Low-voltage electrolytic cell module, low-voltage electrolytic cell and manufacturing method of low-voltage electrolytic cell

Abstract

The embodiment of the invention provides a low-voltage electrolytic cell module, a low-voltage electrolytic cell and a manufacturing method of the low-voltage electrolytic cell, and relates to the technical field of electrolytic cell hydrogen production. The manufacturing method of the low-voltage electrolytic cell module comprises the steps that a plurality of bipolar plates and a plurality of diaphragms are sequentially and alternately arranged on a frame guide rail at intervals, so that at least one diaphragm in the diaphragms is arranged between any two adjacent bipolar plates in the bipolar plates; driving the pressing assembly to move on the frame guide rail so as to press the plurality of bipolar plates and the plurality of diaphragms; and the pressing assembly, the frame guide rail, the bipolar plates and the diaphragms are fixed, so that the low-voltage electrolytic cell module is obtained. According to the manufacturing method of the low-voltage electrolytic cell module, the low-voltage electrolytic cells are arranged in a modular manufacturing mode, then the multiple low-voltage electrolytic cells are selected to be connected in series or in parallel to form the low-voltage electrolytic cells according to actual production requirements, and therefore the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolyzer hydrogen production, and in particular to a low-pressure electrolyzer module, a low-pressure electrolyzer and a manufacturing method thereof. Background Art

[0002] With the growing demand for low-carbon emission reduction, green hydrogen production technology has received widespread attention. Using renewable energy to electrolyze water to produce hydrogen is the process with the lowest carbon emissions among the many hydrogen source options. Alkaline water electrolysis, as the most mature electrolytic hydrogen production technology, occupies a dominant position. The current alkaline water electrolyzers are divided into high pressure and low pressure according to the outlet pressure.

[0003] For low-voltage electrolyzers, the existing assembly method usually directly ships the parts to the production site, and then assembles all the parts into the electrolyzer on the production line. However, this on-site assembly method has low work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a low-pressure electrolytic cell module, a low-pressure electrolytic cell and a manufacturing method thereof, which can improve work efficiency.

[0005] The embodiment of the present invention is achieved as follows:

[0006] In a first aspect, the present invention provides a method for manufacturing a low-voltage electrolyzer module, comprising:

[0007] A plurality of bipolar plates and a plurality of diaphragms are alternately arranged on the frame rails in sequence, so that at least one diaphragm among the plurality of diaphragms is arranged between any two adjacent bipolar plates among the plurality of bipolar plates;

[0008] driving the clamping assembly to move on the frame rails to compress the plurality of bipolar plates and the plurality of diaphragms;

[0009] The clamping assembly, the frame rails, the plurality of bipolar plates and the plurality of diaphragms are fixed to obtain a low-pressure electrolyzer module.

[0010] In an optional embodiment, the clamping assembly includes a first pressing plate and a second pressing plate, the first pressing plate and the second pressing plate are respectively located on both sides of the plurality of bipolar plates and the plurality of diaphragms, the first pressing plate is slidably matched with the frame rail, and the second pressing plate is fixedly connected to the frame rail;

[0011] The step of driving the clamping assembly to move on the frame rail to compress the plurality of bipolar plates and the plurality of diaphragms comprises:

[0012] The first pressing plate is driven to move on the frame rail toward the second pressing plate, thereby pressing the plurality of bipolar plates and the plurality of diaphragms.

[0013] In an optional embodiment, the step of fixing the clamping assembly, the frame rails, the plurality of bipolar plates and the plurality of diaphragms to obtain a low-pressure electrolyzer module includes:

[0014] Passing the pull rod through the first pressing plate and the second pressing plate, and avoiding the plurality of bipolar plates and the plurality of diaphragms;

[0015] A fastener is assembled onto the tie rod so that the first pressing plate, the second pressing plate, the plurality of bipolar plates and the plurality of diaphragms are kept in a compressed and fixed state.

[0016] In an optional embodiment, the step of fixing the clamping assembly, the frame rails, the plurality of bipolar plates and the plurality of diaphragms to obtain a low-pressure electrolyzer module includes:

[0017] Passing the pull rod through the clamping assembly;

[0018] A fastener is assembled onto the tie rod so that the compression assembly, the plurality of bipolar plates and the plurality of diaphragms are kept in a compressed and fixed state.

[0019] In an optional embodiment, after the step of assembling the fastener onto the pull rod, the step of fixing the clamping assembly, the frame rail, the plurality of bipolar plates and the plurality of diaphragms to obtain a low-pressure electrolyzer module further includes:

[0020] Obtaining the tension of the pull rod;

[0021] If the pulling force is less than the preset pulling force, tighten the fastener;

[0022] If the pulling force is greater than the preset pulling force, loosening the fastener;

[0023] If the pulling force is equal to the preset pulling force, the current state of the fastener is maintained.

[0024] In an optional embodiment, any one of the plurality of bipolar plates is provided with a lug;

[0025] The step of alternately arranging a plurality of bipolar plates and a plurality of diaphragms on the frame rail in sequence so that at least one diaphragm among the plurality of diaphragms is arranged between any two adjacent bipolar plates among the plurality of bipolar plates comprises:

[0026] The plurality of bipolar plates are sequentially arranged at intervals on the frame rail, wherein the support ears are slidably matched with the frame rail;

[0027] The plurality of diaphragms are sequentially arranged at intervals on the frame rail, wherein at least one diaphragm among the plurality of diaphragms is arranged between any two adjacent bipolar plates among the plurality of bipolar plates;

[0028] The step of driving the clamping assembly to move on the frame rail to compress the plurality of bipolar plates and the plurality of diaphragms comprises:

[0029] The pressing assembly is driven to move on the frame rail so that the lugs slide relative to the frame rail, thereby pressing the plurality of bipolar plates and the plurality of diaphragms.

[0030] In an optional embodiment, any two adjacent bipolar plates among the plurality of bipolar plates are respectively a first bipolar plate and a second bipolar plate;

[0031] The step of providing at least one diaphragm among the plurality of diaphragms between any two adjacent bipolar plates among the plurality of bipolar plates comprises:

[0032] The at least one separator is attached to a side of the first bipolar plate close to the second bipolar plate.

[0033] In a second aspect, the present invention provides a method for manufacturing a low-pressure electrolytic cell, comprising:

[0034] Obtain a plurality of low-pressure electrolyzer modules according to the method for manufacturing a low-pressure electrolyzer module according to any one of the aforementioned embodiments;

[0035] The multiple low-pressure electrolyzer modules are connected in series or in parallel to obtain a low-pressure electrolyzer.

[0036] In a third aspect, the present invention provides a low-voltage electrolyzer module, including a frame rail, a clamping assembly, a plurality of bipolar plates, and a plurality of diaphragms;

[0037] The plurality of bipolar plates and the plurality of diaphragms are arranged alternately and spaced on the frame rail in sequence, wherein at least one diaphragm among the plurality of diaphragms is arranged between any two adjacent bipolar plates among the plurality of bipolar plates;

[0038] The clamping assembly is disposed on the frame rail and is used to clamp and fix the plurality of bipolar plates and the plurality of diaphragms.

[0039] In a fourth aspect, the present invention provides a low-pressure electrolyzer comprising a plurality of the low-pressure electrolyzer modules described in the aforementioned embodiments, wherein the plurality of the low-pressure electrolyzer modules are arranged in series or in parallel.

[0040] The beneficial effects of the embodiments of the present invention include:

[0041] The method for manufacturing a low-pressure electrolyzer module includes: arranging a plurality of bipolar plates and a plurality of diaphragms alternately and at intervals in sequence on a frame rail, so that at least one of the plurality of diaphragms is arranged between any two adjacent bipolar plates among the plurality of bipolar plates; driving a clamping assembly to move on the frame rail, thereby clamping the plurality of bipolar plates and the plurality of diaphragms; fixing the clamping assembly, the frame rail, the plurality of bipolar plates and the plurality of diaphragms to obtain a low-pressure electrolyzer module.

[0042] It is easy to understand that by setting the low-voltage electrolyzer to a modular production method, there is no need to assemble all accessories on the production line. Instead, they can be assembled at other sites. Then, according to actual production needs, multiple low-voltage electrolyzer modules are manufactured and then transported to the production line to directly connect them in series or in parallel to form a low-voltage electrolyzer; thereby saving assembly and production time and improving work efficiency.

[0043] The low-pressure electrolyzer manufacturing method comprises: obtaining a plurality of low-pressure electrolyzer modules according to the low-pressure electrolyzer module manufacturing method, and connecting the plurality of low-pressure electrolyzer modules in series or in parallel to obtain a low-pressure electrolyzer. For the low-pressure electrolyzer obtained by the low-pressure electrolyzer manufacturing method, if there is a problem with the bipolar plate or other structure of a low-pressure electrolyzer module in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module can be directly disassembled, and then a new low-pressure electrolyzer module can be replaced and connected, which can facilitate maintenance or replacement, thereby improving fault tolerance and work efficiency.

[0044] The low-pressure electrolyzer module comprises a frame rail, a clamping assembly, a plurality of bipolar plates and a plurality of diaphragms, wherein the plurality of bipolar plates and the plurality of diaphragms are alternately arranged on the frame rail, wherein at least one diaphragm among the plurality of diaphragms is arranged between any two adjacent bipolar plates among the plurality of bipolar plates; the clamping assembly is arranged on the frame rail and is used to clamp and fix the plurality of bipolar plates and the plurality of diaphragms. The low-pressure electrolyzer module has the beneficial effect of improving working efficiency.

[0045] The low-pressure electrolyzer includes a plurality of low-pressure electrolyzer modules, and the plurality of low-pressure electrolyzer modules are arranged in series or in parallel. If a problem occurs in the bipolar plate or other structure of a low-pressure electrolyzer module in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module can be directly disassembled, and then a new low-pressure electrolyzer module can be replaced and connected, which can facilitate maintenance or replacement, thereby improving fault tolerance and work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A schematic structural diagram of a low-voltage electrolyzer module provided in an embodiment of the present invention;

[0048] Figure 2 A flowchart of a method for manufacturing a low-voltage electrolyzer module provided by an embodiment of the present invention;

[0049] Figure 3 A flowchart of a method for manufacturing a low-pressure electrolytic cell provided in an embodiment of the present invention;

[0050] Figure 4 for Figure 2 Flow chart of the sub-steps of step S110;

[0051] Figure 5 for Figure 2 A flowchart of a first sub-step of step S120;

[0052] Figure 6 for Figure 4 A flowchart of the first sub-step of sub-step S112;

[0053] Figure 7 for Figure 4 A flowchart of the second sub-step of sub-step S112;

[0054] Figure 8 for Figure 2 A flowchart of a second sub-step of step S120;

[0055] Fig. 9 for Figure 2 A flowchart of a first sub-step of step S130;

[0056] Fig.10 for Figure 2 Flow chart of the second sub-step of step S130.

[0057] Icons: 100 - low-voltage electrolyzer module; 10 - frame rail; 20 - clamping assembly; 21 - first pressure plate; 22 - second pressure plate; 30 - bipolar plate; 31 - ear; 40 - diaphragm; 50 - pull rod; 60 - fastener. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0059] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0061] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0062] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0063] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] As described in the background art, for low-voltage electrolyzers, the existing assembly method usually directly ships the components to the production site, and then assembles all the components into an electrolyzer on the production line. However, this on-site assembly method has low work efficiency.

[0065] Based on this, please refer to Figure 1-Figure 10The embodiment of the present invention provides a low-pressure electrolyzer module 100, a low-pressure electrolyzer and a manufacturing method thereof, which can effectively improve the above-mentioned technical problems, that is, it can improve work efficiency. The low-pressure electrolyzer module 100, the low-pressure electrolyzer and a manufacturing method thereof will be described in detail below.

[0066] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the low-pressure electrolyzer module 100 provided in this embodiment. Figure 2 The flowchart of the method for manufacturing the low-voltage electrolytic cell module provided in this embodiment is combined with Figure 1 and Figure 2 , the low-voltage electrolyzer module manufacturing method includes:

[0067] Step S110: a plurality of bipolar plates 30 and a plurality of diaphragms 40 are alternately arranged on the frame rail 10 in sequence, so that at least one diaphragm 40 among the plurality of diaphragms 40 is arranged between any two adjacent bipolar plates 30 among the plurality of bipolar plates 30 ;

[0068] Step S120: driving the pressing assembly 20 to move on the frame rail 10, thereby pressing the plurality of bipolar plates 30 and the plurality of diaphragms 40;

[0069] Step S130 : Fixing the pressing assembly 20 , the frame rails 10 , the plurality of bipolar plates 30 , and the plurality of diaphragms 40 to obtain the low-pressure electrolyzer module 100 .

[0070] It is easy to understand that by setting the low-voltage electrolyzer in a modular production manner, there is no need to assemble all accessories on the production line, but they can be assembled at other sites, and then according to actual production needs, multiple low-voltage electrolyzer modules 100 are manufactured and then transported to the production line to directly connect them in series or in parallel to form a low-voltage electrolyzer; thereby saving assembly and production time and improving work efficiency.

[0071] For further information, please refer to Figure 3 , Figure 3 The flowchart of the method for making a low-pressure electrolytic cell provided in this embodiment is combined with Figure 2 and Figure 3 , the low-voltage electrolytic cell manufacturing method comprises:

[0072] Step S210: obtaining a plurality of low-pressure electrolyzer modules 100 according to a low-pressure electrolyzer module manufacturing method;

[0073] Step S230: Connect multiple low-pressure electrolyzer modules 100 in series or in parallel to obtain a low-pressure electrolyzer.

[0074] It can be understood that, for the low-pressure electrolyzer obtained by the low-pressure electrolyzer manufacturing method, if there is a problem with the bipolar plate 30 or other structure of a low-pressure electrolyzer module 100 in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module 100 can be directly disassembled, and then a new low-pressure electrolyzer module 100 can be replaced and connected, which can facilitate maintenance or replacement, thereby improving the fault tolerance and work efficiency.

[0075] Please continue to combine Figure 1 The low-pressure electrolyzer module 100 includes a frame rail 10, a clamping assembly 20, a plurality of bipolar plates 30 and a plurality of diaphragms 40, wherein the plurality of bipolar plates 30 and the plurality of diaphragms 40 are alternately arranged on the frame rail 10 in sequence, wherein at least one diaphragm 40 among the plurality of diaphragms 40 is arranged between any two adjacent bipolar plates 30 among the plurality of bipolar plates 30; the clamping assembly 20 is arranged on the frame rail 10, and is used to clamp and fix the plurality of bipolar plates 30 and the plurality of diaphragms 40.

[0076] It is easy to understand that the low-pressure electrolyzer module 100 provided in this embodiment can be obtained by the above-mentioned method for manufacturing the low-pressure electrolyzer module 100. Therefore, the low-pressure electrolyzer module 100 also has the beneficial effect of improving working efficiency.

[0077] Furthermore, the present embodiment also provides a low-pressure electrolyzer (not shown), which includes a plurality of low-pressure electrolyzer modules 100, and the plurality of low-pressure electrolyzer modules 100 are arranged in series or in parallel. It is understandable that if there is a problem with the bipolar plate 30 or other structure of a low-pressure electrolyzer module 100 in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module 100 can be directly disassembled, and then a new low-pressure electrolyzer module 100 can be replaced and connected, which can facilitate maintenance or replacement, thereby improving the fault tolerance and working efficiency.

[0078] Please continue to combine Figure 3 In order to ensure the airtightness of the low-pressure electrolyzer module 100 during use and improve the efficiency and effect of the subsequent electrolytic hydrogen production process, in this embodiment, before step S230 and after step S210, the low-pressure electrolyzer manufacturing method further includes:

[0079] Step S220: performing an airtight test on a plurality of low-pressure electrolyzer modules 100 .

[0080] Specifically, a leak detection can be performed using leak detection water through an airtight testing device, the bipolar plate 30 with a leak can be extracted, and then a new bipolar plate 30 can be replaced.

[0081] It should be noted that the airtightness testing device can perform airtightness testing on multiple low-pressure electrolyzer modules 100 at the same time, thereby further improving work efficiency.

[0082] Furthermore, in order to ensure the airtightness of the low-pressure electrolyzers formed in series or in parallel during use and further improve the efficiency and effect of the subsequent electrolytic hydrogen production process, in this embodiment, after step S230, the low-pressure electrolyzer manufacturing method further includes:

[0083] Step S240: performing an airtightness test on the low-pressure electrolytic cell.

[0084] Similarly, it is easy to understand that if there is a leakage problem in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module 100 can be removed and replaced with a new low-pressure electrolyzer module 100, and then connected in series or in parallel with other low-pressure electrolyzer modules 100.

[0085] Please continue to combine Figure 1 In order to facilitate the installation of the bipolar plate 30 on the frame rail 10 and facilitate the sliding relative to the frame rail 10 under the action of the clamping assembly 20, in this embodiment, any bipolar plate 30 of the plurality of bipolar plates 30 is provided with a support ear 31. For details, please refer to Figure 4 and Figure 5 , Figure 4 for Figure 2 The flowchart of the sub-steps of step S110 is shown in FIG. Figure 5 for Figure 2 The flowchart of the first sub-step of step S120 in Figure 1 , Figure 2 , Figure 4 and Figure 5 , step S110 includes:

[0086] Sub-step S111: a plurality of bipolar plates 30 are sequentially arranged at intervals on the frame rail 10, wherein the lugs 31 are slidably engaged with the frame rail 10;

[0087] Sub-step S112 : a plurality of diaphragms 40 are sequentially arranged at intervals on the frame rail 10 , wherein at least one diaphragm 40 among the plurality of diaphragms 40 is arranged between any two adjacent bipolar plates 30 among the plurality of bipolar plates 30 .

[0088] Step S120 includes:

[0089] Sub-step S121 : driving the pressing assembly 20 to move on the frame rail 10 , so that the lugs 31 slide relative to the frame rail 10 , thereby pressing the plurality of bipolar plates 30 and the plurality of diaphragms 40 .

[0090] By providing the support ears 31 on the bipolar plate 30 , it is possible to facilitate the positioning and assembly of the bipolar plate 30 and the frame rail 10 , and to facilitate the clamping operation of the clamping assembly 20 on the bipolar plate 30 , thereby improving the work efficiency.

[0091] Furthermore, in order to achieve an insulating effect and ensure the stability and electrolyte amount of the subsequent electrolysis process, a first insulating sleeve may be provided on the support ear 31 , and correspondingly, a second insulating sleeve may be provided on the frame rail 10 .

[0092] Please refer to Figure 6 , Figure 6 for Figure 4 The flowchart of the first sub-step of sub-step S112 is combined with Figure 4 and Figure 6 , sub-step S112 includes:

[0093] Sub-step S1122: attaching at least one separator 40 to a side of the first bipolar plate 30 close to the second bipolar plate 30 ; wherein any two adjacent bipolar plates 30 among the plurality of bipolar plates 30 are the first bipolar plate 30 and the second bipolar plate 30 .

[0094] Combination Figure 1 It can be understood that after multiple bipolar plates 30 and multiple diaphragms 40 are alternately arranged in sequence, the diaphragm 40 is attached to the side of the first bipolar plate 30 close to the second bipolar plate 30, so as to facilitate the subsequent compression assembly 20 to better compress the diaphragm 40 and the bipolar plate 30, improve the assembly effect of the bipolar plate 30 and the diaphragm 40, and ensure the subsequent electrolyte quantity.

[0095] In order to better attach the diaphragm 40 to the side of the first bipolar plate 30 close to the second bipolar plate 30, in this embodiment, before sub-step S1122, sub-step S112 also includes:

[0096] Sub-step S1121 : flushing water toward a side of the first bipolar plate 30 close to the second bipolar plate 30 .

[0097] It is easy to understand that the diaphragm 40 is adhered by the tension of water, so as to better fix the diaphragm 40, facilitate subsequent adhesion with the bipolar plate 30, and further improve the overall quality of the low-pressure electrolyzer module 100 formed after assembly.

[0098] It should be noted that, in other embodiments, the diaphragm 40 may also be fixed by other methods, for example, please refer to Figure 7 , Figure 7 for Figure 4 The flowchart of the second sub-step of sub-step S112 is combined with Figure 7 In other embodiments, before sub-step S1122, sub-step S112 further includes:

[0099] Sub-step S1121 : forming a vacuum environment on a side of the first bipolar plate 30 close to the second bipolar plate 30 .

[0100] Specifically, the vacuum device may be operated to provide a negative pressure vacuum environment for a side of the first bipolar plate 30 close to the second bipolar plate 30 , thereby vacuum-adsorbing the diaphragm 40 onto the bipolar plate 30 .

[0101] Please continue to combine Figure 1 In this embodiment, the clamping assembly 20 includes a first pressing plate 21 and a second pressing plate 22. The first pressing plate 21 and the second pressing plate 22 are respectively located on both sides of the multiple bipolar plates 30 and the multiple diaphragms 40. The first pressing plate 21 is slidably matched with the frame guide rail 10, and the second pressing plate 22 is fixedly connected to the frame guide rail 10.

[0102] Specifically, please refer to Figure 8 , Figure 8 for Figure 2 The flowchart of the second sub-step of step S120 in Figure 1 , Figure 2 and Figure 8 In other embodiments, step S120 includes:

[0103] Sub-step S121 : driving the first pressing plate 21 to move on the frame rail 10 toward the second pressing plate 22 , thereby pressing the plurality of bipolar plates 30 and the plurality of diaphragms 40 .

[0104] It should be noted that by fixedly connecting the second pressure plate 22 to the frame guide rail 10 and slidingly cooperating with the first pressure plate 21 to the frame guide rail 10, the bipolar plate 30 and the diaphragm 40 can be compressed by only operating the movement of the first pressure plate 21, that is, multiple bipolar plates 30 and multiple diaphragms 40 are all moved toward the second pressure plate 22 and compressed, which can improve work efficiency and save energy (only the first pressure plate 21 needs to be driven to move).

[0105] Of course, in other embodiments, the first pressure plate 21 and the second pressure plate 22 may also slide with the frame guide rail 10 at the same time. In this case, it is necessary to simultaneously drive the first pressure plate 21 and the second pressure plate 22 to move relative to each other, so as to compress the multiple bipolar plates 30 and the multiple diaphragms 40 located between the first pressure plate 21 and the second pressure plate 22.

[0106] Please continue to combine Figure 1 In order to fix the pressing assembly 20, the plurality of bipolar plates 30 and the plurality of diaphragms 40, the low-pressure electrolyzer module 100 further includes a tie rod 50 and a fastener 60. For details, please refer to Fig. 9 , Fig. 9 for Figure 2 The flowchart of the first sub-step of step S130 in Figure 1 , Figure 2 and Fig. 9 , step S130 includes:

[0107] Sub-step S131: passing the pull rod 50 through the clamping assembly 20;

[0108] Sub-step S132: Assemble the fastener 60 onto the tie rod 50 so that the compression assembly 20, the plurality of bipolar plates 30 and the plurality of diaphragms 40 remain in a compressed and fixed state.

[0109] Please refer to Fig.10 , Fig.10 for Figure 2 The flowchart of the second sub-step of step S130 in Figure 1 , Figure 2 and Fig.10 In some other embodiments, in order to avoid the plurality of bipolar plates 30 and the plurality of diaphragms 40, step S130 includes:

[0110] Sub-step S131: passing the pull rod 50 through the first pressing plate 21 and the second pressing plate 22, and avoiding the plurality of bipolar plates 30 and the plurality of diaphragms 40;

[0111] Sub-step S132: Assemble the fastener 60 onto the tie rod 50 so that the first pressing plate 21 , the second pressing plate 22 , the plurality of bipolar plates 30 and the plurality of diaphragms 40 remain in a compressed and fixed state.

[0112] Please continue to combine Figure 1 It should be noted that, in the present embodiment, fasteners 60 are provided at both ends of the pull rod 50, which can respectively cooperate with the first pressure plate 21 and the second pressure plate 22, that is, the fastener 60 located on one side of the second pressure plate 22 cooperates with one end of the pull rod 50 to fix the second pressure plate 22; and the fastener 60 located on one side of the first pressure plate 21 cooperates with the other end of the pull rod 50, after the first pressure plate 21 moves toward the second pressure plate 22 and the multiple bipolar plates 30 and the multiple diaphragms 40 are compressed, by screwing the fastener 60, the first pressure plate 21, the second pressure plate 22, the multiple bipolar plates 30 and the multiple diaphragms 40 can be kept in a compressed and fixed state.

[0113] According to the above description, it can be understood that the pull rod 50 will be subjected to tension after being tightened. In order to ensure that the first pressure plate 21, the second pressure plate 22, the multiple bipolar plates 30 and the multiple diaphragms 40 are all in a suitable compression state and to ensure the quality of the manufactured low-pressure electrolyzer module 100, in this embodiment, the low-pressure electrolyzer module 100 also includes a tension sensor (not shown in the figure), which is arranged on the pull rod 50 to detect the tension of the pull rod 50.

[0114] Specifically, please refer to Fig. 9 or Fig.10 , after sub-step S132, step S130 further includes:

[0115] Sub-step S133: obtaining the pulling force of the pull rod 50;

[0116] Sub-step S134: if the tension is less than the preset tension, tighten the fastener 60;

[0117] Sub-step S135: if the pulling force is greater than the preset pulling force, loosen the fastener 60;

[0118] Sub-step S136 : If the tension is equal to the preset tension, the current state of the fastener 60 is maintained.

[0119] It should be noted that the number of the pull rod 50 can be one or more. Figure 1 and Fig. 9 In this embodiment, the number of the pull rods 50 is four. Taking the four pull rods 50 provided in this embodiment as an example, specifically, the tension required to tighten the fastener 60 corresponding to each pull rod 50 can be allocated according to actual design requirements: for example, if the overall clamping force of the low-pressure electrolyzer module 100 is 4000N, it can be distributed to the four pull rods 50 respectively, and the preset tension of the four pull rods 50 can be 1000N. In this way, if the tension sensor detects that the tension of one of the pull rods 50 is less than or greater than 1000N, the tension of the pull rod 50 can be adjusted by tightening or loosening the fastener 60, thereby ensuring that all the pull rods 50 are at the preset tension, thereby ensuring the quality of the manufactured low-pressure electrolyzer module 100, and further improving the electrolysis effect after the subsequent assembly to form the electrolyzer.

[0120] In summary, an embodiment of the present invention provides a low-pressure electrolyzer module 100, a low-pressure electrolyzer and a method for manufacturing the same. The method for manufacturing the low-pressure electrolyzer module 100 includes: alternately arranging a plurality of bipolar plates 30 and a plurality of diaphragms 40 on a frame rail 10 in sequence, so that at least one diaphragm 40 among the plurality of diaphragms 40 is arranged between any two adjacent bipolar plates 30 among the plurality of bipolar plates 30; driving the clamping assembly 20 to move on the frame rail 10, thereby clamping the plurality of bipolar plates 30 and the plurality of diaphragms 40; fixing the clamping assembly 20, the frame rail 10, the plurality of bipolar plates 30 and the plurality of diaphragms 40 to obtain the low-pressure electrolyzer module 100. By setting the low-voltage electrolyzer in a modular production manner, there is no need to assemble all accessories on the production line, but they can be assembled at other sites. Then, according to actual production needs, multiple low-voltage electrolyzer modules 100 are manufactured and then transported to the production line to directly form a low-voltage electrolyzer in series or in parallel; thereby saving assembly and production time and improving work efficiency.

[0121] The method for manufacturing a low-pressure electrolyzer comprises: obtaining a plurality of low-pressure electrolyzer modules 100 according to the method for manufacturing a low-pressure electrolyzer module, and connecting the plurality of low-pressure electrolyzer modules 100 in series or in parallel to obtain a low-pressure electrolyzer. For the low-pressure electrolyzer obtained by the method for manufacturing a low-pressure electrolyzer, if there is a problem with the bipolar plate 30 or other structure of a certain low-pressure electrolyzer module 100 in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module 100 can be directly disassembled, and then a new low-pressure electrolyzer module 100 can be replaced and connected, which can facilitate maintenance or replacement, thereby improving the fault tolerance and working efficiency.

[0122] The low-pressure electrolyzer module 100 includes a frame rail 10, a clamping assembly 20, a plurality of bipolar plates 30, and a plurality of diaphragms 40, wherein the plurality of bipolar plates 30 and the plurality of diaphragms 40 are alternately arranged on the frame rail 10, wherein at least one diaphragm 40 is arranged between any two adjacent bipolar plates 30 among the plurality of bipolar plates 30; the clamping assembly 20 is arranged on the frame rail 10, and is used to clamp and fix the plurality of bipolar plates 30 and the plurality of diaphragms 40. The low-pressure electrolyzer module 100 also has the beneficial effect of improving working efficiency.

[0123] The low-pressure electrolyzer includes a plurality of low-pressure electrolyzer modules 100, and the plurality of low-pressure electrolyzer modules 100 are arranged in series or in parallel. If a problem occurs in the bipolar plate 30 or other structures of a low-pressure electrolyzer module 100 in the low-pressure electrolyzer, the corresponding low-pressure electrolyzer module 100 can be directly disassembled, and then a new low-pressure electrolyzer module 100 can be replaced and connected, which can facilitate maintenance or replacement, thereby improving the fault tolerance and working efficiency.

[0124] The above description is only a specific embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for manufacturing a low-pressure electrolyzer module, characterized in that: include: A plurality of bipolar plates (30) and a plurality of diaphragms (40) are alternately arranged on the frame rail (10) in sequence, so that at least one diaphragm (40) of the plurality of diaphragms (40) is arranged between any two adjacent bipolar plates (30) of the plurality of bipolar plates (30); driving a pressing assembly (20) to move on the frame rail (10) to press the plurality of bipolar plates (30) and the plurality of diaphragms (40); The clamping assembly (20), the frame rail (10), the plurality of bipolar plates (30) and the plurality of diaphragms (40) are fixed to obtain a low-pressure electrolyzer module (100).

2. The method for manufacturing a low-pressure electrolyzer module according to claim 1, characterized in that: The clamping assembly (20) comprises a first pressing plate (21) and a second pressing plate (22), wherein the first pressing plate (21) and the second pressing plate (22) are respectively located on both sides of the plurality of bipolar plates (30) and the plurality of diaphragms (40), the first pressing plate (21) is slidably matched with the frame rail (10), and the second pressing plate (22) is fixedly connected to the frame rail (10); The step of driving the clamping assembly (20) to move on the frame rail (10) to thereby clamp the plurality of bipolar plates (30) and the plurality of diaphragms (40) comprises: The first pressing plate (21) is driven to move on the frame rail (10) in a direction close to the second pressing plate (22), thereby pressing the plurality of bipolar plates (30) and the plurality of diaphragms (40).

3. The method for manufacturing a low-pressure electrolyzer module according to claim 2, characterized in that: The step of fixing the pressing assembly (20), the frame rail (10), the plurality of bipolar plates (30) and the plurality of diaphragms (40) to obtain a low-pressure electrolyzer module (100) comprises: Passing the pull rod (50) through the first pressing plate (21) and the second pressing plate (22) while avoiding the plurality of bipolar plates (30) and the plurality of diaphragms (40); A fastener (60) is assembled onto the pull rod (50) so that the first pressing plate (21), the second pressing plate (22), the plurality of bipolar plates (30) and the plurality of diaphragms (40) are maintained in a compressed and fixed state.

4. The method for manufacturing a low-pressure electrolyzer module according to claim 1, characterized in that: The step of fixing the pressing assembly (20), the frame rail (10), the plurality of bipolar plates (30) and the plurality of diaphragms (40) to obtain a low-pressure electrolyzer module (100) comprises: Passing the pull rod (50) through the clamping assembly (20); A fastener (60) is assembled onto the tie rod (50) so that the compression assembly (20), the plurality of bipolar plates (30) and the plurality of diaphragms (40) are maintained in a compressed and fixed state.

5. The method for manufacturing a low-pressure electrolyzer module according to claim 3 or 4, characterized in that: After the step of assembling the fastener (60) onto the tie rod (50), the step of fixing the clamping assembly (20), the frame rail (10), the plurality of bipolar plates (30) and the plurality of diaphragms (40) to obtain the low-pressure electrolyzer module (100) further includes: Obtaining the pulling force of the pull rod (50); If the pulling force is less than the preset pulling force, tightening the fastener (60); If the pulling force is greater than the preset pulling force, loosening the fastener (60); If the pulling force is equal to the preset pulling force, the current state of the fastener (60) is maintained.

6. The method for manufacturing a low-pressure electrolyzer module according to claim 1, characterized in that: Any one of the plurality of bipolar plates (30) is provided with a support ear (31); The step of alternately arranging a plurality of bipolar plates (30) and a plurality of diaphragms (40) on the frame rail (10) in sequence so that at least one diaphragm (40) of the plurality of diaphragms (40) is arranged between any two adjacent bipolar plates (30) of the plurality of bipolar plates (30) comprises: The plurality of bipolar plates (30) are sequentially arranged at intervals on the frame rail (10), wherein the support ears (31) are slidably engaged with the frame rail (10); The plurality of diaphragms (40) are sequentially arranged at intervals on the frame rail (10), wherein at least one diaphragm (40) among the plurality of diaphragms (40) is arranged between any two adjacent bipolar plates (30) among the plurality of bipolar plates (30); The step of driving the clamping assembly (20) to move on the frame rail (10) to thereby clamp the plurality of bipolar plates (30) and the plurality of diaphragms (40) comprises: The pressing assembly (20) is driven to move on the frame rail (10), so that the support ear (31) slides relative to the frame rail (10), thereby pressing the plurality of bipolar plates (30) and the plurality of diaphragms (40).

7. The method for manufacturing a low-pressure electrolyzer module according to claim 1, characterized in that: Any two adjacent bipolar plates (30) among the plurality of bipolar plates (30) are respectively a first bipolar plate (30) and a second bipolar plate (30); The step of providing at least one diaphragm (40) among the plurality of diaphragms (40) between any two adjacent bipolar plates (30) among the plurality of bipolar plates (30) comprises: The at least one separator (40) is attached to a side of the first bipolar plate (30) close to the second bipolar plate (30).

8. A method for manufacturing a low-pressure electrolytic cell, characterized in that: include: A plurality of low-pressure electrolyzer modules (100) are obtained according to the method for manufacturing a low-pressure electrolyzer module according to any one of claims 1 to 7; The plurality of low-pressure electrolyzer modules (100) are connected in series or in parallel to obtain a low-pressure electrolyzer.

9. A low-pressure electrolyzer module, characterized in that: It comprises a frame rail (10), a clamping assembly (20), a plurality of bipolar plates (30) and a plurality of diaphragms (40); The plurality of bipolar plates (30) and the plurality of diaphragms (40) are alternately arranged on the frame rail (10) in sequence and at intervals, wherein at least one diaphragm (40) of the plurality of diaphragms (40) is arranged between any two adjacent bipolar plates (30) of the plurality of bipolar plates (30); The clamping assembly (20) is arranged on the frame rail (10) and is used to clamp and fix the plurality of bipolar plates (30) and the plurality of diaphragms (40).

10. A low-pressure electrolytic cell, characterized in that: It comprises a plurality of low-pressure electrolyzer modules (100) as claimed in claim 9, wherein the plurality of low-pressure electrolyzer modules (100) are arranged in series or in parallel.

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