Electrode device

Abstract

The utility model provides an electrode device which comprises two outer pole pieces with the same polarity and an inner pole piece with the polarity opposite to that of the outer pole pieces, the two outer pole pieces are of a sheet-shaped structure, the relatively large end faces of the two outer pole pieces are oppositely arranged in parallel, and the inner pole piece is arranged between the two outer pole pieces. Wherein a connecting piece is arranged between the two outer pole pieces, the two ends of the connecting piece are connected with the two outer pole pieces respectively, and by arranging the two outer pole pieces which are connected with each other and have the same polarity and the inner pole piece with the opposite polarity to the outer pole pieces, different requirements of users for hydrogen and oxygen can be met; compared with a single negative electrode, the electrode device provided by the utility model is longer in service life, stronger in practicability and more convenient to assemble, and the hydrogen generation amount and the electrolysis efficiency can be greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of water electrolysis for hydrogen production technology, and specifically relates to an electrode device. Background Technology

[0002] In actual production, hydrogen, as an important chemical substance and energy carrier, plays a vital role in various fields such as industry, energy, medicine, and environmental protection. Electrolysis of water to produce hydrogen is a common technique. Its principle involves conducting electricity between the negative and positive electrodes. A reduction reaction occurs at the negative electrode to produce hydrogen (H2), with hydrogen ions moving towards the negative electrode and hydroxide ions moving towards the positive electrode. Hydrogen ions gain electrons at the negative electrode to become hydrogen gas, while hydroxide ions lose electrons at the positive electrode to produce oxygen and water. The hydrogen ions in the newly generated water then move back to the negative electrode, thus connecting to an external power source to form a circuit. This method is technically mature and low-cost. However, existing electrode devices suffer from low electrolysis efficiency, limited current density leading to a short lifespan, and are inconvenient for maintenance and electrode replacement, with complex assembly. Utility Model Content

[0003] (1) Technical problems to be solved

[0004] This invention provides an electrode device that aims to solve the problems of low electrolysis efficiency, inconvenient electrode assembly, and short service life in the prior art.

[0005] (2) Technical solution

[0006] This utility model provides an electrode device, including two outer electrodes with the same polarity and an inner electrode with the opposite polarity to the outer electrodes. The two outer electrodes have a sheet-like structure and their relatively larger end faces are arranged parallel to each other. The inner electrode is disposed between the two outer electrodes.

[0007] Furthermore, a gap is provided between the outer electrode and the inner electrode, the distance L1 of the gap is less than 2.5mm, and the distance between the inner electrode and the two outer electrodes is the same.

[0008] Furthermore, an insulator is provided within the gap to isolate the outer electrode from the inner electrode.

[0009] Furthermore, a connector is provided between the two outer electrode plates, and the two ends of the connector are respectively connected to the two outer electrode plates.

[0010] Furthermore, at least one of the outer electrode plates has an outer connecting portion and a notch one arranged in parallel at one end, and the inner electrode plate has an inner connecting portion and a notch two arranged in parallel at one end. During assembly, the outer connecting portion and the inner connecting portion are arranged on both sides of the central axis L2 of the electrode device.

[0011] Furthermore, the outer connecting part is provided with an outer U-shaped groove, and the inner connecting part is provided with an inner U-shaped groove.

[0012] Furthermore, it also includes a frame, which is sleeved on one end of the outer electrode and the inner electrode, and the insulator is disposed within the frame.

[0013] Furthermore, the frame body is provided with wires that are electrically connected to the outer electrode and the inner electrode, respectively, having the same polarity.

[0014] Furthermore, both the outer electrode and the inner electrode have a flat, sheet-like structure.

[0015] Furthermore, the outer electrode has a C-shaped arc-shaped sheet structure with an opening, and the openings of the two outer electrodes are arranged opposite to each other, while the inner electrode has a columnar structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The device is equipped with two interconnected outer electrodes of the same polarity and an inner electrode of opposite polarity, which can meet the different needs of users for hydrogen and oxygen. When the outer electrode is the negative electrode, it can greatly improve the hydrogen production and electrolysis efficiency. Compared with a single negative electrode, the electrode device of this invention has a longer service life, is more practical, and is easier to assemble. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a diagram showing the effect of assembling the outer electrode and inner electrode of this utility model.

[0020] Figure 3 This is a partial cross-sectional view of the assembly of the electrode and the frame of this utility model.

[0021] Figure 4 This is a schematic diagram of the connecting component structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the outer electrode and the inner electrode of this utility model.

[0023] Figure 6 This is a schematic diagram of the electrode sheet and frame of this utility model.

[0024] Figure 7 This is a schematic diagram of the groove structure inside the frame of this utility model.

[0025] Figure 8 This is a schematic diagram of an embodiment of the electrode of this utility model.

[0026] Reference numerals: 1-Outer electrode, 11-Connector, 12-Outer connecting part, 121-Outer U-shaped groove, 13-Notch 1, 2-Inner electrode, 21-Inner connecting part, 211-Inner U-shaped groove, 22-Notch 2, 3-Gap, 4-Insulator, 5-Frame, 6-Wire, 7-Opening. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] like Figure 1-2 As shown, this utility model provides an electrode device, including two outer electrode plates 1 with the same polarity and an inner electrode plate 2 with the opposite polarity to the outer electrode plates 1. The two outer electrode plates 1 have a sheet-like structure and their relatively larger end faces are arranged parallel to each other. The inner electrode plate 2 is disposed between the two outer electrode plates 1. When the outer electrode plate 1 is a positive or negative electrode, the inner electrode plate 2 is a negative or positive electrode. Since the two outer electrode plates 1 have a sheet-like structure, two corresponding larger end faces and two smaller side end faces are provided on the upper and lower end faces of the outer electrode plates 1, wherein the two relatively larger end faces are arranged parallel to each other. The inner electrode plate 2 is disposed between the two outer electrode plates 1 and is arranged parallel to them. According to the principle of hydrogen production by water electrolysis, after the outer electrode plate 1 and the inner electrode plate 2 are placed in a container containing an aqueous solution and become conductive, oxygen is generated at the positive electrode and hydrogen is generated at the negative electrode, wherein the volume ratio of hydrogen to oxygen is approximately 2:1. To improve the efficiency of hydrogen production through water electrolysis, the area of ​​the negative electrode is usually increased. Therefore, in this invention, the two outer electrode plates 1 are set as negative electrodes, and the inner electrode plate 2 is set as positive electrodes. Compared with the traditional method where the number or area of ​​the outer electrode plates 1 and the inner electrode plates 2 are equal, the electrode device of this invention can greatly improve the amount of hydrogen generated and the electrolysis efficiency. Furthermore, by setting two negative electrodes, the current is distributed between the two negative electrodes, thereby reducing the current density of each negative electrode. This helps to reduce the risk of electrode overheating and corrosion, thus improving the durability of the electrode. This configuration is superior to that of a single negative electrode, resulting in a longer service life and greater practicality.

[0029] Specifically, in order to make the electrolysis effect better and more stable, in another embodiment, the inner electrode 2 is equidistant from the two outer electrode 1s, that is, the inner electrode 2 is positioned in the middle of the two outer electrode 1s, so that the distances S1 and S2 from the upper and lower end faces of the inner electrode 2 to the two outer electrode 1s are equal.

[0030] Furthermore, such as Figure 3As shown, since the outer electrode 1 and the inner electrode 2 do not contact each other, a gap 3 is provided between them. The distance L1 of the gap 3 is less than 2.5 mm, and an insulator 4 is provided within the gap 3 to isolate the outer electrode 1 and the inner electrode 2. This prevents a short circuit between the outer electrode 1 and the inner electrode 2, which would cause a large amount of current to flow directly from the positive electrode to the negative electrode without passing through the electrolyte solution, resulting in a significant reduction in electrolysis efficiency. This would prevent the effective decomposition of water to produce hydrogen and oxygen, or damage the entire electrode device, affecting the service life and safety of the equipment. The distance L1 of the gap 3 being less than 2.5 mm avoids excessively large spacing between the electrodes, which would lengthen the gas exhaust path, increase the distance ions migrate, and increase resistance, leading to a slower electrolysis reaction rate and reduced electrolysis efficiency. Furthermore, maintaining the same electrolysis rate might require a higher voltage, increasing energy consumption.

[0031] Furthermore, such as Figure 4 As shown, a connector 11 is provided between the two outer electrode plates 1. The connector 11 has a "C"-shaped structure and an opening structure on the side near the central axis L2 of the electrode device. Both ends of the connector 11 are connected to the two outer electrode plates 1 respectively. It should be noted that the outer electrode plates 1 and the inner electrode plates 2 are usually assembled by inserting them from front to back. Therefore, the opening structure of the connector 11 facilitates the disassembly and assembly of the electrode plates, making replacement and maintenance more convenient. Furthermore, the connector 11 is made of a conductive material such as metal. In this invention, the connector 11 is made of the same metal material as the two outer electrode plates 1, which can make the current more stable and also makes production and processing more convenient and efficient.

[0032] Furthermore, such as Figure 5 As shown, at least one end of the outer electrode 1 is provided with an external connecting portion 12 and a notch 13 arranged in parallel, and one end of the inner electrode 2 is provided with an internal connecting portion 21 and a notch 22 arranged in parallel. During assembly, the external connecting portion 12 and the internal connecting portion 21 are arranged on both sides of the central axis L2 of the electrode device. That is to say, after assembly, the external connecting portion 12 and the internal connecting portion 21 are located on both sides of the electrode device, the notch 13 forms a clearance for the internal connecting portion 21, and the notch 22 forms a clearance for the external connecting portion 12, making the overall structural layout of the electrode device more reasonable.

[0033] Preferably, the outer connecting part 12 is provided with an outer U-shaped groove 121, and the inner connecting part 21 is provided with an inner U-shaped groove 211. The U-shaped openings of the outer U-shaped groove 121 and the inner U-shaped groove 211 face in the same direction as the opening structure of the connector 11, facilitating the assembly of the inner electrode 2 through the U-shaped opening and the opening structure of the connector 11 into the two outer electrode 1s. The outer U-shaped groove 121 and the inner U-shaped groove 211 are primarily used to connect wires for conducting electricity to the electrodes.

[0034] Furthermore, such as Figure 6 , Figure 7 As shown, this utility model also includes a frame 5, which has a groove inside that matches the shape of the outer electrode 1 and the inner electrode 2. The electrodes and the frame 5 are detachable. During assembly, the outer electrode 1 is first inserted into the corresponding groove, and the inner electrode 2 is then inserted into the corresponding groove and positioned between the two outer electrodes 1. Most of the area of ​​the outer electrode 1 and the inner electrode 2 extends from the groove to the outside of the frame 5 for contact with the electrolyte solution. The insulator 4 is disposed inside the frame 5, which can form an isolation between the positive and negative electrodes without affecting the contact area between the electrodes and the electrolyte solution.

[0035] Specifically, the entire frame 5 is made of insulating material. When the outer electrode 1 and the inner electrode 2 are inserted into their respective slots, they cannot be electrically connected through the frame 5. Furthermore, the frame 5 is fitted over one end of the outer electrode 1 and the inner electrode 2. When the outer electrode 1 and the inner electrode 2 are located within the frame 5, the outer connecting portion 12 of the outer electrode 1 and the inner connecting portion 21 of the inner electrode 2 are not visible from the side of the frame 5. Alternatively, an insulating top cover (not shown in the attached diagram) can be provided on the frame 5. When the outer electrode 1 and the inner electrode 2 are inserted into the frame 5, the top cover covers the slot opening, preventing external contact with the electrodes and enhancing safety.

[0036] Furthermore, the frame 5 is provided with wires 6 that are electrically connected to the outer electrode 1 and the inner electrode 2 with the same polarity. One end of each wire 6 is connected to the outer U-shaped groove 121 of the outer electrode 1 and the inner U-shaped groove 211 of the inner electrode 2, and the other end is connected to a power source to conduct electricity to the electrodes and realize the electrolysis of water reaction. Therefore, the outer connecting part 12 and the inner connecting part 21 are arranged on both sides of the central axis L2 of the electrode device, so that after the wires 6 are connected to them respectively, the wires 6 are located on both sides of the electrode device, which can avoid the two from contacting each other and causing a short circuit. When the outer electrode 1 is the positive electrode, the wire 6 connected to the outer U-shaped groove 121 of the outer electrode 1 is also the positive electrode. At this time, the inner electrode 2 is the negative electrode, and the wire 6 connected to the inner U-shaped groove 211 of the inner electrode 2 is the negative electrode, and vice versa. This will not be elaborated further here.

[0037] Furthermore, in one embodiment, both the outer electrode 1 and the inner electrode 2 are flat sheet structures, wherein the larger end faces of the outer electrode 1 and the inner electrode 2 are arranged parallel to each other.

[0038] like Figure 8 As shown, in another embodiment, the outer electrode 1 has a C-shaped arc-shaped sheet structure and forms an opening 7. The openings 7 of the two outer electrode 1 are arranged opposite each other, so that a circle with an opening 7 is formed between the two outer electrode 1. The inner electrode 2 has a columnar structure, and the shortest distance from any point on the arc-shaped end face of the outer electrode 1 to the columnar peripheral wall of the inner electrode 2 is equal, denoted as S1. The shortest distance from any point on the arc-shaped end face of the other outer electrode 1 to the columnar peripheral wall of the inner electrode 2 is also equal, denoted as S2. Wherein, S1 = S2, that is, the inner electrode 2 is located in the middle of the two outer electrode 1.

[0039] The working principle of this utility model is explained in detail below:

[0040] In use, the inner electrode 2 is located between the two outer electrodes 1 with a gap 3 between them. One end of the outer electrode 1 and the inner electrode 2 is in contact with the electrolytic solution, and the other end is isolated by an insulator 4. The wire 6 is connected to the outer U-shaped groove 121 of the outer electrode 1 and the inner U-shaped groove 211 of the inner electrode 2, respectively. After conduction, the current is transmitted to the outer electrode 1 and the inner electrode 2 through the wire 6, and hydrogen and oxygen are generated in the electrolytic solution (usually water) to form a circuit. Since the area of ​​the outer electrode 1 is twice the area of ​​the inner electrode 2, when the outer electrode 1 is the negative electrode, the electrolysis efficiency and the amount of hydrogen generated can be greatly improved during the electrolysis process.

[0041] The innovation of this utility model lies in the setting of two interconnected outer electrodes with the same polarity and an inner electrode with the opposite polarity to the outer electrodes. This can meet the different needs of users for hydrogen and oxygen. When the outer electrode is the negative electrode, it can greatly improve the amount of hydrogen generated and the electrolysis efficiency. Compared with a single negative electrode, the electrode device of this utility model has a longer service life, is more practical, and is more convenient to assemble.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An electrode device, characterized in that, It includes two outer electrode plates (1) with the same polarity and an inner electrode plate (2) with the opposite polarity to the outer electrode plates (1). The two outer electrode plates (1) are in the form of a sheet and their relatively large end faces are arranged in parallel. The inner electrode plate (2) is arranged between the two outer electrode plates (1).

2. The electrode device according to claim 1, characterized in that, A gap (3) is provided between the outer electrode (1) and the inner electrode (2), the distance L1 of the gap (3) is less than 2.5 mm, and the distance between the inner electrode (2) and the two outer electrodes (1) is the same.

3. The electrode device according to claim 2, characterized in that, The gap (3) is provided with an insulator (4) that isolates the outer electrode (1) from the inner electrode (2).

4. The electrode device according to claim 3, characterized in that, A connector (11) is provided between the two outer electrode plates (1), and the two ends of the connector (11) are respectively connected to the two outer electrode plates (1).

5. The electrode device according to claim 1, characterized in that, At least one of the outer electrode plates (1) has an outer connecting portion (12) and a notch one (13) arranged in parallel at one end, and an inner electrode plate (2) has an inner connecting portion (21) and a notch two (22) arranged in parallel at one end. During assembly, the outer connecting portion (12) and the inner connecting portion (21) are arranged on both sides of the central axis L2 of the electrode device.

6. The electrode device according to claim 5, characterized in that, The outer connecting part (12) is provided with an outer U-shaped groove (121), and the inner connecting part (21) is provided with an inner U-shaped groove (211).

7. The electrode device according to claim 3, characterized in that, It also includes a frame (5), which is sleeved on one end of the outer electrode (1) and the inner electrode (2), and the insulator (4) is disposed inside the frame (5).

8. The electrode device according to claim 7, characterized in that, The frame (5) is provided with wires (6) that are electrically connected to the outer electrode (1) and the inner electrode (2) respectively.

9. The electrode device according to claim 1, characterized in that, Both the outer electrode (1) and the inner electrode (2) have a flat, sheet-like structure.

10. The electrode device according to claim 1, characterized in that, The outer electrode (1) has a "C"-shaped arc-shaped sheet structure and forms an opening (7). The openings (7) of the two outer electrode sheets (1) are arranged opposite to each other. The inner electrode sheet (2) has a columnar structure.

Images