Electrolytic hydrogen production polar plate with pressing sheets, electrolytic bath and electrolytic equipment

Abstract

The utility model provides an electrolytic hydrogen production polar plate with pressing sheets, an electrolytic bath and electrolytic equipment, and relates to the technical field of electrolytic hydrogen production. The electrolytic hydrogen production polar plate with the pressing sheet comprises a polar plate body, an elastic support body and the pressing sheet, a mounting groove is formed in the middle of one side of the polar plate body; the shape of the mounting groove is matched with that of the elastic supporting body; the elastic support body is placed in the mounting groove; a clamping groove is formed in one side, close to the edge, of the polar plate body; the clamping groove is communicated with the mounting groove; one end of the pressing piece is clamped with the clamping groove in a matched mode, and the other end of the pressing piece is connected to the edge of the elastic supporting body in a pressing mode. The stability of the elastic support body in the mounting groove is ensured through the matching of the pressing sheet and the clamping groove, and particularly, the elastic support body can be effectively prevented from slipping from the groove under the condition that the polar plate is vertically mounted, so that the mounting process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic hydrogen production, and particularly relates to an electrolytic hydrogen production electrode plate with a pressing sheet, an electrolytic cell and electrolytic equipment. Background Art

[0002] In the technical field of electrolytic water hydrogen production, the design of the electrode plate is crucial for improving the electrolysis efficiency and reducing energy consumption. The traditional electrode plate design usually includes an electrode plate body, and a groove for installing an elastic support body is arranged on one side of the electrode plate body. The elastic support body is composed of an elastic metal mesh and a frame, and the frame wraps around the edge of the elastic metal mesh. This design ensures the rigidity of the elastic support body. However, in the existing technology, during the assembly process of the electrolytic cell, especially when the electrode plate is vertically installed, due to the action of gravity, the elastic support body is likely to slip out of the groove. This not only increases the installation difficulty but also may lead to an extended assembly time, thus affecting the production efficiency. Additionally, it may not be possible to ensure the stable fixation of the elastic support body during use, especially when the electrolytic cell is operating, due to the pressure changes generated during the electrolysis process, the elastic support body may shift, affecting the overall performance of the electrolytic cell. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose proposed by the utility model is to provide an electrode plate that can ensure the stable fixation of the elastic support body during installation and use and reduce the installation difficulty.

[0004] In a first aspect, an electrolytic hydrogen production electrode plate with a pressing sheet is provided, including: an electrode plate body, an elastic support body, and a pressing sheet;

[0005] A mounting groove is arranged in the middle of one side of the electrode plate body; the shape of the mounting groove is adapted to the shape of the elastic support body;

[0006] The elastic support body is placed in the mounting groove;

[0007] A clamping groove is arranged on one side of the electrode plate body, close to the edge;

[0008] The clamping groove communicates with the mounting groove;

[0009] One end of the pressing sheet is adaptively clamped with the clamping groove, and the other end of the pressing sheet is pressed against the edge of the elastic support body.

[0010] Further, the pressing sheet includes a clamping portion and a first pressing portion connected in sequence;

[0011] The shape of the clamping portion is adapted to the shape of the clamping groove;

[0012] The clamping portion is adaptively clamped with the clamping groove, and the first crimping portion is crimped on the edge of the elastic support body.

[0013] Furthermore, an elastic crimping portion is further included;

[0014] The elastic crimping portion is arranged at one end of the first crimping portion far from the clamping portion and close to the side of the elastic support body.

[0015] Furthermore, the elastic crimping portion is formed by bending from one end of the first crimping portion far from the clamping portion towards the elastic support body.

[0016] Furthermore, there are multiple pressing sheets and multiple clamping grooves, and they are arranged in one-to-one correspondence; the multiple clamping grooves are arranged at intervals.

[0017] Furthermore, an electrolyte inlet and a hydrogen outlet penetrating through the plate body are arranged at the edge of the plate body.

[0018] Furthermore, the clamping groove is arranged close to the electrolyte inlet and the hydrogen outlet, and each electrolyte inlet and hydrogen outlet corresponds to one clamping groove;

[0019] The clamping groove communicates the electrolyte inlet and the hydrogen outlet with the installation groove.

[0020] Furthermore, a support protrusion is arranged at the bottom of the clamping groove; the top of the support protrusion contacts the pressing sheet;

[0021] There are multiple support protrusions, and the multiple support protrusions are arranged at intervals, and a fluid channel is formed between two adjacent support protrusions.

[0022] In a second aspect, an electrolytic cell is provided, including the electrolytic hydrogen production plate with a pressing sheet as described in the above technical solution.

[0023] In a third aspect, an electrolysis device is provided, including the electrolytic cell as described in the above technical solution.

[0024] The embodiments of the present invention have the following advantages or beneficial effects:

[0025] 1. An electrolytic hydrogen production electrode plate with a pressing piece, comprising an electrode plate body, an elastic support body and a pressing piece; a mounting groove is provided in the middle of one side of the electrode plate body, and the shape of the mounting groove is adapted to the shape of the elastic support body; the elastic support body is placed in the mounting groove; a clamping groove is provided near the edge on one side of the electrode plate body; one end of the pressing piece is adapted to be clamped with the clamping groove, and the other end is pressed against the edge of the elastic support body. Through the cooperation of the pressing piece and the clamping groove, the stability of the elastic support body in the mounting groove is ensured. Especially when the electrode plate is vertically installed, the elastic support body can be effectively prevented from slipping out of the groove, simplifying the installation process.

[0026] 2. The clamping groove communicates with the mounting groove. Through the communication design of the clamping groove and the mounting groove, the pressing piece can be completely accommodated, making the surface of the pressing piece flush with the surface of the electrode plate body, which not only simplifies the installation process but also improves the overall performance.

[0027] 3. The pressing piece includes a clamping portion and a first pressing portion connected in sequence; the shape of the clamping portion is adapted to the shape of the clamping groove; the clamping portion is adapted to be clamped with the clamping groove, and the first pressing portion is pressed against the edge of the elastic support body. By dividing the pressing piece into a clamping portion and a first pressing portion, the installation of the pressing piece is made more stable, and at the same time, it is convenient for the positioning and fixing of the pressing piece.

[0028] 4. It further includes an elastic pressing portion; an elastic pressing portion is provided at one end of the first pressing portion away from the clamping portion and close to the side of the elastic support body. By adding the elastic pressing portion, the pressure on the elastic support body can be enhanced, ensuring the stability of the elastic support body in the mounting groove.

[0029] 5. The elastic pressing portion is formed by bending one end of the first pressing portion away from the clamping portion towards the elastic support body. Through the bending design of the elastic pressing portion, the pressure on the elastic support body can be increased, ensuring the stability of the elastic support body in the mounting groove, and at the same time simplifying the design of the pressing piece.

[0030] 6. Both the pressing piece and the clamping groove are multiple and are provided in one-to-one correspondence. By providing multiple pressing pieces and clamping grooves, it is ensured that the elastic support body is fully fixed at each position, improving the stability of the entire electrode plate.

[0031] 7. By arranging multiple clamping grooves at intervals, it can be ensured that the elastic support body is evenly fixed at each position, and at the same time, it is beneficial to the flow of electrolyte and gas.

[0032] 8. A support protrusion is provided at the bottom of the clamping groove; the top of the support protrusion contacts the pressing piece. By providing the support protrusion, the position of the pressing piece can be ensured to be stable, and at the same time, the surface of the pressing piece does not protrude from the surface of the electrode plate body, simplifying the installation process and improving the compactness and flatness of the overall structure. Description of the Drawings

[0033] The above and other features and advantages of the present utility model will become more apparent by describing its exemplary embodiments in detail with reference to the accompanying drawings.

[0034] Figure 1 is a schematic structural view of an electrolytic hydrogen production plate with a pressing sheet;

[0035] Figure 2 is an exploded schematic view of an electrolytic hydrogen production plate with a pressing sheet;

[0036] Figure 3 is a schematic structural view of an elastic support in an electrolytic hydrogen production plate with a pressing sheet;

[0037] Figure 4 is an exploded schematic view of an elastic support in an electrolytic hydrogen production plate with a pressing sheet;

[0038] Figure 5 is a schematic structural view of a plate body in an electrolytic hydrogen production plate with a pressing sheet;

[0039] Figure 6 is Figure 5 an enlarged view of part A in;

[0040] Figure 7 is a schematic structural view of a pressing sheet in an electrolytic hydrogen production plate with a pressing sheet.

[0041] Among them, the reference numerals are explained as follows:

[0042] 1. Plate body, 2. Elastic support, 3. Pressing sheet, 4. Installation groove, 5. Clamping groove, 6. Electrolyte inlet, 7. Hydrogen outlet, 8. Support protrusion, 9. Grid;

[0043] 21. Elastic metal mesh, 22. Frame,

[0044] 31. Clamping part, 32. First pressing part, 33. Elastic pressing part. Specific embodiments

[0045] Now, the exemplary embodiments will be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this utility model will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their detailed descriptions will be omitted.

[0046] The terms "a", "an", "the", and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "comprising" and "having" are used to mean an open inclusion and refer to the possibility of the existence of additional elements / components / etc. in addition to the listed elements / components / etc.

[0047] In recent years, with the gradual reduction of the cost of renewable energy, the demand for hydrogen production from renewable energy has increased significantly. The alkaline water electrolyzer is the core equipment for converting electricity into hydrogen. The main principle is that when direct current is passed through an aqueous solution of potassium hydroxide or sodium hydroxide, electrochemical reactions will occur on the surfaces of the anode and cathode. Oxygen is produced at the anode and hydrogen is produced at the cathode.

[0048] Example 1

[0049] Figure 1 is a schematic structural diagram of an electrolytic hydrogen production plate with a pressing sheet; Figure 2 is an exploded schematic diagram of an electrolytic hydrogen production plate with a pressing sheet; Figure 3 is a schematic structural diagram of an elastic support in an electrolytic hydrogen production plate with a pressing sheet; Figure 4 is an exploded schematic diagram of an elastic support in an electrolytic hydrogen production plate with a pressing sheet; Figure 5 is a schematic structural diagram of a plate body in an electrolytic hydrogen production plate with a pressing sheet; Figure 6 is Figure 5 the enlarged view of part A in Figure 7 is a schematic structural diagram of a pressing sheet in an electrolytic hydrogen production plate with a pressing sheet. The above schematic diagrams are not in the actual proportion of the actual product.

[0050] As Figures 1 to 7 shown, an electrolytic hydrogen production plate with a pressing sheet according to the first embodiment of the present utility model includes: a plate body 1, an elastic support 2, and a pressing sheet 3.

[0051] Among them, the plate body 1 is an important component in the electrolytic water hydrogen production equipment. It is mainly used to support and fix the support body and the electrode grid 9, provide a flow path for the electrolyte at the same time, and contribute to the collection and discharge of gas.

[0052] The plate body 1 is usually made of corrosion-resistant materials to ensure stable operation in the electrolytic environment for a long time. The plate body 1 is generally in a flat shape (it can be circular or square), has a certain thickness to withstand mechanical stress and the pressure generated during the electrolysis process. It varies in size according to the design of the electrolyzer and the required electrolysis area.

[0053] On one side of the plate body 1, there is an installation groove 4 for installing the elastic support 2. The size and shape of the installation groove 4 are precisely designed to match the border 22 of the elastic support 2 to ensure a good fit.

[0054] An electrolyte inlet 6 is provided on the edge of the plate body 1 for introducing the electrolyte. At the same time, a gas outlet is also provided for collecting and discharging the generated gas (usually hydrogen and oxygen). The electrolyte inlet 6 and the gas outlet are through holes penetrating the plate body 1. The electrolyte inlet 6 is usually designed to be circular or elliptical to ensure the smooth inflow of the electrolyte into the electrolytic cell. The electrolyte inlet 6 is usually provided on the edge of the plate body 1 to facilitate connection with an external pipeline. Such a design helps the electrolyte to be evenly distributed throughout the electrolytic cell, ensuring the efficient progress of the electrolysis process. The gas outlet is also designed to be circular or elliptical to ensure the smooth discharge of the gas from the electrolytic cell. The gas outlet is also provided on the edge of the plate body 1, usually opposite to the electrolyte inlet 6, for facilitating the collection and discharge of the gas. Both the electrolyte inlet 6 and the gas outlet are provided on the edge of the plate body 1, which is convenient for connection with an external pipeline or a gas collection pipeline, and also reduces the space occupied inside the electrolytic cell. These through holes are usually distributed at intervals to ensure the uniform distribution of the electrolyte and the gas in the electrolytic cell, thereby improving the electrolysis efficiency.

[0055] The plate body 1 is used to support the electrode grid 9 and the elastic support 2 and fix them in appropriate positions to ensure the close fit of the electrode grid 9 and the diaphragm during the electrolysis process.

[0056] The elastic support 2 includes: an elastic metal mesh 21 and a frame 22. The elastic metal mesh 21 is woven from multiple strands of metal wires, and the entire woven planar mesh structure is formed into a wavy shape; the frame 22 is fixedly arranged on the edge of the elastic metal mesh 21. The elastic metal mesh 21 is designed as a mesh structure woven from multiple strands of metal wires and is set in a wavy shape, which not only provides physical support for the electrode grid 9, but also, due to its own elastic characteristics, can effectively adapt to the possible pressure changes during the electrolysis process, such as thermal expansion and contraction caused by temperature changes or reaction pressure fluctuations, ensuring uniform and stable contact with other components in the electrolytic cell, thereby reducing the contact resistance and energy loss. As Figure 4 shown, the frame 22 includes two overlapping annular plates. The two upper and lower annular plates sandwich the edge of the elastic metal mesh 21 in the middle, and the two upper and lower annular plates are welded and fixedly installed together. The electrode grid 9 and the elastic metal mesh 21 are jointly installed in the frame 22 to form an integral body.

[0057] A clamping groove 5 is provided on one side of the plate body 1, close to the edge. The clamping groove 5 is provided close to the electrolyte inlet 6 and the hydrogen outlet 7, and each electrolyte inlet 6 and hydrogen outlet 7 corresponds to a clamping groove 5.

[0058] The clamping groove 5 communicates with the installation groove 4. In order to ensure that the pressing piece 3 can stably fix the elastic support 2 and make the surface of the pressing piece 3 flush with the surface of the plate body 1, this not only simplifies the installation process but also improves the overall performance. Specifically:

[0059] Snap groove 5: It is set on one side of the plate body 1, near the edge, and is used to fix the pressing piece 3. Each snap groove 5 corresponds to an electrolyte inlet 6 or a hydrogen outlet 7.

[0060] Mounting groove 4: It is set on one side of the plate body 1 (on the same side of the plate body 1 as the snap groove 5), and is used to mount the elastic support 2. Its shape matches the outer frame 22 of the elastic support 2.

[0061] Pressing piece 3: One end is fitted and snapped into the snap groove 5, and the other end is pressed against the edge of the elastic support 2 to ensure the stable fixation of the elastic support 2 in the mounting groove 4.

[0062] The characteristics of this design are as follows:

[0063] Simplify the installation process: The snap groove 5 is connected to the mounting groove 4, so that the pressing piece 3 can be easily installed in place without additional operations to adjust the position of the pressing piece 3, making the whole installation process simpler and faster.

[0064] Improve the overall performance: The surface of the pressing piece 3 is flush with the surface of the plate body 1, which means that there are no protruding parts that may interfere with the flow of the electrolyte or cause obstacles during the assembly process, thus optimizing the fluid management and improving the electrolysis efficiency.

[0065] Enhance the stability: The pressing piece 3 is fixed through the snap groove 5 to ensure that the elastic support 2 will not slip off due to gravity even when the electrolytic cell is installed vertically, thus ensuring the stability of the elastic support 2 during the electrolysis process.

[0066] At the same time, the electrolyte inlet 6 is connected to the mounting groove 4 through the snap groove 5, and the electrolyte can flow smoothly into the area of the mounting groove 4 through these channels, thus ensuring the uniform distribution of the electrolyte on the plate. The hydrogen outlet 7 is also connected to the mounting groove 4 through the snap groove 5, and the generated hydrogen can be discharged smoothly from the area of the mounting groove 4 through these channels.

[0067] One end of the pressing piece 3 is fitted and snapped into the snap groove 5, and the other end of the pressing piece 3 is pressed against the edge of the elastic support 2.

[0068] The design of the pressing piece 3 is to ensure the stability of the elastic support 2 in the mounting groove 4, especially when the plate is installed vertically. The following is a detailed description of how the pressing piece 3 cooperates with the plate body 1:

[0069] The basic structure of the pressing piece 3

[0070] The pressing piece 3 generally includes two main parts: a snap-in part 31 and a first pressing part 32. Both the snap-in part 31 and the first pressing part 32 are sheet-shaped.

[0071] Snap - connection part 31: The shape of the snap - connection part 31 matches the snap - groove 5 on the plate body 1, and is used to fix the pressing piece 3 on the plate body 1.

[0072] First crimping part 32: The first crimping part 32 is located at the other end of the snap - connection part 31, and is used to press the edge of the elastic support 2 to ensure the stable fixation of the elastic support 2 in the installation groove 4.

[0073] Installation process

[0074] Place the elastic support 2: First, place the elastic support 2 in the installation groove 4 on one side of the plate body 1, ensuring that the frame 22 of the elastic support 2 matches the shape of the installation groove 4.

[0075] Install the pressing piece 3: One end of the pressing piece 3 (i.e., the snap - connection part 31) is adaptively snap - connected with the snap - groove 5 on the plate body 1. The design of the snap - connection part 31 enables it to be firmly fixed in the snap - groove 5, ensuring that the pressing piece 3 does not move easily.

[0076] Press the elastic support 2: The other end of the pressing piece 3 (i.e., the first crimping part 32) is then crimped on the edge of the elastic support 2. In this way, the first crimping part 32 presses the elastic support 2 in the installation groove 4, preventing the elastic support 2 from slipping out of the groove due to gravity during vertical installation.

[0077] Optional improved design

[0078] Elastic crimping part 33: In some designs, an elastic crimping part 33 can be provided at the end of the first crimping part 32 far from the snap - connection part 31 to enhance the pressure on the elastic support 2. This elastic crimping part 33 can be formed by bending the end of the first crimping part 32 far from the snap - connection part 31 towards the elastic support 2.

[0079] Multiple pressing pieces 3: If necessary, multiple snap - grooves 5 and corresponding pressing pieces 3 can be provided at different positions on the plate body 1 to ensure that the elastic support 2 is fully fixed at each position. The pressing pieces 3 and the snap - grooves 5 are set in a one - to - one correspondence.

[0080] Through the above design, the pressing piece 3 can effectively fix the elastic support 2, ensuring the stability of the elastic support 2 in the installation groove 4, thus simplifying the assembly process of the electrolytic cell and improving the overall performance.

[0081] The material of the pressing piece 3 needs to have a certain strength and toughness to ensure that the pressing piece 3 can withstand the pressure when fixing the elastic support 2 and maintain its shape during long - term use. Commonly used materials include, but are not limited to, stainless steel, aluminum alloy, etc., which have good mechanical strength and corrosion resistance.

[0082] A supporting protrusion 8 is provided at the bottom of the snap-in groove 5; the top end of the supporting protrusion 8 contacts the pressing piece 3. It provides support for the pressing piece 3 to ensure the stable position of the pressing piece 3, and the surface of the pressing piece 3 does not protrude from the surface of the electrode plate body 1.

[0083] There are multiple supporting protrusions 8, and the multiple supporting protrusions 8 are arranged at intervals, forming a fluid channel between two adjacent supporting protrusions 8. It helps the electrolyte and the generated gas to flow smoothly in the area of the snap-in groove 5.

[0084] Embodiment 2

[0085] An electrolytic cell includes an electrolytic hydrogen production electrode plate with a pressing piece as described in Embodiment 1 above.

[0086] In addition to including an electrolytic hydrogen production electrode plate with a pressing piece, the electrolytic cell also includes several other key components to ensure the efficient progress of the electrolytic water hydrogen production process. The following are some common components:

[0087] Diaphragm: The diaphragm is a very important component in the electrolytic cell. Its function is to divide the electrolytic cell into an anode area and a cathode area, and at the same time allow ions to pass through while preventing gas mixing. The diaphragm can be an alkaline diaphragm (for ALK electrolytic cells), an anion exchange membrane (for AEM electrolytic cells), or a proton exchange membrane (for PEM electrolytic cells).

[0088] Pole network 9: The pole network 9 is located on both sides of the diaphragm and fits with the elastic support body 2. The function of the pole network 9 is to provide a path for current transmission and promote the evolution of gas. The pole network 9 can be a nickel mesh or a mesh structure made of other materials containing elements such as platinum, iridium, ruthenium, titanium, nickel, etc.

[0089] Sealing ring: To ensure the sealing of the electrolytic cell and avoid electrolyte leakage and gas mixing, a sealing ring is used in the electrolytic cell. The sealing ring is located between two electrode plates to ensure the correct installation of the diaphragm and the sealing of the entire electrolytic cell.

[0090] Connection pipes: The electrolytic cell also requires connection pipes for introducing the electrolyte and collecting the generated hydrogen and oxygen. These pipes are usually connected to the electrolyte inlet 6 and the hydrogen outlet 7 on the electrode plate body 1.

[0091] External pipe system: In addition to the connection pipes, the electrolytic cell also requires a complete set of external pipe systems to supply the electrolyte, regulate the pressure and temperature, and collect the generated gas.

[0092] Control system: To monitor and control various parameters (such as current, voltage, temperature, etc.) during the electrolysis process, the electrolytic cell is usually equipped with a control system.

[0093] Auxiliary components: Include sensors, valves, heaters, coolers, etc., for monitoring and adjusting the conditions during the electrolysis process.

[0094] In summary, the electrolytic cell is a complex system. In addition to the electrolytic hydrogen production electrode plates with press tablets, it also needs to include a diaphragm, a pole network 9, sealing rings, connecting pipes, an external pipe system, a control system, and other auxiliary components to ensure the efficient and safe progress of the electrolytic water hydrogen production process.

[0095] Embodiment III

[0096] An electrolytic device includes the electrolytic cell described in Embodiment II above.

[0097] In the embodiments of the present utility model, the term "a plurality of" refers to two or more, unless otherwise clearly defined. Terms such as "installed", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0098] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as a limitation to the embodiments of the present utility model.

[0099] In the description of this specification, the description of terms such as "one embodiment", "one preferred embodiment", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0100] The above are only the preferred embodiments of the embodiments of the present utility model and are not used to limit the embodiments of the present utility model. For those skilled in the art, the embodiments of the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model shall be included within the protection scope of the embodiments of the present utility model.

Claims

1. An electrolytic hydrogen production electrode plate with a pressing sheet, characterized in that, Comprising: A plate body (1), an elastic support body (2), and a pressing piece (3); In the middle of one side of the plate body (1), an installation groove (4) is provided; the shape of the installation groove (4) is adapted to the shape of the elastic support body (2); The elastic support body (2) is placed in the installation groove (4); On one side of the plate body (1), near the edge, a clamping groove (5) is provided; The clamping groove (5) communicates with the installation groove (4); One end of the pressing piece (3) is adaptively clamped with the clamping groove (5), and the other end of the pressing piece (3) is pressed against the edge of the elastic support body (2).

2. The electrolytic hydrogen production electrode plate with a tablet according to claim 1, characterized in that The pressing piece (3) includes a clamping portion (31) and a first pressing portion (32) connected in sequence; The shape of the clamping portion (31) is adapted to the shape of the clamping groove (5); The clamping portion (31) is adaptively clamped with the clamping groove (5), and the first pressing portion (32) is pressed against the edge of the elastic support body (2).

3. The electrolytic hydrogen production electrode plate with a pressing sheet according to claim 2, characterized in that, It further includes an elastic pressing portion (33); On the end of the first pressing portion (32) away from the clamping portion (31) and near one side of the elastic support body (2), the elastic pressing portion (33) is provided.

4. The electrolytic hydrogen production electrode plate with a tablet according to claim 3, characterized in that, The elastic pressing portion (33) is formed by bending the end of the first pressing portion (32) away from the clamping portion (31) towards the elastic support body (2).

5. A kind of electrolytic hydrogen production electrode plate with a pressing sheet according to claim 1, characterized in that, Both the pressing piece (3) and the clamping groove (5) are multiple and are arranged in one-to-one correspondence; The multiple clamping grooves (5) are arranged at intervals.

6. The electrolytic hydrogen production electrode plate with a tablet according to claim 1, characterized in that, At the edge of the plate body (1), an electrolyte inlet (6) and a hydrogen outlet (7) penetrating through the plate body (1) are provided.

7. The electrolytic hydrogen production electrode plate with a pressing sheet according to claim 6, characterized in that, The clamping groove (5) is arranged near the electrolyte inlet (6) and the hydrogen outlet (7), and each electrolyte inlet (6) and hydrogen outlet (7) corresponds to one clamping groove (5); The clamping groove (5) communicates the electrolyte inlet (6) and the hydrogen outlet (7) with the installation groove (4).

8. The electrolytic hydrogen production electrode plate with a pressing sheet according to claim 1, characterized in that, At the bottom of the clamping groove (5), a support protrusion (8) is provided; the top of the support protrusion (8) contacts the pressing piece (3); The support protrusions (8) are multiple, and the multiple support protrusions (8) are arranged at intervals, and a fluid channel is formed between two adjacent support protrusions (8).

9. An electrolytic cell, characterized in that, Comprising the electrolytic hydrogen production plate with a pressing piece according to any one of claims 1 to 8.

10. An electrolysis device, characterized in that, Comprising the electrolytic cell according to claim 9.

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