An electrolytic cell

Abstract

This invention provides an electrolytic cell, comprising a first module and a second module. The first module includes a first electrode plate and a first predetermined number of first bipolar plates stacked sequentially. The second module is stacked on the side of the first module away from the first electrode plate. The second module includes a second predetermined number of second bipolar plates and second electrode plates stacked sequentially. The second electrode plates are located on the side of the second predetermined number of second bipolar plates away from the first module. One of the second electrode plates and the first electrode plate is a positive electrode plate, and the other is a negative electrode plate. This invention improves assembly efficiency by optimizing the structural design and assembly process of the electrolytic cell, while ensuring accuracy and quality during the assembly process.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, and in particular to an electrolyzer. Background Technology

[0002] In the current mainstream vertical assembly process of high-pressure alkaline electrolyzers, the horizontal stacking of components presents a significant challenge due to the high stacking height. With numerous components stacked layer upon layer, the overall height accumulates as the number of stacks increases. This not only places high demands on the assembly site's space but also increases the difficulty of assembling components at higher positions during operation, requiring workers to utilize climbing equipment, thus increasing operational complexity and risk. During stacking, the large number of components makes it difficult to ensure that each part is precisely placed in its ideal position. For example, slight deviations may occur when manually handling and placing components such as bipolar plates. Accumulated deviations can easily lead to uneven stacking of the electrolyzers. This unevenness may manifest as protrusions or depressions in certain areas of the electrolyzer, resulting in a highly irregular appearance that affects the overall aesthetics and quality image of the product. Simultaneously, tilting is also common. Uneven placement of bottom components or uneven stress during stacking can cause the entire electrolyzer to tilt at an angle rather than being vertical. This not only affects subsequent connections and installations with other equipment but also generates additional stress on the internal structure, threatening the structural stability and safety of the electrolyzer. Stacking distortion is an even more serious problem. When multiple parts are assembled, the twisting of a critical component or improper assembly sequence can cause distortion and deformation within the entire electrolyzer. This disrupts the original alignment of the internal channels, affecting the flow path and efficiency of the electrolyte and gas, thus reducing the electrolyzer's performance and hydrogen production efficiency. From a safety perspective, this non-standard stacking, especially tilting and twisting, can cause the electrolyzer's center of gravity to shift during lifting and turning, leading to dangerous situations such as shaking or even falling, directly threatening the lives of operators and potentially damaging surrounding equipment and facilities. Regarding the consistency of assembly results and batch manufacturing quality, since each assembly may have varying degrees of stacking deviation, it is difficult to guarantee that each electrolyzer has the same assembly precision and performance parameters. For large-scale production, inconsistent product quality increases after-sales maintenance costs and the risk of customer complaints, reducing the company's market competitiveness. Furthermore, because the work is repeated at the same workstation, and to ensure the positional accuracy of the bipolar plates, frequent measurements and adjustments are required during assembly. Each time a bipolar plate is installed, the assembly must be stopped to use measuring tools to verify its position; if there is a deviation, readjustment is necessary. This significantly extends the assembly time of a single electrolytic cell. In mass production, this inefficient assembly method severely restricts the overall production schedule, increasing production costs and delivery cycles. Utility Model Content

[0003] The purpose of this utility model is to provide an electrolytic cell that improves the assembly efficiency and accuracy of the electrolytic cell.

[0004] To solve the above-mentioned technical problems, the present invention provides an electrolytic cell, comprising:

[0005] The first module includes a first electrode plate and a first preset number of first bipolar plates stacked sequentially.

[0006] The second module is stacked on the side of the first module away from the first electrode plate. The second module includes a second preset number of second bipolar plates and second electrode plates stacked sequentially. The second electrode plate is located on the side of the second preset number of second bipolar plates away from the first module. One of the second electrode plate and the first electrode plate is a positive electrode plate and the other is a negative electrode plate.

[0007] Compared with the prior art, the present invention has the following beneficial effects:

[0008] This invention, through in-depth analysis of the structure and function of the electrolytic cell, adopts a modular design, dividing the electrolytic cell into multiple modules such as the first module and the second module. This allows for the independent pre-assembly of each module before assembling multiple modules together, thereby fully utilizing the functions of different assembly stations, enabling parallel assembly work, greatly shortening the overall assembly time, improving assembly efficiency, and facilitating quality control and problem troubleshooting by assembling each module in a relatively independent environment, ensuring accuracy and quality during the assembly process. Attached Figure Description

[0009] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0010] Figure 1 This is a schematic diagram of the electrolytic cell in an embodiment of the present invention;

[0011] Figures 2a to 2f for Figure 1 Assembly diagram of the first module;

[0012] Figure 3a for Figure 2a A schematic diagram of the structure of the first electrode plate;

[0013] Figure 3b for Figure 2a Schematic diagram of the central positioning pin;

[0014] Figure 3c for Figure 2b A schematic diagram of the structure of the first bipolar plate in the middle;

[0015] Figure 3d for Figure 2b Schematic diagram of the central positioning pin;

[0016] Figure 3e for Figure 2d A schematic diagram of the structure at the junction of the bottom of the first module and the clamping fixture of the first module;

[0017] Figure 3f for Figure 2d A schematic diagram of the structure at the junction of the top of the first module and the clamping fixture of the first module;

[0018] Figures 4a to 4f for Figure 1 Assembly diagram of the middle module;

[0019] Figure 5a for Figure 4a Schematic diagram of the structure of the second intermediate plate;

[0020] Figure 5b for Figure 5a Schematic diagram of the structure at the center pin hole;

[0021] Figure 5c for Figure 4a Schematic diagram of the central positioning pin;

[0022] Figure 5d for Figure 4d A schematic diagram of the structure at the junction of the bottom of the middle module and the clamping fixture of the first module;

[0023] Figure 5e for Figure 4d A schematic diagram of the structure at the junction of the top of the middle module and the clamping fixture of the first module;

[0024] Figures 6a to 6f for Figure 1 Assembly diagram of the second module;

[0025] Figure 7a for Figure 6a Schematic diagram of the structure of the first intermediate plate;

[0026] Figure 7b for Figure 7a Schematic diagram of the structure at the center pin hole;

[0027] Figure 7c for Figure 6a Schematic diagram of the central positioning pin;

[0028] Figure 7d for Figure 6c A schematic diagram of the structure of the second electrode plate in the middle;

[0029] Figure 7e for Figure 6d A schematic diagram of the structure at the junction of the bottom of the second module and the clamping fixture of the second module;

[0030] Figure 7f for Figure 6d A schematic diagram of the structure at the junction of the top of the second module and the clamping fixture of the second module;

[0031] Figure 8a and Figure 8b for Figure 1 Two assembly diagrams of a medium-sized electrolytic cell;

[0032] Figures 9a to 9d These are schematic diagrams of the module assembly base, the first module clamping fixture, the second module clamping fixture, and the module assembly base, respectively, in embodiments of this utility model.

[0033] Explanation of reference numerals in the accompanying drawings of this utility model:

[0034] Electrolytic cell 100, first module 10, first electrode plate 1a, second electrode plate 1b, first bipolar plate 2a, second bipolar plate 2b, third bipolar plate 2c, first intermediate plate 3a, second intermediate plate 3b, positioning pin 4, pin hole 5, bottom groove 6, top groove 7, second module 20, intermediate module 30, connecting mechanism 40, first end pressure plate 41, second end pressure plate 42, fastening screw 43, fastening nut 44, first integrated body 50, second integrated body 60, intermediate integrated body 70, first module clamping fixture 200, first bottom chuck 210, First top clamp 220, First bottom clamp 230, First pull rod 240, First tension buckle 250, Second module clamping fixture 300, Second bottom chuck 310, Top chuck 320, Second top clamp 330, Second bottom clamp 340, Second pull rod 350, Second tension buckle 360, Module assembly base 400, Interface 410, Support foot 420, Module pressing fixture 500, Flange 510, Pressure plate 520, Lifting lug 530, Support frame 540, Drive rod 550, Stacking base 600.

[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0036] As the background technology shows, existing electrolytic cell assembly processes are often cumbersome and lack systematic optimization. For example, the installation sequence of components may not be carefully designed, leading to repeated adjustments of the positions of already installed parts during assembly to accommodate the installation requirements of subsequent parts. This not only wastes a lot of time but also easily introduces human error, reducing assembly accuracy. Moreover, traditional assembly processes rely on relatively simple tools and fixtures, lacking dedicated and efficient tools for different assembly steps, making operation inconvenient and difficult to ensure consistency.

[0037] This invention, through in-depth analysis of the structure and function of the electrolytic cell, adopts a modular design, dividing the electrolytic cell into multiple modules such as the first module and the second module. This allows for the independent pre-assembly of each module before assembling multiple modules together, thereby fully utilizing the functions of different assembly stations, enabling parallel assembly work, greatly shortening the overall assembly time, improving assembly efficiency, and facilitating quality control and problem troubleshooting by assembling each module in a relatively independent environment, ensuring accuracy and quality during the assembly process.

[0038] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] This utility model provides an electrolytic cell. Figures 1 to 8bA preferred embodiment of the electrolytic cell provided by this utility model is shown.

[0042] Please see Figure 1 In this embodiment, the electrolytic cell 100 includes a first module 10 and a second module 20. The first module 10 includes a first electrode plate 1a and a first predetermined number of first bipolar plates 2a stacked sequentially. The second module 20 is stacked on the side of the first module 10 away from the first electrode plate 1a. The second module 20 includes a second predetermined number of second bipolar plates 2b and second electrode plates 1b stacked sequentially. The second electrode plates 1b are located on the side of the second predetermined number of second bipolar plates 2b away from the first module 10. One of the second electrode plates 1b and the first electrode plate 1a is a positive electrode plate, and the other is a negative electrode plate.

[0043] Specifically, the electrolytic cell 100 can be a high-pressure alkaline solution electrolytic cell, etc. The following description will use a high-pressure alkaline solution electrolytic cell as an example. The electrolytic cell 100 is a modular electrolytic cell. Based on an in-depth analysis of the structure and function of the electrolytic cell 100, it is divided into multiple modules. These modules are stacked along a preset direction to form the electrolytic cell 100. The preset direction can be horizontal or vertical, etc. The following description will use a vertical preset direction as an example.

[0044] The electrolytic cell 100 includes a first module 10 and a second module 20. The first module 10 is located below the second module 20. The first module 10 includes a first electrode plate 1a and a plurality of first bipolar plates 2a located above the first electrode plate 1a. The second module 20 includes a plurality of second bipolar plates 2b and a second electrode plate 1b located above the plurality of second bipolar plates 2b. The second electrode plate 1b can be a positive electrode plate, while the first electrode plate 1a is a negative electrode plate; alternatively, the second electrode plate 1b can also be a negative electrode plate, while the first electrode plate 1a is a positive electrode plate. The following description will take the case where the first electrode plate 1a is a negative electrode plate and the second electrode plate 1b is a positive electrode plate, i.e., the first module 10 is a negative electrode module and the second module 20 is a positive electrode module.

[0045] The first module 10 includes a first preset number of first bipolar plates 2a, and the second module 20 includes a second preset number of second bipolar plates 2b. The first bipolar plates 2a and the second bipolar plates 2b can be the same type of bipolar plate, or they can be two different types of bipolar plates. Optionally, please refer to [link to relevant documentation]. Figure 1In this embodiment, the first bipolar plate 2a and the second bipolar plate 2b are the same type of bipolar plate, that is, the first bipolar plate 2a and the second bipolar plate 2b are identical. By using the same type of bipolar plate to assemble the first module 10 and the second module 20 of the electrolytic cell 100, the number of component types in the electrolytic cell 100 can be reduced. The specific number of first bipolar plates 2a in the first module 10 can be set according to actual conditions. For example, the first module 10 can include 30 to 70 first bipolar plates 2a, that is, the first preset number can be 30 to 70. Similarly, the specific number of second bipolar plates 2b in the second module 20 can be set according to actual conditions. For example, the second module 20 can include 30 to 70 second bipolar plates 2b, that is, the second preset number can be 30 to 70.

[0046] During the assembly process of the second module 20, the second module 20 can be assembled using the second electrode plate 1b as a support; alternatively, the second module 20 can also have an intermediate plate disposed on the side of the second bipolar plates 2b of a second preset number near the first module 10, and use this intermediate plate as a support for assembly. Optionally, please refer to... Figure 1 In this embodiment, the second module 20 further includes a first intermediate plate 3a, which is located on the side of the second bipolar plates 2b of a second preset number that are close to the first module 10. The first intermediate plate 3a is located below the second bipolar plates 2b and the second plate 1b, so the second module 20 relies on the first intermediate plate 3a, which serves as a key support structure for the second module 20.

[0047] The following description will take the second module 20, which also includes a first intermediate plate 3a, as an example. The first intermediate plate 3a has channels that form a smooth flow path for hydrogen, oxygen, and alkali solution. Optionally, please refer to... Figure 7a In this embodiment, the first intermediate plate 3a is the fourth bipolar plate. The fourth bipolar plate and the second bipolar plate 2b can be the same type of bipolar plate, or they can be two different types of bipolar plates.

[0048] The thickness of the first intermediate plate 3a and the thickness of the second bipolar plate 2b can be equal or unequal. Optionally, please refer to [link to relevant documentation]. Figure 6b , Figure 6c and Figure 7e In this embodiment, the thickness of the first intermediate plate 3a is greater than the thickness of the second bipolar plate 2b. This design, where the first intermediate plate 3a is thicker than the second bipolar plate 2b, improves the structural strength of the first intermediate plate 3a, allowing it to provide better support for the second module 20. The following description will use the example of the first intermediate plate 3a being the fourth bipolar plate, and the fourth bipolar plate being thicker than the second bipolar plate 2b.

[0049] Each module of the electrolytic cell 100 is pre-assembled independently. Multiple modules of the electrolytic cell 100 are then stacked sequentially vertically and fixedly assembled together to complete the overall assembly of the electrolytic cell 100. To achieve a fixed connection between multiple modules of the electrolytic cell 100, a fixed connection structure can be set between any two adjacent modules to fix the multiple modules of the electrolytic cell 100 together; alternatively, a fixed connection mechanism can be set between the topmost and bottommost modules to fix the topmost and bottommost modules together, and other modules located between the topmost and bottommost modules can be clamped and fixed. Optionally, please refer to... Figure 1 In this embodiment, the electrolytic cell 100 further includes a connecting mechanism 40, which connects the first module 10 and the second module 20 to fix the electrolytic cell 100 in the stacking direction. The connecting mechanism 40 is positioned between the first module 10 and the second module 20, allowing each module of the electrolytic cell 100 to be pre-assembled independently. Then, multiple module groups of the electrolytic cell 100 are stacked sequentially in the vertical direction, and the connecting mechanism 40 is used to assemble the multiple modules together, thereby completing the overall assembly of the electrolytic cell 100. The following description uses the example of the electrolytic cell 100 also including the connecting mechanism 40.

[0050] Through its unique structural design, the electrolytic cell 100 achieves modular assembly, thereby improving assembly efficiency. This unique structural design also makes the assembly process of the electrolytic cell 100 more convenient and efficient, reducing assembly time and labor costs, while improving assembly quality and overall equipment performance, and has broad application prospects.

[0051] This utility model, through in-depth analysis of the structure and function of the electrolytic cell 100, adopts a modular design for the electrolytic cell 100, dividing it into multiple modules such as the first module 10 and the second module 20. In this way, each module can be pre-assembled independently first, and then multiple modules can be assembled together. This allows the different assembly stations to play their roles fully, enabling parallel assembly work, greatly shortening the overall assembly time, improving assembly efficiency, and facilitating quality control and problem troubleshooting by assembling each module in a relatively independent environment, thus ensuring the accuracy and quality of the assembly process.

[0052] The embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0053] Depending on the specific number of bipolar plates in the electrolytic cell 100, the electrolytic cell 100 can be divided into two, three, four, or more modules. For example, when the electrolytic cell 100 is divided into two modules, it is simply divided into a first module 10 and a second module 20. Optionally, please refer to... Figure 1 In this embodiment, the electrolytic cell 100 further includes an intermediate module 30, which is stacked between the first module 10 and the second module 20. The intermediate module 30 includes a stacked second intermediate plate 3b and a third preset number of third bipolar plates 2c. The third preset number of third bipolar plates 2c are provided with the second intermediate plate 3b on the side closer to the first module 10 and / or the side closer to the second module 20.

[0054] Specifically, the electrolytic cell 100 is divided into at least three modules. In addition to the first module 10 and the second module 20, the electrolytic cell 100 also includes one or more intermediate modules 30. When the electrolytic cell 100 includes multiple intermediate modules 30, the multiple intermediate modules 30 are stacked sequentially between the first module 10 and the second module 20 in a vertical direction.

[0055] Based on their position within the electrolytic cell 100, the modules are clearly divided into three categories: the first module 10 (i.e., the negative electrode module), the intermediate module 30, and the second module 20 (i.e., the positive electrode module). In the alternating positive and negative electrolytic cell structure, there is typically only one negative electrode module and one positive electrode module, which respectively serve as the electrode at both ends of the electrolytic cell 100 and provide structural support. The specific number of intermediate modules 30 can be determined according to the specific specifications and design requirements of the electrolytic cell 100. For example, 2 to 6 intermediate modules 30 are stacked along the stacking direction of the electrolytic cell 100. The intermediate modules 30 connect the negative electrode module and the positive electrode module, jointly constructing a complete internal structural system of the electrolytic cell. The intermediate modules 30 play a crucial connecting and transitional role in the electrolytic cell 100, and their precise assembly is essential to ensuring the continuity and sealing of the internal flow channels of the electrolytic cell 100.

[0056] The intermediate module 30 includes a third bipolar plate 2c of a third preset number. The third bipolar plate 2c and the first bipolar plate 2a can be the same type of bipolar plate, or the third bipolar plate 2c and the first bipolar plate 2a can be two different types of bipolar plates. Optionally, please refer to [link to relevant documentation]. Figure 1 In this embodiment, the third bipolar plate 2c and the first bipolar plate 2a are the same type of bipolar plate, that is, the third bipolar plate 2c is identical to the first bipolar plate 2a. By using the same type of bipolar plate to assemble the first module 10 and the intermediate module 30 of the electrolytic cell 100, the number of component types in the electrolytic cell 100 can be reduced. The specific number of third bipolar plates 2c included in the intermediate module 30 can be set according to actual conditions. For example, the intermediate module 30 can include 30 to 70 third bipolar plates 2c, that is, the third preset number can be 30 to 70.

[0057] The electrolytic cell 100 is disassembled into 4-8 modules, each containing 30-70 bipolar plates. This modular disassembly provides a new approach to efficient assembly. Independent pre-assembly of each module allows for full utilization of different workstations, enabling parallel assembly work and significantly shortening the overall assembly time. Assembling each module in a relatively independent environment facilitates quality control and troubleshooting, improving the stability and reliability of assembly quality. The following description uses the disassembly of the electrolytic cell 100 into four modules—module 10, module 20, and two intermediate modules 30—as an example.

[0058] The intermediate module 30 also includes a second intermediate plate 3b, which has channels forming a smooth flow path for hydrogen, oxygen, and alkali. The layout of the second intermediate plate 3b is highly flexible. It can be placed only below the third preset number of third bipolar plates 2c, thus placing it at the bottom layer of the intermediate module 30, where it can provide initial support and flow channel guidance. Alternatively, it can be placed only above the third preset number of third bipolar plates 2c, thus placing it at the top layer of the intermediate module 30, effectively stabilizing the intermediate module 30 and connecting it to the flow channel. Furthermore, it can be placed both above and below the third preset number of third bipolar plates 2c, ensuring the structural stability and media transmission of the intermediate module 30 from all angles. The following description will use the example of the second intermediate plate 3b being placed below the third preset number of third bipolar plates 2c.

[0059] The second intermediate plate 3b and the first intermediate plate 3a can be the same type of intermediate plate, or the second intermediate plate 3b and the first intermediate plate 3a can be two different types of intermediate plates. Optionally, please refer to... Figure 1 In this embodiment, the second intermediate plate 3b and the first intermediate plate 3a are the same type of bipolar plate (i.e., the fourth bipolar plate), meaning that the second intermediate plate 3b is identical to the first intermediate plate 3a. This also reduces the number of components in the electrolytic cell 100. The following description will use the second intermediate plate 3b as an example of the fourth bipolar plate.

[0060] The thickness of the second intermediate plate 3b can be equal to or unequal to the thickness of the third bipolar plate 2c. Optionally, please refer to [link / reference needed]. Figure 4b and Figure 5d In this embodiment, the thickness of the second intermediate plate 3b is greater than the thickness of the third bipolar plate 2c. This design, with the second intermediate plate 3b being thicker than the third bipolar plate 2c, improves the structural strength of the second intermediate plate 3b, allowing it to provide better support for the intermediate module 30.

[0061] Optionally, in other embodiments, the first module 10 further includes a third intermediate plate (not shown in the figure), which is stacked on the side of the first bipolar plate 2a away from the first electrode plate 1a of the first preset number of first bipolar plates 2a.

[0062] Specifically, the third intermediate plate has channels that form a smooth flow path for hydrogen, oxygen, and alkali solution. The third intermediate plate and the first intermediate plate 3a can be the same type of intermediate plate; for example, the third intermediate plate can be a fourth bipolar plate. Alternatively, the third intermediate plate and the first intermediate plate 3a can be two different types of intermediate plates. The thickness of the third intermediate plate can be equal to or unequal to the thickness of the first bipolar plate 2a; for example, the thickness of the third intermediate plate can be greater than the thickness of the first bipolar plate 2a.

[0063] The structural design of the first module 10 and the intermediate module 30 is rigorous and comprehensive. They are mainly composed of a base plate (i.e., the first electrode plate 1a or the fourth bipolar plate), a certain number of bipolar plates (i.e., the first bipolar plate 2a or the third bipolar plate 2c), and an optional top plate (i.e., the first electrode plate 1a or the fourth bipolar plate). When the first module 10 and the intermediate module 30 are equipped with a top plate, the sealing design during docking is fully considered during the design process.

[0064] Optionally, please refer to Figure 2a , Figure 4a and Figure 6a In this embodiment, the electrolytic cell 100 also includes a positioning pin 4. The positioning pin 4 can be set between two adjacent electrode plates of any module to achieve installation positioning between the two adjacent electrode plates; or the positioning pin 4 can be set between two adjacent modules of the electrolytic cell 100 to achieve installation positioning between the two adjacent modules.

[0065] Optionally, please refer to Figure 2a , Figure 2b , Figures 3a to 3d In this embodiment, the first module 10 further includes a positioning pin 4. A positioning pin 4 is provided between the first bipolar plate 2a closest to the first electrode plate 1a and the first electrode plate 1a, and between any two adjacent first bipolar plates 2a. A pin hole 5 for accommodating one end of the positioning pin 4 is provided on the two surfaces of the first electrode plate 1a and the two surfaces of the first bipolar plate 2a.

[0066] Specifically, the upper and lower surfaces of the first electrode plate 1a, and the upper and lower surfaces of the first bipolar plate 2a, are each provided with one or more pin holes 5 arranged circumferentially along the first electrode plate 1a. The pin holes 5 located on the upper surfaces of the first electrode plate 1a and the first bipolar plate 2a are used to accommodate the lower ends of the positioning pins 4, and the pin holes 5 located on the lower surfaces of the first electrode plate 1a and the first bipolar plate 2a are used to accommodate the upper ends of the positioning pins 4. In this way, positioning pins 4 can be provided between the bottommost first bipolar plate 2a and the first electrode plate 1a, and between any two adjacent first bipolar plates 2a, thereby realizing the installation and positioning between the first electrode plate 1a and the multiple first bipolar plates 2a during the assembly process of the first module 10.

[0067] Please see Figure 9a The module assembly base 400 serves as a foundational platform for assembling the first module 10, the second module 20, and the intermediate module 30, providing a stable and level working plane for the assembly of each module. The module assembly base 400 can withstand the weight of the modules and the forces exerted during assembly, ensuring that the modules will not shift or deform due to instability during assembly. Optionally, please refer to... Figure 2a , Figure 2b , Figures 3a to 3d In this embodiment, the working plane of the module assembly base 400 is provided with a pin hole 5 for accommodating one end of the positioning pin 4.

[0068] Specifically, the working plane of the module assembly base 400 is provided with one or more pin holes 5 arranged circumferentially along the first electrode plate 1a. The pin holes 5 located on the working plane of the module assembly base 400 are used to accommodate the lower end of the positioning pin 4. In this way, when the first module 10 is assembled through the module assembly base 400, the positioning pin 4 can be provided between the working plane of the module assembly base 400 and the first electrode plate 1a to realize the installation and positioning of the first electrode plate 1a on the module assembly base 400.

[0069] Optionally, please refer to Figure 4a , Figure 4b , Figures 5a to 5c In this embodiment, the second module 20 further includes a positioning pin 4. The positioning pin 4 is provided between the second bipolar plate 2b closest to the first intermediate plate 3a and the first intermediate plate 3a, between any two adjacent second bipolar plates 2b, and between the second bipolar plate 2b closest to the second electrode plate 1b. The two surfaces of the first intermediate plate 3a, the two surfaces of the second bipolar plate 2b, and the surface of the second electrode plate 1b closest to the second bipolar plate 2b are provided with pin holes 5 for accommodating one end of the positioning pin 4.

[0070] Specifically, one or more pin holes 5 are provided on the upper and lower surfaces of the first intermediate plate 3a, the upper and lower surfaces of the second bipolar plate 2b, and the lower surface of the second electrode plate 1b. The pin holes 5 on the upper surfaces of the first intermediate plate 3a and the second bipolar plate 2b are used to accommodate the lower ends of the positioning pins 4, and the pin holes 5 on the lower surfaces of the first intermediate plate 3a, the second bipolar plate 2b, and the second electrode plate 1b are used to accommodate the upper ends of the positioning pins 4. In this way, positioning pins 4 can be provided between the lowest second bipolar plate 2b and the first intermediate plate 3a, between any two adjacent second bipolar plates 2b, and between the highest second bipolar plate 2b and the second electrode plate 1b, thereby achieving the installation and positioning of the first intermediate plate 3a, the second electrode plate 1b, and the multiple second bipolar plates 2b during the assembly of the second module 20. Similarly, when assembling the second module 20 through the module assembly base 400, a positioning pin 4 can be provided between the working plane of the module assembly base 400 and the first intermediate plate 3a to realize the installation and positioning of the first intermediate plate 3a on the module assembly base 400.

[0071] Optionally, please refer to Figure 6a , Figure 6b , Figures 7a to 7c In this embodiment, the intermediate module 30 further includes a positioning pin 4. A positioning pin 4 is provided between the third bipolar plate 2c closest to the second intermediate plate 3b and the second intermediate plate 3b, and between any two adjacent third bipolar plates 2c. Pin holes 5 for accommodating one end of the positioning pin 4 are provided on the two surfaces of the second intermediate plate 3b and the two surfaces of the third bipolar plate 2c.

[0072] Specifically, one or more pin holes 5 are provided on the upper and lower surfaces of the second intermediate plate 3b and the upper and lower surfaces of the third intermediate plate 2c, arranged circumferentially along the second intermediate plate 3b. The pin holes 5 on the upper surfaces of the second intermediate plate 3b and the third intermediate plate 2c are used to accommodate the lower ends of the positioning pins 4, and the pin holes 5 on the lower surfaces of the second intermediate plate 3b and the third intermediate plate 2c are used to accommodate the upper ends of the positioning pins 4. In this way, positioning pins 4 can be provided between the bottommost third intermediate plate 2c and the second intermediate plate 3b, and between any two adjacent third intermediate plates 2c, thereby realizing the installation positioning between the second intermediate plate 3b and multiple third intermediate plates 2c during the assembly process of the intermediate module 30. Similarly, when assembling the intermediate module 30 through the module assembly base 400, positioning pins 4 can be provided between the working plane of the module assembly base 400 and the third intermediate plate 2c to realize the installation positioning of the third intermediate plate 2c on the module assembly base 400.

[0073] High-precision positioning pins 4 play an indispensable positioning role in the assembly process of the electrolytic cell 100. Pin holes 5 are cleverly designed at specific positions on the sealing surfaces of adjacent bipolar plates, ensuring they do not affect the sealing performance of the electrolytic cell 100. The high-precision pin hole clearance provides precise guidance for the bipolar plates, enabling accurate arrangement and positioning of multiple bipolar plates and effectively preventing potential misalignment or displacement during assembly. Furthermore, the positioning pins 4 are crucial for positioning between adjacent modules. Corresponding pin holes 5 are provided on the lower surface of the intermediate plate, and the high-precision pin hole fit ensures precise docking between the bipolar plates and the intermediate plate, guaranteeing the accuracy and stability of the entire electrolytic cell structure at a microscopic level. The positioning structure designed for the module assembly base 400 assists in the rapid and accurate positioning of modules, reducing adjustment time.

[0074] Optionally, please refer to Figure 2d , Figure 3a , Figure 3e and Figure 9b In this embodiment, the first electrode plate 1a is provided with a bottom connection structure for connecting with the first bottom chuck 210 of the first module clamping fixture 200.

[0075] Specifically, the first module 10 uses the first electrode plate 1a as a base and supports 30 to 70 first bipolar plates 2a, which can be tightly arranged under the action of the clamping fixture. During the integration of multiple modules, the clamping fixture can provide a stable clamping force to the first module 10, making the entire first module 10 a relatively independent and structurally stable unit, facilitating subsequent movement and overall assembly. The first electrode plate 1a is provided with a bottom connection structure for connecting with the bottom chuck of the clamping fixture. The bottom connection structure on the first electrode plate 1a can be a bottom threaded hole, a bottom pin hole, or a bottom slot, etc.

[0076] During the assembly of the first module 10, a stable clamping force can be provided to the first module 10 by the first module clamping fixture 200. Please refer to [link / reference]. Figure 9bThe first module clamping fixture 200 includes a first top clamp 220, a first bottom clamp 230, and a first pull rod 240. The telescopic first pull rod 240 is disposed between the first top clamp 220 and the first bottom clamp 230, and multiple first pull rods 240 are spaced apart along the circumference of the first top clamp 220. Both the first top clamp 220 and the first bottom clamp 230 are provided with first tension buckles 250, which allow the first top clamp 220 and the first bottom clamp 230 to be tightened and loosened. Multiple first bottom clamps 210 are spaced apart along the circumference of the first bottom clamp 230. Correspondingly, the bottom connection structure on the first electrode plate 1a is a bottom groove 6 into which the first bottom chuck 210 of the first module clamping fixture 200 is inserted. Multiple bottom grooves 6 are provided at intervals along the circumference of the first electrode plate 1a on its outer peripheral surface, and the bottom grooves 6 penetrate the lower plate surface of the first electrode plate 1a. When the first module clamping fixture 200 is assembled onto the first module 10, the first top clamp 220 and the first bottom clamp 230 can clamp the top and bottom of the first module 10 respectively. The first bottom chuck 210 is inserted into the bottom groove 6 of the first electrode plate 1a, and the first top clamp 220 abuts against the upper side of the upper end surface of the first module 10 (i.e., the upper plate surface of the uppermost first bipolar plate 2a). At this time, the first pull rod 240 is retracted, and the first module clamping fixture 200 can provide a stable clamping force for the first module 10.

[0077] Optionally, please refer to Figure 4d , Figure 5a , Figure 5d and Figure 9b In this embodiment, the second intermediate plate 3b is disposed on the side of the third bipolar plate 2c of the third preset number of plates close to the first module 10, and the second intermediate plate 3b is provided with a bottom connection structure for connecting with the first bottom chuck 210 of the clamping fixture 200 of the first module.

[0078] Specifically, the intermediate module 30 is based on the second intermediate plate 3b, and also supports 30 to 70 third bipolar plates 2c, integrated with clamping fixtures. The second intermediate plate 3b is provided with a bottom connection structure for connecting to the bottom chuck of the clamping fixture. This bottom connection structure can be a bottom threaded hole, a bottom pin hole, or a bottom slot, etc. For example, in this embodiment, the bottom connection structure on the second intermediate plate 3b is a bottom groove 6 into which the first bottom chuck 210 of the first module clamping fixture 200 is inserted. Multiple bottom grooves 6 are spaced along the circumference of the second intermediate plate 3b on its outer peripheral surface, and the bottom grooves 6 penetrate the lower surface of the second intermediate plate 3b. During the assembly of the intermediate module 30, the first module clamping fixture 200 can provide a stable clamping force to the intermediate module 30. When the first module clamping fixture 200 is assembled onto the intermediate module 30, the first top clamp 220 and the first bottom clamp 230 can clamp the top and bottom of the intermediate module 30 respectively. The first bottom clamp 210 is inserted into the bottom groove 6 of the second intermediate plate 3b. The first top clamp 220 abuts against the upper side of the upper end surface of the intermediate module 30 (i.e., the upper plate surface of the uppermost third bipolar plate 2c). At this time, the first pull rod 240 is retracted, and the first module clamping fixture 200 can provide a stable clamping force to the intermediate module 30.

[0079] Optionally, please refer to Figure 6d , Figure 7a , Figure 7d , Figure 7e , Figure 7f and Figure 9c In this embodiment, the first intermediate plate 3a is provided with a bottom connection structure for connecting with the second bottom chuck 310 of the second module clamping fixture 300, and the second pole plate 1b is provided with a top connection structure for connecting with the top chuck 320 of the second module clamping fixture 300.

[0080] Specifically, the second module 20 is mounted on the first intermediate plate 3a with a second bipolar plate 2b and capped by a second electrode plate 1b. Integration is achieved through a clamping fixture. The second electrode plate 1b is not only a key component for current output but also closely related to the overall structural stability. The first intermediate plate 3a has a bottom connection structure for connecting to the bottom clamp of the clamping fixture. This bottom connection structure can be a bottom threaded hole, a bottom pin hole, or a bottom slot, etc. Similarly, the second electrode plate 1b has a top connection structure for connecting to the top clamp of the clamping fixture. This top connection structure can be a top threaded hole, a top pin hole, or a top slot, etc.

[0081] During the assembly of the second module 20, a stable clamping force can be provided to the second module 20 using the second module clamping fixture 300. Please refer to [link / reference]. Figure 9cThe second module clamping fixture 300 includes a second top clamp 330, a second bottom clamp 340, and a second pull rod 350. The telescopic second pull rod 350 is disposed between the second top clamp 330 and the second bottom clamp 340, and multiple second pull rods 350 are spaced apart along the circumference of the second top clamp 330. Both the second top clamp 330 and the second bottom clamp 340 are provided with second tension buckles 360, which allow the second top clamp 330 and the second bottom clamp 340 to be tightened and loosened. Multiple top clamps 320 are spaced apart along the circumference of the second top clamp 330, and multiple second bottom clamps 310 are spaced apart along the circumference of the second bottom clamp 340. Correspondingly, the bottom connecting structure on the first intermediate plate 3a is a bottom groove 6 into which the second bottom chuck 310 of the second module clamping fixture 300 is inserted. Multiple bottom grooves 6 are provided at intervals along the circumference of the first intermediate plate 3a on the outer peripheral surface of the first intermediate plate 3a, and the bottom grooves 6 penetrate the lower plate surface of the first electrode plate 1a. The top connecting structure on the second electrode plate 1b is a top groove 7 into which the top chuck 320 of the second module clamping fixture 300 is inserted. Multiple top grooves 7 are provided at intervals along the circumference of the second electrode plate 1b on the outer peripheral surface of the second electrode plate 1b, and the top grooves 7 penetrate the upper plate surface of the second electrode plate 1b. When the second module clamping fixture 300 is assembled onto the second module 20, the second top clamp 330 and the second bottom clamp 340 can clamp the top and bottom of the second module 20 respectively. The top chuck 320 is inserted into the top groove 7 of the second pole plate 1b, and the second bottom chuck 310 is inserted into the bottom groove 6 of the first intermediate plate 3a. At this time, the second pull rod 350 is retracted, and the second module clamping fixture 300 can provide a stable clamping force for the second module 20.

[0082] The following description uses the bottom connecting structure of the first electrode plate 1a, the first intermediate plate 3a, and the second intermediate plate 3b as the bottom groove 6, and the top connecting structure of the second electrode plate 1b as the top groove 7 as an example. Grooves (bottom groove 6 or top groove 7) are provided around the first electrode plate 1a, the second electrode plate 1b, the first intermediate plate 3a, and the second intermediate plate 3b. These grooves serve as module integration interfaces, providing a reliable connection basis for precise docking between different modules, ensuring that each module fits perfectly into a whole when assembled. The module-specific clamping fixture (first module clamping fixture 200 or second module clamping fixture 300) is scientifically designed and multifunctional. Through the tightening action of the screws (first pull rod 240 or second pull rod 350), the module clamping integration is achieved. In addition to its integration function, the module-specific clamping fixture plays an indispensable role in the movement and hoisting process. The module-specific clamping fixture is equipped with lifting points, facilitating hoisting and movement operations between different workstations, greatly improving the flexibility and convenience of the assembly process.

[0083] Optionally, please refer to Figure 1 In this embodiment, the connecting mechanism 40 includes a first end plate 41, a second end plate 42, and a fastening screw 43. The first end plate 41 is stacked on the side of the first module 10 near the first electrode plate 1a; the second end plate 42 is stacked on the side of the second module 20 near the second electrode plate 1b; the two ends of the fastening screw 43 are respectively connected to the first end plate 41 and the second end plate 42. Multiple fastening screws 43 are arranged at intervals along the circumference of the electrolytic cell 100. A fastening nut 44 is provided at the end of the fastening screw 43 near the first end plate 41 and located on the side of the first end plate 41 away from the second end plate 42, and at the end of the fastening screw 43 near the second end plate 42 and located on the side of the second end plate 42 away from the first end plate 41.

[0084] Specifically, the first end plate 41 is the negative end plate, and the second end plate 42 is the positive end plate. The first end plate 41 abuts against the lower side of the first module 10, and the second end plate 42 abuts against the upper side of the second module 20. Multiple fastening screws 43 are provided between the first end plate 41 and the second end plate 42, and these screws 43 are arranged around the periphery of each module. The lower end of each fastening screw 43 passes downward through the first end plate 41 and is fitted with a fastening nut 44, while the upper end of each fastening screw 43 passes upward through the second end plate 42 and is also fitted with a fastening nut 44. By tightening the fastening nuts 44 on the multiple fastening screws 43, the multiple modules between them can be clamped together by the first end plate 41 and the second end plate 42.

[0085] In the overall assembly of the electrolytic cell 100, following a rigorous and orderly process, the first end plate 41 is installed first to build the initial framework for the assembly of the entire electrolytic cell 100; then the first module 10, the intermediate module 30, and the second module 20 are installed in sequence to gradually build the core structure of the electrolytic cell 100; finally, the second end plate 42 is installed and the fastening screws 43 are tightened to make the entire electrolytic cell structure secure and stable. After completing these basic assembly steps, the subsequent electrolytic cell production process can proceed smoothly.

[0086] Compared with existing technologies, the electrolytic cell 100 has the following advantages: 1. Using the first electrode plate 1a, the first intermediate plate 3a, and the second intermediate plate 3b as the support structure for the first module 10, the second module 20, and the intermediate module 30, dozens or hundreds of bipolar plates can be stacked and assembled based on this support structure; 2. Multiple modules can be stacked and assembled simultaneously, improving assembly efficiency; 3. High-precision positioning pins 4 are used for positioning between adjacent bipolar plates, and multiple positioning pins 4 are used to control the positional deviation between adjacent bipolar plates; 4. Multiple modules are guided by multiple high-precision positioning pins 4 to complete the assembly of the entire electrolytic cell 100; 5. High-precision positioning pins 4 are used between modules to control the positional deviation between adjacent modules, ensuring overall assembly accuracy; 6. The electrolytic cell 100 can select vertical or horizontal assembly of modules according to the height and space of the plant, reducing the height requirements of the electrolytic cell 100 for the plant.

[0087] Accordingly, another embodiment of the present invention also provides a method for manufacturing an electrolytic cell, which can be used to manufacture the electrolytic cell provided in the above embodiments. The manufacturing method of the electrolytic cell provided in another embodiment of the present invention will be described in detail below. For parts that are the same as or corresponding to the previous embodiment, please refer to the corresponding descriptions of the foregoing embodiments; detailed descriptions will not be repeated below.

[0088] Please see Figure 8a and Figure 8b In this embodiment, the method for manufacturing an electrolytic cell includes the following steps S100 and S200.

[0089] Step S100: Use the first module clamping fixture 200 and the second module clamping fixture 300 to assemble the first module 10 and the second module 20 respectively to obtain the first integrated body 50 and the second integrated body 60.

[0090] Specifically, the first integrated body 50 is a first module 10 equipped with a first module clamping fixture 200, for clamping the first module 10 by the first module clamping fixture 200; the second integrated body 60 is a second module 20 equipped with a second module clamping fixture 300, for clamping the second module 20 by the second module clamping fixture 300. Step S100 includes: Step S110: assembling the first module 10 using the first module clamping fixture 200 to obtain the first integrated body 50; Step S130: assembling the second module 20 using the second module clamping fixture 300 to obtain the second integrated body 60. When the electrolytic cell 100 further includes an intermediate module 30, before step S200, the manufacturing method of the electrolytic cell further includes: step S120: assembling at least one intermediate module 30 using a first module clamping fixture 200 to obtain at least one intermediate integrated body 70, wherein the intermediate integrated body 70 is an intermediate module 30 assembled with the first module clamping fixture 200, so as to clamp the intermediate module 30 by the first module clamping fixture 200.

[0091] Optionally, please refer to Figures 2a to 2f In this embodiment, step S110 includes steps S111 to S116.

[0092] Step S111: Install the positioning pin 4 at the pin hole 5 on the upper surface of the module assembly base 400.

[0093] Specifically, please refer to Figure 9a The upper surface of the module assembly base 400 is provided with a working plane and pin holes 5. Support feet 420 are provided at the bottom of the module assembly base 400. Each support foot 420 has a threaded adjustment mechanism, and multiple support feet 420 are spaced apart along the circumference of the module assembly base 400. This allows for pre-adjustment of the flatness of the module assembly base 400 before step S111, ensuring that the working plane of the module assembly base 400 meets the flatness limit for module stacking. After adjusting the flatness of the module assembly base 400, the positioning pins 4 are installed into the pin holes 5 on the upper surface of the module assembly base 400. The support structure of the module assembly base 400 (i.e., the support feet 420) adopts a threaded rod design. Through the adjustment function of the threaded rod, the flatness of the module assembly base 400 can be finely adjusted, precisely adjusting the levelness of the module assembly reference surface to within a specified range, laying the foundation for subsequent precise module assembly. Pin holes 5 are provided on the upper surface of the module assembly base 400. These pin holes 5 can achieve precise positioning and engagement with the intermediate plate and the first pole plate 1a through the positioning pins 4, which further improves the accuracy of the entire assembly structure.

[0094] Step S112: Install the positioning pin 4 at the pin hole 5 on the upper surface of the first electrode plate 1a, and guide the first electrode plate 1a onto the module assembly base 400 through the positioning pin 4 on the module assembly base 400.

[0095] Specifically, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the first electrode plate 1a, and the pin hole 5 on the lower surface of the first electrode plate 1a is aligned with the positioning pin 4 on the module assembly base 400. Then, the first electrode plate 1a is guided and installed onto the module assembly base 400 by the positioning pin 4 on the module assembly base 400.

[0096] Step S113: Install positioning pins 4 at the pin holes 5 on the upper surface of the first preset number of first bipolar plates 2a, and sequentially stack the first preset number of first bipolar plates 2a onto the first electrode plate 1a by means of the positioning pins 4, to obtain the first module 10.

[0097] Specifically, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the first bipolar plate 2a, and the pin hole 5 on the lower surface of the first bipolar plate 2a is aligned with the positioning pin 4 on the first electrode plate 1a. Then, the first bipolar plate 2a is guided and installed onto the first electrode plate 1a by the positioning pin 4 on the first electrode plate 1a.

[0098] Install the positioning pin 4 into the pin hole 5 on the upper surface of the second-layer first bipolar plate 2a, and align the pin hole 5 on the lower surface of the second-layer first bipolar plate 2a with the positioning pin 4 on the first-layer first bipolar plate 2a. Then, guide the second-layer first bipolar plate 2a onto the first-layer first bipolar plate 2a using the positioning pin 4. Repeat the above operation until the first bipolar plates 2a are stacked to the specified number of layers to obtain the first module 10.

[0099] Step S114: Insert the first bottom clamp 210 of the first module clamping fixture 200 into the bottom groove 6 of the first electrode plate 1a, and press the first top clamp 220 of the first module clamping fixture 200 against the edge of the upper end face of the first module 10, and then tighten the first module clamping fixture 200.

[0100] Specifically, when the first module clamping fixture 200 is assembled onto the first module 10, the first top clamp 220 and the first bottom clamp 230 can clamp the top and bottom of the first module 10 respectively, the first bottom chuck 210 is inserted into the bottom groove 6 of the first electrode plate 1a, and the first top clamp 220 abuts against the upper side of the upper end surface of the first module 10 (i.e., the upper plate surface of the uppermost first bipolar plate 2a). At this time, the first pull rod 240 is retracted, and the first module clamping fixture 200 can provide a stable clamping force to the first module 10.

[0101] Step S115: Install the module clamping fixture 500 onto the interface 410 of the module assembly base 400, and press down on the upper surface of the first module 10 through the module clamping fixture 500 until the downward pressure of the module clamping fixture 500 reaches the first preset pressure value.

[0102] Specifically, pre-compressing the modules using clamping fixtures is a crucial step in the module assembly process. After compression, the clamping fixtures should be installed promptly to maintain the compressed state of the modules in a long-term manner. The clamping force has been precisely calculated and verified through extensive practical application, and its range is set at 2~10t (i.e., the first preset pressure value is 2~10t). Appropriate clamping force ensures a tight fit between the bipolar plates. Please refer to [link / reference]. Figure 9a The upper surface of the module assembly base 400 is provided with an interface 410. When the clamping fixture is running, the interface 410 acts as a reaction force support, providing a reliable point of force for the effective transmission and uniform distribution of the clamping force, ensuring that each bipolar plate inside the module can fit tightly together.

[0103] Please see Figure 9d The module clamping fixture 500 includes a pressure plate 520, a support frame 540, and a drive rod 550. The drive rod 550 is movably mounted on top of the support frame 540. The pressure plate 520 is located at the lower end of the drive rod 550. The upper end of the drive rod 550 is used to connect a drive device (not shown in the figure) to drive the drive rod 550 and the pressure plate 520 to move up and down together. The top of the support frame 540 is provided with a lifting lug 530, and the bottom of the support frame 540 is provided with a flange 510.

[0104] The module clamping fixture 500 is installed onto the interface 410 of the module assembly base 400 using the lifting lug 530, and the flange 510 mating with the interface 410 is tightened. The module clamping fixture 500 is driven by the drive device to bring the pressure plate 520 into contact with the outer sealing surface of the upper end face of the first module 10. The pressure plate 520 continues to apply downward force to the first module 10 until a first preset pressure value is reached, in order to eliminate the initial gap between the first bipolar plates 2a inside the first module 10.

[0105] The module clamping fixture 500 offers multiple drive options, including hydraulic cylinder drive for powerful and stable clamping force, and lead screw, pneumatic, or electric drive, allowing for flexible selection based on assembly requirements and working conditions. The pressure plate 520 can employ a ring design, ensuring even pressure distribution through the topmost electrode plate (first bipolar plate 2a, third bipolar plate 2c, or second electrode plate 1b) during operation. This guarantees uniform pressure distribution throughout the module, preventing assembly quality issues caused by excessive or insufficient local pressure. The support structure is also highly flexible. It can be installed on the module assembly base 400, fully utilizing its stability and reaction force support capabilities; or it can be placed on the ground or other structures, rationally arranged according to the actual assembly layout and space conditions, serving as the reaction point for the pressure applied by the module clamping fixture 500 to ensure smooth clamping.

[0106] Step S116: Tighten the first module clamping fixture 200 again and remove the module clamping fixture 500 to obtain the first integrated body 50.

[0107] Specifically, firstly, the first module clamping fixture 200 assembled onto the first module 10 is tightened again, tightening the first top clamp 220 and the first bottom clamp 230 of the first module clamping fixture 200, and the first pull rod 240 is tightened repeatedly. Then, the pressure of the module clamping fixture 500 is released so that the internal force of the first module 10 is transferred to the first module clamping fixture 200, and then the module clamping fixture 500 is removed. Thus, the first module 10 is assembled, and the integrated body of the first module 10 and the first module clamping fixture 200 is obtained, namely the first integrated body 50.

[0108] Optionally, please refer to Figures 4a to 4f In this embodiment, step S120 includes steps S121 to S126.

[0109] Step S121: Install the positioning pin 4 at the pin hole 5 on the upper surface of the module assembly base 400.

[0110] Specifically, after adjusting the flatness of the module assembly base 400 using the support foot 420, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the module assembly base 400.

[0111] Step S122: Install the positioning pin 4 at the pin hole 5 on the upper surface of the second intermediate plate 3b, and guide the second intermediate plate 3b onto the module assembly base 400 through the positioning pin 4 on the module assembly base 400.

[0112] Specifically, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the second intermediate plate 3b, and the pin hole 5 on the lower surface of the second intermediate plate 3b is aligned with the positioning pin 4 on the module assembly base 400. Then, the second intermediate plate 3b is guided and installed onto the module assembly base 400 by the positioning pin 4 on the module assembly base 400.

[0113] Step S123: Install positioning pins 4 at the pin holes 5 on the upper surface of the third bipolar plates 2c of the third preset number, and stack the third bipolar plates 2c of the third preset number sequentially onto the second intermediate plate 3b by means of the positioning pins 4 to obtain the intermediate module 30.

[0114] Specifically, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the first layer third bipolar plate 2c, and the pin hole 5 on the lower surface of the first layer third bipolar plate 2c is aligned with the positioning pin 4 on the second intermediate plate 3b. Then, the first layer third bipolar plate 2c is guided and installed onto the second intermediate plate 3b by the positioning pin 4 on the second intermediate plate 3b.

[0115] Install the positioning pin 4 into the pin hole 5 on the upper surface of the second-layer third bipolar plate 2c, and align the pin hole 5 on the lower surface of the second-layer third bipolar plate 2c with the positioning pin 4 on the first-layer third bipolar plate 2c. Then, guide the second-layer third bipolar plate 2c onto the first-layer third bipolar plate 2c using the positioning pin 4 on the first-layer third bipolar plate 2c. Repeat the above operation until the third bipolar plates 2c are stacked to the specified number of layers to obtain the intermediate module 30.

[0116] Step S124: Insert the first bottom clamp 210 of the first module clamping fixture 200 into the bottom groove 6 of the second intermediate plate 3b, and press the first top clamp 220 of the first module clamping fixture 200 onto the edge of the upper end face of the intermediate module 30, and then tighten the first module clamping fixture 200.

[0117] Specifically, when the first module clamping fixture 200 is assembled onto the intermediate module 30, the first top clamp 220 and the first bottom clamp 230 can clamp the top and bottom of the intermediate module 30 respectively. The first bottom clamp 210 is inserted into the bottom groove 6 of the second intermediate plate 3b, and the first top clamp 220 abuts against the upper side of the upper end surface of the intermediate module 30 (i.e., the upper plate surface of the uppermost third bipolar plate 2c). At this time, the first pull rod 240 is retracted, and the first module clamping fixture 200 can provide a stable clamping force to the intermediate module 30.

[0118] Step S125: Install the module clamping fixture 500 onto the interface 410 of the module assembly base 400, and press down on the upper end face of the intermediate module 30 through the module clamping fixture 500 until the downward pressure of the module clamping fixture 500 reaches the third preset pressure value.

[0119] Specifically, the module clamping fixture 500 is installed onto the interface 410 of the module assembly base 400 using the lifting lug 530, and the flange 510 mating with the interface 410 is tightened. The module clamping fixture 500 is driven by the drive device to bring the pressure plate 520 into contact with the outer sealing surface of the upper end face of the intermediate module 30. The pressure plate 520 continues to apply downward force to the intermediate module 30 until a third preset pressure value is reached (the third preset pressure value can be 2~10t), in order to eliminate the initial gap between the third bipolar plates 2c inside the intermediate module 30.

[0120] Step S126: Tighten the first module clamping fixture 200 again and remove the module clamping fixture 500 to obtain the intermediate integrated body 70.

[0121] Specifically, firstly, the first module clamping fixture 200 assembled onto the intermediate module 30 is tightened again, tightening the first top clamp 220 and the first bottom clamp 230 of the first module clamping fixture 200, and the first pull rod 240 is tightened repeatedly. Then, the pressure of the module clamping fixture 500 is released so that the internal force of the intermediate module 30 is transferred to the first module clamping fixture 200, and then the module clamping fixture 500 is removed. In this way, the intermediate module 30 is assembled, and the integrated body of the intermediate module 30 and the first module clamping fixture 200 is obtained, namely the intermediate integrated body 70.

[0122] Optionally, please refer to Figures 6a to 6f In this embodiment, step S130 includes steps S131 to S137.

[0123] Step S131: Install the positioning pin 4 at the pin hole 5 on the upper surface of the module assembly base 400.

[0124] Specifically, after adjusting the flatness of the module assembly base 400 using the support foot 420, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the module assembly base 400.

[0125] Step S132: Install the positioning pin 4 at the pin hole 5 on the upper surface of the first intermediate plate 3a, and guide the first intermediate plate 3a onto the module assembly base 400 through the positioning pin 4 on the module assembly base 400.

[0126] Specifically, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the first intermediate plate 3a, and the pin hole 5 on the lower surface of the first intermediate plate 3a is aligned with the positioning pin 4 on the module assembly base 400. Then, the first intermediate plate 3a is guided and installed onto the module assembly base 400 by the positioning pin 4 on the module assembly base 400.

[0127] Step S133: Install positioning pins 4 at the pin holes 5 on the upper surface of the second bipolar plates 2b of the second preset number, and sequentially stack the second bipolar plates 2b onto the first intermediate plate 3a by means of the positioning pins 4.

[0128] Specifically, the positioning pin 4 is installed into the pin hole 5 on the upper surface of the first layer second bipolar plate 2b, and the pin hole 5 on the lower surface of the first layer second bipolar plate 2b is aligned with the positioning pin 4 on the first intermediate plate 3a. Then, the first layer second bipolar plate 2b is guided and installed onto the first intermediate plate 3a by the positioning pin 4 on the first intermediate plate 3a.

[0129] Install the locating pin 4 into the pin hole 5 on the upper surface of the second bipolar plate 2b, and align the pin hole 5 on the lower surface of the second bipolar plate 2b with the locating pin 4 on the first bipolar plate 2b. Then, guide the second bipolar plate 2b onto the first bipolar plate 2b using the locating pin 4 on the first bipolar plate 2b. Repeat the above operation until the second bipolar plates 2b are stacked to the specified number of layers.

[0130] Step S134: The second electrode plate 1b is guided and installed onto the uppermost second bipolar plate 2b by the positioning pin 4 located on the uppermost second bipolar plate 2b, thus obtaining the second module 20.

[0131] Specifically, after aligning the pin hole 5 on the lower surface of the second electrode plate 1b with the positioning pin 4 on the uppermost second bipolar plate 2b, the second electrode plate 1b is guided and installed onto the second bipolar plate 2b through the positioning pin 4 on the uppermost second bipolar plate 2b, thus obtaining the second module 20.

[0132] Step S135: Insert the second bottom chuck 310 and the top chuck 320 of the second module clamping fixture 300 into the bottom groove 6 of the first intermediate plate 3a and the top groove 7 of the second pole plate 1b, respectively, and then tighten the second module clamping fixture 300.

[0133] Specifically, when the second module clamping fixture 300 is assembled onto the second module 20, the second top clamp 330 and the second bottom clamp 340 can clamp the top and bottom of the second module 20 respectively. The top chuck 320 is inserted into the top groove 7 of the second pole plate 1b, and the second bottom chuck 310 is inserted into the bottom groove 6 of the first intermediate plate 3a. At this time, the second pull rod 350 is retracted, and the second module clamping fixture 300 can provide a stable clamping force for the second module 20.

[0134] Step S136: Install the module clamping fixture 500 onto the interface 410 of the module assembly base 400, and press down on the upper surface of the second module 20 through the module clamping fixture 500 until the downward pressure of the module clamping fixture 500 reaches the second preset pressure value.

[0135] Specifically, the module clamping fixture 500 is installed onto the interface 410 of the module assembly base 400 using the lifting lug 530, and the flange 510 mating with the interface 410 is tightened. The module clamping fixture 500 is driven by the driving device to bring the pressure plate 520 into contact with the outer sealing surface of the upper end face of the second module 20. The pressure plate 520 continues to apply downward force to the second module 20 until a second preset pressure value is reached (the second preset pressure value can be 2~10t), in order to eliminate the initial gap between the second bipolar plates 2b inside the second module 20.

[0136] Step S137: Tighten the second module clamping fixture 300 again and remove the module clamping fixture 500 to obtain the second integrated body 60.

[0137] Specifically, first, the second module clamping fixture 300, which is assembled onto the second module 20, is tightened again. The second top clamp 330 and the second bottom clamp 340 of the second module clamping fixture 300 are tightened, and the second pull rod 350 is tightened again. Then, the pressure of the module clamping fixture 500 is released so that the internal force of the second module 20 is transferred to the second module clamping fixture 300. After that, the module clamping fixture 500 is removed. Thus, the assembly of the second module 20 is completed, resulting in the integrated body of the second module 20 and the second module clamping fixture 300, namely the second integrated body 60.

[0138] The module clamping fixture 500 is designed to address potential gaps between bipolar plates within a module. By applying uniform pressure, the fixture ensures a tight fit between the bipolar plates, while also enhancing the structural stability and sealing of the entire electrolytic cell 100. This improves the performance and reliability of the entire electrolytic cell system, offering significant advantages and broad application prospects in the efficient and high-precision assembly of high-pressure alkaline electrolytic cells.

[0139] Step S200: Stack and assemble the first integrated body 50 and the second integrated body 60 along a preset direction, and remove the first module clamping fixture 200 and the second module clamping fixture 300 to obtain the electrolytic cell 100.

[0140] Specifically, the preset direction can be a vertical direction or a horizontal direction, etc. When the electrolytic cell 100 also includes an intermediate integrated body 70, step S200 includes: stacking and assembling the first integrated body 50, at least one intermediate integrated body 70 and the second integrated body 60 along the preset direction, and removing the first module clamping fixture 200 and the second module clamping fixture 300 to obtain the electrolytic cell 100.

[0141] Optionally, please refer to Figure 8a and Figure 8bIn this embodiment, step S200 includes: stacking the first integrated body 50, a plurality of intermediate integrated bodies 70 and the second integrated body 60 along a preset direction and assembling them with the connecting mechanism 40, and removing the first module clamping fixture 200 and the second module clamping fixture 300 to obtain the electrolytic cell 100.

[0142] Optionally, please refer to Figure 8a and Figure 8b In this embodiment, step S200 includes steps S210 to S260.

[0143] Step S210: Install the first end pressure plate 41 onto the stacking base 600 along the preset direction.

[0144] Step S220: Stack the first integrated body 50 onto the first end plate 41 along a preset direction.

[0145] Step S230: Stack several intermediate integrated bodies 70 sequentially onto the first integrated body 50 along a preset direction.

[0146] Step S240: Stack the second integrated body 60 along a preset direction onto an intermediate integrated body 70 that is furthest from the first integrated body 50.

[0147] Step S250: Stack and install the second end pressure plate 42 onto the second integrated body 60 along a preset direction.

[0148] Step S260: Install fastening screws 43 between the first end pressure plate 41 and the second end pressure plate 42, and remove the first module clamping fixture 200 and the second module clamping fixture 300 to obtain the electrolytic cell 100.

[0149] Specifically, firstly, along the vertical or horizontal direction, the first end plate 41, the first integrated body 50, several intermediate integrated bodies 70, and the second integrated body 60 are sequentially installed onto the stacking base 600; then, the first module clamping fixture 200 and the second module clamping fixture 300 on the first integrated body 50, several intermediate integrated bodies 70, and the second integrated body 60 are removed, and the fastening screws 43 are installed, thus forming the electrolytic cell 100.

[0150] This invention first optimizes the assembly process of the electrolytic cell 100 by meticulously reviewing all its components and re-planning the installation sequence based on their functions and installation logic. For example, highly related components with strict coordination requirements are grouped together. Small components are first precisely assembled on the modular assembly base 400 to form relatively independent and stable modules. Multiple modules are then assembled and combined. This significantly reduces on-site adjustments during overall installation, allowing modules to be quickly installed in a predetermined order, thereby improving assembly efficiency. In terms of structural design, innovative designs address aspects prone to precision issues in traditional assembly. For instance, a unique structure of positioning pins 4 and pin holes 5 is designed for the positioning and connection between bipolar plates. The positioning pins 4 are manufactured using high-precision machining, with their diameter tolerance controlled within a very small range. The size and shape of the pin holes 5 are also optimized, ensuring a perfect fit between the two. During assembly, the positioning pin 4 can be easily inserted into the pin hole 5, and the precise positioning of the bipolar plate is achieved through the cooperation, which effectively avoids the problem of bipolar plate misalignment caused by the difference in bolt tightening sequence and force in traditional assembly, and greatly improves the assembly accuracy.

[0151] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. An electrolytic cell, characterized in that, include: The first module includes a first electrode plate and a first preset number of first bipolar plates stacked sequentially. The second module is stacked on the side of the first module away from the first electrode plate. The second module includes a second preset number of second bipolar plates and second electrode plates stacked sequentially. The second electrode plate is located on the side of the second preset number of second bipolar plates away from the first module. One of the second electrode plate and the first electrode plate is a positive electrode plate and the other is a negative electrode plate.

2. The electrolytic cell according to claim 1, characterized in that, The second module also includes a first intermediate plate, which is located on the side of the second bipolar plate of a second preset number that is close to the first module.

3. The electrolytic cell according to claim 2, characterized in that, The thickness of the first intermediate plate is greater than the thickness of the second bipolar plate.

4. The electrolytic cell according to claim 2, characterized in that, The electrolytic cell also includes an intermediate module, which is stacked between the first module and the second module; The intermediate module includes a second intermediate plate stacked together and a third predetermined number of third bipolar plates, wherein the third predetermined number of third bipolar plates are provided with the second intermediate plate on the side closer to the first module and / or on the side closer to the second module.

5. The electrolytic cell according to claim 4, characterized in that, The thickness of the second intermediate plate is greater than the thickness of the third bipolar plate.

6. The electrolytic cell according to claim 4, characterized in that, Both the first intermediate plate and the second intermediate plate are fourth bipolar plates.

7. The electrolytic cell according to claim 4, characterized in that, The first bipolar plate, the second bipolar plate, and the third bipolar plate are the same type of bipolar plate.

8. The electrolytic cell according to claim 4, characterized in that, The intermediate modules are stacked in 2 to 6 units along the stacking direction of the electrolytic cell; and / or, The first module includes 30 to 70 of the first bipolar plates; and / or, The second module includes 30 to 70 second bipolar plates; and / or, The intermediate module includes 30 to 70 of the third bipolar plates.

9. The electrolytic cell according to claim 4, characterized in that, The electrolytic cell also includes positioning pins, wherein: The positioning pin is provided between the first bipolar plate closest to the first electrode plate and between any two adjacent first bipolar plates; pin holes for receiving one end of the positioning pin are provided on the two surfaces of the first electrode plate and the two surfaces of the first bipolar plate; and / or, The positioning pin is provided between the second bipolar plate closest to the first intermediate plate and the first intermediate plate, between any two adjacent second bipolar plates, and between the second bipolar plate closest to the second bipolar plate and the second bipolar plate. Pin holes for accommodating one end of the positioning pin are provided on the two surfaces of the first intermediate plate, the two surfaces of the second bipolar plates, and the surface of the second bipolar plate closest to the second bipolar plate; and / or, The positioning pin is provided between the third bipolar plate closest to the second intermediate plate and the second intermediate plate, and between any two adjacent third bipolar plates. The two surfaces of the second intermediate plate and the two surfaces of the third bipolar plate are provided with pin holes for accommodating one end of the positioning pin.

10. The electrolytic cell according to claim 4, characterized in that, The second intermediate plate is disposed on the side of the third bipolar plate of the third preset number that is close to the first module, and the second intermediate plate is provided with a bottom connection structure for connecting with the first bottom chuck of the clamping fixture of the first module.

11. The electrolytic cell according to claim 1, characterized in that, The first electrode plate is provided with a bottom connection structure for connecting with the first bottom chuck of the first module clamping fixture.

12. The electrolytic cell according to claim 2, characterized in that, The first intermediate plate is provided with a bottom connection structure for connecting with the second bottom chuck of the second module clamping fixture, and the second pole plate is provided with a top connection structure for connecting with the top chuck of the second module clamping fixture.

13. The electrolytic cell according to claim 12, characterized in that, The top connection structure is a top groove for the top chuck of the second module clamping fixture to be inserted; and / or, The bottom connection structure is a bottom groove into which the first bottom chuck of the first module clamping fixture or the second bottom chuck of the second module clamping fixture is inserted.

14. The electrolytic cell according to claim 1, characterized in that, The electrolytic cell further includes a connecting mechanism; the connecting mechanism connects the first module and the second module to fix the electrolytic cell in the stacking direction of the electrolytic cell.

15. The electrolytic cell according to claim 14, characterized in that, The connecting mechanism includes: The first end pressure plate is stacked on the side of the first module near the first electrode plate; The second end pressure plate is stacked on the side of the second module near the second electrode plate; A fastening screw is provided, with its two ends connected to the first end pressure plate and the second end pressure plate, respectively. Multiple fastening screws are arranged at intervals along the circumference of the electrolytic cell. A fastening nut is provided at the end of the fastening screw near the first end pressure plate and on the side of the first end pressure plate away from the second end pressure plate, and at the end of the fastening screw near the second end pressure plate and on the side of the second end pressure plate away from the first end pressure plate.

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