Electrolytic cell and hydrogen production plant

Abstract

The application discloses an electrolytic cell and a hydrogen production device. The electrolytic cell comprises a first end plate, a second end plate and a shell, the first end plate and the second end plate are oppositely arranged in a first direction; the shell has a fixed end and a movable end oppositely arranged in the first direction; the first end plate is fixedly connected with the fixed end, the second end plate is movably connected with the movable end, and the second end plate can move in the first direction. By fixing the first end plate with the fixed end of the shell, movably connecting the second end plate with the movable end of the shell, and enabling the second end plate to move in the first direction, the shell can adapt to the deformation amount of the pole piece assembly of the electrolytic cell due to thermal expansion and cold shrinkage. By movably connecting the second end plate with the movable end of the shell, the displacement compensation function of the movable connection structure reduces the tensile stress borne by the shell, thereby preventing the shell from being cracked or broken due to stress.

Description

Technical Field

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

[0002] An electrolytic cell consists of a shell and two opposing end plates, with each end of the shell connected to one of the end plates. During operation, the electrode assembly of the electrolytic cell is susceptible to thermal expansion and contraction due to temperature fluctuations, which generates strong tensile forces in the direction of the end plates, causing dimensional deformation and posing a risk of the shell cracking. Utility Model Content

[0003] The main objective of this application is to propose an electrolyzer and hydrogen production equipment that aims to improve the problem of the electrolyzer shell being torn.

[0004] To achieve the above objectives, the electrolytic cell proposed in this application includes a first end plate, a second end plate, and a shell. The first end plate and the second end plate are disposed opposite to each other in a first direction. The shell has a fixed end and a movable end disposed opposite to each other in the first direction. The first end plate is fixedly connected to the fixed end, the second end plate is movably connected to the movable end, and the second end plate is movable in the first direction.

[0005] In one embodiment, the active end and the second end plate are magnetically connected.

[0006] In one embodiment, the movable end is provided with a first magnetic attracting element, and the second end plate is a metal part, wherein the first magnetic attracting element is magnetically connected to the second end plate.

[0007] In one embodiment, the second end plate is provided with a limiting groove, and the first magnetic attractor is located in the limiting groove; The second end plate has a main body surface facing the first end plate. On a plane perpendicular to the main body surface, the size of the projection of the first magnetic member in the first direction is smaller than the size of the limiting groove in the first direction.

[0008] In one embodiment, the movable end is provided with a metal sheet, and the second end plate is provided with a second magnetic attractor on the side facing the housing, the second magnetic attractor being magnetically connected to the metal sheet; The second end plate has a main board surface facing the first end plate, and on a plane perpendicular to the main board surface, the size of the projection of the metal sheet in a first direction is larger than the size of the second magnetic member in the first direction.

[0009] In one embodiment, the second magnetic element is embedded in the second end plate.

[0010] In one embodiment, one of the movable end and the second end plate is provided with a plug hole, at least a portion of which extends along the first direction; the other of the movable end and the second end plate is provided with a plug-in, which is inserted into the plug hole.

[0011] In one embodiment, the movable end is provided with the insertion hole, and the insertion member includes: A column, one end of which is connected to the second end plate, and the other end of which passes through the insertion hole and can move within the insertion hole along the first direction; and An end is connected to one end of the column away from the second end plate and located on the side of the housing opposite to the second end plate; the second end plate has a side facing the housing, on which the projected area of ​​the end is larger than the projected area of ​​the column.

[0012] In one embodiment, the insertion hole includes: A limiting hole extends along the first direction, and the column passes through the limiting hole; in the direction perpendicular to the first direction, the size of the limiting hole is adapted to the size of the column; and A connecting hole is provided, which is connected to one end of the limiting hole. The projected area of ​​the connecting hole on the side is not less than the projected area of ​​the end on the side.

[0013] In one embodiment, the insertion hole extends through the end face of the movable end away from the fixed end.

[0014] In one embodiment, the movable end is further provided with a connecting post on the side opposite to the second end plate, and the electrolytic cell further includes an elastic element, one end of which is connected to the connecting post and the other end of which is connected to the end.

[0015] In one embodiment, the insertion hole includes a T-shaped hole, and the insertion member includes a T-shaped block; The T-shaped hole penetrates the second end plate on the side facing the first end plate; and / or, the T-shaped hole penetrates the second end plate on the side away from the first end plate.

[0016] This application also proposes a hydrogen production apparatus, including the aforementioned electrolyzer.

[0017] This application fixes the first end plate to the fixed end of the shell and movably connects the second end plate to the movable end of the shell. The second end plate can move in the first direction, which allows the shell to adapt to the deformation of the electrode assembly of the electrolytic cell due to thermal expansion and contraction. By movably connecting the second end plate to the movable end of the shell, the displacement compensation function of the movable connection structure reduces the tensile stress borne by the shell, thereby preventing the shell from cracking or breaking due to stress. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a three-dimensional schematic diagram of the exploded structure of the electrolytic cell of the first embodiment of this application; Figure 2 This is a front view of the exploded structure of the electrolytic cell of the first embodiment of this application; Figure 3 This is a front view of the assembly structure of the electrolytic cell according to the first embodiment of this application; Figure 4 This is a front view of the exploded structure of the electrolytic cell according to the second embodiment of this application; Figure 5 This is a front view of the assembly structure of the electrolytic cell according to the second embodiment of this application; Figure 6 This is a front view of the exploded structure of the electrolytic cell according to the third embodiment of this application; Figure 7 This is a front view of the assembly structure of the electrolytic cell according to the third embodiment of this application; Figure 8 This is a front view of the exploded structure of the electrolytic cell according to the fourth embodiment of this application; Figure 9 This is a front view of the assembly structure of the electrolytic cell according to the fourth embodiment of this application; Figure 10 for Figure 9 A magnified view of a section at point A in the middle; Figure 11 for Figure 10 The left view; Figure 12 This is a three-dimensional structural diagram showing the exploded structure of the electrolytic cell of the fifth embodiment of this application; Figure 13 for Figure 12 A magnified view of a section at point B in the middle; Figure 14 for Figure 12 A magnified view of a section at point C; Figure 15 for Figure 12 Schematic diagram of the assembly process at points B and C; Figure 16 This is a front view of the assembly structure of the sixth embodiment of the electrolytic cell of this application; Figure 17This is a front view of the exploded structure of the sixth embodiment of the electrolytic cell of this application; Figure 18 for Figure 16 The left view; Figure 19 This is a front view of the assembly structure of the seventh embodiment of the electrolytic cell in this application; Figure 20 This is a front view of the exploded structure of the seventh embodiment of the electrolytic cell of this application; Figure 21 for Figure 19 A schematic diagram of the assembly of the connectors and sockets of the electrolytic cell.

[0020] Explanation of icon numbers: 100. First end plate; 200, Second end plate; 201, Limiting groove; 210, Main board surface; 220, Side surface; 300. Housing; 301. Fixed end; 302. Movable end; 310. Insertion hole; 311. Limiting hole; 312. Communicating hole; 410. First magnetic component; 420. Second magnetic component; 500. Metal sheet; 600. Connector; 610. Column; 620. End; 700, Connecting column; 800. Elastic components; 900. Fasteners.

[0021] 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

[0022] 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.

[0023] 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 each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] 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, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If 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.

[0025] Conventional product casing fixing solutions primarily employ rigid screw-based structures. However, because the electrode assemblies in an electrolytic cell are formed by stacked multi-layered chambers, during operation, the electrode assemblies are subject to temperature fluctuations and the influence of climate, easily leading to thermal expansion and contraction. This generates strong tensile forces in the direction parallel to the tie rod, causing dimensional deformation. Conventional rigid fixing structures cannot meet the requirements of this dimensional deformation on the casing, posing a risk of casing cracking.

[0026] To address the aforementioned problems, this application proposes an electrolytic cell. By fixing a first end plate to the fixed end of the shell and movably connecting a second end plate to the movable end of the shell, and by allowing the second end plate to move in a first direction, the shell can adapt to the deformation caused by the thermal expansion and contraction of the electrode assembly in the electrolytic cell. Furthermore, the displacement compensation function of this movable connection structure, through the movable connection of the second end plate to the movable end of the shell, reduces the tensile stress borne by the shell, thereby preventing cracks or fractures caused by stress.

[0027] In some embodiments of this application, please refer to the references. Figures 1 to 8 and reference Figure 12 , Figures 16 to 20 The electrolytic cell includes a first end plate 100, a second end plate 200, and a housing 300. The first end plate 100 and the second end plate 200 are arranged opposite to each other in a first direction. The housing 300 has a fixed end 301 and a movable end 302 arranged opposite to each other in the first direction. The first end plate 100 is fixedly connected to the fixed end 301, and the second end plate 200 is movably connected to the movable end 302, and the second end plate 200 can move in the first direction.

[0028] The electrolytic cell includes an electrode assembly, a first end plate 100, a second end plate 200, and a pull rod. The electrode assembly comprises multiple stacked electrodes, forming a multi-layered chamber structure. The first end plate 100 and the second end plate 200 are respectively located at both ends of the electrode assembly, meaning the multiple layers of electrodes are stacked between the first end plate 100 and the second end plate 200. The pull rod connects to the first end plate 100 and the second end plate 200 at both ends, thereby pressing the multiple layers of electrodes together. The first end plate 100 and the second end plate 200 are positioned opposite each other in a first direction, so the multiple electrodes in the electrode assembly are stacked along this first direction. The first direction forms an angle with the surface of the first end plate 100 facing the second end plate 200, for example, the first direction is perpendicular to the surface of the first end plate 100 facing the second end plate 200.

[0029] The housing 300 refers to the sealed structure that encloses the electrode assembly. Specifically, it can be implemented using a cylindrical structure with corrugated sections, a U-shaped shell with an opening, or a flat plate connecting the first end plate 100 and the second end plate 200 to achieve the effect of sealing the electrode assembly. In some embodiments of this application, the housing 300 has a fixed end 301 and a movable end 302 arranged opposite to each other along a first direction. The first end plate 100 is fixedly connected to the fixed end 301 of the housing 300, and the second end plate 200 is movably connected to the movable end 302 of the housing 300. Specifically, the first end plate 100 and the housing 300 can be connected by fasteners 900, such as screws or clips, or the first end plate 100 and the housing 300 can be connected by welding or other fixed connection methods. The housing 300 can be connected to the surface of the first end plate 100 facing the second end plate 200, or to the surface of the first end plate 100 away from the second end plate 200, and can also be connected to the side surface 220 of the first end plate 100. The side surface 220 of the first end plate 100 refers to the wall surface of the first end plate 100 that connects the surface of the first end plate 100 facing the second end plate 200 and the surface of the first end plate 100 away from the second end plate 200. It is understood that the housing 300 can cover at least a portion of the side surface 220 of the first end plate 100, thereby improving the protection of the first end plate 100 of the electrolytic cell. Furthermore, the second end plate 200 of the electrolytic cell is movably connected to the movable end 302 of the housing 300. This movable connection refers to a mechanical connection that allows the second end plate 200 to have relative displacement relative to the first end plate 100. Specifically, this can be achieved using a magnetic chuck assembly and a guide rail, maintaining connection reliability while providing the second end plate 200 with freedom of movement in the first direction. With this configuration, when the distance between the first end plate 100 and the second end plate 200 changes due to thermal expansion and contraction of the electrode assembly, the second end plate 200 can move relative to the housing 300 by a certain amount, thereby reducing the risk of the second end plate 200 forcibly pulling the housing 300 to deform or even causing the housing 300 to crack. Specifically, the second end plate 200 and the housing 300 can be connected by a sliding connection, a magnetic connection, or an elastic connection via an elastic element 800, so that the second end plate 200 can move relative to the housing 300 in the first direction.

[0030] This application provides installation space for the electrode assembly of the electrolytic cell by arranging the first end plate 100 and the second end plate 200 opposite to each other in a first direction. By fixing the first end plate 100 to the fixed end 301 of the housing 300 and movably connecting the second end plate 200 to the movable end 302 of the housing 300, and by allowing the second end plate 200 to move in the first direction, the housing 300 can adapt to the deformation caused by the thermal expansion and contraction of the electrode assembly of the electrolytic cell. The displacement compensation function of the movable connection structure, through the movable connection between the second end plate 200 and the movable end 302 of the housing 300, reduces the tensile stress borne by the housing 300, thereby preventing the housing 300 from cracking or breaking due to stress. In addition, since the housing 300 is connected to both the first end plate 100 and the second end plate 200, the housing 300 can cover at least a portion of the first end plate 100 and at least a portion of the second end plate 200, thereby maintaining the sealing and stability of the overall structure of the electrolytic cell, reducing the occurrence of medium leakage problems caused by excessive displacement of the end plates, and ensuring that the electrolytic cell still has good reliability when operating under temperature fluctuation conditions.

[0031] In one example, please refer to the reference. Figures 1 to 7 The active end 302 and the second end plate 200 are magnetically connected.

[0032] Specifically, a magnetic attractor can be provided on the second end plate 200, and a metal part for the magnetic attractor can be provided on the movable end 302 of the housing 300, or a magnetic attractor can be directly provided on the movable end 302, and the second end plate 200 can be made of metal, etc.

[0033] By magnetically connecting the movable end 302 to the second end plate 200, the second end plate 200 is allowed to move in the first direction, while the magnetic attraction reduces the tendency for the movable end 302 and the second end plate 200 to separate from each other, thereby improving the stability of the connection between the housing 300 and the second end plate 200.

[0034] In one example, please refer to the reference. Figures 1 to 5 The movable end 302 is provided with a first magnetic suction component 410, and the second end plate 200 is a metal component. The first magnetic suction component 410 is magnetically connected to the second end plate 200.

[0035] The first magnetic attractor 410 refers to a component capable of generating a magnetic field, which can be implemented using a permanent magnet or an electromagnet. Its function is to magnetically attract the second end plate 200 made of metal. The metal component refers to a component made of magnetically conductive materials such as iron, nickel, or cobalt. Its function is to achieve stable attraction with the first magnetic attractor 410 by utilizing the magnetic conductivity of the material itself. The metal component can be in the form of a sheet or a block.

[0036] The magnetic attraction between the first magnetic chuck 410 and the second end plate 200 maintains their connection while allowing the second end plate 200 to slide relative to the movable end 302. By making the second end plate 200 a metal part and correspondingly setting the first magnetic chuck 410 on the movable end 302, the number of magnetic chucks is reduced, simplifying the structure of the magnetic connection. This also eliminates the stringent requirements for dimensional accuracy during assembly and, through the sliding flexible connection mechanism, actively adapts to deformation, reducing the risk of the housing 300 being torn.

[0037] Please refer to the reference. Figures 1 to 3 In one example, the second end plate 200 is provided with a limiting groove 201, and the first magnetic member 410 is located in the limiting groove 201; the second end plate 200 has a main plate surface 210 facing the first end plate 100, and on the plane perpendicular to the main plate surface 210, the size of the projection of the first magnetic member 410 in the first direction is smaller than the size of the limiting groove 201 in the first direction.

[0038] The limiting groove 201 refers to a groove structure provided on the second end plate 200, which can be formed by machining or casting processes, and is used to accommodate the first magnetic member 410 and limit its range of motion. Since the second end plate 200 has a main surface 210 facing the first end plate 100, on the plane perpendicular to the main surface 210, the size of the projection of the first magnetic member 410 in the first direction is smaller than the size of the limiting groove 201 in the first direction, so that the length of the limiting groove 201 in the first direction is greater than the length of the magnetic member in the first direction. Therefore, when the first magnetic member 410 is provided in the limiting groove 201, it can move relative to the limiting groove 201 in the first direction within the limiting groove 201, or the second end plate 200 with the limiting groove 201 can move relative to the housing 300 in the first direction. Therefore, while ensuring that the second end plate 200 can move in the first direction, it can also reduce the risk of the second end plate 200 swaying relative to the housing 300 in other directions that are at an angle to the first direction.

[0039] Please refer to the reference. Figure 6 and Figure 7 In one example, the movable end 302 is provided with a metal sheet 500, and the second end plate 200 is provided with a second magnetic member 420 on the side facing the housing 300. The second magnetic member 420 is magnetically connected to the metal sheet 500. The second end plate 200 has a main plate surface 210 facing the first end plate 100. On the plane perpendicular to the main plate surface 210, the size of the projection of the metal sheet 500 in the first direction is larger than the size of the second magnetic member 420 in the first direction.

[0040] The metal sheet 500 refers to a sheet-like structure with magnetic conductivity, which can be made of iron, nickel or cobalt alloy. The metal sheet 500 is disposed on the surface of the movable end 302 for adsorption contact with the second magnetic attractor 420.

[0041] The second magnetic attractor 420 refers to a magnetic element that can generate a magnetic field. Specifically, it can be implemented using a permanent magnet or an electromagnet. The second magnetic attractor 420 can be disposed inside the second end plate 200, or it can be disposed on the surface of the second end plate 200 facing the housing 300 by means of bonding or welding. Its magnetic field range covers the projection area of ​​the metal sheet 500.

[0042] Since the projection of the metal sheet 500 in the first direction is larger than the size of the second magnetic member 420 in the first direction, when the second end plate 200 is displaced due to the thermal expansion and contraction of the electrode assembly, the second magnetic member 420 can still remain within the coverage area of ​​the metal sheet 500, thereby maintaining the stability of the magnetic connection between the two.

[0043] Please refer to the reference. Figure 6 and Figure 7 In one example, the second magnetic element 420 is embedded in the second end plate 200.

[0044] Specifically, under the condition that the magnetic force allows, the second magnetic attractor 420 can be pre-embedded in the middle of the second end plate 200 or in a part of the second end plate 200 away from the housing 300; the second magnetic attractor 420 can also be pre-embedded in the end of the second end plate 200 close to the housing 300, so as to ensure a better magnetic attraction effect with the metal sheet 500 on the housing 300.

[0045] By pre-embedding the second magnetic component 420 in the second end plate 200, the gap between the housing 300 and the second end plate 200 is smaller after they are magnetically connected, so that the housing 300 can fit better with the second end plate 200.

[0046] Please refer to the reference. Figures 8 to 21 In one example, one of the movable end 302 and the second end plate 200 is provided with a plug hole 310, at least a portion of which extends along a first direction; the other of the movable end 302 and the second end plate 200 is provided with a plug 600, which is inserted into the plug hole 310.

[0047] The insertion hole 310 is a guide structure that allows the insertion member 600 to move in a specific direction. Specifically, it can be a slotted or through-hole structure, with its extension direction aligned with the thermal expansion direction of the electrolytic cell. The insertion member 600 is a rigid component that forms a sliding fit with the insertion hole 310, specifically implemented as a column 610 or a protrusion. The engagement between the insertion hole 310 and the insertion member 600 creates sliding along the first direction while restricting freedom in other directions. When the electrolytic cell expands due to heat, the second end plate 200 displaces along the first direction, and the insertion member 600 slides within the insertion hole 310 along the first direction. The extended portion of the insertion hole 310 provides sufficient travel space to ensure that thermal expansion is not rigidly constrained. The contact between the insertion member 600 and the sidewall of the insertion hole 310 forms a lateral limit, thereby restricting the insertion member 600 from shifting in a direction perpendicular to the first direction.

[0048] By connecting the movable end 302 to the second end plate 200 through a plug-in connection, the defect of lateral displacement that is prone to occur in the direction that is at an angle to the first direction can be reduced, and the mutual limiting effect of the two improves the stability of the connection between them.

[0049] Please refer to the reference. Figures 8 to 19 In one example, the movable end 302 is provided with a plug hole 310, and the plug 600 includes a column 610 and an end 620. One end of the column 610 is connected to the second end plate 200, and the other end passes through the plug hole 310 and can move in a first direction within the plug hole 310. The end 620 is connected to the end of the column 610 away from the second end plate 200 and is located on the side of the housing 300 opposite to the second end plate 200. The second end plate 200 has a side surface 220 facing the housing 300, and on the side surface 220, the projected area of ​​the end 620 is larger than the projected area of ​​the column 610.

[0050] The column 610 refers to the rod-shaped structure that connects the second end plate 200 and the insertion hole 310. Specifically, it can be a cylindrical rod or a prism-shaped rod. Its outer diameter is adapted to the size of the insertion hole 310 to maintain the degree of freedom of sliding. Specifically, the outer diameter is clearance-fitted with the insertion hole 310.

[0051] End cap 620 refers to the enlarged structure located at the end of column 610. It can be implemented as a disc or rectangular block, and the area enclosed by its outer contour is larger than the cross-sectional area of ​​column 610 to form a limiting constraint. Specifically, column 610 and end cap 620 are integrally connected or detachably connected.

[0052] The insertion hole 310 refers to the guide channel that passes through the movable end 302 on both the side facing the second end plate 200 and the side away from the second end plate 200. Specifically, it can be implemented using an elliptical hole or a rectangular hole, with its length direction parallel to the first direction to allow the column 610 to move in the first direction. The projected area of ​​the end 620 refers to the area occupied by the outer contour of the end 620 on the plane perpendicular to the side surface 220 of the second end plate 200.

[0053] With this configuration, when the internal components of the electrolytic cell expand and contract due to temperature changes, the second end plate 200 is driven by stress to move along the first direction. The column 610 slides within the insertion hole 310, causing relative displacement between the shell 300 and the second end plate 200, thereby releasing internal stress. Because the projected area of ​​the end 620 is larger than that of the column 610, it cannot pass through the insertion hole 310 during the movement of the second end plate 200, forming a reliable physical limit. This structure allows the second end plate 200 to move in the first direction while maintaining a mechanical connection through the cooperation of the column 610 and the insertion hole 310, preventing the shell 300 from completely separating from the end plate and reducing the risk of accidental detachment of the connection structure. In addition, this configuration also ensures a good fit between the shell 300 and the second end plate 200 after connection, thereby improving the sealing effect of the electrolytic cell.

[0054] Furthermore, please refer to the following: Figure 14 and Figure 15 The insertion hole 310 includes a limiting hole 311 and a connecting hole 312. The limiting hole 311 extends along a first direction, and the column 610 passes through the limiting hole 311. In the direction perpendicular to the first direction, the size of the limiting hole 311 is adapted to the size of the column 610. The connecting hole 312 is connected to one end of the limiting hole 311, and the projected area of ​​the connecting hole 312 on the side 220 is not less than the projected area of ​​the end 620 on the side 220.

[0055] The limiting hole 311 refers to a channel extending along the first direction, the dimension of which perpendicular to the first direction matches the dimension of the column 610. Specifically, it can be implemented using a through hole with a rectangular or circular cross-section, used to constrain the offset of the column 610 perpendicular to the first direction. The connecting hole 312 refers to an enlarged area connected to one end of the limiting hole 311, specifically implemented using a square or circular enlarged hole structure, used to provide an installation path for the end head 620 and prevent the end head 620 from dislodging during movement. The shape of the connecting hole 312 can be the same as or different from the shape of the end head 620.

[0056] When inserting the connector 600 into the connector hole 310, please refer to reference 13. Figure 15First, align the connector 600 with the connection hole of the connector 310 so that the end 620 of the connector 600 can pass through the housing 300 through the connecting hole 312, so that the end 620 is located on the side of the housing 300 away from the second end plate 200. Then, move the entire connector 600 in the direction of the limiting hole 311 in the connector 310 so that the column 610 of the connector 600 passes through the limiting hole 311, thus achieving the effect that the end 620 cannot come out of the limiting hole 311.

[0057] The column 610 moves freely in the first direction within the limiting hole 311, allowing the second end plate 200 to shift due to thermal expansion and contraction. The size matching between the limiting hole 311 and the column 610 restricts lateral offset, preventing the connector 600 from tilting due to uneven force. The connecting hole 312 communicates with the limiting hole 311, allowing the end 620 to enter the movement path of the limiting hole 311 through the connecting hole 312 during installation, preventing assembly difficulties caused by an excessively large projected area of ​​the end 620.

[0058] Please refer to the reference. Figures 16 to 18 In one example, the insertion hole 310 penetrates the end face of the movable end 302 away from the fixed end 301.

[0059] By passing the insertion hole 310 through the end face of the movable end 302 away from the fixed end 301, on the one hand, the column 610 of the insertion member 600 can be inserted into the insertion hole 310 along the first direction from the end face of the movable end 302 away from the fixed end 301 through the insertion hole 310, making it more convenient and quick to install the insertion member 600 into the insertion hole 310; on the other hand, it can also increase the displacement of the second end plate 200, thereby further reducing the risk of the housing 300 being torn under the action of the second end plate 200.

[0060] Furthermore, please refer to the following: Figures 16 to 18 The active end 302 is provided with a connecting post 700 on the side opposite to the second end plate 200. The electrolytic cell also includes an elastic element 800, one end of which is connected to the connecting post 700 and the other end is connected to the end head 620.

[0061] The connecting post 700 can be cylindrical or prismatic, or it can have a structure similar to or the same as that of the plug-in member 600 with end 620 described above. The elastic element 800 can be an elastic rope, a spring, or other elastic component. When the elastic element 800 is connected to the connecting post 700, it can be connected by adhesive, binding, or other connection methods; similarly, when the elastic element 800 is connected to the end 620, it can also be connected by adhesive, binding, or other connection methods.

[0062] This configuration improves the stability of the connection between the active end 302 and the second end plate 200.

[0063] Please refer to the reference. Figures 19 to 21 The insertion hole 310 includes a T-shaped hole, and the insertion member 600 includes a T-shaped block; the T-shaped hole penetrates the side of the second end plate 200 facing the first end plate 100; and / or, the T-shaped hole penetrates the side of the second end plate 200 away from the first end plate 100.

[0064] During installation, the T-shaped block can be aligned with the T-shaped hole from the side of the second end plate 200 toward the first end plate 100 or from the side away from the first end plate 100, and then the T-shaped block can be inserted into the T-shaped hole along the first direction.

[0065] This configuration ensures that the connector 600 can be stopped by the wall of the insertion hole 310 in other directions that form an angle with the first direction, thereby achieving a better limiting and guiding effect. This not only facilitates assembly but also improves the stability of the connector 600 installed in the insertion hole 310 and reduces the risk of the housing 300 and the second end plate 200 separating from each other in directions other than the first direction.

[0066] This application also proposes a hydrogen production device, which includes an electrolyzer. The specific structure of the electrolyzer is as described in the above embodiments. Since this hydrogen production device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0067] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive 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, characterized in that, include: First end plate; The second end plate, the first end plate and the second end plate are disposed opposite each other in a first direction; as well as The housing has a fixed end and a movable end disposed opposite to each other along a first direction; a first end plate is fixedly connected to the fixed end, a second end plate is movably connected to the movable end, and the second end plate is movable in the first direction.

2. The electrolytic cell as described in claim 1, characterized in that, The movable end and the second end plate are magnetically connected.

3. The electrolytic cell as described in claim 2, characterized in that, The movable end is provided with a first magnetic suction component, and the second end plate is a metal component. The first magnetic suction component is magnetically connected to the second end plate.

4. The electrolytic cell as described in claim 3, characterized in that, The second end plate is provided with a limiting groove, and the first magnetic attractor is located in the limiting groove; The second end plate has a main body surface facing the first end plate. On a plane perpendicular to the main body surface, the size of the projection of the first magnetic member in the first direction is smaller than the size of the limiting groove in the first direction.

5. The electrolytic cell as described in claim 2, characterized in that, The movable end is provided with a metal sheet, and the second end plate is provided with a second magnetic attractor on the side facing the housing. The second magnetic attractor is magnetically connected to the metal sheet. The second end plate has a main board surface facing the first end plate, and on a plane perpendicular to the main board surface, the size of the projection of the metal sheet in a first direction is larger than the size of the second magnetic member in the first direction.

6. The electrolytic cell as described in claim 5, characterized in that, The second magnetic chuck is embedded in the second end plate.

7. The electrolytic cell according to any one of claims 1 to 6, characterized in that, One of the movable end and the second end plate is provided with a plug hole, at least a portion of which extends along the first direction; the other of the movable end and the second end plate is provided with a plug-in, which is inserted into the plug hole.

8. The electrolytic cell as described in claim 7, characterized in that, The movable end is provided with the insertion hole, and the insertion component includes: A column, one end of which is connected to the second end plate, and the other end of which passes through the insertion hole and can move within the insertion hole along the first direction; and An end is connected to one end of the column away from the second end plate and located on the side of the housing opposite to the second end plate; the second end plate has a side facing the housing, on which the projected area of ​​the end is larger than the projected area of ​​the column.

9. The electrolytic cell as described in claim 8, characterized in that, The insertion hole includes: A limiting hole extends along the first direction, and the column passes through the limiting hole; in the direction perpendicular to the first direction, the size of the limiting hole is adapted to the size of the column; and A connecting hole is provided, which is connected to one end of the limiting hole. The projected area of ​​the connecting hole on the side is not less than the projected area of ​​the end on the side.

10. The electrolytic cell as described in claim 8, characterized in that, The insertion hole penetrates the end face of the movable end away from the fixed end.

11. The electrolytic cell as described in claim 10, characterized in that, The movable end is also provided with a connecting post on the side opposite to the second end plate. The electrolytic cell also includes an elastic element, one end of which is connected to the connecting post and the other end of which is connected to the end.

12. The electrolytic cell as described in claim 7, characterized in that, The insertion hole includes a T-shaped hole, and the insertion component includes a T-shaped block; The T-shaped hole penetrates the second end plate on the side facing the first end plate; and / or, the T-shaped hole penetrates the second end plate on the side away from the first end plate.

13. A hydrogen production device, characterized in that, Includes the electrolytic cell as described in any one of claims 1 to 12.

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