AEM runner plate, sealing runner plate frame and AEM electrolytic bath

Abstract

The utility model relates to the technical field of water electrolysis hydrogen production equipment, in particular to an AEM runner plate, a sealing runner plate frame and an AEM electrolytic bath. The AEM runner plate comprises a flat plate main body, a plurality of grooves are formed in one surface of the flat plate main body, and the grooves extend from the head end of the flat plate main body to the tail end of the flat plate main body, so that the grooves form runners for fluid circulation; first limiting columns protruding in the direction away from the head end of the flat plate body are arranged on the two sides of the head end of the flat plate body correspondingly. Second limiting columns protruding in the direction away from the tail end of the flat plate body are arranged on the two sides of the tail end of the flat plate body correspondingly. According to the AEM runner plate, the limiting column structure is designed, the head end and the tail end of the AEM runner plate are provided with the fluid dispersion areas, and the fluid dispersion areas are matched with the grooves, so that fluid can be uniformly distributed in a runner of the whole runner plate, and therefore, when the AEM runner plate is applied to water electrolysis hydrogen production equipment, the gas-liquid two-phase flowing property can be improved, the fluid flowing resistance on a polar plate can be reduced, and the water electrolysis hydrogen production efficiency can be improved. Local hot spots are eliminated, and the electrolytic efficiency of the electrolytic bath is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water electrolysis hydrogen production equipment, and particularly relates to an AEM flow channel plate, a sealed flow channel plate frame and an AEM electrolytic cell. Background Technique

[0002] Existing AEM electrolytic cells usually consist of an anode plate, an anode current collector, a membrane electrode (also known as a diaphragm, etc.), a cathode current collector, and a cathode plate. When an AEM electrolytic cell is in use, the fluid needs to come into contact with the current collector when entering the electrolytic cell, thus causing a reaction. Therefore, if the distribution of the fluid is not good (for example, the dispersion is uneven), it will have an adverse effect on the electrolysis effect and efficiency of the electrolytic cell.

[0003] However, there is a common defect of poor fluid dispersion in existing AEM electrolytic cells. In order to improve the fluid dispersion, some devices on the market usually carry out flow channel design on the structures such as the anode plate of the electrolytic cell, but often due to the overly complex structure design, the processing cost is too high. Content of the Utility Model

[0004] To solve the deficiencies of the prior art mentioned in the above background technique, the utility model provides an AEM flow channel plate, and its technical solution is as follows:

[0005] The present application provides an AEM flow channel plate, which includes a flat plate main body; a plurality of grooves are provided on one side of the flat plate main body, and the grooves extend through from the head end of the flat plate main body to the tail end of the flat plate main body, so that the grooves form flow channels for fluid to flow through; on both sides of the head end of the flat plate main body, first limiting columns protruding away from the head end of the flat plate main body are respectively provided, and a first fluid dispersion area communicated with the head end slot of the groove is formed between the two first limiting columns; on both sides of the tail end of the flat plate main body, second limiting columns protruding away from the tail end of the flat plate main body are respectively provided, and a second fluid dispersion area communicated with the tail end slot of the groove is formed between the two second limiting columns.

[0006] In some embodiments, the grooves extend linearly from the head end of the flat plate main body and penetrate through to the tail end of the flat plate main body, and the plurality of grooves are parallel to each other.

[0007] In some embodiments, the flat plate main body is in a rectangular plate-like structure; on both sides of the head end of the flat plate main body, first limiting columns protruding and extending away from the head end of the flat plate main body are respectively provided, and on both sides of the tail end of the flat plate main body, second limiting columns protruding and extending away from the tail end of the flat plate main body are respectively provided; wherein, the extending direction of the grooves is parallel to the left and right sides of the flat plate main body, and the protruding and extending directions of the first limiting columns and the second limiting columns are parallel to the left and right sides of the flat plate main body.

[0008] In some embodiments, the first limiting post and the second limiting post are one of a cuboid structure and a hemispherical structure.

[0009] The present application also provides a sealed flow channel plate frame, which includes a sealing frame and the flow channel plate as described above; an installation opening for installing the flow channel plate is provided in the middle of the sealing frame; wherein, the outer edge of the flow channel plate is connected to the inner edge of the installation opening, and the ends of the first limiting post and the second limiting post are abutted against the inner edge of the installation opening, so that the flow channel plate fits and seals the installation opening, and only two of the first limiting posts and the inner edge of the installation opening enclose a first through opening, and the two second limiting posts and the inner edge of the installation opening enclose a second through opening.

[0010] The present application also provides an AEM electrolytic cell, which sequentially includes an anode plate, an anode sealed flow channel plate frame, an anode current collector, a membrane electrode, a cathode current collector, a cathode sealed flow channel plate frame, and a cathode plate; the anode sealed flow channel plate frame and / or the cathode sealed flow channel plate frame adopt the sealed flow channel plate frame as described above; wherein, a groove is provided on the surface of the flow channel plate in the anode sealed flow channel plate frame close to the anode current collector, and a groove is provided on the surface of the flow channel plate in the cathode sealed flow channel plate frame close to the cathode current collector.

[0011] In some embodiments, the extending direction of the groove of the flow channel plate in the anode sealed flow channel plate frame is perpendicular to the extending direction of the groove of the flow channel plate in the cathode sealed flow channel plate frame.

[0012] In some embodiments, the anode current collector matches the installation opening in the anode sealed flow channel plate frame, so that the anode current collector can cover and seal the flow channel plate, the first through opening and the second through opening in the anode sealed flow channel plate frame; the cathode current collector matches the installation opening in the cathode sealed flow channel plate frame, so that the cathode current collector can cover and seal the flow channel plate, the first through opening and the second through opening in the cathode sealed flow channel plate frame.

[0013] In some embodiments, upper through holes, lower through holes, left through holes and right through holes are respectively provided in the up, down, left and right directions on the outer periphery of the AEM electrolytic cell, which sequentially penetrate from the anode plate, the sealing frame of the anode sealed flow channel plate frame, the membrane electrode to the sealing frame of the cathode sealed flow channel plate frame; the upper through hole, the lower through hole, the left through hole and the right through hole are used for fluid to enter and exit.

[0014] In some embodiments, the upper through hole and the lower through hole are respectively communicated with the first through opening and the second through opening of the anode sealed flow channel plate frame, and the left through hole and the right through hole are respectively communicated with the first through opening and the second through opening of the cathode sealed flow channel plate frame.

[0015] In some embodiments, the left through-hole and the right through-hole are respectively communicated with the first port and the second port of the anode sealing flow channel plate frame, and the upper through-hole and the lower through-hole are respectively communicated with the first port and the second port of the cathode sealing flow channel plate frame.

[0016] In some embodiments, vertical grooves extending in the vertical direction and penetrating through to the installation ports thereon are provided on the upper through-hole and the lower through-hole on the side of the sealing frame of the anode sealing flow channel plate frame facing away from the membrane electrode; horizontal grooves extending in the horizontal direction and penetrating through to the installation ports thereon are provided on the left through-hole and the right through-hole on the side of the sealing frame of the cathode sealing flow channel plate frame facing away from the membrane electrode;

[0017] In some embodiments, vertical grooves extending in the vertical direction and penetrating through to the installation ports thereon are provided on the upper through-hole and the lower through-hole on the side of the sealing frame of the cathode sealing flow channel plate frame facing away from the membrane electrode; horizontal grooves extending in the horizontal direction and penetrating through to the installation ports thereon are provided on the left through-hole and the right through-hole on the side of the sealing frame of the anode sealing flow channel plate frame facing away from the membrane electrode.

[0018] Based on the above, compared with the prior art, the AEM flow channel plate provided by the present utility model has the following

[0019] Beneficial effects:

[0020] The AEM flow channel plate provided by the present utility model has a fluid dispersion area at its head and tail by designing a limit post structure. Through the cooperation of the fluid dispersion area and the groove, the fluid can be evenly distributed in the flow channels of the entire flow channel plate. When the AEM flow channel plate is applied to a water electrolysis hydrogen production device, it can improve the gas-liquid two-phase flow properties, reduce the fluid flow resistance on the electrode plate, eliminate local hot spots, and improve the electrolysis efficiency of the electrolytic cell. In addition, the structure of the flow channel plate is simple and the processing is convenient.

[0021] Other features and beneficial effects of the present utility model will be described in the subsequent specification, and some of them will become obvious from the specification or can be understood by implementing the present utility model. The objectives and other beneficial effects of the present utility model can be achieved and obtained through the structures specifically pointed out in the specification and the drawings. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts; in the following description of the positional relationship of the drawings, unless otherwise specified, the direction in which the components are shown in the drawings is used as the reference.

[0023] Figure 1 Structural schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 1 ;

[0024] Figure 2 Structural schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 2 ;

[0025] Figure 3 Partial structural split schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 1 ;

[0026] Figure 4 Partial structural split schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 2 ;

[0027] Figure 5 Partial structural split schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 3 ;

[0028] Figure 6 Partial structural split schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 4 ;

[0029] Figure 7 Partial structural split schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 5 ;

[0030] Figure 8 Partial structural split schematic of the AEM electrolytic cell provided by an embodiment of the present utility model Figure 6 ;

[0031] Figure 9 Structure of the anode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model Figure 1 ;

[0032] Figure 10 is Figure 9 Local enlarged view at positions A - D in

[0033] Figure 11 Structure of the anode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model Figure 2 ;

[0034] Figure 12 Structure of the anode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model Figure 3 ;

[0035] Figure 13Schematic diagram of the structural disassembly of the anode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model;

[0036] Figure 14 Schematic diagram of the structure of the anode flow channel plate in the AEM electrolytic cell provided by an embodiment of the present utility model;

[0037] Figure 15 For the structure of the cathode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model Figure 1 ;

[0038] Figure 16 is Figure 15 Partial enlarged view at positions A - D in;

[0039] Figure 17 For the structure of the cathode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model Figure 2 ;

[0040] Figure 18 For the structure of the cathode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model Figure 3 ;

[0041] Figure 19 Schematic diagram of the structural disassembly of the cathode sealing flow channel plate frame in the AEM electrolytic cell provided by an embodiment of the present utility model;

[0042] Figure 20 Schematic diagram of the structure of the cathode flow channel plate in the AEM electrolytic cell provided by an embodiment of the present utility model.

[0043] Reference numerals:

[0044] 10. AEM electrolytic cell; 100. Anode plate; 300. Anode current collector; 400. Membrane electrode; 500. Cathode current collector; 600. Cathode plate; 200. Sealed flow channel plate frame; 210. Sealing frame; 220. Flow channel plate; 230. First through port; 240. Second through port; 211. Mounting port; 221. Groove; 222. First limit post; 223. Second limit post; 224. First fluid dispersion zone; 225. Second fluid dispersion zone; 226. Flat plate body; 710. Upper through hole; 720. Lower through hole; 730. Left through hole; 740. Right through hole; 750. Horizontal groove; 760. Vertical groove; 200a. Anode sealed flow channel plate frame; 210a. Anode sealing frame; 220a. Anode flow channel plate; 230a. Anode first through port; 240a. Anode second through port; 211a. Anode mounting port; 221a. Anode groove; 222a. Anode first limit post; 223a. Anode second limit post; 224a. Anode first fluid dispersion zone; 225a. Anode second fluid dispersion zone; 226a. Anode flat plate body; 200b. Cathode sealed flow channel plate frame; 210b. Cathode sealing frame; 220b. Cathode flow channel plate; 230b. Cathode first through port; 240b. Cathode second through port; 211b. Cathode mounting port; 221b. Cathode groove; 222b. Cathode first limit post; 223b. Cathode second limit post; 224b. Cathode first fluid dispersion zone 224b; 225b. Cathode second fluid dispersion zone; 226b. Cathode flat plate body. Detailed implementation manners

[0045] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The technical features designed in different implementation manners of the present utility model described below can be combined with each other as long as they do not conflict with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0046] In the description of the present utility model, it should be noted that all terms (including technical terms and scientific terms) used in the present utility model have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present utility model belongs, and should not be construed as limiting the present utility model. It should be further understood that the terms used in the present utility model should be understood as having meanings consistent with their meanings in the context of this specification and the relevant technical fields, and should not be understood in an idealized or overly formal sense, unless clearly defined as such in the present utility model.

[0047] This application provides an AEM electrolyzer 10 as shown in Figures 1 - 20 the embodiment, and the solution is as follows:

[0048] The AEM electrolyzer 10 successively includes an anode plate 100, an anode sealing flow channel plate frame 200a, an anode current collector 300, a membrane electrode 400, a cathode current collector 500, a cathode sealing flow channel plate frame 200b, and a cathode plate 600;

[0049] Among them, the above-mentioned anode sealing flow channel plate frame 200a and cathode sealing flow channel plate frame 200b each include a sealing frame 210 and a flow channel plate 220; to improve the fluid dispersion uniformity in the AEM electrolyzer, the specific designs of the sealing flow channel plate frame 200 (anode sealing flow channel plate frame 200a and cathode sealing flow channel plate frame 200b), and the component flow channel plate 220 and sealing frame 210 of the sealing flow channel plate frame 200 are as follows:

[0050] Regarding the design of the flow channel plate 220 on the sealing flow channel plate frame 200:

[0051] As Figures 9 - 10 shown, the flow channel plate 220 includes a flat plate main body 226; several grooves 221 are provided on one side of the flat plate main body 226, and the grooves 221 extend through from the head end of the flat plate main body 226 to the tail end of the flat plate main body 226, so that the grooves 221 form a flow channel for fluid to flow through; first limiting columns 222 protruding away from the head end of the flat plate main body 226 are respectively provided on both sides of the head end of the flat plate main body 226, and a first fluid dispersion area 224 communicating with the head end notch of the groove 221 is formed between the two first limiting columns 222; second limiting columns 223 protruding away from the tail end of the flat plate main body 226 are respectively provided on both sides of the tail end of the flat plate main body 226, and a second fluid dispersion area 225 communicating with the tail end notch of the groove 221 is formed between the two second limiting columns 223.

[0052] With the above design of the flow channel plate 220, limiting columns are formed on both sides of the head end and the tail end of the flow channel plate 220. Specifically, during use, a first fluid dispersion area 224 is formed between the two first limiting columns 222, and the two first limiting columns 222 limit the water flow flowing in from this inlet, so that the water flow is dispersed in this first fluid dispersion area 224 and flows into the flow channel formed by the groove 221 for uniform dispersion; similarly, the second fluid dispersion area 225 formed between the two second limiting columns 223 has the same effect. During use, the fluid is dispersed in one fluid dispersion area and correspondingly flows into the flow channel inlet to be uniformly distributed to each area and part of the flow channel plate 220, and then the fluid flows out from the flow channel outlet and is dispersed into another fluid dispersion area at the other end.

[0053] As can be seen from the above: at the head and tail ends of the flow channel plate 220 (i.e., the inlets and outlets of the fluid flowing into the grooves 221), a limiting post structure is designed to optimize the flow of the fluid at the inlet, realizing the uniform dispersion of the fluid at the end of the flow channel plate 220, and further enabling the fluid to be uniformly distributed in the flow channels of the entire flow channel plate 220. Therefore, when it is applied to the AEM electrolyzer 10, it can effectively improve the gas-liquid two-phase flow properties in the electrolyzer, reduce the flow resistance of the fluid, thereby eliminating local hot spots and improving the electrolysis efficiency of the electrolyzer. In addition, the structure of the flow channel plate 220 is simple and the processing is convenient.

[0054] Optionally, the groove 221 extends linearly from the head end of the flat plate body 226 and penetrates through to the tail end of the flat plate body 226, and several of the grooves 221 are parallel to each other.

[0055] With the above design of the groove 221, the flow channels on the flow channel plate 220 are more evenly distributed and the fluid dispersion effect is better.

[0056] Optionally, the flat plate body 226 is a rectangular plate-like structure; on both sides of the head end of the flat plate body 226, first limiting posts 222 protruding and extending away from the head end of the flat plate body 226 are respectively provided, and on both sides of the tail end of the flat plate body 226, second limiting posts 223 protruding and extending away from the tail end of the flat plate body 226 are respectively provided; wherein, the extending direction of the groove 221 is parallel to the left and right side edges of the flat plate body 226, and the protruding and extending directions of the first limiting posts 222 and the second limiting posts 223 are parallel to the left and right side edges of the flat plate body 226.

[0057] It should be noted that: the first limiting posts 222 and the second limiting posts 223 can be selected from one of a cuboid structure and a hemispherical structure. According to the above design concept, other structural shapes can also be selected, including but not limited to the above solutions.

[0058] Optionally, as Figures 9 - 20 shown, the anode sealing flow channel plate frame 200a includes an anode sealing frame 210a and an anode flow channel plate 220a; the cathode sealing flow channel plate frame 200b includes a cathode sealing frame 210b and a cathode flow channel plate 220b. The anode flow channel plate 220a and the cathode flow channel plate 220b both adopt the above-mentioned flow channel plate 220 structure design:

[0059] At the first end of the anode flat plate body 226a of the anode flow channel plate 220a, two first anode limiting posts 222a are provided to form a first anode fluid dispersion area 224a, and at the second end, two second anode limiting posts 223a are provided to form a second anode fluid dispersion area 225a. At the first end of the cathode flat plate body 226b of the cathode flow channel plate 220b, two first cathode limiting posts 222b are provided to form a first cathode fluid dispersion area 224b, and at the second end, two second cathode limiting posts 223b are provided to form a second cathode fluid dispersion area 225b.

[0060] The two flow channel plates 220 adopt an optimized design of the limiting post structure, which can further improve the uniformity of fluid dispersion.

[0061] For the mating design of the component flow channel plate 220 and the sealing frame 210 of the sealed flow channel plate frame 200, it is as follows:

[0062] Optionally, a mounting opening 211 for mounting the flow channel plate 220 is provided in the middle of the sealing frame 210; the outer edge of the flow channel plate 220 is connected to the inner edge of the mounting opening 211, and the ends of the first limiting posts 222 and the ends of the second limiting posts 223 are abutted against the inner edge of the mounting opening 211, so that the flow channel plate 220 fits and seals the mounting opening 211, and only the two first limiting posts 222 and the inner edge of the mounting opening 211 enclose a first through opening 230, and the two second limiting posts 223 and the inner edge of the mounting opening 211 enclose a second through opening 240.

[0063] As Figures 8 - 10 shown, through the mating design of the mounting opening 211 on the sealing frame 210 and the flow channel plate 220, the flow channel plate 220 is connected to the mounting opening 211, and the whole fits and seals the mounting opening 211, leaving only the first through opening 230 formed by the two first limiting posts 222 and the inner edge of the mounting opening 211, and the second through opening 240 formed by the two second limiting posts 223 and the inner edge of the mounting opening 211 as the flow path channels.

[0064] During use, at the first through opening 230, through the limiting of the first limiting posts 222 and the flow design of the groove 221, a fluid flow port and a fluid dispersion area are formed. When the liquid flows through the first through opening 230, the water flow disperses in this fluid dispersion area and flows into the flow channel formed by the groove 221 for uniform dispersion; similarly, when the liquid flows through the second through opening 240, through the limiting of the second limiting posts 223 and the flow design of the groove 221, a fluid flow port and a fluid dispersion area are formed. During use, the fluid disperses in the fluid dispersion area formed at the first through opening 230 and correspondingly flows into the inlet of the flow channel formed by the groove 221 to be uniformly distributed to each area and part of the flow channel plate 220, and then the fluid flows out from the flow channel outlet and disperses into another fluid dispersion area formed at the second through opening 240 at the other end.

[0065] As can be seen from the above, in cooperation with the installation opening 211 of the sealing frame 210, the position of the flow channel plate 220 can be accurately defined to reserve a fluid dispersion area between the fluid inlet and outlet channels and the flow channels.

[0066] Optionally, as Figures 9 - 20 shown, in this embodiment, both the anode sealing flow channel plate frame 200a and the cathode sealing flow channel plate frame 200b adopt the above-mentioned design scheme of matching the installation opening 211 with the flow channel plate 220. Among them, to adapt to the selected square plate-shaped flat body 226 structure, the installation openings 211 of the anode sealing frame 210a and the cathode sealing frame 210b are both designed with a rectangular structure:

[0067] An anode installation opening 211a for installing the anode flow channel plate 220a is provided in the middle of the anode sealing frame 210a; wherein, the left and right sides of the anode flow channel plate 220a are connected to the left and right side edges of the anode installation opening 211a, and the anode first limiting posts 222a and the anode second limiting posts 223a are respectively abutted against the top and bottom of the anode installation opening 211a, so that at the top of the anode installation opening 211a, an anode first through opening 230a is formed between the two anode first limiting posts 222a and the inner edge of the top of the anode installation opening 211a; and at the bottom of the anode installation opening 211a, an anode second through opening 240a is formed between the two anode second limiting posts 223a and the inner edge of the bottom of the anode installation opening 211a.

[0068] A cathode installation opening 211b for installing the cathode flow channel plate 220b is provided in the middle of the cathode sealing frame 210b; wherein, the upper and lower sides of the cathode flow channel plate 220b are connected to the upper and lower side edges of the cathode installation opening 211b, and the cathode first limiting posts 222b and the cathode second limiting posts 223b are respectively abutted against the left and right sides of the first installation opening 211, so that on the left side of the cathode installation opening 211b, a cathode first through opening 230b is formed between the two cathode first limiting posts 222b and the inner edge of the left side of the cathode installation opening 211b, and on the right side of the cathode installation opening 211b, a cathode second through opening 240b is formed between the two cathode second limiting posts 223b and the inner edge of the right side of the cathode installation opening 211b.

[0069] Optionally, as Figures 3 - 8As shown, on the side of the anode flow channel plate 220a in the anode sealing flow channel plate frame 200a close to the anode current collector 300, there is an anode groove 221a, and on the side of the cathode flow channel plate 220b in the cathode sealing flow channel plate frame 200b close to the cathode current collector 500, there is a cathode groove 221b. Optionally, the anode current collector 300 matches the installation opening 211 in the anode sealing flow channel plate frame 200a, so that the anode current collector 300 can cover and seal the flow channel plate 220, the first through port 230, and the second through port 240 in the anode sealing flow channel plate frame 200a; the cathode current collector 500 matches the installation opening 211 in the cathode sealing flow channel plate frame 200b, so that the cathode current collector 500 can cover and seal the flow channel plate 220, the first through port 230, and the second through port 240 in the cathode sealing flow channel plate frame 200b.

[0070] With the above design, the grooves 221 of the anode flow channel plate 220a and the cathode flow channel plate 220b face inwards (in this article, with the membrane electrode 400 as the internal center, the direction gradually approaching the membrane electrode 400 is designated as from outside to inside). During use, water flows in from the outside of the anode plate 100, flows into the anode groove 221a inside from the anode first through port 230a on the outside of the anode sealing flow channel plate frame 200a, and enters the adjacent anode current collector 300 to generate gas through an electrochemical reaction.

[0071] It can be seen that through the design of the groove 221 facing inwards, the direction of the flow channel is opposite to the direction of the fluid entering the flow channel from the outside of the sealing frame 210, and there is a non - facing position difference, avoiding the direct flushing of the fluid outside into the flow channels in the middle area of the flow channel plate 220, and causing a large difference in the fluid distribution between the edge flow channels and the middle flow channels, so as to further improve the fluid dispersion uniformity.

[0072] Optionally, the extending direction of the anode groove 221a of the anode flow channel plate 220a in the anode sealing flow channel plate frame 200a is perpendicular to the extending direction of the cathode groove 221b of the flow channel plate 220 in the cathode sealing flow channel plate frame 200b.

[0073] In this embodiment, the anode groove 221a of the anode flow channel plate 220a extends in the vertical direction (that is, its head and tail refer to the upper and lower ends), and the cathode groove 221b of the cathode flow channel plate 220b extends in the horizontal direction (that is, its head and tail refer to the left and right ends).

[0074] According to the above design concept, the anode groove 221a and the cathode groove 221b can also adopt the schemes of horizontal and vertical extensions respectively, including but not limited to the embodiment scheme.

[0075] Optionally, the outer periphery of the AEM electrolytic cell 10 is provided with an upper through hole 710, a lower through hole 720, a left through hole 730 and a right through hole 740 which pass through the sealing frame 210 of the anode sealing flow channel plate frame 200a, the membrane electrode 400 to the cathode sealing flow channel plate frame 200b in sequence; the upper through hole 710, the lower through hole 720, the left through hole 730 and the right through hole 740 are used for fluid inlet and outlet; wherein the upper through hole 710 and the lower through hole 720 are respectively communicated with the first through hole 230 and the second through hole 240 of the anode sealing flow channel plate frame 200a, and the left through hole 730 and the right through hole 740 are respectively communicated with the first through hole 230 and the second through hole 240 of the cathode sealing flow channel plate frame 200b;

[0076] In accordance with the design that the anode groove 221a extends in the vertical direction, the upper through hole 710 and the lower through hole 720 of the embodiment are respectively connected to the anode first through hole 230a and the anode second through hole 240a of the anode sealing flow channel plate frame 200a. When in use, the liquid enters the outer side of the anode flow channel plate 220a from the upper through hole 710, flows into the anode groove 221a from the anode first through hole 230a, generates an electrochemical reaction in the anode current collector 300, and flows out from the anode second through hole 240a and the lower through hole 720 in sequence.

[0077] In conjunction with the design that the cathode groove 221b extends in the horizontal direction, the left through hole 730 and the right through hole 740 of this embodiment are respectively connected to the cathode first opening 230b and the cathode second opening 240b of the cathode sealing flow channel plate frame 200b; similarly, the left through hole 730 and the right through hole 740, the cathode first opening 230b and the cathode second opening 240b form a gas circulation channel.

[0078] It should be noted that:

[0079] In this embodiment, the liquid is at the anode and the gas is at the cathode; the upper through hole 710 and the lower through hole 720 are for the liquid phase, and the two can be used as the inlet and outlet respectively, and the specific settings of top in and bottom out or bottom in and top out can be selected; the left through hole 730 and the right through hole 740 are for the gas phase, and the two can be used as the inlet and outlet respectively, and the specific settings of left in and right out or right in and left out can be selected.

[0080] Optionally, the upper through hole 710 and the lower through hole 720 on the side of the anode sealing frame 210a of the anode sealing flow channel plate frame 200a facing away from the membrane electrode 400 are provided with a vertical groove 760 extending in the vertical direction through to the mounting port 211 thereon; the left through hole 730 and the right through hole 740 on the side of the cathode sealing frame 210b of the cathode sealing flow channel plate frame 200b facing away from the membrane electrode 400 are provided with a horizontal groove 750 extending in the horizontal direction through to the mounting port 211 thereon.

[0081] The adoption of the above horizontal groove 750 and vertical groove 760 design can achieve the connection between the through hole and the mounting port 211.

[0082] It should be noted that:

[0083] In addition to the embodiment solutions, according to the above design concept, the anode groove 221a and the cathode groove 221b can also adopt the horizontal and vertical extension solutions respectively, including but not limited to the embodiment solutions. Adaptively, the left through hole 730 and the right through hole 740 are respectively connected to the anode first through port 230a and the anode second through port 240a of the anode sealing flow channel plate frame 200a, and the upper through hole 710 and the lower through hole 720 are respectively connected to the cathode first through port 230b and the cathode second through port 240b of the cathode sealing flow channel plate frame 200b. Similarly, adaptively, the left through hole 730 and the right through hole 740 of the anode sealing frame 210a are provided with horizontal grooves 750, and the upper through hole 710 and the lower through hole 720 of the cathode sealing frame 210b are provided with vertical grooves 760.

[0084] AEM is the English abbreviation for anion exchange membrane, and the AEM electrolyzer 10 is also called anion exchange membrane electrolyzer.

[0085] In addition, those skilled in the art should understand that although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, and it is not necessary to solve all the technical problems listed in the prior art or the background art at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation to the claim.

[0086] Although terms such as anode plate, anode current collector, membrane electrode, cathode current collector, cathode plate, etc. are used more in this article, the possibility of using other terms is not excluded. The use of these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention; the terms "first", "second", etc. (if any) in the description, claims and above-mentioned drawings of the embodiments of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An AEM flow channel plate, characterized in that: Comprising a flat plate body (226); On one side of the flat plate body (226), there are a number of grooves (221). The grooves (221) extend through from the head end to the tail end of the flat plate body (226), so that the grooves (221) form flow channels for fluid to flow through; On both sides of the head end of the flat plate body (226), there are first limiting posts (222) protruding away from the head end of the flat plate body (226). A first fluid dispersion area (224) communicating with the head end notch of the groove (221) is formed between the two first limiting posts (222); On both sides of the tail end of the flat plate body (226), there are second limiting posts (223) protruding away from the tail end of the flat plate body (226). A second fluid dispersion area (225) communicating with the tail end notch of the groove (221) is formed between the two second limiting posts (223).

2. The AEM flow channel plate according to claim 1, wherein: The groove (221) extends linearly from the head end of the flat plate body (226) and penetrates to the tail end of the flat plate body (226), and a number of the grooves (221) are parallel to each other.

3. The AEM flow channel plate according to claim 2, wherein: The flat plate body (226) is a rectangular plate-like structure; On both sides of the head end of the flat plate body (226), there are first limiting posts (222) protruding and extending away from the head end of the flat plate body (226). On both sides of the tail end of the flat plate body (226), there are second limiting posts (223) protruding and extending away from the tail end of the flat plate body (226); Wherein, the extending direction of the groove (221) is parallel to the left and right sides of the flat plate body (226), and the protruding and extending directions of the first limiting posts (222) and the second limiting posts (223) are parallel to the left and right sides of the flat plate body (226).

4. The AEM flow channel plate according to claim 3, wherein: The first limiting post (222) and / or the second limiting post (223) is one of a cuboid structure and a hemispherical structure.

5. A sealed flow channel plate frame, characterized in that: Comprising a sealing frame (210) and a flow channel plate (220) according to any one of claims 1-4; In the middle of the sealing frame (210), there is an installation opening (211) for installing the flow channel plate (220); Wherein, the outer edge of the flow channel plate (220) is connected to the inner edge of the installation opening (211), and the ends of the first limiting posts (222) and the ends of the second limiting posts (223) are abutted against the inner edge of the installation opening (211), so that the flow channel plate (220) fits and seals the installation opening (211). Only the two first limiting posts (222) and the inner edge of the installation opening (211) enclose a first through opening (230), and the two second limiting posts (223) and the inner edge of the installation opening (211) enclose a second through opening (240).

6. An AEM electrolyzer, characterized in that: Sequentially comprising an anode plate (100), an anode sealing flow channel plate frame (200a), an anode current collector (300), a membrane electrode (400), a cathode current collector (500), a cathode sealing flow channel plate frame (200b), and a cathode plate (600); The anode sealing flow channel plate frame (200a) and / or the cathode sealing flow channel plate frame (200b) adopt the sealing flow channel plate frame as described in claim 5; Wherein, a groove (221) is provided on one side of the flow channel plate (220) in the anode sealing flow channel plate frame (200a) close to the anode current collector (300), and a groove (221) is provided on one side of the flow channel plate (220) in the cathode sealing flow channel plate frame (200b) close to the cathode current collector (500).

7. The AEM electrolytic cell according to claim 6, characterized in that: The extending direction of the groove (221) of the flow channel plate (220) in the anode sealing flow channel plate frame (200a) is perpendicular to the extending direction of the groove (221) of the flow channel plate (220) in the cathode sealing flow channel plate frame (200b).

8. The AEM electrolyzer according to claim 6, wherein: The anode current collector (300) is matched with the mounting opening (211) in the anode sealing flow channel plate frame (200a) so that the anode current collector (300) can cover and seal the flow channel plate (220), the first through port (230) and the second through port (240) in the anode sealing flow channel plate frame (200a); The cathode current collector (500) is matched with the mounting opening (211) in the cathode sealing flow channel plate frame (200b) so that the cathode current collector (500) can cover and seal the flow channel plate (220), the first through port (230) and the second through port (240) in the cathode sealing flow channel plate frame (200b).

9. The AEM electrolyzer according to claim 6, characterized in that: Upper through holes (710), lower through holes (720), left through holes (730) and right through holes (740) are respectively provided in the up, down, left and right directions on the outer periphery of the AEM electrolyzer, which penetrate from the anode plate (100), the sealing frame (210) of the anode sealing flow channel plate frame (200a), the membrane electrode (400) to the sealing frame (210) of the cathode sealing flow channel plate frame (200b); the upper through holes (710), the lower through holes (720), the left through holes (730) and the right through holes (740) are used for fluid inlet and outlet; Wherein, the upper through hole (710) and the lower through hole (720) are respectively communicated with the first through port (230) and the second through port (240) of the anode sealing flow channel plate frame (200a), and the left through hole (730) and the right through hole are respectively communicated with the first through port (230) and the second through port (240) of the cathode sealing flow channel plate frame (200b); or the left through hole (730) and the right through hole (740) are respectively communicated with the first through port (230) and the second through port (240) of the anode sealing flow channel plate frame (200a), and the upper through hole (710) and the lower through hole (720) are respectively communicated with the first through port (230) and the second through port (240) of the cathode sealing flow channel plate frame (200b).

10. The AEM electrolyzer according to claim 9, wherein: On the upper through hole (710) and the lower through hole (720) on the side of the sealing frame (210) of the anode sealing flow channel plate frame (200a) facing away from the membrane electrode (400), there are vertical grooves (760) extending vertically and penetrating through to the mounting opening (211) thereon; on the left through hole (730) and the right through hole (740) on the side of the sealing frame (210) of the cathode sealing flow channel plate frame (200b) facing away from the membrane electrode (400), there are horizontal grooves (750) extending horizontally and penetrating through to the mounting opening (211) thereon. Or, On the upper through hole (710) and the lower through hole (720) on the side of the sealing frame (210) of the cathode sealing flow channel plate frame (200b) facing away from the membrane electrode (400), there are vertical grooves (760) extending vertically and penetrating through to the mounting opening (211) thereon; on the left through hole (730) and the right through hole (740) on the side of the sealing frame (210) of the anode sealing flow channel plate frame (200a) facing away from the membrane electrode (400), there are horizontal grooves (750) extending horizontally and penetrating through to the mounting opening (211) thereon.

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