Electrolytic bath pole plate

Abstract

The invention provides an electrolytic bath pole plate, which belongs to the technical field of water electrolysis hydrogen production, and comprises a pole plate body, the front and back surfaces of the pole plate body are provided with a reaction zone and a cooling zone, and the reaction zone and the cooling zone are provided with a plurality of alternately spaced projection structures; a reactant inlet, an oxygen outlet and a hydrogen outlet which are communicated with the reaction area, and a first water gap and a second water gap which are communicated with the cooling area are formed in the periphery of the polar plate body. The front surfaces of the two polar plate bodies are oppositely arranged to form a small electrolysis chamber, and the back surfaces of the two polar plate bodies are oppositely arranged to form a cooling water flow field; the convex structure forms a cross mastoid-shaped flow channel, so that a water vapor flow field is uniformly distributed; the polar plate bodies are combined to form a two-plate three-field structural layout, a cooling water flow field is provided between the two small electrolysis chambers, reaction heat of the electrolysis cell is taken away in time, and stable reaction temperature is guaranteed. The electrolytic bath polar plate provided by the invention solves the problem that cooling anode circulating water is insufficient to effectively control the internal temperature of an electrolytic bath in the prior art.

Description

Technical Field

[0001] This invention relates to the field of water electrolysis for hydrogen production technology, and specifically to an electrode plate for an electrolyzer. Background Technology

[0002] In an electrolyzer, the electrode plate serves to support the cell body, separate the chambers, and provide gas-liquid channels. As the demand for hydrogen production increases, the power of electrolyzers is also expanding. The design of the electrode plate flow channel has a close impact on the water-gas distribution and temperature distribution of the electrolyzer. Designing high-performance electrode plates helps to promote the large-scale and mass production of domestically produced electrolyzers.

[0003] Electrode plates are typically designed as bipolar plates, made of metal materials, with anode and cathode on the front and back sides respectively. The flow channels are formed by etching, cutting, or stamping, as illustrated in patent 202510241630.6, "A Metal Composite Bipolar Plate and Its Processing Method and Application," where the flow channels are formed by stamping and then welded together, effectively reducing the material cost of electrolytic cell electrode plates. However, as proton exchange membrane water electrolyzers continue to develop towards larger sizes and higher current densities, the reaction area and flow field area of ​​the electrolyzer increase, leading to faster heat accumulation during operation and difficulty in heat dissipation. Currently, the commonly used industrial cooling method is to control the temperature by cooling the anode circulating water.

[0004] However, this method is insufficient to effectively control the temperature inside the electrolytic cell, making it difficult to determine the operating status of the electrolytic cell during actual production, which is detrimental to the normal operation and maintenance and safe production of the site. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the circulating water for cooling the anode is insufficient to effectively control the internal temperature of the electrolytic cell in the prior art, thereby providing an electrolytic cell electrode plate.

[0006] To solve the above-mentioned technical problems, the present invention provides an electrolytic cell electrode plate, comprising: an electrode plate body, a reaction zone disposed on the reaction side of the front side of the electrode plate body, a cooling zone disposed on the cooling side of the back side of the electrode plate body, the reaction zone and the cooling zone being disposed opposite to each other, and both the reaction zone and the cooling zone having a plurality of alternately spaced protrusions; a reactant inlet, an oxygen outlet, a hydrogen outlet, a first water inlet and a second water inlet are disposed around the periphery of the electrode plate body, the reactant inlet, the oxygen outlet and the hydrogen outlet being connected to the reaction zone on the front side of the electrode plate body, and the first water inlet and the second water inlet being connected to the cooling zone.

[0007] In use, the two electrode bodies are placed face-to-face, and the two reaction zones are merged to form an electrolysis chamber. A porous transport layer, a catalyst layer, and a diaphragm are placed in the chamber, dividing it into an anode reaction zone and a cathode reaction zone. The electrolyte enters through the reactant inlet, and the oxygen generated at the anode and unreacted electrolyte exit through the oxygen outlet. The hydrogen generated at the cathode exits through the hydrogen outlet. The raised structure forms a cross-shaped nipple-shaped flow channel, which ensures a uniform distribution of water vapor flow within the electrolysis chamber, guaranteeing the normal operation of the reaction. The two electrode bodies are placed face-to-face with their opposite sides, and the two cooling zones are merged to form a cooling water flow field. During the reaction, cooling water enters the cooling water flow field from the first inlet. The raised structure in the cooling water flow field ensures a uniform distribution of cooling water, cooling the electrolytic cell reaction. After heat exchange, the water exits from the second inlet. The raised structure facilitates the uniform distribution of cooling water. The electrode plates, arranged in a two-plate, three-field structure, provide a cooling water flow field between the two electrolysis chambers. This effectively removes heat from the electrolytic cell, optimizes heat exchange within the cell, ensures stable reaction temperature, and improves cell performance. The electrode plates provided by this invention solve the problem in existing technologies where the circulating water for cooling the anode is insufficient to effectively control the internal temperature of the electrolytic cell.

[0008] Optionally, the protrusion structure is formed by stamping on the electrode body. By stamping the protrusion structure on the electrode body as described above, the material consumption of the electrode body can be reduced, thus lowering processing costs.

[0009] Optionally, the electrode body includes: an anode electrode plate, wherein a first reaction zone is provided on the reaction side of the anode electrode plate, the first reaction zone being connected to the reactant inlet and the oxygen outlet, and a first cooling zone is provided on the cooling side of the anode electrode plate, the first cooling zone being connected to the first water inlet and the second water inlet; and a cathode electrode plate, wherein a second reaction zone is provided on the reaction side of the cathode electrode plate, the second reaction zone being connected to the hydrogen outlet, and a second cooling zone is provided on the cooling side of the cathode electrode plate, the second cooling zone being connected to the first water inlet and the second water inlet. With the above configuration, the reaction sides of the anode plate and the cathode plate are placed opposite each other. The first reaction zone and the second reaction zone are combined to form an electrolysis chamber. A porous transport layer, a catalyst layer, and a diaphragm are placed between the first reaction zone and the second reaction zone. The electrolyte enters the first reaction zone through the reactant inlet to start the reaction. The generated oxygen and unreacted water are output from the oxygen outlet. The second reaction zone on the other side of the diaphragm is filled with hydrogen gas after the reaction and is output from the hydrogen outlet. The cooling sides of the anode plate and the cathode plate are placed opposite each other. The first cooling zone and the second cooling zone are combined to form a cooling water flow field. During the reaction, cooling water enters the cooling water flow field from the first water outlet to cool the reaction in the electrolysis chamber. After the heat exchange is completed, the cooling water leaves from the second water outlet.

[0010] Optionally, the electrode body is provided with a plurality of first protrusion structures and second protrusion structures, wherein the first protrusion structures are formed concavely in the first cooling zone, and the second protrusion structures are formed concavely in the first reaction zone, and the first protrusion structures and the second protrusion structures are alternately arranged; the electrode body is provided with a plurality of third protrusion structures and fourth protrusion structures, wherein the third protrusion structures are formed concavely in the second reaction zone, and the fourth protrusion structures are formed concavely in the second cooling zone, and the third protrusion structures and the fourth protrusion structures are alternately arranged. With the above configuration, the first, second, third, and fourth protruding structures are formed by stamping and recessing on the electrode body, which can reduce the consumption of electrode body material and reduce processing costs. The first reaction zone and the first cooling zone each have several alternating first and second protruding structures, and the second reaction zone and the second cooling zone each have several alternating third and fourth protruding structures. In the electrolysis chamber formed by the merger of the first and second reaction zones and the cooling water flow field formed by the first and second cooling zones, cross-shaped nipple-shaped flow channels can be formed, so that the water vapor in the flow field is evenly distributed, ensuring the normal reaction in the electrolysis chamber. The cooling water flow field removes the heat of electrolysis reaction in time, optimizes heat exchange efficiency, ensures stable reaction temperature, and improves the operating performance of the electrolytic cell.

[0011] Optionally, the first, second, third, and fourth protruding structures have equal heights and equal spacing. This configuration creates uniform, intersecting, nipple-shaped flow channels, resulting in a uniform distribution of water vapor in the flow field.

[0012] Optionally, the reactant inlet and the oxygen outlet are positioned opposite each other on opposite sides of the first reaction zone. This arrangement allows the electrolyte to enter from one side of the first reaction zone and exit from the other, ensuring normal operation of the electrolytic cell.

[0013] Optionally, the reaction side of the anode plate is provided with a first distribution zone and a second distribution zone. The first distribution zone connects the first reaction zone and the reactant inlet, and the second distribution zone connects the first reaction zone and the oxygen outlet. Multiple diversion protrusions are provided within the first and second distribution zones. Through this arrangement, the electrolyte entering the reactant inlet is guided into the first reaction zone via the first distribution zone. The oxygen generated after the reaction and the unreacted electrolyte are guided out through the oxygen outlet via the second distribution zone. The diversion protrusions in the first and second distribution zones can increase flow field disturbance, reduce fluid velocity, and protect the structure of the electrode plate body.

[0014] Optionally, the hydrogen outlet includes a first hydrogen outlet and a second hydrogen outlet, which are arranged diagonally opposite each other. This arrangement allows the diagonally positioned first and second hydrogen outlets to rapidly discharge hydrogen from both ends of the second reaction zone.

[0015] Optionally, the reaction side of the cathode plate is provided with a third distribution zone and a fourth distribution zone. The third distribution zone connects the second reaction zone and the first hydrogen outlet, and the fourth distribution zone connects the second reaction zone and the second hydrogen outlet. Multiple flow-diverting protrusions are provided within the third and fourth distribution zones. Through this arrangement, the hydrogen generated by the electrolysis reaction is guided through the third and fourth distribution zones and discharged through the first and second hydrogen outlets. The flow-diverting protrusions within the third and fourth distribution zones can increase flow field disturbance, reduce fluid velocity, and protect the structure of the electrode plate body.

[0016] Optionally, the first and second water inlets are arranged opposite each other on both sides of the first or second cooling zone. This arrangement allows cooling water to enter from one side of the cooling water flow field and exit from the other, thus optimizing the cooling effect.

[0017] Optionally, the cooling side of the anode plate is provided with a first diffusion zone and a second diffusion zone, the first diffusion zone connecting the first cooling zone and the first water inlet, and the second diffusion zone connecting the first cooling zone and the second water inlet; the cooling side of the cathode plate is provided with a third diffusion zone and a fourth diffusion zone, the third diffusion zone connecting the second cooling zone and the first water inlet, and the fourth diffusion zone connecting the second cooling zone and the second water inlet; flow-diverting protrusions are provided in the first diffusion zone, the second diffusion zone, the third diffusion zone, and the fourth diffusion zone. Through the above arrangement, the first cooling zone and the second cooling zone merge to form a cooling water flow field. Cooling water entering from the first water inlet is guided into the cooling water flow field through the first and third diffusion zones. After heat exchange, the cooling water is guided out of the second water inlet through the second and fourth diffusion zones. The flow-diverting protrusions in the first, second, third, and fourth diffusion zones add inlet and outlet disturbances, reducing the fluid velocity and uniformly distributing the cooling fluid.

[0018] Optionally, sealing strips are provided circumferentially on the reaction side of the electrode body for both the first and second water inlets, and sealing strips are provided circumferentially on the cooling side of the electrode body for the reactant inlet, oxygen outlet, and hydrogen outlet. With these features, when two adjacent electrode bodies are connected, the circumferential sealing strips of the first and second water inlets prevent cooling water from entering the first and second reaction zones, and the circumferential sealing strips of the reactant inlet, oxygen outlet, and hydrogen outlet prevent electrolyte leakage. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of one embodiment of the reaction side of the anode plate in the electrolytic cell provided in this invention. Figure 2 for Figure 1 Schematic diagram of the cooling side of the anode plate; Figure 3 This is one embodiment of the cathode electrode reaction side in the electrolytic cell provided in this invention. Figure 4 for Figure 3 A schematic diagram of the cooling side of the middle cathode plate.

[0021] Explanation of reference numerals in the attached figures: 1. Anode plate; 2. First reaction zone; 3. First cooling zone; 4. Cathode plate; 5. Second reaction zone; 6. Second cooling zone; 7. Reactant inlet; 8. Oxygen outlet; 9. First hydrogen outlet; 10. Second hydrogen outlet; 11. First water inlet; 12. Second water inlet; 13. First protruding structure; 14. Second protruding structure; 15. Third protruding structure; 16. Fourth protruding structure; 17. First distribution zone; 18. Second distribution zone; 19. Third distribution zone; 20. Fourth distribution zone; 21. First diffusion zone; 22. Second diffusion zone; 23. Third diffusion zone; 24. Fourth diffusion zone. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0025] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] This embodiment provides an electrolytic cell electrode structure for effectively controlling the internal temperature of an electrolytic cell, which serves to support the cell body, separate the cells, and provide gas-liquid channels within the electrolytic cell.

[0027] like Figure 1-4 The diagram illustrates a specific implementation of an electrolytic cell electrode plate provided in this embodiment, comprising: an electrode plate body; a reaction zone is provided on the reaction side of the front side of the electrode plate body; a cooling zone is provided on the cooling side of the back side of the electrode plate body; the reaction zone and the cooling zone are arranged opposite to each other; both the reaction zone and the cooling zone have multiple alternating protrusions; a reactant inlet 7, an oxygen outlet 8, a hydrogen outlet, a first water inlet 11, and a second water inlet 12 are provided around the electrode plate body; the reactant inlet 7, the oxygen outlet 8, and the hydrogen outlet are connected to the reaction zone on the front side of the electrode plate body; and the first water inlet 11 and the second water inlet 12 are connected to the cooling zone.

[0028] In use, the two electrode bodies are placed face-to-face, and the two reaction zones are merged to form an electrolysis chamber. A porous transport layer, a catalyst layer, and a diaphragm are placed in the chamber, dividing it into an anode reaction zone and a cathode reaction zone. The electrolyte enters through the reactant inlet 7. Oxygen generated at the anode and unreacted electrolyte are output from the oxygen outlet 8, and hydrogen generated at the cathode is output from the hydrogen outlet. The protruding structure forms a cross-shaped nipple-shaped flow channel, which ensures a uniform distribution of water vapor flow within the electrolysis chamber, guaranteeing the normal operation of the reaction. The two electrode bodies are placed face-to-face, and the two cooling zones are merged to form a cooling water flow field. During the reaction, cooling water enters the cooling water flow field from the first inlet 11. The protruding structure in the cooling water flow field ensures a uniform distribution of cooling water, cooling the electrolytic cell reaction. After heat exchange, the water exits from the second inlet 12. The electrode plates, combined to form a two-plate, three-field structure, provide a cooling water flow field between the two electrolysis chambers. This effectively removes heat from the electrolytic cell, optimizes heat exchange within the cell, ensures stable reaction temperatures, and improves cell performance. The electrode plates provided in this embodiment solve the problem in existing technologies where the circulating water for cooling the anode is insufficient to effectively control the internal temperature of the electrolytic cell.

[0029] like Figure 1-4 As shown, in the electrolytic cell electrode plate provided in this embodiment, the protruding structure is formed by stamping on the electrode plate body. Stamping the protruding structure on the electrode plate body reduces material consumption and lowers processing costs. Alternatively, as an alternative implementation, the protruding structure can also be a solid structure welded to the electrode plate body.

[0030] like Figure 1-4As shown, in the electrolytic cell electrode plate provided in this embodiment, the electrode plate body includes: an anode electrode plate 1, the reaction side of the anode electrode plate 1 is provided with a first reaction zone 2, the first reaction zone 2 is connected to the reactant inlet 7 and the oxygen outlet 8, the cooling side of the anode electrode plate 1 is provided with a first cooling zone 3, the first cooling zone 3 is connected to the first water inlet 11 and the second water inlet 12; and a cathode electrode plate 4, the reaction side of the cathode electrode plate 4 is provided with a second reaction zone 5, the second reaction zone 5 is connected to the hydrogen outlet, the cooling side of the cathode electrode plate 4 is provided with a second cooling zone 6, the second cooling zone 6 is connected to the first water inlet 11 and the second water inlet 12. The reaction side of the anode plate 1 and the reaction side of the cathode plate 4 are placed opposite each other. The first reaction zone 2 and the second reaction zone 5 are combined to form an electrolysis chamber. A porous transport layer, a catalyst layer and a diaphragm are placed between the first reaction zone 2 and the second reaction zone 5. The electrolyte enters the first reaction zone 2 through the reactant inlet 7 to start the reaction. The generated oxygen and unreacted water are output from the oxygen outlet 8. The second reaction zone 5 on the other side of the diaphragm is filled with hydrogen gas after the reaction and is output from the hydrogen outlet. The cooling side of the anode plate 1 and the cooling side of the cathode plate 4 are placed opposite each other. The first cooling zone 3 and the second cooling zone 6 are combined to form a cooling water flow field. During the reaction, cooling water enters the cooling water flow field from the first water outlet 11 to cool the reaction in the electrolysis chamber. After the heat exchange is completed, the cooling water leaves from the second water outlet 12.

[0031] like Figure 1-4As shown, in the electrolytic cell electrode plate provided in this embodiment, the electrode plate body is provided with a plurality of first protrusion structures 13 and second protrusion structures 14. The first protrusion structure 13 is formed concavely in the first cooling zone 3, and the second protrusion structure 14 is formed concavely in the first reaction zone 2. The first protrusion structure 13 and the second protrusion structure 14 are alternately arranged. The electrode plate body is provided with a plurality of third protrusion structures 15 and fourth protrusion structures 16. The third protrusion structure 15 is formed concavely in the second reaction zone 5, and the fourth protrusion structure 16 is formed concavely in the second cooling zone 6. The third protrusion structure 15 and the fourth protrusion structure 16 are alternately arranged. The first protrusion structure 13, the second protrusion structure 14, the third protrusion structure 15, and the fourth protrusion structure 16 are formed by stamping and recessing on the electrode plate body, which can reduce the material consumption of the electrode plate body and reduce processing costs. The first reaction zone 2 and the first cooling zone 3 each have several alternating first protrusion structures 13 and second protrusion structures 14, and the second reaction zone 5 and the second cooling zone 6 each have several alternating third protrusion structures 15 and fourth protrusion structures 16. In the electrolysis chamber formed by the merger of the first reaction zone 2 and the second reaction zone 5 and the cooling water flow field formed by the first cooling zone 3 and the second cooling zone 6, cross-shaped nipple-shaped flow channels can be formed, so that the water vapor in the flow field is evenly distributed, ensuring that the reaction in the electrolysis chamber proceeds normally. The cooling water flow field removes the heat of the electrolysis reaction in time, optimizes the heat exchange efficiency, ensures a stable reaction temperature, and improves the operating performance of the electrolytic cell.

[0032] Specifically, when the anode plate 1 and the cathode plate 4 are connected, the first protrusion is directly opposite the third protrusion, and the second protrusion is directly opposite the fourth protrusion.

[0033] like Figure 1-4 As shown, in the electrolytic cell electrode plate provided in this embodiment, the first protrusion structure 13, the second protrusion structure 14, the third protrusion structure 15, and the fourth protrusion structure 16 have equal heights and equal spacing. This forms a uniform, cross-shaped flow channel, resulting in a uniform distribution of water vapor in the flow field.

[0034] like Figure 1 As shown, in the electrolytic cell electrode plate provided in this embodiment, the reactant inlet 7 and the oxygen outlet 8 are arranged opposite each other on both sides of the first reaction zone 2. The opposite arrangement of the reactant inlet 7 and the oxygen outlet 8 allows the electrolyte to enter from one side of the first reaction zone 2 and exit from the other side, ensuring the normal reaction of the electrolytic cell.

[0035] like Figure 1As shown, in the electrolytic cell electrode plate provided in this embodiment, the reaction side of the anode electrode plate 1 is provided with a first distribution zone 17 and a second distribution zone 18. The first distribution zone 17 connects the first reaction zone 2 and the reactant inlet 7, and the second distribution zone 18 connects the first reaction zone 2 and the oxygen outlet 8. Multiple diversion protrusions are provided in the first distribution zone 17 and the second distribution zone 18. The electrolyte entering the reactant inlet 7 is guided into the first reaction zone 2 through the first distribution zone 17. The oxygen generated after the reaction and the unreacted electrolyte are guided out through the second distribution zone 18 and output through the oxygen outlet 8. The diversion protrusions in the first distribution zone 17 and the second distribution zone 18 can increase the disturbance of the flow field, reduce the fluid velocity, and protect the structure of the electrode plate body.

[0036] like Figure 3 As shown, in the electrolytic cell electrode plate provided in this embodiment, the hydrogen outlet includes a first hydrogen outlet 9 and a second hydrogen outlet 10, which are arranged diagonally. The diagonally arranged first hydrogen outlet 9 and second hydrogen outlet 10 allow hydrogen in the second reaction zone 5 to be rapidly discharged from both ends. Alternatively, as an alternative implementation, the hydrogen outlet may be a single outlet.

[0037] like Figure 3 As shown, in the electrolytic cell electrode plate provided in this embodiment, the reaction side of the cathode electrode plate 4 is provided with a third distribution zone 19 and a fourth distribution zone 20. The third distribution zone 19 connects the second reaction zone 5 and the first hydrogen outlet 9, and the fourth distribution zone 20 connects the second reaction zone 5 and the second hydrogen outlet 10. Multiple flow-diverting protrusions are provided within the third distribution zone 19 and the fourth distribution zone 20. The hydrogen generated by the electrolysis reaction is guided by the third distribution zone 19 and the fourth distribution zone 20 and discharged through the first hydrogen outlet 9 and the second hydrogen outlet 10. The flow-diverting protrusions within the third distribution zone 19 and the fourth distribution zone 20 can increase the disturbance of the flow field, reduce the fluid velocity, and protect the structure of the electrode plate body.

[0038] like Figure 3 As shown, in the electrolytic cell electrode plate provided in this embodiment, the first water inlet 11 and the second water inlet 12 are arranged opposite to each other on both sides of the first cooling zone 3 or the second cooling zone 6. The opposite arrangement of the first water inlet 11 and the second water inlet 12 allows cooling water to enter from one side of the cooling water flow field and exit from the other side, which is beneficial to optimizing the cooling effect.

[0039] like Figure 2 , Figure 4As shown, in the electrolytic cell electrode plates provided in this embodiment, the cooling side of the anode electrode plate 1 is provided with a first diffusion region 21 and a second diffusion region 22. The first diffusion region 21 connects the first cooling region 3 and the first water inlet 11, and the second diffusion region 22 connects the first cooling region 3 and the second water inlet 12. The cooling side of the cathode electrode plate 4 is provided with a third diffusion region and a fourth diffusion region. The third diffusion region connects the second cooling region 6 and the first water inlet 11, and the fourth diffusion region connects the second cooling region 6 and the second water inlet 12. Diverting protrusions are provided in the first diffusion region 21, the second diffusion region 22, the third diffusion region, and the fourth diffusion region. The first cooling zone 3 and the second cooling zone 6 merge to form a cooling water flow field. The cooling water entering from the first inlet 11 is guided into the cooling water flow field through the first diffusion zone 21 and the third diffusion zone. After the cooling water completes heat exchange, it is guided to leave from the second inlet 12 through the second diffusion zone 22 and the fourth diffusion zone. The diversion protrusions in the first diffusion zone 21, the second diffusion zone 22, the third diffusion zone and the fourth diffusion zone add inlet and outlet disturbances to reduce the fluid velocity and distribute the cooling fluid evenly.

[0040] like Figure 1-4 As shown, in the electrolytic cell electrode plate provided in this embodiment, sealing strips are provided circumferentially on the reaction side of the electrode plate body for the first water inlet 11 and the second water inlet 12, and sealing strips are provided circumferentially on the cooling side of the electrode plate body for the reactant inlet 7, the oxygen outlet 8, and the hydrogen outlet. When two adjacent electrode plates are connected, the sealing strips circumferentially on the first water inlet 11 and the second water inlet 12 can prevent cooling water from entering the first reaction zone 2 and the second reaction zone 5, and the sealing strips circumferentially on the reactant inlet 7, the oxygen outlet 8, and the hydrogen outlet can prevent electrolyte leakage.

[0041] How to use: like Figure 1-4As shown, in this embodiment, the electrolytic cell electrode plates are placed with their front sides facing each other, and the two reaction zones are merged to form an electrolytic chamber. A porous transport layer, a catalyst layer, and a diaphragm are placed in the chamber, dividing it into an anode reaction zone and a cathode reaction zone. The electrolyte enters through the reactant inlet 7, and the oxygen generated at the anode and unreacted electrolyte are output from the oxygen outlet 8. The hydrogen generated at the cathode is output from the hydrogen outlet. The protruding structure forms a cross-shaped nipple-shaped flow channel, which makes the water vapor flow field in the electrolytic cell uniformly distributed, ensuring the normal reaction in the electrolytic cell. The back sides of the two electrode plates are placed facing each other, and the two cooling zones are merged to form a cooling water flow field. During the reaction, cooling water enters the cooling water flow field from the first water inlet 11. The protruding structure in the cooling water flow field makes the cooling water uniformly distributed, cooling the electrolytic cell reaction. After heat exchange is completed, the cooling water leaves from the second water inlet 12.

[0042] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An electrolytic cell electrode plate, characterized in that, include: The electrode body has a reaction zone on the front side and a cooling zone on the back side. The reaction zone and the cooling zone are arranged opposite to each other, and both the reaction zone and the cooling zone have multiple alternating protrusions. The electrode body is provided with a reactant inlet (7), an oxygen outlet (8), a hydrogen outlet, a first water inlet (11), and a second water inlet (12) around its perimeter. The reactant inlet (7), the oxygen outlet (8), and the hydrogen outlet are connected to the reaction zone on the front of the electrode body. The first water inlet (11) and the second water inlet (12) are connected to the cooling zone.

2. The electrolytic cell electrode plate according to claim 1, characterized in that, The protruding structure is formed by stamping on the electrode plate body.

3. The electrolytic cell electrode plate according to claim 1, characterized in that, The electrode body includes: The anode plate (1) has a first reaction zone (2) on its reaction side, which is connected to the reactant inlet (7) and the oxygen outlet (8). The anode plate (1) has a first cooling zone (3) on its cooling side, which is connected to the first water outlet (11) and the second water outlet (12). The cathode plate (4) has a second reaction zone (5) on its reaction side, which is connected to the hydrogen outlet. The cathode plate (4) also has a second cooling zone (6) on its cooling side, which is connected to the first water inlet (11) and the second water inlet (12).

4. The electrolytic cell electrode plate according to claim 3, characterized in that, The electrode plate body is provided with a plurality of first protrusion structures (13) and second protrusion structures (14). The first protrusion structure (13) is formed in the first cooling zone (3), and the second protrusion structure (14) is formed in the first reaction zone (2). The first protrusion structure (13) and the second protrusion structure (14) are alternately arranged. The electrode body is provided with a plurality of third protrusion structures (15) and fourth protrusion structures (16). The third protrusion structure (15) is formed in the second reaction zone (5), and the fourth protrusion structure (16) is formed in the second cooling zone (6). The third protrusion structure (15) and the fourth protrusion structure (16) are arranged alternately.

5. The electrolytic cell electrode plate according to claim 4, characterized in that, The first protrusion structure (13), the second protrusion structure (14), the third protrusion structure (15) and the fourth protrusion structure (16) have the same height and the same spacing.

6. The electrolytic cell electrode plate according to claim 3, characterized in that, The reactant inlet (7) and the oxygen outlet (8) are positioned opposite each other on both sides of the first reaction zone (2).

7. The electrolytic cell electrode plate according to claim 6, characterized in that, The anode plate (1) is provided with a first distribution zone (17) and a second distribution zone (18) on the reaction side. The first distribution zone (17) is connected to the first reaction zone (2) and the reactant inlet (7). The second distribution zone (18) is connected to the first reaction zone (2) and the oxygen outlet (8). Multiple diversion protrusions are provided in the first distribution zone (17) and the second distribution zone (18).

8. The electrolytic cell electrode plate according to claim 3, characterized in that, The hydrogen outlet includes a first hydrogen outlet (9) and a second hydrogen outlet (10), which are arranged diagonally.

9. The electrolytic cell electrode plate according to claim 8, characterized in that, The cathode plate (4) is provided with a third distribution zone (19) and a fourth distribution zone (20) on the reaction side. The third distribution zone (19) is connected to the second reaction zone (5) and the first hydrogen outlet (9). The fourth distribution zone (20) is connected to the second reaction zone (5) and the second hydrogen outlet (10). Multiple diversion protrusions are provided in the third distribution zone (19) and the fourth distribution zone (20).

10. The electrolytic cell electrode plate according to claim 3, characterized in that, The first water inlet (11) and the second water inlet (12) are arranged opposite each other on both sides of the first cooling zone (3) or the second cooling zone (6).

11. The electrolytic cell electrode plate according to claim 10, characterized in that, The anode plate (1) is provided with a first diffusion region (21) and a second diffusion region (22) on the cooling side. The first diffusion region (21) connects the first cooling region (3) and the first water inlet (11), and the second diffusion region (22) connects the first cooling region (3) and the second water inlet (12). The cathode plate (4) is provided with a third diffusion region and a fourth diffusion region on its cooling side. The third diffusion region connects the second cooling region (6) and the first water inlet (11), and the fourth diffusion region connects the second cooling region (6) and the second water inlet (12). Diversion protrusions are provided in the first diffusion zone (21), the second diffusion zone (22), the third diffusion zone and the fourth diffusion zone.

12. The electrolytic cell electrode plate according to any one of claims 1-11, characterized in that, The first water inlet (11) and the second water inlet (12) are both provided with sealing strips on the reaction side of the electrode body in the circumferential direction, and the reactant inlet (7), oxygen outlet (8) and hydrogen outlet are all provided with sealing strips on the cooling side of the electrode body in the circumferential direction.

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