Pole frame assembly and electrolytic cell

Abstract

This utility model belongs to the field of water electrolysis hydrogen production technology, and discloses an electrode frame assembly and an electrolyzer. The electrode frame assembly includes an electrode frame body and a flow guide. The electrode frame body is provided with flow channel holes. The flow guide includes a first segment and a second segment connected to each other. The first segment is embedded in the flow channel holes of the electrode frame, and the first segment is provided with a main electrolyte channel. The second segment is provided with a secondary electrolyte channel, which communicates with the main electrolyte channel. This utility model reduces the processing steps of the frame body, eliminates the need for additional pressing plates, and improves the assembly efficiency of the electrolyzer.

Description

Technical Field

[0001] This utility model relates to the field of water electrolysis hydrogen production technology, and in particular to electrode frame components and electrolyzers. Background Technology

[0002] Hydrogen, as an energy form with great development potential, possesses remarkable characteristics of being extremely clean and efficient. It falls under the category of renewable energy and occupies a crucial position in the future energy structure transformation. Among numerous hydrogen production technologies, water electrolysis has become one of the current research and application hotspots due to its high maturity and pure products. Within the core equipment system of water electrolysis hydrogen production technology, the electrolyzer is undoubtedly the most critical component; its performance directly determines key indicators such as hydrogen production efficiency, cost, and stability.

[0003] Looking closely at the internal structure of the electrolyzer, the electrode frame and the pressing plate are two crucial components. The electrode frame itself is uniquely designed, with multiple flow channels carefully formed on its surface. These channels are intended to achieve a uniform distribution of the electrolyte. The pressing plate is typically welded or bonded, precisely covering these flow channels. During normal operation of the electrolyzer, the electrolyte from the flow channels in the electrode frame flows along a predetermined path, evenly distributed throughout the electrolysis chamber via the machined flow channels, thus ensuring that the electrolysis reaction proceeds efficiently and stably throughout the entire electrolysis chamber.

[0004] However, the existing electrolyzer structure design has also revealed some significant problems in practical applications. Firstly, from the perspective of electrode frame manufacturing, the need to additionally machine flow-guiding grooves corresponding to the distribution channels on the electrode frame body complicates the manufacturing process. What was originally a simple manufacturing process now requires more equipment and time due to the addition of the flow-guiding groove machining step. More importantly, this additional machining can compromise the original structural integrity of the electrode frame body, leading to a reduction in its structural strength. During long-term operation of the electrolyzer, the electrode frame body needs to withstand various forces such as electrolyte pressure, temperature changes, and potential mechanical vibrations. Reduced structural strength undoubtedly increases the risk of damage, thus affecting the electrolyzer's service life and the stability of hydrogen production.

[0005] Secondly, the current methods of fixing the tablets, primarily welding or bonding, also have several drawbacks. Welding requires specialized equipment and operators, and the high temperatures generated during welding can adversely affect the material properties of the electrode frame and the tablets, leading to a decline in localized material performance. Furthermore, quality inspection is required after welding to ensure the strength and sealing of the welded areas, undoubtedly increasing the difficulty and cost of quality control during production. While bonding is relatively simple to operate, the performance of the adhesive is affected by environmental factors such as temperature and humidity, potentially leading to decreased bond strength and detachment during long-term use, thus affecting the normal operation of the electrolytic cell. In addition, both welding and bonding require additional parts and materials, increasing the number of components and making the assembly process of the electrolytic cell more cumbersome, reducing assembly efficiency and hindering large-scale industrial production. Utility Model Content

[0006] The purpose of this invention is to provide an electrode frame assembly and an electrolytic cell, which reduces the processing steps of the frame body, eliminates the need for additional pressing plates, and improves the assembly efficiency of the electrolytic cell.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] Polar frame components, including:

[0009] The pole frame body is provided with flow channel holes;

[0010] The flow guide includes a first segment and a second segment connected to each other. The first segment is embedded in the flow channel hole of the electrode frame. An electrolyte main channel is provided in the first segment, and an electrolyte sub-channel is provided in the second segment. The electrolyte sub-channel is connected to the electrolyte main channel.

[0011] As an optional solution for the electrode frame assembly, the inner wall surface of the electrolyte main channel is provided with multiple protrusions spaced apart in the circumferential direction, and the extension direction of the protrusions is the same as the extension direction of the electrolyte main channel.

[0012] As an optional solution for the polar frame assembly, the cross-sectional shape of the protrusion structure is circular, semi-circular, or polygonal.

[0013] As an optional solution for the electrode frame assembly, a partition is provided in the electrolyte distribution channel, which divides the inside of the electrolyte distribution channel into multiple flow guiding cavities.

[0014] As an optional solution for the electrode frame assembly, the connection between the separator and the inner wall of the electrolyte distribution channel is provided with a rounded corner.

[0015] As an optional solution for the electrode frame assembly, the electrolyte distribution channel is provided with a plurality of the aforementioned partitions, which divide the interior of the electrolyte distribution channel into a plurality of the aforementioned flow guiding cavities.

[0016] As an optional solution for the polar frame assembly, the first segment and the second segment of the flow guide are an integrated structure.

[0017] As an optional solution for the polar frame assembly, the guide element is made of engineering plastic or rubber.

[0018] As an optional solution for the pole frame assembly, the side wall of the pole frame body is provided with a planar groove, one side of the planar groove is in communication with the wall of the flow channel hole, and the second segment is embedded in the planar groove.

[0019] An electrolytic cell includes a sealing gasket and several electrode frame assemblies mentioned above. The electrode frame assemblies are stacked and pressed together. A sealing gasket is sandwiched between two adjacent electrode frame assemblies. The sealing gasket is provided with a through hole, and the main channel of the electrolyte in the flow guide is connected to the through hole.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] The electrode frame assembly provided by this utility model securely inserts the first segment of the flow guide into the flow channel hole of the electrode frame body. The first segment of the flow guide has a main electrolyte channel for primary electrolyte transport. The second segment of the flow guide has a secondary electrolyte channel, through which the electrolyte in the main channel can be distributed to the electrolysis chambers, meeting the electrolyte requirements of the electrolysis chambers during use. Simply installing the flow guide onto the electrode frame body and using the main and secondary electrolyte channels to transport the electrolyte not only improves the assembly efficiency of the electrolysis cell but also eliminates the need for additional machining on the electrode frame body, reducing the processing steps required for the frame body.

[0022] The electrolytic cell provided by this utility model has its flow guide component directly installed on the electrode frame body. The electrolyte is transported and guided by the flow guide component, eliminating the need for additional machining of the electrode frame body. Multiple electrode frame components are stacked and pressed together, and a sealing gasket is sandwiched between two electrode frame components to improve the sealing performance. Attached Figure Description

[0023] Figure 1 This is an assembly diagram of the pole frame assembly in an embodiment of this utility model;

[0024] Figure 2 This is an exploded view of the polar frame assembly in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the flow guide from a first-view perspective in an embodiment of this utility model;

[0026] Figure 4 This is a structural schematic diagram of the guide component from a second perspective in an embodiment of this utility model;

[0027] Figure 5 This is a structural schematic diagram of the guide component from a third perspective in an embodiment of this utility model;

[0028] Figure 6 This is a structural schematic diagram of the guide component from a fourth perspective in an embodiment of this utility model;

[0029] Figure 7 This is an assembly diagram of the pole frame assembly and the gasket in an embodiment of this utility model;

[0030] Figure 8 This is a schematic diagram of the gasket structure in an embodiment of this utility model.

[0031] In the picture:

[0032] 100. Pole frame assembly; 200. Sealing gasket; 201. Through hole;

[0033] 1. Polar frame body; 2. Airflow guide;

[0034] 11. Flow channel hole; 12. Planar groove; 13. Annular sealing groove;

[0035] 21. First segment; 211. Main electrolyte channel; 212. Raised structure; 22. Second segment; 221. Sub-channel of electrolyte; 222. Separator; 223. Rounded corner. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0040] To reduce the machining steps of the frame body, eliminate the need for additional pressing plates, and improve the assembly efficiency of the electrolytic cell, this embodiment provides an electrode frame assembly and an electrolytic cell, which are described below in conjunction with... Figures 1 to 8 The specific content of this embodiment will be described in detail.

[0041] like Figures 1 to 6As shown, the electrode frame assembly 100 in this embodiment includes two main parts: the electrode frame body 1 and the flow guide 2. The electrode frame body 1 serves as the basic support structure of the entire assembly. The electrode frame body 1 is provided with flow channel holes 11, which extend throughout the entire electrode frame body 1 along its thickness direction. This design allows the electrolyte to flow smoothly along the thickness direction of the electrode frame body 1, laying the foundation for subsequent electrolyte distribution. The size, shape, and position of the flow channel holes 11 can be designed according to actual usage requirements to ensure that the flow channel holes 11 can cooperate with the flow guide 2 to achieve efficient electrolyte transport. The flow guide 2 consists of a first segment 21 and a second segment 22 connected together. The first segment 21 has a specific shape and size corresponding to the flow channel holes 11. The first segment 21 can be firmly embedded in the flow channel holes 11 of the electrode frame, forming a tight connection between the first segment 21 and the flow channel holes 11, ensuring that no electrolyte leakage occurs during the operation of the electrolyzer. The first segment 21 contains a main electrolyte channel 211, which is the primary path for electrolyte transport. The inner wall of the main electrolyte channel 211 is relatively smooth to reduce resistance during electrolyte flow and improve transport efficiency. The second segment 22 contains electrolyte distribution channels 221, which intersect and connect with the main electrolyte channel 211, forming an ordered electrolyte distribution network. This intersecting design allows the electrolyte to be evenly distributed from the main electrolyte channel 211 into the electrolyte distribution channels 221, and then distributed to the electrolysis chambers, thus ensuring the uniformity and stability of the electrolysis reaction. Optionally, the electrolyte distribution channels 221 and the main electrolyte channel 211 may be perpendicularly intersecting and connecting.

[0042] The electrode frame assembly 100 provided by this utility model, firstly, in terms of assembly, only requires accurately installing the flow guide 2 onto the electrode frame body 1. The electrolyte flow and delivery task is completed through the main electrolyte channel 211 and the electrolyte distribution channel 221 inside the flow guide 2. This design greatly simplifies the assembly process of the electrolytic cell, reducing the number of parts and operating steps required during assembly. Compared with the traditional structure that requires multiple pressing parts to be fixed by welding or bonding to achieve electrolyte distribution, the electrode frame assembly 100 of this utility model greatly improves assembly efficiency, effectively shortens the production cycle, and reduces production costs.

[0043] Secondly, from a manufacturing process perspective, no additional machining is required on the electrode frame body 1. In traditional electrode frame designs, complex grooves are often machined on the electrode frame body 1 to achieve electrolyte distribution. This not only increases the number of machining steps and the difficulty of machining, but may also adversely affect the structural strength of the electrode frame body 1. However, the electrode frame assembly 100 of this invention, through the design of the flow guide 2, concentrates the electrolyte distribution function on the flow guide 2. The electrode frame body 1 only needs to provide basic support and flow channel holes 11, without the need for additional complex machining. This not only reduces the machining steps on the frame body and lowers the machining cost, but also ensures the structural integrity and strength of the electrode frame body 1, improving the reliability and service life of the electrolytic cell. Through the reasonable layout of the main electrolyte channel 211 and the electrolyte distribution channel 221, the electrolyte can be evenly and stably distributed to each electrolysis chamber, ensuring that the electrolysis reaction can proceed efficiently in each area. This helps to improve the overall electrolysis efficiency of the electrolytic cell, increase hydrogen production, and also improve the purity of hydrogen.

[0044] Furthermore, the inner wall of the electrolyte main channel 211 is circumferentially provided with multiple protruding structures 212, the extension direction of which is the same as that of the electrolyte main channel 211. During the operation of the electrolyzer, the electrolyte main channel 211 is subjected to various forces such as electrolyte pressure, flow impact force, and temperature changes. The presence of the protruding structures 212 increases the structural complexity of the inner wall, allowing stress to be distributed more evenly across the entire inner wall surface, rather than concentrated in certain local areas. This is similar to adding supporting beams in a building structure, significantly improving the overall strength of the flow guiding structure and effectively preventing deformation and cracking of the main channel due to stress concentration during long-term use. This ensures the long-term stable operation of the electrolyte main channel 211 and provides a reliable guarantee for the continuous operation of the electrolyzer. From the perspective of electrolyte flow characteristics, the protruding structures 212 have a significant effect on reducing the formation of liquid eddies during electrolyte flow. In traditional smooth inner wall main channels, electrolyte eddies are easily generated near the boundary layer during flow. These eddies disrupt the electrolyte flow, resulting in uneven electrolyte distribution within the main channel. Some areas experience excessively high flow rates, while others flow too slowly. This uneven flow not only affects the sufficient contact between the electrolyte and electrodes, reducing the efficiency of the electrolysis reaction, but also increases the energy consumption of the electrolytic cell. The presence of the protruding structures 212 alters the electrolyte flow path and velocity distribution. When the electrolyte flows past the protruding structures 212, they guide it to flow smoothly along their surfaces, disrupting the conditions for eddy formation and reducing eddy current generation. Simultaneously, the spacing between the protruding structures 212 also plays a role in rectifying the electrolyte flow, making it more stable and uniform within the main channel. This uniform flow helps the electrolyte circulate more effectively between the electrolysis chambers, ensuring each chamber receives a sufficient and uniform electrolyte supply, thereby improving the uniformity of electrolyte circulation.

[0045] Furthermore, the cross-sectional shape of the protruding structure can be circular, semi-circular, or polygonal. Different cross-sectional shapes of the protruding structure 212 offer unique technical advantages. A circular cross-section protruding structure 212 has a smooth surface without sharp edges, minimizing resistance to electrolyte flow. When the electrolyte flows through the circular protruding structure 212, the flow is more stable, without significant local turbulence, further reducing energy consumption. Simultaneously, the circular protruding structure 212 is relatively simple to manufacture and has low cost, making it suitable for large-scale production. A semi-circular cross-section protruding structure 212 combines the characteristics of a circle and a partially planar surface. It has a smooth surface, reducing flow resistance, and its planar portion allows for better connection with the inner wall of the electrolyte main channel 211, increasing structural stability. The semi-circular protruding structure 212 also effectively guides electrolyte flow, improving electrolyte distribution uniformity to some extent. Polygonal cross-section protruding structures 212, such as triangles and rectangles, have more complex geometric shapes. The protrusion structure 212 of this shape can more effectively disrupt the formation of eddies during electrolyte flow. The edges and corners of the polygonal protrusion structure 212 can generate a stronger disturbance effect on the electrolyte, making the electrolyte mix more thoroughly in the main channel and further improving the uniformity of electrolyte circulation.

[0046] Furthermore, a partition 222 is provided within the electrolyte distribution channel 221, dividing the interior of the channel into multiple flow-guiding cavities. From the perspective of electrolyte flow uniformity, the partition 222 plays a crucial role. In traditional single-channel designs, the electrolyte flow is easily affected by various factors, such as friction on the channel walls and local pressure changes, leading to uneven electrolyte distribution within the channel. Excessive electrolyte flow velocity in some areas may impact the localized electrolysis chambers, affecting the stability of the electrolysis reaction; while insufficient electrolyte supply may occur in other areas, resulting in incomplete electrolysis and reduced hydrogen production and quality. The presence of a partition 222 divides the electrolyte distribution channel 221 into two flow-guiding cavities, allowing for more rational guidance and distribution of the electrolyte during flow. Each flow-guiding cavity can independently transport the electrolyte, reducing mutual interference and turbulent flow within the channel. Just as a dam divides a wide river into two tributaries, allowing each tributary to flow more smoothly and evenly, this uniform flow ensures that the electrolyte flows to the electrolysis chamber at a relatively consistent velocity and flow rate. This provides a stable and sufficient supply of raw materials for the electrolysis reaction, thereby improving the overall electrolysis efficiency and the uniformity of hydrogen production in the electrolyzer. In terms of structural strength, the partition 222 significantly enhances the second section 22. During installation and operation, the second section 22 needs to withstand various forces, such as electrolyte pressure and mechanical stress during installation. If the structural strength of the second section 22 is insufficient, deformation and damage can easily occur, affecting the normal operation and service life of the electrolyzer. The partition 222 acts like a robust "skeleton" within the second section 22, increasing structural stability. It divides the interior of the second section 22 into two flow-guiding cavities, allowing stress to be distributed more evenly across the entire structure, rather than concentrated in certain localized areas. When subjected to external forces, the partition 222 can effectively disperse and transfer stress, reducing local stress concentration and thus improving the overall structural strength of the second section 22. This enhanced structural strength allows the second section 22 to better adapt to the installation requirements of the electrolytic cell, maintain structural integrity and stability during long-term operation, reduce downtime for maintenance due to structural damage, lower production costs, and improve production efficiency.

[0047] Furthermore, a rounded corner 223 is provided at the connection between the partition 222 and the inner wall of the electrolyte channel 221. From a structural mechanics perspective, in a traditional right-angle connection structure, when subjected to external forces, such as the pressure generated by the electrolyte flow or mechanical stress during installation, stress will concentrate sharply at the right angle. This stress concentration is like applying excessive weight to the right-angle support of a bridge, which can easily lead to local cracks or even breakage, seriously affecting the structural integrity and service life of the electrolyte channel 221. The design of the rounded corner 223 cleverly changes the stress distribution path, allowing the stress to be gradually dispersed and transmitted along a smooth curve, avoiding the formation of stress peaks at the connection. This is similar to using an arc design at the support of a bridge, which can evenly distribute the weight over a larger area, greatly enhancing the load-bearing capacity and stability of the structure. Therefore, the rounded corner 223 effectively reduces the stress concentration at the connection between the partition 222 and the inner wall of the electrolyte channel 221, reduces the risk of structural damage, and provides a reliable structural guarantee for the long-term stable operation of the electrolyzer. From a fluid dynamics perspective, the rounded corner 223 also has a positive impact on electrolyte flow. In right-angle connection structures, the electrolyte encounters sudden changes in direction and boundary when flowing through the right angle, leading to intense eddies and turbulence. These eddies and turbulence not only increase the resistance to electrolyte flow, slowing its velocity within the channels and affecting delivery efficiency, but also cause electrolyte accumulation and uneven distribution in local areas, thus affecting the electrolysis reaction within the electrolysis chamber. The smooth transition of the rounded corner 223 guides the electrolyte to change its flow direction smoothly, reducing obstruction and turbulence, ensuring smooth flow within the channels, improving delivery efficiency, and providing a stable and uniform electrolyte supply to the electrolysis chamber.

[0048] Furthermore, the electrolyte distribution channel 221 is provided with several partitions 222, which divide the interior of the electrolyte distribution channel 221 into several flow guiding cavities. These partitions 222 can be rationally arranged according to the actual needs of the electrolytic cell, dividing the electrolyte distribution channel 221 into multiple independent flow guiding cavities. Each flow guiding cavity can independently transport and distribute the electrolyte, acting like an independent "transport pipeline," enabling more precise delivery of the electrolyte to the electrolysis chamber. Simultaneously, the presence of multiple flow guiding cavities increases the contact area between the electrolyte and the partitions 222. During the electrolyte flow, the partitions 222 can guide and rectify the electrolyte. By increasing the contact area, the partitions 222 can more effectively adjust the flow state of the electrolyte, making the electrolyte distribution within the distribution channel more uniform. This is analogous to setting multiple diversion dams in a river, which better control the direction and speed of the water flow, making the water flow more smoothly and evenly. Uniform electrolyte distribution helps improve the consistency of electrolysis reactions in the electrolysis chambers, reducing the problem of localized reactions being too fast or too slow due to uneven electrolyte distribution, thereby improving the overall electrolysis efficiency and stability of the electrolyzer. Furthermore, the design of multiple partitions 222 and flow guide cavities offers flexibility and scalability. The number, position, and shape of the partitions 222, as well as the size and layout of the flow guide cavities, can be flexibly adjusted according to different electrolyzer specifications and electrolyte distribution requirements. This flexibility allows the design to adapt to various types of electrolyzers and meet the needs of different users. For example, in some large electrolyzers, the number of partitions 222 can be increased, dividing the channels into more flow guide cavities to improve electrolyte distribution accuracy and electrolyzer operating efficiency; while in some small electrolyzers, the number of partitions 222 can be appropriately reduced to simplify the structure and lower costs.

[0049] Furthermore, the first segment 21 and the second segment 22 of the flow guide 2 are an integrated structure. From a structural strength perspective, the integrated structure eliminates potential weak points at the segmented connections. If segmented connections are used, the connection points typically require bolts, welding, or other methods for fixation. These methods not only increase structural complexity but also make the connections prone to loosening or failure due to vibration, corrosion, and other factors during long-term use. The integrated structure, through a one-time molding process, seamlessly integrates the first segment 21 and the second segment 22 into a single unit, giving the flow guide 2 higher structural integrity and strength. During the operation of the electrolyzer, the flow guide 2 needs to withstand various forces such as electrolyte pressure, flow impact, and temperature changes. The integrated structure can better resist these external forces, reducing the risk of deformation and damage, and ensuring the long-term stable operation of the flow guide 2. The integrated structure also helps improve the flow state of the electrolyte. In a segmented flow guide 2, there may be tiny gaps or uneven surfaces at the connection points. These defects can cause eddies and turbulence in the electrolyte flow, increasing flow resistance and reducing electrolyte transport efficiency. The integrated flow guide 2 has a smooth surface and natural transition, guiding the electrolyte to flow smoothly and steadily, reducing the generation of eddies and turbulence. This smooth flow helps improve the uniformity of electrolyte distribution within the electrolytic cell, ensuring that each electrolysis chamber receives a sufficient and uniform supply of electrolyte, thereby improving the efficiency and consistency of the electrolysis reaction. Furthermore, the integrated structure simplifies the manufacturing and installation process of the flow guide 2. Since segmented connections are unnecessary, fewer connection steps and quality control processes are eliminated during manufacturing, reducing manufacturing costs and production cycle time. During installation, the integrated flow guide 2 can be installed as a single unit, reducing installation time and difficulty, and improving installation efficiency and accuracy.

[0050] Furthermore, the guide component 2 is made of engineering plastics or rubber. In electrolytic cells, the electrolyte is typically corrosive, especially those containing strong acids or alkalis, which can severely corrode traditional materials such as metals, affecting the service life and performance of the guide component 2. Engineering plastics and rubber, however, possess excellent corrosion resistance, enabling them to operate stably for extended periods in harsh electrolyte environments without easily corroding or being damaged. For example, engineering plastics such as polytetrafluoroethylene (PTFE) have extremely strong chemical stability, reacting almost entirely with no chemicals and effectively resisting electrolyte erosion. Rubber materials such as nitrile rubber and fluororubber also exhibit good acid and alkali resistance, meeting the requirements of different types of electrolytes. In addition to corrosion resistance, engineering plastics and rubber are lightweight. Compared to metals, engineering plastics and rubber have lower densities, reducing the overall weight of the guide component 2. In electrolytic cells, reducing component weight helps lower the overall load on the equipment, reduce energy consumption, and improve operating efficiency. Simultaneously, the lightweight guide component 2 is easier to install and transport, reducing operational difficulty and costs. In addition, engineering plastics and rubber possess a certain degree of elasticity and flexibility. This property allows the flow guide 2 to deform under external forces, thus providing cushioning and shock absorption. During the operation of the electrolytic cell, vibrations and impacts may occur. The flow guide 2, made of engineering plastics or rubber, can absorb and disperse this energy, reducing damage to the flow guide 2 itself and other components, and improving the reliability and stability of the equipment.

[0051] When the electrode frame body 1 is made of metal, without the flow guide 2, the electrolyte will directly contact the flow channel holes 11 and flow guide grooves on the electrode frame body 1. Metal is prone to electrochemical corrosion under the influence of the electrolyte, especially when current flows through it, which further accelerates the corrosion rate. Electrochemical corrosion can cause defects such as pits and cracks on the surface of the metal electrode frame body 1, reducing the strength and sealing performance of the electrode frame and seriously affecting the normal operation of the electrolytic cell. Simultaneously, corrosion products may enter the electrolyte, contaminating it and affecting the quality and efficiency of the electrolytic reaction. The presence of the flow guide 2 provides an effective isolation barrier for the metal electrode frame body 1. The flow guide 2 isolates the electrolyte from the flow channel holes 11 of the electrode frame body 1, preventing direct contact between the electrolyte and the metal, thus preventing electrochemical corrosion. The flow guide 2, made of engineering plastic or rubber, has good chemical stability and insulation properties, ensuring that the electrolyte flows within the flow guide 2 without corroding the electrode frame body 1. This not only protects the structural integrity and performance stability of the metal electrode frame body 1 and extends the service life of the electrode frame, but also reduces the equipment maintenance and replacement costs caused by electrode frame corrosion, thereby improving the economy and reliability of the electrolytic cell.

[0052] Furthermore, a planar groove 12 is provided on the side wall of the electrode frame body 1. One side of the planar groove 12 communicates with the wall of the flow channel hole 11, and the second segment 22 is embedded in the planar groove 12. During installation, the operator can easily align and embed the second segment 22 of the flow guide 2 into the planar groove 12 without complicated positioning and adjustment procedures, greatly improving installation efficiency and accuracy. At the same time, the planar groove 12 ensures a tight connection between the flow guide 2 and the electrode frame body 1. During the operation of the electrolyzer, even if subjected to the impact and vibration of the electrolyte, the flow guide 2 can remain firmly in place without loosening or displacement, ensuring the stability and reliability of the electrolyte flow system.

[0053] In traditional designs, the electrode frame body 1 typically uses machined flow channels to guide the electrolyte. However, this design has several drawbacks in the post-processing of the electrode frame, especially in the electroplating stage. The surface of the machined flow channels is usually quite rough, with many tiny tool marks and uneven areas. During electroplating, the electroplating solution is difficult to evenly cover all parts of the channels, resulting in uneven electroplating layer thickness. In some corners and depths of the channels, the electroplating solution cannot even fully reach, forming electroplating blind spots, leaving the metal surface in these areas unprotected. Over time, these poorly plated areas are susceptible to erosion by the electrolyte and other environmental factors, leading to corrosion and damage, which in turn affects the overall performance and service life of the electrode frame body. The optimized design with a planar groove structure 12 effectively solves this problem. The surface of the planar groove 12 is relatively smooth and flat, allowing the electroplating solution to adhere more evenly to the groove surface during electroplating, forming a uniform thickness and high-quality electroplating layer. This uniform electroplating layer provides comprehensive and effective protection for the electrode frame body 1, avoiding corrosion problems caused by poor electroplating, improving the corrosion resistance and reliability of the electrode frame, extending its service life, and reducing equipment maintenance costs. By creating mounting slots for the flow guide 2 on the electrode frame body 1, the original machined flow guide groove design is eliminated, and an optimized planar groove 12 structure is designed. This planar groove 12 structure effectively avoids poor electroplating problems that may occur during post-processing of the electrode frame; it also effectively reduces the impact of the electrolyte on the flow guide grooves on the metal electrode frame body 1 during the electrolytic cell reaction process.

[0054] like Figure 2 , Figure 7 Combination Figure 8As shown, this embodiment also provides an electrolytic cell, which includes a sealing gasket 200 and several electrode frame assemblies 100 mentioned above. The electrode frame assemblies 100 are stacked and pressed together, with a sealing gasket 200 sandwiched between two adjacent electrode frame assemblies 100. The sealing gasket 200 is provided with a through hole 201, and the main electrolyte channel 211 of the guide member 2 communicates with the through hole 201. In actual use, a diaphragm is installed in the hollow area in the middle of the electrode frame body 1 (used to separate the anode and cathode areas, prevent product mixing or short circuit, and allow ions to pass through). The space around the diaphragm where the electrochemical reaction takes place is called the electrolytic chamber. This is prior art and will not be described in detail here. Because the sealing gasket 200 has through holes 201, after multiple electrode frame assemblies 100 are stacked and pressed together, the electrolyte main channels 211 of two adjacent corresponding flow guides 2 are connected by the through holes 201, ensuring that the two are interconnected. That is, the electrolyte main channels 211 of the corresponding flow guides 2 on all electrode frame assemblies 100 can be interconnected, ensuring smooth flow of electrolyte. The electrolyte flowing into the electrolyte main channel 211 enters the electrolysis chamber through the electrolyte sub-channels 221 on the flow guide 2 and participates in the electrochemical reaction.

[0055] Furthermore, the side wall of the pole frame body 1 is provided with multiple annular sealing grooves 13, which contact the sealing gasket 200, increasing the friction and contact area between the pole frame body 1 and the sealing gasket 200, thereby further improving the sealing performance.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A polar frame assembly, characterized in that, include: The pole frame body (1) is provided with flow channel holes (11); The flow guide (2) includes a first segment (21) and a second segment (22) connected to each other. The first segment (21) is embedded in the flow channel hole (11) of the electrode frame. An electrolyte main channel (211) is provided in the first segment (21), and an electrolyte sub-channel (221) is provided in the second segment (22). The electrolyte sub-channel (221) is connected to the electrolyte main channel (211).

2. The polar frame assembly according to claim 1, characterized in that, The inner wall surface of the electrolyte main channel (211) is provided with a plurality of protrusions (212) spaced apart in the circumferential direction, and the extension direction of the protrusions (212) is the same as the extension direction of the electrolyte main channel (211).

3. The pole frame assembly according to claim 2, characterized in that, The cross-sectional shape of the protrusion structure (212) is circular, semi-circular, or polygonal.

4. The polar frame assembly according to claim 1, characterized in that, The electrolyte distribution channel (221) is provided with a partition (222), which divides the inside of the electrolyte distribution channel (221) into multiple flow guiding cavities.

5. The pole frame assembly according to claim 4, characterized in that, A rounded corner (223) is provided at the connection between the partition (222) and the inner wall of the electrolyte channel (221).

6. The polar frame assembly according to claim 4, characterized in that, The electrolyte distribution channel (221) is provided with a plurality of partitions (222), which divide the interior of the electrolyte distribution channel (221) into a plurality of flow guiding cavities.

7. The pole frame assembly according to claim 1, characterized in that, The first segment (21) and the second segment (22) of the flow guide (2) are an integrated structure.

8. The pole frame assembly according to claim 7, characterized in that, The guide component (2) is made of engineering plastic or rubber.

9. The polar frame assembly according to any one of claims 1-8, characterized in that, The side wall of the pole frame body (1) is provided with a planar groove (12), one side of the planar groove (12) is in communication with the hole wall of the flow channel hole (11), and the second segment (22) is embedded in the planar groove (12).

10. An electrolytic cell, characterized in that, It includes a sealing gasket (200) and a plurality of electrode frame assemblies as described in any one of claims 1-9, wherein the plurality of electrode frame assemblies are stacked and pressed together, and the sealing gasket (200) is sandwiched between two adjacent electrode frame assemblies. The sealing gasket (200) is provided with a through hole (201), and the electrolyte main channel (211) of the flow guide (2) is connected to the through hole (201).

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