Polar plate and electrolytic cell
By introducing a high-compressive-strength outer frame and a split-molding design into the electrode plates, the problem of easy breakage of the electrode plates and frames is solved, thereby improving the structural stability and assembly efficiency of the electrolytic cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUNGROW HYDROGEN SCI &TECH CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-15
AI Technical Summary
The electrode frame of the electrode plate is prone to cracking under pressure, which affects the structural stability of the electrolytic cell.
An outer frame is introduced into the electrode plate. The compressive strength of the outer frame is higher than that of the electrode frame, forming a flow channel. The weight of the electrode plate is reduced and the structural stability is improved by using different materials and a split molding design.
This improves the structural stability of the electrode plates, ensures the stable operation of the electrolytic cell, and reduces the weight of the electrode plates and the difficulty of production and assembly.
Smart Images
Figure CN224243231U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrolysis technology, and in particular to an electrode plate and an electrolytic cell. Background Technology
[0002] In related technologies, multiple electrode plates between two end plates are clamped together by connecting the end plates with tie rods in an electrolytic cell. However, the electrode frames of the electrode plates are prone to cracking due to pressure, which in turn affects the operation of the electrolytic cell. Utility Model Content
[0003] The main objective of this application is to propose an electrode plate and an electrolytic cell, which aims to improve the structural stability of the electrode plate and ensure the structural stability of the electrolytic cell.
[0004] To achieve the above objectives, the electrode plate proposed in this application includes a plate body, an electrode frame, and an outer frame. The electrode frame is disposed on the outer periphery of the plate body, and the outer frame is disposed around the outer periphery of the electrode frame and fixed to at least one of the plate body and the electrode frame. The compressive strength of the outer frame is higher than that of the electrode frame.
[0005] In one embodiment, the outer peripheral side of the plate body and the pole frame are stacked together, and the inner peripheral side of the outer frame is connected to the outer peripheral side of the plate body.
[0006] In one embodiment, the pole frame includes two separate portions distributed along a first direction, and the outer peripheral side of the plate is sandwiched between the two separate portions;
[0007] The split section is provided with a sub-channel that runs through the first direction. The sub-channels of two split sections are opposite to each other and connected to form a first flow channel. At least one split section also forms a second flow channel. One end of the second flow channel is connected to the sub-channel of the corresponding split section, and the other end runs through the inner periphery of the split section.
[0008] In one embodiment, the plate has a clearance opening, and at least one of the split portions extends into the clearance opening, so that the two sub-channels are connected.
[0009] In one embodiment, the electrode plate is further provided with two first sealing rings, the electrode frame forms two first flow channels, the first sealing rings are sandwiched between the two split parts, and one of the first sealing rings is correspondingly arranged around the outer periphery of one of the first flow channels.
[0010] In one embodiment, the electrode frame has two first flow channels, which are an electrolyte inlet channel and an electrolysis product outlet channel, respectively. A second sealing ring is provided between the plate and each of the sub-parts, and each of the second sealing rings is arranged around the electrolyte inlet channel and the electrolysis product outlet channel.
[0011] In one embodiment, the two separate parts are provided with corresponding positioning ring protrusions on opposite sides. The inner circumferential side of the positioning ring protrusion is used to accommodate the diaphragm, and the outer circumferential side of the positioning ring protrusion is used to accommodate the sealing gasket.
[0012] In one embodiment, the opposite sides of the two separate parts are also provided with corresponding positioning grooves, which are used to accommodate electrodes.
[0013] In one embodiment, the inner periphery of the outer frame is connected to the plate by welding.
[0014] In one embodiment, the density of the polar frame is less than the density of the outer frame.
[0015] In one embodiment, the material of the polar frame is different from the material of the outer frame.
[0016] In one embodiment, the outer frame is configured to be made of metal.
[0017] In one embodiment, the pole frame is configured as a polymer material.
[0018] In one embodiment, the circumference of the outer frame is 25 mm to 30 mm.
[0019] In one embodiment, the ring width of the pole frame is 30 mm to 40 mm.
[0020] In one embodiment, at least two of the plate, the outer frame, and the polar frame are formed separately.
[0021] This application also proposes an electrolytic cell comprising two end plates and a plurality of the aforementioned electrode plates, wherein the plurality of electrode plates are disposed between two of the end plates and the two end plates are connected by a tie rod.
[0022] In the technical solution of this application, an outer frame is provided around the outer periphery of the electrode frame. In this way, when the outer frames of two adjacent electrode plates in the electrolytic cell abut against each other, the outer frame has high compressive strength and is not prone to structural damage, which can ensure the structural stability of the electrolytic cell. Although the electrode frames of two adjacent electrode plates will also abut against each other, the electrode frame will not be at risk of structural damage before the pressure-bearing function of the outer frame fails. This can improve the electrode plate's ability to resist pressure, thereby improving the structural stability of the electrode plate and ensuring the stable operation of the electrolytic cell. Attached Figure Description
[0023] 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.
[0024] Figure 1 A schematic diagram of the structure of an embodiment of the electrode plate provided in this application;
[0025] Figure 2 A partial structural cross-sectional view of an embodiment of the electrode plate provided in this application;
[0026] Figure 3 A schematic diagram of the assembly structure of an embodiment of the electrode plate and related structures provided in this application;
[0027] Figure 4 for Figure 3 A magnified view of the upper middle section;
[0028] Figure 5 This is a partial structural schematic diagram of an embodiment of the electrolytic cell provided in this application;
[0029] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;
[0030] Figure 7 A partial structural assembly diagram of an embodiment of the electrolytic cell provided in this application;
[0031] Figure 8 This is a partial structural fit diagram of another embodiment of the electrolytic cell provided in this application;
[0032] Figure 9 This is a partial structural assembly diagram of another embodiment of the electrolytic cell provided in this application.
[0033] Explanation of icon numbers:
[0034] 10. Electrode plate; 20. Diaphragm; 30. Sealing gasket; 40. Electrode; 50. End plate; 60. Pull rod;
[0035] 100. Plate body; 110. Clearance opening;
[0036] 210. Outer frame;
[0037] 220, Pole frame; 2201, First flow guide channel; 2202, Second flow guide channel; 221, Split section; 2211, Sub-channel; 2212, Positioning ring protrusion; 2213, Positioning groove;
[0038] 310. First sealing ring; 320. Second sealing ring.
[0039] 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
[0040] 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.
[0041] 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 the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0042] 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, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the 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. When 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.
[0043] This application proposes an electrolytic cell.
[0044] Please see Figures 4 to 5 In one embodiment of this application, the electrolytic cell includes two end plates 50 and a plurality of electrode plates 10 disposed between the two end plates 50. Two adjacent electrode plates 10, together with the electrode 40 and the diaphragm 20, form an electrolytic unit. The two end plates 50 are held together by a tie rod 60. The electrolytic cell can be circular in shape, i.e., as shown in the example. Figure 7 As shown, the end plate 50 and the electrode plate 10 are correspondingly circular. Of course, the electrolytic cell can also have a polygonal structure, for example... Figure 8 and Figure 9As shown, the structure can be a square or rectangular quadrilateral, or it can also be a polygonal structure such as a regular pentagon or regular hexagon. It should be noted that other circumferentially closed structures will also be set to corresponding shapes, such as the diaphragm 20, electrode 40, sealing gasket 30, etc., as well as the electrode frame 220, outer frame 210 and plate body 100 of the electrode plate 10, and the first sealing ring 310, second sealing ring 320, positioning ring protrusion 2212, positioning groove 2213 etc. provided on the electrode plate 10. In this way, the structure of the electrolytic cell can be evenly distributed in the circumference, thereby ensuring the working performance of the electrolytic cell.
[0045] Please see Figure 1 and Figure 2 The electrode plate 10 includes a plate body 100, an electrode frame 220, and an outer frame 210. The electrode frame 220 is disposed on the outer periphery of the plate body 100, and the outer frame 210 is arranged around the outer periphery of the electrode frame 220 and fixed to at least one of the plate body 100 and the electrode frame 220. The compressive strength of the outer frame 210 is higher than that of the electrode frame 220. The outer frame 210 and the plate body 100 or the electrode frame 220 are fixed together, either by bonding, welding, or fusion after being separately formed, or by injection molding of inserts.
[0046] In the technical solution of this application, the outer frame 210 and the electrode frame 220 of the two adjacent electrode plates of the electrolytic cell abut against each other. Since the outer frame 210 has high compressive strength, it is not easy to suffer structural damage, which can ensure the structural stability of the electrolytic cell. The electrode frame 220 is constructed with a flow channel. Although the electrode frames 220 of the two adjacent electrode plates will also abut against each other, the electrode frame 220 will not be at risk of structural damage before the pressure bearing function of the outer frame 210 fails. This can improve the ability of the electrode plate 10 to resist pressure, thereby improving the structural stability of the electrode plate 10 and ensuring the stable operation of the electrolytic cell.
[0047] Furthermore, in this embodiment, the density of the polar frame 220 is less than the density of the outer frame 210.
[0048] In the prior art, the electrode frame is used for both current conduction and pressure bearing. The ring width of the electrode frame in the prior art is equivalent to the sum of the ring widths of the electrode frame 220 and the outer frame 210 in the present application. That is, the ring width of the outer frame 210 designed in the present application is smaller than the ring width of the electrode frame in the prior art. In addition, the density of the electrode frame 220 in the present application is less than the density of the outer frame 210, so the total weight of the outer frame 210 and the electrode frame 220 in the present application will be less than the weight of the electrode frame in the prior art. Therefore, the present application can reduce the weight of the electrode plate 10 to facilitate the production and assembly of the electrolytic cell.
[0049] In one embodiment of this application, the materials of the electrode frame 220 and the outer frame 210 are different. The outer frame 210 can be configured with a material that has high compressive strength, while the electrode frame 220 can be configured with a material with lower density. Since the electrode frame 220 needs to construct flow channels, to ensure insulation at the flow channels, the electrode frame 220 can also be made of insulating material or an insulating layer can be added to the outer surface of a non-insulating material. In this way, the electrode frame 220 and the outer frame 210 can better perform their respective functions to ensure the operation of the electrolytic cell.
[0050] The outer frame 210 can be made of metal or non-metal. Metal materials include pure nickel, nickel alloys, pure titanium, and titanium alloys. Non-metal materials include modified polytetrafluoroethylene, polysulfone, and polyphenylene sulfide. Alternatively, the outer frame 210 can be made of composite materials, which can be metal composites or non-metallic materials. Metal composites can be titanium-based or nickel-based composites, while non-metallic composites can be certain ceramic-based composites, such as alumina-based composites, carbon / carbon composites, or fluorine-containing composites. All these materials possess good pressure resistance, meeting the operating pressure requirements of the electrolytic cell.
[0051] The electrode frame 220 can be made of a relatively lightweight metal material, but non-metallic materials are preferred. These can be ceramic materials, such as alumina ceramics or silicon nitride ceramics, or polymeric materials, such as rubber and plastics, including fluororubber, ethylene propylene rubber, chlorosulfonated polyethylene, silicone rubber, polytetrafluoroethylene, polyvinylidene fluoride, polypropylene, polyvinyl chloride, polyetheretherketone, polysulfone, polyphenylene sulfide, glass fiber reinforced plastics, etc. Alternatively, it can be a non-metallic composite material, such as ceramic matrix composites, carbon / carbon composites, or fluorine-containing composites. These materials all possess good insulation properties and are lightweight, meeting the requirement to reduce the weight of the electrode plate 10.
[0052] In one implementation, please refer to Figure 1 The ring width D1 of the outer frame 210 is 25 mm to 30 mm. Within this range, the ring width of the outer frame 210 can meet the pressure-bearing requirements of the electrode plate 10. Furthermore, even if the outer frame 210 is made entirely of metal, the weight of the entire electrode plate 10 remains within a suitable range, which is beneficial for ensuring the assembly efficiency of the electrolytic cell. The ring width of the outer frame 210 can be 25 mm, 26 mm, 28 mm, 29 mm, 30 mm, etc. Of course, provided that the pressure-bearing and weight requirements are met, the ring width of the outer frame 210 can also be set to a value less than 25 mm or greater than 30 mm, such as 15 mm, 18 mm, 20 mm, 22 mm, 24 mm, or 32 mm, 35 mm, 38 mm, 40 mm, etc.
[0053] In one implementation, please refer to Figure 1The ring width D2 of the pole frame 220 is 30 mm to 40 mm. Within this range, the ring width of the pole frame 220 meets the requirements for constructing the flow channel while also reducing the weight of the pole plate 10. Specifically, the ring width of the pole frame 220 can be 30 mm, 32 mm, 34 mm, 36 mm, 38 mm, 40 mm, etc. Of course, while meeting the requirements for constructing the flow channel and reducing the weight of the pole plate 10, the ring width of the pole frame 220 can also be set to a value less than 30 mm or greater than 40 mm, such as 20 mm, 22 mm, 25 mm, 28 mm, etc., or 42 mm, 45 mm, 48 mm, 50 mm, etc.
[0054] In one embodiment, at least two of the plate 100, the outer frame 210, and the pole frame 220 are formed separately. Designers can flexibly choose the appropriate components based on actual production needs. Alternatively, all three components can be formed separately and then assembled together, connected by welding, gluing, or surface-to-surface fitting. Another option is that one of the plate 100 and the outer frame 210 can be integrally formed with the pole frame 220 using insert injection molding, and then assembled with the other component. Alternatively, the plate 100 and the outer frame 210 can be made of the same material, integrally formed, and then assembled with the pole frame 220. Of course, it is also possible that the outer frame 210 and the plate 100, made of the same material, are integrally formed, and then the pole frame 220 is formed using insert injection molding.
[0055] In one embodiment, the outer periphery of the plate 100 and the pole frame 220 are stacked together, and the inner periphery of the outer frame 210 is connected to the outer periphery of the plate 100. This ensures sufficient contact area between the plate 100 and the pole frame 220, guaranteeing a reliable fit between them. Furthermore, since the inner periphery of the outer frame 210 is connected to the outer periphery of the plate 100, the outer frame 210 provides support for the plate 100, allowing pressure on the plate 100 to be transmitted to the outer frame 210, thus resisting the pressure generated during electrolytic cell operation. Alternatively, in other embodiments, the outer periphery of the plate 100 may be connected to the inner periphery of the pole frame 220, and the outer periphery of the pole frame 220 may be connected to the inner periphery of the outer frame 210.
[0056] The inner periphery of the outer frame 210 can be rigidly connected to the outer periphery of the plate 100. Specifically, the inner periphery of the outer frame 210 is connected to the plate 100 by welding to ensure the connection stability between the outer frame 210 and the plate 100. Alternatively, the outer frame 210 can be rigidly connected to the pole frame 220, or the outer frame 210 can be rigidly connected to both the plate 100 and the pole frame 220.
[0057] Between the plate 100 and the pole frame 220, the plate 100 and the pole frame 220 can be fixed by adhesive bonding, or after the plate 100 and the outer frame 210 are fixed, the plate 100 and the outer frame 210 together form a stacked structure, and the pole frame 220 itself is a separate stacked structure. In the production and assembly of the electrolytic cell, they are installed by stacking them sequentially.
[0058] Alternatively, between the outer frame 210 and the pole frame 220, the inner periphery of the outer frame 210 may abut against the outer periphery of the pole frame 220, or the inner periphery of the outer frame 210 and the outer periphery of the pole frame 220 may be spaced apart.
[0059] In one embodiment, please refer to the following: Figure 1 and Figure 2 The electrode frame 200 includes two separate portions 210 distributed along a first direction, with the outer periphery of the plate 100 sandwiched between the two separate portions 210. Thus, the plate 100 is essentially inserted inside the electrode frame 220, improving the stability of the connection between the electrode frame 220 and the plate 100. Furthermore, dividing the electrode frame 220 into two separate portions 221 to sandwich the plate 100 facilitates the assembly of the electrode frame 220 and the plate 100, improving the assembly convenience of the electrolytic cell. Alternatively, in other embodiments, the electrode frame 220 may be located on one axial side of the plate 100.
[0060] in, Figure 1 and Figure 2 The first direction shown is perpendicular or approximately perpendicular to the electrode 10, but this application is not limited to this. The angle between the first direction and the electrode 10 can be in the range of 75 degrees to 90 degrees, that is, the first direction can deviate from the vertical direction of the electrode 10 by 0 to 15 degrees.
[0061] Specifically, each split section 221 is provided with a sub-channel 2211 extending along the first direction. The sub-channels 2211 of two split sections 221 are opposite to and connected to each other, forming a first flow channel 2201. At least one split section 221 also forms a second flow channel 2202. One end of the second flow channel 2202 is connected to the corresponding sub-channel 2211 of the split section 221, and the other end extends through the inner circumference of the split section 221. It can be understood that an electrolytic chamber will be formed between the plates 100 of adjacent two electrode plates 10. The first flow channel 2201 can be connected to the electrolytic chamber through the second flow channel 2202 to realize the transport of electrolyte or the export of electrolytic products.
[0062] In one implementation, please refer to Figure 2The plate 100 has a clearance opening 110, and at least one of the split portions 221 extends into the clearance opening 110, allowing the two sub-channels 2211 to connect. Thus, the two sub-channels 2211 can directly connect without relying on other structures to construct the first flow guiding channel 2201. In this case, configuring the flow guiding portion 220 as an insulating material reliably ensures the insulation of the first flow guiding channel 2201, which simplifies the design of the electrolytic cell. Of course, in other embodiments, the plate 100 may also have a central channel through which the two sub-channels 2211 are connected.
[0063] Please refer to Figure 1 The split section 220 forms two first flow channels 2201, which are an electrolyte inlet channel and an electrolysis product outlet channel, respectively. For each first flow channel 2201, at least one second flow channel 2202 is provided. Specifically, the electrolyte is introduced through the electrolyte inlet channel and flows from the corresponding second flow channel 2202 to the plate surface of the plate 100. Then, the gas produced carries the electrolyte into the electrolysis product outlet channel through the second flow channel 2202 on the other side.
[0064] In one implementation, please refer to Figure 2 The electrode plate is further provided with two first sealing rings 310, which are sandwiched between the two separate parts 221, and one of the first sealing rings 310 is correspondingly arranged around the outer periphery of one of the first flow channels 2201. That is, one of the first sealing rings 310 is arranged around the outer periphery of the electrolyte inlet channel, and the other first sealing ring 310 is arranged around the outer periphery of the electrolysis product outlet channel. In this way, the first sealing rings can reliably seal the joint between the two separate parts 221, preventing fluid leakage from the corresponding first flow channel 2201, thereby ensuring the operation of the electrolytic cell. Of course, in other embodiments, a sealing structure can also be provided on the outer periphery of the joint between the two separate parts 221.
[0065] In one implementation, please refer to Figure 2 A second sealing ring 320 is provided between the plate 100 and each of the sub-parts 221, and each second sealing ring 320 is arranged around the electrolyte inlet channel and the electrolytic product outlet channel. Specifically, the second sealing ring 320 is located at the contact surface between the plate 100 and the sub-parts 221, and an annular groove can be formed on the contact surface of the sub-parts 221 to allow the second sealing ring 320 to be engaged. In this way, the joint between the plate 100 and the sub-parts 221 can be reliably sealed to prevent leakage of electrolyte and electrolytic products, thereby ensuring the operation of the electrolytic cell. Of course, in other embodiments, a sealing structure can also be provided on the outer periphery of the joint between the plate 100 and the sub-parts 221.
[0066] In one embodiment, please refer to the following: Figures 2 to 6 The two separate parts 221 have corresponding positioning ring protrusions 2212 on their opposite sides. The inner circumferential side of the positioning ring protrusion 2212 is used to accommodate the diaphragm 20, and the outer circumferential side of the positioning ring protrusion 2212 is used to accommodate the sealing gasket 30. In this way, the positioning ring protrusions 2212 can provide a positioning function for the installation of the diaphragm 20 and the sealing gasket 30. The outer circumferential side of the diaphragm 20 can abut against the inner circumferential side of the positioning ring protrusion 2212, and the inner circumferential side of the sealing gasket 30 can abut against the outer circumferential side of the positioning ring protrusion 2212 to ensure the stable fit between the related structures and the electrode plates 10. In addition, adjacent electrode plates 10 can also be connected to each other through the positioning ring protrusions 2212. The top sides of the positioning ring protrusions 2212 abut against each other, which can also provide a positioning function for the installation of the two electrode plates 10. At the same time, the space provided by the two positioning ring protrusions 2212 can be used to accommodate the diaphragm 20 and the sealing gasket 30 at corresponding positions. Of course, in other embodiments, a stepped groove structure can be formed in one of the segments 221, with each step corresponding to a different structure.
[0067] In one embodiment, please refer to the following: Figures 2 to 6 The two separate parts 221 are also provided with corresponding positioning grooves 2213 on opposite sides, which are used to accommodate the electrode 40. In this way, the positioning grooves 2213 can provide a positioning function for the installation of the electrode 40. Specifically, the positioning grooves 2213 are located on the inner circumferential side of the positioning ring protrusion 2212. After the electrode 40 is installed in the positioning grooves 2213, the diaphragm 20 is then covered on the electrode 40.
[0068] In one embodiment, the outer frame 210, the plate 100, and the pole frame 220 are all formed separately, and the inner periphery of the outer frame 210 is connected to the outer periphery of the plate 100 and the outer periphery of the pole frame 220. That is, the outer frame 210 is formed separately, while the plate 100 and the pole frame 220 can be formed separately or integrally by insert injection molding. Without loss of generality, after the outer frame 210 and the plate 100 are formed separately, they are connected as one unit, and then the two separate parts 221 are stacked on opposite sides of the plate 100. In this way, the various parts of the pole plate 10 can be conveniently and reliably assembled.
[0069] Specifically, the inner periphery of the outer frame 210 is connected to the plate 100 by welding. This ensures a stable connection between the outer frame 210 and the plate 100, thereby providing reliable support for the plate 100 through the outer frame 210 to ensure the operation of the electrolytic cell.
[0070] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical 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 electrode plate, characterized in that, The electrode plate includes a plate body (100), an electrode frame (220), and an outer frame (210). The electrode frame (220) is disposed on the outer periphery of the plate body (100), and the outer frame (210) is arranged around the outer periphery of the electrode frame (220) and fixed to at least one of the plate body (100) and the electrode frame (220). The compressive strength of the outer frame (210) is higher than that of the electrode frame (220).
2. The electrode plate as described in claim 1, characterized in that, The outer periphery of the plate (100) and the pole frame (220) are stacked together, and the inner periphery of the outer frame (210) is connected to the outer periphery of the plate (100).
3. The electrode plate as described in claim 2, characterized in that, The pole frame (220) includes two split parts (221) distributed along a first direction, and the outer periphery of the plate (100) is sandwiched between the two split parts (221); The split section (221) is provided with a sub-channel (2211) extending along the first direction. The sub-channels (2211) of the two split sections (221) are opposite to each other and connected to form a first guide channel (2201). At least one of the split sections (221) also forms a second guide channel (2202). One end of the second guide channel (2202) is connected to the sub-channel (2211) of the corresponding split section (221), and the other end extends through the inner periphery of the split section (221).
4. The electrode plate as described in claim 3, characterized in that, The plate (100) has a clearance opening (110), and at least one of the split parts (221) extends into the clearance opening (110) so that the two sub-channels (2211) are connected to each other.
5. The electrode plate as described in claim 4, characterized in that, The electrode plate is also provided with two first sealing rings (310), and the electrode frame (220) forms two first flow channels (2201). The first sealing rings (310) are sandwiched between the two split parts (221), and one of the first sealing rings (310) is correspondingly arranged around the outer periphery of one of the first flow channels (2201).
6. The electrode plate as described in claim 3, characterized in that, The electrode frame (220) has two first flow channels (2201), which are electrolyte inlet channels and electrolytic product outlet channels, respectively. A second sealing ring (320) is provided between the plate body (100) and each of the sub-parts (221), and each of the second sealing rings (320) is arranged around the electrolyte inlet channel and the electrolytic product outlet channel.
7. The electrode plate as described in claim 3, characterized in that, The two separate parts (221) are provided with positioning ring protrusions (2212) on opposite sides. The inner circumferential side of the positioning ring protrusions (2212) is used to accommodate the diaphragm (20), and the outer circumferential side of the positioning ring protrusions (2212) is used to accommodate the sealing gasket (30). And / or, the opposite sides of the two said split parts (221) are also provided with corresponding positioning grooves (2213), which are used to accommodate the electrode (40).
8. The electrode plate as described in claim 2, characterized in that, The inner periphery of the outer frame (210) is connected to the plate (100) by welding.
9. The electrode plate according to any one of claims 1 to 8, characterized in that, The density of the pole frame (220) is less than the density of the outer frame (210); And / or, the material of the polar frame (220) is different from the material of the outer frame (210); And / or, the outer frame (210) is configured to be made of metal; And / or, the pole frame (220) is configured as a polymer material; And / or, the circumference width of the outer frame (210) is 25 mm to 30 mm; And / or, the ring width of the pole frame (220) is 30 mm to 40 mm; And / or, at least two of the plate (100), the outer frame (210) and the pole frame (220) are formed separately.
10. An electrolytic cell, characterized in that, It includes two end plates (50) and a plurality of electrode plates as described in any one of claims 1 to 9, wherein the plurality of electrode plates (10) are disposed between the two end plates (50) and the two end plates (50) are connected by a pull rod (60).