A methanol-to-hydrogen power generation unit

Abstract

The present application relates to a methanol-to-hydrogen power generation unit, comprising: a power generation component is provided on the inner wall of the top end of the frame, and the power generation component includes a proton exchange membrane fuel cell; a liquid supply component with methanol inside is provided inside the frame, and the liquid supply component is arranged on the inner wall of the bottom end of the frame and is located below the power generation component. A sandwich layer is provided inside the liquid supply component, and the proton exchange membrane fuel cell is communicated with the sandwich layer. A preheating component is arranged between the power generation component and the liquid supply component and is respectively communicated with the proton exchange membrane fuel cell and the liquid supply component. A refrigeration sheet component is provided on one side of the preheating component close to the proton exchange membrane fuel cell. The cold end of the refrigeration sheet component is close to one side of the proton exchange membrane fuel cell, and the hot end of the refrigeration sheet component is arranged on one surface of the preheating component, which is used to cool the proton exchange membrane fuel cell and assist in heating the methanol in the preheating component at the same time. A heating element is provided inside the preheating component, which is used to heat the methanol and assist in heating the sandwich layer at the same time.

Description

Technical Field

[0001] This application relates to the field of power generation technology, and particularly to a methanol-to-hydrogen power generation unit. Background Art

[0002] With the development of clean energy, miniaturized and highly efficient energy conversion devices have become a research hotspot. Although existing hydrogen fuel cells and traditional internal combustion engine power generation technologies can achieve a certain degree of energy conversion, the former is restricted by the safety and cost of hydrogen storage, while the latter is gradually being phased out due to serious environmental pollution. Methanol, as a liquid fuel, has a high energy density and is convenient for storage and transportation. Therefore, methanol reforming to hydrogen power generation technology has gradually attracted attention.

[0003] Currently, common methanol-to-hydrogen power generation technologies mainly include high-temperature steam reforming, partial oxidation, and catalytic cracking. Among them, high-temperature steam reforming is a technology that uses methanol and water vapor to undergo a reforming reaction through a catalyst at high temperature to produce hydrogen. The reaction temperature is relatively high (usually greater than 200 °C), the catalyst has high activity, and the hydrogen purity is good. The produced hydrogen then undergoes an electrochemical reaction through a proton exchange membrane fuel cell to generate high-temperature water vapor while generating and storing electrical energy.

[0004] When using the steam reforming method for methanol-to-hydrogen production in the existing technology, since it takes a long time to heat methanol to an appropriate reaction temperature, the start-up time of the power generation unit is long and the energy consumption is high. Summary of the Invention

[0005] This application provides a methanol-to-hydrogen power generation unit, which can solve the problems of long heating time and high energy consumption of the existing methanol-to-hydrogen power generation unit for heating methanol.

[0006] The technical solution of this application is as follows: A methanol-to-hydrogen power generation unit, comprising:

[0007] A frame, on the inner wall of the top end of the frame is provided a power generation assembly, and the power generation assembly includes a proton exchange membrane fuel cell;

[0008] A liquid supply assembly with methanol inside, the liquid supply assembly is arranged on the inner wall of the bottom end of the frame and is located below the power generation assembly, and is used to pump methanol into the power generation assembly for power generation. There is a sandwich inside the liquid supply assembly, and the proton exchange membrane fuel cell is communicated with the sandwich, and is used to introduce the water vapor generated by the proton exchange membrane fuel cell into the sandwich to preheat the methanol;

[0009] A preheating component, which is arranged between the power generation component and the liquid supply component and is respectively communicated with the proton exchange membrane fuel cell and the liquid supply component. A refrigerating sheet component is arranged on the side of the preheating component close to the proton exchange membrane fuel cell. The cold end of the refrigerating sheet component is close to the side of the proton exchange membrane fuel cell, and the hot end of the refrigerating sheet component is arranged on one surface of the preheating component, which is used to cool the proton exchange membrane fuel cell and assist in heating the methanol in the preheating component at the same time. A heating element is arranged inside the preheating component, which is used to heat the methanol and assist in heating the interlayer at the same time.

[0010] By adopting the above scheme, the preheating component is arranged between the liquid supply component and the power generation component, so that the cold end and the hot end of the refrigerating sheet component are used to realize the synchronous cooling of the power generation component and the preheating of the methanol. When the methanol is heated to the reaction temperature inside the preheating component, it can have a certain temperature, thereby reducing the energy consumption of the heating element. In addition, the high-temperature water vapor discharged from the proton exchange membrane fuel cell is introduced into the interlayer of the liquid supply component, and the methanol inside the liquid supply component is heated to a certain temperature by means of water bath heating.

[0011] In one embodiment of the present application, the power generation component further includes:

[0012] A methanol steam reformer for producing hydrogen from methanol, which is assembled on the inner wall of the top of the frame and is located on one side of the proton exchange membrane fuel cell;

[0013] A purifier component, one end of which is communicated with the methanol steam reformer and the other end is communicated with the proton exchange membrane fuel cell, which is used to filter hydrogen and introduce it into the proton exchange membrane fuel cell.

[0014] By adopting the above scheme, the heated methanol steam enters the methanol steam reformer, and through the catalytic reaction of the catalyst inside the methanol steam reformer, hydrogen, carbon dioxide and a small amount of carbon monoxide are formed. After being purified by the purifier component, pure hydrogen is obtained to ensure the efficiency of the proton exchange membrane fuel cell in converting electrical energy.

[0015] In one embodiment of the present application, the purifier component includes:

[0016] A purifier main body;

[0017] An intake pipe, one end of which is externally sleeved with a sliding joint, and one end of the sliding joint is threadedly connected to one end of the purifier main body, and the other end of the intake pipe is communicated with the methanol steam reformer;

[0018] An air outlet pipe, one end of the air outlet pipe is threadedly connected to the other end of the purifier main body, and the other end of the air outlet pipe is communicated with the proton exchange membrane fuel cell.

[0019] By adopting the above scheme, by providing an air inlet pipe with a sliding joint, one end of the air inlet pipe and the air outlet pipe are threadedly connected to the purifier main body, so that when the purifier main body needs to be replaced, it is more convenient and faster.

[0020] In one embodiment of the present application, the liquid supply assembly includes:

[0021] An outer box, one side of the outer box is provided with a drain pipe and is communicated with the proton exchange membrane fuel cell through the drain pipe, and one side of the bottom end of the outer box is provided with a liquid discharge pipe communicated with itself;

[0022] An inner box, the inner box is arranged inside the outer box, a sandwich layer is formed between the inner wall of the outer box and the outer wall of the inner box, and methanol is filled inside the inner box;

[0023] A liquid pump, the liquid pump is arranged on the frame and is located on one side of the outer box, the water inlet of the liquid pump is communicated with the inner box through a liquid inlet pipe, and the water outlet of the liquid pump is communicated with the preheating assembly through a liquid outlet pipe.

[0024] By adopting the above scheme, methanol is arranged in the inner box, and an outer box sleeved outside the inner box is synchronously provided, so that the device can utilize the high-temperature water vapor generated when the proton exchange membrane fuel cell prepares electric energy, introduce it into the sandwich layer, and perform water bath heating on the methanol inside the inner box, so that the methanol has a certain temperature before entering the preheating assembly, thereby reducing the energy consumption when the heating element heats.

[0025] In one embodiment of the present application, the preheating assembly includes:

[0026] A preheating plate with a hollow interior, a serpentine pipe is arranged inside the preheating plate, one end of the serpentine pipe is communicated with the liquid outlet pipe, the other end is communicated with the methanol steam reformer, and a heat conduction medium is arranged inside the preheating plate;

[0027] A plurality of heating elements are provided and fixedly assembled inside the preheating plate.

[0028] By adopting the above scheme, through the preheating plate and a heat conduction medium is arranged inside the preheating plate, the heating element is used to heat the methanol inside the serpentine pipe until it is heated to the preset temperature for the reaction. By using the heat conduction medium heating method, the methanol is heated more evenly and quickly.

[0029] In one embodiment of the present application, the preheating plate includes:

[0030] The main body of the disk, an opening is provided on one side of the main body of the disk close to the liquid supply assembly;

[0031] A metal heat conducting plate, one side of the metal heat conducting plate is embedded at the opening, and the other side is in contact with the top surface of the outer box.

[0032] By adopting the above scheme, by arranging a metal heat conducting plate below the preheating disk, when heating the methanol reaching inside the preheating assembly, the high temperature inside the preheating disk can be transferred to the top of the outer box through the metal heat conducting plate, and then part of the redundant heat is transferred to the interlayer inside the outer box to assist in heating the methanol inside the inner box.

[0033] In one embodiment of the present application, the thermoelectric cooler assembly includes:

[0034] Multiple thermoelectric coolers, the multiple thermoelectric coolers are arranged at intervals in a rectangular array on the upper surface of the main body of the disk;

[0035] A heat insulation pad, the heat insulation pad is assembled on the top surface of the main body of the disk, the heat insulation pad is provided with a plurality of empty slots arranged at intervals in a rectangular array, and the multiple thermoelectric coolers are correspondingly arranged in the multiple empty slots one by one.

[0036] By adopting the above scheme, multiple thermoelectric coolers arranged in a rectangular array are provided, and the thermoelectric coolers are embedded in the heat insulation pad. The heat insulation pad can ensure that the heat of the preheating assembly will not be transferred to the proton exchange membrane fuel cell, and at the same time, the thermoelectric coolers can quickly and efficiently cool the proton exchange membrane fuel cell, and at the same time transfer the heat to the preheating assembly for auxiliary heating.

[0037] In one embodiment of the present application, the inner box is a ring-shaped member, an annular cavity is provided inside the inner box, and the water inlet of the liquid pump is communicated with the cavity through a liquid inlet pipe.

[0038] By adopting the above scheme, the box body is set as a ring-shaped member with a cavity inside, thereby increasing the heat exchange area between the inner box and the high-temperature water vapor, and further improving the heat exchange efficiency of the inner box.

[0039] In one embodiment of the present application, the metal heat conducting plate is arranged at the opening, the side surface of the metal heat conducting plate is slidably connected with the main body of the disk in the vertical direction, and the bottom end of the metal heat conducting plate is fixedly connected with the top of the outer box.

[0040] By adopting the above scheme, when the heat conducting medium is heated, by slidably connecting the metal heat conducting plate with the main body of the disk, the heat conducting medium expands after being heated and drives the main body of the disk to rise a certain distance on the metal heat conducting plate, shortening the distance between the thermoelectric cooler and the proton exchange membrane fuel cell, so that the cooling effect is better.

[0041] In one embodiment of the present application, the depth h of the empty slot and the thickness d of the thermoelectric cooler satisfy: d < h, and the top surface of the heat insulation pad is in contact with the proton exchange membrane fuel cell.

[0042] By adopting the above solution, the depth of the empty slot and the thickness of the thermoelectric cooler are limited, so that there is a certain gap between the thermoelectric cooler and the proton exchange membrane fuel cell under normal conditions, that is, without using the preheating component for heating, avoiding the long-term contact between the proton exchange membrane fuel cell and the thermoelectric cooler, and the damage to the thermoelectric cooler caused by vibration.

[0043] In summary, the present application includes at least one of the following beneficial technical effects:

[0044] 1. By setting up the thermoelectric cooler assembly, by arranging the thermoelectric cooler assembly on the upper surface of the preheating component and setting the proton exchange membrane fuel cell above the preheating component, the thermoelectric cooler assembly can utilize the characteristic of absorbing heat at one end and releasing heat at the other end to absorb the heat of the proton exchange membrane fuel cell, achieving the purpose of cooling the battery temperature while transferring the heat to the preheating component to assist the preheating component in heating methanol, saving the energy consumption of the heating element.

[0045] 2. By setting up the preheating component, by arranging the liquid supply component below the preheating component, when the preheating component heats methanol, the temperature of the preheating component itself can be effectively transferred to the liquid supply component to heat the high-temperature water vapor produced by the proton exchange membrane fuel cell, thereby realizing heat transfer to the methanol inside the inner box and assisting in the preheating purpose.

[0046] 3. By setting up high-temperature water vapor, introducing the high-temperature water vapor produced by the proton exchange membrane into the interlayer to achieve the purpose of water bath heating of the methanol inside the inner box, so that the methanol in the inner box can have a certain temperature before being introduced into the preheating component, making the electric energy consumed by the heating element to heat the methanol to the reaction temperature less. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is the front view of a methanol hydrogen production generator set provided by the first embodiment of the present application;

[0048] Figure 2 is the top cross-sectional view of the preheating component of a methanol hydrogen production generator set provided by the first embodiment of the present application;

[0049] Figure 3 is the front cross-sectional view of the liquid supply component of a methanol hydrogen production generator set provided by the first embodiment of the present application;

[0050] Figure 4 is the front view of the purifier component of a methanol hydrogen production generator set provided by the first embodiment of the present application;

[0051] Figure 5 It is the front view of a liquid supply component of a methanol-to-hydrogen power generation unit provided in the second embodiment of the present application;

[0052] Figure 6 It is the front view of a heat insulation pad of a methanol-to-hydrogen power generation unit provided in the third embodiment of the present application;

[0053] Figure 7 It is the front sectional view of a heat insulation pad of a methanol-to-hydrogen power generation unit provided in the third embodiment of the present application.

[0054] Explanation of reference numerals: 1, frame; 2, power generation component; 21, proton exchange membrane fuel cell; 22, methanol reformer for hydrogen production; 23, purifier component; 231, purifier main body; 232, intake pipe; 2321, sliding joint; 233, outlet pipe; 3, liquid supply component; 31, interlayer; 32, methanol; 33, outer box; 331, drain pipe; 332, liquid discharge pipe; 34, inner box; 35, liquid pump; 351, liquid inlet pipe; 352, liquid outlet pipe; 4, preheating component; 41, thermoelectric cooler component; 411, thermoelectric cooler; 412, heat insulation pad; 4121, empty slot; 42, heating element; 43, preheating plate; 431, heat conduction medium; 432, main body of the plate; 4321, opening; 433, metal heat conduction plate; 44, serpentine tube. Detailed description of the specific implementation

[0055] The following further elaborates on a methanol-to-hydrogen power generation unit provided by the present application in conjunction with the attached Figure 1-7 for a more detailed description.

[0056] Embodiment 1

[0057] A methanol-to-hydrogen power generation unit provided in an embodiment of the present application includes: a frame 1, a liquid supply component 3, and a preheating component 4.

[0058] Please refer to Figure 1 , on the inner wall of the top end of the frame 1, a power generation component 2 is provided. The power generation component 2 includes a proton exchange membrane fuel cell 21. The liquid supply component 3 is arranged on the inner wall of the bottom end of the frame 1 and is located below the power generation component 2, and is used to pump methanol 32 into the power generation component 2 for power generation;

[0059] Please refer to Figure 1 and Figure 3 , inside the liquid supply component 3, an interlayer 31 is provided. The proton exchange membrane fuel cell 21 is communicated with the interlayer 31, and is used to introduce the water vapor generated by the proton exchange membrane fuel cell 21 into the interlayer 31 and preheat the methanol 32. The preheating component 4 is arranged between the power generation component 2 and the liquid supply component 3 and is respectively communicated with the proton exchange membrane fuel cell 21 and the liquid supply component 3;

[0060] Please refer to Figure 1 、 Figure 2 and Figure 3 As shown in, on one side of the preheating assembly 4 close to the proton exchange membrane fuel cell 21, there is a peltier module 41. The cold end of the peltier module 41 is close to the side of the proton exchange membrane fuel cell 21, and the hot end of the peltier module 41 is arranged on one side surface of the preheating assembly 4. While cooling the proton exchange membrane fuel cell 21, it can assist in heating the methanol 32 in the preheating assembly 4. Inside the preheating assembly 4, there is a heating element 42 for heating the methanol 32 and simultaneously assisting in heating the interlayer 31. By setting the peltier module 41 and using the principle that one end of the peltier module 41 absorbs heat and the other end releases heat, the positional relationship among the proton exchange membrane fuel cell 21, the preheating assembly 4, and the liquid supply assembly 3 is arranged, so that while the peltier module 41 can reduce the operating temperature of the proton exchange membrane fuel cell 21, the methanol 32 solution can have a certain temperature before entering the preheating assembly 4, reducing the energy consumption of the preheating assembly 4.

[0061] Among them, the heating element 42 can be an electric heating rod.

[0062] In this embodiment, it further includes a controller. The preheating assembly 4, the power generation assembly 2, and the liquid supply assembly 3 are all electrically connected through the controller.

[0063] Please refer to Figure 1 As shown in, the power generation assembly 2 further includes: a methanol steam reformer 22 and a purification unit 23. The methanol steam reformer 22 is used to produce hydrogen from methanol 32. The methanol steam reformer 22 is assembled on the inner wall of the top end of the frame 1 and is located on one side of the proton exchange membrane fuel cell 21. One end of the purification unit 23 is communicated with the methanol steam reformer 22, and the other end is communicated with the proton exchange membrane fuel cell 21, for filtering hydrogen and introducing it into the proton exchange membrane fuel cell 21. By setting the purification unit 23, the hydrogen generated inside the methanol steam reformer 22 can be filtered and purified by the purification unit 23, removing impurities and having a higher purity.

[0064] In this embodiment, the purification unit 23 can be a combination of activated carbon and molecular sieve. The purification unit 23 includes a filter housing. Inside the filter housing, activated carbon and molecular sieve are arranged in sequence along the intake direction. The activated carbon and molecular sieve can be used to absorb and filter carbon monoxide and carbon dioxide inside the hydrogen.

[0065] The methanol steam reformer 22 can be a tubular reactor.

[0066] Please refer to Figure 4, the purifier assembly 23 includes: a purifier main body 231, an intake pipe 232, and an exhaust pipe 233. A sliding joint 2321 is sleeved outside one end of the intake pipe 232. One end of the sliding joint 2321 is threadedly connected to one end of the purifier main body 231. The other end of the intake pipe 232 is communicated with the methanol steam reformer 22. One end of the exhaust pipe 233 is threadedly connected to the other end of the purifier main body 231. The other end of the exhaust pipe 233 is communicated with the proton exchange membrane fuel cell 21. By providing the intake pipe 232 with the sliding joint 2321, when it is necessary to remove the purifier main body 231, the purifier main body 231 can be rotated to make the other end of the purifier main body 231 away from the exhaust pipe 233, and at the same time drive the sliding joint 2321 to rotate together on the intake pipe 232. When the other end of the purifier main body 231 is disengaged from the threaded fit with the exhaust pipe 233, hold the sliding joint 2321 and remove one end of the purifier main body 231 from the sliding joint 2321.

[0067] Please refer to Figure 3 , the liquid supply assembly 3 includes: an outer box 33, an inner box 34, and a liquid pump 35. A drain pipe 331 is provided on one side of the outer box 33 and is communicated with the proton exchange membrane fuel cell 21 through the drain pipe 331. A liquid discharge pipe 332 communicated with itself is provided on one side of the bottom end of the outer box 33. The inner box 34 is arranged inside the outer box 33. A sandwich layer 31 is formed between the inner wall of the outer box 33 and the outer wall of the inner box 34. Methanol 32 is filled inside the inner box 34. The liquid pump 35 is arranged on the frame 1 and is located on one side of the outer box 33. The water inlet of the liquid pump 35 is communicated with the inner box 34 through a liquid inlet pipe 351. The water outlet of the liquid pump 35 is communicated with the preheating assembly 4 through a liquid outlet pipe 352. By providing the sandwich layer 31 inside the liquid supply assembly 3 and communicating the proton exchange membrane fuel cell 21 with the sandwich layer 31, the high-temperature water vapor inside the proton exchange membrane fuel cell 21 can be introduced into the sandwich layer 31 to achieve the purpose of water bath heating of the methanol 32 inside the inner box 34.

[0068] Please refer to Figure 2 and Figure 3, the preheating component 4 includes: a preheating plate 43 with a hollow interior and a heating element 42. A serpentine tube 44 is provided inside the preheating plate 43. One end of the serpentine tube 44 is communicated with the liquid outlet pipe 352, and the other end is communicated with the methanol steam reformer 22. A heat conduction medium 431 is provided inside the preheating plate 43. A plurality of heating elements 42 are provided and fixedly assembled inside the preheating plate 43. By using the preheating plate 43 and the heating element 42 and arranging the serpentine tube 44, the residence time of methanol 32 inside the preheating plate 43 is increased, thereby increasing the effective heating time of methanol 32. The heat conduction medium 431 is heated by a heating rod, making the heating of methanol 32 more comprehensive and sufficient.

[0069] In this embodiment, the heat conduction medium 431 can be water.

[0070] Please refer to Figure 3 , the preheating plate 43 includes: a plate body main body 432 and a metal heat conduction plate 433. An opening 4321 is formed on one side of the plate body main body 432 close to the liquid supply component 3. One side of the metal heat conduction plate 433 is embedded at the opening 4321, and the other side is in contact with the top surface of the outer box 33. By arranging the metal heat conduction plate 433, when the preheating component 4 heats methanol 32, the metal heat conduction plate 433 can transfer some redundant heat inside to the lower outer box 33, and then can heat the water vapor in the inner layer 31 of the outer box 33, serving the purpose of assisting in preheating methanol 32 inside the inner box 34.

[0071] Please continue to refer to Figure 3 , the thermoelectric cooler component 41 includes: a thermoelectric cooler 411 and a heat insulation pad 412. A plurality of thermoelectric coolers 411 are provided, and the plurality of thermoelectric coolers 411 are arranged at intervals in a rectangular array on the upper surface of the plate body main body 432. The heat insulation pad 412 is assembled on the top surface of the plate body main body 432. The heat insulation pad 412 is provided with a plurality of empty slots 4121 arranged at intervals in a rectangular array. The plurality of thermoelectric coolers 411 are correspondingly arranged in the plurality of empty slots 4121. By using the thermoelectric cooler 411 and the heat insulation pad 412 and arranging the plurality of thermoelectric coolers 411 in a rectangular array, when the thermoelectric cooler 411 cools the proton exchange membrane fuel cell 21, the cooling is more uniform and the effect is better. At the same time, the heat insulation pad 412 can reduce the reverse transfer of heat generated by the plate body main body 432 during heating to the proton exchange membrane fuel cell 21, improving the electrical safety.

[0072] In this embodiment, the heat insulation pad 412 can be a sheet-like member made of rock wool material.

[0073] Embodiment 2

[0074] Embodiment 2 has the same basic structure as Embodiment 1, and the difference is as follows:

[0075] See also Figure 5 The inner box 34 is an annular component, and an annular cavity is opened inside the inner box 34. The water inlet of the liquid pump 35 is connected with the cavity through the liquid inlet pipe 351. By optimizing the shape of the inner box 34, when the inner box 34 is inside the outer box 33, the heat exchange area between the inner box 34 and the high-temperature water vapor is wider and the heat exchange efficiency is higher.

[0076] Example 3

[0077] The basic structure of Example 3 is the same as that of Example 1, except that:

[0078] See also Figure 6 The metal heat conducting plate 433 is arranged at the opening 4321, and the side of the metal heat conducting plate 433 is slidably connected to the disk body 432 in the vertical direction, and the bottom end of the metal heat conducting plate 433 is fixedly connected to the top of the outer box 33. By setting the metal heat conducting plate 433 to be slidably connected at the opening 4321, when the heat conducting medium 431 inside the disk body 432 is heated, the expansion of the heat conducting medium 431 after being heated can push the disk body 432 upward, so that it can drive the cooling plate 411 to approach the lower surface of the proton exchange membrane fuel cell 21, thereby enhancing the cooling effect on the proton exchange membrane fuel cell 21.

[0079] See also Figure 7 , the depth h of the slot 4121 and the thickness d of the cooling plate 411 satisfy: d <h,所述隔热垫412顶端表面与所述质子交换膜燃料电池21接触,通过限定制冷片411的厚度以及空槽4121的深度,使得在盘体主体432上升至与质子交换膜燃料电池21下表面相互抵触时,隔热垫412能够率先抵住质子交换膜燃料电池21,并承担挤压时产生的作用力,以保护制冷片411。

[0080] In summary, when the device is required to be used for methanol-to-hydrogen power generation, first, the liquid pump 35 pumps the methanol 32 inside the inner box 34 to the preheating disk 43 through the liquid inlet pipe 351 and the liquid outlet pipe 352. At this time, the heating element 42 heats the methanol 32, and the refrigeration plate 411 works at the same time. The cold end can efficiently cool the proton exchange membrane fuel cell 21, and the hot end releases heat and conducts the heat to the preheating disk 43 through the heat-conducting metal plate, thereby auxiliary heating the methanol 32 in the preheating disk 43 and shortening the heating time.

[0081] The methanol 32 after heating enters the methanol-to-hydrogen reformer 22 to react. The generated hydrogen gas enters the proton exchange membrane fuel cell 21 after being filtered by the purifier assembly 23, realizing the electrochemical reaction of hydrogen and oxygen, thereby storing electrical energy. The high-temperature water vapor generated by the reaction is then introduced into the interlayer 31 to preheat the methanol 32 in the inner box 34 by water bath, so that the methanol 32 has a certain temperature before entering the preheating plate 43, reducing the energy consumption required for the heating element 42 to heat the methanol 32.

[0082] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A methanol-to-hydrogen generator set, characterized in that: Comprising: A frame (1), on the inner wall of the top end of the frame (1) is provided a power generation assembly (2), the power generation assembly (2) includes a proton exchange membrane fuel cell (21); a liquid supply assembly (3) with methanol (32) inside, the liquid supply assembly (3) is arranged on the inner wall of the bottom end of the frame (1) and is located below the power generation assembly (2), and is used to pump methanol (32) into the power generation assembly (2) for power generation. A sandwich layer (31) is provided inside the liquid supply assembly (3), and the proton exchange membrane fuel cell (21) is communicated with the sandwich layer (31), and is used to introduce the water vapor generated by the proton exchange membrane fuel cell (21) into the sandwich layer (31) to preheat the methanol (32). A preheating assembly (4), the preheating assembly (4) is arranged between the power generation assembly (2) and the liquid supply assembly (3) and is respectively communicated with the proton exchange membrane fuel cell (21) and the liquid supply assembly (3). On one side of the preheating assembly (4) close to the proton exchange membrane fuel cell (21) is provided a thermoelectric cooler assembly (41), the cold end of the thermoelectric cooler assembly (41) is close to the side of the proton exchange membrane fuel cell (21), and the hot end of the thermoelectric cooler assembly (41) is arranged on one side surface of the preheating assembly (4), and is used to cool the proton exchange membrane fuel cell (21) and at the same time assist in heating the methanol (32) in the preheating assembly (4). A heating element (42) is provided inside the preheating assembly (4), and is used to heat the methanol (32) and at the same time assist in heating the sandwich layer (31). The preheating assembly (4) includes: a preheating plate (43) with a hollow interior; The preheating plate (43) includes: A plate body main body (432), on one side of the plate body main body (432) close to the liquid supply assembly (3) is provided an opening (4321); A metal heat conducting plate (433), one side of the metal heat conducting plate (433) is embedded at the opening (4321), and the other side is in contact with the top surface of the outer box (33); or The metal heat conducting plate (433) is arranged at the opening (4321), the side surface of the metal heat conducting plate (433) is slidably connected with the plate body main body (432) in the vertical direction, and the bottom end of the metal heat conducting plate (433) is fixedly connected with the top end of the outer box (33); A plurality of thermoelectric coolers (411), the plurality of thermoelectric coolers (411) are arranged at intervals in a rectangular array on the upper surface of the plate body main body (432); A heat insulation pad (412), the heat insulation pad (412) is assembled on the top surface of the plate body main body (432), the heat insulation pad (412) is provided with a plurality of empty slots (4121) arranged at intervals in a rectangular array, the plurality of thermoelectric coolers (411) are correspondingly arranged in the plurality of empty slots (4121), and the depth h of the empty slot (4121) and the thickness d of the thermoelectric cooler (411) satisfy: d < h, and the top surface of the heat insulation pad (412) is in contact with the proton exchange membrane fuel cell (21).

2. A methanol-to-hydrogen generator set according to claim 1, characterized in that: The power generation assembly (2) further includes: A methanol hydrogen production reformer (22) for producing hydrogen from methanol (32), wherein the methanol hydrogen production reformer (22) is mounted on the inner wall of the top end of the frame (1) and is located on one side of the proton exchange membrane fuel cell (21); A purifier component (23), one end of which is connected to the methanol-to-hydrogen reformer (22), and the other end of which is connected to the proton exchange membrane fuel cell (21), and is used to filter hydrogen and pass it into the proton exchange membrane fuel cell (21).

3. A methanol-to-hydrogen generator set according to claim 2, characterized in that: The purifier assembly (23) comprises: Purifier body (231); An air intake pipe (232), wherein a sliding joint (2321) is sleeved on one end of the air intake pipe (232), one end of the sliding joint (2321) is threadedly connected to one end of the purifier body (231), and the other end of the air intake pipe (232) is connected to the methanol-to-hydrogen reformer (22); An air outlet pipe (233), one end of which is threadedly connected to the other end of the purifier body (231), and the other end of which is in communication with the proton exchange membrane fuel cell (21).

4. A methanol-to-hydrogen generator set according to claim 1, characterized in that: The liquid supply assembly (3) comprises: an outer box (33), a drainage pipe (331) is provided on one side of the outer box (33), and the outer box (33) is connected to the proton exchange membrane fuel cell (21) through the drainage pipe (331); an inner box (34), the inner box (34) is arranged inside the outer box (33), the interlayer (31) is formed between the inner wall of the outer box (33) and the outer wall of the inner box (34), the inner box (34) is filled with the methanol (32), and a drainage pipe (332) connected to the outer box (33) is provided on one side of the bottom end of the outer box (33); and a liquid pump (35), the liquid pump (35) is arranged on the frame (1) and located on one side of the outer box (33), the water inlet of the liquid pump (35) is connected to the inner box (34) through the liquid inlet pipe (351), and the water outlet of the liquid pump (35) is connected to the preheating assembly (4) through the liquid outlet pipe (352).

5. A methanol-to-hydrogen generator set according to claim 4, characterized in that: A serpentine tube (44) is provided inside the preheating disk (43), one end of the serpentine tube (44) is connected to the liquid outlet pipe (352), and the other end is connected to the methanol hydrogen reformer (22), and a heat conducting medium (431) is provided inside the preheating disk (43); The heating elements (42) are provided in plurality and are fixedly assembled inside the preheating plate (43).

6. A methanol-to-hydrogen generator set according to claim 4, characterized in that: The inner box (34) is an annular component. An annular cavity is provided inside the inner box (34). The water inlet of the liquid pump (35) is connected to the cavity via a liquid inlet pipe (351).

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