Electrolytic cell unit, mounting assembly, alkaline electrolytic cell, and hydrogen production system

Abstract

The utility model relates to an electrolytic cell unit, a mounting assembly, an alkaline electrolytic cell and a hydrogen production system. The electrolytic cell unit comprises an upper electrode frame and a lower electrode frame arranged below the upper electrode frame, the upper electrode frame and the lower electrode frame are respectively provided with a hollow part for accommodating an electrode, and one of the upper electrode frame and the lower electrode frame is provided with a protruding part extending outwards; one of the upper pole frame and the lower pole frame is provided with a protruding part, the other one of the upper pole frame and the lower pole frame is provided with a concave part matched with the protruding part, a deformation layer is arranged on the outer side of the protruding part, and the deformation layer can deform when the protruding part is inserted into the concave part. The electrolytic cell unit has the advantages of being simple in structure, low in manufacturing cost, convenient to disassemble, assemble and maintain, high in safety and the like.

Description

Technical Field

[0001] This application belongs to the field of new energy technology, specifically, it relates to an electrolyzer unit, an alkaline electrolyzer in which the electrolyzer unit is provided, a hydrogen production system configured with the alkaline electrolyzer, and an installation component for the electrolyzer unit. Background Technology

[0002] The information provided in this section is for the purpose of generally presenting the background of this disclosure. To the extent described in this section, the work of the currently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly considered to be prior art of this disclosure.

[0003] An alkaline electrolyzer is a device that converts electrical energy into chemical energy through electrochemical reactions. Its main principle is that ions in the electrolyte solution undergo redox reactions under the influence of an electric field, causing chemical changes at the anode and cathode. Typically, an alkaline electrolyzer consists of dozens of electrolyzer units stacked from bottom to top. Therefore, ensuring the stability and safety of this stacked electrolyzer unit arrangement presents significant challenges. Utility Model Content

[0004] According to this application, an electrolytic cell unit is provided, the electrolytic cell unit including an upper electrode frame and a lower electrode frame disposed below the upper electrode frame, the upper electrode frame and the lower electrode frame each having a hollow portion for accommodating an electrode, one of the upper electrode frame and the lower electrode frame being provided with an outwardly extending protrusion, the other of the upper electrode frame and the lower electrode frame being provided with a recess for matching the protrusion, wherein a deformation layer is provided on the outer side of the protrusion, the deformation layer being configured to deform when the protrusion is inserted into the recess.

[0005] Optionally, in the electrolytic cell unit as described above, the protrusions are arranged continuously around the hollow portion.

[0006] Optionally, in the electrolytic cell unit as described above, the protrusion is integrally formed with one of the upper and lower electrode frames; and / or

[0007] The protrusion has a circular, elliptical, triangular, trapezoidal, or square cross-sectional shape.

[0008] Optionally, in the electrolytic cell unit as described above, the upper electrode frame, the lower electrode frame, and the protrusion are all made of resin material; and / or

[0009] The deformation layer is made of fluororubber, EPDM rubber, silicone rubber or polytetrafluoroethylene.

[0010] Optionally, in the electrolytic cell unit as described above, the height of the recess is between 1 / 2 and 2 / 3 of the height of the other of the upper and lower electrode frames.

[0011] Optionally, in the electrolytic cell unit as described above, the thickness of the deformed layer is in the range of 0.1 mm to 1 mm; and / or

[0012] The deformation layer is fixed to the outside of the protrusion by a secondary injection molding process.

[0013] In addition, according to this application, an installation assembly for the above-mentioned electrolytic cell unit is also provided. The installation assembly includes a first screw and a second screw arranged side by side, and at least two end plates arranged perpendicular to the length direction of the first screw and the second screw. The at least two end plates are configured to slide along the length direction of the first screw and the second screw, and the electrolytic cell unit can be placed vertically between the at least two end plates.

[0014] Optionally, in the mounting assembly as described above, the mounting assembly is provided with a hydraulic device for driving one of the at least two end plates to move.

[0015] Furthermore, according to this application, an alkaline electrolytic cell is also provided, wherein the alkaline electrolytic cell is provided with the above-mentioned electrolytic cell unit.

[0016] In addition, according to this application, a hydrogen production system is also provided, which is equipped with the above-mentioned alkaline electrolyzer.

[0017] It is understood that the electrolytic cell unit of this application has many advantages such as simple structure, low manufacturing cost, and easy disassembly, assembly and stacking. Attached Figure Description

[0018] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0019] Figure 1 An illustrative exploded view of the electrolytic cell unit disclosed in this application is shown.

[0020] Figure 2 An exemplary schematic diagram of the structure of the electrolytic cell unit disclosed in this application after assembly is shown;

[0021] Figure 3 An exemplary top view of an electrolytic cell unit disclosed in this application is shown; and

[0022] Figure 4An exemplary schematic diagram of the mounting assembly for an electrolytic cell unit disclosed in this application is shown. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. First, it should be noted that the directional terms such as up, down, left, right, front, back, inner, outer, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive terms. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In this application, unless otherwise expressly specified and limited, the term "fixed" and similar terms should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," "some examples," or "possible implementation," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] Those skilled in the art know that alkaline electrolyzers are a major type of hydrogen production equipment, widely used in water electrolysis hydrogen production technology. Alkaline electrolyzers are generally formed by stacking multiple electrolyzer units. Figure 1 The structure of an electrolytic cell unit disclosed in this application is shown. From Figure 1 and Figure 2As clearly seen, the electrolytic cell unit 100 consists of an upper electrode frame 110 and a lower electrode frame 120, an electrode 130, a diaphragm 140, a porous transport layer 150, and a sealing gasket 160 arranged below the upper electrode frame 110. Both the upper electrode frame 110 and the lower electrode frame 120 are generally square frame structures and each has a hollow portion 170 for accommodating the electrode 130, the diaphragm 140, and the electrolyte. The outer side of the hollow portion 170 is sealed by a nickel plate (not shown). The electrode 130 includes a first electrode 131 and a second electrode 132, one of which is an anode electrode, and the other is a cathode electrode. Specifically, the first electrode 131 and the second electrode 132 are separated by the diaphragm 140 to form an anode chamber and a cathode chamber. When direct current passes through the electrolytic cell unit 100, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to produce the desired product.

[0027] like Figure 1 As shown, one of the upper electrode frame 110 and the lower electrode frame 120 is provided with an outwardly extending protrusion 180, and the other of the upper electrode frame 110 and the lower electrode frame 120 is provided with a recess 190 for matching the protrusion 180. Furthermore, a deformation layer is provided on the outer side of the protrusion 180. This deformation layer is configured to deform when the protrusion 180 is inserted into the recess 190. In other words, when the protrusion 180 and the recess 190 come into contact, the deformation layer deforms, allowing the protrusion 180 and the recess 190 to fit together more tightly. It should be noted that the self-locking structure formed by the protrusion 180 and the recess 190 allows the electrolytic cell unit 100 to be formed as an independent unit, which can be placed independently not only horizontally but also vertically, greatly facilitating the subsequent installation and disassembly of the electrolytic cell unit.

[0028] To prevent electrolyte leakage from the hollow portion 170 through the gap between the upper electrode frame 110 and the lower electrode frame 120, the protrusion 180 is provided continuously around the hollow portion 170, such as... Figure 3 As shown by the dashed line A in the diagram.

[0029] For ease of manufacturing, the protrusion 180 is integrally formed with one of the upper pole frame 110 and the lower pole frame 120. Furthermore, it will be readily understood by those skilled in the art that the protrusion 180 can be designed to have a circular, elliptical, triangular, trapezoidal, or square cross-sectional shape.

[0030] In the above embodiments, the upper electrode frame 110, the lower electrode frame 120, and the protrusion 180 are all made of resin material. Furthermore, the deformation layer needs to be made of a material with lower hardness and greater elasticity than the resin material; for example, the deformation layer can be made of fluororubber, EPDM rubber, silicone rubber, or polytetrafluoroethylene. For another example, the thickness of the deformation layer is between 0.1 mm and 1 mm. Yet another example is that the deformation layer can be fixed to the outside of the protrusion 180 by secondary injection molding.

[0031] Furthermore, this application also provides a mounting assembly 200 for the aforementioned electrolytic cell unit 100. The mounting assembly 200 includes a first screw 210 and a second screw 220 arranged side-by-side, and at least two end plates 230 arranged perpendicular to the length direction of the first screw 210 and the second screw 220. The at least two end plates 230 are configured to slide along the length direction of the first screw 210 and the second screw 220. The electrolytic cell unit 100 can be placed vertically between the at least two end plates 230. Figure 4 As shown. Furthermore, the mounting assembly 200 is provided with a hydraulic device 240 for driving one of the at least two end plates 230 to move.

[0032] Furthermore, this application also provides an alkaline electrolytic cell, which is provided with the aforementioned electrolytic cell unit 100. The alkaline electrolytic cell typically uses an alkaline electrolyte, such as potassium hydroxide or sodium hydroxide solution, as the electrolyte.

[0033] In addition, this application also provides a hydrogen production system, which is equipped with the alkaline electrolyzer described above.

[0034] The foregoing has listed several specific embodiments to illustrate in detail the electrolytic cell unit of this application, the alkaline electrolytic cell provided with the electrolytic cell unit, the hydrogen production system configured with the alkaline electrolytic cell, and the mounting components for the electrolytic cell unit. These examples are only for illustrating the principles and implementation methods of this application and are not intended to limit this application. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and scope of this application. For example, the height of the recess 190 is between 1 / 2 and 2 / 3 of the height of the other of the upper pole frame 110 and the lower pole frame 120. Therefore, all equivalent technical solutions should fall within the scope of this application and are defined by the claims of this application.

Claims

1. An electrolytic cell unit (100) comprising an upper electrode frame (110) and a lower electrode frame (120) disposed below the upper electrode frame (110), the upper electrode frame (110) and the lower electrode frame (120) each having a hollow portion (170) for accommodating an electrode (130), characterized in that, One of the upper pole frame (110) and the lower pole frame (120) is provided with an outwardly extending protrusion (180), and the other of the upper pole frame (110) and the lower pole frame (120) is provided with a recess (190) for matching the protrusion (180). A deformation layer is provided on the outer side of the protrusion (180), and the deformation layer is configured to deform when the protrusion (180) is inserted into the recess (190).

2. The electrolytic cell unit according to claim 1, characterized in that, The protrusions (180) are arranged continuously around the hollow portion (170).

3. The electrolytic cell unit according to claim 2, characterized in that, The protrusion (180) is integrally formed with one of the upper pole frame (110) and the lower pole frame (120); and / or The protrusion (180) has a circular, elliptical, triangular, trapezoidal or square cross-sectional shape.

4. The electrolytic cell unit according to any one of claims 1-3, characterized in that, The upper pole frame (110), the lower pole frame (120), and the protrusion (180) are all made of resin material; and / or The deformation layer is made of fluororubber, EPDM rubber, silicone rubber or polytetrafluoroethylene.

5. The electrolytic cell unit according to any one of claims 1-3, characterized in that, The height of the recess (190) is between 1 / 2 and 2 / 3 of the height of the other of the upper pole frame (110) and the lower pole frame (120).

6. The electrolytic cell unit according to any one of claims 1-3, characterized in that, The thickness of the deformable layer is in the range of 0.1 mm to 1 mm; and / or The deformation layer is fixed to the outside of the protrusion (180) by a secondary injection molding process.

7. A mounting assembly for an electrolytic cell unit according to any one of claims 1 to 6, characterized in that, The mounting assembly (200) includes a first screw (210) and a second screw (220) arranged side by side, and at least two end plates (230) arranged perpendicular to the length direction of the first screw (210) and the second screw (220). The at least two end plates (230) are configured to slide along the length direction of the first screw (210) and the second screw (220), and the electrolytic cell unit (100) can be placed vertically between the at least two end plates (230).

8. The mounting assembly according to claim 7, characterized in that, The mounting assembly (200) is provided with a hydraulic device (240) for moving one of the at least two end plates (230).

9. An alkaline electrolytic cell, characterized in that, The alkaline electrolyzer is provided with an electrolyzer unit (100) according to any one of claims 1 to 6.

10. A hydrogen production system, characterized in that, The hydrogen production system is equipped with an alkaline electrolyzer according to claim 9.

Images