Collector plate assembly of electrolytic bath
By embedding the manifold onto the insulating plate and installing a seal around the outer periphery of the main manifold, the problems of metal ion precipitation and uneven fluid distribution during the manifold encapsulation and integration were solved, resulting in cost reduction and improved fluid distribution uniformity.
Patent Information
- Application Number
- CN202423128171.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Existing current collector packaging and integration suffers from high costs, complex processes, difficulty in effectively preventing metal ion precipitation in the long term, and insufficient fluid distribution balance.
An electrolytic cell manifold assembly was designed. By embedding the manifold in the groove of the insulating plate and installing a seal on the outer periphery of the main manifold, the electrolyte and the manifold are sealed and isolated. The main manifold and the flow channel plate have the same shape, which alleviates the eddy current phenomenon and improves the uniformity of fluid distribution.
It effectively avoids metal ion precipitation in the current collector, reduces costs, simplifies the process, and improves the uniformity of fluid distribution and current flux.
Smart Images
Figure CN223592843U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of stack type electrolytic cell, especially relates to a kind of electrolytic cell current collector plate assembly. BACKGROUND
[0002] Electrolytic cell is the device that chemical energy is converted into by electrolytic reaction, is widely used in chemical industry, metallurgy, energy etc., especially in hydrogen production and wastewater treatment and other fields have important role. Among them, stack type electrolytic cell is a kind of by stacking multiple unit cells to increase overall voltage and current output point solution device, each unit cell is composed of anode, cathode and electrolyte.
[0003] One of electrolytic cell core components is current collector plate, it is responsible for evenly distributing current to each unit cell in electrolytic cell, ensure that electrolytic reaction is efficiently carried out, and the performance of current collector plate directly affects the overall efficiency and life of electrolytic cell, and the role of current collector plate packaging integration is to realize the current transmission of electrolytic cell cathode, anode and external circuit, and has the function of insulation protection.
[0004] The current collector plate packaging integration is usually that current collector plate covers the flow channel plate of electrolytic cell, and is insulated from the outside by insulating paper or insulating plate, and the main manifold of electrolytic cell penetrates the insulating plate and current collector plate to enter the flow channel plate of electrolytic cell. Since the electrolyte of electrolytic cell is usually acidic or alkaline, the current collector plate is usually made of metal material, so the noble metal with good conductivity is usually used for surface treatment of current collector plate, or epoxy coating is used on the edge of the main manifold of current collector plate, so that when the electrolyte flows through the main manifold and current collector plate, the metal ions of current collector plate are avoided to be precipitated. And the external pipeline of electrolytic cell is usually different from the shape of the main manifold of flow channel plate, so the variable-diameter transition needs to be made on the current collector plate packaging integration, and vortex is easy to be generated in the variable-diameter area, which reduces the balance of fluid distribution in the flow channel plate. Therefore, the existing technical solutions mostly have problems such as high cost, complex process, difficult to effectively avoid the precipitation of metal ions of current collector plate for a long time, loss of insulation function due to damage of insulating paper, and insufficient balance of fluid distribution in the flow channel plate of electrolytic cell. UTILITY MODEL CONTENTS
[0005] In order to overcome the problems in the above-mentioned prior art, the utility model provides a kind of electrolytic cell current collector plate assembly, current collector plate is sealed from electrolyte, effectively avoids the precipitation of metal ions of current collector plate, realizes the balanced distribution of electrolytic cell flow channel plate fluid.
[0006] A kind of electrolytic cell current collector plate assembly, including insulating plate, current collector plate embedded on the insulating plate and the main manifold assembly located at the two sides of the current collector plate;Wherein, the main manifold assembly includes main manifold pipeline and sealing element arranged on the outer periphery of the main manifold pipeline.
[0007] Further, the insulating plate is provided with a sink groove matched with the current collecting plate, and the current collecting plate is embedded in the sink groove along the thickness direction.
[0008] Further, the sealing member comprises a sealing groove and a sealing ring, the sealing groove is arranged on the outer periphery of the main manifold pipeline, and the sealing ring is arranged in the sealing groove.
[0009] Further, the current collecting plate is provided with a plurality of lugs, and the lugs are connected with external conductive elements of the electrolytic cell.
[0010] Further, the lugs are arranged on one side of the current collecting plate or oppositely arranged on both sides of the current collecting plate.
[0011] Preferably, the shape of the lug is rectangular, circular, oval, T-shaped, L-shaped, zigzag or triangular.
[0012] Further, the current collecting plate assembly is located between the flow channel plate and the end plate of the electrolytic cell.
[0013] Further, the profile of the sink groove is matched with the shape of the outer edge of the current collecting plate, and the depth of the sink groove is consistent with the thickness of the current collecting plate.
[0014] Further, the number of the main manifold pipelines is consistent with the number of the external pipelines on the electrolytic cell, and the shape of the main manifold pipeline is consistent with the shape of the flow channel plate pipeline on the flow channel plate.
[0015] The utility model discloses the advantages are:
[0016] The utility model provides a kind of current collecting plate assembly of electrolytic cell, by shortening the size of current collecting plate and embedding in insulating plate along thickness direction, and being provided with the main manifold pipeline of being consistent with the shape of flow channel plate pipeline on insulating plate, while installing sealing member on the outer periphery of main manifold pipeline, realize the sealing isolation of electrolyte and current collecting plate, compared with prior art, can effectively avoid the precipitation of current collecting plate metal ion, process is simple, save current collecting plate material while making current collecting plate have high current flux, improve the uniformity of fluid distribution. DRAWINGS
[0017] Figure 1 It is the structure schematic diagram of the utility model electrolytic cell current collecting plate assembly;
[0018] Figure 2 It is the utility model electrolytic cell insulating plate schematic diagram;
[0019] Figure 3 It is the main manifold assembly in the utility model electrolytic cell current collecting plate assembly schematic diagram;
[0020] Figure 4 It is the utility model electrolytic cell current collecting plate schematic diagram;
[0021] Figure 5 is the decomposition structure schematic view of the electrolytic cell current collecting plate assembly of the utility model;
[0022] Figure 6 is the integrated position schematic view of the electrolytic cell current collecting plate assembly of the utility model;
[0023] Figure 7 is the structural view of the electrolytic cell of the utility model;
[0024] Reference signs: 1, insulating plate;11, sink;2, current collecting plate;21, lug;3, main manifold assembly;31, main manifold pipeline;32, sealing groove;33, sealing ring;4, flow channel plate;41, flow channel plate pipeline;5, end plate;6, core;7, encapsulation rod. DETAILED DESCRIPTION
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0026] It should be noted that the various installation modes and technical terms mentioned in the utility model are technical terms well known in the art, and therefore will not be explained in more detail. In addition, the same reference signs are used for the same components, but this does not affect or should not constitute an accurate understanding of the technical solutions by those skilled in the art.
[0027] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0028] Embodiment 1
[0029] The embodiment provides an electrolytic cell current collecting plate assembly, which comprises Figures 1-3As shown, it comprises an insulating plate 1, a current collecting plate 2 embedded in the insulating plate 1, and a main manifold assembly 3 located on both sides of the current collecting plate 2; wherein the main manifold assembly 3 comprises a main manifold pipeline 31 and a sealing member arranged on the outer periphery of the main manifold pipeline 31, the sealing member comprises a sealing groove 32 and a sealing ring 33, the sealing groove 32 is arranged on the outer periphery of the main manifold pipeline 31, and the sealing ring 33 is arranged in the sealing groove 32.
[0030] As shown in the drawings, Figure 6 The current collecting plate assembly is located between the flow channel plate 4 and the end plate 5 of the electrolytic cell, wherein one end of the current collecting plate 2 embedded in the insulating plate 1 faces the flow channel plate 4 of the electrolytic cell, and the other end of the insulating plate 1 faces the end plate 5 of the electrolytic cell.
[0031] As shown in the drawings, Figure 4 In this embodiment, as a preferred embodiment, a plurality of rectangular lugs 21 are arranged on both sides of the current collecting plate 2, and connecting holes are arranged on the lugs 21 to connect with external conductive elements, so as to improve the current flux of the current collecting plate 2.
[0032] The insulating plate 1 is provided with a recessed groove 11, the profile of the recessed groove 11 matches the shape of the outer edge of the current collecting plate 2, and the depth of the recessed groove 11 is consistent with the thickness of the current collecting plate 2, so that the current collecting plate 2 is embedded in the recessed groove 11 in the thickness direction (in the prior art, the current collecting plate is a plate with the same size as the insulating plate, and in this embodiment, the size of the current collecting plate on both sides is shortened to match the recessed groove on the insulating plate).
[0033] The number of the main manifold pipeline 31 is consistent with the number of the external pipeline on the electrolytic cell, and the shape is consistent with the shape of the flow channel plate pipeline 41 on the flow channel plate 4, so that when the fluid enters the flow channel plate 4 of the electrolytic cell through the main manifold pipeline 31 of the insulating plate 1, the vortex phenomenon of the fluid can be alleviated, and the uniformity of the fluid distribution in the flow channel plate 4 of the electrolytic cell can be improved.
[0034] The sealing ring 33 matches the shape of the sealing groove 32 to realize the sealing of the fluid in the main manifold pipeline 31, the inner side of the sealing ring 33 is sealed with the flow channel plate 4, and the outer side of the sealing ring 33 is sealed with the end plate 5.
[0035] The integration process of the current collecting plate assembly and the electrolytic cell assembly is as shown in the drawings, Figure 5As shown, the current collecting plate 2 can be installed downwardly, embedded in the sink 11 of the insulating plate 1, the profile and depth of the sink 11 of the insulating plate 1 match the current collecting plate 2, so that the current collecting plate 2 is limited and can be in good contact with the flow channel plate 4 of the electrolytic cell, the sealing ring 33 is installed in the sealing groove 32 around the main manifold pipeline 31 on the insulating plate 1, the inner side of the sealing ring 33 is sealed and compressed with the flow channel plate 4 of the electrolytic cell, and the outer side of the sealing ring 33 is sealed and compressed with the end plate 5 of the electrolytic cell, so as to seal the fluid in the main manifold pipeline 31 on the insulating plate 1, avoid the contact of the electrolyte with the current collecting plate 2, and realize the insulation protection function of the insulating plate 1 to the flow channel plate 4 of the electrolytic cell, the current collecting plate 2 and the end plate 5 of the electrolytic cell. The electrolytic cell obtained after the current collecting plate assembly and the electrolytic cell assembly are integrated is as shown in Figure 7 As shown, the flow channel plate 4 and the membrane electrode multilayer are repeatedly superimposed and combined to form a core 6, the current collecting plate assembly is located between the end plate 5 and the core 6, and the positioning of the core 6 and the packaging of the electrolytic cell are realized through the packaging rod 7.
[0036] For those skilled in the art, the utility model is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model; therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any slight modification, equivalent replacement and improvement according to the technical essence of the utility model on the above embodiments should be included in the protection scope of the technical scheme of the utility model.
Claims
1. An electrolyser cell busbar assembly characterised in that, The application relates to a main manifold assembly for an electrolytic cell, comprising an insulation plate (1), a current collecting plate (2) embedded in the insulation plate (1), and a main manifold assembly (3) located on both sides of the current collecting plate (2); wherein the main manifold assembly (3) comprises a main manifold pipeline (31) and a sealing member arranged on the outer periphery of the main manifold pipeline (31).
2. An electrolyser cell busbar assembly according to claim 1, wherein, The insulation plate (1) is provided with a sink groove (11) matched with the current collecting plate (2), and the current collecting plate (2) is embedded in the sink groove (11) along the thickness direction.
3. An electrolyzer current collector plate assembly according to claim 1, wherein, The sealing member comprises a sealing groove (32) and a sealing ring (33), the outer periphery of the main manifold pipeline (31) is provided with the sealing groove (32), and the sealing ring (33) is arranged in the sealing groove (32).
4. An electrolyzer current collector plate assembly according to claim 1, wherein, The current collecting plate (2) is provided with a plurality of lugs (21), and the lugs (21) are connected with external conductive elements of the electrolytic cell.
5. An electrolyser cell busbar assembly according to claim 4, wherein, The lugs (21) are arranged on one side of the current collecting plate (2) or on both sides of the current collecting plate (2).
6. An electrolyser cell busbar assembly according to claim 4 or 5, wherein, The lugs (21) are rectangular, circular, oval, T-shaped, L-shaped, zigzag-shaped or triangular.
7. An electrolyzer current collector plate assembly according to claim 1 or 4, wherein, The lugs (21) are located between the flow channel plate (4) and the end plate (5) of the electrolytic cell.
8. An electrolyser cell busbar assembly according to claim 2, wherein, The profile of the sink groove (11) is matched with the shape of the outer edge of the current collecting plate (2), and the depth of the sink groove (11) is consistent with the thickness of the current collecting plate (2).
9. An electrolytic cell busbar assembly according to claim 7, wherein, The number of the main manifold pipeline (31) is consistent with the number of the external pipeline of the electrolytic cell, and the shape of the main manifold pipeline (31) is consistent with the shape of the flow channel plate pipeline (41) located on the flow channel plate (4).