Electrolytic apparatus and electrolytic cell

Abstract

The embodiment of the application discloses an electrolysis device and an electrolytic tank, and relates to the field of hydrogen production. The electrolysis device comprises a polar plate assembly, an electrode assembly and a support assembly. The polar plate assembly comprises a first bipolar plate, a second bipolar plate and a gasket. The first bipolar plate comprises a first polar frame and a first main plate connected to the first polar frame. The second bipolar plate comprises a second polar frame and a second main plate connected to the second polar frame. The gasket is arranged between the first polar frame and the second polar frame. The electrode assembly comprises a first electrode, a diaphragm and a second electrode which are sequentially arranged between the gasket and the second polar frame. The gasket abuts one side of the first electrode and the diaphragm, and the second polar frame abuts the other side of the second electrode and the diaphragm. The support assembly comprises a first support body and a second support body. The first support body is arranged between the first electrode and the first main plate, and the second support body is arranged between the second electrode and the second main plate. The technical scheme provided by the embodiment of the application aims to improve the practicability and reliability of the electrolysis device.

Description

Technical Field

[0001] The embodiments in this application relate to the field of hydrogen production, and in particular to an electrolysis device and an electrolyzer. Background Technology

[0002] In related technologies, an electrolysis device can be equipped with a support structure between the main electrode plate and the electrode. With the support of the support structure, the distance between the positive electrode and the negative electrode can be reduced more effectively, thereby improving the electrolysis efficiency.

[0003] However, the connection between the electrode and the diaphragm and the electrode frame is prone to bending under the pressure of the supporting structure, forming a triangular gap. This causes the electrolyte solution to easily accumulate in the triangular gap, forming a eddy current, which affects the electrolysis effect of the electrolysis device. Utility Model Content

[0004] Several embodiments in this application provide an electrolysis apparatus and an electrolytic cell, which aim to improve the practicality and reliability of the electrolysis apparatus.

[0005] An embodiment of this application provides an electrolysis apparatus comprising an electrode assembly, an electrode assembly, and a support assembly. The electrode assembly includes a first bipolar plate, a second bipolar plate, and a gasket. The first bipolar plate includes a first electrode frame and a first main body plate connected to the first electrode frame. The second bipolar plate includes a second electrode frame and a second main body plate connected to the second electrode frame. The gasket is disposed between the first electrode frame and the second electrode frame. The electrode assembly includes a first electrode, a diaphragm, and a second electrode sequentially stacked between the gasket and the second electrode frame. The gasket abuts against one side of the first electrode and the diaphragm, and the second electrode frame abuts against the other side of the second electrode and the diaphragm. The support assembly includes a first support body and a second support body. The first support body is disposed between the first electrode and the first main body plate, and the second support body is disposed between the second electrode and the second main body plate.

[0006] In one embodiment, the distance between the first main plate and the first electrode is greater than the distance between the second main plate and the second electrode, and the thickness of the first support is greater than the thickness of the second support.

[0007] In one embodiment, the electrolysis device has a front-back direction, the first electrode frame has a center line perpendicular to the front-back direction, and the first main body plate is located behind the center line of the first electrode frame; the second electrode frame has a center line perpendicular to the front-back direction, and the second main body plate is located behind the center line of the second electrode frame; the distance between the first main body plate and the first electrode is equal to the distance between the second main body plate and the second electrode.

[0008] In one embodiment, the pad has a first clearance groove on the side facing the second electrode frame, and the first electrode is disposed in the first clearance groove.

[0009] In one embodiment, the second electrode frame has a second clearance groove on the side facing the pad, and the second electrode is disposed in the second clearance groove.

[0010] In one embodiment, the second pole frame is further provided with a third clearance groove on the side facing the gasket, and the diaphragm is disposed in the third clearance groove.

[0011] In one embodiment, the first pole frame has a first platform structure protruding on the side facing the gasket, and the second pole frame has a second platform structure protruding on the side facing the gasket, with the first platform structure and the second platform structure respectively pressing against the opposite sides of the gasket.

[0012] In one embodiment, the first tabletop has at least two first annular protrusions spaced apart along a direction away from the first main body plate, and the second tabletop has at least two second annular protrusions spaced apart along a direction away from the second main body plate.

[0013] In one embodiment, the electrolysis device has a front-to-back direction, and at least two of the first annular protrusions and at least two of the second annular protrusions are staggered along the front-to-back direction.

[0014] An embodiment of this application also provides an electrolytic cell comprising the electrolysis apparatus described above.

[0015] In the various embodiments provided in this application, by sequentially stacking the first electrode, the diaphragm, and the second electrode between the gasket and the second electrode frame, the electrode assembly can be better maintained in close fit, avoiding the gasket separating the first electrode and the diaphragm. This helps to reduce the bending of the electrode assembly caused by the pressure and support of the first and second supports, reduces the triangular gaps caused by the bending of the electrode assembly, effectively prevents eddies generated by the flow of the electrolyte solution in the electrolysis chamber, ensures the ion exchange rate of the electrolyte solution decomposition, and further improves the electrolysis effect of the electrolysis device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments or prior art of this application, the drawings used in the description of the embodiments or 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.

[0017] Figure 1This is a schematic diagram of the structure of an embodiment of an electrolysis device in the prior art; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the structure of an embodiment of the electrolysis apparatus provided in this application; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 for Figure 3 A magnified view of a section at point C; Figure 6 for Figure 3 A partial enlarged view of an embodiment at point D; Figure 7 for Figure 3 A partial enlarged view of another embodiment at point D. Figure 8 This is a schematic diagram of another embodiment of the electrolysis apparatus provided in this application.

[0018] Explanation of icon numbers: 11a, Bipolar plate; 13a, Gasket; 31a, Cathode mesh; 33a, Diaphragm; 35a, Anode mesh; 50a, Support structure; 70a, Triangular gap.

[0019] 100. Electrolysis apparatus; 10. Electrode assembly; 11. First bipolar plate; 111. First electrode frame; 1111. First annular protrusion; 113. First main body plate; 13. Second bipolar plate; 131. Second electrode frame; 1331. Second clearance groove; 1333. Third clearance groove; 1335. Second annular protrusion; 133. Second main body plate; 15. Gasket; 151. First clearance groove; 30. Electrode assembly; 31. First electrode; 33. Diaphragm; 35. Second electrode; 50. Support assembly; 51. First support body; 53. Second support body. Detailed Implementation

[0020] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of several embodiments. 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.

[0021] It should be noted that if multiple 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.

[0022] Furthermore, if multiple 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 implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. 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.

[0023] In related technologies, electrolysis devices can incorporate a support structure between the main electrode plate and the electrodes. This support structure helps reduce the distance between the positive and negative electrodes, improving electrolysis efficiency. However, the connection points between the electrodes and the diaphragm and the electrode frame are prone to bending under the pressure of the support structure, forming triangular gaps. This causes the electrolyte solution to accumulate in these gaps, forming eddies and affecting the electrolysis effect of the device.

[0024] like Figure 1 and Figure 2 As shown, most existing electrolysis devices are assembled in the following order: bipolar plate 11a, support structure 50a, cathode mesh 31a, gasket 13a, diaphragm 33a, anode mesh 35a, support structure 50a, and bipolar plate 11a stacked in sequence. In the assembled electrolysis device, the cathode mesh 31a and diaphragm 33a are separated on both sides of the gasket 13a, and the anode mesh 35a is located on the side of the diaphragm 33a facing away from the gasket 13a. The edges of the cathode mesh 31a, diaphragm 33a, and anode mesh 35a are all located between the pole frames of the two bipolar plates 11a. Under the support of the support structure 50a, the anode mesh 35a and cathode mesh 31a move closer to each other. At this time, it is easy for the edges of the anode mesh 35a, diaphragm 33a, and cathode mesh 31a to bend, forming a shape like... Figure 2As shown in the diagram, when the electrolyte solution flows into the electrolysis chamber formed by the two bipolar plates 11a, eddies easily form in the triangular gap 70a region. This affects the flow of the electrolyte solution within the electrolysis chamber, reduces the migration and exchange rate of ions in the solution, and consequently affects the electrolysis effect of the electrolysis device, thus reducing its practicality and structural reliability. To address these issues, this application proposes an electrolysis device 100.

[0025] Please see Figure 3 and Figure 4 In one embodiment of this application, the electrolysis device 100 includes an electrode assembly 10, an electrode assembly 30, and a support assembly 50. The electrode assembly 10 includes a first bipolar plate 11, a second bipolar plate 13, and a gasket 15. The first bipolar plate 11 includes a first pole frame 111 and a first main plate 113 connected to the first pole frame 111. The second bipolar plate 13 includes a second pole frame 131 and a second main plate 133 connected to the second pole frame 131. The gasket 15 is disposed between the first pole frame 111 and the second pole frame 131. The electrode assembly 30 includes a first electrode 31, a diaphragm 33, and a second electrode 35, which are sequentially stacked between the gasket 15 and the second electrode frame 131. The gasket 15 abuts against one side of the first electrode 31 and the diaphragm 33, and the second electrode frame 131 abuts against the other side of the second electrode 35 and the diaphragm 33. The support assembly 50 includes a first support body 51 and a second support body 53. The first support body 51 is disposed between the first electrode 31 and the first main body plate 113, and the second support body 53 is disposed between the second electrode 35 and the second main body plate 133.

[0026] In this application, the first main body plate 113 can be connected to the inner wall of the first pole frame 111, with the opposite sides of the first main body plate 113 spaced apart from the two ends of the first pole frame 111 by a certain distance. The structure of the second bipolar plate 13 is similar to that of the first bipolar plate 11, and the second main body plate 133 can be connected to the inner wall of the first pole frame 111, with the opposite sides of the first main body plate 113 spaced apart from the two ends of the second pole frame 131 by a certain distance. By using the first pole frame 111 of the first bipolar plate 11 and the second pole frame 131 of the second bipolar plate 13 to clamp the gasket 15, the first main body plate 113, the first pole frame 111, the second pole frame 131, and the second main body plate 133 can form a certain sealed cavity. By placing the electrode assembly 30 between the gasket 15 and the second electrode frame 131, the gasket 15 and the electrode assembly 30 can be assembled and clamped by the cooperation of the first electrode frame 111 and the second electrode frame 131. At this time, the electrode assembly 30 can sequentially stack and adhere the first electrode 31, the diaphragm 33, and the second electrode 35, and can make one side of the first electrode 31 and the diaphragm 33 abut against the side of the gasket 15 facing the second electrode frame 131, and make the other side of the second electrode 35 and the diaphragm 33 abut against the second electrode frame 131. On the side of the electrode frame 131 facing the gasket 15, under the pressing action of the first electrode frame 111 and the second electrode frame 131, one side of the diaphragm 33 can be enclosed with the first main plate 113, the first electrode frame 111 and the gasket 15 to form an electrolysis chamber, and the other side of the diaphragm 33 can be enclosed with the second main plate 133 and the second electrode frame 131 to form another electrolysis chamber, so that the electrolyte solution can be electrolyzed in the two electrolysis chambers to generate hydrogen and oxygen respectively, thereby realizing the stable operation of the electrolysis device 100.

[0027] The first electrode 31 can be a cathode mesh, and the second electrode 35 can be an anode mesh. The first electrode 31 and the second electrode 35 can be connected to the negative and positive terminals of an external power source, respectively. The diaphragm 33 can be a selectively permeable membrane, so that the diaphragm 33 can isolate the solution while allowing ions to pass through. This allows a reduction reaction to occur in the electrolytic chamber where the first electrode 31 is located, causing the electrolytic solution to gain electrons and decompose to produce hydrogen and hydroxide ions. The hydroxide ions can then pass through the diaphragm 33 into the electrolytic chamber where the second electrode 35 is located, where an oxidation reaction occurs, causing the hydroxide ions to be oxidized to produce oxygen and water. Thus, hydrogen and oxygen can be produced from the two electrolytic chambers respectively, achieving stable operation of the electrolytic hydrogen and oxygen production equipment.

[0028] Furthermore, by using a first support 51 positioned between the main electrode plate and the first electrode 31, and a second support 53 positioned between the main electrode plate and the second electrode 35, the first support 51 abuts against and supports the first electrode 31, ensuring the first electrode 31 remains stably close to the diaphragm 33. Simultaneously, the second support 53 abuts against and supports the second electrode 35, ensuring the second electrode 35 remains stably close to the diaphragm 33. This effectively reduces the distance between the first electrode 31 and the second electrode 35, allowing ions generated during electrolysis to pass through the diaphragm 33 more quickly and react, thus improving the electrolysis reaction rate of the electrolysis device 100. The first and second supports 51 and 53 can be made of a material with a certain degree of elasticity, allowing the support assembly 50 to buffer the deformation of the electrode plate assembly 10 using the elastic deformation of the first and second supports 51 and 53, maintaining support for the first electrode 31 and the second electrode 35, and enabling the electrolysis device 100 to maintain a high electrolysis reaction rate.

[0029] By stacking the first electrode 31, diaphragm 33, and second electrode 35 sequentially, and using the gasket 15 and the second electrode frame 131 to clamp the first electrode 31, diaphragm 33, and second electrode 35, the installation of the first electrode 31 and diaphragm 33 separated by the gasket 15 can be effectively avoided. At this time, the first support 51 and the second support 53 can be prevented from pushing the first electrode 31 and the second electrode 35 closer together, which would cause bending at the connection between the electrode assembly 30 and the gasket 15 and the second electrode frame 131. This effectively reduces the triangular area formed by bending on the outer periphery of the electrode assembly 30, thereby reducing the eddy currents generated by the flow of the electrolyte solution in the sealed cavity enclosed by the first bipolar plate 11 and the second bipolar plate 13. This allows the electrolyte solution to flow stably in the electrolysis chambers on both sides of the diaphragm 33, ensuring the ion exchange rate of the electrolyte solution and improving the electrolysis effect of the electrolysis device 100.

[0030] Furthermore, by using the spacer 15 and the second pole frame 131 to clamp the electrode assembly 30, the spacer 15 is prevented from separating the first electrode 31 and the diaphragm 33, reducing the bending of the electrode assembly 30. It also helps to reduce the squeezing force on the first electrode 31, the diaphragm 33 and the second electrode 35 by the fitting assembly of the first pole frame 111 and the second pole frame 131, preventing damage to the electrodes and ensuring the stable electrolysis operation of the electrolysis device 100.

[0031] In one embodiment of this application, by sequentially stacking the first electrode 31, the diaphragm 33, and the second electrode 35 between the gasket 15 and the second electrode frame 131, the electrode assembly 30 can be better fitted together, avoiding the gasket 15 separating the first electrode 31 and the diaphragm 33. This helps to reduce the bending of the electrode assembly 30 caused by the pressure and support of the first support body 51 and the second support body 53, reducing the triangular gaps caused by the bending of the electrode assembly 30, effectively preventing eddies generated by the flow of the electrolyte solution in the electrolysis chamber, ensuring the ion exchange rate of the electrolyte solution decomposition, and further improving the electrolysis effect of the electrolysis device 100.

[0032] See Figure 4 In one embodiment of this application, the distance between the first main body plate 113 and the first electrode 31 is greater than the distance between the second main body plate 133 and the second electrode 35, and the thickness of the first support 51 is greater than the thickness of the second support 53.

[0033] It is understandable that when the first bipolar plate 11 and the second bipolar plate 13 adopt similar structural dimensions, the electrode assembly 30 is clamped by the spacer 15 and the second electrode frame 131. At this time, the distance between the first electrode 31 and the first main plate 113 in the electrode assembly 30 can be greater than the distance between the second electrode 35 and the second main plate 133. To better prevent the electrode assembly 30 from bending under the support of the first support body 51 and the second support body 53, the support assembly 50 can adopt an asymmetrical design for the first support body 51 and the second support body 53. For example, the elastic coefficient of the first support body 51 can be set to be greater than that of the second support body 53. After the first bipolar plate 11 and the second bipolar plate 13 are assembled, the greater elasticity of the first support body 51 can be used to push against the electrode assembly 30 and compress the second support body 53. The thickness of the first support body 51 can be set to be greater than that of the second support body 53. This allows the support assembly 50 to better match the distance between the electrode assembly 30 and the first main plate 113 and the second main plate 133, thereby better maintaining the electrode assembly 30 in a flat stacked arrangement and further preventing the electrode assembly 30 from bending.

[0034] Alternatively, the first support 51 and the second support 53 can be made of the same material, and the first support 51 and the second support 53 can be set with different thicknesses, so that the thickness of the first support 51 is greater than the thickness of the second support 53. In this way, the thickness of the first support 51 can be set to correspond to the distance between the first main plate 113 and the first electrode 31, and the thickness of the second support 53 can be set to correspond to the distance between the second main plate 133 and the second electrode 35. This better avoids the electrode assembly 30 from bending due to the support, so that the electrode assembly 30 can be better stacked flat between the pad 15 and the second electrode frame 131, further improving the overall structural stability and reliability of the electrolysis device 100.

[0035] In addition, see Figure 8 In one embodiment of this application, the electrolysis apparatus 100 has a front-back direction, the first electrode frame 111 has a center line perpendicular to the front-back direction, and the first main body plate 113 is located behind the center line of the first electrode frame 111; the second electrode frame 131 has a center line perpendicular to the front-back direction, and the second main body plate 133 is located behind the center line of the second electrode frame 131; the distance between the first main body plate 113 and the first electrode 31 is equal to the distance between the second main body plate 133 and the second electrode 35.

[0036] In this embodiment, the front-back direction of the electrolysis device 100 can be the direction in which the first bipolar plate 11, the gasket 15, and the second bipolar plate 13 are assembled. By setting the first main body plate 113 off the center line of the first electrode frame 111 and setting the second main body plate 133 off the center line of the second electrode frame 131, when the gasket 15 and the second electrode frame 131 clamp the electrode assembly 30, the distance between the first main body plate 113 and the first electrode 31 can be equal to the distance between the second main body plate 133 and the second electrode 35. This makes the spatial volume of the electrolysis chamber where the first electrode 31 is located similar to the spatial volume of the electrolysis chamber where the second electrode 35 is located. This is beneficial for setting the first support body 51 and the second support body 53 to adopt the same structural dimensions, better avoiding the bending of the electrode assembly 30 due to the pressure of the support assembly 50, so that the electrode assembly 30 can be stably kept in a flat stacked position, further improving the overall structural stability and reliability of the electrolysis device 100.

[0037] See Figure 4 In one embodiment of this application, the pad 15 is provided with a first clearance groove 151 on the side facing the second electrode frame 131, and the first electrode 31 is disposed in the first clearance groove 151.

[0038] In this embodiment, by providing a first clearance groove 151 on the gasket 15 to accommodate the first electrode 31, the squeezing force acting on the first electrode 31 during the assembly of the first bipolar plate 11 and the second bipolar plate 13 can be reduced, so that the pressure can be better concentrated on the gasket 15, ensuring the sealing effect of the gasket 15 on the gap between the first electrode frame 111 and the second electrode frame 131, better preventing the first electrode 31 from being crushed, and further improving the overall structural stability and reliability of the electrolysis device 100.

[0039] See Figure 4 In one embodiment of this application, the second electrode frame 131 is provided with a second clearance groove 1331 on the side facing the pad 15, and the second electrode 35 is disposed in the second clearance groove 1331.

[0040] In this embodiment, by providing a second clearance groove 1331 on the second electrode frame 131 to accommodate the second electrode 35, the squeezing force acting on the second electrode 35 during the assembly of the first bipolar plate 11 and the second bipolar plate 13 can be better reduced, so that the pressure can be better concentrated on the gasket 15, avoiding the second electrode 35 from being damaged by the pressure of the first electrode frame 111 and the second electrode frame 131, and further improving the overall structural stability and reliability of the electrolysis device 100.

[0041] See Figure 4 and Figure 5 In one embodiment of this application, the second pole frame 131 is further provided with a third clearance groove 1333 on the side facing the gasket 15, and the diaphragm 33 is disposed in the third clearance groove 1333.

[0042] In this embodiment, by providing a third clearance groove 1333 on the second electrode frame 131, the third clearance groove 1333 and the second clearance groove 1331 can be arranged sequentially in a direction away from the gasket 15. Since the area of ​​the diaphragm 33 is usually larger than the area of ​​the first electrode 31 and the second electrode 35, the width of the third clearance groove 1333 can be correspondingly larger than the width of the second clearance groove 1331. This results in a stepped second clearance groove 1331 and a third clearance groove 1333 being formed on the second electrode frame 131. The second clearance groove 1331 is used to accommodate the second electrode 35, and the third clearance groove 1333 is used to accommodate the diaphragm 33. This can better reduce the squeezing force acting on the electrode assembly 30 during the assembly of the first bipolar plate 11 and the second bipolar plate 13, avoid the electrode assembly 30 from being damaged due to stress, and further improve the overall structural stability and reliability of the electrolysis device 100.

[0043] See Figure 6In one embodiment of this application, a first platform structure is provided on the side of the first pole frame 111 facing the pad 15, and a second platform structure is provided on the side of the second pole frame 131 facing the pad 15. The first platform structure and the second platform structure respectively press against the opposite sides of the pad 15.

[0044] In this embodiment, the first platform structure can be disposed on the first electrode frame 111 away from the first main body plate 113, so that the first platform structure is disposed at the surface edge of the first electrode frame 111; similarly, the second platform structure can be disposed on the second electrode frame 131 away from the second main body plate 133, so that the second platform structure is disposed at the surface edge of the second electrode frame 131. The first platform structure and the second platform structure can be disposed around the electrode assembly 30. When the first bipolar plate 11 and the second bipolar plate 13 are fitted together to hold the gasket 15, the first platform structure and the second platform structure can respectively press against the opposite sides of the gasket 15, which can effectively increase the contact friction between the first electrode frame 111 and the second electrode frame 131 and the gasket 15, so that the first electrode frame 111 and the second electrode frame 131 can clamp the gasket 15 more firmly, so that the gasket 15 can better seal the gap between the first electrode frame 111 and the second electrode frame 131, achieve a better sealing effect, and further improve the overall structural stability and reliability of the electrolysis device 100.

[0045] Furthermore, the assembly of the electrode assembly 10 by using the first platform structure and the second platform structure pressure pad 15 respectively protruding on the first pole frame 111 and the second pole frame 131 is also beneficial to concentrate the assembly force of the first pole frame 111 and the second pole frame 131 on the pad 15, reduce the force on the electrode assembly 30, better avoid damage to the electrode assembly 30, and ensure the stable operation of the electrolysis device 100.

[0046] The first platform structure can be designed with a ring-shaped protrusion or with multiple protrusions arranged in an array; similarly, the second platform structure can be designed with a ring-shaped protrusion or with multiple protrusions arranged in an array. This application does not limit the specific structural form of the first and second platform structures.

[0047] See Figure 6 In one embodiment of this application, the first tabletop is provided with at least two first annular protrusions 1111 spaced apart along a direction away from the first main body plate 113, and the second tabletop is provided with at least two second annular protrusions 1335 spaced apart along a direction away from the second main body plate 133.

[0048] In this embodiment, the first platform structure can be provided with at least two first annular protrusions 1111 arranged sequentially at intervals along the direction away from the first main body plate 113, and the second platform structure can be provided with at least two second annular protrusions 1335 arranged sequentially at intervals along the direction away from the second main body plate 133. By using at least two first annular protrusions 1111 and at least two second annular protrusions 1335, the frictional force between the first pole frame 111 and the second pole frame 131 and the gasket 15 can be further increased, better preventing the gasket 15 from slipping between the first pole frame 111 and the second pole frame 131, achieving better sealing performance of the electrode assembly 10, and further improving the overall structural stability and reliability of the electrolysis device 100.

[0049] See Figure 7 In one embodiment of this application, the electrolysis device 100 is provided in the front-back direction, with at least two first annular protrusions 1111 and at least two second annular protrusions 1335 staggered in the front-back direction.

[0050] In this embodiment, by staggering at least two first annular protrusions 1111 and at least two second annular protrusions 1335 in the front-rear direction, the at least two first annular protrusions 1111 and at least two second annular protrusions 1335 can form a mutually engaging meshing relationship, so that the force directions of the first platform structure and the second platform structure on the opposite sides of the gasket 15 are intersected, so that the first pole frame 111 and the second pole frame 131 can form a biting clamping relationship for the gasket 15, which is beneficial to further improve the assembly stability and sealing of the electrode assembly, and realize a more stable and reliable overall structural design of the electrolysis device 100.

[0051] This application also proposes an electrolytic cell, which includes an electrolysis device 100. The specific structure of the electrolysis device 100 is as described in the above embodiments. Since this electrolytic cell adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0052] 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 electrolysis apparatus (100), characterized in that, include: The electrode assembly (10) includes a first bipolar plate (11), a second bipolar plate (13), and a gasket (15). The first bipolar plate (11) includes a first pole frame (111) and a first main plate (113) connected to the first pole frame (111). The second bipolar plate (13) includes a second pole frame (131) and a second main plate (133) connected to the second pole frame (131). The gasket (15) is disposed between the first pole frame (111) and the second pole frame (131). Electrode assembly (30), the electrode assembly (30) includes a first electrode (31), a diaphragm (33) and a second electrode (35) sequentially stacked between the gasket (15) and the second electrode frame (131), the gasket (15) abutting one side of the first electrode (31) and the diaphragm (33), and the second electrode frame (131) abutting the other side of the second electrode (35) and the diaphragm (33); The support assembly (50) includes a first support body (51) and a second support body (53). The first support body (51) is disposed between the first electrode (31) and the first main plate, and the second support body (53) is disposed between the second electrode (35) and the second main plate.

2. The electrolysis apparatus (100) as described in claim 1, characterized in that, The distance between the first main plate (113) and the first electrode (31) is greater than the distance between the second main plate (133) and the second electrode (35), and the thickness of the first support (51) is greater than the thickness of the second support (53).

3. The electrolysis apparatus (100) as described in claim 1, characterized in that, The electrolysis device (100) has a front-back direction, the first pole frame (111) has a center line perpendicular to the front-back direction, and the first main body plate (113) is located on the rear side of the center line of the first pole frame (111). The second pole frame (131) has a center line perpendicular to the front-back direction, and the second main body plate (133) is located on the rear side of the center line of the second pole frame (131); The distance between the first main plate (113) and the first electrode (31) is equal to the distance between the second main plate (133) and the second electrode (35).

4. The electrolysis apparatus (100) as described in claim 1, characterized in that, The pad (15) has a first clearance groove (151) on the side facing the second electrode frame (131), and the first electrode (31) is disposed in the first clearance groove (151).

5. The electrolysis apparatus (100) as described in claim 4, characterized in that, The second electrode frame (131) has a second clearance groove (1331) on the side facing the pad (15), and the second electrode (35) is disposed in the second clearance groove (1331).

6. The electrolysis apparatus (100) as described in claim 5, characterized in that, The second pole frame (131) is further provided with a third clearance groove (1333) on the side facing the gasket (15), and the diaphragm (33) is provided in the third clearance groove (1333).

7. The electrolysis apparatus (100) as described in claim 1, characterized in that, The first pole frame (111) has a first platform structure protruding on one side facing the pad (15), and the second pole frame (131) has a second platform structure protruding on one side facing the pad (15). The first platform structure and the second platform structure respectively press against the opposite sides of the pad (15).

8. The electrolysis apparatus (100) as described in claim 7, characterized in that, The first tabletop has at least two first annular protrusions (1111) spaced apart in a direction away from the first main body plate (113), and the second tabletop has at least two second annular protrusions (1335) spaced apart in a direction away from the second main body plate (133).

9. The electrolysis apparatus (100) as described in claim 8, characterized in that, The electrolysis device (100) is provided in a front-back direction, with at least two first annular protrusions (1111) and at least two second annular protrusions (1335) staggered in the front-back direction.

10. An electrolytic cell, characterized in that, The electrolytic cell includes an electrolysis apparatus (100) as described in any one of claims 1 to 9.

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