Electrode structure capable of improving electrolysis efficiency

Abstract

The utility model discloses an electrode structure capable of improving electrolytic efficiency, which comprises an electrode frame, an anode and a cathode, a first pole plate is slidably arranged on one side of the anode far away from the cathode in the electrode frame, and a second pole plate is slidably arranged on one side of the cathode far away from the anode in the electrode frame; turbulent flow protrusions are arranged on the surfaces of the anode and the cathode in an array mode, one side of the first polar plate is in multi-point contact with the anode, one side of the second polar plate is in multi-point contact with the cathode, and the side, away from the anode, of the first polar plate is provided with a first adjustable elastic pressing piece which elastically presses the first polar plate towards the anode. A second adjustable elastic pressing piece for elastically pressing the second polar plate towards the cathode is arranged on one side, far away from the cathode, of the second polar plate; according to the utility model, the moderate contact area between the electrode plate and the electrode is ensured while the electrode is stably supported, so that the contact resistance can be reduced, the flowability of electrolyte at the electrode is not influenced, the turbulent flow of the electrolyte is also considered, and the efficiency of electrolytic hydrogen production is effectively improved finally.

Description

Technical Field

[0001] This invention belongs to the technical field of electrolytic hydrogen production, specifically relating to an electrode structure that can improve electrolysis efficiency. Background Technology

[0002] Electrolysis is a commonly used method for producing hydrogen in existing technologies. It involves passing an electrolyte into an electrolysis chamber composed of components such as electrodes, plates, and frames, and then processing the electrolyte to produce hydrogen.

[0003] In existing technologies, the plates contact the electrodes to support them. However, in actual hydrogen production, large-area planar contact between the plates and electrodes can affect the flow of electrolyte at the electrodes, causing uneven electrolyte concentration distribution and reducing the efficiency of hydrogen electrolysis. Point contact between the plates and electrodes reduces the contact area, increasing contact resistance and also lowering efficiency. Furthermore, existing technologies use a fixed structure for contact, which can lead to gaps after electrode wear. The fixed structure also cannot control the tightness of the contact, resulting in excessive pressure on the electrodes and potentially causing damage, deformation, or puncture of the electrode spacer.

[0004] Therefore, in view of the problems of existing electrolytic hydrogen production electrode structures, such as excessively large contact area between the electrode and the plate affecting the electrolyte flow field, excessively small contact area between the electrode and the plate increasing contact resistance, and the inability to control the contact force between the electrode and the plate, this utility model discloses an electrode structure that can improve electrolysis efficiency. Utility Model Content

[0005] This utility model discloses an electrode structure that can improve electrolysis efficiency. While providing stable support for the electrode, it ensures that there is a moderate contact area between the electrode plate and the electrode, which can reduce contact resistance without affecting the fluidity of the electrolyte at the electrode, and at the same time take into account the disturbance of the electrolyte, thus effectively improving the efficiency of electrolytic hydrogen production.

[0006] This utility model is achieved through the following technical solution:

[0007] An electrode structure capable of improving electrolysis efficiency includes an electrode frame. An anode and a cathode are respectively disposed on both sides of the inner side of the electrode frame. A first electrode plate is slidably disposed inside the electrode frame on the side of the anode away from the cathode, and a second electrode plate is slidably disposed inside the electrode frame on the side of the cathode away from the anode. Turbulence protrusions are arrayed on the surfaces of both the anode and the cathode. One side of the first electrode plate is in multiple contact with the anode, and one side of the second electrode plate is in multiple contact with the cathode. A first adjustable elastic clamping member is disposed on the side of the first electrode plate away from the anode to elastically press the first electrode plate toward the anode, and a second adjustable elastic clamping member is disposed on the side of the second electrode plate away from the cathode to elastically press the second electrode plate toward the cathode.

[0008] To better realize this utility model, further, the first electrode plate is provided with a plurality of first protruding contact portions that contact the anode on the side near the anode, and the second electrode plate is provided with a plurality of second protruding contact portions that contact the cathode on the side near the cathode.

[0009] To better realize this utility model, the first protruding contact portion further includes a first contact piece, on which a flow hole is provided; the second protruding contact portion includes a second contact piece, on which a flow hole is provided.

[0010] To better realize this utility model, both the first contact piece and the second contact piece are wavy, the contact width between the first contact piece and the anode is greater than or equal to 5mm, and the contact width between the second contact piece and the cathode is greater than or equal to 5mm.

[0011] To better realize this utility model, the first adjustable elastic clamping member further includes a first pressure ring and a first annular spring sheet. The first pressure ring is screwed into the pole frame and the first annular spring sheet is coaxially arranged between the first pressure ring and the first pole plate.

[0012] To better realize this utility model, the second adjustable elastic clamping member further includes a second pressure ring and a second annular spring sheet. The second pressure ring is screwed into the pole frame and the second annular spring sheet is coaxially arranged between the second pressure ring and the second pole plate.

[0013] To better realize this utility model, the pole frame further includes a left pole frame, a right pole frame, and a middle gasket ring. The left pole frame and the right pole frame are correspondingly snapped together. A middle gasket ring is pressed between the left pole frame and the right pole frame. A positive limit groove is provided on one side of the middle gasket ring, and a negative limit groove is provided on the other side of the middle gasket ring. The anode is installed inside the positive limit groove, and the cathode is installed inside the negative limit groove.

[0014] To better realize this utility model, the right side of the left pole frame is provided with a snap-fit ​​groove, and the left side of the right pole frame is provided with a snap-fit ​​protrusion, and the snap-fit ​​groove and the snap-fit ​​protrusion are snapped together accordingly.

[0015] To better realize this utility model, further, a diaphragm is provided inside the intermediate gasket ring between the anode and the cathode.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] (1) This utility model achieves multi-point contact between the first electrode plate and the anode by setting a first protruding contact portion consisting of several wavy first contact pieces between the first electrode plate and the anode, ensuring that there is sufficient contact area between the first electrode plate and the anode to reduce contact resistance, while avoiding the contact area between the first electrode plate and the anode being too large and affecting the fluidity of the electrolyte on the electrode surface; similarly, this utility model achieves multi-point contact between the second electrode plate and the cathode by setting a second protruding contact portion consisting of several wavy second contact pieces between the second electrode plate and the cathode, ensuring that there is sufficient contact area between the second electrode plate and the cathode to reduce contact resistance, while avoiding the contact area between the second electrode plate and the cathode being too large and affecting the fluidity of the electrolyte on the electrode surface, thereby improving the efficiency of hydrogen production by electrolysis;

[0018] (2) This utility model provides several interference flow protrusions on the surfaces of the anode and cathode in a hierarchical manner from top to bottom. The interference flow protrusions disturb the electrolyte flowing through the electrode surface, making the electrolyte concentration distribution more uniform and thus improving the efficiency of electrolytic hydrogen production.

[0019] (3) By setting a first adjustable elastic clamping member, the axial clamping force of the first adjustable elastic clamping member is adjusted, thereby adjusting the pre-tightening force between the first electrode plate and the anode. This ensures that the first electrode plate provides stable support for the anode while avoiding excessive pressure on the anode, which could cause anode deformation or diaphragm rupture. Similarly, by setting a second adjustable elastic clamping member, the axial clamping force of the second adjustable elastic clamping member is adjusted, thereby adjusting the pre-tightening force between the second electrode plate and the cathode. This ensures that the second electrode plate provides stable support for the cathode while avoiding excessive pressure on the cathode, which could cause anode deformation or diaphragm rupture. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the exploded structure of the electrode.

[0021] Figure 2 This is a three-dimensional assembly diagram of the electrode structure;

[0022] Figure 3This is a cross-sectional structural diagram of the electrode structure.

[0023] Figure 4 This is a schematic diagram of the turbulence protrusion;

[0024] Figure 5 This is a schematic diagram of the first protruding contact portion on the first electrode plate;

[0025] Figure 6 This is a schematic diagram of the second protruding contact portion on the second electrode plate;

[0026] Figure 7 This is a schematic diagram of the intermediate washer ring.

[0027] Wherein: 1-Electrode frame; 2-Anode; 3-Cathode; 4-Turbulence protrusion; 5-Diaphragm; 11-Left electrode frame; 12-Right electrode frame; 13-Intermediate gasket ring; 100-First electrode plate; 200-Second electrode plate; 101-First protruding contact part; 201-Second protruding contact part; 111-First adjustable elastic clamping element; 222-Second adjustable elastic clamping element; 131-Anode limit groove; 132-Cathode limit groove; A1-First contact piece; B1-Second contact piece; C1-First pressure ring; C2-First annular spring piece; D1-Second pressure ring; D2-Second annular spring piece. Detailed Implementation

[0028] Example 1:

[0029] One electrode structure in this embodiment that can improve electrolysis efficiency is, for example... Figures 1-4 As shown, the device includes an electrode frame 1. An anode 2 and a cathode 3 are respectively disposed on both sides of the inner side of the electrode frame 1. A first electrode plate 100 is slidably disposed inside the electrode frame 1 on the side of the anode 2 away from the cathode 3. A second electrode plate 200 is slidably disposed inside the electrode frame 1 on the side of the cathode 3 away from the anode 2. Turbulence protrusions 4 are arrayed on the surfaces of the anode 2 and the cathode 3. One side of the first electrode plate 100 is in multiple contact with the anode 2, and one side of the second electrode plate 200 is in multiple contact with the cathode 3. A first adjustable elastic clamping member 111 is disposed on the side of the first electrode plate 100 away from the anode 2 to elastically press the first electrode plate 100 toward the anode 2. A second adjustable elastic clamping member 222 is disposed on the side of the second electrode plate 200 away from the cathode 3 to elastically press the second electrode plate 200 toward the cathode 3.

[0030] The electrode frame 1 is equipped with an oxygen-side flow channel, a hydrogen-side flow channel, and an electrolyte flow channel. The oxygen-side flow channel is connected to one side of the anode 2 through a radial opening, allowing oxygen generated at the anode 2 to flow into the oxygen-side flow channel via the radial opening. The hydrogen-side flow channel is connected to one side of the cathode 3 through a radial opening, allowing hydrogen generated at the cathode 3 to flow into the hydrogen-side flow channel via the radial opening, thus achieving separate collection of hydrogen and oxygen and preventing mixing. The electrolyte flow channel is connected to one side of both the anode 2 and the cathode 3 through radial openings, allowing the electrolyte to flow into both the anode 2 and the cathode 3 to participate in the electrolytic hydrogen production reaction.

[0031] When the electrolyte flows along the surfaces of the anode 2 and cathode 3, it is disturbed by the turbulence protrusion 4, which improves the electrolyte field and makes the electrolyte concentration distribution more uniform during the flow process, thereby avoiding the situation where the concentration difference of the electrolyte causes a decrease in the efficiency of hydrogen production by electrolysis.

[0032] Simultaneously, the first adjustable elastic clamping member 111 presses the first electrode plate 100 towards the anode 2, and the first electrode plate 100 adopts a multi-point contact structure to contact the anode 2, thus ensuring sufficient contact area between the first electrode plate 100 and the anode 2 to reduce contact resistance, while avoiding excessive contact area between the first electrode plate 100 and the anode 2, which could affect the flow of electrolyte. By adjusting the clamping force of the first adjustable elastic clamping member 111 on the first electrode plate 100, the first electrode plate 100 contacts the anode 2 with moderate pressure, providing stable support for the anode 2 while avoiding excessive contact pressure that could damage the anode 2. Similarly, the second adjustable elastic clamping member 222 presses the second electrode plate 200 towards the cathode 3, and the second electrode plate 200 adopts a multi-point contact structure to contact the cathode 3, thus ensuring sufficient contact area between the second electrode plate 200 and the cathode 3 to reduce contact resistance, while avoiding excessive contact area between the second electrode plate 200 and the cathode 3, which could affect the flow of electrolyte. By adjusting the clamping force of the second adjustable elastic clamping member 222 on the second electrode plate 200, the second electrode plate 200 contacts the cathode 3 with a moderate pressure, providing stable support for the cathode 3 while avoiding excessive contact pressure that could damage the cathode 3.

[0033] Example 2:

[0034] This embodiment discloses an electrode structure that can improve electrolysis efficiency, which is an improvement on Embodiment 1, such as... Figure 5 and Figure 6 As shown, the first electrode plate 100 has a plurality of first protruding contact portions 101 arranged in an array on the side near the anode 2, and the second electrode plate 200 has a plurality of second protruding contact portions 201 arranged in an array on the side near the cathode 3, which in turn contact the cathode 3.

[0035] Several turbulence protrusions 4 are arranged in a hierarchical manner from top to bottom on the surfaces of the anode 2 and the cathode 3. The first protrusion contact portion 101 and the second protrusion contact portion 201 are disposed between adjacent layers of turbulence protrusions 4 and are flush with the turbulence protrusions 4 in the vertical direction. This ensures that the electrode plate and the electrode have sufficient contact area while avoiding hindering the flow of electrolyte between adjacent turbulence protrusions 4, thereby effectively improving the efficiency of hydrogen production by electrolysis.

[0036] Furthermore, such as Figure 5 As shown, the first protruding contact portion 101 includes a first contact piece A1, and the first contact piece A1 is provided with a flow hole; as Figure 6 As shown, the second protruding contact portion 201 includes a second contact piece B1, on which a flow passage hole is provided. The flow passage hole is provided to allow the electrolyte to flow smoothly between the different levels of turbulence protrusions 4, ensuring the fluidity of the electrolyte. At the same time, the first contact piece A1 and the second contact piece B1 ensure that there is sufficient contact area between the electrode plate and the electrode to reduce the contact resistance, without affecting the fluidity of the electrolyte.

[0037] Furthermore, both the first contact piece A1 and the second contact piece B1 are wavy. The contact width between the first contact piece A1 and the anode 2 is greater than or equal to 5 mm, and the contact width between the second contact piece B1 and the cathode 3 is greater than or equal to 5 mm. The first contact piece A1 and the second contact piece B1 are formed by a series of linearly arranged arc-shaped thin sheets to create a continuous wavy structure. The end of the arc-shaped thin sheet that contacts the electrode has a flat surface to increase the contact area with the electrode. The continuous undulating wavy structure forms a flow passage between the electrode and the plate to ensure smooth flow of the electrolyte.

[0038] The rest of this embodiment is the same as that of Embodiment 1, so it will not be described again.

[0039] Example 3:

[0040] This embodiment discloses an electrode structure that can improve electrolysis efficiency, which is an optimization based on Embodiment 1 or 2, such as... Figure 1 , Figure 3 As shown, the first adjustable elastic clamping member 111 includes a first pressure ring C1 and a first annular spring C2. The first pressure ring C1 is screwed into the pole frame 1, and the first annular spring C2 is coaxially disposed between the first pressure ring C1 and the first pole plate 100. The second adjustable elastic clamping member 222 includes a second pressure ring D1 and a second annular spring D2. The second pressure ring D1 is screwed into the pole frame 1, and the second annular spring D2 is coaxially disposed between the second pressure ring D1 and the second pole plate 200.

[0041] The inner surface of the electrode frame 1 is provided with internal threads, and the outer surfaces of the first pressure ring C1 and the second pressure ring D1 are provided with external threads. The first pressure ring C1 and the second pressure ring D1 are installed inside the electrode frame 1 through the mating structure between the threads. At the same time, by rotating the first pressure ring C1, the first annular spring C2 is axially compressed by the first pressure ring C1. The elastic force generated by the elastic deformation of the first annular spring C2 presses the first electrode plate 100 toward the anode 2 with an appropriate preload. Similarly, by rotating the second pressure ring D1, the second annular spring D2 is axially compressed by the second pressure ring D1. The elastic force generated by the elastic deformation of the second annular spring D2 presses the second electrode plate 200 toward the cathode 3 with an appropriate preload. Through the above structure, the preload of the contact between the electrode plate and the electrode can be adjusted, ensuring that the electrode plate provides stable support for the electrode while avoiding excessive pressure between the electrode plate and the electrode, thereby preventing electrode deformation and electromagnetic puncture of the diaphragm.

[0042] The rest of this embodiment is the same as that of embodiment 1 or 2, so it will not be described again.

[0043] Example 4:

[0044] This embodiment discloses an electrode structure that can improve electrolysis efficiency, which is optimized based on any one of embodiments 1-3, such as... Figures 1-3 As shown, the pole frame 1 includes a left pole frame 11, a right pole frame 12, and a middle gasket 13. The left pole frame 11 and the right pole frame 12 are correspondingly snapped together. The middle gasket 13 is pressed between the left pole frame 11 and the right pole frame 12. A positive limit groove 131 is provided on one side of the middle gasket 13, and a negative limit groove 132 is provided on the other side of the middle gasket 13. The anode 2 is installed inside the positive limit groove 131, and the cathode 3 is installed inside the negative limit groove 132.

[0045] After the left pole frame 11 and the right pole frame 12 are snapped together, the intermediate gasket 13 is pressed and fixed between the left pole frame 11 and the right pole frame 12. A diaphragm 5 is located inside the intermediate gasket 13 between the anode 2 and the cathode 3. The diaphragm 5 isolates the anode 2 and the cathode 3, and under the pre-tightening force of the electrode plates, the anode 2 and the cathode 3 contact the left and right sides of the diaphragm 5 respectively. Figure 7 As shown, the anode 2 is axially positioned and installed by the anode limit groove 131 on the left side of the intermediate gasket 13, and the cathode 3 is axially positioned and installed by the cathode limit groove 132 on the right side of the intermediate gasket 13, so as to prevent the electrode from axially moving and piercing the diaphragm 5 during the installation process.

[0046] Furthermore, such as Figure 3As shown, a snap-fit ​​groove is provided on the right side of the left pole frame 11, and a snap-fit ​​protrusion is provided on the left side of the right pole frame 12. The snap-fit ​​groove and the snap-fit ​​protrusion engage accordingly. After aligning and splicing the snap-fit ​​protrusion and the snap-fit ​​groove, the left pole frame 11 and the right pole frame 12 can be snapped together. At the same time, a sealing ring is provided on the splicing surface of the snap-fit ​​protrusion and the snap-fit ​​groove to provide circumferential sealing for the overall pole frame 1 formed after splicing.

[0047] The rest of this embodiment is the same as any one of embodiments 1-3, so it will not be described again.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An electrode structure capable of improving electrolysis efficiency, comprising an electrode frame (1), wherein an anode (2) and a cathode (3) are respectively disposed on both sides inside the electrode frame (1), characterized in that, A first electrode plate (100) is slidably disposed inside the electrode frame (1) on the side of the anode (2) away from the cathode (3), and a second electrode plate (200) is slidably disposed inside the electrode frame (1) on the side of the cathode (3) away from the anode (2); turbulence protrusions (4) are arrayed on the surfaces of the anode (2) and the cathode (3); one side of the first electrode plate (100) is in multiple contact with the anode (2), and one side of the second electrode plate (200) is in multiple contact with the cathode (3); a first adjustable elastic clamping member (111) is disposed on the side of the first electrode plate (100) away from the anode (2) to elastically press the first electrode plate (100) toward the anode (2), and a second adjustable elastic clamping member (222) is disposed on the side of the second electrode plate (200) away from the cathode (3) to elastically press the second electrode plate (200) toward the cathode (3).

2. The electrode structure according to claim 1, which can improve electrolysis efficiency, is characterized in that, The first electrode plate (100) has a plurality of first protruding contact portions (101) arranged in an array on the side near the anode (2) and the second electrode plate (200) has a plurality of second protruding contact portions (201) arranged in an array on the side near the cathode (3) and the cathode (3).

3. The electrode structure according to claim 2, which can improve electrolysis efficiency, is characterized in that, The first protruding contact portion (101) includes a first contact piece (A1) with a flow hole; the second protruding contact portion (201) includes a second contact piece (B1) with a flow hole.

4. The electrode structure according to claim 3, which can improve electrolysis efficiency, is characterized in that, Both the first contact piece (A1) and the second contact piece (B1) are wavy. The contact width between the first contact piece (A1) and the anode (2) is greater than or equal to 5 mm, and the contact width between the second contact piece (B1) and the cathode (3) is greater than or equal to 5 mm.

5. An electrode structure capable of improving electrolysis efficiency according to any one of claims 1-4, characterized in that, The first adjustable elastic clamping member (111) includes a first pressure ring (C1) and a first annular spring (C2). The first pressure ring (C1) is screwed into the inside of the pole frame (1). The first annular spring (C2) is coaxially arranged between the first pressure ring (C1) and the first pole plate (100).

6. An electrode structure capable of improving electrolysis efficiency according to any one of claims 1-4, characterized in that, The second adjustable elastic clamping member (222) includes a second pressure ring (D1) and a second annular spring (D2). The second pressure ring (D1) is screwed into the pole frame (1), and the second annular spring (D2) is coaxially arranged between the second pressure ring (D1) and the second pole plate (200).

7. An electrode structure capable of improving electrolysis efficiency according to any one of claims 1-4, characterized in that, The pole frame (1) includes a left pole frame (11), a right pole frame (12), and a middle gasket (13). The left pole frame (11) and the right pole frame (12) are connected to each other. A middle gasket (13) is pressed between the left pole frame (11) and the right pole frame (12). A positive limit groove (131) is provided on one side of the middle gasket (13), and a negative limit groove (132) is provided on the other side of the middle gasket (13). The anode (2) is installed inside the positive limit groove (131), and the cathode (3) is installed inside the negative limit groove (132).

8. The electrode structure according to claim 7, which can improve electrolysis efficiency, is characterized in that, The left pole frame (11) has a snap-fit ​​groove on the right side and the right pole frame (12) has a snap-fit ​​protrusion on the left side, and the snap-fit ​​groove and the snap-fit ​​protrusion are snapped together.

9. An electrode structure capable of improving electrolysis efficiency according to claim 8, characterized in that, The interior of the intermediate gasket (13) is provided with a diaphragm (5) between the anode (2) and the cathode (3).

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