Electrolytic cell unit structure capable of realizing rapid assembly and expansion and electrolytic cell

Abstract

The present application proposes an electrolytic cell unit structure and an electrolytic cell that can be quickly assembled and expanded, including a first frame and a second frame connected to each other, the first frame and the second frame enclosing a storage space, and also including a conductive component arranged in the storage space, the back side surfaces of the first frame and the second frame are both provided with an external connection structure to expand the electrolytic cell unit, including the first frame and the second frame and the conductive component arranged between the first frame and the second frame, the cell body structure is simple, and processing and assembly are convenient, the back side surfaces of the first frame and the second frame are both provided with an external connection structure to realize the expansion of the electrolytic cell unit mechanism, so that the length of the electrolytic cell can be flexibly adjusted according to load requirements, and the connection is stable.

Description

Technical Field

[0001] The present application relates to the technical field of electrolytic cells, and in particular to an electrolytic cell unit structure and an electrolytic cell capable of realizing rapid assembly and expansion. Background Art

[0002] In the process of producing hydrogen by electrolysis, an electrolytic cell is used for electrolysis. The electrolytic cell is formed by arranging multiple electrolytic units having an anode and a cathode through an ion exchange membrane (proton exchange membrane or alkaline ion exchange membrane). The electrolytic unit has a cathode chamber with a cathode installed and an anode chamber with an anode installed. In the electrolytic unit, the electrolyte is pure water (proton exchange membrane electrolyzer) or a 20%-30% alkaline hydroxide aqueous solution (alkaline ion exchange membrane electrolyzer). By performing electrolysis, oxygen is generated in the anode chamber and hydrogen is generated in the cathode chamber. In the face of the needs of large-scale and flexible load adjustment, the length of the electrolytic cell needs to be increased. The current electrolytic cell is fixed with fastening bolts, which is limited by the strength of the fastening bolts, limiting the expansion of the electrolytic cell capacity. Summary of the invention

[0003] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, the purpose of the present application is to propose an electrolytic cell unit structure that can be quickly assembled and expanded, including a first frame, a second frame and a conductive component arranged between the first frame and the second frame. The cell body structure is simple and easy to process and assemble. The back sides of the first frame and the second frame are both provided with an external connection structure to realize the expansion of the electrolytic cell unit mechanism, so that the length of the electrolytic cell can be flexibly adjusted according to load requirements, and the connection is stable.

[0005] To achieve the above-mentioned purpose, the present application proposes an electrolytic cell unit structure that can be quickly assembled and expanded, including a first frame and a second frame connected to each other, the first frame and the second frame enclose a storage space, and also include a conductive component arranged in the storage space, and the back sides of the first frame and the second frame are provided with an external connection structure to expand the electrolytic cell unit.

[0006] Furthermore, the external connection structure includes an external connection assembly body and / or an external connection assembly hole.

[0007] Furthermore, a first groove is disposed on the inner side surface of the first frame, and a second groove is disposed on the inner side surface of the second frame, and the first groove and the second groove are enclosed to form the accommodating space.

[0008] Furthermore, an inline assembly hole is provided on the inner side surface of the first frame located on the outer peripheral side of the first groove, and an inline assembly body is provided on the inner side surface of the second frame located on the outer peripheral side of the second groove, and the inline assembly body is plug-fitted with the inline assembly hole.

[0009] Furthermore, an annular groove is provided on the inner side surface of the first frame located outside the inline assembly hole, and an annular protrusion is provided on the inner side surface of the second frame located outside the inline assembly body, and the annular protrusion is embedded in the annular groove.

[0010] Furthermore, the conductive component includes a cathode plate, an anode plate and a separator disposed between the cathode plate and the anode plate.

[0011] Furthermore, a gasket is provided between the cathode plate and the separator and / or between the anode plate and the separator.

[0012] Furthermore, it also includes a first reinforcement member arranged on the outer peripheral side of the first frame and a second reinforcement member arranged on the outer peripheral side of the second frame, the back side surface of the first reinforcement member is arranged flush with the back side surface of the first frame, and the back side surface of the second reinforcement member is arranged flush with the back side surface of the second frame.

[0013] An electrolytic cell comprises at least one group of the above-mentioned electrolytic cell unit structures capable of realizing rapid assembly and expansion, wherein the external connection structures of adjacent electrolytic cell unit structures are interconnected to realize the expansion of the electrolytic cell units.

[0014] Furthermore, it also includes a first outer frame and a second outer frame of the electrolytic cell unit structure respectively arranged at the front and rear ends of the electrolytic cell.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of an electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in one embodiment of the present application;

[0018] Figure 2 This is a schematic diagram of the structure of the first frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 1 ;

[0019] Figure 3This is a schematic diagram of the structure of the first frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the structure of the second frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 1 ;

[0021] Figure 5 This is a schematic diagram of the structure of the second frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 2 ;

[0022] Figure 6 This is a schematic diagram of the structure of the first frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 3 ;

[0023] Figure 7 This is a schematic diagram of the structure of the first frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 4 ;

[0024] Figure 8 This is a schematic diagram of the structure of the second frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 3 ;

[0025] Fig. 9 This is a schematic diagram of the structure of the second frame of the electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. Figure 4 ;

[0026] Fig.10 It is a schematic structural diagram of a first outer frame of an electrolytic cell unit structure capable of realizing rapid assembly and expansion, proposed in another embodiment of the present application;

[0027] Fig.11 It is a schematic structural diagram of a second outer frame of an electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in another embodiment of the present application. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be construed as limiting the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0029] Figure 1 It is a structural schematic diagram of an electrolytic cell unit structure that can be quickly assembled and expanded, as proposed in one embodiment of the present application.

[0030] See also Figure 1-Figure 11 , an electrolyzer unit structure that can be quickly assembled and expanded, including a first frame 1 and a second frame 2 connected to each other, the first frame 1 and the second frame 2 enclose a storage space, and also include a conductive component 3 arranged in the storage space, and the back side surfaces of the first frame 1 and the second frame 2 are provided with an external connection structure to expand the electrolyzer unit. In this embodiment, the material of the first frame 1 and the second frame 2 is an engineering plastic with a certain strength and resistance to electrolyte corrosion, including but not limited to polyamide, polycarbonate, polyoxymethylene, polyphenylene ether, polyphenyl ester, polyether ketone, and fluororesin. The electrolyzer units are expanded through the external connection structure, which is convenient to assemble. The number of unit structures can be adjusted as needed to achieve different electrolyzer lengths and conveniently achieve different hydrogen production amounts.

[0031] The external connection structure includes an external connection assembly 121 and / or an external connection assembly hole 221. Specifically, in the present embodiment, the back side of the first frame 1 is provided with an external connection assembly 121, and the back side of the second frame 2 is provided with an external connection assembly hole 221. The external connection assembly 121 of the first frame 1 is expanded by plugging and matching with the external connection assembly hole 221 of the second frame 2 of the adjacent electrolytic cell unit, and the external connection assembly hole 221 of the second frame 2 is expanded by plugging and matching with the external connection assembly 121 of the first frame 1 of the adjacent electrolytic cell unit, so as to adjust the length of the electrolytic cell. Of course, in other embodiments, the assembly and the assembly hole can also be mixed on the back side of the first frame and the second frame, and the frames of the adjacent electrolytic cell units are provided with assembly holes and assemblies adapted thereto at their corresponding positions, so as to realize the external connection expansion of the electrolytic cell unit. The present application does not limit the number and form of the external connection assembly and the external connection assembly hole.

[0032] The inner side surface of the first frame 1 is provided with a first groove 12, and the inner side surface of the second frame 2 is provided with a second groove 22, and the first groove 12 and the second groove 22 enclose the accommodation space. Specifically, in this embodiment, the first groove 12 and the second groove 22 are both circular grooves, and after the first frame 12 and the second frame 22 are butt-connected, the accommodation space is a closed space, and the conductive component is installed in the accommodation space. The size and shape of the conductive component are adapted to the accommodation space, so that the conductive component is stably installed in the electrolytic cell unit structure.

[0033] The inner side surface of the first frame 1 is located on the outer peripheral side of the first groove 12 and is provided with an inline assembly hole 111. The inner side surface of the second frame 2 is located on the outer peripheral side of the second groove 22 and is provided with an inline assembly body 211. The inline assembly body 111 and the inline assembly hole 211 are plugged in and matched. In this embodiment, a plurality of inline assembly holes 111 are circumferentially arranged on the outer peripheral side of the first groove 12, and a plurality of inline assembly bodies 211 are circumferentially arranged on the outer peripheral side of the second groove 22. The number and position of the inline assembly holes 111 and the inline assembly bodies 211 are arranged corresponding to each other. The inline assembly bodies and inline assembly holes between the first frame and the second frame are plugged in and matched to achieve simple assembly of the mating surfaces. The assembly is convenient and quick, and is easy to disassemble and overhaul. The assembly surfaces are tightly fitted and have good sealing to avoid leakage.

[0034] The inner side surface of the first frame 1 is located outside the inline assembly hole 111 and is provided with an annular groove (not shown in the figure), and the inner side surface of the second frame 2 is located outside the inline assembly body 211 and is provided with an annular protrusion (not shown in the figure), and the annular protrusion is embedded in the annular groove. The connection between the first frame 1 and the second frame 2 is sealed by the embedded cooperation of the annular protrusion and the annular groove to ensure the sealing of the electrolytic cell unit. It can be understood that the annular protrusion and the annular groove are adapted in size and are tightly matched to achieve good sealing. Preferably, a sealing gasket is provided between the annular protrusion and the annular groove to further improve the sealing effect of the first frame and the second frame.

[0035] The conductive assembly 3 includes a cathode plate 31, an anode plate 32, and a diaphragm 33 disposed between the cathode plate 31 and the anode plate 32. The cathode plate 31 and the anode plate 32 are respectively connected to a power source to energize the electrolyte, and the diaphragm 33 separates the cathode plate 31 and the anode plate 32. The diaphragm has a cathode surface and an anode surface. The size and shape of the cathode plate 31 match the cathode surface of the diaphragm 33. The size and shape of the anode plate 32 match the anode surface of the diaphragm 33. The cathode plate, the diaphragm, and the anode plate are in close contact and are placed in the accommodation space between the first frame 1 and the second frame 2, and are fastened by assembling the inline assembly hole 111 with the inline assembly body 121.

[0036] A gasket (not shown in the figure) is provided between the cathode plate 31 and the diaphragm 33 and / or between the anode plate 32 and the diaphragm 33. The spacing between the diaphragm 33 and the cathode plate 31 and between the diaphragm 33 and the anode plate 32 is adjusted by providing the gasket. The spacing between the anode plate 32 and the diaphragm 33 and the spacing between the cathode plate 31 and the diaphragm 33 can be adjusted separately or simultaneously. The operation is highly flexible, and a zero spacing structure can be realized to reduce inter-electrode resistance, and the needs of electrode performance research can be met by setting a certain gap.

[0037] An electrolytic cell unit structure capable of rapid assembly and expansion also includes a first reinforcement member 13 disposed on the outer peripheral side of the first frame 1 and a second reinforcement member 23 disposed on the outer peripheral side of the second frame 2, wherein the back side of the first reinforcement member 13 is flush with the back side of the first frame 1, and the back side of the second reinforcement member 23 is flush with the back side of the second frame 2. After the electrolytic cell is expanded and extended, adjacent electrolytic cell units are fitted together, wherein the first reinforcement member 13 and the second reinforcement member 23 are also fitted together, and adjacent reinforcement members on the outer side of the frame can be fastened in sections by means of external clamps, flanges, welding, fusion, etc., thereby avoiding the limitation of strength on the size of the electrolytic cell.

[0038] An electrolyzer comprises at least one group of the above-mentioned electrolyzer unit structures capable of realizing rapid assembly and expansion, wherein the external connection structures of adjacent electrolyzer unit structures are connected to each other to realize the expansion of the electrolyzer units. The electrolyzer units are conveniently assembled, and the number of electrolyzer units can be adjusted as needed to realize different electrolyzer lengths, thereby conveniently realizing different hydrogen production amounts.

[0039] An electrolytic cell also includes a first outer frame 4 and a second outer frame 5 of an electrolytic cell unit structure respectively arranged at the front and rear ends of the electrolytic cell. The first outer frame 4 and the second outer frame 5 have edges made of engineering plastics, connected to the frame of the end electrolytic unit, and their sizes are adapted. The middle of the first outer frame and the second outer frame is a conductive area, and the first outer frame and the second outer frame play the role of conducting electricity for an external power source and fastening and sealing the electrolytic cell. The plastic edges and conductive areas of the first outer frame 4 and the second outer frame 5 are connected by welding or integral injection molding. The electrolytic cell unit connected to the first outer frame has an internal structure of cathode-diaphragm-anode, and the cathode is close to the first outer frame; the electrolytic cell unit connected to the second outer frame has an internal structure of cathode-diaphragm-anode, and the anode is close to the second outer frame.

[0040] It should be noted that, in the description of this application, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0041] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An electrolytic cell unit structure capable of rapid assembly and expansion, characterized in that: It includes a first frame and a second frame connected to each other, wherein the first frame and the second frame enclose a receiving space, and further includes a conductive component arranged in the receiving space, wherein the back side surfaces of the first frame and the second frame are both provided with an external connection structure to expand the electrolytic cell unit; The external connection structure includes an external connection assembly and / or an external connection assembly hole; The inner side surface of the first frame is provided with a first groove, the inner side surface of the second frame is provided with a second groove, the first groove and the second groove are enclosed to form the accommodation space, and the accommodation space is a closed space; An inline assembly hole is provided on the inner side surface of the first frame and located on the outer circumference of the first groove; an inline assembly body is provided on the inner side surface of the second frame and located on the outer circumference of the second groove; the inline assembly body and the inline assembly hole are plug-fitted; the inline assembly body and the inline assembly hole are in corresponding positions and have the same number; The inner side surface of the first frame is located outside the inline assembly hole and is provided with an annular groove, and the inner side surface of the second frame is located outside the inline assembly body and is provided with an annular protrusion, which is embedded in the annular groove; a sealing gasket is provided between the annular protrusion and the annular groove.

2. The electrolytic cell unit structure capable of rapid assembly and expansion according to claim 1, characterized in that: The conductive assembly includes a cathode plate, an anode plate, and a separator disposed between the cathode plate and the anode plate.

3. The electrolytic cell unit structure capable of rapid assembly and expansion according to claim 2, characterized in that: A gasket is provided between the cathode plate and the separator and / or between the anode plate and the separator.

4. The electrolytic cell unit structure capable of rapid assembly and expansion according to claim 1, characterized in that: It also includes a first reinforcement member arranged on the outer peripheral side of the first frame and a second reinforcement member arranged on the outer peripheral side of the second frame. The back side surface of the first reinforcement member is flush with the back side surface of the first frame, and the back side surface of the second reinforcement member is flush with the back side surface of the second frame.

5. An electrolytic cell, characterized in that: It comprises at least one group of electrolytic cell unit structures capable of rapid assembly and expansion as described in any one of claims 1 to 4, wherein the external connection structures of adjacent electrolytic cell unit structures are interconnected to realize the expansion of the electrolytic cell units.

6. The electrolytic cell according to claim 5, characterized in that It also includes a first outer frame and a second outer frame of the electrolytic cell unit structure, which are respectively arranged at the front and rear ends of the electrolytic cell.

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