Water electrolysis hydrogen production system
By using an air-cooled heat exchanger to cool the reflux electrolyte in the water electrolysis hydrogen production system, the cooling process is simplified, the problems of high equipment cost and large footprint are solved, and efficient electrolyte temperature control is achieved.
Patent Information
- Application Number
- CN202520231844.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-13
AI Technical Summary
The heat dissipation devices of existing water electrolysis hydrogen production systems are complex, resulting in high equipment costs and large footprints.
An air-cooled heat exchanger is used to cool the refluxed electrolyte. Heat exchange is achieved through air and the walls of the reflux channel, simplifying the cooling process.
Reduce equipment costs and footprint, improve cooling efficiency, and prevent excessive temperature rise of electrolyte and electrolytic cell.
Smart Images
Figure CN223752916U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of hydrogen production, in particular to a water electrolysis hydrogen production system. BACKGROUND
[0002] In the process of electrolyzing water to produce hydrogen, the electrolyte will be heated. If the heat is not dissipated in time, the temperature of the electrolyte and the electrolytic cell will rise sharply, damaging the electrolytic cell and associated equipment. Generally, a heat dissipation device is used to cool the backflow electrolyte. However, the action process of the existing heat dissipation device is relatively complex, and requires more equipment, resulting in high equipment cost and large floor area. CONTENT OF THE UTILITY MODEL
[0003] The main purpose of the present application is to provide a water electrolysis hydrogen production system, which aims to simplify the process of cooling the backflow electrolyte in the water electrolysis hydrogen production system, and reduce the equipment cost and floor area of the equipment.
[0004] To achieve the above-mentioned purpose, the water electrolysis hydrogen production system provided by the present application comprises:
[0005] The electrolytic cell is provided with an electrolytic product outlet and an electrolyte backflow port;
[0006] The gas-liquid separator is provided with an electrolytic product inlet and an electrolyte outlet, and the electrolytic product inlet is communicated with the electrolytic product outlet; and
[0007] The air-cooled heat exchanger forms a backflow channel, and the two ends of the backflow channel are respectively communicated with the electrolyte outlet and the electrolyte backflow port.
[0008] In an embodiment, the air-cooled heat exchanger comprises a plurality of heat exchange pipes arranged side by side and a plurality of heat exchange fins distributed along the axial direction of the heat exchange pipes, a plurality of heat exchange fins are sleeved on each heat exchange pipe, and at least part of the backflow channel is formed in the plurality of heat exchange pipes.
[0009] In an embodiment, at least two of the heat exchange pipes are connected in parallel.
[0010] In an embodiment, at least two of the heat exchange pipes are connected in series.
[0011] In an embodiment, at least two of the heat exchange pipes connected in parallel have an upstream port and a downstream port distributed in sequence in the upstream to downstream direction of the backflow channel; one end of the air-cooled heat exchanger close to the upstream port is provided with a distribution pipe, the extension direction of the distribution pipe is parallel to the distribution direction of the upstream ports of the plurality of heat exchange pipes, the liquid inlet of the backflow channel is arranged in the distribution pipe, and the distribution pipe is communicated with the upstream ports of the plurality of heat exchange pipes.
[0012] In an embodiment, the air-cooled heat exchanger is provided with a liquid collecting pipe at one end close to the downstream port of the air-cooled heat exchanger, the liquid collecting pipe extends in parallel to the distribution direction of the downstream ports of the plurality of heat exchange pipes, the liquid outlet of the return flow channel is arranged in the liquid collecting pipe, and the liquid collecting pipe is communicated with the downstream ports of the plurality of heat exchange pipes.
[0013] In an embodiment, the heat exchange fins and the heat exchange pipes are integrally formed.
[0014] In an embodiment, the heat exchange fins are connected to the heat exchange pipes by at least one of bonding, welding and interference fit.
[0015] In an embodiment, the water electrolysis hydrogen production system further comprises a fan corresponding to the air-cooled heat exchanger.
[0016] In an embodiment, the water electrolysis hydrogen production system comprises two gas-liquid separators, the electrolysis product outlet is provided with two hydrogen side electrolysis product outlets and oxygen side electrolysis product outlets, the electrolysis product inlet of one of the gas-liquid separators is communicated with the hydrogen side electrolysis product outlet, the electrolysis product inlet of the other gas-liquid separator is communicated with the oxygen side electrolysis product outlet, and the electrolyte outlets of the two gas-liquid separators are both communicated with one end of the return flow channel of the air-cooled heat exchanger.
[0017] In an embodiment, the water electrolysis hydrogen production system further comprises a cooling container, and the electrolysis tank is contained in the cooling container.
[0018] In an embodiment, the cooling container is provided with a cooling liquid inlet and a cooling liquid outlet, and the cooling liquid inlet and the cooling liquid outlet are distributed on opposite sides of the cooling container along the axial direction of the electrolysis tank.
[0019] In an embodiment, the outer surface of the electrolysis tank and the cooling container are spaced apart.
[0020] In the technical solution of the present application, the electrolyte flowing out of the electrolyte outlet of the gas-liquid separator can flow back into the electrolysis tank through the return flow channel of the air-cooled heat exchanger. When the electrolyte flows through the return flow channel, the electrolyte can be cooled by air cooling. Specifically, the heat in the electrolyte in the return flow channel is taken away by heat exchange between air and the wall of the return flow channel. After the electrolyte returns to the electrolysis tank, the temperature of the electrolyte in the electrolysis tank is reduced, thereby avoiding excessive temperature rise of the electrolyte and the electrolysis tank and damage to the electrolysis tank and associated equipment. Moreover, since the electrolyte flowing back is directly cooled by the air-cooled heat exchanger, the process flow of electrolyte cooling is simplified, which is conducive to reducing the number of equipment, reducing the cost of equipment and the occupied area of equipment. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.
[0022] Figure 1 A schematic diagram of a water electrolysis hydrogen production system in the related art;
[0023] Figure 2 A schematic diagram of a water electrolysis hydrogen production system in the related art; Figure 1 A corresponding electrolyte cooling principle schematic diagram;
[0024] Figure 3 A schematic diagram of an embodiment of a water electrolysis hydrogen production system provided by the present application;
[0025] Figure 4 A schematic diagram of an embodiment of a water electrolysis hydrogen production system in the related art; Figure 3 A corresponding electrolyte cooling principle schematic diagram;
[0026] Figure 5 A schematic diagram of an embodiment of a water electrolysis hydrogen production system provided by the present application;
[0027] Figure 6 A schematic diagram of an embodiment of a water electrolysis hydrogen production system provided by the present application;
[0028] Explanation of the reference signs:
[0029] 100, electrolytic cell; 110, electrolytic product outlet; 111, hydrogen side electrolytic product outlet; 112, oxygen side electrolytic product outlet; 120, electrolyte backflow port;
[0030] 200, gas-liquid separator; 210, electrolytic product inlet; 220, electrolyte outlet;
[0031] 300, air-cooled heat exchanger; 310, backflow channel; 311, liquid inlet; 312, liquid outlet; 320, heat exchange pipe; 330, heat exchange fin; 340, liquid distribution pipe; 350, liquid collection pipe;
[0032] 400, fan;
[0033] 500, cooling container; 510, cooling liquid inlet; 520, cooling liquid outlet;
[0034] 610, tubular heat exchanger; 620, cooling tower.
[0035] The object implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.
[0037] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.
[0038] In addition, if the embodiments of the present application involve descriptions such as “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, “and / or” or “and / or” appearing throughout the text means that the three parallel solutions are included, for example, “A and / or B” includes A solution, or B solution, or A and B solutions are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it, and when the combination of technical solutions appears to be contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.
[0039] The present application provides a water electrolysis hydrogen production system.
[0040] Please refer to Figure 3 In an embodiment of the present application, the water electrolysis hydrogen production system includes an electrolytic tank 100 and a gas-liquid separator 200, which are provided with an electrolysis product outlet 110 and an electrolyte backflow port 120, and the gas-liquid separator 200 is provided with an electrolysis product inlet 210 and an electrolyte outlet 220. The electrolysis product inlet 210 is communicated with the electrolysis product outlet 110, and the electrolysis product of the electrolytic tank 100 flows out of the electrolytic tank 100 through the electrolysis product inlet 210, and then flows into the gas-liquid separator 200 through the electrolysis product inlet 210. The gas in the electrolysis product carries electrolyte, and the gas and the electrolyte are separated in the gas-liquid separator 200. The separated electrolyte flows to the electrolyte backflow port 120 through the electrolyte outlet 220, and finally flows back into the electrolytic tank 100, thereby realizing the recycling of the electrolyte.
[0041] In the related art, please refer to Figure 1 and Figure 2 The electrolyte flowing from the electrolyte outlet 220 to the electrolyte return port 120 will be heat-exchanged with the cooling liquid in the tube-shell heat exchanger 610, and a cooling tower 620 for cooling the cooling liquid is also needed. The cooling liquid is heat-exchanged with the electrolyte in the tube-shell heat exchanger 610, and then flows into the cooling tower 620 to be heat-exchanged with air, and then returns to the tube-shell heat exchanger 610. Such a cooling process for the electrolyte is relatively complex, and requires more equipment, resulting in high equipment cost and large occupied area.
[0042] In the technical scheme of the present application, please refer to Figures 3 to 5 The water electrolysis hydrogen production system is provided with an air-cooled heat exchanger 300, and the air-cooled heat exchanger 300 is formed with a return flow channel 310, and the two ends of the return flow channel 310 are respectively communicated with the electrolyte outlet 220 and the electrolyte return port 120. In this way, the electrolyte flowing out of the electrolyte outlet 220 of the gas-liquid separator 200 can flow back into the electrolysis tank 100 through the return flow channel 310 of the air-cooled heat exchanger 300. When the electrolyte flows through the return flow channel 310, the electrolyte can be cooled by air cooling, specifically, by heat exchange between air and the wall of the return flow channel 310, thereby taking away the heat in the electrolyte in the return flow channel 310. After this part of the electrolyte returns to the electrolysis tank 100, the temperature of the electrolyte in the electrolysis tank 100 can be reduced, thereby avoiding excessive temperature rise of the electrolyte and the electrolysis tank 100, and damage to the electrolysis tank 100 and associated equipment. Moreover, since the air-cooled heat exchanger 300 is used to directly cool the returned electrolyte, the process flow for cooling the electrolyte is simplified, which is conducive to reducing the number of equipment, reducing the equipment cost and the occupied area of the equipment.
[0043] In an embodiment, the air-cooled heat exchanger 300 includes a plurality of heat exchange pipes 320 arranged side by side and a plurality of heat exchange fins 330 distributed along the axial direction of the heat exchange pipes 320. Each of the heat exchange pipes 320 is sleeved with a plurality of heat exchange fins 330, and at least part of the return flow channels 310 are formed in the plurality of heat exchange pipes 320. It can be understood that the axial direction of the heat exchange pipes 320 is the extension direction of the heat exchange pipes 320. In this embodiment, the air-cooled heat exchanger 300 is configured as a tube-fin heat exchanger, the heat exchange pipes 320 are used for the electrolyte to flow through, and the heat exchange fins 330 increase the area of the air-cooled heat exchanger 300 and the air for convective heat exchange, thereby improving the heat exchange efficiency of the air-cooled heat exchanger 300 and the cooling effect of the electrolyte in the heat exchange pipes 320. The number of heat exchange pipes 320 is more than two. Of course, in other embodiments, the air-cooled heat exchanger 300 can also be configured as a plate heat exchanger.
[0044] In an embodiment, please refer to Figure 5At least two of the heat exchange pipes 320 are connected in parallel. In this way, the flow area of the air-cooled heat exchanger 300 can be increased by connecting multiple heat exchange pipes 320 in parallel, which helps to increase the flow rate of the electrolyte that the air-cooled heat exchanger 300 can carry, thereby ensuring the backflow efficiency of the electrolyte. Among them, each heat exchange pipe 320 can be connected in parallel, or at least two of the multiple heat exchange pipes 320 can be connected in parallel and at least two of the multiple heat exchange pipes 320 can be connected in series, that is, a mixed connection mode of series and parallel is adopted, only part of the heat exchange pipes 320 are connected in parallel, and in addition to the parallel heat exchange pipes 320, there are also heat exchange pipes 320 connected in series. By connecting the heat exchange pipes 320 in series, the flow path of the electrolyte in the air-cooled heat exchanger 300 can be extended, so that the electrolyte can be fully heat exchanged with the air to improve the cooling effect of the electrolyte. Of course, in other embodiments, all heat exchange pipes 320 can be connected in series.
[0045] In an embodiment, referring to Figure 5 The multiple heat exchange pipes 320 have upstream ports and downstream ports distributed in sequence in the upstream-to-downstream direction of the backflow channel 310. The air-cooled heat exchanger 300 is provided with a distribution pipe 340 at one end close to the upstream port. The extension direction of the distribution pipe 340 is parallel to the distribution direction of the upstream ports of the multiple heat exchange pipes 320. The inlet 311 of the backflow channel 310 is arranged on the distribution pipe 340. The distribution pipe 340 is connected to the upstream ports of the multiple heat exchange pipes 320. The air-cooled heat exchanger 300 is provided with a collection pipe 350 at one end close to the downstream port. The extension direction of the collection pipe 350 is parallel to the distribution direction of the downstream ports of the multiple heat exchange pipes 320. The outlet 312 of the backflow channel 310 is arranged on the collection pipe 350. The collection pipe 350 is connected to the downstream ports of the multiple heat exchange pipes 320.
[0046] Thus, in the process of electrolyte reflux, the electrolyte will flow out of the electrolyte outlet 220 of the gas-liquid separator 200, first flow into the reflux channel 310 through the liquid inlet 311 provided on the distribution pipe 340, in the reflux channel 310, the electrolyte in the distribution pipe 340 will flow into the plurality of parallel heat exchange pipes 320 through the upstream ports of the plurality of heat exchange pipes 320, and then flow into the collecting pipe 350 through the corresponding downstream ports, and finally flow out of the air-cooled heat exchanger 300 through the liquid outlet 312 on the collecting pipe 350. After that, the electrolyte will flow into the electrolytic tank 100 through the electrolyte reflux port 120 provided on the electrolytic tank 100. In this embodiment, the electrolyte flowing into the liquid inlet 311 can be distributed by the distribution pipe 340, which is beneficial to ensure the uniform distribution of the electrolyte in the plurality of heat exchange pipes 320, thereby ensuring the cooling effect of the electrolyte. The heat-exchanged electrolyte can be combined in the collecting pipe 350, so that the electrolyte can be fully mixed before flowing into the electrolytic tank 100, to ensure the uniformity of the electrolyte temperature. Of course, in other embodiments, only one of the distribution pipe 340 and the collecting pipe 350 can be provided, or neither of the distribution pipe 340 and the collecting pipe 350 can be provided, but the functions of distribution and collection can be realized by a distribution valve and a collection valve, respectively.
[0047] In an embodiment, the heat exchange fins 330 and the heat exchange pipes 320 are integrally formed. Thus, the assembly process of the heat exchange fins 330 and the heat exchange pipes 320 can be omitted, which is beneficial to improve the processing efficiency of the air-cooled heat exchanger 300.
[0048] In an embodiment, the heat exchange fins 330 are connected to the heat exchange pipes 320 by at least one of bonding, welding, and interference fit. That is, the heat exchange fins 330 and the heat exchange pipes 320 are separately formed and then connected to each other. The heat exchange fins 330 and the heat exchange pipes 320 can be connected by a single method or by a combination of two or more methods, which can ensure the stability of the connection between the heat exchange fins 330 and the heat exchange pipes 320, thereby ensuring the structural stability of the air-cooled heat exchanger 300.
[0049] In an embodiment, referring to Figure 3 , the water electrolysis hydrogen production system further comprises a fan 400, and the fan 400 is provided corresponding to the air-cooled heat exchanger 300. Thus, through the operation of the fan 400, forced convection heat exchange between air and the air-cooled heat exchanger 300 can be realized, thereby improving the heat exchange efficiency of the air-cooled heat exchanger 300 and the cooling effect of the electrolyte. Of course, in other embodiments, the fan 400 can not be provided, but an ion wind generator can be provided to generate a charged particle flow by applying high voltage to produce corona discharge, thereby pushing the surrounding air to move and realizing forced convection without a impeller.
[0050] In an embodiment, referring to Figure 3, the water electrolysis hydrogen production system includes two gas-liquid separators 200, the electrolysis product outlet 110 is provided with two, which are hydrogen side electrolysis product outlet 111 and oxygen side electrolysis product outlet 112, one of the electrolysis product inlets 210 of the two gas-liquid separators 200 is communicated with the hydrogen side electrolysis product outlet 111, and the electrolysis product inlet 210 of the other gas-liquid separator 200 is communicated with the oxygen side electrolysis product outlet 112, and the electrolyte outlets 220 of the two gas-liquid separators 200 are both communicated with one end of the reflux channel 310 of the air-cooled heat exchanger 300. In this way, the reflux channel 310 of the same air-cooled heat exchanger 300 can supply the electrolyte reflux recovered by the two gas-liquid separators 200, and the air-cooled heat exchanger 300 can cool the electrolyte recovered by the two gas-liquid separators 200, which is beneficial to further simplify the heat exchange structure of the water electrolysis hydrogen production system for cooling the reflux electrolyte, thereby improving the equipment integration degree of the water electrolysis hydrogen production system. Of course, in other embodiments, one or more air-cooled heat exchangers 300 can be provided for each of the two gas-liquid separators 200.
[0051] In an embodiment, referring to Figure 3 and Figure 6 , the water electrolysis hydrogen production system further includes a cooling container 500, and the electrolysis tank 100 is accommodated in the cooling container 500. It can be understood that the cooling container 500 can be filled with a cooling liquid, so that the electrolysis tank 100 can be partially or completely immersed in the cooling liquid, and the outer surface of the electrolysis tank 100 is cooled by the cooling liquid, thereby indirectly removing the heat of the electrolyte in the electrolysis tank 100. Therefore, the cooling effect of the electrolysis tank 100 and the electrolyte can be further improved, thereby ensuring the working performance of the water electrolysis hydrogen production system. Moreover, the cooling container 500 has a simple structure, and only needs to be filled with a cooling liquid to effectively and reliably cool the electrolysis tank 100, without increasing the complexity of the system too much. It should be noted that the cooling liquid is preferably an insulating medium, such as cooling oil, but if the related components of the electrolysis tank 100 are well insulated, a non-insulating medium can also be used as the cooling liquid.
[0052] In an embodiment, referring to Figure 3The cooling container 500 is provided with a cooling liquid inlet 510 and a cooling liquid outlet 520, which are distributed on opposite sides of the cooling container 500 along the axial direction of the electrolytic cell 100. It can be understood that the axial direction of the electrolytic cell 100 is the direction in which the plurality of electrode plates are distributed, so that the cooling liquid can flow through the surface of the electrolytic cell 100 during the process of flowing from the cooling liquid inlet 510 to the cooling liquid outlet 520, which is beneficial to improve the heat exchange effect between the cooling liquid and the electrolytic cell 100. Of course, in other embodiments, the cooling liquid inlet 510 and the cooling liquid outlet 520 can also be distributed on the radial sides of the electrolytic cell 100.
[0053] In an embodiment, referring to Figure 3 and Figure 6 , the outer surface of the electrolytic cell 100 is spaced apart from the cooling container 500. Specifically, the end side outer surface and the circumferential side outer surface of the electrolytic cell 100 are spaced apart from the cooling container 500. In this way, the cooling liquid can flow between the electrolytic cell 100 and the cooling container 500 to fully contact the outer surface of the electrolytic cell 100, thereby fully exchanging heat with the electrolytic cell 100, thereby improving the cooling effect of the cooling liquid on the electrolytic cell 100. The electrolytic cell 100 can be suspended in the cooling container 500, or the electrolytic cell 100 can be connected to the cooling container 500 by mounting brackets arranged on the end side or the bottom side of the electrolytic cell 100. In addition, the top of the cooling container 500 can be an open structure or a structure provided with a cover. Of course, in other embodiments, part of the surface of the electrolytic cell 100 can also be in contact with the wall of the cooling container 500.
[0054] The above only describes exemplary embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation based on the technical concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.
Claims
1. A hydrogen production system by water electrolysis, characterized by, The application relates to a water electrolysis hydrogen production system. The system comprises an electrolytic cell (100) provided with an electrolytic product outlet (110) and an electrolyte return port (120); a gas-liquid separator (200) provided with an electrolytic product inlet (210) and an electrolyte outlet (220), wherein the electrolytic product inlet (210) is communicated with the electrolytic product outlet (110); and an air-cooled heat exchanger (300) formed with a return channel (310), wherein two ends of the return channel (310) are communicated with the electrolyte outlet (220) and the electrolyte return port (120) respectively. The air-cooled heat exchanger (300) comprises a plurality of heat exchange pipes (320) arranged side by side and a plurality of heat exchange fins (330) distributed along the axial direction of the heat exchange pipes (320), each of the heat exchange pipes (320) is sleeved with a plurality of the heat exchange fins (330), and at least part of the return channel (310) is formed in the plurality of heat exchange pipes (320). At least two of the heat exchange pipes (320) are connected in parallel; and / or, at least two of the heat exchange pipes (320) are connected in series. The at least two heat exchange pipes (320) connected in parallel have upstream ports and downstream ports which are distributed in sequence in the direction from upstream to downstream of the return channel (310).
2. The water electrolysis hydrogen generation system of claim 1, wherein, The air-cooled heat exchanger (300) is provided with a distribution pipe (340) near one end of the upstream ports, the extension direction of the distribution pipe (340) is parallel to the distribution direction of the upstream ports of the plurality of heat exchange pipes (320), the liquid inlet (311) of the return channel (310) is arranged in the distribution pipe (340), and the distribution pipe (340) is communicated with the upstream ports of the plurality of heat exchange pipes (320); and / or, the air-cooled heat exchanger (300) is provided with a collecting pipe (350) near one end of the downstream ports, the extension direction of the collecting pipe (350) is parallel to the distribution direction of the downstream ports of the plurality of heat exchange pipes (320), the liquid outlet (312) of the return channel (310) is arranged in the collecting pipe (350), and the collecting pipe (350) is communicated with the downstream ports of the plurality of heat exchange pipes (320).
3. The water electrolysis hydrogen generation system of claim 2, wherein, The heat exchange fins (330) and the heat exchange pipes (320) are integrally formed, or the heat exchange fins (330) are connected to the heat exchange pipes (320) by at least one of bonding, welding and interference fit.
4. The water electrolysis hydrogen generation system of claim 3, wherein, The water electrolysis hydrogen production system further comprises a fan (400) corresponding to the air-cooled heat exchanger (300). 5. The water electrolysis hydrogen generation system of claim 2, wherein, 6. The water electrolysis hydrogen generation system of claim 1, wherein, 7. The water electrolysis hydrogen generation system of claim 1, wherein, The water electrolysis hydrogen production system comprises two gas-liquid separators (200), and the electrolysis product outlet (110) is provided with two hydrogen side electrolysis product outlets (111) and oxygen side electrolysis product outlets (112), wherein the electrolysis product inlet (210) of one of the gas-liquid separators (200) is communicated with the hydrogen side electrolysis product outlet (111), the electrolysis product inlet (210) of the other gas-liquid separator (200) is communicated with the oxygen side electrolysis product outlet (112), and the electrolyte outlets (220) of the two gas-liquid separators (200) are both communicated with one end of a backflow channel (310) of the air-cooled heat exchanger (300).
8. The water electrolysis hydrogen generation system of any one of claims 1 to 7, wherein, The water electrolysis hydrogen production system further comprises a cooling container (500), and the electrolysis tank (100) is accommodated in the cooling container (500).
9. The water electrolysis hydrogen generation system of claim 8, wherein, The cooling container (500) is provided with a cooling liquid inlet (510) and a cooling liquid outlet (520), and the cooling liquid inlet (510) and the cooling liquid outlet (520) are distributed on opposite sides of the cooling container (500) along the axial direction of the electrolysis tank (100).
10. The water electrolysis hydrogen generation system of claim 8, wherein, The outer surface of the electrolysis tank (100) and the cooling container (500) are arranged at intervals.