An electrolytic cell component

Abstract

The present invention relates to the technical field of electrolytic hydrogen production, and discloses an electrolytic cell assembly with good sealing effect, comprising: a frame (corresponding to 101 and 102), formed as a hollow structure, at least one set of annular ribs are provided on the end face of the frame (corresponding to 101 and 102), and symmetrical grooves are arranged on the inner side of the middle section of the frame (corresponding to 101 and 102).

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic hydrogen production, and more specifically, to an electrolytic cell assembly. Background Art

[0002] At present, the metal electrode frames of water electrolysis hydrogen production electrolytic cells have problems such as high manufacturing costs and easy erosion and damage. Since the electrode frames used in electrolytic cells are usually monolithic nickel-plated metal plates, the processing cost of nickel-plated metal electrode frames is relatively high, which restricts the popularization of water electrolysis hydrogen production.

[0003] Therefore, in the prior art, PPUS materials are used to make the frames of electrolytic cells, which can effectively reduce the processing cost of making the frames. However, for the frames made of existing PPUS materials, due to process or design reasons, the sealing effect of the frames is relatively poor. During the process of stacked use, the sealing performance cannot meet the expectations, resulting in water seepage on the outer extension of the electrolytic cell. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an electrolytic cell assembly with a better sealing effect in view of the above-mentioned defect that the sealing effect of the existing frame is relatively poor, and during the process of stacked use, the sealing performance cannot meet the expectations, resulting in water seepage on the outer extension of the electrolytic cell.

[0005] The technical solution adopted by the present invention to solve its technical problems is: to construct an electrolytic cell assembly, comprising:

[0006] A frame, formed as a hollow structure, and at least a set of annular ribs are provided on the end face of the frame.

[0007] Symmetrical grooves are provided on the inner side of the middle section of the frame.

[0008] In some embodiments, the grooves communicate with the hollow structure to form a water flow field or a gas flow field within the frame.

[0009] In some embodiments, through holes are provided on the middle section of the frame, and the through holes communicate with the grooves.

[0010] In some embodiments, a convex ring is provided on the outer extension of the through holes.

[0011] In some embodiments, a lip protruding outward is provided on the inner edge of the frame.

[0012] In some embodiments, a reaction chamber is formed between the stacked frames, and a proton exchange membrane is radially arranged in the reaction chamber for proton exchange.

[0013] In some embodiments, at least one titanium mesh and one felt cloth are respectively provided on both end face sides of the proton exchange membrane.

[0014] In some embodiments, the titanium mesh and the felt are laminated to form a current collector layer of the anode or the cathode.

[0015] In some embodiments, the thickness of the titanium mesh is greater than or equal to the thickness of the felt.

[0016] In the electrolytic cell assembly of the present invention, it includes a frame formed into a hollow structure, and at least one set of annular ribs is provided on the end face of the frame, and symmetrical grooves are provided on the inner side of the middle section of the frame. Compared with the prior art, by providing at least one set of annular ribs on the end face of the frame, when laminating, the sealing member is extruded by the ribs of the frame, thereby improving the sealing performance between the laminated frames, so as to avoid the problem of water seepage on the outer extension of the electrolytic cell due to poor sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0018] Figure 1 is a perspective view of an embodiment of the electrolytic cell assembly provided by the present invention;

[0019] Figure 2 is an exploded view of an embodiment of the electrolytic cell assembly provided by the present invention;

[0020] Figure 3 is a perspective view of an embodiment of the frame provided by the present invention;

[0021] Figure 4 is a perspective view of another embodiment of the frame provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to have a clearer understanding of the technical features, objectives, and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the drawings.

[0023] As Figures 1-4 shown, in the first embodiment of the electrolytic cell assembly of the present invention, the electrolytic cell assembly 10 includes at least two frames (corresponding to 101 and 102), sealing members (corresponding to 103 and 105), and a proton exchange membrane 104.

[0024] Specifically, the frames (corresponding to 101 and 102) are formed into a hollow structure (corresponding to 101a and 102a), which is formed into a square or circular structure and made of PPUS material.

[0025] Furthermore, at least one set of annular ribs (corresponding to 101d, 101e, 102d, and 102e) is provided on the end faces of the frames (corresponding to 101 and 102).

[0026] Specifically, the frames (corresponding to 101 and 102) include a first frame 101 and a second frame 102. Among them, on the end face of the first frame 101, there are at least convex ribs (corresponding to 101d and 101e). The first convex rib 101d is arranged on the inner edge of the first frame 101, and the second convex rib 101e is arranged on the outer edge of the first frame 101.

[0027] On the end face of the second frame 102, there are at least convex ribs (corresponding to 102d and 102e). The third convex rib 101d is arranged on the inner edge of the second frame 102, and the fourth convex rib 102e is arranged on the outer edge of the second frame 102.

[0028] Furthermore, symmetric grooves (corresponding to 101b, 101c, 102b, and 102c) are arranged on the inner side of one side of the middle sections of the first frame 101 and the second frame 102.

[0029] Specifically, symmetric first grooves 101b and second grooves 101c are arranged on the first frame 101, and symmetric third grooves 102b and fourth grooves 102c are arranged on the second frame 102.

[0030] During electrolysis, the input purified water enters from the first groove 101b, enters a reaction frame 100a, electrolyzes to generate ionic hydrogen and oxygen. The ionic hydrogen is exchanged through the proton exchange membrane 104 to another reaction frame 100b, and the electrolyzed purified water flows out from the second groove 101c.

[0031] At this time, hydrogen gas is formed from the ionic hydrogen in another reaction frame 100b and then output through the third groove 102b and the fourth groove 102c.

[0032] During lamination, the first frame 101, the sealing components (corresponding to 103 and 105), the proton exchange membrane 104, and the second frame 102 are laminated in sequence. End plates (not shown) are arranged on both sides of the first frame 101 and the second frame 102, and then a screwing torque is applied to the first frame 101, the sealing components (corresponding to 103 and 105), the proton exchange membrane 104, and the second frame 102 through a screw, so that the convex ribs (corresponding to 101d, 101e, 102d, and 102e) on the first frame 101 and the second frame 102 squeeze the sealing components (corresponding to 103 and 105), thereby ensuring the sealing of the lamination components when they are in contact.

[0033] Using this technical solution, by providing at least one set of annular convex ribs (corresponding to 101d, 101e, 102d, and 102e) on the end faces of the frames (corresponding to 101 and 102), during lamination, the convex ribs (corresponding to 101d, 101e, 102d, and 102e) of the frames (corresponding to 101 and 102) squeeze the sealing components (corresponding to 103 and 105), thereby improving the sealing performance between the laminated frames (corresponding to 101 and 102), and effectively solving the problem of water seepage on the outer extension of the electrolytic cell caused by poor sealing performance.

[0034] In some embodiments, to ensure the performance of electrolysis, the grooves (corresponding to 101b, 101c, 102b, and 102c) can be connected to the hollow structures (corresponding to 101a and 102a) to form a water flow field or a gas flow field in the reaction chambers (100a and 100b) of the frames (corresponding to 101 and 102).

[0035] Specifically, the pure water introduced enters the first reaction chamber 100a through the first groove 101b, and a water flow field is formed in the first reaction chamber 100a on one side of the first frame 101. The electrolyzed pure water flows out through the second groove 101c to improve the effect of water circulation;

[0036] The electrolyzed hydrogen ions are exchanged through the proton exchange membrane 104 into another reaction chamber 100b (for the second frame 102) to form a gas flow field, and the hydrogen gas is output through the third groove 102b and the fourth groove 102c.

[0037] In some embodiments, to ensure the smoothness of the gas path and the water path, through holes (corresponding to 110a, 110b, 120a, and 120b) can be provided in the middle sections of the frames (corresponding to 101 and 102).

[0038] Among them, the through holes (corresponding to 110a and 110b) on the first frame 101 are water through holes, which are respectively set as the first through hole (corresponding to 110a) and the second through hole (corresponding to 110b).

[0039] The through holes (corresponding to 120a and 120b) on the second frame 102 are gas through holes, which are respectively set as the third through hole (corresponding to 120a) and the fourth through hole (corresponding to 120b).

[0040] Specifically, the first through hole (corresponding to 110a) is connected to the groove (corresponding to 101b);

[0041] The second through hole (corresponding to 110c) is connected to the groove (corresponding to 101c);

[0042] The third through hole (corresponding to 120b) is connected to the groove (corresponding to 102b);

[0043] The fourth through hole (corresponding to 120c) communicates with the groove (corresponding to 102c).

[0044] In some embodiments, in order to improve the tightness of the fit between the through holes (corresponding to 110a, 110b, 120a and 120b) and the sealing members (corresponding to 103 and 105), convex rings (corresponding to 101f and 102f) can be provided on the outer extensions of the through holes (corresponding to 110a, 110b, 120a and 120b).

[0045] Among them, positioning holes (corresponding to 130a and 130b) are also provided on the adjacent sides of the through holes (corresponding to 110a, 110b, 120a and 120b), and convex rings (not shown) are also correspondingly provided in the positioning holes (corresponding to 130a and 130b).

[0046] In some embodiments, in order to improve the service life of the proton exchange membrane 104, a lip (not shown) protruding outward can be provided on the inner edge of the frame (corresponding to 101 and 102).

[0047] By providing the outwardly protruding lip (not shown), the axial shear force between the proton exchange membrane 104 and the inner edge of the frame (corresponding to 101 and 102) can be dispersed, thereby improving the service life of the proton exchange membrane 104.

[0048] In some embodiments, in order to improve the stability of electrolysis, at least one titanium mesh (not shown) and one felt cloth (not shown) can be respectively provided on the two end face sides of the proton exchange membrane 104.

[0049] Among them, the titanium mesh (not shown) is used to convey pure still water, and the felt cloth (not shown) is used to protect the proton exchange membrane 104.

[0050] Furthermore, the titanium mesh (not shown) and the felt cloth (not shown) are laminated to form a current collecting layer of the anode or the cathode.

[0051] The thickness of the titanium mesh (not shown) is greater than or equal to the thickness of the felt cloth (not shown).

[0052] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the present invention and the claims. These all fall within the protection scope of the present invention.

Claims

1. An electrolytic cell assembly, characterized in that, Comprising: A frame, formed as a hollow structure, with at least one set of annular ribs provided on the end face of the frame, and symmetric grooves provided on the inner side of the middle section of the frame; The grooves communicate with the hollow structure, forming a water flow field or a gas flow field within the frame; Through holes are provided on the middle section of the frame, and the through holes communicate with the grooves; A lip is provided on the inner edge of the frame, and by providing the outwardly protruding lip, the axial shear force between the proton exchange membrane and the inner edge of the frame can be dispersed; A reaction chamber is formed between the stacked frames, and a proton exchange membrane is radially provided in the reaction chamber for proton exchange; The frame includes a first frame and a second frame. Symmetric grooves are provided on the inner side of one side of the middle sections of the first frame and the second frame. Symmetric first grooves and second grooves are provided on the first frame, and symmetric third grooves and fourth grooves are provided on the second frame; The introduced pure water enters a reaction chamber through the first groove, and a water flow field is formed in a reaction chamber on one side of the first frame. The electrolyzed pure water flows out through the second groove; The electrolyzed hydrogen ions are exchanged through the proton exchange membrane to another reaction chamber, forming a gas flow field, and the hydrogen gas is output through the third groove and the fourth groove; At least ribs are provided on the end face of the first frame. The first rib is provided on the inner edge of the first frame, and the second rib is provided on the outer edge of the first frame. At least ribs are provided on the end face of the second frame. The third rib is provided on the inner edge of the second frame, and the fourth rib is provided on the outer edge of the second frame, During lamination, the first frame, the sealing component, the proton exchange membrane, and the second frame are sequentially laminated. End plates are provided on both sides of the first frame and the second frame, and then a screwing torque is applied to the first frame, the sealing component, the proton exchange membrane, and the second frame through a screw rod, so that the ribs on the first frame and the second frame form extrusion on the sealing component.

2. The electrolytic cell assembly according to claim 1, wherein A convex ring is provided on the outer extension of the through hole.

3. The electrolytic cell assembly according to claim 2, wherein At least one titanium mesh and one felt cloth are respectively provided on both end face sides of the proton exchange membrane.

4. The electrolytic cell assembly according to claim 3, characterized in that, The titanium mesh and the felt cloth are laminated to form a current collecting layer of the anode or the cathode.

5. The electrolytic cell assembly according to claim 4, characterized in that, The thickness of the titanium mesh is greater than or equal to the thickness of the felt cloth.

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