Electrolytic bath device

Abstract

The invention relates to an electrolytic bath device which comprises electrode plates and a membrane electrode, gaskets are laid on the surfaces of the two sides of the membrane electrode respectively, each gasket, the membrane electrode and the electrode plate define an electrolytic cavity, a sealing ring is located between every two adjacent electrode plates, a first sealing part of each sealing ring is clamped between the corresponding electrode plate and the corresponding gasket so as to seal the electrolytic cavity, and a second sealing part of each sealing ring is clamped between the corresponding electrode plate and the corresponding gasket. The second sealing part of the sealing ring extends from the first sealing part to the end part of the gasket to abut against the gasket, so that the first sealing part can be sealed again, the gap between the gasket and the membrane electrode can be sealed, the sealing effect of the electrolytic cell in a high-pressure environment is improved, the gasket is supported by the second sealing part, and the service life of the electrolytic cell is prolonged. The gasket and the membrane electrode can be effectively supported from the side surface, the electrolytic cell is effectively prevented from deforming due to internal high voltage and deforming due to gravity during transverse arrangement, the internal structural strength and the sealing performance of the electrolytic cell are further improved, and the adaptive capacity of the electrolytic cell in internal and external high-voltage environments is enhanced.

Description

Technical Field

[0001] The present application relates to the field of water electrolysis and to an electrolytic cell device. Background Art

[0002] In the field of water electrolysis, an electrolytic cell is usually used to electrolyze water to produce hydrogen and oxygen. The electrolytic cell consists of a cell body, an anode, a cathode and a diaphragm. The diaphragm is arranged between the anode and the cathode to separate the anode chamber from the cathode chamber. Electrolyte is added to the electrolytic cell. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution to produce the required gas.

[0003] In the prior art, the anode chamber and cathode chamber in the electrolytic cell are usually sealed with a single rubber ring. On the one hand, due to the simple structure and soft material of the traditional rubber ring, it is difficult to adapt to the high-pressure environment. It is easy to deform when used in a long-term high-pressure environment, resulting in sealing failure and affecting the service life of the electrolytic cell. On the other hand, the chemical reaction inside the electrolytic cell will generate internal force to form a high-pressure environment inside the electrolytic cell, causing the internal structure of the electrolytic cell to loosen easily due to the high pressure, affecting the sealing effect and structural stability. On the other hand, the electrolytic cell is usually composed of a plurality of electrode plates and membrane electrodes stacked in sequence and arranged horizontally. The electrode plates are easily deformed due to their own gravity for a long time, especially the electrode plate wings in the middle position droop, causing the electrolytic cell to bend downward in an arc deformation, which not only affects the sealing effect, but also easily causes damage to the electrolytic cell. Therefore, the traditional sealing tank structure is difficult to meet the sealing and strength requirements under high-pressure environments. Summary of the invention

[0004] In order to solve or at least partially solve the above technical problems, the present application provides an electrolytic cell device, comprising:

[0005] At least two electrode plates arranged opposite to each other;

[0006] A membrane electrode is located between every two adjacent electrode plates;

[0007] Gaskets are laid on both side surfaces of the membrane electrode, and each of the gaskets, the membrane electrode and the electrode plate form an electrolysis chamber;

[0008] A sealing ring is located between every two adjacent electrode plates, and the sealing ring includes a first sealing portion and a second sealing portion, wherein the first sealing portion is clamped between the electrode plate and the gasket to seal the electrolysis chamber, and the second sealing portion extends from the first sealing portion to the end of the gasket to abut against the gasket.

[0009] Optionally, the second sealing portion is seamlessly connected to the two first sealing portions on both sides of the gasket, and is arranged around the outside of the end of the gasket to surround the gasket and the membrane electrode, and the second sealing portion is used to seal the gap between the first sealing portion and the gasket, and the gap between the gasket and the membrane electrode.

[0010] Optionally, two sides of the second sealing portion respectively form a chimeric structure with the electrode plate, and the chimeric structures on both sides of the second sealing portion are arranged in pairs.

[0011] Optionally, the interlocking structure includes a groove formed on the surface of the electrode plate, and an elastic protrusion formed on the surface of the second sealing portion, and the elastic protrusion is interlocked in the groove to seal the gap between the second sealing portion and the electrode plate and can limit the second sealing portion.

[0012] Optionally, the interlocking structure further includes a protrusion formed on one side of the groove, wherein the protrusion protrudes from a surface of the electrode plate facing the second sealing portion to limit the elastic protrusion.

[0013] Optionally, the groove and the protrusion are provided in plurality, and each of the grooves and each of the protrusions are respectively arranged around the surface of the electrode plate to form a closed loop;

[0014] A plurality of the elastic protrusions are arranged corresponding to the grooves, and each of the elastic protrusions is arranged around the surface of the second sealing portion to form a closed loop.

[0015] Optionally, the electrolytic cell device includes at least three electrode plates and at least two sealing rings, the grooves on both sides of the same electrode plate are arranged alternately, the protrusions are formed on the back side of each groove, and the elastic protrusions of the sealing rings on both sides of the same electrode plate are arranged alternately.

[0016] Optionally, the sealing ring also includes a third sealing portion, which is seamlessly connected to the end of the second sealing portion and surrounds the second sealing portion, the third sealing portion is located between every two adjacent electrode plates, and a support member is provided inside the third sealing portion, and the hardness of the support member is greater than the hardness of the third sealing portion.

[0017] Optionally, a receiving groove is formed on a surface of the third sealing portion away from the second sealing portion, the receiving groove is arranged around the third sealing portion to form a closed loop, and the support member is arranged in the receiving groove and surrounds the second sealing portion.

[0018] Optionally, the gasket and the membrane electrode are respectively provided with corresponding clamping holes;

[0019] The electrolytic cell device further comprises a clamping block, which can be correspondingly inserted into the clamping holes of the gasket and the membrane electrode to limit the position of the membrane electrode and the gasket.

[0020] Optionally, a channel penetrating the electrolytic cell device is provided in the region of the first sealing portion, and a through hole connecting the channel with the electrolytic chamber is provided on the gasket; wherein the channel includes a water channel and a gas channel, and the through hole includes a water channel through hole and a gas channel through hole;

[0021] The electrolysis chambers are respectively connected to the water channel through the water channel through holes, and are connected to the gas channel through the gas channel through holes.

[0022] Optionally, the membrane electrode comprises a diaphragm and a diffusion layer located on the surface of the diaphragm, the diffusion layer is located in the electrolysis chamber, and the diffusion layer comprises titanium felt and / or carbon paper.

[0023] The electrolytic cell device provided in the present application forms a layered structure through electrode plates, gaskets and membrane electrodes, the gaskets, membrane electrodes and electrode plates form an electrolytic chamber, and the sealing ring is arranged between the two electrode plates, wherein the first sealing portion of the sealing ring is clamped between the electrode plates and the gasket to seal the electrolytic chamber, and the second sealing portion of the sealing ring extends from the first sealing portion to the end of the gasket to abut the gasket, which can not only re-seal the first sealing portion, but also seal the gap between the gasket and the membrane electrode, thereby improving the sealing effect of the electrolytic cell under high pressure environment, and the second sealing portion also realizes support for the gasket, which can effectively support the gasket and the membrane electrode from the side, effectively preventing the electrolytic cell from being deformed due to internal high pressure and deformation due to gravity when arranged horizontally, further improving the internal structural strength and sealing of the electrolytic cell, and enhancing the adaptability of the electrolytic cell to internal and external high pressure environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the implementation of the present application, the following is a brief introduction to the relevant drawings. It is understood that the drawings described below are only used to illustrate some implementations of the present application, and those skilled in the art can also obtain many other technical features and connection relationships not mentioned in this document based on these drawings.

[0025] Figure 1 This is a schematic diagram of the structure of the electrolytic cell device of this application;

[0026] Figure 2 This is an exploded schematic diagram of the electrolytic cell device of the present application;

[0027] Figure 3 This is an exploded schematic diagram of the internal structure of the sealing ring of the electrolytic cell device of the present application;

[0028] Figure 4 for Figure 1Schematic diagram of the cross section at AA in the middle;

[0029] Figure 5 for Figure 4 A magnified view of part B in FIG.

[0030] Figure 6 for Figure 4 The enlarged view of the C part in FIG.

[0031] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the electrolytic cell device of the present application;

[0032] Figure 8 This is a schematic diagram of the structure of the electrode plate of the electrolytic cell device of the present application;

[0033] Fig. 9 This is a schematic diagram of the structure of the sealing ring of the electrolytic cell device of the present application;

[0034] Fig.10 for Fig. 9 Schematic diagram of the cross section at DD in the middle;

[0035] Fig.11 This is a schematic diagram of the structure of the support member of the electrolytic cell device of the present application;

[0036] Fig.12 This is a schematic diagram of the structure of the gasket of the electrolytic cell device of the present application;

[0037] Fig.13 This is a schematic diagram of the structure of the diaphragm of the electrolytic cell device of the present application.

[0038] Description of reference numerals:

[0039] 10. electrode plate; 101. groove; 102. protrusion;

[0040] 20. membrane electrode; 21. diaphragm; 22. carbon paper; 23. titanium felt;

[0041] 30. washer; 31. comb teeth; 311. through hole; 32. clamping hole; 33. clamping block;

[0042] 40. sealing ring; 41. first sealing part; 42. second sealing part; 421. elastic protrusion; 43. third sealing part; 431. receiving groove; 432. supporting member;

[0043] 50. Electrolysis chamber;

[0044] 60. Channel;

[0045] 70. Positioning hole. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0047] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0049] The technical solutions in the embodiments of the present application will be described in detail below in conjunction with the drawings in the embodiments of the present application.

[0050] like Figure 1 As shown, this embodiment provides an electrolytic cell device, which includes an electrode plate 10 and a membrane electrode 20. The membrane electrode 20 is located between the two electrode plates 10. A gasket 30 is also provided between the membrane electrode 20 and the electrode plate 10. The gasket 30 has a certain thickness. After the gasket 30 contacts the membrane electrode 20 and the electrode plate 10, the internal space of the electrode plate 10, the membrane electrode 20 and the gasket 30 enclose an electrolysis chamber 50.

[0051] The gaskets 30 of this embodiment are respectively laid on the two side surfaces of the membrane electrode 20 to form electrolysis chambers 50 on both sides of the membrane electrode 20, wherein the electrode plates 10 on both sides of the membrane electrode 20 are respectively an anode plate and a cathode plate, so that the electrolysis chamber 50 is divided into an anode chamber and a cathode chamber, and electrolyte is introduced into the anode chamber and the cathode chamber. After the anode plate and the cathode plate are energized, oxidation reaction and reduction reaction occur in the electrolysis chamber 50 respectively to produce the required gas.

[0052] like Figure 2 and Figure 3 As shown, in this embodiment, the gasket 30 and the membrane electrode 20 have approximately the same outer frame shape, so that the gasket 30 and the membrane electrode 20 can be nearly overlapped to form a layered structure, and the interior of the gasket 30 is hollowed out, and the hollowed-out portion corresponds to the middle working portion of the membrane electrode 20, which is used to form an electrolysis chamber 50.

[0053] This embodiment is also provided with a sealing ring 40, which can surround the gasket 30 and the outer frame of the membrane electrode 20, and can effectively fix and limit the gasket 30 and the membrane electrode 20. At the same time, the sealing ring 40 is clamped between the two electrode plates 10, and can effectively seal the electrolysis chamber 50.

[0054] like Figures 4 to 6 As shown, the embodiment of the present application has specially designed the structure of the sealing ring 40, and the sealing ring 40 has a first sealing portion 41 and a second sealing portion 42. The first sealing portion 41 is located at the inner ring portion of the sealing ring 40, and the first sealing portion 41 is clamped between the electrode plate 10 and the gasket 30, and is laid along the surface of the gasket 30 for a circle, so as to seal the periphery of the electrolysis chamber 50, thereby achieving the first layer sealing effect of the sealing ring 40.

[0055] The second sealing portion 42 of the present embodiment is sandwiched between two adjacent electrode plates 10, and the second sealing portion 42 extends from the first sealing portion 41 to the end of the gasket 30. The second sealing portion 42 can abut the gasket 30 from the side of the gasket 30. Thus, the first sealing portion 41 and the second sealing portion 42 contact the gasket 30 from two different directions respectively. When the first sealing portion 41 seals the electrolysis chamber 50, the second sealing portion 42 can seal the first sealing portion 41 again, and can also seal the gap between the gasket 30 and the membrane electrode 20, thereby further improving the sealing effect.

[0056] The second sealing portion 42 of the present embodiment can abut against the first sealing portion 41 and the gasket 30 when clamped by the two electrode plates 10, and can effectively support the first sealing portion 41, the gasket 30 and the membrane electrode 20 from the side to prevent lateral movement of the first sealing portion 41 and the gasket 30, and effectively prevent the high-pressure environment generated by the internal chemical reaction of the electrolytic cell device from affecting the internal structure, and can also prevent the electrolytic cell from being deformed due to its own gravity when arranged horizontally, thereby improving the internal structural strength and sealing of the electrolytic cell and enhancing the adaptability of the electrolytic cell to internal and external high-pressure environments.

[0057] like Fig. 9 and Fig.10 As shown, the sealing ring 40 of this embodiment is used to seal the anode cavity and the cathode cavity at the same time. Therefore, the inner ring of one sealing ring 40 has two first sealing parts 41 arranged opposite to each other, and the two first sealing parts 41 correspond to the anode cavity and the cathode cavity respectively. The second sealing part 42 of this embodiment is integrally formed with the first sealing part 41, and the second sealing part 42 is seamlessly connected to the two first sealing parts 41 on both sides of the gasket 30, and the second sealing part 42 is arranged outside the end of the gasket 30 to surround the gasket 30 and the membrane electrode 20.

[0058] See also Figure 5 , Fig. 9 and Fig.10 The two first sealing parts 41 and the second sealing part 42 form a groove with an opening toward the center of the sealing ring 40, and the two gaskets 30 clamp the membrane electrode 20, and their ends are just in the groove, that is, the two first sealing parts 41 and the second sealing parts 42 surround the periphery of the two gaskets 30, and the second sealing part 42 can seal the gap between the first sealing part 41 and the gasket 30, as well as the gap between the gasket 30 and the membrane electrode 20, further improving the sealing effect; and the second sealing part 42 surrounds the gasket 30 and the membrane electrode 20 from the circumferential direction under the clamping of the electrode plate 10, so that the structure of the gasket 30 and the membrane electrode 20 is more stable, which can well resist the pressure changes in the electrolysis chamber 50 and prevent the electrolytic cell from deformation.

[0059] In one embodiment, both sides of the second sealing portion 42 form a chimeric structure with the electrode plate 10, and the chimeric structures on both sides of the second sealing portion 42 are arranged in pairs. The paired chimeric structures can clamp the second sealing portion 42 under the clamping of the two electrode plates 10 to ensure the relative position of the second sealing portion 42 and the electrode plate 10, so that the second sealing portion 42 is not easy to deform and move, and can stably support the first sealing portion 41 and the gasket 30, providing a guarantee for the above-mentioned beneficial effects.

[0060] Specifically, Figure 5As shown, the interlocking structure includes a groove 101 formed on the surface of the electrode plate 10, and an elastic protrusion 421 formed on the surface of the second sealing portion 42. The second sealing portion 42 is clamped by two electrode plates 10, and the elastic protrusion 421 is interlocked in the groove 101. This can increase the pressure between the second sealing portion 42 and the electrode plate 10, which can not only seal the gap between the second sealing portion 42 and the electrode plate 10, but also effectively limit the second sealing portion 42 to prevent the second sealing portion 42 from moving relative to the electrode plate 10 due to external pressure or internal pressure, thereby further improving the connection strength of the sealing ring 40.

[0061] Furthermore, in one embodiment, the interlocking structure also includes a protrusion 102 formed on one side of the groove 101, the protrusion 102 protrudes in the direction of the second sealing portion 42, and the protrusion 102 protrudes from the surface of the electrode plate 10 facing the second sealing portion 42, that is, the protrusion 102 is higher than the surface of the electrode plate 10, so that when the electrode plate 10 clamps the sealing ring 40, the protrusions 102 relatively arranged on the two electrode plates 10 can further squeeze the second sealing portion 42, increase the pressure between the second sealing portion 42 and the electrode plate 10, and improve the limiting effect on the second sealing portion 42. At the same time, the protrusion 102 squeezes the elastic second sealing portion 42, so that the end of the protrusion 102 at least partially extends between two adjacent elastic protrusions 421, so that an interlaced layout is formed between the protrusion 102 and the elastic protrusion 421, and the protrusion 102 can play a role in resisting the elastic protrusion 421, effectively preventing the sealing ring 40 from being displaced relative to the electrode plate 10 along the plane where it is located.

[0062] like Figure 8 and Fig. 9 As shown, in one embodiment, a plurality of grooves 101 and protrusions 102 are provided, and each groove 101 and each protrusion 102 are respectively arranged around the surface of the electrode plate 10 to form a closed loop. Correspondingly, a plurality of elastic protrusions 421 are also provided, and each elastic protrusion 421 is arranged around the surface of the second sealing portion 42 to form a closed loop. In this way, the interlocking structure is arranged along the outside of the electrolysis chamber 50, which can strengthen the sealing of the four sides of the electrolysis chamber 50, and at the same time, the sealing ring 40 is limited in the circumferential direction, so that the sealing ring 40 is tightly connected to the electrode plate 10, thereby improving the structural strength of the electrolytic cell device and meeting the performance requirements of the electrolytic cell device under high pressure environment.

[0063] like Fig.12 and Fig.13As shown, the membrane electrode 20 of this embodiment can be a rectangular structure, the gasket 30 is a rectangular frame structure of corresponding size, the sealing ring 40 is also correspondingly configured as a rectangular frame structure to surround the gasket 30, and the electrode plate 10 is configured as a rectangle of the same size as the sealing ring 40, so that the sealing ring 40 can be clamped while being flush with the edge of the sealing ring 40, thereby ensuring the flatness of the electrolytic cell device and facilitating installation.

[0064] Of course, in some embodiments, the shapes of the membrane electrode 20, the gasket 30, the sealing ring 40 and the electrode plate 10 are not limited to rectangles, and may also be circular or other shapes, which are not limited here.

[0065] It is worth mentioning that since the surface of the electrode plate 10 of this embodiment is provided with a groove 101 and a protrusion 102, and the groove 101 and the protrusion 102 are arranged adjacent to each other, therefore, in one embodiment, Figure 8 As shown, the electrode plate 10 is preferably manufactured by a stamping process, in which one side surface of the electrode plate 10 is stamped to obtain a groove 101, and then a protrusion 102 is obtained by reverse stamping. This can greatly improve the manufacturing efficiency of the electrode plate 10, and the stamped electrode plate 10 can have a thinner thickness, which can reduce costs and reduce the weight of the electrolytic cell device.

[0066] In some embodiments, the electrode plate 10 may also be an etched plate, and the groove 101 and the protrusion 102 are made by etching technology. Compared with the stamped electrode plate 10, the etched plate has a certain thickness. Although the strength is increased, the advantage of reducing costs may not be sufficient.

[0067] like Figure 3 as well as Fig.12 and Fig.13 As shown, in one embodiment, the gasket 30 and the membrane electrode 20 are respectively provided with corresponding clamping holes 32. When the gasket 30 is laid on both sides of the membrane electrode 20, the clamping holes 32 of the two gaskets 30 and the membrane electrode 20 are completely aligned. The electrolyzer device is also provided with a clamping block 33. The shape of the clamping block 33 corresponds to the shape of the clamping hole 32. The clamping block 33 can be correspondingly clamped into the clamping holes 32 of the gasket 30 and the membrane electrode 20. The clamping block 33 is simultaneously clamped into the clamping holes 32 of the gasket 30 and the membrane electrode 20 to limit the membrane electrode 20 and the gasket 30.

[0068] Preferably, the clamping hole 32 and the clamping block 33 are in a rectangular shape, and the clamping hole 32 is arranged at the edge of the gasket 30 and the membrane electrode 20 to ensure that it can be completely covered by the sealing ring 40.

[0069] It should be noted that, in the direction of the block 33 along the stacking of the gasket 30 and the membrane electrode 20, the thickness of the block 33 should be at least greater than the thickness of the membrane electrode 20. Preferably, the thickness of the block 33 is the sum of the thickness of the two gaskets 30 plus the membrane electrode 20, so that when the block 33 is inserted into the card hole 32 of the gasket 30 and the membrane electrode 20, it is flush with the surface of the gasket 30, ensuring that the sealing ring 40 is in stable contact with the gasket 30 without affecting the sealing effect of the sealing ring 40.

[0070] As a further improvement, in one embodiment, the sealing ring 40 also has a third sealing portion 43, which is arranged outside the second sealing portion 42. On the basis of the two-layer sealing design realized by the first sealing portion 41 and the second sealing portion 42, the third sealing portion 43 realizes the third layer of sealing and strengthening design.

[0071] like Fig. 9 and Fig.10 As shown, the third sealing part 43 is seamlessly connected to the end of the second sealing part 42 and surrounds the second sealing part 42. The third sealing part 43 is located between every two adjacent electrode plates 10. A support member 432 is provided inside the third sealing part 43. The hardness of the support member 432 is greater than the hardness of the third sealing part 43. The support member 432 can increase the overall hardness of the third sealing part 43 and is not easy to deform. When a chemical reaction occurs inside the electrolysis chamber 50, the internal high-pressure environment squeezes the gasket 30 and the first sealing part 41 to cause the second sealing part 42 to deform outwardly. The support member 432 is located outside the second sealing part 42 and can play a role in supporting the second sealing part 42 to prevent the second sealing part 42 from deforming outwardly.

[0072] Specifically, Fig.10 and Fig.11 As shown, a receiving groove 431 is formed on the surface of the third sealing portion 43 away from the second sealing portion 42 . The receiving groove 431 is arranged around the third sealing portion 43 to form a closed loop. The support member 432 is arranged in the receiving groove 431 and surrounds the second sealing portion 42 .

[0073] The support member 432 is an annular member, which is sleeved on the outer periphery of the third sealing part 43 and is flush with the surface of the third sealing part 43. The annular closed structure of the support member 432 can firmly sleeve the third sealing part 43, and can play an inward resistance role on the second sealing part 42, effectively preventing the second sealing part 42 from deforming outward.

[0074] Preferably, the support member 432 may be a metal member or a hard plastic member.

[0075] In this embodiment, the sealing ring 40 is softer than the supporting member 432 and may be made of fluororubber. The first sealing portion 41 , the second sealing portion 42 and the third sealing portion 43 are integrally formed of the fluororubber material.

[0076] The harder support member 432 is located between two adjacent electrode plates 10. When the two electrode plates 10 are assembled, a clamping force is generated between the support member 432 and the electrode plates 10. This clamping force acts on the third sealing portion 43 therebetween, increasing the pressure of the third sealing portion 43 and providing stronger support for the second sealing portion 42, thereby preventing the second sealing portion 42 from deforming outward.

[0077] In this embodiment, the number of electrode plates 10 and sealing rings 40 in the electrolytic cell device is not limited, and there may be two or more electrode plates 10. When the electrolytic cell device uses two electrode plates 10, the two electrode plates 10 are respectively an anode plate and a cathode plate, and there is a sealing ring 40 mentioned in the above embodiment between the two electrode plates 10, and one sealing ring 40 surrounds two gaskets 30 and a membrane electrode 20, so that the assembly formed by the two electrode plates 10 can be used as a functional unit of the electrolytic cell device.

[0078] In some embodiments, in order to improve the water electrolysis efficiency, the electrolyzer device is formed by stacking a plurality of the above-mentioned functional units. Such an electrolyzer device has a plurality of electrode plates 10, and a sealing ring 40 is arranged between adjacent electrode plates 10. It is worth mentioning that the electrode plates 10 at both ends of the electrolyzer device are anode plates and cathode plates, and the electrode plate 10 in the middle position adopts a bipolar plate, one side of the bipolar plate is an anode, and an anode cavity is formed between the membrane electrode 20, and the other side is a cathode, and a cathode cavity is formed between the membrane electrode 20.

[0079] like Figure 2 As shown, in one embodiment, the electrolytic cell device has four electrode plates 10, and a sealing ring 40 is sandwiched between every two adjacent electrode plates 10, which is equivalent to the above-mentioned functional units of three layers. Both sides of each electrode plate 10 are provided with grooves 101.

[0080] like Figure 5 As shown, the grooves 101 on both sides of the same electrode plate 10 are arranged in a staggered manner, and the protrusions 102 on each side of the electrode plate 10 are the back of the grooves 101 on the other side. Similarly, the elastic protrusions 421 of the two sealing rings 40 on both sides of the same electrode plate 10 are arranged in a staggered manner. In this way, when multiple electrode plates 10 and multiple sealing rings 40 are stacked in sequence, the elastic protrusions 421 of adjacent sealing rings 40 are staggered, which can ensure that the sealing rings 40 are fully squeezed by the electrode plates 10, thereby improving the sealing effect of the sealing rings 40. At the same time, the elastic protrusions 421 of adjacent sealing rings 40 are arranged in a staggered manner, which is conducive to reducing the thickness of the sealing rings 40, and can make the electrode plates 10 set closer, further improving the thinness of the electrolytic cell functional unit, and improving the electrolysis efficiency.

[0081] See also Figure 1 and Figure 7 In this embodiment, a plurality of channels 60 are provided on the surface of the electrode plate 10 to serve as water channels and gas channels connecting the electrolysis chamber 50. Specifically, the channels 60 are provided in the area where the first sealing portion 41 is located, and the channels 60 run through the entire electrolytic cell device.

[0082] like Figure 7 and Fig.12 As shown, a plurality of comb teeth 31 are provided on the inner edge of the gasket 30 , the comb teeth 31 are at least partially located in the channel 60 , and one end of the comb teeth 31 extends into the electrolysis chamber 50 , and the gaps in the comb teeth 31 form a through hole 311 connecting the channel 60 and the electrolysis chamber 50 .

[0083] The channel 60 in this embodiment is arranged at both ends of the electrolysis chamber 50, and the channel 60 at one end of the electrolysis chamber 50 is used as a water channel, and the channel 60 at the other end of the electrolysis chamber 50 is used as a gas channel. Preferably, the through hole 311 connecting the water channel and the electrolysis chamber 50 is a water through hole, and the through hole 311 connecting the gas channel and the electrolysis chamber 50 is a gas through hole. The water through hole is used to guide the electrolyte flow between the water channel and the electrolysis chamber 50, such as introducing the electrolyte in the water channel into the anode cavity; the gas through hole is used to guide the air flow between the gas channel and the electrolysis chamber 50, such as introducing the hydrogen in the cathode cavity into the gas through hole, and then exporting this electrolyzer device to produce hydrogen.

[0084] The membrane electrode 20 of this embodiment includes a diaphragm 21 and a diffusion layer located on the surface of the diaphragm 21. The diffusion layer is correspondingly arranged in the electrolysis chamber 50. In one embodiment, the diffusion layer can be titanium felt 23 and / or carbon paper 22, or the titanium felt 23 and the carbon paper 22 are respectively arranged in the anode cavity or the cathode cavity. In one embodiment, the diffusion layer can also be foamed titanium. This embodiment does not make a sole limitation on the structure and material of the diffusion layer.

[0085] In this embodiment, in order to ensure that the electrolysis chamber 50 is not easily deformed and to ensure the sealing effect of the sealing ring 40, the gasket 30 is made of a harder material than the sealing ring 40. Preferably, the gasket 30 can be made of a PTFE sheet. In some embodiments, the material of the gasket 30 can be other hard plastics or rubber with a certain hardness, and the material of the gasket 30 is not limited in this embodiment.

[0086] like Figure 1 and Figure 2 As shown, the electrode plate 10 of this embodiment is also provided with positioning holes 70 on the edges thereof, and the positioning holes 70 sequentially penetrate the electrode plate 10, the sealing ring 40, the gasket 30 and the diaphragm 21. The positioning holes 70 are used to position the electrode plate 10, the sealing ring 40, the gasket 30 and the diaphragm 21 when they are sequentially stacked and installed, thereby improving assembly efficiency.

[0087] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0088] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0089] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrolytic cell device, characterized in that: include: At least two electrode plates (10) arranged opposite to each other; A membrane electrode (20) is located between every two adjacent electrode plates (10); Gaskets (30) are respectively laid on the two side surfaces of the membrane electrode (20), and each of the gaskets (30), the membrane electrode (20) and the electrode plate (10) form an electrolysis chamber (50); A sealing ring (40) is located between every two adjacent electrode plates (10), and the sealing ring (40) includes a first sealing portion (41) and a second sealing portion (42), wherein the first sealing portion (41) is clamped between the electrode plate (10) and the gasket (30) to seal the electrolysis chamber (50), and the second sealing portion (42) extends from the first sealing portion (41) to the end of the gasket (30) to abut against the gasket (30).

2. The electrolytic cell device according to claim 1, characterized in that: The second sealing portion (42) is seamlessly connected to the two first sealing portions (41) on both sides of the gasket (30), and is arranged around the outer side of the end of the gasket (30) to surround the gasket (30) and the membrane electrode (20). The second sealing portion (42) is used to seal the gap between the first sealing portion (41) and the gasket (30), and the gap between the gasket (30) and the membrane electrode (20).

3. The electrolytic cell device according to claim 2, characterized in that: Both sides of the second sealing portion (42) respectively form a chimeric structure with the electrode plate (10), and the chimeric structures on both sides of the second sealing portion (42) are arranged in pairs.

4. The electrolytic cell device according to claim 3, characterized in that: The interlocking structure comprises a groove (101) formed on the surface of the electrode plate (10), and an elastic protrusion (421) formed on the surface of the second sealing portion (42); the elastic protrusion (421) is interlocked in the groove (101) to seal the gap between the second sealing portion (42) and the electrode plate (10), and is capable of limiting the position of the second sealing portion (42).

5. The electrolytic cell device according to claim 4, characterized in that: The interlocking structure further comprises a protrusion (102) formed on one side of the groove (101), wherein the protrusion (102) protrudes from a surface of the electrode plate (10) facing the second sealing portion (42) to limit the position of the elastic protrusion (421).

6. The electrolytic cell device according to claim 5, characterized in that: A plurality of the grooves (101) and the protrusions (102) are provided, and each of the grooves (101) and each of the protrusions (102) are arranged around the surface of the electrode plate (10) to form a closed loop; A plurality of the elastic protrusions (421) are provided corresponding to the grooves (101), and each of the elastic protrusions (421) is arranged around the surface of the second sealing portion (42) to form a closed loop.

7. The electrolytic cell device according to claim 6, characterized in that: The electrolytic cell device comprises at least three electrode plates (10) and at least two sealing rings (40), the grooves (101) located on both sides of the same electrode plate (10) are arranged alternately, the protrusions (102) are formed on the back side of each groove (101), and the elastic protrusions (421) of the sealing rings (40) located on both sides of the same electrode plate (10) are arranged alternately.

8. The electrolytic cell device according to any one of claims 1 to 7, characterized in that: The sealing ring (40) further comprises a third sealing portion (43), wherein the third sealing portion (43) is seamlessly connected to the end of the second sealing portion (42) and surrounds the second sealing portion (42), the third sealing portion (43) is located between every two adjacent electrode plates (10), and a support member (432) is provided inside the third sealing portion (43), and the hardness of the support member (432) is greater than the hardness of the third sealing portion (43).

9. The electrolytic cell device according to claim 8, characterized in that: A receiving groove (431) is provided on the surface of the third sealing portion (43) away from the second sealing portion (42); the receiving groove (431) is arranged around the third sealing portion (43) to form a closed loop; the support member (432) is arranged in the receiving groove (431) and surrounds the second sealing portion (42).

10. The electrolytic cell device according to any one of claims 1 to 7, characterized in that: The gasket (30) and the membrane electrode (20) are respectively provided with corresponding clamping holes (32); The electrolytic cell device also includes a clamping block (33), which can be correspondingly clamped into the clamping holes (32) of the gasket (30) and the membrane electrode (20) to limit the position of the membrane electrode (20) and the gasket (30).

11. The electrolytic cell device according to any one of claims 1 to 7, characterized in that: The region of the first sealing portion (41) is provided with a channel (60) penetrating the electrolytic cell device, and the gasket (30) is provided with a through hole (311) connecting the channel (60) and the electrolysis chamber (50); wherein the channel (60) includes a water channel and a gas channel, and the through hole (311) includes a water channel through hole and a gas channel through hole; The electrolysis chamber (50) is connected to the water channel through the water channel through holes, and is connected to the gas channel through the gas channel through holes.

12. The electrolytic cell device according to any one of claims 1 to 7, characterized in that: The membrane electrode (20) comprises a diaphragm (21) and a diffusion layer located on the surface of the diaphragm (21); the diffusion layer is located in the electrolysis chamber (50); the diffusion layer comprises titanium felt (23) and / or carbon paper (22).

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