A stacked electrolytic cell

Abstract

The application discloses a stacked electrolytic cell, comprising: an inner shell, comprising two shell end cover plates and a plurality of shell middle frames, the shell middle frames being stacked between the two shell end cover plates to form an installation cavity; an electrolytic unit corresponding to the number of the shell middle frames is stacked in the installation cavity; each electrolytic unit comprises an ion exchange module, a first electrode plate and a second electrode plate, a first electrolysis chamber is formed in the ion exchange module, and the first electrode plate is arranged in the first electrolysis chamber; a second electrolysis chamber is formed between the ion exchange module and the shell end cover plate and between any two adjacent ion exchange modules, and the second electrode plate is arranged in the second electrolysis chamber; wherein each shell middle frame is provided with a water inlet channel, a first water outlet channel and a second water outlet channel, which are communicated with the first electrolysis chamber and the second electrolysis chamber, respectively. Through the module design of embedding one electrolytic unit in one shell middle frame and the assembly mode of axially stacking multiple modules, the defects of the traditional electrolytic cell with fixed specifications are avoided.

Description

Technical Field

[0001] This application relates to the technical field of water purifiers, and more particularly to a stacked electrolytic cell. Background Technology

[0002] In the field of water electrolysis technology, the electrolyzer is a core piece of equipment, and its structural design directly affects the efficiency, product specifications, and production and application costs of alkaline and acidic water production. Currently, water electrolyzers used to produce alkaline and acidic water on the market generally adopt a fixed structural design pattern. That is, each type of electrolyzer (including models corresponding to different water production volumes, different acid and alkali concentrations, and different application scenarios) requires an independent complete design and development process. From the initial structural design, mechanical performance and electrolysis performance simulation verification, to the development and manufacturing of special molds, to the customized processing of various components, the formulation of assembly processes, and subsequent performance testing and optimization, all of these must be carried out separately for a single specification. This fixed design pattern leads to significant limitations in the production and manufacturing of electrolytic cells. On the one hand, the separate design and development of different specifications of products requires a large investment of manpower, material resources, and time. In particular, the development cost of special molds is high, and the molds have extremely poor versatility. Once the product specifications are adjusted, they are difficult to reuse, which greatly increases the overall production cost. On the other hand, the component dimensions, structural parameters, and assembly precision requirements of different specifications of electrolytic cells are different. It is necessary to build corresponding processing production lines and formulate exclusive processing technology standards, which not only increases the complexity of production organization but also leads to low production efficiency. At the same time, the procurement of components, inventory management, and subsequent maintenance and replacement also need to be handled separately for different specifications, further increasing the difficulty of production and operation and maintenance. In addition, the fixed structural design makes it difficult for electrolytic cells to be flexibly adjusted according to the needs of actual application scenarios, and it is impossible to achieve rapid switching and adaptation between different specifications of products, which limits its application flexibility in diversified market demands. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide a stacked electrolytic cell that can solve the above-mentioned problems existing in the related art.

[0004] To achieve the above objectives, this application adopts the following technical solution: A stacked electrolytic cell, comprising: The inner shell includes two shell end caps and several shell middle frames, which are stacked between the two shell end caps to form an installation cavity; Electrolysis units are stacked in the mounting cavity in a one-to-one correspondence with the number of frames in the shell; each electrolysis unit includes an ion exchange module, a first electrode plate and a second electrode plate, the ion exchange module has a first electrolysis chamber inside, and the first electrode plate is disposed in the first electrolysis chamber; a second electrolysis chamber is formed between the ion exchange module and the shell end cover plate, and between any two adjacent ion exchange modules, and the second electrode plate is disposed in the second electrolysis chamber; Each of the shell frames is provided with a water inlet channel, a first water outlet channel and a second water outlet channel. The water inlet channel connects the first electrolysis chamber and the second electrolysis chamber, the first water outlet channel connects the first electrolysis chamber and the second water outlet channel connects the second electrolysis chamber.

[0005] Optionally, the ion exchange module includes a module frame and two ion exchange membranes. The ion exchange membranes are sealed around the module frame and form the first electrolysis chamber between the two ion exchange membranes.

[0006] Optionally, the module frame is provided with an inlet and an outlet that connect to the first electrolysis chamber, the inlet being connected to the inlet channel and the outlet being connected to the first outlet channel.

[0007] Optionally, it also includes sealing rings that correspond one-to-one with the shell frame. The sealing rings are disposed around the ion exchange module between the ion exchange module and the shell frame. In the stacked state, any two adjacent sealing rings are sealed together, and the sealing rings on the end side are sealed together with the shell end cover plate. The sealing ring is provided with a water inlet hole, a first water outlet hole and a second water outlet hole. The water inlet channel is connected to the first electrolysis chamber and the second electrolysis chamber through the water inlet hole. The first water outlet channel is connected to the first electrolysis chamber through the first water outlet hole. The second water outlet channel is connected to the second electrolysis chamber through the second water outlet hole.

[0008] Optionally, the first electrode plate is connected to a first terminal, and the second electrode plate is connected to a second terminal; Along the extension path of the first terminal, the sealing ring is provided with a corresponding inner through hole of the first terminal, and the housing frame is provided with a corresponding outer through hole of the first terminal. The first terminal extends outward through the inner through hole and the outer through hole of the first terminal. Along the extension path of the second terminal, the two opposite sides of the sealing ring are respectively provided with a first groove, and the shell frame is provided with a corresponding second groove; the shell end cover is provided with a sealing block at the position of the first groove of the sealing ring, and the sealing block is also provided with a corresponding first groove, and any two adjacent first grooves form a second terminal inner through hole; the shell end cover is also provided with a second groove at the position of the second groove of the shell frame, and any two adjacent second grooves form a second terminal outer through hole, and the second terminal extends outward through the second terminal inner through hole and the second terminal outer through hole.

[0009] Optionally, the water inlet channel, the first water outlet channel, and the second water outlet channel provided on the shell frame are respectively configured to include a first channel segment and a second channel segment that are vertically connected. The first channel segment extends along the stacking direction of the shell frame, so that the corresponding first channel segments on multiple shell frames are connected after stacking. The end of the second channel segment away from the first channel segment is connected to the corresponding first electrolysis chamber and / or second electrolysis chamber.

[0010] Optionally, one of the shell end cover plates is provided with a water inlet connector, a first water outlet connector and a second water outlet connector, wherein the water inlet connector is connected to the first channel section of the water inlet channel, the first water outlet connector is connected to the first channel section of the first water outlet channel, and the second water outlet connector is connected to the first channel section of the second water outlet channel.

[0011] Optionally, one of the shell end caps is provided with a nut, and the other shell end cap and each of the shell middle frames are provided with connecting holes. Bolts pass through each of the connecting holes and are connected to the nut to achieve stacking and fixing.

[0012] Optionally, the system also includes an outer shell, which includes a first shell sleeve and a second shell sleeve. The first shell sleeve includes a first shell panel and a first shell enclosure wall connected together. The second shell sleeve includes a second shell panel and a second shell enclosure wall connected together. The first shell sleeve and the second shell sleeve are respectively fitted onto the corresponding sides of the two shell end covers of the inner shell. The first shell enclosure wall is fitted over the second shell enclosure wall. The first shell enclosure wall and the second shell enclosure wall can be slidably adjusted relative to each other according to the stacking height of the inner shells.

[0013] Optionally, the first housing is fixed to one of the end caps by a first screw, and the second housing is fixed to the other end cap by a second screw.

[0014] The beneficial effects of this application are as follows: The stacked electrolytic cell solution provided by this utility model, through the standardized basic module design of one shell-in-frame nesting one electrolysis unit, and the assembly method of axial stacking of multiple modules, fundamentally solves the core defects of traditional fixed-specification electrolytic cells: In terms of technical adaptability, there is no need to change the structure of core components; the water production can be flexibly adjusted and adapted to different acid and alkali concentration requirements simply by increasing or decreasing the number of basic modules. This allows one module to cover multiple specification scenarios, and the standardized module size ensures that different batches of components are interchangeable and universal. During later maintenance, faulty modules can be disassembled and replaced individually without replacing the entire electrolytic cell, significantly reducing downtime costs and operational difficulties. In terms of cost control, the core components (shell end cover plate, shell-in-frame, electrolysis unit) are all cost-effective. Standardized mass production avoids the high investment required for designing and opening molds for different specifications under the traditional model. The mold reuse rate reaches 100%, and inventory management only requires stocking three types of standardized components, eliminating the need to stockpile finished products of multiple specifications, significantly reducing inventory capital occupation. Large-scale production can further improve efficiency and reduce procurement costs. In terms of application scenarios, it can be quickly adapted to everything from small household water purification equipment (2-3 modules) to large commercial drinking water equipment (3-6 modules). When users' needs change in the future, they only need to add the corresponding modules to upgrade, without replacing the entire set of equipment. Moreover, the independent inlet and outlet water channels and the synergistic effect of the ion exchange module can effectively prevent the mixing of product water and ensure the concentration and purity of acidic and alkaline water, comprehensively improving the product's market competitiveness and user experience. Attached Figure Description

[0015] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the stacked electrolytic cell described in the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the stacked electrolytic cell described in the embodiment of this application under an explosion state; Figure 3 This is a schematic diagram of the main body of the stacked electrolytic cell described in the embodiments of this application; Figure 4 for Figure 3 Front view of the structure shown; Figure 5 for Figure 4 Sectional view of section AA; Figure 6 for Figure 4 Sectional view of section BB; Figure 7 for Figure 3 An exploded view of the structure shown. Figure 8 for Figure 7 A schematic diagram of the structure shown from another perspective; Figure 9 This is a schematic diagram of the main body of the stacked electrolytic cell described in this application embodiment after the shell end cover is hidden. Figure 10 for Figure 9 An exploded view of the structure shown. Figure 11 This is a cross-sectional schematic diagram of the shell frame described in the embodiment of this application; Figure 12 This is a schematic diagram of the structure of the electrolysis unit and the sealing ring as described in the embodiment of this application; Figure 13 for Figure 12 A schematic diagram of the structure shown from another perspective; Figure 14 for Figure 12 An exploded view of the structure shown. Figure 15 This is a schematic diagram of the ion exchange module described in an embodiment of this application; Figure 16 for Figure 15 A cross-sectional schematic diagram of the structure shown.

[0017] In the picture: 1. Inner shell; 11. Shell end cover; 111. Water inlet connector; 112. First water outlet connector; 113. Second water outlet connector; 12. Shell middle frame; 121. Water inlet channel; 122. First water outlet channel; 123. Second water outlet channel; 124. First terminal external through hole; 125. Second groove; 1201. First channel section; 1202. Second channel section; 2. Electrolysis unit; 21. Ion exchange module; 211. Module frame; 2111. Water inlet; 2112. Water outlet; 212. Ion exchange... 1. Replace diaphragm; 22. First electrode plate; 221. First terminal block; 23. Second electrode plate; 231. Second terminal block; 3. Sealing ring; 31. Water inlet hole; 32. First water outlet hole; 33. Second water outlet hole; 34. Sealing block; 41. Bolt; 42. Nut; 5. Outer shell; 51. First shell sleeve; 511. First shell panel; 512. First shell enclosure; 513. First screw; 52. Second shell sleeve; 521. Second shell panel; 522. Second shell enclosure; 523. Second screw. Detailed Implementation

[0018] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, unless otherwise expressly 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.

[0020] In this application, unless otherwise expressly 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 being 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 being 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.

[0021] In the field of water electrolysis technology, the electrolyzer is a core piece of equipment, and its structural design directly affects the efficiency, product specifications, and production and application costs of alkaline and acidic water production. Currently, water electrolyzers used to produce alkaline and acidic water on the market generally adopt a fixed structural design pattern. That is, each type of electrolyzer (including models corresponding to different water production volumes, different acid and alkali concentrations, and different application scenarios) requires an independent complete design and development process. From the initial structural design, mechanical performance and electrolysis performance simulation verification, to the development and manufacturing of special molds, to the customized processing of various components, the formulation of assembly processes, and subsequent performance testing and optimization, all of these must be carried out separately for a single specification. This fixed design pattern leads to significant limitations in the production and manufacturing of electrolytic cells. On the one hand, the separate design and development of different specifications of products requires a large investment of manpower, material resources, and time. In particular, the development cost of special molds is high, and the molds have extremely poor versatility. Once the product specifications are adjusted, they are difficult to reuse, which greatly increases the overall production cost. On the other hand, the component dimensions, structural parameters, and assembly precision requirements of different specifications of electrolytic cells are different. It is necessary to build corresponding processing production lines and formulate exclusive processing technology standards, which not only increases the complexity of production organization but also leads to low production efficiency. At the same time, the procurement of components, inventory management, and subsequent maintenance and replacement also need to be handled separately for different specifications, further increasing the difficulty of production and operation and maintenance. In addition, the fixed structural design makes it difficult for electrolytic cells to be flexibly adjusted according to the needs of actual application scenarios, and it is impossible to achieve rapid switching and adaptation between different specifications of products, which limits its application flexibility in diversified market demands.

[0022] To overcome the above technical problems, refer to Figures 1-8 This application provides a stacked electrolytic cell, comprising: The inner shell 1 includes two shell end cover plates 11 and a plurality of shell middle frames 12, wherein the shell middle frames 12 are stacked between the two shell end cover plates 11 to form an installation cavity; Electrolysis units 2 are stacked in the mounting cavity in a one-to-one correspondence with the number of shell frames 12; each electrolysis unit 2 includes an ion exchange module 21, a first electrode plate 22, and a second electrode plate 23. The ion exchange module 21 has a first electrolysis chamber inside, and the first electrode plate 22 is disposed in the first electrolysis chamber; a second electrolysis chamber is formed between the ion exchange module 21 and the shell end cover plate 11, and between any two adjacent ion exchange modules 21, and the second electrode plate 23 is disposed in the second electrolysis chamber; Each of the shell frames 12 is provided with a water inlet channel 121, a first water outlet channel 122 and a second water outlet channel 123. The water inlet channel 121 connects the first electrolysis chamber and the second electrolysis chamber, the first water outlet channel 122 connects the first electrolysis chamber, and the second water outlet channel 123 connects the second electrolysis chamber.

[0023] The inner shell 1 includes two shell end cover plates 11 (upper and lower / left and right end limiting parts) and several shell middle frames 12 (middle bearing and flow guiding units). The number of shell middle frames 12 corresponds strictly one-to-one with the number of electrolysis units 2. Each shell middle frame 12 has an independent inner cavity to accommodate a complete electrolysis unit 2, forming a basic module unit of a shell middle frame 12 fitted with an electrolysis unit 2.

[0024] Each inner frame 12 is designed with an inlet channel 121, a first outlet channel 122, and a second outlet channel 123. The channel positions and aperture specifications are uniform and standardized, and the channel ports are all connected to the inner cavity to ensure precise connection with the flow channels of the electrolysis unit 2. One end of the inlet channel 121 is connected to the external water supply system, and the other end leads to the inner cavity of the inner frame 12, synchronously supplying raw water to the first and second electrolysis chambers of the electrolysis unit 2 inside the cavity to ensure the uniformity of water supply to each unit. One end of the first outlet channel 122 is connected to the outlet of the first electrolysis chamber in the inner cavity of the inner frame 12, and the other end is connected to the external water collection pipe to exclusively discharge acidic water (or alkaline water) and avoid mixing. One end of the second outlet channel 123 is connected to the outlet of the second electrolysis chamber in the inner cavity of the inner frame 12, and the other end is connected to the external water collection pipe to exclusively discharge alkaline water (or acidic water), running parallel and independent to the first outlet channel 122.

[0025] During assembly, a single electrolysis unit 2 is first embedded into the inner cavity of the corresponding shell frame 12 (to achieve pre-assembly of the electrolysis unit 2 and the shell frame 12, forming a basic module). Then, multiple "shell frame 12-electrolysis unit 2" basic modules are stacked sequentially along the axial direction. Finally, they are sealed and fixed from both ends by two shell end cover plates 11 (which can be connected by detachable means such as bolts 41 and buckles). This ensures that the water inlet channel 121 and water outlet channel of all basic modules are aligned and connected, forming a sealed and unified installation cavity and fluid channel, ensuring that there is no leakage and no blockage in the flow channel during the electrolysis process.

[0026] In electrolysis unit 2, when the first electrode plate 22 acts as the anode, acidic water is generated in the first electrolysis chamber; when the second electrode plate 23 acts as the cathode, alkaline water is generated in the second electrolysis chamber. When the first electrode plate 22 acts as the cathode, alkaline water is generated in the first electrolysis chamber; when the second electrode plate 23 acts as the anode, acidic water is generated in the second electrolysis chamber. During use, the polarity of the first electrode plate 22 and the second electrode plate 23 can be changed by switching the polarity of the connected electrodes.

[0027] Each electrolysis unit 2 is an independent reaction core, adapted and embedded in the inner cavity of a shell-and-frame 12. It consists of an ion exchange module 21, a first electrode plate 22, and a second electrode plate 23. The ion exchange module 21 is hollow, forming a first electrolysis chamber. The first electrode plate 22 (e.g., the anode) is fixed in this chamber and is responsible for a specific electrolysis reaction (e.g., producing acidic water). The second electrolysis chamber is formed by the ion exchange module 21 and the inner wall of the inner cavity of the shell-and-frame 12, or by the ion exchange module 21 and the outer wall of the electrolysis unit 2 of the adjacent basic module (because after the basic modules are stacked, the inner cavities of adjacent shell-and-frame 12 are connected by a sealing structure, and the gap between the outer wall of the electrolysis unit 2 and the inner wall of the shell-and-frame 12 forms a continuous second electrolysis chamber). The second electrode plate 23 (e.g., the cathode) is set in this chamber and is responsible for another type of electrolysis reaction (e.g., producing alkaline water). The ion exchange module 21 allows cations to pass through while blocking anions. This selective migration process ensures that the two types of water are effectively separated and do not mix, making one side increasingly alkaline and the other side increasingly acidic.

[0028] In this embodiment, when the stacked electrolyzer is in operation, raw water is introduced into the water inlet channel 121 of the first shell frame 12 through an external water supply system. Since all electrolysis units 2 are stacked, the water inlet channels 121 are aligned and connected to form an overall water supply network, and the raw water can flow synchronously into the inner cavity of each shell frame 12. The raw water entering the inner cavity of a single shell frame 12 flows synchronously into the first electrolysis chamber and the second electrolysis chamber of that unit through the preset water inlet interface of the electrolysis unit 2, realizing parallel and independent water supply for multiple units. After the electrolysis reaction is completed, the product water (such as acidic water) of the first electrolysis chamber flows into the first water outlet channel 122 of the corresponding shell frame 12 through the first outlet of the electrolysis unit 2; the product water (such as alkaline water) of the second electrolysis chamber flows into the second water outlet channel 123 of the corresponding shell frame 12 through the second outlet of the electrolysis unit 2. The first water outlet channels 122 of all shell frames 12 are aligned and connected to form a total product water channel, and the second water outlet channel 123 is similar, ultimately exporting two types of target water respectively, forming completely independent output paths.

[0029] The stacked electrolytic cell solution provided in this application fundamentally solves the core defects of traditional fixed-specification electrolytic cells by using a standardized basic module design of one shell-in-frame 12 nested within one electrolysis unit 2, and an assembly method of axially stacking multiple modules. In terms of technical adaptability, there is no need to change the structure of core components; the water production rate can be flexibly adjusted and adapted to different acid and alkali concentration requirements simply by increasing or decreasing the number of basic modules. This allows one module to cover multiple specification scenarios, and the standardized module size ensures interchangeability between different batches of components. During later maintenance, faulty modules can be disassembled and replaced individually without replacing the entire electrolytic cell, significantly reducing downtime costs and operational difficulty. In terms of cost control, the core components (shell end cover 11, shell-in-frame 12, and electrolysis unit 2) all achieve standardized... Standardized mass production avoids the high investment required for designing and opening molds for different specifications in the traditional model. The mold reuse rate reaches 100%, and inventory management only requires stocking three types of standardized components, eliminating the need to stockpile finished products of multiple specifications, significantly reducing inventory capital occupation. Large-scale production can further improve efficiency and reduce procurement costs. In terms of application scenarios, it can be quickly adapted to everything from small household water purification equipment (2-3 modules) to large commercial drinking water equipment (3-6 modules). When users' needs change in the future, they only need to add the corresponding modules to upgrade, without replacing the entire set of equipment. Moreover, the independent inlet and outlet water channels and the synergistic effect of the ion exchange module 21 can effectively prevent the mixing of product water and ensure the concentration and purity of acidic and alkaline water, comprehensively improving the product's market competitiveness and user experience.

[0030] In one embodiment, reference is made to Figure 15 and Figure 16 The ion exchange module 21 includes a module frame 211 and two ion exchange membranes 212. The ion exchange membranes 212 are respectively sealed and connected to the module frame 211 around their perimeter, forming the first electrolysis chamber between the two ion exchange membranes 212.

[0031] The module frame 211 serves as the supporting skeleton for the ion exchange module 21. It is made of rigid materials (such as acid and alkali resistant plastics, engineering resins, etc.) and has a rectangular or circular frame structure. The outer perimeter of the frame matches the inner cavity of the shell frame 12 to ensure stable fixation after embedding. The inner edge of the frame is provided with sealing grooves or sealing protrusions for tight connection with the ion exchange membrane 212. At the same time, the frame has openings corresponding to the water inlet channel 121 and the first water outlet channel 122 of the shell frame 12 to ensure that the raw water can smoothly enter the first electrolysis chamber and the product water can be smoothly discharged.

[0032] The ion exchange membrane 212 is made of a membrane material with selective ion conduction properties (such as cation exchange membranes or anion exchange membranes, adapted according to electrolysis requirements). Two membranes cover the two side openings of the module frame 211 respectively. The membranes are fixed to the sealing structure of the module frame 211 by welding, bonding, or pressing, forming a closed first electrolysis chamber (with openings for connecting the inlet channel 121 and the first outlet channel 122). The area of ​​the membrane is the same as the area of ​​the inner opening of the module frame 211 to ensure complete coverage of the frame opening. At the same time, the thickness and material properties of the membrane must meet the requirements of ion conduction efficiency and structural strength to avoid damage due to pressure or electric field during electrolysis. The first electrode plate 22 is fixed in the first electrolysis chamber, and its position is maintained at a certain distance from the membrane to ensure that the electrode can fully contact the raw water in the first electrolysis chamber and ensure the efficiency of the electrolysis reaction.

[0033] In this embodiment, the first electrolysis chamber, formed by two ion exchange membranes 212 and the module frame 211, serves as the dedicated reaction space for the first electrode plate 22. The area between the outer side of the module frame 211 and the inner cavity of the shell frame 12, as well as the outer side of adjacent module frames 211, forms the second electrolysis chamber. Through the physical separation of the membranes, the first and second electrolysis chambers are independently partitioned, preventing direct mixing of water from the two electrolysis environments. At the same time, the first electrode plate 22 is fixed in the first electrolysis chamber, and its position maintains a certain distance from the membranes, ensuring that the electrode can fully contact the raw water in the first electrolysis chamber and guaranteeing the efficiency of the electrolysis reaction.

[0034] In one embodiment, reference is made to Figure 5 and Figure 6 The module frame 211 is provided with an inlet 2111 and an outlet 2112 that connect to the first electrolysis chamber. The inlet 2111 is connected to the inlet channel 121, and the outlet 2112 is connected to the first outlet channel 122.

[0035] Preferably, the inlet 2111 is located in the bottom area of ​​the module frame 211, and the outlet 2112 is located in the top area of ​​the module frame 211. Through the directional guidance of the inlet 2111 and the flow channel, the flow of raw water in the first electrolysis chamber is more stable and uniform, the contact area between the electrode and the water is larger and the contact time is longer, which can effectively improve the electrolysis reaction rate.

[0036] In one embodiment, a sealing ring 3 is also provided corresponding to the shell frame 12. The sealing ring 3 is disposed around the ion exchange module 21 between the ion exchange module 21 and the shell frame 12. In the stacked state, any two adjacent sealing rings 3 are sealed together, and the sealing ring 3 on the end side is sealed together with the shell end cover plate 11. The sealing ring 3 is provided with a water inlet hole 31, a first water outlet hole 32 and a second water outlet hole 33. The water inlet channel 121 is connected to the first electrolysis chamber and the second electrolysis chamber through the water inlet hole 31. The first water outlet channel 122 is connected to the first electrolysis chamber through the first water outlet hole 32. The second water outlet channel 123 is connected to the second electrolysis chamber through the second water outlet hole 33.

[0037] The sealing ring 3 is made of elastic material (such as acid and alkali resistant nitrile rubber, fluororubber, etc.) and has an overall ring structure that fits the inner cavity of the shell frame 12. The inner contour of the ring matches the outer circumferential size of the ion exchange module 21 to ensure that it can tightly wrap the outer circumference of the ion exchange module 21. At the same time, the sealing ring 3 has a water inlet hole 31, a first water outlet hole 32, and a second water outlet hole 33. The positions and diameters of the three types of holes are completely aligned with the water inlet channel 121, the first water outlet channel 122, and the second water outlet channel 123 of the shell frame 12, respectively. The inner edge of the hole is connected to the water inlet 2111 and the water outlet 2112 of the ion exchange module 21 (or the flow channel interface of the second electrolysis chamber), forming a complete flow channel path of "shell frame 12 channel - sealing ring 3 hole - electrolysis chamber".

[0038] The sealing ring 3 is sleeved on the outer periphery of the ion exchange module 21 and clamped between the ion exchange module 21 and the inner cavity wall of the shell frame 12, thereby sealing the radial gap between the ion exchange module 21 and the shell frame 12. When multiple basic modules of "shell frame 12-electrolysis unit 2-sealing ring 3" are stacked, the end faces of the sealing rings 3 of two adjacent modules are tightly fitted together, and an axial seal is formed by the compression deformation of the elastic material, preventing fluid leakage between modules. The sealing rings 3 located at both ends of the stacked structure are respectively fitted and sealed to the inner side wall of the shell end cover plate 11, so that the entire stacked system forms a full-dimensional sealing space of "radial + axial", ensuring that the fluid is only transported along the preset flow channel during the electrolysis process.

[0039] In this embodiment, the sealing ring 3, which corresponds one-to-one with the inner frame 12 of the shell, effectively enhances the leakage prevention and pressure resistance of the entire electrolytic cell through "radial + axial" full-dimensional sealing and precise flow channel connection.

[0040] In one embodiment, reference is made to Figures 7-10 The first electrode plate 22 is connected to a first terminal 221, and the second electrode plate 23 is connected to a second terminal 231; Along the extension path of the first terminal 221, the sealing ring 3 is provided with a corresponding inner through hole of the first terminal, and the housing frame 12 is provided with a corresponding outer through hole 124 of the first terminal. The first terminal 221 extends outward through the inner through hole and the outer through hole 124 of the first terminal. Along the extension path of the second terminal 231, the two opposite sides of the sealing ring 3 are respectively provided with a first groove, and the shell frame 12 is provided with a corresponding second groove 125; the shell end cover plate 11 is provided with a sealing block 34 at the position of the first groove of the sealing ring 3, and the sealing block 34 is also provided with the first groove. Any two adjacent first grooves form a second terminal inner through hole; the shell end cover plate 11 is also provided with a second groove 125 at the position of the second groove 125 of the shell frame 12. Any two adjacent second grooves 125 form a second terminal outer through hole, and the second terminal 231 extends outward through the second terminal inner through hole and the second terminal outer through hole.

[0041] The first terminal 221 connected to the first electrode plate 22 (such as the anode) needs to extend outward from the inside of the electrolysis unit 2 to connect to the external circuit. Its extension path needs to pass through the sealing ring 3 and the inner frame 12 in sequence. Specifically, the sealing ring 3 has an inner through hole for the first terminal at the corresponding position. The diameter of the through hole is precisely matched with the outer diameter of the first terminal 221, and the inner wall of the through hole is provided with an elastic sealing layer (such as a rubber protrusion). When the first terminal 221 passes through, the sealing layer tightly wraps the outer periphery of the terminal, achieving radial sealing. The inner frame 12 has an outer through hole 124 for the first terminal at the corresponding position. The diameter of the through hole is slightly larger than the inner through hole of the first terminal, and a small gap is reserved between the hole wall and the first terminal 221. The gap can be filled with sealant or an O-ring can be set to further strengthen the seal between the first terminal 221 and the inner frame 12, and prevent fluid from leaking from the through hole.

[0042] The second terminal 231 connected to the second electrode plate 23 (such as the cathode) adopts a splicing through-hole design to adapt to the multi-module stacking structure. This involves the coordination of the sealing ring 3, the shell frame 12, and the shell end cover 11. Specifically, the two opposite sides of the sealing ring 3 have a first groove. The first groove is semi-circular (or U-shaped), and its depth and width match the size of the second terminal 231. When two "shell frame 12-electrolysis unit 2-sealing ring 3" modules are stacked, the two first grooves of adjacent sealing rings 3 are spliced ​​to form a complete second terminal internal through-hole. The terminal passes through the hole, and the elastic material of the inner wall of the first groove tightly fits the terminal, realizing the splicing and sealing of the second terminal 231 and the sealing ring 3. A sealing block 34 is also provided on the shell end cover 11 at the position corresponding to the first groove of the sealing ring 3. The sealing block 34 is also provided with a first groove. During assembly, the first groove of the sealing ring 3 on the end side and the first groove of the sealing block 34 on the shell end cover 11 are spliced ​​to form the second terminal internal through-hole, realizing the passage and sealing of the second terminal 231 on the end side. Furthermore, a second groove 125 is provided at the corresponding position of the shell frame 12, and a second groove 125 is also provided on the shell end cover plate 11 to avoid the second wiring terminals 231 at various positions. The second wiring terminals 231 are spliced ​​out, and through the groove splicing to form a through hole, which not only adapts to the flexibility of multi-module stacking, but also uses the elastic deformation of the sealing ring 3 and the sealing block 34 to achieve sealing at the splicing point, avoiding leakage caused by gaps generated by module stacking.

[0043] One end of the first terminal 221 is fixedly connected to the first electrode plate 22 (e.g., by welding or bolt 41), and the other end passes sequentially through the inner through hole of the first terminal in the sealing ring 3 and the outer through hole 124 of the first terminal in the shell frame 12, extending to the outside of the electrolytic cell and connecting to the positive (or negative) terminal of the power supply, forming a direct conductive path between the first electrode plate 22 and the external circuit. Current is efficiently transmitted to the first electrode plate 22 through the terminal, providing electrical energy for the electrolytic reaction in the first electrolytic chamber; one end of the second terminal 231 is fixedly connected to the second electrode plate 23, and the other end is located at the adjacent sealing ring 3. The second terminal is formed by passing through the through holes in the module stack, and then through the through holes formed by splicing the end modules and the shell end cover plate 11 to the outside and connect to the negative (or positive) power supply, forming a conductive path between the second electrode plate 23 and the external circuit. The current is transmitted to the second electrode plate 23 through the terminal, driving the electrolysis reaction in the second electrolysis chamber. When multiple modules are stacked, the first and second terminals 231 of each module can be connected in parallel or in series (according to the circuit design requirements) to ensure that the electrodes of all electrolysis units 2 are energized synchronously, realizing multi-unit collaborative electrolysis.

[0044] The terminal lead-out structure of this embodiment, while ensuring the reliability of current conduction in the electrolyzer, further enhances the sealing integrity of the stacked system and adapts to the flexible assembly requirements of multiple modules. On the one hand, the through-type design of the first terminal 221 meets the lead-out requirements of the first terminal 221 and ensures the sealing performance of the ion exchange module 21. The splicing groove design of the second terminal perfectly adapts to the flexibility of multi-module stacking. There is no need to design a separate terminal lead-out structure for different stacking quantities. Through-hole adaptation can be achieved simply by splicing the grooves. Moreover, the splicing seal of the elastic material can adapt to the small errors of module stacking and avoid sealing failure due to assembly accuracy issues. At the same time, the terminal lead-out positions are uniformly standardized, which facilitates the connection and maintenance of external circuits. When a terminal of a certain module fails, the module can be disassembled and replaced individually without disassembling the entire stacked system, greatly reducing maintenance difficulty and cost, and further improving the practicality and market adaptability of the stacked electrolyzer.

[0045] In one embodiment, reference is made to Figure 5 , Figure 6 as well as Figure 11 The water inlet channel 121, the first water outlet channel 122, and the second water outlet channel 123 provided on the shell frame 12 are respectively configured to include a first channel segment 1201 and a second channel segment 1202 that are vertically connected. The first channel segment 1201 extends along the stacking direction of the shell frame 12, so that the corresponding first channel segments 1201 on multiple shell frames 12 after stacking are connected. The end of the second channel segment 1202 away from the first channel segment 1201 is connected to the corresponding first electrolysis chamber and / or second electrolysis chamber.

[0046] The first channel segment 1201 extends along the stacking axis of the shell frame 12 (i.e., the direction of the central axis of the module stack), and is opened in the edge area of ​​the shell frame 12 (such as the four corners or the middle of the side wall). The first channel segments 1201 of the water inlet channel 121, the first water outlet channel 122, and the second water outlet channel 123 on the same shell frame 12 are independent and do not communicate with each other. The aperture of the first channel segments 1201 of different shell frames 12 is completely consistent, and the central axis is precisely aligned in the stacking direction. When multiple shell frames 12 are stacked, the first channel segments 1201 of all water inlet channels 121 will be spliced ​​to form a continuous main water inlet channel, the first channel segments 1201 of all first water outlet channels 122 will be spliced ​​to form a main first water outlet channel, and the first channel segments 1201 of all second water outlet channels 123 will be spliced ​​to form a main second water outlet channel. The three types of main channels run in parallel and independently, constituting the common fluid transmission backbone of the entire electrolytic cell. The second channel segment 1202 extends radially (perpendicular to the stacking axis) along the inner frame 12, with one end perpendicularly connected to the first channel segment 1201 corresponding to the channel, and the other end extending to the inner wall of the inner frame 12, respectively connecting with the corresponding flow channel interface of the electrolysis unit 2. Specifically, the end of the second channel segment 1202 of the water inlet channel 121 away from the first channel segment 1201 simultaneously connects the water inlet 2111 of the ion exchange module 21 (corresponding to the first electrolysis chamber) and the second electrolysis chamber area enclosed by the sealing ring 3, realizing "main water inlet channel → first channel segment 1202". The first outlet channel 122 has a second channel section 1202 that is away from the first channel section 1201. The end of the second channel section 1202 of the first outlet channel 122 is connected to the outlet 2112 of the ion exchange module 21 (corresponding to the first electrolysis chamber), which is responsible for introducing the product water of the first electrolysis chamber into the total first outlet channel 122. The end of the second channel section 1202 of the second outlet channel 123 that is away from the first channel section 1201 is connected to the second electrolysis chamber area, which is responsible for introducing the product water of the second electrolysis chamber into the total second outlet channel 123.

[0047] External raw water first enters the main water inlet channel of the end shell frame 12 of the stacked system (composed of the first channel segment 1201 of all water inlet channels 121). The raw water flows along the main water inlet channel to all stacked shell frames 12. When the raw water flows through the first channel segment 1201 of the water inlet channel 121 of a certain shell frame 12, it will be diverted through the vertically connected second channel segment 1202, so that the second channel segment 1202 on each shell frame 12 will output water evenly, thereby achieving uniform distribution of raw water to each region of the electrolysis unit 2. After the raw water enters each electrolysis unit 2, part of the raw water enters the first electrolysis chamber and the other part of the raw water enters the second electrolysis chamber area, thereby achieving synchronous and uniform distribution to the two electrolysis chambers of each electrolysis unit 2, ensuring that the electrolysis reaction of all modules starts synchronously.

[0048] In this embodiment, the flow channel design of the shell-in-frame 12 is more standardized. Regardless of the number of stacked units, only the aperture and positioning of the first channel segment 1201 need to be standardized to achieve the splicing of the total channels, without the need to adjust the channel structure for different stacking specifications. More importantly, regardless of the number of electrolysis units 2 and shell-in-frame 12 stacked, all three types of total channels only need to be equipped with an external connector at the end of the stacked system (water inlet connector 111 connects to the total water inlet channel, the first water outlet connector 112 connects to the total first water outlet channel, and the second water outlet connector 113 connects to the total second water outlet channel) to achieve connection with external water sources and product water collectors. There is no need to set a separate connector for each shell-in-frame 12 or electrolysis unit 2, which completely simplifies the layout and installation process of external pipelines, reduces the complexity of pipeline connections and leakage risks, and is especially suitable for industrial scenarios with large-scale stacking of multiple modules.

[0049] In one embodiment, a waterproof ring is provided between any two adjacent shell frames 12 or between the shell frame 12 and the shell end cover plate 11, surrounding the first channel segment 1201, to avoid water leakage at the joint of the first channel segment 1201.

[0050] In one embodiment, reference is made to Figure 5 and Figure 6 One of the shell end cover plates 11 is provided with a water inlet connector 111, a first water outlet connector 112 and a second water outlet connector 113. The water inlet connector 111 is connected to the first channel section 1201 of the water inlet channel 121, the first water outlet connector 112 is connected to the first channel section 1201 of the first water outlet channel 122, and the second water outlet connector 113 is connected to the first channel section 1201 of the second water outlet channel 123.

[0051] On the inner side of the shell end cover 11 (the side facing the shell middle frame 12), corresponding to the positions of the main water inlet, the first main water outlet, and the second main water outlet formed after stacking, interface holes communicating with the connectors are respectively opened. That is, the inner port of the water inlet connector 111 is sealed and connected to the end opening of the main water inlet, the inner port of the first water outlet connector 112 is sealed and connected to the end opening of the first main water outlet, and the inner port of the second water outlet connector 113 is sealed and connected to the end opening of the second main water outlet. The connector and the shell end cover 11 are integrally formed (such as injection molding) or threaded connection (with sealant / sealing ring 3) to ensure no leakage between the connector and the cover. The outer port of the connector is designed with a standard interface form (such as quick-connect interface, threaded interface) to facilitate quick connection with external water source pipelines and product water collection pipelines. At the same time, the outer port can be equipped with a dust cover to prevent impurities from entering the channel when not in use.

[0052] An external water supply pipeline is connected to the stacked system through an inlet connector 111. Raw water flows into the main water inlet channel through the inlet connector 111, and then is distributed to the first and second electrolysis chambers of the corresponding electrolysis unit 2 through the second channel section 1202 of each shell frame 12, realizing centralized water supply of "external single interface → main channel → multiple units". The product water (such as acidic water) of the first electrolysis chamber flows into the main first water outlet channel through the second channel section 1202 of the first water outlet channel 122 of each shell frame 12, and is then discharged to the external collection pipeline through the first water outlet connector 112. The product water (such as alkaline water) of the second electrolysis chamber flows into the main second water outlet channel through the second channel section 1202 of the second water outlet channel 123 of each shell frame 12, and is then discharged to the external collection pipeline through the second water outlet connector 113, realizing centralized collection of "multiple units → main channel → external single interface".

[0053] In this embodiment, the inlet, first outlet, and second outlet connectors 113 are centrally located on the same end cover plate 11. This allows external pipelines to complete all fluid connections simply by connecting to this cover plate, eliminating the need to locate interfaces at different positions within the stacked system. This significantly simplifies the pipeline layout, reduces installation difficulty and labor costs, and avoids the problems of pipeline entanglement and misconnection that can result from multiple dispersed interfaces. Furthermore, the integrated or sealed connection design between the connectors and the end cover plate 11 reduces the number of interfaces (only three fixed connectors) compared to setting connectors separately on the inner frame 12, further reducing the risk of leakage. The standard interface type is compatible with most common pipelines on the market, improving the compatibility of the equipment with external systems. In addition, when it is necessary to disassemble or maintain the stacked modules, only the three connectors on the end cover plate 11 need to be disconnected, without having to disassemble the pipelines of each module individually, significantly improving the convenience of maintenance operations.

[0054] In one embodiment, combined with Figure 7 and Figure 8 One of the shell end cover plates 11 is provided with a nut 42, and the other shell end cover plate 11 and each of the shell middle frames 12 are provided with connecting holes. Bolts 41 pass through each of the connecting holes and connect to the nuts 42 to achieve stacking and fixing.

[0055] The axial preload generated when bolt 41 is tightened will create a tight pressure contact between the shell end cover plate 11, the shell middle frame 12, and the sealing ring 3, which will counteract the loosening of components caused by changes in fluid pressure and temperature during electrolysis and ensure the stability of the stacking system. The coaxial design of all connecting holes ensures that bolt 41 is subjected to uniform force, avoiding excessive local pressure that could cause deformation of the shell middle frame 12 or the electrolysis unit 2. When it is necessary to adjust the stacking quantity (such as adding / reducing the shell middle frame 12 and the electrolysis unit 2), it is only necessary to remove the original bolt 41 and replace it with a new bolt 41 of the corresponding length, without changing the structure of other components.

[0056] In this embodiment, by adapting the length of bolt 41 to the stacking quantity, there is no need to design separate fixing structures for different module quantities. For example, short bolt 41 can be used to stack two sets of modules, while only long bolt 41 needs to be replaced when stacking five sets of modules. This allows one fixing component to cover the stacking requirements of all specifications, significantly reducing design and production complexity. Furthermore, the standardized design of bolt 41 and connecting holes makes the shell end cover plate 11 and shell middle frame 12 interchangeable and universal across different batches, improving component compatibility. On the other hand, the through-type fixing of bolt 41 can apply uniform axial pressure, allowing the sealing ring 3 to be fully compressed under pressure, further improving the axial sealing performance of the stacking system and reducing the risk of fluid leakage. At the same time, the assembly and disassembly process is simple; fixing or disassembly can be completed simply by tightening / unscrewing bolt 41, without the need for special tools, greatly shortening assembly time and reducing operational difficulty.

[0057] In one embodiment, combined with Figures 1-2 The inner shell 1 also includes an outer shell 5, which includes a first shell sleeve 51 and a second shell sleeve 52. The first shell sleeve 51 includes a first shell panel 511 and a first shell wall 512 connected together. The second shell sleeve 52 includes a second shell panel 521 and a second shell wall 522 connected together. The first shell sleeve 51 and the second shell sleeve 52 are respectively fitted onto the corresponding sides of the two shell end cover plates 11 of the inner shell 1. The first shell wall 512 is fitted onto the outside of the second shell wall 522. The first shell wall 512 and the second shell wall 522 can be slidably adjusted relative to each other according to the stacking height of the inner shell 1.

[0058] The first shell 51 is composed of an integrally formed first shell panel 511 and a first shell wall 512. The first shell panel 511 is a flat plate structure (such as circular or rectangular) adapted to the size of the end cover plate of the inner shell 1, used to cover the end cover plate 11 of one end of the inner shell 1. The first shell wall 512 is an annular wall (such as cylindrical or square) extending vertically along the edge of the first shell panel 511. The inner diameter of the wall is larger than the outer diameter of the second shell wall 522, ensuring that the second shell wall 522 can be nested inside it and slide smoothly. The inner wall of the first shell wall 512 can be provided with guide protrusions or grooves to improve the stability of the sliding process. The second shell 52 is symmetrical to the first shell 51 in structure and is composed of an integrally formed second shell panel 521 and a second shell wall 522. The second shell panel 521 covers the shell end cover 11 at the other end of the inner shell 1. The second shell wall 522 extends vertically along the edge of the second shell panel 521, and its outer diameter matches the inner diameter of the first shell wall 512, forming a nested structure in which the first shell wall 512 fits the second shell wall 522. The outer wall of the second shell wall 522 can be provided with grooves or slide rails corresponding to the guide structure of the first shell wall 512 to avoid deviation during sliding.

[0059] In this embodiment, when the stacking height of the inner shell 1 changes (e.g., increasing / decreasing the number of inner frame 12 and electrolysis unit 2, causing the total height of the inner shell 1 to rise / fall), the outer shell 5 achieves size adaptation through the relative sliding of the first shell wall 512 and the second shell wall 522. If the stacking height of the inner shell 1 increases, the first shell wall 512 and the second shell wall 522 slide apart along the guide structure, causing the overall height of the outer shell 5 to increase synchronously until the first shell panel 511 and the second shell panel 521 respectively attach to the shell end cover plates 11 at both ends of the inner shell 1; if the stacking height of the inner shell 1 decreases, the two slide and contract towards each other, and the overall height of the outer shell 5 decreases synchronously, always maintaining complete enclosure of the inner shell 1. After the outer shell 5 is assembled, the first shell wall 512 and the second shell wall 522 form a closed wall surrounding the inner shell 1, which can isolate the influence of external dust, moisture, and impact on the internal electrolysis unit 2 and fluid channels, avoiding malfunctions caused by external environmental interference during the electrolysis process.

[0060] In one embodiment, the first housing 51 is fixed to one of the housing end cover plates 11 by a first screw 513, and the second housing 52 is fixed to the other housing end cover plate 11 by a second screw 523.

[0061] On the first shell panel 511 of the first shell sleeve 51, corresponding to the screw hole position of one of the shell end cover plates 11 of the inner shell 1, a through hole (or countersunk hole, to avoid the screw head protruding and affecting the appearance and operation) matching the outer diameter of the first screw 513 is opened. During assembly, the first screw 513 passes through the through hole of the first shell panel 511 and is screwed into the pre-set threaded hole of the shell end cover plate 11. The first shell sleeve 51 and the shell end cover plate 11 are rigidly fixed by thread engagement. The number of screws is usually 2 to 4, evenly distributed along the edge of the first shell panel 511 (such as the four corners of a rectangular panel, or the symmetrical position of a circular panel) to ensure that the fixing force is evenly transmitted and to avoid relative misalignment between the first shell sleeve 51 and the shell end cover plate 11. At the same time, the length of the first screw 513 needs to be precisely controlled so that it only penetrates the surface of the shell end cover plate 11 and does not extend into the interior of the inner shell 1 to interfere with the electrolysis unit 2 or the fluid channel. The fixing structure and logic of the second screw 523 are the same as those of the first screw 513.

[0062] The fixing positions of the first screw 513 and the second screw 523 avoid the nesting area of ​​the first shell wall 512 and the second shell wall 522, and only act on the connection between the shell panel and the shell end cover 11, without hindering the relative sliding of the first shell wall 512 and the second shell wall 522.

[0063] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0064] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0065] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0066] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A stacked electrolytic cell, characterized in that, include: The inner shell (1) includes two shell end cover plates (11) and a plurality of shell middle frames (12), wherein the shell middle frames (12) are stacked between the two shell end cover plates (11) to form an installation cavity; Electrolysis units (2) are stacked in the mounting cavity in a one-to-one correspondence with the number of shell frames (12); each electrolysis unit (2) includes an ion exchange module (21), a first electrode plate (22) and a second electrode plate (23), the ion exchange module (21) has a first electrolysis chamber inside, and the first electrode plate (22) is disposed in the first electrolysis chamber; a second electrolysis chamber is formed between the ion exchange module (21) and the shell end cover plate (11), and between any two adjacent ion exchange modules (21), and the second electrode plate (23) is disposed in the second electrolysis chamber; Each of the shell frames (12) is provided with a water inlet channel (121), a first water outlet channel (122) and a second water outlet channel (123). The water inlet channel (121) connects the first electrolysis chamber and the second electrolysis chamber, the first water outlet channel (122) connects the first electrolysis chamber, and the second water outlet channel (123) connects the second electrolysis chamber.

2. The stacked electrolytic cell according to claim 1, characterized in that, The ion exchange module (21) includes a module frame (211) and two ion exchange membranes (212). The ion exchange membranes (212) are sealed and connected to the module frame (211) on all four sides, forming the first electrolysis chamber between the two ion exchange membranes (212).

3. The stacked electrolytic cell according to claim 2, characterized in that, The module frame (211) is provided with an inlet (2111) and an outlet (2112) that connect the first electrolysis chamber. The inlet (2111) is connected to the inlet channel (121), and the outlet (2112) is connected to the first outlet channel (122).

4. The stacked electrolytic cell according to claim 1, characterized in that, It also includes sealing rings (3) that correspond one-to-one with the shell frame (12). The sealing rings (3) are arranged around the ion exchange module (21) between the ion exchange module (21) and the shell frame (12). In the stacked state, any two adjacent sealing rings (3) are sealed together, and the sealing rings (3) on the end side are sealed together with the shell end cover plate (11). The sealing ring (3) is provided with a water inlet hole (31), a first water outlet hole (32) and a second water outlet hole (33). The water inlet channel (121) is connected to the first electrolysis chamber and the second electrolysis chamber through the water inlet hole (31). The first water outlet channel (122) is connected to the first electrolysis chamber through the first water outlet hole (32). The second water outlet channel (123) is connected to the second electrolysis chamber through the second water outlet hole (33).

5. The stacked electrolytic cell according to claim 4, characterized in that, The first electrode plate (22) is connected to a first terminal (221), and the second electrode plate (23) is connected to a second terminal (231); Along the extension path of the first terminal (221), the sealing ring (3) is provided with a first terminal inner through hole, and the housing frame (12) is provided with a first terminal outer through hole (124). The first terminal (221) extends outward through the first terminal inner through hole and the first terminal outer through hole (124). Along the extension path of the second terminal (231), the two opposite sides of the sealing ring (3) are respectively provided with a first groove, and the shell frame (12) is provided with a corresponding second groove (125); the shell end cover plate (11) is provided with a sealing block (34) at the position of the first groove of the sealing ring (3), and the sealing block (34) is also provided with the first groove. Any two adjacent first grooves form a second terminal inner through hole; the shell end cover plate (11) is also provided with a second groove (125) at the position of the second groove (125) of the shell frame (12), and any two adjacent second grooves (125) form a second terminal outer through hole. The second terminal (231) extends outward through the second terminal inner through hole and the second terminal outer through hole.

6. The stacked electrolytic cell according to claim 1, characterized in that, The water inlet channel (121), the first water outlet channel (122), and the second water outlet channel (123) provided on the shell frame (12) are respectively configured to include a first channel segment (1201) and a second channel segment (1202) that are vertically connected. The first channel segment (1201) extends along the stacking direction of the shell frame (12), so that the corresponding first channel segments (1201) on multiple shell frames (12) after stacking are connected. The end of the second channel segment (1202) away from the first channel segment (1201) is connected to the corresponding first electrolysis chamber and / or second electrolysis chamber.

7. The stacked electrolytic cell according to claim 6, characterized in that, One of the shell end cover plates (11) is provided with a water inlet connector (111), a first water outlet connector (112) and a second water outlet connector (113). The water inlet connector (111) is connected to the first channel section (1201) of the water inlet channel (121), the first water outlet connector (112) is connected to the first channel section (1201) of the first water outlet channel (122), and the second water outlet connector (113) is connected to the first channel section (1201) of the second water outlet channel (123).

8. The stacked electrolytic cell according to claim 1, characterized in that, One of the shell end cover plates (11) is provided with a nut (42), and the other shell end cover plate (11) and each of the shell middle frames (12) are provided with connecting holes. Bolts (41) pass through each of the connecting holes and connect to the nuts (42) to achieve stacking and fixing.

9. The stacked electrolytic cell according to claim 1, characterized in that, It also includes an outer shell (5), which includes a first shell sleeve (51) and a second shell sleeve (52). The first shell sleeve (51) includes a first shell panel (511) and a first shell wall (512) connected together. The second shell sleeve (52) includes a second shell panel (521) and a second shell wall (522) connected together. The first shell sleeve (51) and the second shell sleeve (52) are respectively fitted onto each other from the corresponding sides of the two shell end cover plates (11) of the inner shell (1). The first shell wall (512) is fitted onto the outside of the second shell wall (522). According to the stacking height of the inner shell (1), the first shell wall (512) and the second shell wall (522) can be adjusted relative to each other by sliding.

10. The stacked electrolytic cell according to claim 9, characterized in that, The first housing (51) is fixed to one of the housing end plates (11) by a first screw (513), and the second housing (52) is fixed to the other housing end plate (11) by a second screw (523).

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