flow-dividing cavity in the thickness direction of the uniform distribution box.

[0012] In some embodiments, the distribution box is arranged in an arc shape, and the arc angle of the distribution box is α in the direction perpendicular to the liquid flow direction of the liquid inlet, where 90°≤α≤150°.

[0013] In some embodiments, the uniform distribution box is mounted on the pole frame and / or the main pole plate.

[0014] In some embodiments, the distribution box is provided with either a buckle or a slot, and the inner wall of the pole frame is provided with the other of a buckle or a slot, wherein the buckle engages with the slot. Alternatively, the distribution box is welded to the inner wall of the pole frame and / or the main pole plate.

[0015] In some embodiments, the electrode plate further includes a collection box disposed in the receiving groove and covering the vent hole. The collection box has a flow-gathering cavity and a flow-gathering surface opposite to the liquid inlet hole. The flow-gathering surface has a plurality of through holes connecting the flow-gathering cavity and the receiving groove.

[0016] An embodiment of this application also provides an electrolysis device, characterized in that the electrolysis device includes a device body and an electrode plate, wherein the electrode plate is the electrode plate described above, and the electrode plate is mounted on the device body.

[0017] An embodiment of this application also proposes an electrolytic hydrogen production device, characterized in that the electrolytic hydrogen production device includes an electrolysis device and a collection device, wherein the electrolysis device is the aforementioned electrolysis device, and the electrolysis device is pipe-connected to the collection device.

[0018] In the various embodiments provided in this application, a uniform distribution box is set within the receiving groove formed by the main electrode plate and the electrode frame, allowing the liquid inlet hole on the electrode frame to circulate with the flow distribution cavity inside the uniform distribution box. Multiple distribution holes are set on the flow distribution surface of the uniform distribution box facing the exhaust hole, allowing the electrode plate to first input the electrolyte solution into the flow distribution cavity of the uniform distribution box through the liquid inlet hole, and then uniformly flow the electrolyte solution into the receiving groove of the electrode plate body through the multiple distribution holes. Furthermore, a baffle structure is set within the flow distribution cavity of the uniform distribution box, which can further utilize the baffle structure to obstruct and distribute the electrolyte solution, reducing the difference in electrolyte solution flowing through the multiple distribution holes. This results in a more uniform flow field distribution of the electrolyte solution within the receiving groove, which is beneficial for improving the electrolysis efficiency of the electrode plate. Simultaneously, it can effectively reduce the area with a small flow field distribution within the electrode plate body, avoiding localized high temperatures within the electrode plate that could potentially damage it, reducing safety hazards, and effectively improving the structural stability and reliability of the electrode plate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or prior art of this application, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the electrode plate provided in this application;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 for Figure 1 A schematic diagram of the structure of an embodiment of the electrode plate;

[0023] Figure 4 This is a schematic diagram of the structure of the second embodiment of the electrode plate provided in this application;

[0024] Figure 5 A schematic diagram of the structure of the first embodiment of the electrode plate uniform distribution box provided in this application;

[0025] Figure 6 This is a schematic diagram of the structure of the third embodiment of the electrode plate provided in this application;

[0026] Figure 7 A schematic diagram of the structure of the second embodiment of the electrode plate uniform distribution box provided in this application;

[0027] Figure 8 This is a schematic diagram of the structure of the fourth embodiment of the electrode plate provided in this application;

[0028] Figure 9 This is a schematic diagram of the structure of the fifth embodiment of the electrode plate provided in this application.

[0029] Explanation of icon numbers:

[0030] 100. Electrode plate; 10. Main electrode plate; 11. Receptacle; 30. Electrode frame; 31. Liquid supply channel; 311. Liquid inlet; 33. Exhaust channel; 331. Exhaust hole; 50. Distribution box; 51. Flow divider; 53. Distribution hole; 55. Baffle structure; 551. Baffle plate; 553. Flow block; 70. Collection box; 71. Converging cavity; 73. Through hole. Detailed Implementation

[0031] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of several embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that if directional indications (such as up, down, left, right, front, back, etc.) are involved in multiple embodiments of this application, the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] Furthermore, if multiple embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0034] In related technologies, electrolysis devices typically consist of multiple stacked electrode plates assembled into a single electrolytic cell. By energizing the electrode plates, the electrolyte solution within them reacts under the influence of electrical energy, producing gas and enabling stable operation of the electrolysis device. However, in existing designs, the electrolyte flow field within the electrode plates is relatively concentrated, and the electrolyte solution cannot be evenly distributed throughout the entire internal space of the electrode plate. This leads to localized overheating of the electrode plates, reducing their structural stability and reliability.

[0035] It should be noted that in existing electrode plates, the electrolyte solution enters the inner cavity of the electrode plate, which contains a larger solvent, through a small inlet hole. The electrolyte solution diffuses and flows, often resulting in a larger flow rate along the direction of the inlet hole and a smaller flow rate on either side. This leads to uneven distribution of the electrolyte velocity and flow rate within the electrode plate, hindering its efficient electrolysis and reducing its overall efficiency. Furthermore, the electrolysis process generates heat. While the flowing electrolyte within the electrode plate can carry away this heat, ensuring its continuous and stable operation, uneven flow distribution within the plate can lead to inconsistent heat dissipation, causing localized overheating. Sustained high temperatures can also cause problems such as electrode catalyst layer detachment, diaphragm melting, or electrical breakdown, resulting in failure of the electrolysis device and disrupting electrolysis operations. To address these issues, this application proposes an electrode plate 100.

[0036] Please see Figure 1 and Figure 6 In one embodiment of this application, the electrode plate 100 includes a main electrode plate 10, an electrode frame 30, and a distribution box 50. The electrode frame 30 surrounds and connects to the main electrode plate 10, and together with the main electrode plate 10, forms a receiving groove 11. The electrode frame 30 is provided with a liquid supply channel 31 and an exhaust channel 33. The electrode frame 30 is provided with an exhaust hole 331 that connects the exhaust channel 33 and the receiving groove 11. The distribution box 50 is disposed in the receiving groove 11. The distribution box 50 is provided with a flow distribution cavity 51. The distribution box 50 is provided with a flow distribution surface opposite to the exhaust hole 331. The flow distribution surface is provided with a plurality of distribution holes 53 that connect the flow distribution cavity 51 and the receiving groove 11. The electrode frame 30 is provided with an inlet hole 311 that connects the liquid supply channel 31 and the flow distribution cavity 51.

[0037] The electrolysis device can be an electrolytic cell or other equipment. In the electrolysis device, multiple electrode plates 100 can be stacked in sequence, so that the multiple electrode plates 100 are connected to the positive and negative terminals of the power supply in sequence. The electrolytic solution is used to electrolyze in the accommodating tank 11 of the multiple electrode plates 100 to generate gaseous products, thus ensuring the stable electrolysis operation of the electrolysis device. Electrode plates 100 can be formed by connecting electrode frames 30 around the outer periphery of main electrode plates 10. The thickness of the electrode frames 30 is greater than the thickness of the main electrode plates 10, so that the electrode frames 30 and the main electrode plates 10 can enclose and form an open receiving groove 11. At this time, the inner wall of the electrode frames 30 can be formed as the side wall of the receiving groove 11, and the plate surface of the main electrode plates 10 can be formed as the bottom wall of the receiving groove 11. When multiple electrode plates 100 are stacked and installed in the electrolysis device, the electrode frames 30 of multiple electrode plates 100 can be connected tightly in sequence to achieve the stacking and sealing of multiple electrode plates 100 in the electrolysis device, so that the receiving grooves 11 of two adjacent electrode plates 100 can be closed to form a relatively sealed electrolysis chamber.

[0038] When multiple electrode plates 100 are stacked, the liquid supply channel 31 and the exhaust channel 33 on the electrode plate 100 can be connected to each other. The electrolyte solution is supplied to the receiving tank 11 of each electrode plate 100 through the liquid supply channel 31, and the gaseous products generated by electrolysis can be collected and output through the exhaust channel 33. This allows the electrolysis device to transport the gaseous products formed by electrolysis to the collection device. In the collection device, components such as gas-liquid separators and dryers can be used to purify the gaseous products, so as to achieve stable collection and storage of hydrogen and stable operation of the electrolysis hydrogen production equipment.

[0039] The main electrode plate 10 and the electrode frame 30 can be integrally formed, and can be produced as a whole using 3D printing technology or integral casting technology, so that the electrode plate 100 can have good overall structural strength. Alternatively, the main electrode plate 10 and the electrode frame 30 can be connected into one piece by welding or bonding, so that the electrode plate 100 can be produced by processing each component separately and then integrating them, which helps to reduce the manufacturing difficulty of the electrode plate 100.

[0040] In this application, by providing a distribution box 50 within the receiving tank 11, the distribution box 50 can be positioned on the inner wall of the electrode frame 30, or it can be positioned on the main electrode plate 10 and close to the inner wall of the electrode frame 30. The distribution box 50 can be a hollow box structure, allowing a distribution cavity 51 of a certain volume to be formed within it. By providing an inlet hole 311 on the electrode frame 30 connecting the liquid supply channel 31 and the distribution cavity 51, the electrolyte solution can flow into the distribution cavity 51 through the inlet hole 311. The distribution box 50 can be constructed using, for example... Figure 5 and Figure 7The structural design of the box shown allows the distribution box 50 to be open on the side facing the liquid inlet 311, so that the opening on one side of the distribution box 50 covers the liquid inlet 311 on the electrode frame 30; or, the distribution box 50 can be provided with a pipe on the side facing the liquid inlet 311 to connect to the inner wall of the electrode frame 30, and the pipe is connected to the liquid inlet 311 to ensure that the electrolyte solution flows stably into the distribution chamber 51.

[0041] By setting the distribution box 50 and the exhaust port on the pole frame 30 at intervals, multiple distribution holes 53 can be set on the flow distribution surface of the distribution box 50 and the exhaust port. The multiple distribution holes 53 can be arranged along the lateral extension direction of the distribution box 50, or the multiple distribution holes 53 can be arranged in sequence at a certain interval on the flow distribution surface. After the electrolyte solution enters the distribution chamber 51 of the distribution box 50 through the inlet hole 311, it can be evenly distributed into the receiving tank 11 through multiple distribution holes 53. This allows the electrolyte solution to have a better diffusion flow area corresponding to the width of the receiving tank 11, enabling it to flow better throughout the entire receiving tank 11. This improves the uniformity of the flow rate and velocity distribution of the electrolyte solution within the receiving tank 11, allowing the electrolyte solution to make more comprehensive contact with the main electrode plate 10 for electrolysis, which is beneficial for improving the efficiency of electrolysis. At the same time, it allows the heat generated on the main electrode plate 10 to be more fully discharged to the outside of the electrode plate 100 through the gas products generated by the electrolysis of the electrolyte solution, preventing local overheating of the main electrode plate 10 and reducing faults such as electrode catalyst layer detachment, diaphragm melting, or electrical breakdown of the electrode plate 100. This effectively improves the overall structural stability and reliability of the electrode plate 100.

[0042] In one embodiment of this application, a uniform distribution box 50 is provided within the receiving groove 11 formed by the main electrode plate 10 and the electrode frame 30, allowing the liquid inlet hole 311 on the electrode frame 30 to circulate with the flow distribution cavity 51 within the uniform distribution box 50. Multiple distribution holes 53 are provided on the flow distribution surface of the uniform distribution box 50 facing the exhaust hole 331. This allows the electrode plate 100 to first input the electrolyte solution into the flow distribution cavity 51 of the uniform distribution box 50 through the liquid inlet hole 311, and then the electrolyte solution is uniformly flowed from the flow distribution cavity 51 into the receiving groove 11 of the electrode plate 100 body through the multiple distribution holes. This results in a more uniform flow field distribution of the electrolyte solution within the receiving groove 11, which is beneficial for improving the electrolysis efficiency of the electrode plate 100. Simultaneously, it effectively reduces the area with a small flow field distribution within the electrode plate 100 body, avoiding localized high temperatures within the electrode plate 100 that could potentially damage it, reducing safety hazards, and effectively improving the structural stability and reliability of the electrode plate 100.

[0043] In this application, as Figure 1 and Figure 4As shown, the electrode plate 100 can enclose the inner wall of the electrode frame 30 to form a circular or elliptical frame shape, so that the receiving groove 11 can adopt a circular or elliptical groove structure design. In this case, the distribution box 50 can adopt a shape such as... Figure 5 The arc-shaped box design of the corresponding sidewall of the receiving tank 11 shown is beneficial for the distribution box 50 to adopt the same arc-shaped flow-dividing surface design. This allows the multiple distribution holes 53 on the flow-dividing surface to evenly diffuse the electrolyte solution into the receiving tank 11 and flow towards the exhaust hole 331, achieving a more uniform flow field distribution effect of the electrolyte solution within the receiving tank 11. Or, as... Figure 6 and Figure 8 As shown, the electrode plate 100 can be formed into a square frame shape by the inner wall of the electrode frame 30, so that the receiving groove 11 can be adopted as shown in the figure. Figure 7 The square tank structure design shown allows the distribution box 50 to be set to correspond to one side length of the inner wall of the pole frame 30, so that the distribution box 50 can correspond to the width design of the receiving tank 11. This allows the multiple distribution holes 53 on the flow distribution surface to better diffuse the electrolyte solution throughout the entire receiving tank 11, achieving a more uniform flow field distribution effect of the electrolyte solution within the receiving tank 11. Of course, there are many other shapes for the receiving tank 11 and the distribution box 50, and this application does not limit them.

[0044] See Figure 1 and Figure 6 In one embodiment of this application, the distribution box 50 includes a baffle structure 55, which is disposed in the flow distribution cavity 51 and located between the liquid inlet hole 311 and the distribution hole 53. In the liquid flow direction of the liquid inlet hole 311, the baffle structure 55 is disposed opposite to the liquid inlet hole 311.

[0045] In this embodiment, by setting a baffle structure 55 in the flow distribution cavity 51, the baffle structure 55 can be set in the form of a baffle or a flow distribution column. By setting the baffle structure 55 between the liquid inlet hole 311 and the distribution hole 53 and facing the liquid inlet hole 311, the electrolyte solution entering the flow distribution cavity 51 through the liquid inlet hole 311 can flow better to the entire flow distribution cavity 51 under the flow diversion effect of the baffle structure 55. This allows the electrolyte solution to fill the flow distribution cavity 51 and then diffuse into the receiving tank 11 through multiple distribution holes 53. This helps to make the flow rate and velocity distribution of the electrolyte solution entering the receiving tank 11 through the distribution holes 53 more uniform, reduce the liquid flow difference in the receiving tank 11, better avoid local overheating on the main electrode plate 10, and further improve the structural stability and reliability of the electrode plate 100.

[0046] Since the flow rate of the electrolyte solution entering through the inlet 311 is relatively high, the baffle structure 55 can be treated or made of a certain material to ensure that it can stably withstand the liquid flow force of the electrolyte solution and guarantee its function of blocking and diverting the electrolyte. For example, the baffle structure 55 can be surface-treated with an impact-resistant coating to ensure it can stably withstand the impact of the liquid flow; or, it can be made of materials with good impact resistance, such as polysulfone plastic or polyphenylene sulfone resin, to ensure its structural stability and improve the service life of the electrode plate 100. Of course, there are many other ways to improve the impact resistance of the baffle structure 55, and this application does not limit this approach.

[0047] See Figure 1 and Figure 6 In one embodiment of this application, in an arrangement direction perpendicular to the liquid flow direction of the liquid inlet 311, the length of the baffle structure 55 is L1, the length of the liquid inlet 311 is L2, and 1.2≤L1 / L2≤2.

[0048] In this embodiment, as Figure 1 and Figure 6 The liquid flow direction shown can be perpendicular to the liquid inlet 311 and can be the length extension direction of the distribution box 50. By setting the ratio of the length L1 of the baffle structure 55 to the length L2 of the liquid inlet 311 between 1.2 and 2, the length of the baffle structure 55 can be greater than the length of the liquid inlet 311. This allows the baffle structure 55 to stably block and divert the input electrolyte solution to flow towards both sides of the diversion cavity 51. Furthermore, by using an appropriate baffle structure 55, the liquid flow can be stably diffused and ejected through multiple distribution holes 53, further improving the structural stability and reliability of the electrode plate 100.

[0049] By setting L1 / L2 to be greater than or equal to 1.2, the baffle structure 55 can better correspond to the entire inlet setting, ensuring that the baffle structure 55 stably distributes the electrolytic solution to the entire distribution chamber 51, achieving better uniform distribution of the flow field within the electrode plate 100, reducing the difference in liquid flow rate and velocity within the receiving tank 11, and achieving better electrolysis efficiency and safety performance of the electrode plate 100. Conversely, by setting L1 / L2 to be less than or equal to 2, the length of the baffle structure 55 is prevented from being too long, avoiding excessively low flow rate and velocity of the liquid flowing around the baffle structure 55 to the distribution hole 53, thus enabling a more uniform and reliable flow field distribution within the electrode plate 100, further improving the structural stability and reliability of the electrode plate 100.

[0050] See Figure 1In one embodiment of this application, the flow-deflecting structure 55 is a flow-deflecting baffle 551, which has an arcuate surface that protrudes toward the liquid inlet hole 311.

[0051] In this embodiment, it can be understood that when the electrode plate 100 has a circular or elliptical inner wall for the electrode frame 30, the distribution box 50 can be set with an arc-shaped box structure so that the distribution box 50 can be better adapted to the structural shape of the receiving tank 11 for adjustment, thereby achieving a more uniform and reliable diversion and diffusion effect of the electrolyte solution in the receiving tank 11.

[0052] At this time, the baffle structure 55 can be configured with a raised arc-shaped surface facing the liquid inlet 311. The arc-shaped surface can play a certain guiding role, so that the electrolyte solution can flow more stably towards both sides of the distribution cavity 51, reducing the flow rate loss caused by repeated collisions of the liquid flow in the distribution cavity 51. This allows the electrolyte solution to be stably diffused into the receiving tank 11 through multiple distribution holes 53, achieving better distribution of the electrolyte solution by the distribution box 50, and further improving the practicality and structural reliability of the electrode plate 100.

[0053] See Figure 3 In one embodiment of this application, the uniform distribution box 50 is arranged in an arc shape, and the arc angle of the uniform distribution box 50 in the direction perpendicular to the liquid flow direction of the liquid inlet 311 is α, where 90°≤α≤150°.

[0054] In this embodiment, the use of an arc-shaped distribution box 50 can achieve a more uniform diffusion and outflow of the electrolyte solution within the arc-shaped receiving groove 11. At this time, by setting the arc angle of the distribution box 50 between 90° and 150°, a better length setting of the distribution box 50 can be achieved, so that the distribution box 50 can more evenly flow the electrolyte solution into the receiving groove 11 and flow towards the exhaust hole 331.

[0055] By setting the arc angle α of the distribution box 50 to be greater than or equal to 90°, the distribution box 50 can have a larger arc, ensuring that the electrolyte solution flowing out through the multiple distribution holes 53 of the distribution box 50 can stably fill the entire receiving tank 11, thus better reducing the liquid flow blind zone in the receiving tank 11. Conversely, by setting the arc angle α of the distribution box 50 to be less than or equal to 150°, the arc of the distribution box 50 is prevented from being too large, avoiding the electrolyte solution failing to fill the entire distribution cavity 51 properly. Simultaneously, it prevents excessive liquid flow rate and velocity on both sides of the distribution box 50, ensuring a more uniform flow field distribution of the liquid flowing into the receiving tank 11 through the distribution box 50, further improving the practicality and structural reliability of the electrode plate 100. For example, the arc angle α of the distribution box 50 can be set to 120°, within which the distribution box 50 can achieve a better effect of uniformly diffusing the solution.

[0056] See Figure 8 In one embodiment of this application, the flow deflection structure 55 includes a plurality of flow deflection blocks 553, which are arranged in a sequence at intervals in an arrangement direction perpendicular to the flow direction of the liquid inlet 311.

[0057] In this embodiment, it can be understood that the electrode plate 100 can have the electrode frame 30 with an inner wall structure design in a certain direction. At this time, the distribution box 50 can be set with a square box structure set in the receiving groove 11, so that the electrolyte solution can flow into the receiving groove 11 more evenly through the multiple distribution holes 53 on the distribution box 50, thereby improving the electrolysis efficiency of the electrode plate 100.

[0058] At this time, the distribution box 50 can be configured with multiple baffle blocks 553 arranged in a single configuration. By arranging these baffle blocks 553 facing the inlet hole 311, the electrolyte solution entering the distribution cavity 51 can be better dispersed, allowing the electrolyte solution to flow more evenly towards both sides of the distribution cavity 51. This ensures the electrolyte solution flows uniformly into the distribution cavity 51 and, through the multiple distribution holes 53, flows evenly into the receiving tank 11, effectively reducing the liquid flow blind zone within the receiving tank 11, ensuring smooth and uniform distribution within the electrode plate 100, and further improving the structural stability and reliability of the electrode plate 100. The baffle blocks 553 can be plate-shaped, columnar, or block-shaped; this application does not limit the shape of the baffle blocks 553.

[0059] See Figure 8 In one embodiment of this application, the flow baffle 553 is inclined in the direction of liquid flow in the inlet hole 311.

[0060] In this embodiment, the flow-blocking structure 55 can be arranged with the flow-blocking block 553 tilted in the direction of liquid flow. This allows the flow-blocking block 553 to better push the solution obliquely to both sides of the flow-dividing cavity 51 when it obstructs the flow of the electrolyte solution. This further improves the uniform distribution of the electrolyte solution in the flow-dividing cavity 51, ensuring that the electrolyte solution can flow evenly from the multiple distribution holes 53 of the distribution box 50 into the receiving tank 11. This ensures the full electrolysis operation of the electrolysis device, reduces the risk of failure of the electrode plate 100, and further improves the structural stability and reliability of the electrode plate 100.

[0061] The inclination direction of the baffle can be adjusted according to the position of the inlet hole 311. For example, when the inlet hole 311 is located in the middle of the inner wall of the electrode frame 30, the center line of the inlet hole 311 can be used as the dividing line, so that the baffle block 553 on the left side of the center line of the inlet hole 311 is tilted to the left, and the baffle block 553 on the right side of the center line of the inlet hole 311 is tilted to the right, ensuring that the baffle structure 55 evenly distributes the electrolyte solution to both sides of the distribution cavity 51; or, as Figure 8 As shown, when the liquid inlet 311 is a certain distance away from the middle of the inner wall of the electrode frame 30, multiple baffles 553 that are far from the side wall of the receiving tank 11 can be tilted toward that side wall, while a few baffles 553 that are close to the other side wall of the receiving tank 11 can be tilted toward the other side wall, so that the electrolyte solution can be more evenly distributed to the entire distribution chamber 51, and the distribution box 50 can achieve a better flow equalization effect on the electrolyte solution.

[0062] See Figure 4 In one embodiment of this application, the number of liquid inlet holes 311 is at least two, the number of baffle structures 55 is at least two, and one baffle structure 55 is disposed opposite to one liquid inlet hole 311.

[0063] It is understood that in some embodiments, the electrode plate 100 may have at least two liquid inlet holes 311 provided in the electrode frame 30 to increase the liquid inlet rate, thereby better improving the electrolysis operation rate of the electrolysis device and further improving the practicality and structural reliability of the electrode plate 100.

[0064] At this time, the distribution box 50 can be configured such that the number of baffle structures 55 corresponds to the number of inlet holes 311, so that one baffle structure 55 is positioned opposite to one inlet hole 311. In this way, the baffle structures 55 can be used to block and divert the electrolyte solution flowing into the distribution cavity 51 through the inlet hole 311 towards both sides of the distribution cavity 51, ensuring that the electrolyte solution is evenly distributed in the distribution cavity 51. This makes the flow field distribution of the electrolyte solution flowing into the receiving tank 11 through the distribution box 50 through multiple distribution holes 53 more uniform, further improving the practicality and reliability of the electrode plate 100.

[0065] In addition, in some embodiments, when the electrode frame 30 is provided with two liquid inlet holes 311 with a small spacing, a baffle structure 55 with a larger length can be used to be arranged opposite to the two liquid inlet holes 311. This can also achieve the effect of uniformly distributing the input electrolyte solution in the diversion cavity 51, ensuring that the electrolyte solution can be uniformly diffused into the receiving tank 11 through multiple distribution holes 53, and avoiding uneven distribution in the electrode plate 100.

[0066] See Figure 5 and Figure 7In one embodiment of this application, in the thickness direction of the uniform distribution box 50, the width of the baffle structure 55 is smaller than the width of the diversion cavity 51.

[0067] In this embodiment, the baffle structure 55 can be a plate structure or a block structure connected to one inner wall of the distribution box 50, and the baffle structure 55 is spaced apart from the other inner wall of the distribution box 50 so that the width of the baffle structure 55 is smaller than the width of the diversion cavity 51. In this way, the baffle structure 55 can prevent part of the diverted electrolyte solution from flowing through the gap between the baffle structure 55 and the inner wall of the distribution box 50 to the distribution hole 53 opposite to the baffle structure 55. This helps to avoid the possibility that the flow rate and velocity of the electrolyte solution flowing out of the distribution hole 53 opposite to the baffle structure 55 may be low due to the excessive length of the baffle structure 55. This allows the distribution box 50 to achieve a more uniform flow field distribution of the electrolyte solution, further improving the structural stability and reliability of the electrode plate 100.

[0068] In one embodiment of this application, the uniform distribution box 50 is mounted on the pole frame 30 and / or the main pole plate 10.

[0069] It is understandable that the uniform distribution box 50 can adopt a structural design that is separate from the electrode frame 30 and the main electrode plate 10. The uniform distribution box 50 can be stably assembled in the electrode plate 100 by installing the uniform distribution box 50 on the electrode frame 30 and / or the main electrode plate 10.

[0070] In some embodiments, the uniform distribution box 50 can be installed and connected to the inner wall of the electrode frame 30. The electrode frame 30, with its higher structural strength, can better assist in bearing the liquid flow force on the uniform distribution box 50, thus ensuring better structural stability of the electrode plate 100.

[0071] In other embodiments, the distribution box 50 can be installed on the plate surface of the main electrode plate 10. In this case, the electrode frame 30 can surround the electrode plate so that the distribution box 50 passes through the inner ring space of the electrode frame 30, and the distribution box 50 can be fitted with the inner wall of the electrode frame 30 to ensure the stable assembly of the distribution box 50.

[0072] In other embodiments, the distribution box 50 can also be connected to the inner wall of the pole frame 30 and the plate surface of the main pole plate 10 at the same time, so that the distribution box 50 can be more firmly assembled with the pole frame 30 and the main pole plate 10 to form an integral structure, thereby further improving the overall structural stability and reliability of the electrode plate 100.

[0073] In one embodiment of this application, the uniform distribution box 50 is provided with one of a buckle or a slot, and the inner wall of the pole frame 30 is provided with the other of a buckle or a slot, wherein the buckle and the slot engage in a snap-fit ​​connection.

[0074] In this embodiment, the electrode plate 100 can be provided with a buckle on the distribution box 50, and the inner wall of the electrode frame 30 can be provided with a matching slot, so that the distribution box 50 can be snapped into the slot of the inner wall of the electrode frame 30 through the buckle, thereby achieving a stable assembly of the distribution box 50; or, a buckle can be provided on the inner wall of the electrode frame 30, and the distribution box 50 can be provided with a matching slot, so that the distribution box 50 can be snapped into place by inserting the buckle on the inner wall of the electrode frame 30 into the slot, thereby achieving a stable assembly of the distribution box 50.

[0075] Furthermore, after the buckle and slot are assembled, the gap between the buckle and slot can be filled and sealed with sealant or filler to better improve the installation stability and reliability of the distribution box 50 on the pole frame 30 and prevent the distribution box 50 from falling off.

[0076] Alternatively, the uniformly distributed box 50 may be welded to the inner wall of the pole frame 30 and / or the main pole plate 10.

[0077] In some embodiments, the distribution box 50 can also be connected to the electrode frame 30 or the main electrode plate 10 by welding to ensure the stable installation of the distribution box 50. In this case, the distribution box 50 can be welded to the inner wall of the electrode frame 30; or the distribution box 50 can be welded to the surface of the main electrode plate 10; or, a portion of the distribution box 50 can be welded to the inner wall of the electrode frame 30, and another portion of the distribution box 50 can be welded to the main electrode plate 10, ensuring the installation stability and reliability of the distribution box 50. Using welding installation allows the distribution box 50 to be more securely placed in the receiving tank 11, better withstand the force of the electrolyte solution entering, prevent the distribution box 50 from falling off, and further improve the overall structural stability and reliability of the electrode plate 100.

[0078] Furthermore, in some embodiments, the distribution box 50 can also be integrally formed with the electrode frame 30 or the main electrode plate 10. This integral forming can be achieved using 3D printing technology or integral forging technology. Of course, there are many ways to integrally form the distribution box 50 with the electrode frame 30 or the main electrode plate 10, and this application does not limit this approach. Adopting an integrally formed structure can better improve the load-bearing capacity of the distribution box 50, effectively prevent the distribution box 50 from falling off, and further improve the overall structural stability and reliability of the electrode plate 100.

[0079] See Figure 9 In one embodiment of this application, the electrode plate 100 further includes a collection box 70, which is disposed in the receiving groove 11 and covered by the exhaust hole 331. The collection box 70 is provided with a flow-gathering cavity 71 and a flow-gathering surface opposite to the liquid inlet hole 311. The flow-gathering surface is provided with a plurality of through holes 73 connecting the flow-gathering cavity 71 and the receiving groove 11.

[0080] In this embodiment, by setting a collection box 70 near the exhaust port 331, the collection box 70 covers the exhaust port 331. This allows the gaseous products generated by the electrolysis of the electrolyte solution in the containing tank 11 to enter the converging cavity 71 through the through holes 73 of the collection box 70, and then flow from the converging cavity 71 into the exhaust port 331 for output, ensuring the stable operation of the electrode plate 100. Under the action of the collection box 70, the multiple through holes 73 can guide and distribute the gaseous products to a certain extent, enabling a more uniform liquid flow field and exhaust flow field in the electrode plate 100. This allows the electrolyte solution and the gaseous products generated by electrolysis to diffuse and flow more evenly within the electrode plate 100, achieving a more stable and reliable electrolysis operation and further improving the electrolysis efficiency and practicality of the electrode plate 100.

[0081] The structural design of the collection box 70 on the electrode plate 100 is similar to that of the distribution box 50. Multiple through-holes 73 allow the gaseous products to uniformly enter the converging cavity 71 and converge towards the exhaust port 331, achieving a uniform flow field distribution within the electrode plate 100. Therefore, the specific structural features of the collection box 70 can be set with the same structural features as the distribution box 50 in the above embodiments, and the collection box 70 can possess the beneficial effects brought by the distribution box 50 in the above embodiments, further improving the practicality and reliability of the electrode plate 100.

[0082] This application also proposes an electrolysis device, which includes a device body and an electrode plate 100. The specific structure of the electrode plate 100 is as described in the above embodiments. Since this electrolysis device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0083] This application also proposes an electrolytic hydrogen production device, which includes an electrolysis device and a collection device. The specific structure of the electrolysis device is as described in the above embodiments. Since this electrolytic hydrogen production device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0084] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. An electrode plate, characterized in that, include: Main electrode plate; An electrode frame surrounds and connects to the main electrode plate, and together with the main electrode plate forms a receiving groove. The electrode frame is provided with a liquid supply channel and an exhaust channel, and the electrode frame is provided with an exhaust hole that connects the exhaust channel and the receiving groove. The uniform distribution box is disposed in the receiving groove. The uniform distribution box is provided with a flow distribution cavity. The uniform distribution box is provided with a flow distribution surface opposite to the exhaust hole. The flow distribution surface is provided with a plurality of distribution holes connecting the flow distribution cavity and the receiving groove. The pole frame is provided with a liquid inlet hole connecting the liquid supply channel and the flow distribution cavity. The uniform distribution box includes a baffle structure, which is disposed in the flow distribution cavity and located between the liquid inlet and the distribution hole. In the liquid flow direction of the liquid inlet, the baffle structure is arranged opposite to the liquid inlet.

2. The electrode plate as described in claim 1, characterized in that, In an arrangement direction perpendicular to the liquid flow direction of the inlet hole, the length of the baffle structure is L1, the length of the inlet hole is L2, and 1.2≤L1 / L2≤2.

3. The electrode plate as described in claim 1, characterized in that, The flow-deflecting structure is a flow-deflecting baffle, which has an arc-shaped surface that protrudes towards the liquid inlet.

4. The electrode plate as described in claim 1, characterized in that, The flow-blocking structure includes multiple flow-blocking blocks, which are arranged sequentially at intervals in an arrangement direction perpendicular to the liquid flow direction of the inlet hole.

5. The electrode plate as described in claim 4, characterized in that, The baffle block is inclined in the direction of liquid flow in the inlet hole.

6. The electrode plate as described in claim 1, characterized in that, The number of liquid inlet holes is at least two, and the number of baffle structures is at least two, with one baffle structure being arranged opposite to one liquid inlet hole.

7. The electrode plate as described in claim 1, characterized in that, In the thickness direction of the uniformly distributed box, the width of the baffle structure is smaller than the width of the flow-dividing cavity.

8. The electrode plate as described in claim 1, characterized in that, The uniform distribution box is arc-shaped, and the arc angle of the uniform distribution box is α in the direction perpendicular to the liquid flow direction of the liquid inlet, where 90°≤α≤150°.

9. The electrode plate as described in claim 1, characterized in that, The uniformly distributed box is installed on the pole frame and / or the main pole plate.

10. The electrode plate as described in claim 9, characterized in that, The uniform distribution box is provided with one of a buckle or a slot, and the inner wall of the pole frame is provided with the other of a buckle or a slot, wherein the buckle and the slot engage in a locking action. Alternatively, the uniformly distributed box is welded to the inner wall of the pole frame and / or the main pole plate.

11. The electrode plate as claimed in claim 1, characterized in that, The electrode plate also includes a collection box, which is disposed in the receiving groove and covers the vent hole. The collection box has a flow-gathering cavity and a flow-gathering surface opposite to the liquid inlet. The flow-gathering surface has multiple through holes connecting the flow-gathering cavity and the receiving groove.

12. An electrolysis apparatus, characterized in that, The electrolysis apparatus includes an apparatus body and an electrode plate, wherein the electrode plate is any one of the electrode plates described in claims 1 to 11, and the electrode plate is mounted on the apparatus body.

13. An electrolytic hydrogen production device, characterized in that, The electrolytic hydrogen production equipment includes an electrolysis device and a collection device, wherein the electrolysis device is the electrolysis device as described in claim 12, and the electrolysis device is connected to the collection device by a pipeline.

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