Water electrolysis hydrogen production device and hydrogen-electricity combined supply system

Abstract

The utility model provides a water electrolysis hydrogen production device and a hydrogen-electricity combined supply system. The water electrolysis hydrogen production device comprises a cabinet body, a plurality of hydrogen production units and a controller, an accommodating space is formed in the cabinet body; the plurality of hydrogen production units are arranged in the accommodating space and are used for producing hydrogen during working; the hydrogen production unit comprises a hydrogen production tank body, a power supply and a controller; the hydrogen production tank body is used for accommodating electrolyte; the power supply is used for supplying power to the electrolyte in the hydrogen production tank body; and the controller is electrically connected with the power supply to control the power supply to supply power to the electrolyte in the hydrogen production tank body. According to the utility model, the plurality of hydrogen production units are integrated in the cabinet body, so that the occupied space is reduced, the plurality of hydrogen production units are uniformly controlled by the controller, and a part of hydrogen production units can be flexibly controlled to work according to user requirements, so that the total yield of hydrogen can be flexibly adjusted, and the defects that the flexibility of hydrogen production equipment is insufficient and the production cost is low are overcome. And different demands of users are difficult to meet.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic hydrogen production technical field, concretely relates to electrolytic water hydrogen production device and hydrogen electricity combined heat and power system. BACKGROUND

[0002] In the related art, AEM electrolytic hydrogen production technology is often used in a dedicated hydrogen production station. Hydrogen gas is produced by electrolyzing pure water mixed with electrolyte. The hydrogen gas can be directly used by users represented by a plant. In some schemes, the hydrogen production station supplies hydrogen gas raw material to a fuel cell to realize the combination of the hydrogen production station and the power generation system. Although the electrolytic hydrogen production efficiency of the hydrogen production station is high, the hydrogen production station occupies a large area. When the hydrogen production needs to be adjusted to meet the differentiated needs of users, the hydrogen production station has the problem of insufficient flexibility in adjusting the hydrogen production. SUMMARY

[0003] The embodiments of the utility model provide an electrolytic water hydrogen production device and a hydrogen electricity combined heat and power system, which can improve the technical problem of insufficient flexibility of the electrolytic hydrogen production equipment.

[0004] In a first aspect, the embodiments of the utility model provide an electrolytic water hydrogen production device, which comprises:

[0005] A cabinet body forms an accommodation space;

[0006] A plurality of hydrogen production units are arranged in the accommodation space and are used to produce hydrogen gas during work;

[0007] The hydrogen production unit comprises:

[0008] A hydrogen production tank is used to accommodate electrolyte;

[0009] A power supply is used to supply power to the electrolyte in the hydrogen production tank;

[0010] A controller is electrically connected to the power supply to control the on-off of the power supply to the electrolyte in the hydrogen production tank.

[0011] In an embodiment, the hydrogen production unit comprises:

[0012] An alkali solution tank is used to store electrolyte;

[0013] A liquid pump is used to pump the electrolyte in the alkali solution tank;

[0014] The liquid pump is connected between the alkali solution tank and the hydrogen production tank.

[0015] In an embodiment, the hydrogen production unit further comprises:

[0016] A radiator is connected between the alkali solution tank and the hydrogen production tank.

[0017] In an embodiment, the radiator comprises:

[0018] A heat exchange shell is connected with the alkali solution tank and the hydrogen production tank to return the electrolyte from the hydrogen production tank to the alkali solution tank;

[0019] A heat dissipation fan is connected with the heat exchange shell to cool the electrolyte in the heat exchange shell when working.

[0020] The heat dissipation fan is electrically connected with the controller to control the working of the heat dissipation fan through the controller.

[0021] In an embodiment, the hydrogen production unit further comprises:

[0022] A temperature sensor is configured to detect the temperature of the electrolyte flowing from the hydrogen production tank to the hydrogen production tank.

[0023] The temperature sensor is electrically connected with the controller to control the working of the heat dissipation fan according to the temperature of the electrolyte.

[0024] In an embodiment, the water electrolysis hydrogen production device further comprises:

[0025] A gas-liquid separator is connected with the plurality of hydrogen production units to receive the hydrogen produced by the hydrogen production units.

[0026] In an embodiment, the water electrolysis hydrogen production device further comprises a drying and purifying unit connected with the gas-liquid separator to dry and / or purify the hydrogen received by the gas-liquid separator.

[0027] In a second aspect, embodiments of the present application provide a hydrogen and electricity cogeneration system, comprising:

[0028] Any of the above water electrolysis hydrogen production devices;

[0029] An energy storage unit is connected with the water electrolysis hydrogen production device to supply power to the water electrolysis hydrogen production device.

[0030] A hydrogen supply unit is connected with the hydrogen production unit of the water electrolysis hydrogen production device to supply hydrogen to the user side.

[0031] A fuel cell is connected with the hydrogen supply unit to generate electricity by using hydrogen.

[0032] A power distribution unit is electrically connected with the fuel cell to supply power to the user side.

[0033] The power distribution unit is electrically connected with the energy storage unit to enable the fuel cell to supply power to the energy storage unit.

[0034] In an embodiment, the power distribution unit is further electrically connected with a wind power generation system and / or a light energy power generation system to enable the wind power generation system and / or the light energy power generation system to supply power to the user side through the power distribution unit.

[0035] In an embodiment, the water electrolysis hydrogen production device is electrically connected with the power distribution unit, so that the wind power generation system and / or the light energy power generation system supply power to the water electrolysis hydrogen production device through the power distribution unit.

[0036] The embodiment of the utility model has the advantages of:

[0037] In the embodiment of the utility model, the plurality of hydrogen production units are integrated in the cabinet body, the space occupation is reduced, the controller and the power supply are integrated in the hydrogen production unit, a part of the hydrogen production units can be flexibly controlled according to the user demand, the total output of hydrogen can be flexibly adjusted, and the technical problem that the hydrogen production equipment flexibility is insufficient and it is difficult to meet the differentiated needs of users is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creating labor for those skilled in the art.

[0039] Figure 1 It is the three-dimensional schematic view of the water electrolysis hydrogen production device provided by the embodiment of the utility model;

[0040] Figure 2 It is the structural block diagram of the water electrolysis hydrogen production device provided by the embodiment of the utility model;

[0041] Figure 3 It is Figure 2 The structural block diagram of the hydrogen production unit in the water electrolysis hydrogen production device shown;

[0042] Figure 4 It is the three-dimensional schematic view of the hydrogen and electricity combined supply system provided by the embodiment of the utility model.

[0043] 100, water electrolysis hydrogen production device; 101, cabinet body; 102, hydrogen production unit; 103, controller; 104, hydrogen production tank body; 105, power supply; 106, lye tank; 107, liquid pump; 108, water pipeline; 109, radiator; 109a, heat exchange shell; 109b, cooling fan; 110, temperature sensor; 111, gas-liquid separator; 112, drying and purification unit; 113, hydrogen gas output pipeline; 114, total hydrogen gas output pipeline; 115, oxygen gas output pipeline; 116, total oxygen gas output pipeline; 117, reflux pipeline;

[0044] 10, hydrogen and electricity combined supply system; 11, hydrogen supply unit; 12, fuel cell; 13, power distribution unit; 14, energy storage unit; 15, wind power generation system; 16, light energy power generation system; 17, master control unit. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0046] Reference Figures 1 to 3 As shown, some embodiments of this application provide an electrolytic water hydrogen production device 100, including: a cabinet 101, hydrogen production units 102, and a controller 103; wherein, the cabinet 101 forms a receiving space, and multiple hydrogen production units 102 are disposed within the receiving space. The hydrogen production units 102 are used to produce hydrogen gas during operation. (Refer to...) Figure 3 As shown, the hydrogen production unit includes: a hydrogen production tank 104, a power supply 105, and a controller 103.

[0047] The hydrogen production tank 104 is used to contain the electrolyte and provide space for the reaction of electrolyzing water to produce hydrogen. The power source 105 is used to supply power to the electrolyte in the hydrogen production tank so that the electrolyte can be electrolyzed. It is understood that the electrolyte here is a mixture of electrolyte and water, in which water produces hydrogen and oxygen during electrolysis, and the electrolyte is used to enable the electrolysis reaction to take place.

[0048] The controller 103 is an electronic component, such as a conventional combination of electronic components like a circuit board, control chip, and semiconductor switch. The controller 103 is electrically connected to the power supply 105 to control the on / off supply of power from the power supply 105 to the electrolyte in the hydrogen production tank 104. In this way, the controller 103 controls the power supply 105 to supply power to the electrolyte in the hydrogen production tank 104, causing the water in the electrolyte to be electrolyzed to produce hydrogen and oxygen. Since each hydrogen production unit 102 has its own independently configured power supply 105, and the control unit controls whether the power supply 105 of each hydrogen production unit 102 supplies power to the hydrogen production tank 104, each hydrogen production unit 102 can produce hydrogen relatively independently.

[0049] With the above scheme, by integrating multiple hydrogen production units 102 in the accommodating space in the cabinet 101, the equipment for producing hydrogen is concentrated on the cabinet 101, reducing the overall space occupation of the multiple hydrogen production units 102. And the controller 103 and power supply 105 are integrated in the hydrogen production unit 102, which can be flexibly used according to user needs, for example, different number of hydrogen production units 102 are used at different time periods to produce hydrogen, so as to realize flexible adjustment of the total output of hydrogen, improve the flexibility of the hydrogen production equipment, and solve the technical problem that it is difficult to meet the differentiated needs of users. And when one or part of the hydrogen production units 102 fails, the other hydrogen production units 102 can work normally, and the production rhythm of the hydrogen production operation is more stable.

[0050] In a specific scheme, as shown in Figure 1 and Figure 2 , for example, multiple hydrogen production units 102 are stacked from bottom to top in the accommodating space of the cabinet 101, and each hydrogen production unit 102 is connected through a corresponding hydrogen output pipeline 113. Each hydrogen output pipeline 113 is provided with a valve for controlling the opening and closing of the hydrogen output pipeline 113, so that each hydrogen production unit 102 can output hydrogen for use by users. Each hydrogen output pipeline 113 can be further connected to a total hydrogen output pipeline 114 to concentrate the hydrogen produced by each hydrogen production unit 102 from the total hydrogen output pipeline 114.

[0051] Based on the principle of electrolytic water hydrogen production, oxygen is generated during the process of producing hydrogen by the hydrogen production unit 102. In a specific scheme, as shown in Figure 1 and Figure 2 , each hydrogen production unit 102 can be connected through a corresponding oxygen output pipeline 115. Each oxygen output pipeline 115 is provided with a valve for controlling the opening and closing of the oxygen output pipeline 115, so that each hydrogen production unit 102 can output oxygen to the outside. Each oxygen output pipeline 115 can be further connected to a total oxygen output pipeline 116 to concentrate the oxygen produced by each hydrogen production unit 102 from the total oxygen output pipeline 116.

[0052] For the hydrogen production tank 104, for example, AEM electrolytic water hydrogen production technology can be used to produce hydrogen. That is, an accommodating tank for accommodating electrolyte is formed on the hydrogen production tank 104, and an anion exchange membrane is arranged in the accommodating tank, and a positive electrode and a negative electrode are respectively electrically connected to the positive electrode and the negative electrode of the power supply 105. When the power supply supplies power to the positive electrode and the negative electrode, water in the electrolyte is electrolyzed to produce hydrogen. In a specific scheme, the electrolyte is, for example, potassium hydroxide aqueous solution, sodium hydroxide aqueous solution, etc.

[0053] In an embodiment, as shown in Figure 3As shown, the hydrogen production unit 102 further comprises a lye tank 106 and a liquid pump 107. The lye tank 106 is used to store electrolyte. The liquid pump 107 is used to pump electrolyte in the lye tank 106, and the liquid pump 107 is connected to the lye tank 106 and the hydrogen production tank 104 through a pipeline respectively. In this way, the liquid pump 107 can pump the electrolyte stored in the lye tank 106 into the hydrogen production tank 104 to replenish the electrolyte in time after the electrolyte is consumed in the hydrogen production tank 104.

[0054] In a specific embodiment, referring to Figure 2 As shown, the water electrolysis hydrogen production device 100 can further be provided with a water delivery pipeline 108 connected to an external water supply device (such as a water pump) and connected to the hydrogen production tank 104, so as to deliver water to the hydrogen production tank 104 for subsequent electrolysis of water to produce hydrogen.

[0055] In the process of electrolytic hydrogen production, the solution in the electrolytic tank generates heat, causing the temperature of the solution to rise. In an embodiment, referring to Figure 3 As shown, the hydrogen production unit 102 further comprises a heat sink 109. The heat sink 109 is connected between the lye tank 106 and the hydrogen production tank 104. In a specific embodiment, the lye tank 106 and the hydrogen production tank 104 are connected through a reflux pipeline 117 to enable the electrolyte to flow from the hydrogen production tank 104 to the lye tank 106 through the reflux pipeline 117. The heat sink 109 is used to cool the electrolyte in the reflux pipeline 117, so that the electrolyte can be stably circulated.

[0056] In a more specific embodiment, referring to Figure 3 As shown, the heat sink 109 comprises a heat exchange housing 109a and a heat dissipation fan 109b. The heat exchange housing 109a is arranged on the reflux pipeline and communicates with the reflux pipeline, i.e. the heat exchange housing 109a communicates the lye tank 106 and the hydrogen production tank 104 to enable the electrolyte to flow back from the hydrogen production tank 104 to the lye tank 106. The heat dissipation fan 109b is connected to the heat exchange housing 109a to cool the electrolyte in the heat exchange housing 109a when working, and the electrolyte is cooled by air cooling. The heat dissipation fan 109b is electrically connected to the controller 103 to control the heat dissipation fan 109b to work through the controller 103. In this way, the hydrogen production unit 102 integrates components for cooling the electrolyte, ensuring that multiple hydrogen production units 102 can work stably and independently.

[0057] In an embodiment, referring to Figure 3As shown, the hydrogen production unit 102 further comprises a temperature sensor 110. The temperature sensor 110 is configured to detect the temperature of the electrolyte flowing from the hydrogen production tank 104 to the hydrogen production tank 104. The temperature sensor 110 is electrically connected to the controller 103, so that the controller 103 controls the operation of the cooling fan 109b according to the temperature of the electrolyte. In this way, by integrating the temperature sensor 110, after detecting the temperature of the electrolyte, the controller 103 controls the cooling capacity of the cooling fan 109b according to the temperature of the electrolyte, so that the electrolyte can be kept at a certain temperature for circulation operation, and the stable operation of the hydrogen production unit 102 is further ensured.

[0058] In an embodiment, referring to Figure 3 As shown, the water electrolysis hydrogen production device 100 further comprises a gas-liquid separator 111. The gas-liquid separator 111 is connected to the plurality of hydrogen production units 102 to receive the hydrogen produced by the hydrogen production units 102. Specifically, when the hydrogen production unit 102 produces hydrogen, water vapor is mixed in the hydrogen conveying pipeline. The gas-liquid separator 111 can be installed on the total hydrogen output pipeline 116114 to separate the hydrogen before outputting it to the user, thereby improving the hydrogen concentration.

[0059] In an embodiment, referring to Figure 3 As shown, the water electrolysis hydrogen production device 100 further comprises a drying and purification unit 112. The drying and purification unit 112 is connected to the gas-liquid separator 111 and is configured to dry and / or purify the hydrogen received by the gas-liquid separator 111. In this way, by providing the drying and purification unit 112, the hydrogen is further dried and purified to provide high-purity hydrogen to the user.

[0060] It should be noted that in the AEM water electrolysis hydrogen production technology, the hydrogen produced often needs to be separated, dried and purified. The specific structure of the gas-liquid separator 111 and the drying and purification unit 112 for realizing the above functions is not the focus of the improvement of the present application. The specific structure of the gas-liquid separator 111 and the drying and purification unit 112 is not described here.

[0061] In a second aspect, referring to Figure 4 As shown, the embodiment of the present application provides a hydrogen and electricity cogeneration system 10, comprising a hydrogen supply unit 11, a fuel cell 12, a power distribution unit 13, an energy storage unit 14 and the aforementioned water electrolysis hydrogen production device 100.

[0062] The hydrogen supply unit 11 is connected with the hydrogen production unit 102 of the water electrolysis hydrogen production device 100, and is used for supplying hydrogen to the user side. In a specific scheme, the hydrogen supply unit 11 includes a pipeline valve assembly for conveying hydrogen, a pressurizing device (such as a compressor) for pressurizing hydrogen, a hydrogen storage device for storing hydrogen, and the like. The flow direction and flow rate of hydrogen can be controlled through the pipeline valve assembly, and the hydrogen can be directly conveyed to the user side for use, or conveyed to the hydrogen storage device for storage. In a more specific scheme, the pipeline valve assembly includes a pressure reducing valve, a ball valve, a safety valve, an electromagnetic valve, and a pipeline integrated assembly, which can be flexibly configured according to actual needs. The pressurizing device is mainly used for pressurizing the low-pressure hydrogen produced by the water electrolysis hydrogen production device 100 to high-pressure hydrogen, and the high-pressure hydrogen is subsequently conveyed to the hydrogen storage device for storage, facilitating the storage of hydrogen. The specific way of hydrogen storage in the hydrogen storage device may, for example, be gaseous hydrogen storage (such as high-pressure gas tank hydrogen storage), solid hydrogen storage (such as metal hydrogen storage bag hydrogen storage), or the like.

[0063] The fuel cell 12 is connected with the hydrogen supply unit 11 for generating electricity by using hydrogen. As a specific scheme, the fuel cell 12 may, for example, be a proton exchange membrane fuel cell 12, which generates electricity by using hydrogen supplied by the hydrogen supply unit 11 as fuel.

[0064] The energy storage unit 14 is connected with the water electrolysis hydrogen production device 100 to supply power to the water electrolysis hydrogen production device 100. As a specific scheme, the energy storage unit 14 is, for example, a battery cluster composed of a plurality of secondary battery PACKs, which can be configured to be electrically connected to the liquid pump 107, the heat sink 109, and the like of the water electrolysis hydrogen production device 100 to supply power to these parts. As an optional scheme, the power supply 105 of the water electrolysis hydrogen production device 100 in the utility model may, for example, not be part of the water electrolysis hydrogen production device 100, but directly as part of the energy storage unit 14, that is, the energy storage unit 14 can be configured to supply power to the electrolytic tank.

[0065] The power distribution unit 13 is electrically connected with the fuel cell 12 to supply power to the user side. As a specific scheme, the power distribution unit 13 includes a DC / AC conversion module for converting the direct current provided by the fuel cell 12 into alternating current to supply to the user. The power distribution unit 13 is electrically connected with the energy storage unit 14, so that the fuel cell 12 can supply power to the energy storage unit 14. The hydrogen and electricity combined supply system 10 has at least part of the beneficial effects of the water electrolysis hydrogen production device 100 described above, which will not be repeated here.

[0066] In a further scheme, the energy storage unit 14 can be electrically connected with the power distribution unit 13, so that the electrical energy stored in the energy storage unit 14 can also be supplied to the user through the power distribution unit 13.

[0067] In an embodiment, the power distribution unit 13 is also electrically connected with a wind power generation system 15 and / or a light energy power generation system 16, so that the wind power generation system 15 and / or the light energy power generation system 16 supplies power to the user side through the power distribution unit 13. In this way, the wind power generation system 15 and / or the light energy power generation system 16 can be used to generate power, while the fuel cell 12 is used to supplement the power supply when the power supplied by the wind power generation system 15 and / or the light energy power generation system 16 is insufficient, and the energy storage unit 14 is electrically connected with the power distribution unit 13 to compensate for the instability of the power supply of the wind power generation system 15 and / or the light energy power generation system 16.

[0068] In an embodiment, the energy storage unit 14 can be electrically connected with the wind power generation system 15 and / or the light energy power generation system 16 through the power distribution unit 13, so that the energy storage unit 14 can be used to store the power supplied by the wind power generation system 15 and / or the light energy power generation system 16. The water electrolysis hydrogen production device 100 can also be electrically connected with the wind power generation system 15 and / or the light energy power generation system 16 through the power distribution unit 13, so that the wind power generation system 15 and / or the light energy power generation system 16 can supply power to the water electrolysis hydrogen production device 100 through the power distribution unit 13, and the power supply mode is the same as that of the energy storage unit 14.

[0069] At this time, the power distribution unit 13 also includes an AC / DC conversion module, which converts the alternating current input by the wind power generation system 15 and / or the light energy power generation system 16 into direct current and provides the direct current to the energy storage unit 14 or the water electrolysis hydrogen production device 100. The DC / AC conversion module mentioned in the present application may, for example, include a DC / AC converter, and the AC / DC conversion module may, for example, include an inverter, so as to realize the conversion between direct current and alternating current. Of course, other electronic elements can also be used to realize the conversion between direct current and alternating current according to the needs, which are not limited in the present application.

[0070] In an embodiment, the hydrogen and electricity cogeneration system 10 further includes a master control unit 17, which is integrated with electronic elements such as circuit boards, control chips, semiconductor switches, and is electrically connected with the power distribution unit 13, the energy storage unit 14, the fuel cell 12, the hydrogen supply unit 11, and the water electrolysis hydrogen production device 100, respectively, to control the operation of these parts, so as to realize different functions in different use scenarios. For example, the power distribution unit 13 is controlled to use the wind power generation system 15 and / or the light energy power generation system 16 to supply power, or to use the fuel cell 12 and / or the energy storage unit 14 to supplement the power supply when the power supplied by the wind power generation system 15 and / or the light energy power generation system 16 is insufficient; for another example, the water electrolysis hydrogen production device 100 is controlled to supply hydrogen to the hydrogen storage equipment of the hydrogen supply unit 11, or to supply hydrogen to the user side, or to supply hydrogen to the fuel cell 12, etc.

[0071] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment explanation is only for helping understanding the method and its core thought of the utility model; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A water electrolysis hydrogen production device (100), characterized in that, include: The cabinet (101) forms a storage space; Multiple hydrogen production units (102) are disposed within the containment space for producing hydrogen during operation; The hydrogen production unit includes: Hydrogen generation tank (104) is used to contain electrolyte; A power supply (105) is used to supply power to the electrolyte in the hydrogen production tank (104); The controller (103) is electrically connected to the power supply (105) to control the on / off supply of power from the power supply (105) to the electrolyte in the hydrogen production tank.

2. The water electrolysis hydrogen production apparatus (100) according to claim 1, characterized in that, The hydrogen production unit (102) further includes: Alkali tank (106) is used to store electrolyte; A liquid pump (107) is used to pump the electrolyte in the alkaline tank (106); The liquid pump (107) is connected between the alkali tank (106) and the hydrogen production tank (104).

3. The water electrolysis hydrogen production apparatus (100) according to claim 2, characterized in that, The hydrogen production unit (102) further includes: A radiator (109) is connected between the alkali tank (106) and the hydrogen production tank (104).

4. The water electrolysis hydrogen production apparatus (100) according to claim 3, characterized in that, The radiator (109) includes: The heat exchange shell (109a) connects the alkali tank (106) and the hydrogen production tank (104) to allow the electrolyte to flow back from the hydrogen production tank (104) to the alkali tank (106); A cooling fan (109b) is connected to the heat exchange housing (109a) to cool the electrolyte inside the heat exchange housing (109a) during operation; The cooling fan (109b) is electrically connected to the controller (103) so that the controller (103) can control the operation of the cooling fan (109b).

5. The water electrolysis hydrogen production apparatus (100) according to claim 4, characterized in that, The hydrogen production unit (102) further includes: Temperature sensor (110) is used to detect the temperature of the electrolyte flowing from the hydrogen production tank (104) to the hydrogen production tank (104); The temperature sensor (110) is electrically connected to the controller (103) so that the controller (103) controls the operation of the cooling fan (109b) according to the temperature of the electrolyte.

6. The water electrolysis hydrogen production apparatus (100) according to any one of claims 1-5, characterized in that, Also includes: A gas-liquid separator (111) is connected to a plurality of the hydrogen production units (102) to receive hydrogen produced by the hydrogen production units (102).

7. The water electrolysis hydrogen production apparatus (100) according to claim 6, characterized in that, Also includes: A drying and purification unit (112), connected to the gas-liquid separator (111), is used to dry and / or purify the hydrogen received by the gas-liquid separator (111).

8. A hydrogen cogeneration system (10), characterized in that, include: The water electrolysis hydrogen production apparatus (100) as described in any one of claims 1-7; An energy storage unit (14) is connected to the water electrolysis hydrogen production device (100) to supply power to the water electrolysis hydrogen production device (100); The hydrogen supply unit (11) is connected to the hydrogen production unit (102) of the water electrolysis hydrogen production device (100) and is used to supply hydrogen to the user side; A fuel cell (12) is connected to the hydrogen supply unit (11) for generating electricity using hydrogen. The power distribution unit (13) is electrically connected to the fuel cell (12) for supplying power to the user side; The power distribution unit (13) is electrically connected to the energy storage unit (14) so ​​that the fuel cell can supply power to the energy storage unit (14).

9. The hydrogen-powered combined heat and power system (10) according to claim 8, characterized in that, The power distribution unit (13) is also electrically connected to a wind power generation system (15) and / or a solar power generation system (16) so that the wind power generation system (15) and / or the solar power generation system (16) can supply power to the user side through the power distribution unit (13).

10. The hydrogen cogeneration system (10) according to claim 9, characterized in that, The water electrolysis hydrogen production device (100) is electrically connected to the power distribution unit (13) so that the wind power generation system (15) and / or the solar power generation system (16) supply power to the water electrolysis hydrogen production device (100) through the power distribution unit (13).

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