Electrode plate, electrode plate assembly and electrolysis equipment
By designing electrode plates with opposite convex structures to form a flow channel, the problem of large contact resistance of bipolar plates in existing electrolytic water hydrogen production equipment is solved, the reaction efficiency is improved, and energy consumption and equipment complexity is reduced.
Patent Information
- Application Number
- CN202323434983.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-15
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2033-12-15
AI Technical Summary
In the existing electrolytic hydrogen production equipment, the optical plate + mesh plate structure of the bipolar plate leads to a large contact resistance, which increases energy consumption and affects the reaction efficiency.
An electrode plate was designed with a flow channel region, a shunt region and a raised structure. The raised direction was opposite, forming a flow channel, reducing the need for additional flow channel, improving the reaction efficiency, and passing through the anode inlet flow channel Structure and cathode inlet runner structure optimize fluid guidance.
It reduces ohmic losses, simplifies the electrolytic cell equipment structure, improves reaction efficiency, and reduces the cost and complexity of the electrolytic equipment.
Smart Images
Figure CN222226582U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrolysis, and in particular to an electrode plate, an electrode plate assembly and electrolysis equipment. Background Art
[0002] At present, the electrolysis of water to produce hydrogen is an efficient and environmentally friendly way to produce hydrogen. Its principle is to apply current and voltage to the electrolyzer, so that the water molecules in the electrolyzer cavity undergo electrochemical reactions on the electrodes, decomposing them into hydrogen and oxygen. The bipolar plate in the electrolyzer plays the role of dividing the cathode and anode, supporting the gas diffusion layer and evenly distributing the fluid, and is the core component of the electrolyzer.
[0003] The bipolar plates of existing electrolytic equipment, such as electrolytic cells, are mainly of a bare plate + mesh plate structure, which may result in a large contact resistance and increase energy consumption. Utility Model Content
[0004] In order to solve at least one aspect of the above problems, the utility model provides an electrode plate, an electrode plate assembly and an electrolysis device.
[0005] In a first aspect, the utility model provides an electrode plate, comprising a plate body, the plate body having a flow channel area, a first diversion area and a second diversion area, the first diversion area and the second diversion area are respectively arranged on opposite sides of the flow channel area; the plate body at the flow channel area is provided with a plurality of first protrusion structures and second protrusion structures arranged at intervals, the protrusion directions of the first protrusion structure and the second protrusion structure are opposite along the thickness direction of the plate body, and the first protrusion structure and the second protrusion structure are respectively extended in the direction from the first diversion area to the second diversion area; the plate body at the first diversion area is provided with a plurality of third protrusion structures and fourth protrusion structures arranged at intervals, the protrusion directions of the third protrusion structure and the fourth protrusion structure are opposite along the thickness direction of the plate body, and the plate body at the second diversion area is provided with a plurality of fifth protrusion structures and sixth protrusion structures arranged at intervals, and the protrusion directions of the fifth protrusion structure and the sixth protrusion structure are opposite along the thickness direction of the plate body.
[0006] Optionally, the plate body is further provided with a first cavity opening and a second cavity opening, and the first diversion area and the second diversion area are respectively provided with the first cavity opening and the second cavity opening on one side away from the flow channel area, and the first diversion area and the second diversion area, the two first cavity openings and the two second cavity openings are rotationally symmetrical relative to the center of the plate body.
[0007] Optionally, the electrode plate further includes an anode inlet flow channel structure and a cathode inlet flow channel structure, wherein the anode inlet flow channel structure is respectively provided between the first cavity opening and the first diversion area and between the first cavity opening and the second diversion area; the cathode inlet flow channel structure is respectively provided between the second cavity opening and the first diversion area and between the second cavity opening and the second diversion area, and the anode inlet flow channel structure and the cathode inlet flow channel structure are respectively located at the two end surfaces of the plate body along the thickness direction.
[0008] Optionally, the anode inlet flow channel structure includes a first plate, a first stopper and a first groove structure arranged on the end face of the plate body along the thickness direction, part of the plate body of the first plate is bent along the thickness direction to form a plurality of first protrusions with a U-shaped cross-section, the plurality of first protrusions are arranged at intervals, one end of the first plate along the thickness direction is located in the first groove structure, and the first stopper covers the other end of the first plate along the thickness direction.
[0009] Optionally, the cathode inlet flow channel structure includes a second plate, a second baffle and a second groove structure arranged on the end face of the plate body along the thickness direction, part of the plate body of the second plate is bent along the thickness direction to form a plurality of second protrusions with a U-shaped cross-section, the plurality of second protrusions are arranged at intervals, one end of the second plate along the thickness direction is located in the second groove structure, and the second baffle covers the other end of the second plate along the thickness direction.
[0010] Optionally, a first seal and a second seal are further included, and the first seal and the second seal respectively cover the two end surfaces of the plate body along the thickness direction.
[0011] In a second aspect, the utility model provides an electrode plate assembly, comprising the electrode plate as described above.
[0012] Optionally, the electrode plate assembly includes a plurality of electrode plates assembled along the thickness direction of the plate body, and the first diversion region and the second diversion region of two adjacent plate bodies are respectively aligned and arranged, and at the end surfaces of the corresponding first diversion region and the second diversion region facing each other, the third protrusion structure of the first diversion region and the sixth protrusion structure of the second diversion region are arranged facing each other along the thickness direction of the plate body.
[0013] Optionally, the electrode plate assembly further comprises an anode gas diffusion layer, a membrane electrode and a cathode gas diffusion layer, and the anode gas diffusion layer, the membrane electrode and the cathode gas diffusion layer are sequentially arranged between the two plate bodies along the thickness direction of the plate bodies.
[0014] In a third aspect, the utility model provides an electrolysis device, comprising the electrode plate assembly as described above.
[0015] Compared with the prior art, the beneficial effects of the utility model are:
[0016] The flow channel area of the plate body is respectively provided with a first convex structure and a second convex structure along the thickness direction of the plate body, and the convex directions of the first convex structure and the second convex structure are opposite along the thickness direction of the plate body, that is, the two opposite sides of the flow channel area along the thickness direction of the plate body are concave-convex structures to respectively form flow guide channels; the first diversion area and the second diversion area are respectively provided at opposite ends of the flow channel area, and the first diversion area is respectively provided with a third convex structure and a fourth convex structure along the thickness direction of the plate body, and the convex directions of the third convex structure and the fourth convex structure are opposite along the thickness direction of the plate body, and the second diversion area is respectively provided with a third convex structure and a fourth convex structure along the thickness direction of the plate body. A fifth protrusion structure and a sixth protrusion structure are provided, and the protrusion directions of the fifth protrusion structure and the sixth protrusion structure are opposite to each other in the thickness direction of the plate body, that is, the first diversion area and the second diversion area have the same concave-convex structure on the opposite sides in the thickness direction of the plate body. In this way, the two sides of the plate body in the thickness direction can be divided into a cathode side and an anode side, so as to achieve the effect of one plate with two fields. During the use of the electrode plate, after the two electrode plates are assembled, a flow channel is formed between the two electrode plates, that is, the electrode plate can be used as a mass transfer layer, and there is no need to add an additional guide structure, which reduces the complexity of the electrolytic cell equipment from a structural point of view, reduces ohmic losses, and improves reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is an exploded schematic diagram of an electrode plate of an embodiment of the utility model;
[0018] Figure 2 The structure of the electrode plate of the embodiment of the utility model is shown in FIG. Figure 1 ;
[0019] Figure 3 for Figure 2 A partial enlarged view of point I in the middle;
[0020] Figure 4 The structure of the plate body of the utility model embodiment is shown in FIG. Figure 2 ;
[0021] Figure 5 for Figure 4 A partial enlarged view of position II in the middle;
[0022] Figure 6 for Figure 4 A partial enlarged view of the part III in the middle;
[0023] Figure 7 It is a partial schematic diagram of an electrode plate assembly according to an embodiment of the utility model;
[0024] Figure 8A schematic diagram of the flow path on the anode side of the electrode plate of an embodiment of the utility model;
[0025] Fig. 9 Schematic diagram of the cathode side flow path of the electrode plate according to an embodiment of the utility model.
[0026] Description of reference numerals:
[0027] 100, electrode plate; 110, first sealing member; 120, first stopper; 130, first plate member; 140, plate body; 141, first diversion region; 141A, third protrusion structure; 141B, fourth protrusion structure; 142, flow channel region; 142A, first protrusion structure; 142B, second protrusion structure; 143, second diversion region; 143A, fifth protrusion structure; 143B, sixth protrusion structure; 144, first groove structure; 145, first cavity opening; 146, second groove structure; 147, second cavity opening; 150, second plate member; 160, second stopper; 170, second sealing member; 200, anode gas diffusion layer; 300, membrane electrode; 400, cathode gas diffusion layer. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.
[0030] Moreover, the Z-axis in the accompanying drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis represents the bottom; the X-axis in the accompanying drawings represents the longitudinal direction, that is, the front and back position, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the front, and the negative direction of the X-axis represents the back; the Y-axis in the accompanying drawings represents the horizontal direction, that is, the left and right position, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the right, and the negative direction of the Y-axis represents the left.
[0031] It should also be noted that the aforementioned Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0032] like Figure 1 , 4As shown, the electrode plate 100 of the embodiment of the utility model includes a plate body 140, the plate body 140 has a flow channel area 142, a first shunt area 141 and a second shunt area 143, the first shunt area 141 and the second shunt area 143 are respectively arranged on opposite sides of the flow channel area 142; the plate body 140 at the flow channel area 142 is provided with a plurality of first convex structures 142A and a second convex structure 142B arranged at intervals, the convex directions of the first convex structure 142A and the second convex structure 142B are opposite along the thickness direction of the plate body 140, and the first convex structure 142A and the second convex structure 142B are respectively It is extended in the direction from the first diversion area 141 to the second diversion area 143; a plurality of third protrusion structures 141A and fourth protrusion structures 141B are provided at the plate body 140 at the first diversion area 141, and the protrusion directions of the third protrusion structure 141A and the fourth protrusion structure 141B are opposite along the thickness direction of the plate body 140; a plurality of fifth protrusion structures 143A and sixth protrusion structures 143B are provided at the plate body 140 at the second diversion area 143, and the protrusion directions of the fifth protrusion structure 143A and the sixth protrusion structure 143B are opposite along the thickness direction of the plate body 140.
[0033] like Figure 1 , 4 As shown, the first diversion area 141 and the second diversion area 143 are respectively provided on opposite sides of the flow channel area 142 along the X-axis direction; a plurality of first convex structures 142A and second convex structures 142B are stamped out of the plate body 140 at the flow channel area 142 and arranged at intervals along the second direction, such as the Y-axis direction, and the convex directions of the first convex structure 142A and the second convex structure 142B are opposite along the thickness of the plate body 140, such as the Z-axis direction, and the first convex structure 142A and the second convex structure 142B are respectively extended along the Y-axis direction, that is, the two opposite sides of the flow channel area 142 along the thickness direction of the plate body 140 are respectively concave-convex structures, and the concave-convex structures are alternately arranged along the second direction, such as the Y-axis direction, to form a guide channel, and the two ends of the guide channel extend to the first diversion area 141 and the second diversion area 143 respectively, that is, the two opposite sides of the plate body 140 in the thickness direction are formed with guide channels; as shown Figure 5 As shown, a plurality of third convex structures 141A and fourth convex structures 141B are stamped out of the plate body 140 at the first diversion area 141, and the convex directions of the third convex structures 141A and the fourth convex structures 141B are opposite along the thickness direction of the plate body 140, that is, the two opposite sides of the first diversion area 141 along the thickness direction of the plate body 140 also present a concave-convex structure; as shown Figure 6As shown, a plurality of spaced fifth protrusion structures 143A and sixth protrusion structures 143B are stamped out of the plate body at the second diversion area 143, and the protrusion directions of the fifth protrusion structure 143A and the sixth protrusion structure 143B are opposite along the thickness direction of the plate body 140, that is, the two opposite sides of the second diversion area 143 along the thickness direction of the plate body 140 also present a concave-convex structure.
[0034] In this way, the two sides of the plate body 140 of this embodiment along the thickness direction are respectively the cathode side and the anode side. When in use, the effect of one plate with two fields can be achieved. During the use of the electrode plate 100, after the two electrode plates are assembled, a flow channel is formed between the two electrode plates, that is, the electrode plate can be used as a mass transfer layer. Therefore, there is no need to add an additional flow guide structure, which reduces the complexity of the electrolytic cell equipment from a structural perspective, reduces ohmic losses, and improves reaction efficiency.
[0035] In this embodiment, the first protrusion structure 142A and the second protrusion structure 142B have the same shape and size, that is, the first protrusion structure 142A and the second protrusion structure 142B have the same structure except that the protrusion directions are opposite, thereby simplifying the stamping mold and further reducing the cost of the electrolysis equipment. In addition, when the first protrusion structure 142A and the second protrusion structure 142B have the same shape and size, the electrode plate 100 has a higher versatility.
[0036] Optionally, the plate body 140 is further provided with a first cavity opening 145 and a second cavity opening 147, and the first diversion area 141 and the second diversion area 143 are respectively spaced apart from the side of the flow channel area 142, and the first diversion area 141 and the second diversion area 143, the two first cavity openings 145 and the two second cavity openings 147 are rotationally symmetrical relative to the center of the plate body 140.
[0037] like Figure 4 As shown, the plate body 140 is provided with a first cavity 145 and a second cavity 147. The first diversion area 141 and the second diversion area 143 are provided with a first cavity 145 and a second cavity 147 at intervals along the Y-axis direction on one side away from the flow channel area 142. The two first cavities 145 are oxygen or water cavities, and the two second cavities 147 are hydrogen or water cavities. The plate body 140 is a rectangular structure and has a first diagonal line and a second diagonal line, as shown in FIG. Figure 4 As shown, the two first cavities 145 are located on the first diagonal of the plate body 140, the two second cavities 147 are located on the second diagonal of the plate body 140, and the first diversion area 141 and the second diversion area 143, the two first cavities 145 and the two second cavities 147 are rotationally symmetrical relative to the center of the plate body 140.
[0038] In this way, when two electrode plates 100 with the same structure are assembled, one of the electrode plates 100 is horizontally rotated 180° relative to the vertical center line of the plate body 140, so that the first cavities 145 of the two plate bodies 140 overlap to form an inlet and outlet for oxygen or water, the second cavities 147 of the two plate bodies 140 overlap to form an inlet and outlet for hydrogen or water, and the first diversion area 141 and the second diversion area 143 of the two plate bodies 140 overlap to form a water flow channel.
[0039] Optionally, the electrode plate further includes an anode inlet flow channel structure and a cathode inlet flow channel structure, wherein an anode inlet flow channel structure is respectively provided between the first cavity 145 and the first diversion area 141 and between the first cavity 145 and the second diversion area 143; a cathode inlet flow channel structure is respectively provided between the second cavity 147 and the first diversion area 141 and between the second cavity 147 and the second diversion area 143, and the anode inlet flow channel structure and the cathode inlet flow channel structure are respectively located at the two end surfaces of the plate body 140 along the thickness direction.
[0040] In this embodiment, an anode inlet flow channel structure is provided on one end surface of the plate body 140 along the thickness direction between the first cavity opening 145 and the first diversion area 141 and between the first cavity opening 145 and the second diversion area 143, and a cathode inlet flow channel structure is provided on the other end surface of the plate body 140 along the thickness direction between the second cavity opening 147 and the first diversion area 141 and between the second cavity opening 147 and the second diversion area 143.
[0041] In this way, the existence of the anode inlet flow channel structure and the cathode inlet flow channel structure plays a guiding role. For example, after the fluid enters the first cavity 145, the anode inlet flow channel structure can guide the fluid to the first diversion area 141; for example, the fluid and hydrogen in the flow channel area 142 on the cathode side can be guided to the second cavity 147 through the cathode inlet flow channel structure.
[0042] Optionally, the anode inlet flow channel structure includes a first plate 130, a first stopper 120 and a first groove structure 144 arranged on the end face of the plate body 140 along the thickness direction. Part of the plate body of the first plate 130 is bent along the thickness direction to form a plurality of first protrusions with a U-shaped cross-section. The plurality of first protrusions are arranged at intervals, one end of the first plate 130 along the thickness direction is located in the first groove structure 144, and the first stopper 120 covers the other end of the first plate 130 along the thickness direction.
[0043] like Figure 3As shown, the first plate 130 is a stamped plate, part of which is bent along the thickness direction to form a plurality of first protrusions with a U-shaped cross-section, and the plurality of first protrusions are arranged at intervals, that is, the cross-section of the first plate 130 is a wall-like structure as a whole, and the projections of the plurality of first protrusions can be regarded as forming a plurality of flow channels, one end of the first plate 130 along the thickness direction is located in the first groove structure 144, and the baffle covers the other end of the first plate 130 along the thickness direction. After the anode inlet flow channel structure is assembled, the first plate 130 can be respectively surrounded by the first groove structure 144 and the first baffle 120 to form a flow channel unit with openings at both ends, thereby connecting the first cavity 145 and the first diversion area 141.
[0044] In this way, the anode inlet flow channel structure is a modular structure, which is not only easy to produce but also can be replaced according to actual needs.
[0045] Optionally, the cathode inlet flow channel structure includes a second plate 150, a second stopper 160 and a second groove structure 146 arranged on the end face of the plate body 140 along the thickness direction, part of the plate body of the second plate 150 is bent along the thickness direction to form a plurality of second protrusions with a U-shaped cross-section, the plurality of second protrusions are arranged at intervals, one end of the second plate 150 along the thickness direction is located in the second groove structure 146, and the second stopper 160 covers the other end of the second plate 150 along the thickness direction.
[0046] like Figure 3 As shown, the second plate 150 is a stamped plate, part of which is bent along the thickness direction to form a plurality of second protrusions with a U-shaped cross-section, and the plurality of second protrusions are arranged at intervals, that is, the cross-section of the second plate 150 is an overall wall-like structure, and the projections of the plurality of second protrusions can be regarded as forming a plurality of flow channels, one end of the second plate 150 along the thickness direction is located in the first groove structure 144, and the second stopper 160 covers the other end of the first plate 130 along the thickness direction. After the cathode inlet flow channel structure is assembled, the second plate 150 can be respectively combined with the second groove structure 146 and the second stopper 160 to form a flow channel unit with openings at both ends, thereby connecting the first cavity 145 and the first diversion area 141.
[0047] In this way, the anode inlet flow channel structure is a modular structure, which is not only easy to produce but also can be replaced according to actual needs.
[0048] Optionally, the electrode plate 100 further includes a first seal 110 and a second seal 170 , and the first seal 110 and the second seal 170 respectively cover both end surfaces of the plate body 140 along the thickness direction.
[0049] like Figure 1As shown, the first seal 110 and the second seal 170 have the same structure, both of which are sealing rubber rings. The two end surfaces of the plate body 140 along the thickness direction are respectively provided with sealing rubber rings, and the sealing rubber rings are provided with through openings to avoid the first cavity opening 145, the second cavity opening 147 and the flow channel area 142. In this way, after the two plate bodies 140 are assembled, the sealing rubber rings can achieve a good sealing effect.
[0050] An electrode plate assembly according to another embodiment of the present invention includes the electrode plate 100 as described above.
[0051] The electrode plate assembly of this embodiment has the same beneficial effects as the electrode plate 100 described above relative to the prior art, and therefore will not be described in detail herein.
[0052] Optionally, the electrode plate assembly includes a plurality of electrode plates 100 assembled along the thickness direction of the plate body 140, and the first diversion region 141 and the second diversion region 143 of two adjacent plate bodies 140 are aligned, and at the end faces of the corresponding first diversion region and the second diversion region 143 facing each other, the third protrusion structure 141A of the first diversion region 141 and the sixth protrusion structure 143B of the second diversion region 143 are arranged facing each other along the thickness direction of the plate body 140.
[0053] like Figure 7 As shown, the two plate bodies 140 are assembled along the thickness direction of the plate bodies 140, for example, the Z-axis direction, that is, the two plate bodies 140 are arranged to overlap each other, at this time, the first flow-dividing regions 141 and the second flow-dividing regions 143 of the two plate bodies 140 are arranged in alignment, and at the end surfaces of the corresponding first flow-dividing regions 141 and the second flow-dividing regions 143 facing each other, the third protruding structure 141A of the first flow-dividing region 141 and the sixth protruding structure 143B of the second flow-dividing region 143 are arranged to face each other along the thickness direction of the plate body 140. In this way, after the two plate bodies 140 are assembled, the corresponding third protruding structure 141A and the sixth protruding structure 143B can clamp the anode gas diffusion layer 200, the membrane electrode 300 and the cathode gas diffusion layer 400.
[0054] Optionally, the electrode plate assembly further includes an anode gas diffusion layer 200 , a membrane electrode 300 and a cathode gas diffusion layer 400 , which are sequentially arranged between the two plate bodies 140 along the thickness direction of the plate body 140 .
[0055] like Figure 7 As shown, after the two plate bodies 140 are assembled, the anode gas diffusion layer 200, the membrane electrode 300 and the cathode gas diffusion layer 400 are sequentially arranged between the two plate bodies 140 along the thickness direction of the plate body 140, such as the Z-axis direction. In this way, when an electrolysis reaction occurs between the two plate bodies 140, gas diffusion is facilitated.
[0056] An electrolysis device according to another embodiment of the present invention comprises the electrode plate assembly as described above.
[0057] The electrolysis device of this embodiment has the same beneficial effects as the electrode plate 100 described above relative to the prior art, and therefore will not be described in detail herein.
[0058] The electrolysis device of this embodiment is used for pure water electrolysis to produce hydrogen, and its working process is as follows: in the electrolysis hydrogen production chamber of the electrolysis device, water enters the anode side of the plate body 140 through the first cavity 145 of the plate body 140, and flows to the first branch area 141, the flow area 142 and the second branch area 143 on the anode side through the anode inlet flow channel structure, and in this process, electrolysis reaction is carried out with the catalyst contact surface of the membrane electrode 300 to generate oxygen, and oxygen and deionized water are transferred together, and finally flows to another first cavity 145 through the anode inlet flow channel structure at the second branch area 143, and the effect is as follows: Figure 8 As shown. Water and hydrogen ions penetrate the membrane electrode 300 and flow to the cathode side of the other plate body, and combine with electrons to generate hydrogen. The hydrogen flows to the two second cavities 147 through the two cathode inlet flow channel structures. The effect is as follows: Fig. 9 shown.
[0059] The reader should understand that 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 utility model. 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 different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.
[0060] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.
Claims
1. An electrode plate, characterized in that: The invention comprises a plate body (140), an anode inlet flow channel structure and a cathode inlet flow channel structure, wherein the plate body (140) comprises a flow channel region (142), a first flow diversion region (141), a second flow diversion region (143), a first cavity (145) and a second cavity (147), and the first flow diversion region (141) and the second flow diversion region (143) are respectively arranged on opposite sides of the flow channel region (142); the plate body (140) at the flow channel region (142) is provided with a plurality of first convex structures (142A) and second convex structures (142B) arranged at intervals. The first protruding structure (142A) and the second protruding structure (142B) have protruding directions opposite to each other along the thickness direction of the plate body (140); the first protruding structure (142A) and the second protruding structure (142B) are respectively extended in the direction from the first diversion area (141) to the second diversion area (143); the plate body (140) at the first diversion area (141) is provided with a plurality of third protruding structures (141A) and fourth protruding structures (141B) arranged at intervals; The protruding directions of the third protruding structure (141A) and the fourth protruding structure (141B) are opposite to each other in the thickness direction of the plate body (140); the plate body (140) at the second diversion area (143) is provided with a plurality of fifth protruding structures (143A) and sixth protruding structures (143B) arranged at intervals; the protruding directions of the fifth protruding structure (143A) and the sixth protruding structure (143B) are opposite to each other in the thickness direction of the plate body (140); the first diversion area (141) and the second diversion area ( 143) is provided with the first cavity opening (145) and the second cavity opening (147) at intervals on the side away from the flow channel area (142); the anode inlet flow channel structure is provided between the first cavity opening (145) and the first flow dividing area (141) and between the first cavity opening (145) and the second flow dividing area (143); the cathode inlet flow channel structure is provided between the second cavity opening (147) and the first flow dividing area (141) and between the second cavity opening (147) and the second flow dividing area (143); The anode inlet flow channel structure comprises a first plate (130), a first stopper (120) and a first groove structure (144) arranged on the end surface of the plate body along the thickness direction, a portion of the plate body of the first plate (130) is bent along the thickness direction to form a plurality of first protrusions with a U-shaped cross section, the plurality of first protrusions are arranged at intervals, one end of the first plate (130) along the thickness direction is located in the first groove structure (144), and the first stopper (120) covers the other end of the first plate (130) along the thickness direction; The cathode inlet flow channel structure includes a second plate (150), a second baffle (160) and a second groove structure (146) arranged on the end face of the plate body along the thickness direction, part of the plate body of the second plate (150) is bent along the thickness direction to form a plurality of second protrusions with a U-shaped cross-section, and the plurality of second protrusions are arranged at intervals, one end of the second plate (150) along the thickness direction is located in the second groove structure (146), and the second baffle (160) covers the other end of the second plate (150) along the thickness direction.
2. The electrode plate according to claim 1, characterized in that: The first flow dividing area (141) and the second flow dividing area (143), the two first cavity openings (145) and the two second cavity openings (147) are rotationally symmetrical relative to the center of the plate body (140).
3. The electrode plate according to claim 2, characterized in that: The anode inlet flow channel structure and the cathode inlet flow channel structure are respectively located at two end surfaces of the plate body (140) along the thickness direction.
4. The electrode plate according to claim 1, characterized in that: It also includes a first seal (110) and a second seal (170), wherein the first seal (110) and the second seal (170) respectively cover both end surfaces of the plate body (140) along the thickness direction.
5. An electrode plate assembly, characterized in that: The invention comprises the electrode plate according to any one of claims 1 to 4.
6. The electrode plate assembly according to claim 5, characterized in that: It comprises a plurality of electrode plates assembled along the thickness direction of a plate body (140), wherein the first shunt region (141) and the second shunt region (143) of two adjacent plate bodies (140) are arranged in alignment, and at the end surfaces of the corresponding first shunt region (141) and the second shunt region (143) facing each other, the third protruding structure (141A) of the first shunt region (141) and the sixth protruding structure (143B) of the second shunt region (143) are arranged facing each other along the thickness direction of the plate body (140).
7. The electrode plate assembly according to claim 6, characterized in that: It also includes an anode gas diffusion layer (200), a membrane electrode (300) and a cathode gas diffusion layer (400), wherein the anode gas diffusion layer (200), the membrane electrode (300) and the cathode gas diffusion layer (400) are sequentially arranged between the two plate bodies (140) along the thickness direction of the plate bodies (140).
8. An electrolysis device, characterized in that: Comprising the electrode plate assembly according to any one of claims 5 to 7.