Electrolytic bath pole plate, electrolytic unit and electrolytic bath

Abstract

The invention discloses an electrolytic bath pole plate, an electrolytic unit and an electrolytic bath, and relates to the technical field of hydrogen production, the electrolytic bath pole plate comprises a pole plate main body, a pole frame and a conductive layer, the pole plate main body is made of a non-metal insulating material; the pole frame surrounds the pole plate main body; the conductive layer comprises a plurality of conductive parts connected into a whole, the plurality of conductive parts are embedded into the polar plate main body, and at least part of the conductive parts protrude out of at least one side of the polar plate main body. Through the integrated design of the pole plate main body, the pole frame and the conductive layer, the technical problem that the electrolytic cell pole plate is difficult to realize light weight can be solved, and the electrolytic efficiency is optimized through the conductive part.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and in particular to an electrolyzer electrode plate, an electrolysis unit, and an electrolyzer. Background Technology

[0002] In water electrolysis for hydrogen production, the electrode plates of the electrolyzer are the main sites where the electrolysis reaction occurs, and their role in hydrogen production equipment is becoming increasingly important.

[0003] However, in related technologies, the electrode plates need to be welded together to combine the electrode frame and the electrode plate body. The metal electrode plates are heavy, and the electrolytic cell has hundreds of electrode plates. The whole cell is heavy and prone to sinking. In addition, there are problems such as complicated processing and difficulty in large-scale process production. Summary of the Invention

[0004] The main purpose of this application is to propose an electrolytic cell electrode plate, an electrolytic unit, and an electrolytic cell, aiming to solve the technical problem of how to reduce the weight of the electrolytic cell electrode plate.

[0005] On the one hand, an electrolytic cell electrode plate is provided, comprising:

[0006] The electrode body is made of non-metallic insulating material; A frame, which surrounds the electrode plate body; The conductive layer includes a plurality of conductive portions connected as one unit, the plurality of conductive portions being embedded within the electrode body, and at least a portion of the conductive portions being disposed protruding from at least one side of the electrode body.

[0007] In one embodiment, the conductive part has a connecting part and at least one conductive end, wherein at least one conductive end is integrally disposed with the connecting part, and the connecting part is embedded in the electrode plate body; At least one of the conductive portions is provided to protrude from the surface of the electrode body.

[0008] In one embodiment, the electrode body has a first surface and a second surface disposed opposite to each other; The conductive part has two conductive ends, namely a first conductive end and a second conductive end; At least a portion of the first conductive end protrudes from a first surface of the electrode body, and at least a portion of the second conductive end protrudes from a second surface of the electrode body.

[0009] In one embodiment, the conductive layer includes a plurality of first metal wires that pass through a plurality of conductive portions and are configured to connect with the plurality of conductive portions to form a mesh.

[0010] In one embodiment, the connecting portion is provided with a plurality of connecting holes, and the plurality of connecting holes on each connecting portion are interconnected; The first metal wire passes through the connection hole.

[0011] In one embodiment, the conductive part is spring-shaped; At least one conductive end of the conductive part is retractable and protrudes from the surface of the electrode body.

[0012] In one embodiment, the conductive part is any one or a combination of multiple shapes such as dumbbell, spring, column, tube, cone, and truncated pyramid.

[0013] In one embodiment, the conductive layer further includes multiple second metal wires, which are arranged in a crisscross pattern to form a mesh. Wherein, all or part of the second metal wire is configured as the conductive layer; Alternatively, the conductive portion is formed at the connection position of the multiple second metal wires; Alternatively, the conductive portion is formed on the surface of the second metal wire.

[0014] In one embodiment, the electrode body has a first surface and a second surface disposed opposite to each other, and each second metal wire includes a plurality of first protrusions and a plurality of second protrusions arranged alternately in sequence, wherein the protrusion direction of the first protrusions is opposite to the protrusion direction of the second protrusions; The first protrusion and the second protrusion are respectively configured as the conductive portion; The first protrusion protrudes at least partially from the first surface of the electrode body, and the second protrusion protrudes at least partially from the second surface of the electrode body.

[0015] In one embodiment, in a first direction, the projection surfaces of a plurality of second metal wires are arranged to cover the projection surface of the electrode body.

[0016] On the other hand, an electrolysis unit is provided, the electrolysis unit comprising an anode plate, a positive electrode, a diaphragm, a negative electrode, and a cathode plate arranged sequentially along a first direction; At least one of the anode plate and the cathode plate is an electrolytic cell electrode plate as described above.

[0017] On the other hand, an electrolytic cell is provided, including an electrolytic unit as described above, wherein there are multiple electrolytic units, and the multiple electrolytic units are stacked along a first direction; The electrolytic cell electrode plate has a first surface and a second surface arranged opposite to each other. The first surface is configured as the anode reaction zone of one of two adjacent electrolytic units, and the second surface is configured as the cathode reaction zone of the other of the two adjacent electrolytic units.

[0018] The above-described one or more technical solutions in the embodiments of this application have at least one of the following technical effects: A conductive part is provided on at least one side of the electrode body, which can be directly connected to an external electrode. External current is introduced into the electrode body through the conductive part and dispersed to the entire electrode body through the conductive layer, which can effectively improve the conductivity efficiency. There are multiple conductive parts, which are connected to form a conductive layer. The current conduction path is further planned through the conductive layer, making the current density area of ​​the entire electrode body more uniform, thereby improving the overall reaction efficiency. The conductive layer not only plays a role in conducting electricity, but also provides support for the overall structure of the electrode body, improving the structural strength and stability of the electrode body. The electrode body, electrode frame, and conductive layer are integrally molded into a complete plastic electrolytic cell electrode plate. This solves the problems of complex processing, large product weight, difficulty in large-scale process production, and difficulty in processing that exist in traditional welding processes. The electrode body is made of non-metallic insulating materials, which can also solve the problem of electrochemical corrosion of electrolytic cell electrodes and realize the lightweight design of electrolytic cell electrodes, further reducing the overall weight of the electrolytic cell. In this way, the molding and processing of the electrode body and electrode frame can be combined with the assembly process of the conductive parts. While optimizing the conductivity uniformity of the electrolytic cell electrode plate and improving the electrolysis efficiency, it not only simplifies the processing process and facilitates processing, but also extends the service life of the electrolytic cell electrode plate, thereby further simplifying the electrolytic cell processing process and making it suitable for large-scale process production. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the 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 an embodiment of the electrolytic cell electrode plate of this application; Figure 2 This is a partial schematic diagram of a cross-section of an embodiment of the electrolytic cell electrode plate of this application; Figure 3 This is a partial structural schematic diagram of an embodiment of the electrolytic cell electrode plate of this application; Figure 4 for Figure 3 A magnified view of point A; Figure 5 This is a schematic diagram of another embodiment of the electrolytic cell electrode plate of this application; Figure 6 This is a schematic diagram of the structure of another embodiment of the electrolytic cell electrode plate of this application; Figure 7 This is a cross-sectional view of another embodiment of the electrolytic cell electrode plate of this application; Figure 8 This is a schematic diagram of the structure of an embodiment of the electrolysis unit of this application; Figure 9 This is a schematic diagram of the structure of an embodiment of the electrolytic cell of this application.

[0021] Explanation of icon numbers: 10. Electrolytic cell electrode plates; 100. Electrode body; 101. First surface; 102. Second surface; 110. Liquid channel; 111. First liquid inlet; 1111. First channel; 1121. Second channel; 120. Gas outlet; 121. First gas outlet; 1211. First gas outlet channel; 122. Second gas outlet; 1221. Second gas outlet channel; 200, Frame; 300. Conductive part; 310. Connecting part; 311. Connecting hole; 321. First conductive end; 322. Second conductive end; 410. First metal wire; 420. Second metal wire; 421. First protrusion; 422. Second protrusion; 500. Metal sheet; 21. Anode plate; 22. Positive electrode; 23. Diaphragm; 24. Negative electrode; 25. Cathode plate; 31. First end pressure plate; 32. Second end pressure plate; 33. Connecting rod; 34. Disc spring; 35. Nut.

[0022] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. 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.

[0024] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators 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 indicators will also change accordingly.

[0025] Furthermore, if the 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 includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the 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.

[0026] In water electrolysis for hydrogen production, the electrode plates are the primary site of electrolysis and play an increasingly important role in the hydrogen production equipment. However, in related technologies, the electrode plates are made entirely of nickel-plated carbon steel and require welding to assemble the electrode frame and the main body of the electrode. The metal electrode plates are quite heavy, making it difficult to achieve a lightweight design. Furthermore, since an electrolyzer has hundreds of electrode plates, the overall weight is significant, making it prone to sinking. Additionally, the manufacturing process is complex and not suitable for large-scale production.

[0027] To address the challenge of achieving lightweight design for electrolytic cell electrode plates, this application proposes an electrolytic cell electrode plate, an electrolysis unit, and an electrolytic cell.

[0028] like Figure 1 , Figure 2 As shown, the electrolytic cell electrode 10 includes an electrode body 100, an electrode frame 200, and a conductive layer. The electrode body 100 is made of a non-metallic insulating material; the electrode frame 200 is disposed around the electrode body 100. The conductive layer includes a plurality of conductive portions 300 integrally connected, the plurality of conductive portions 300 being embedded in the electrode body 100, and at least a portion of the conductive portions 300 protruding from at least one side of the electrode body 100.

[0029] The electrode body 100 is the core area of ​​the electrolysis reaction. The electrode frame 200 is arranged around the electrode body 100, which can enclose the electrode body 100 to form a closed chamber, allowing the electrolyte to fully contact the electrode body 100, thereby improving the reaction efficiency. The electrode frame 200 is provided with a liquid channel 110 and a gas outlet 120. The liquid channel 110 may include an electrolyte inlet, an electrolyte outlet, and channels communicating with the electrolyte inlet and the electrolyte outlet respectively; and the liquid channel 110 can be used as both an electrolyte inlet and an electrolyte outlet. The gas outlet 120 may include a gas outlet and a channel communicating with the gas outlet; the liquid channel 110 and the gas outlet 120 are spatially separated and do not interfere with each other.

[0030] like Figure 1 As shown, exemplarily, the vent 120 is located at or near the top of the electrode frame 200, and the liquid channel 110 is located at or near the bottom of the electrode frame 200. Gas generated by the electrolysis reaction will be released from the surface of the electrode body 100 and discharged through the vent 120. Positioning the vent 120 at or near the top of the electrode frame 200 facilitates gas discharge and reduces the impact of localized gas accumulation on the electrolysis reaction. Electrolyte can enter or exit the electrode body 100 through the liquid channel 110. Positioning the liquid channel 110 at or near the bottom of the electrode frame 200 promotes rapid discharge of gas and bubbles from the surface of the electrode body 100 through the vent 120 during bottom liquid entry and allows for rapid discharge of electrolyte (such as alkaline solution) by gravity during liquid discharge, reducing electrolyte residue. In practical applications, the liquid channel 110 can also be set on the side of the pole frame 200 or other locations, and is not limited to the bottom of the pole frame 200. The specific location can be set according to the actual situation, and is not limited here.

[0031] In this embodiment, the conductive layer effectively solves the problem of insufficient conductivity of the electrode body 100. The plurality of conductive portions 300 of the conductive layer can be, but are not limited to, support columns, support blocks, support strips, support meshes, support frames, or other structures with conductive functions. Some or all of the plurality of conductive portions 300 of the conductive layer protrude from the electrode body 100, and these conductive portions 300 are located on at least one side of the electrode body 100 to abut against the electrodes of the electrolytic cell: for example, when the electrolytic cell electrode 10 is used as an anode plate 21, the conductive portion 300 can abut against the anode; when the electrolytic cell electrode 10 is used as a cathode plate 25, the conductive portion 300 can abut against the cathode.

[0032] In related technologies, the electrolytic cell electrode plate 10 is made entirely of nickel-plated carbon steel, which has poor conductivity. However, in the embodiments of this application, the electrode plate body and frame can be made of alkali-resistant polymer materials such as PSU (polysulfone) and PPSU (polyphenylsulfone), or other non-conductive or low-conductivity non-metallic insulating materials; the conductive part can be made of highly conductive materials such as copper, nickel, nickel-plated carbon steel, or titanium alloy. By providing a conductive part 300 that is at least partially exposed in the electrode plate body 100, the electrolytic cell electrode plate 10 can be directly connected to an external electrode. External current is introduced into the electrode plate body 100 through the conductive part 300 and dispersed throughout the entire electrode plate body 100 through the conductive layer, effectively improving conductivity. There are multiple conductive parts 300, which are connected to form a conductive layer. The current conduction path can be further planned through the conductive layer. For example, if the multiple conductive parts 300 of the conductive layer are evenly distributed, the current density area of ​​the entire electrode body 100 can be more uniform, thereby improving the overall reaction efficiency. At the same time, the electrode body 100 is subjected to uniform force, which improves its resistance to deformation. If the number of conductive parts 300 provided on at least one side of the electrode body 100 is multiple and densely arranged, the electrolysis efficiency can be improved. If the multiple conductive parts 300 of the conductive layer are scattered, the electrolysis efficiency can be controlled.

[0033] The conductive part 300 in this embodiment not only conducts electricity but also provides support for the overall structure of the electrode body 100, improving its structural strength and stability. By providing support to the electrode body 100, the effects of electrolyte immersion and impact on the electrode body 100 are reduced, keeping its surface flat and thus improving the conductivity and electrolytic reaction efficiency of the electrolytic cell, and further enhancing processing efficiency. The electrolytic cell electrode plate of this embodiment is easy to manufacture, with a processing time of approximately 60 seconds, making it suitable for large-scale mass production.

[0034] Unlike related technologies where the electrode body 100 and electrode frame 200 need to be welded together at the edges, this embodiment reduces the welding and electroplating process. The electrode body 100, electrode frame 200, and conductive layer are integrally molded into a complete plastic electrolytic cell electrode plate. By molding the above components integrally through injection molding or other methods, the problems of complex processing, large product weight, difficulty in large-scale process production, and difficulty in processing that exist in traditional welding processes can be effectively solved. The electrode body 100 is made of non-metallic insulating materials, which can also solve the problems of electrochemical corrosion that easily occur in the liquid channel 110 and gas outlet 120 of the electrolytic cell electrode plate 10, and realize the lightweight design of the electrolytic cell electrode plate, further reducing the overall weight of the electrolytic cell. In this way, it is not only easier to process, but also extends the service life of the electrolytic cell electrode plate 10. Furthermore, the integrated design of the conductive part 300 and the electrode body 100 combines the forming process of the electrode body 100 and the electrode frame 200 with the assembly process of the conductive part 300. While optimizing the conductivity uniformity of the electrode 10 in the electrolytic cell and improving the electrolysis efficiency, it also simplifies the processing steps and reduces the overall weight of the electrode in the electrolytic cell, thereby further simplifying the processing steps of the electrolytic cell and facilitating transportation and transfer. This effectively optimizes the stability of the overall structure of the electrolytic cell and is suitable for large-scale process production.

[0035] It should be noted that the electrolytic cell electrode 10 of this application can be constructed as a single electrode, in which case the conductive portion 300 is at least partially exposed on one surface of the electrode body 100: when the electrolytic cell electrode 10 is used as an anode plate 21, the conductive portion 300 can abut against the anode; when the electrolytic cell electrode 10 is used as a cathode plate 25, the conductive portion 300 can abut against the cathode. The electrolytic cell electrode 10 of this application can also be constructed as a bipolar plate, in which case the conductive portion 300 can be selectively exposed on at least one surface of the electrode body 100. The conductive portion 300 can be used as a structure that abuts against the anode or as a structure that abuts against the cathode; the specific configuration can be determined according to actual conditions and is not limited here.

[0036] like Figure 2 As shown, in one embodiment, the conductive portion 300 has a connecting portion 310 and at least one conductive end, the at least one conductive end being integrally disposed with the connecting portion 310, and the connecting portion 310 being embedded within the electrode body 100. At least one conductive portion 300 protrudes from the surface of the electrode body 100.

[0037] The connecting part 310, as the part of the conductive part 300 embedded in the electrode body 100, can be embedded in the electrode body 100 by means of interference fit, injection molding, sintering, riveting, etc., so that the conductive part 300 and the electrode body 100 form a stable whole, reducing the occurrence of problems such as loosening of the conductive part 300; the current transmitted by the external electrode is transmitted to the connecting part 310 through the conductive end, and then dispersed from the conductive layer to the electrode body 100 through the connecting part 310, which can solve the problem of insufficient conductivity of the electrode body 100, and provide a continuous and uniform current for the electrolysis reaction, thereby further improving the electrolysis efficiency.

[0038] As an example, the electrolytic cell electrode 10 can be configured as a single electrode. When the electrolytic cell electrode 10 is configured as a single electrode, one side surface of the electrode body 100 is the effective reaction surface, each conductive part 300 has a conductive end, and the conductive end of each conductive part 300 protrudes from one surface of the electrode body 100. Current enters the connection part 310 through the conductive end, and then is dispersed by the connection part 310 and the conductive layer to the reaction zone of the electrode body 100 (when the electrolytic cell electrode 10 is used as an anode plate, it corresponds to the anode chamber; when it is used as a cathode plate, it corresponds to the cathode chamber). This can significantly shorten the current transmission path, reduce resistance loss, and significantly improve electrolysis efficiency.

[0039] like Figure 2 As shown, as another example, the electrolytic cell plates can be constructed as bipolar plates.

[0040] The electrode body 100 has a first surface 101 and a second surface 102 disposed opposite to each other; the conductive part 300 has two conductive ends, namely a first conductive end 321 and a second conductive end 322. At least a portion of the first conductive end 321 protrudes from the first surface 101 of the electrode body 100, and at least a portion of the second conductive end 322 protrudes from the second surface 102 of the electrode body 100.

[0041] One of the first conductive end 321 and the second conductive end 322 is used to connect to the electrode of the anode chamber, and the other is used to connect to the electrode of the cathode chamber. Taking the first surface 101 of the electrode body 100 as the anode plate 21 and the second surface 102 as the cathode plate 25 as an example, the first conductive end 321 is used to connect to the electrode of the anode chamber, and the second conductive end 322 is used to connect to the electrode of the cathode chamber. The conductive part 300 is used to introduce external electrons into the cathode chamber during the cathode reaction; it is also used to export electrons generated in the anode chamber to the outside during the anode reaction. The connecting part 310 serves as the current channel of the conductive part 300, enabling directional transmission of current between the first conductive end 321 and the second conductive end 322. This allows the reactions on both sides of the electrolytic cell electrode 10 to proceed synchronously and efficiently, and the electrode body 100 separates the anode chamber and the cathode chamber, solving the safety problem caused by electrolyte cross-contamination.

[0042] Alternatively, each conductive part 300 may have a conductive end, with the conductive ends of some of the conductive parts 300 protruding from the first surface 101 of the electrode body 100; the conductive ends of other parts of the conductive parts 300 protruding from the second surface 102 of the electrode body 100, allowing the electrolytic cell electrode 10 to be constructed as a bipolar plate. This allows for flexible allocation of the number of conductive ends protruding from the first surface 101 and second surface 102 of the electrode body 100 as needed, while simultaneously isolating the gases (hydrogen and oxygen) generated in the anode and cathode chambers, reducing safety risks. Specific configurations can be implemented according to actual conditions and are not limited here.

[0043] It should be noted that the conductive part 300 is bonded to the electrode body 100 by injection molding or other means; when conductive ends are exposed on both the first surface 101 and the second surface 102 of the electrode body 100, the number, position, shape, size and dimensions of the conductive ends on the first surface 101 and the second surface 102 may be the same or different; the specifics can be set according to actual conditions and are not limited here.

[0044] like Figure 1 , Figure 2 As shown, in one embodiment, when the electrolytic cell electrode is constructed as a bipolar plate, the liquid channel 110 includes a first liquid inlet 111 and a second liquid inlet, and there are two gas outlets 120, namely a first gas outlet 121 and a second gas outlet 122. The first liquid inlet 111 and the first gas outlet 121 are respectively connected to the first surface 101 of the electrode body 100; the second liquid inlet and the second gas outlet 122 are respectively connected to the second surface 102 of the electrode body 100.

[0045] Taking the first surface 101 of the electrolytic cell electrode plate 10 as the anode reaction surface and the second surface 102 as the cathode reaction surface as an example: For example, the first surface 101 has a first air outlet channel 1211 communicating with the first air outlet 121 and a first channel 1111 communicating with the first liquid outlet 111; the second surface 102 has a second air outlet channel 1221 communicating with the second air outlet 122 and a second channel 1121 communicating with the second liquid outlet.

[0046] When the first surface 101 of the electrode body 100 is configured as the anode reaction surface (corresponding to the anode chamber electrolysis unit, where oxidation occurs) and the second surface 102 is configured as the cathode reaction surface (corresponding to the cathode chamber electrolysis unit, where reduction occurs): Electrolytic media such as water and alkali (required for the anode reaction) enter the first channel 1111 through the first liquid inlet 111, flow along the channel to the anode reaction surface of the first surface 101, and then uniformly enter the anode chamber electrolysis unit to provide reactants for the oxidation reaction; after the reaction, the electrolyte containing oxidation products (such as a small amount of soluble salt) flows in the reverse direction along the first channel 1111, exits the anode chamber electrolysis unit through the first liquid inlet 111, and enters the subsequent circulation or treatment system. Electrolytic media such as water and alkali enter the second channel 1121 through the second liquid inlet, flow to the cathode reaction surface of the second surface 102, and then enter the cathode chamber electrolysis unit to provide reactants for the reduction reaction; after the reaction, the electrolyte containing reduction products (such as OH-)... - The electrolyte in the cathode chamber electrolysis unit flows in reverse along the second channel 1121 and exits through the second liquid outlet to the cathode chamber electrolysis unit, entering the subsequent circulation or processing system. Gases (such as oxygen) generated in the anode chamber electrolysis unit are released at the anode reaction surface, flow along the first outlet channel 1211 to the first outlet 121, and are finally discharged as a gas-liquid mixture containing hydrogen, alkali, etc., which can be further separated and purified to obtain pure oxygen. Gases (such as hydrogen) generated in the cathode chamber electrolysis unit are released at the cathode reaction surface, flow along the second outlet channel 1221 to the second outlet 122, and are discharged as a gas-liquid mixture containing hydrogen, alkali, etc., which can be further separated and purified to obtain pure hydrogen.

[0047] In this embodiment, the reaction surfaces of the first surface 101 and the second surface 102 can be interchanged according to the electrolytic cell layout: for example, the first surface 101 can be configured as the cathode reaction surface of the first electrolytic unit, and the second surface 102 can be configured as the anode reaction surface of the second electrolytic unit. The functions of the liquid channel 110 and the gas outlet 120 provided on the first surface 101 and the second surface 102 can be switched and adapted synchronously. Specific adjustments can be made according to actual needs and are not limited here.

[0048] like Figure 3 , Figure 4 As shown, in some embodiments of this application, the conductive layer includes multiple first metal wires 410, which pass through multiple conductive portions 300 and are used to connect with the multiple conductive portions 300 to form a mesh.

[0049] The first metal wire 410 can be a metal with conductive properties, such as copper wire or nickel alloy wire, and is used to connect at least a portion of the dispersed conductive parts 300 into one or more mesh structures, thereby constructing a mesh conductive layer.

[0050] Individual conductive parts 300 are prone to poor contact due to long-term use. The mesh structure can create current channels, so even if some conductive parts 300 fail, the current can still be diverted to adjacent conductive parts 300 through the first metal wire 410, reducing the occurrence of local non-conductivity in the electrode body 100 caused by the failure of some conductive parts 300. In the embodiments of this application, multiple conductive parts 300 are connected into a mesh by the first metal wire 410, which can divert the current from high current density areas to current-weak areas, making the current density on the surface of the electrode body 100 more uniform. The mesh structure transforms the local support of individual conductive parts 300 in the conductive layer into the comprehensive support of the mesh structure, and also significantly improves the deformation resistance and impact resistance of the electrode body 100.

[0051] like Figure 4 As shown, in one embodiment, the connecting part 310 is provided with a plurality of connecting holes 311, and the plurality of connecting holes 311 on each connecting part 310 are interconnected; the first metal wire 410 is disposed through the connecting holes 311.

[0052] The multiple connecting holes 311 provided on each connecting part 310 can be two, three, four or other multiple types. The multiple connecting holes 311 on each connecting part 310 are interconnected to form a cross shape, a star shape, etc. The multiple first metal wires 410 are laid in a crisscross pattern, which makes the arrangement of multiple conductive parts 300 more flexible. The hole walls of the connecting holes 311 can also limit the first metal wires 410, reduce the occurrence of slippage of the first metal wires 410 in the holes, and ensure the long-term stability and reliability of the mesh structure to a certain extent.

[0053] It should be noted that, in addition to opening multiple interconnected connection holes 311 on the connection portion 310, in some other optional embodiments, the multiple connection holes 311 can also be independently arranged, and the multiple connection holes 311 can be arranged independently on the conductive portion 300 in any shape such as triangles or quadrilaterals to adapt to different wiring requirements; in addition, multiple connecting rings can be provided on the sidewalls of the connection portion 310, conductive end and other positions of the conductive portion 300, or an adhesive structure such as electrolyte-resistant conductive adhesive can be used to connect and fix the first metal wire 410; the specific connection method between the first metal wire 410 and the conductive portion 300 can be set according to the actual situation, and is not limited here.

[0054] In one embodiment, the conductive portion 300 is spring-shaped (not shown). At least one conductive end of the conductive portion 300 is retractable and protrudes from the surface of the electrode body 100.

[0055] Of the first surface 101 and the second surface 102 of the electrode body 100, which are arranged opposite to each other, when the electrolytic cell electrode plate is used in an electrolysis unit or an electrolytic cell, the first surface 101 of the electrode body 100 faces the anode, and the second surface 102 of the electrode body 100 faces the cathode. When the electrolytic cell electrode plate 10 is used as an anode plate 21, the conductive end protruding from the first surface 101 of the electrode body 100 can abut against the anode; when the electrolytic cell electrode plate 10 is used as a cathode plate 25, the conductive end protruding from the second surface 102 of the electrode body 100 can abut against the cathode; when the electrolytic cell electrode plate 10 is configured as a double electrode plate, the conductive end protruding from the first surface 101 of the electrode body 100 of the conductive part 300 serves as a first conductive end 321 for connection with the electrode of the anode chamber, and the conductive end protruding from the second surface 102 of the electrode body 100 serves as a second conductive end 322 for connection with the electrode of the cathode chamber. The conductive part 300 is spring-shaped and uses its own elasticity to provide pre-tightening force, which to a certain extent ensures close contact with the electrodes such as the anode and cathode of the electrolysis unit, so that the current can be transmitted stably.

[0056] It should be noted that, based on the characteristic that elastic structures can provide preload using elasticity, the conductive part 300 can be a spring structure such as a columnar spring, conical spring, or torsion spring, or it can be a conductive part 300 made of a spring-like or other elastic structure; the specific design can be determined according to actual needs without limitation. Examples of elastic conductive parts 300, such as spring-like ones, can be found in the aforementioned description of conductive parts 300 in a spring-like form, and are not limited here.

[0057] like Figure 4 , Figure 5 As shown, in other embodiments, the conductive part 300 is any one or a combination of dumbbell shape, column shape, cylindrical shape, cone shape, and truncated shape.

[0058] Taking the dumbbell-shaped conductive part 300 as an example, the first conductive end 321 and the second conductive end 322 are arranged opposite to each other on both sides of the connecting part 310, and the outer diameters of the first conductive end 321 and the second conductive end 322 are both larger than the outer diameter of the connecting part 310, which is used to enhance the fitting stability with the electrode body 100 and reduce detachment. When the conductive part 300 is columnar, its cross-section in the first direction D1 can be any shape such as triangle, circle, or ellipse. The overall structure is simple and easy to process. When the conductive part 300 is columnar, the contact area with the electrode body 100 is large, which can also effectively improve the conductivity. When the conductive part 300 is cylindrical, it is a hollow structure. Its cross-section in the first direction D1 can also be any structure suitable for actual use according to the actual setting. The cylindrical conductive part 300 can save materials and reduce costs.

[0059] like Figure 6As shown, it should be noted that, in addition to directly using an electrode body 100 made of non-metallic insulating material, the electrolytic cell electrode 10 of this application can, in some alternative embodiments, employ two metal sheets 500 spaced apart in the first direction D1, and construct the electrode body 100 by filling the space between the two metal sheets 500. In this way, not only can electrical connection be achieved through a conductive layer constructed from multiple conductive parts 300 connected as a single unit, but the conductivity can also be optimized by using the spaced-apart metal sheets 500.

[0060] like Figure 7 As shown, in another embodiment of this application, the conductive layer further includes multiple second metal wires 420, which are arranged in a crisscross pattern to form a mesh.

[0061] As an example, all or part of the second metal wire 420 is configured as a conductive layer. The second metal wire 420 has a plurality of protrusions that expose or protrude from the surface of the electrode body 100, serving as conductive ends of the conductive portion 300 that abut against the external electrode.

[0062] As another example, the conductive portion 300 is formed at the connection point of the multiple second metal wires 420. The connection point of the multiple second metal wires 420 can be, but is not limited to, the intersection of intersecting second metal wires. This connection point exposes or protrudes from the surface of the electrode body 100, serving both a conductive function and a structural reinforcement function.

[0063] As another example, the conductive portion 300 is formed on the surface of the second metal wire 420. The conductive portion 300 is formed on the portion of the second metal wire 420 that is exposed or protrudes from the surface of the electrode body 100. The conductive portion 300 formed on the surface of the second metal wire by methods such as local thickening or gold plating can enhance conductivity. Unlike the structure of the first metal wire 410 and the conductive part 300 combined, the conductive part 300 is formed on the mesh structure of the multiple second metal wires 420 arranged in a crisscross pattern, rather than being an independent component. Therefore, no additional connecting hole 311 is needed. This not only simplifies the processing steps, but also effectively improves the current transmission efficiency because the conductive layer formed by the mesh of multiple second metal wires 420 provides a conductive path for the current.

[0064] The embodiments of this application are mainly described with the example of the conductive part 300 being formed on the second metal wire 420. Related embodiments with the conductive part 300 being formed at the connection position of multiple second metal wires 420 or on the surface of the second metal wire 420 can be referred to accordingly and will not be repeated.

[0065] As an example, the electrolytic cell electrode 10 can be configured as a single electrode. When the electrolytic cell electrode 10 is configured as a single electrode, one side surface of the electrode body 100 is the effective reaction surface, and the protrusions of the multiple second metal wires 420 protrude from the surface of the electrode body 100 that serves as the reaction surface. The current from the external electrode is introduced into the mesh-like conductive layer constructed by the multiple second metal wires 420 through the protrusions of the second metal wires 420, and conducted to the reaction zone of the electrode body 100. When the electrode serves as the anode plate 21, the reaction zone corresponds to the anode chamber, and the current provides an electron transport channel for the anodic oxidation reaction; when it serves as the cathode plate 25, the reaction zone corresponds to the cathode chamber, and the current provides electrons for the cathode reduction reaction. By transmitting current through the protrusions and dispersing the current through the mesh structure formed by the multiple second metal wires 420, the current transmission path can be significantly shortened, resistance loss reduced, and electrolysis efficiency significantly improved.

[0066] As another example, the electrolytic cell plate 10 can be configured as a bipolar plate.

[0067] like Figure 7 As shown, in one embodiment, the electrode body 100 has a first surface 101 and a second surface 102 disposed opposite to each other. Each second metal wire 420 includes a plurality of first protrusions 421 and a plurality of second protrusions 422 arranged alternately in sequence. The protrusion direction of the first protrusions 421 is opposite to the protrusion direction of the second protrusions 422. The first protrusions 421 and the second protrusions 422 are respectively configured as conductive portions 300. At least a portion of the first protrusions 421 protrudes from the first surface 101 of the electrode body 100, and at least a portion of the second protrusions 422 protrudes from the second surface 102 of the electrode body 100.

[0068] The first protrusion 421, serving as the first conductive end 321, protrudes from the first surface 101 of the electrode body 100. When the first surface of the electrode body is configured as the anode reaction surface, the first protrusion 421 is used to connect with the external electrode of the anode chamber. Electrons generated by the anodic oxidation reaction on the first surface 101 of the electrode body 100 are conducted to the external electrode through the first protrusion 421. The second protrusion 422, serving as the second conductive end 322, protrudes from the second surface 102 of the electrode body 100. When the second surface 102 of the electrode body 100 is configured as the cathode reaction surface, it is used to connect with the external electrode of the cathode chamber. Electrons from the external electrode are introduced into the cathode chamber through the second protrusion 422, which provides electrons for the cathode reduction reaction. The mesh structure formed by multiple second metal wires 420 serves as a current channel, enabling directional electron transport and ensuring, to a certain extent, the synchronous and efficient reaction between the anode and cathode chambers. Separating the anode and cathode chambers by the electrode body 100 also solves the safety problem caused by electrolyte mixing.

[0069] like Figure 7 , Figure 8As shown, in one embodiment, in the first direction D1, the projection surfaces of multiple second metal wires 420 cover the projection surfaces of the electrode body 100.

[0070] Electrolytic cell electrode 10 is applied to the electrolysis unit. The first direction D1 can be used to indicate the direction in which the electrolytic cell electrode 10 is arranged relative to the electrolysis unit (such as the anode chamber, cathode chamber, etc.). In the first direction, the projection surface of the mesh structure formed by multiple second metal wires 420 covers the projection surface of the electrode body 100. This is used to achieve comprehensive support for the electrode body 100, distributing the support points evenly across the entire metal structure, thereby improving the overall stability of the electrolytic cell electrode 10. In this way, it can also ensure to a certain extent that the reaction zones of the electrode body 100 and the electrolysis unit opposite to each other have metal wire structures to provide current channels, thereby improving current density and current conduction efficiency, and thus improving electrolysis efficiency.

[0071] In the embodiments of this application, the projection surface of the conductive layer covers the projection surface of the electrode body 100. In addition to the projection surface of multiple second metal wires 420 covering the projection surface of the electrode body 100, it can also be that the projection surface of multiple conductive parts 300 in the first direction D1 covers the projection surface of the electrode body 100; or the projection surface of the mesh structure formed by multiple conductive parts 300 connected by multiple first metal wires 410 in the first direction D1 covers the projection surface of the electrode body 100. The specific configuration can be based on actual conditions and is not limited here.

[0072] like Figure 8 As shown, in another aspect, embodiments of this application also provide an electrolysis unit, which includes an anode plate 21, a positive electrode 22, a diaphragm 23, a negative electrode 24, and a cathode plate 25 arranged sequentially along a first direction D1. At least one of the anode plate 21 and the cathode plate 25 adopts the electrolytic cell electrode plate 10 as described above.

[0073] The anode plate 21 serves as a current collector, providing structural support and uniformly transmitting current from the external power source to the surface of the anode electrode 22, resulting in a uniform current density distribution. During electrolysis, an oxidation reaction occurs on the surface of the anode electrode 22, generating oxygen, chlorine, etc. The cathode electrode 24 undergoes a reduction reaction and receives electrons from the cathode plate 25, generating hydrogen, etc. The cathode plate 25 serves as a current collector, collecting electrons from the external circuit and uniformly conducting them to the surface of the cathode electrode 24. The diaphragm 23 selectively allows ion migration to complete the current loop while simultaneously preventing the mixing of anode and cathode products. At least one of the anode plate 21 and cathode plate 25 adopts the electrolytic cell electrode plate 10 as described in the above embodiment.

[0074] The specific structure of the electrolytic cell electrode plate 10 is as described in the above embodiments. Since the anode plate 21 and cathode plate 25 adopt all the technical solutions of all the above embodiments, they have at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0075] like Figure 8 , Figure 9 As shown, embodiments of this application also provide an electrolytic cell, which includes multiple electrolytic units as described above, stacked along a first direction D1. The electrolytic cell electrode 10 has a first surface 101 and a second surface 102 disposed opposite to each other. The first surface 101 is configured as the anode reaction region of one of two adjacent electrolytic units, and the second surface 102 is configured as the cathode reaction region of the other of the two adjacent electrolytic units.

[0076] For example, there are multiple electrolysis units, which are stacked along the first direction D1.

[0077] Electrolytic cell electrode 10 can be used as a bipolar plate. Electrolytic cell electrode 10 has a first surface 101 and a second surface 102 arranged opposite to each other. The first surface 101 is configured as the anode reaction zone of one of two adjacent electrolytic units, and the second surface 102 is configured as the cathode reaction zone of the other of the two adjacent electrolytic units. An electrolytic unit can be an electrolytic chamber, and multiple electrolytic units can be connected in series or in parallel. In series connection, adjacent electrolytic units are connected by a bipolar plate; that is, the cathode plate 25 of the preceding electrolytic unit shares the same bipolar plate with the anode plate 21 of the following electrolytic unit. The anode plate 21 of the first electrolytic unit is connected to the positive terminal of the power supply, the cathode plate 25 is connected to the anode plate 21 of the second electrolytic unit, and so on, with the cathode plate 25 of the last electrolytic unit connected to the negative terminal of the power supply, forming a series circuit of "anode → bipolar plate cathode / anode → cathode". When connected in parallel, the anode plates 21 of all electrolysis units are connected to the positive terminal of the power supply, and the cathode plates 25 are connected to the negative terminal of the power supply, forming a parallel circuit.

[0078] like Figure 9As shown, in one embodiment, the electrolytic cell further includes a first end plate 31, a second end plate 32, connecting rods 33, disc springs 34, and nuts 35. The first end plate 31 and the second end plate 32 are spaced apart along a first direction D1, and multiple electrolytic units are arranged between the first end plate 31 and the second end plate 32 along the first direction D1. There are multiple connecting rods 33, which can be connected to multiple electrolytic units. Each connecting rod 33 has its two ends connected to the first end plate 31 and the second end plate 32, respectively. One end of each connecting rod 33 is connected and fixed to the first end plate 31 via a disc spring 34 and a nut 35, and the other end is similarly connected and fixed to the second end plate 32 via a disc spring 34 and a nut 35, thereby improving the overall stability of the electrolytic cell structure.

[0079] The specific structure of the electrolytic cell is as described in the above embodiments. Since this electrolytic cell 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.

[0080] 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 electrolytic cell electrode plate (10), characterized in that, include: The electrode body (100) is made of non-metallic insulating material; An electrode frame (200) is provided surrounding the electrode plate body (100); The conductive layer includes a plurality of conductive portions (300) connected as one unit, the plurality of conductive portions (300) being embedded within the electrode body (100), and at least a portion of the conductive portions (300) being disposed protruding from at least one side of the electrode body (100).

2. The electrolytic cell electrode plate (10) as described in claim 1, characterized in that, The conductive part (300) has a connecting part (310) and at least one conductive end, wherein at least one conductive end is integrally disposed with the connecting part (310), and the connecting part (310) is embedded in the electrode body (100); At least one of the conductive portions (300) is provided on the surface of the electrode body (100).

3. The electrolytic cell electrode plate (10) as described in claim 2, characterized in that, The electrode body (100) has a first surface (101) and a second surface (102) arranged opposite to each other. The conductive part (300) has two conductive ends, namely a first conductive end (321) and a second conductive end (322). At least a portion of the first conductive end (321) protrudes from the first surface (101) of the electrode body (100), and at least a portion of the second conductive end (322) protrudes from the second surface (102) of the electrode body (100).

4. The electrolytic cell electrode plate (10) as described in claim 2, characterized in that, The conductive layer includes multiple first metal wires (410), which pass through multiple conductive parts (300) and are arranged to connect with the multiple conductive parts (300) to form a mesh.

5. The electrolytic cell electrode plate (10) as described in claim 4, characterized in that, The connecting part (310) is provided with a plurality of connecting holes (311), and the plurality of connecting holes (311) on each connecting part (310) are interconnected; The first metal wire (410) is disposed through the connecting hole (311).

6. The electrolytic cell electrode plate (10) as described in claim 2, characterized in that, The conductive part (300) is spring-shaped; At least one conductive end of the conductive part (300) is retractable and protrudes from the surface of the electrode body (100).

7. The electrolytic cell electrode plate (10) as described in any one of claims 1 to 6, characterized in that, The conductive part (300) is any one or a combination of dumbbell shape, spring shape, column shape, cylindrical shape, cone shape, and truncated shape.

8. The electrolytic cell electrode plate (10) as described in claim 1, characterized in that, The conductive layer also includes multiple second metal wires (420), which are arranged in a crisscross pattern to form a mesh. Wherein, all or part of the second metal wire (420) is configured as the conductive layer; Alternatively, the conductive portion (300) may be formed at the connection position of the multiple second metal wires (420); Alternatively, the conductive portion (300) may be formed on the surface of the second metal wire (420).

9. The electrolytic cell electrode plate (10) as described in claim 8, characterized in that, The electrode body (100) has a first surface (101) and a second surface (102) arranged opposite to each other. Each second metal wire (420) includes a plurality of first protrusions (421) and a plurality of second protrusions (422) arranged alternately in sequence. The protrusion direction of the first protrusions (421) is opposite to the protrusion direction of the second protrusions (422). The first protrusion (421) and the second protrusion (422) are respectively configured as the conductive portion (300). The first protrusion (421) is provided to protrude at least part of the first surface (101) of the electrode body (100), and the second protrusion (422) is provided to protrude at least part of the second surface (102) of the electrode body (100).

10. The electrolytic cell electrode plate (10) as described in claim 8, characterized in that, In the first direction, the projection surfaces of the multiple second metal wires (420) cover the projection surface of the electrode body (100).

11. An electrolysis unit, characterized in that, The electrolysis unit includes an anode plate (21), a positive electrode (22), a diaphragm (23), a negative electrode (24), and a cathode plate (25) arranged sequentially along a first direction. At least one of the anode plate (21) and the cathode plate (25) shall be an electrolytic cell electrode plate (10) as described in any one of claims 1 to 10.

12. An electrolytic cell, characterized in that, Includes the electrolysis unit as described in claim 11, wherein there are multiple electrolysis units, and the multiple electrolysis units are stacked along a first direction; The electrolytic cell electrode plate (10) has a first surface (101) and a second surface (102) arranged opposite to each other. The first surface (101) is configured as the anode reaction zone of one of the two adjacent electrolytic units, and the second surface (102) is configured as the cathode reaction zone of the other of the two adjacent electrolytic units.

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