PEM electrolytic cell capable of being positioned close to side

Abstract

The utility model relates to the technical field of hydrogen energy preparation, in particular to a PEM electrolytic bath capable of being positioned close to the edge, which comprises an upper end plate, a lower end plate and a polar plate group positioned between the upper end plate and the lower end plate, and the polar plate group comprises an anode plate, a cathode plate and a bipolar plate, a plurality of groups of bipolar plates which are stacked are arranged between the anode surface of the anode plate and the cathode surface of the cathode plate, two surfaces of each bipolar plate are respectively a cathode surface and an anode surface, and membrane electrodes are arranged between the adjacent bipolar plates and between the bipolar plates and the anode plate as well as between the bipolar plates and the cathode plate; positioning blocks are arranged on the outer edge of the polar plate group, the positioning blocks are distributed on the periphery of the polar plate group in the circumferential direction, each positioning block is of an L-shaped structure, and the polar plate group and the membrane electrode are positioned through the positioning blocks during installation; compared with the prior art, the positioning structure of the polar plate assembly is optimized, the assembly process can be more accurate and convenient, the stability of the electrolytic bath in the test process is ensured, and the service life of the polar plate is prolonged.

Description

[Technical field]

[0001] The utility model relates to the technical field of hydrogen energy preparation, in particular to a PEM electrolyzer positioned on the side. [Background Technology]

[0002] As the global demand for environmentally friendly energy increases, hydrogen energy as a clean, efficient and renewable energy source has received more and more attention. Hydrogen energy can be obtained through various channels such as primary energy, secondary energy and industrial fields. It has the advantages of high calorific value, easy storage and renewability. It can be widely used in industry, construction, transportation and power industry. It is an important carrier for building a diversified energy supply system dominated by clean energy in the future. Continuously improving the technical level of hydrogen energy development and utilization is an important direction for the new round of world energy technology changes. In the process of hydrogen energy preparation, proton exchange membrane (PEM) water electrolysis technology has also received more and more attention. This technology has the characteristics of high equipment integration, high hydrogen production rate, low energy consumption, safety and environmental protection, high hydrogen production purity and high hydrogen production pressure. It can adapt to the volatility of renewable energy generation and is easy to combine with renewable energy consumption. It is an ideal technical solution for direct coupling of wind, solar and hydropower to produce hydrogen in the future.

[0003] PEM water electrolysis hydrogen production technology is a technology that produces hydrogen from water. Simply put, it is to decompose water into hydrogen and oxygen through a series of electrochemical reactions. At present, the research on PEM water electrolysis hydrogen production technology mainly focuses on improving electrolysis efficiency and reducing costs. The main research focus on reducing costs is the improvement of electrolyzers. Existing products that use pin positioning methods for plates and membrane electrodes are not convenient in the assembly process and have low efficiency. [Contents of the utility model]

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a PEM electrolyzer with edge positioning, which can be more accurate and convenient during the assembly process, ensure the stability of the electrolyzer during testing, and increase the life of the electrode plate.

[0005] In order to achieve the above-mentioned purpose, a PEM electrolyzer positioned close to the edge is designed, comprising an upper end plate 5, a lower end plate 3 and a plate group 10 located between the upper end plate 5 and the lower end plate 3, wherein the plate group 10 comprises an anode plate 1001, a cathode plate 1003 and a bipolar plate 1002, a plurality of stacked groups of bipolar plates 1002 are arranged between the anode surface of the anode plate 1001 and the cathode surface of the cathode plate 1003, the two sides of the bipolar plate 1002 are the cathode surface and the anode surface respectively, and membrane electrodes 14 are arranged between adjacent bipolar plates 1002 and between the bipolar plates 1002 and the anode plates 1001 and the cathode plates 1003; positioning blocks 12 are arranged on the outer edge of the plate group 10, the positioning blocks 12 are distributed circumferentially on the periphery of the plate group 10, the positioning blocks 12 are L-shaped, and the plate group 10 and the membrane electrode 14 are positioned by the positioning blocks 12 during installation.

[0006] Furthermore, a circle of avoidance grooves A09 is processed on the outer edge of the cathode surface and / or the anode surface of the electrode assembly 10, and the avoidance grooves A09 are used to prevent the cathode surface from contacting the anode surface during the test process.

[0007] Furthermore, the anode surface of the anode plate 1001 is engraved with flow channel 1, and the flow channel 1 provides a channel for hydrogen generated by water electrolysis to flow out; the cathode surface of the cathode plate 1003 is engraved with flow channel 2, and the flow channel 2 provides water for water electrolysis; the cathode surface and anode surface of the bipolar plate 1002 are respectively engraved with flow channels, the flow channel on the cathode surface provides water for water electrolysis, and the flow channel on the anode surface provides a channel for hydrogen to flow out.

[0008] Furthermore, the positioning block 12 is mounted on the lower end plate 3 , one side of the right-angled side of the positioning block 12 is fixedly connected to the lower end plate 3 , and the other side of the right-angled side of the positioning block 12 is in contact with and connected to the electrode assembly 10 .

[0009] Furthermore, the two sides of one right-angled side of the electrode group 10 are set as reference positioning sides A07, the two sides of the other right-angled side of the electrode group 10 are set as auxiliary positioning sides A08, the positioning block 12 includes a reference positioning block and an auxiliary positioning block, the reference positioning block is cooperatively connected with the reference positioning side A07, and the auxiliary positioning block is cooperatively connected with the auxiliary positioning side A08.

[0010] Furthermore, a joint connecting plate 1 is installed on the lower end plate 3, and the joint connecting plate 1 is symmetrically arranged on the left and right. The joint connecting plate 1 on one side is sealed with a chuck joint 101 and a chuck joint 2 102, and the joint connecting plate 1 on the other side is sealed with a chuck joint 3 103 and a chuck joint 4 104. The chuck joint 1 101, the chuck joint 2 102, the chuck joint 3 103 and the chuck joint 4 104 are all used for quick connection of the test bench.

[0011] Furthermore, the upper end plate 5 and the lower end plate 3 are both connected with disc springs 6 through bolts 7 and nuts 2. The disc springs 6 are evenly distributed along the circumference. The disc springs 6 are used to offset the plastic deformation of the seal during the test.

[0012] Furthermore, an insulating plate 18 is provided between the electrode group 10 and the lower end plate 3, and the insulating plate 18 is used to isolate the electrode group 10 from contact with the lower end plate 3 to prevent leakage. An insulating plate 2 11 is provided between the electrode group 10 and the upper end plate 5, and the insulating plate 2 11 is used to isolate the electrode group 10 from contact with the upper end plate 5 to prevent leakage.

[0013] Furthermore, the upper and lower ends of the electrode group 10 are respectively connected to a current collecting plate 2 13 and a current collecting plate 1 4, and the current collecting plate 2 13 and the current collecting plate 1 4 are used to connect the positive or negative pole of the power supply. One side of the electrode group 10 is connected to a patrol device 9, and the patrol device 9 is used to monitor the electrode.

[0014] Furthermore, the anode surface of the electrode group 10 is provided with a hydrogen outlet A01, a hydrogen outlet A02 and an anode surface A03 of the electrode plate, and the anode surface A03 of the electrode plate provides a channel for the generated hydrogen. The hydrogen outlet A01 and the hydrogen outlet A02 are connected to the inner hole of the chuck joint 101, the inner hole of the chuck joint 3 103 and the flow channel of the anode surface A03 of the electrode plate; the cathode surface of the electrode group 10 is provided with a water inlet A04, a water outlet A05 and a cathode surface A06 of the electrode plate, and the cathode surface A06 of the electrode plate 06 provides water for water electrolysis, the water inlet A04 connects the inner hole of the chuck joint four 104 and the flow channel A06 on the cathode surface of the electrode plate, the water outlet A05 connects the inner hole of the chuck joint two 102 and the flow channel A06 on the cathode surface of the electrode plate; the membrane electrode 14 is provided with a water inlet A10, a hydrogen inlet A11, a hydrogen inlet A12 and a water inlet A13, the water inlet A10, the hydrogen inlet A11, the hydrogen inlet A12 and the water inlet A13 are all holes reserved by the membrane electrode 14 for water to pass through.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] (1) The utility model provides a PEM electrolyzer used in the hydrogen energy industry to decompose water into hydrogen and oxygen, and its positioning structure is improved to ensure the stability of the electrolyzer during testing;

[0017] (2) The outer edges of the cathode and anode surfaces of the electrode plates of the utility model adopt a avoidance design (avoidance on one side also has the same effect), which can completely avoid the contact between the cathode and anode surfaces during the test, and can make the size of the membrane electrode of the electrolytic cell consistent with the size of the electrode plate;

[0018] (3) The utility model uses two sides of the right angle side as reference for positioning during the positioning and installation process, and the other two sides are adjusted as auxiliary positioning. This design has high positioning accuracy and flexible operation in actual assembly;

[0019] (4) The utility model can avoid errors caused by repeated assembly during the test process, and adopting such a fixing structure can improve the stability and service life of the electrode plate;

[0020] (5) The positioning method of the utility model is also applicable to the plate structure of a fuel cell stack. A variation of the structure includes making a avoidance only on the cathode surface or the anode surface of the plate, which can also be achieved;

[0021] In summary, the utility model optimizes the positioning structure of the plate assembly, which can be more precise and convenient during the assembly process, ensures the stability during the electrolyzer testing process, and improves the life of the plate; and the plate assembly positioning method optimized by the utility model also has the same effect when applied to fuel cell stacks. [Drawings]

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the flow direction of the water channel of the utility model;

[0024] Figure 3 This is a schematic diagram of the hydrogen channel flow direction of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the pole plate group of the utility model;

[0026] Figure 5 This is a schematic diagram of the flow direction of the anode surface of the utility model;

[0027] Figure 6 This is a schematic diagram of the cathode surface flow direction of the utility model;

[0028] Figure 7 This is a schematic diagram of the membrane electrode structure of the electrolytic cell of the utility model;

[0029] Figure 8 This is a schematic diagram of the pole plate avoidance design of the utility model;

[0030] Fig. 9 This is the distribution diagram of the positioning blocks of the utility model;

[0031] In the figure: 1, joint connecting plate 2, nut 3, lower end plate 4, current collecting plate 1 5, upper end plate 6, disc spring 7, bolt 8, insulating plate 1 9, inspection device 10, plate group 11, insulating plate 2 12, positioning block 13, current collecting plate 2 14, membrane electrode 101, chuck joint 1 102, chuck joint 2 103, chuck joint 3 104, chuck joint 4 1001, anode plate 1002, bipolar plate 1003, cathode plate A01, hydrogen outlet 1 A02, hydrogen outlet 2 A03, anode surface of the plate A04, water inlet A05, water outlet A06, cathode surface of the plate A07, reference positioning edge A08, auxiliary positioning edge A09, avoidance groove A10, water outlet 1 A11, hydrogen outlet 1 A12, hydrogen outlet 2 A13, water outlet 2. [Specific implementation method]

[0032] The utility model is further described below in conjunction with the accompanying drawings:

[0033] As shown in the accompanying drawings, the utility model provides a PEM electrolyzer positioned close to the edge, comprising an upper end plate 5, a lower end plate 3 and a plate group 10 located between the upper end plate 5 and the lower end plate 3, the plate group 10 comprising an anode plate 1001, a cathode plate 1003 and a bipolar plate 1002, a plurality of stacked groups of bipolar plates 1002 are arranged between the anode surface of the anode plate 1001 and the cathode surface of the cathode plate 1003, the two sides of the bipolar plate 1002 are the cathode surface and the anode surface respectively, membrane electrodes 14 are arranged between adjacent bipolar plates 1002 and between the bipolar plates 1002 and the anode plate 1001 and the cathode plate 1003; positioning blocks 12 are arranged on the outer edge of the plate group 10, the positioning blocks 12 are distributed circumferentially on the periphery of the plate group 10, the positioning blocks 12 are L-shaped structure, and the plate group 10 and the membrane electrode 14 are positioned by the positioning blocks 12 during installation.

[0034] The outer edge of the cathode surface and / or the anode surface of the electrode group 10 is processed with a circle of avoidance groove A09, and the avoidance groove A09 is used to avoid the cathode surface from contacting the anode surface during the test. The positioning block 12 is installed on the lower end plate 3, one side of the right-angle side of the positioning block 12 is fixedly connected to the lower end plate 3, and the other side of the right-angle side of the positioning block 12 is in contact with the electrode group 10; the two sides of one right-angle side of the electrode group 10 are set as the reference positioning side A07, and the two sides of the other right-angle side of the electrode group 10 are set as the auxiliary positioning side A08. The positioning block 12 includes a reference positioning block and an auxiliary positioning block, the reference positioning block is connected with the reference positioning side A07, and the auxiliary positioning block is connected with the auxiliary positioning side A08.

[0035] The upper end plate 5 and the lower end plate 3 are both connected with disc springs 6 by bolts 7 and nuts 2. The disc springs 6 are evenly distributed along the circumference. The disc springs 6 are used to offset the plastic deformation of the seal during the test. The lower end plate 3 is installed with a joint connecting plate 1. The joint connecting plate 1 is arranged symmetrically on the left and right. The joint connecting plate 1 on one side is sealed with a chuck joint 101 and a chuck joint 2 102. The joint connecting plate 1 on the other side is sealed with a chuck joint 3 103 and a chuck joint 4 104. The chuck joint 1 101, the chuck joint 2 102, the chuck joint 3 103 and the chuck joint 4 104 are all used for quick connection of the test bench. An insulating plate 1 8 is arranged between the plate group 10 and the lower end plate 3. The insulating plate 1 8 is used to isolate the plate group 10 from contacting the lower end plate 3 to prevent leakage. An insulating plate 2 11 is arranged between the plate group 10 and the upper end plate 5. The insulating plate 2 11 is used to isolate the plate group 10 from contacting the upper end plate 5 to prevent leakage. The upper and lower ends of the electrode group 10 are respectively connected to the collector plate 2 13 and the collector plate 1 4, which are used to connect the positive or negative pole of the power supply. One side of the electrode group 10 is connected to the inspection device 9, which is used to monitor the electrode plates.

[0036] The anode surface of the anode plate 1001 is engraved with flow channel 1, which provides a channel for the hydrogen generated by water electrolysis to flow out; the cathode surface of the cathode plate 1003 is engraved with flow channel 2, which provides water for water electrolysis; the cathode surface and anode surface of the bipolar plate 1002 are respectively engraved with flow channels, the flow channel on the cathode surface provides water for water electrolysis, and the flow channel on the anode surface provides a channel for hydrogen to flow out.

[0037] The anode surface of the electrode group 10 is provided with a hydrogen outlet 1 A01, a hydrogen outlet 2 A02 and an anode surface A03 of the electrode plate. The anode surface A03 of the electrode plate provides a channel for the generated hydrogen. The hydrogen outlet 1 A01 and the hydrogen outlet 2 A02 are connected to the inner hole of the chuck joint 101, the inner hole of the chuck joint 3 103 and the flow channel of the anode surface A03 of the electrode plate; the cathode surface of the electrode group 10 is provided with a water inlet A04, a water outlet A05 and a cathode surface A06 of the electrode plate. The cathode surface A06 of the electrode plate is a water inlet. Water is provided by electrolysis, and the water inlet A04 connects the inner hole of the chuck joint 104 and the flow channel A06 on the cathode surface of the electrode plate, and the water outlet A05 connects the inner hole of the chuck joint 102 and the flow channel A06 on the cathode surface of the electrode plate; the membrane electrode 14 is provided with a water inlet A10, a hydrogen inlet A11, a hydrogen inlet A12 and a water inlet A13, which are holes reserved by the membrane electrode 14 for water to pass through.

[0038] The utility model is a PEM electrolyzer used in the hydrogen energy industry to decompose water into hydrogen and oxygen, and is mainly composed of a joint connecting plate, an upper end plate, a lower end plate, an insulating plate, a cathode plate, an anode plate, a bipolar plate, a positioning block, an inspection device, bolts, nuts, disc springs and other components. The utility model optimizes the positioning method of the plate assembly, which can be more accurate and convenient during the assembly process, ensures the stability of the electrolyzer during the test process, and improves the life of the plate; the plate assembly positioning method optimized by the utility model also has the same effect when applied to a fuel cell stack.

[0039] The working principle of the utility model is: connect the power supply to the current collecting plate 1 4 and the current collecting plate 2 13 respectively, and introduce water at the chuck joint 4 104, the water flows into the electrolytic cell, and provides water resources for each cathode surface A06 of the plate group 10, and flows out from the chuck joint 2 102 (see Figure 2 ), the oxygen produced after water electrolysis will be taken out with the water, and hydrogen will be produced on the anode surface A03 of the electrode plate and flow out through the chuck joint 101 and the anode surface 103 of the electrode plate (see Figure 3 ).

[0040] In this utility model, the functions of each part are described as follows:

[0041] Connector plate: connects the ferrule connector to the lower end plate, the contact surface is sealed, and the connection is made by screws. Nut: used in conjunction with bolts. Lower end plate: together with the upper end plate, it flattens other plates, has sufficient rigidity, is lightweight, and has a corrosion-resistant surface. Collector plate 1: connects the positive or negative pole of the power supply. Upper end plate: together with the lower end plate, it flattens other plates, has sufficient rigidity, is lightweight, and has a corrosion-resistant surface. Disc spring: can be compressed and deformed, offset the plastic deformation of the seal during the test, and ensure continuous compression force. Bolt: used in conjunction with nuts to fix the plate firmly. Insulation plate 1: isolates the contact between the plate and the lower end plate to prevent leakage. Inspection device: monitors the plate. Plate group: consists of anode plate, cathode plate, and bipolar plate. Insulation plate 2: isolates the contact between the plate and the upper end plate to prevent leakage. Positioning block: assists in the installation of the plate and membrane electrode to ensure accurate installation. Collector plate 2: connects the positive or negative pole of the power supply. Membrane electrode: provides medium during water decomposition. Chuck connector 1: quick connection test bench; Chuck connector 2: quick connection test bench; Chuck connector 3: quick connection test bench; Chuck connector 4: quick connection test bench. Anode plate: engraved with flow channels to provide a channel for the hydrogen produced by water electrolysis to flow out; Bipolar plate: both sides can have flow channels, the cathode side provides water for water electrolysis, and the anode side provides a channel for hydrogen to flow out; Cathode plate: engraved with flow channels to provide water for water electrolysis.

[0042] Hydrogen outlet 1: connects the inner hole of the ferrule with the channel on the anode surface of the plate; Hydrogen outlet 2: connects the inner hole of the ferrule with the channel on the anode surface of the plate; The anode surface of the plate: provides a channel for the generated hydrogen; Water inlet: connects the inner hole of the ferrule with the channel on the cathode surface of the plate; Water outlet: connects the inner hole of the ferrule with the channel on the cathode surface of the plate; The cathode surface of the plate: provides water for water electrolysis. Reference positioning edge: serves as a reference when assembling the plate; Auxiliary positioning edge: serves as an auxiliary positioning function when assembling the plate. Avoidance groove: a circle of grooves is machined on the edge of the cathode surface or anode surface of each plate to avoid contact between the two plates. Water inlet: a hole reserved for water to pass through the membrane electrode of the electrolyzer; Hydrogen inlet 1: a hole reserved for water to pass through the membrane electrode of the electrolyzer; Hydrogen inlet 2: a hole reserved for water to pass through the membrane electrode of the electrolyzer; Water inlet: a hole reserved for water to pass through the membrane electrode of the electrolyzer.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the records in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0044] The present invention is not limited to the above-mentioned implementation modes, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be considered as equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A PEM electrolyzer positioned close to the edge, characterized in that: The invention comprises an upper end plate (5), a lower end plate (3) and a plate group (10) located between the upper end plate (5) and the lower end plate (3), wherein the plate group (10) comprises an anode plate (1001), a cathode plate (1003) and a bipolar plate (1002), wherein a plurality of stacked bipolar plates (1002) are arranged between the anode surface of the anode plate (1001) and the cathode surface of the cathode plate (1003), and the two sides of the bipolar plate (1002) are respectively the cathode surface and the anode surface. A membrane electrode (14) is provided between adjacent bipolar plates (1002) and between the bipolar plates (1002) and the anode plate (1001) and the cathode plate (1003); a positioning block (12) is provided at the outer edge of the electrode group (10); the positioning block (12) is distributed circumferentially around the periphery of the electrode group (10); the positioning block (12) is in an L-shaped structure; the electrode group (10) and the membrane electrode (14) are positioned by the positioning block (12) during installation.

2. The edge-positioned PEM electrolyzer of claim 1, wherein: The outer edge of the cathode surface and / or the anode surface of the electrode assembly (10) is processed with a circle of avoidance grooves (A09), and the avoidance grooves (A09) are used to prevent the cathode surface from contacting the anode surface during the test process.

3. The edge-positioned PEM electrolyzer of claim 1, wherein: The anode surface of the anode plate (1001) is engraved with flow channel 1, and the flow channel 1 provides a channel for hydrogen generated by water electrolysis to flow out; the cathode surface of the cathode plate (1003) is engraved with flow channel 2, and the flow channel 2 provides water for water electrolysis; the cathode surface and anode surface of the bipolar plate (1002) are respectively engraved with flow channels, the flow channel on the cathode surface provides water for water electrolysis, and the flow channel on the anode surface provides a channel for hydrogen to flow out.

4. The edge-positioned PEM electrolyzer of claim 1, wherein: The positioning block (12) is mounted on the lower end plate (3), one side of the right-angled side of the positioning block (12) is fixedly connected to the lower end plate (3), and the other side of the right-angled side of the positioning block (12) is in contact with and connected to the electrode assembly (10).

5. The edge-positioned PEM electrolyzer of claim 4, wherein: The two sides of one right-angled side of the electrode assembly (10) are arranged as reference positioning sides (A07), the two sides of another right-angled side of the electrode assembly (10) are arranged as auxiliary positioning sides (A08), the positioning block (12) comprises a reference positioning block and an auxiliary positioning block, the reference positioning block is cooperatively connected to the reference positioning side (A07), and the auxiliary positioning block is cooperatively connected to the auxiliary positioning side (A08).

6. The edge-positioned PEM electrolyzer of claim 1, wherein: A joint connecting plate (1) is installed on the lower end plate (3), and the joint connecting plates (1) are arranged symmetrically on the left and right. A chuck joint 1 (101) and a chuck joint 2 (102) are sealedly connected on the joint connecting plate (1) on one side, and a chuck joint 3 (103) and a chuck joint 4 (104) are sealedly connected on the joint connecting plate (1) on the other side. The chuck joint 1 (101), the chuck joint 2 (102), the chuck joint 3 (103) and the chuck joint 4 (104) are all used for quick connection of the test bench.

7. The edge-positioned PEM electrolyzer of claim 1, wherein: The upper end plate (5) and the lower end plate (3) are both connected with disc springs (6) via bolts (7) and nuts (2); the disc springs (6) are evenly distributed along the circumference; and the disc springs (6) are used to offset the plastic deformation of the seal during the test.

8. The edge-positioned PEM electrolyzer of claim 1, wherein: An insulating plate 1 (8) is provided between the electrode group (10) and the lower end plate (3), and the insulating plate 1 (8) is used to isolate the electrode group (10) from contact with the lower end plate (3) to prevent leakage. An insulating plate 2 (11) is provided between the electrode group (10) and the upper end plate (5), and the insulating plate 2 (11) is used to isolate the electrode group (10) from contact with the upper end plate (5) to prevent leakage.

9. The edge-positioned PEM electrolyzer of claim 1, wherein: The upper and lower ends of the electrode group (10) are respectively connected to a current collecting plate 2 (13) and a current collecting plate 1 (4), wherein the current collecting plate 2 (13) and the current collecting plate 1 (4) are used to connect the positive electrode or the negative electrode of the power supply, and one side of the electrode group (10) is connected to a patrol device (9), wherein the patrol device (9) is used to monitor the electrode plates.

10. The edge-positioned PEM electrolyser according to any one of claims 1 to 9, characterized in that: The anode surface of the electrode assembly (10) is provided with a hydrogen outlet 1 (A01), a hydrogen outlet 2 (A02) and an anode surface (A03) of the electrode plate. The anode surface (A03) of the electrode plate provides a passage for the generated hydrogen. The hydrogen outlet 1 (A01) and the hydrogen outlet 2 (A02) are both connected to the inner hole of the chuck joint 1 (101), the inner hole of the chuck joint 3 (103) and the flow channel of the anode surface (A03) of the electrode plate. The cathode surface of the electrode assembly (10) is provided with a water inlet (A04), a water outlet (A05) and a cathode surface (A06) of the electrode plate. The cathode surface (A06) of the electrode plate is a water inlet. Water is provided by electrolysis, the water inlet (A04) is connected to the inner hole of the chuck joint four (104) and the flow channel of the cathode surface (A06) of the electrode plate, and the water outlet (A05) is connected to the inner hole of the chuck joint two (102) and the flow channel of the cathode surface (A06) of the electrode plate; the membrane electrode (14) is provided with a water inlet one (A10), a hydrogen inlet one (A11), a hydrogen inlet two (A12) and a water inlet two (A13), and the water inlet one (A10), the hydrogen inlet one (A11), the hydrogen inlet two (A12) and the water inlet two (A13) are all holes reserved by the membrane electrode (14) for water to pass through.

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