Method for transversely assembling PEM electrolytic cell

Abstract

The invention relates to an innovative method for transversely assembling a PEM electrolytic cell and a matched device thereof, which are specially used for solving the problems of tedious steps, easiness in dislocation of parts, low assembling efficiency and the like in the traditional assembling process. According to the method, the assembly process is simplified, and the advanced viscose hot pressing technology and vulcanization bonding technology are adopted, so that firm connection among the anode frame, the membrane electrode and the cathode frame and stable combination of the bipolar plate and the membrane electrode assembly are ensured. Besides, the device comprises an assembling platform, a stacking device, an extruding and fixing device and an adhesive hot-pressing device, and the design of the devices ensures the accurate position and sequence of the parts in the assembling process, so that the problems of dislocation and reversing are avoided, and the assembling precision is remarkably improved. Through the improvements, the production efficiency and the product quality of the PEM electrolytic bath are greatly improved, the production cost is effectively reduced, the market competitiveness is enhanced, and the PEM electrolytic bath has important industrial application value.

Description

Technical Field

[0001] The present invention relates to a water electrolysis hydrogen production device, and more particularly to a method and device for horizontally assembling a PEM electrolyzer. The technology mainly solves the problems of multiple assembly steps, easy misalignment, and low efficiency in the existing PEM electrolyzer assembly process, and improves the assembly accuracy and efficiency of the PEM electrolyzer by improving the assembly process and device. Background Art

[0002] With the transformation of the global energy structure and the continuous development of hydrogen energy technology, the performance and efficiency of PEM electrolyzers, as key equipment for hydrogen production by electrolysis of water, have received widespread attention. The traditional assembly method of PEM electrolyzers has many problems, such as cumbersome assembly steps, easy misalignment or reversal between components, and low assembly efficiency. These problems not only affect the performance of PEM electrolyzers, but also increase production costs and cycles.

[0003] In order to solve the above problems, the present invention provides a method for lateral assembly of PEM electrolyzers. The method achieves efficient and precise assembly of PEM electrolyzers by optimizing the assembly process, thereby improving production efficiency and product quality. Summary of the invention

[0004] The purpose of the present invention is to provide a method for lateral assembly of PEM electrolyzers to solve the problems of multiple assembly steps, easy misalignment, low efficiency, etc. in the prior art. Through the present invention, efficient and accurate assembly of PEM electrolyzers can be achieved, and production efficiency and product quality can be improved.

[0005] Horizontal assembly method A method for transversely assembling a PEM electrolyzer of the present invention comprises the following steps: Preparation stage: prepare the required materials and tools, including anode frame, membrane electrode, cathode frame, bipolar plate, anode gas diffusion layer, cathode gas diffusion layer, etc.

[0006] Preparation of membrane electrode assembly: The stacked anode frame, membrane electrode and cathode frame are glued and hot pressed to form a membrane electrode assembly. This step uses glue hot pressing technology to form a whole between the anode frame, membrane electrode and cathode frame, avoiding misalignment and reversal problems in the subsequent assembly process.

[0007] Preparation of electrolytic cell: The bipolar plate, anode gas diffusion layer, membrane electrode assembly and cathode gas diffusion layer are stacked in sequence to form an electrolytic cell. During the stacking process, the position and sequence of each component are precisely controlled to ensure the stability of the structure and performance of the electrolytic cell.

[0008] PEM electrolyzer assembly: The anode terminal plate, several electrolytic cells and cathode terminal plate are stacked and squeezed to form a PEM electrolyzer. This step uses the squeezing and fixing technology to tightly connect the various components of the PEM electrolyzer to ensure its overall performance and stability.

[0009] Horizontal assembly device In order to implement the above-mentioned transverse assembly method, the present invention also provides a device for transversely assembling a PEM electrolyzer, comprising: Assembly platform: used to carry and fix the various components of the PEM electrolyzer to ensure stability and accuracy during the assembly process.

[0010] Stacking device: used to stack the bipolar plates, anode gas diffusion layer, membrane electrode assembly and cathode gas diffusion layer in sequence to form an electrolytic cell.

[0011] Extrusion fixing device: used to stack and extrude the anode terminal plate, several electrolytic cells and the cathode terminal plate in sequence to form a PEM electrolytic cell.

[0012] The method and device for horizontally assembling a PEM electrolyzer provided by the present invention have the following beneficial effects: Improve assembly efficiency: By optimizing the assembly process and device design, the assembly steps and time are reduced, and the assembly efficiency is improved.

[0013] Ensure assembly accuracy: By precisely controlling the position and sequence of each component, misalignment and reverse problems are avoided, ensuring assembly accuracy.

[0014] Improve product quality: By optimizing the assembly process and device design, the overall performance and stability of the PEM electrolyzer are ensured and the product quality is improved.

[0015] Reduce production costs: By improving assembly efficiency and accuracy, the scrap rate and rework rate are reduced, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : Diagram of the membrane electrode assembly structure.

[0017] Figure 2 : Electrolytic cell component structure diagram.

[0018] Figure 3 : Horizontal assembly system.

[0019] Figure 4 : Horizontal assembly diagram of PEM electrolyzer.

[0020] Wherein: the above drawings include the following reference numerals: 101, lateral assembly positioning hole; 201, bipolar plate; 202, cathode diffusion layer; 203, anode diffusion layer; 204, membrane electrode assembly; 301, extrusion fixing device; 302, positioning pin; 401, electrolytic cell assembly; DETAILED DESCRIPTION

[0021] Preparation of membrane electrode assembly When preparing the membrane electrode assembly, first place the anode frame and cathode frame on the anode side and cathode side of the membrane electrode respectively. Then, apply glue on the side of the anode frame and cathode frame close to the membrane electrode, and place the anode frame, membrane electrode and cathode frame under a hot press for hot pressing. During the hot pressing process, the temperature and time parameters are controlled to ensure a strong bond between the anode frame, membrane electrode and cathode frame. Through this step, an integrated membrane electrode assembly is formed, avoiding the problems of misalignment and reversal in the subsequent assembly process.

[0022] Preparation of electrolytic cell When preparing an electrolytic cell, firstly, the side of the bipolar plate with the anode gas diffusion layer is fixed to the side of the membrane electrode assembly with the anode frame, or the side of the bipolar plate with the cathode gas diffusion layer is fixed to the side of the membrane electrode assembly with the cathode frame by vulcanization bonding. During the vulcanization bonding process, the sealing material mixed rubber is first injected into a preforming mold for preforming to form a preformed rubber strip. Then, a coupling agent is coated on the bonding position of the bipolar plate and the membrane electrode assembly, and the bipolar plate coated with the coupling agent, the preformed rubber strip and the membrane electrode assembly coated with the coupling agent are sequentially placed in the transfer mold for vulcanization. After the vulcanization is completed, the vulcanized bipolar plate and membrane electrode assembly are placed in a hot air oven for drying and fixing. Through this step, an electrolytic cell with a stable structure and excellent performance is formed.

[0023] Assembly of PEM electrolyzer When assembling a PEM electrolyzer, first stack the anode terminal plate, several electrolytic cells, and cathode terminal plate in sequence. Then use an extrusion fixing device to squeeze and fix the stacked components to ensure that the components are tightly connected. During the extrusion fixing process, the extrusion pressure and displacement parameters are controlled to ensure the overall performance and stability of the PEM electrolyzer. Through this step, an efficient and stable PEM electrolyzer is formed.

[0024] Device Implementation In order to realize the above-mentioned transverse assembly method, the present invention provides a device for transversely assembling PEM electrolyzers. The device includes an assembly platform, a glue hot pressing device, a stacking device and an extrusion fixing device. The assembly platform is used to carry and fix the various components of the PEM electrolyzer; the glue hot pressing device is used to glue and hot press the anode frame, the membrane electrode and the cathode frame to form a membrane electrode assembly; the stacking device is used to stack the bipolar plate, the anode gas diffusion layer, the membrane electrode assembly and the cathode gas diffusion layer in sequence to form an electrolytic cell; the extrusion fixing device is used to stack and extrude and fix the anode terminal plate, several electrolytic cells and the cathode terminal plate in sequence to form a PEM electrolyzer. Through this device, efficient and precise assembly of the PEM electrolyzer can be achieved. Example

[0025] This embodiment provides a method for horizontally assembling a PEM electrolyzer, and the specific steps are as follows: Preparation stage: prepare the required materials and tools, including anode frame, membrane electrode, cathode frame, bipolar plate, anode gas diffusion layer, cathode gas diffusion layer, etc.

[0026] Preparation of membrane electrode assembly: stack the anode frame, membrane electrode and cathode frame in sequence, and apply glue on the side of the anode frame and cathode frame close to the membrane electrode. Then, place the stacked parts under a hot press for hot pressing to form a membrane electrode assembly.

[0027] Preparation of electrolytic cell: The side of the bipolar plate with the anode gas diffusion layer is fixed to the side of the membrane electrode assembly with the anode frame by vulcanization bonding. Then, the anode gas diffusion layer, the membrane electrode assembly, the cathode gas diffusion layer and the bipolar plate are stacked in sequence to form an electrolytic cell.

[0028] PEM electrolyzer assembly: The anode terminal plate, several electrolytic cells and the cathode terminal plate are stacked in sequence and squeezed and fixed using an extrusion fixing device to form a PEM electrolyzer. Example

[0029] This embodiment provides a device for assembling a PEM electrolyzer horizontally, and the specific structure is as follows: Assembly platform: A high-strength, high-flatness platform is used to carry and fix the various components of the PEM electrolyzer.

[0030] Glue hot pressing device: includes a hot press machine and a glue supply system, which is used to glue and hot press the anode frame, membrane electrode and cathode frame to form a membrane electrode assembly.

[0031] Stacking device: includes a robotic arm and a positioning system, which is used to stack the bipolar plates, anode gas diffusion layers, membrane electrode assemblies and cathode gas diffusion layers in sequence to form an electrolytic cell.

[0032] Extrusion and fixing device: including a hydraulic press and a pressure control system, used to stack and extrude the anode terminal plate, a plurality of electrolytic cells and the cathode terminal plate in sequence to form a PEM electrolytic cell.

Claims

1. A method for assembling a PEM electrolyzer transversely, characterized in that: The following steps are involved: Preparation stage: prepare the required materials and tools, including anode frame, membrane electrode, cathode frame, bipolar plate, anode gas diffusion layer, cathode gas diffusion layer; Preparation of membrane electrode assembly: Through adhesive hot pressing technology, the anode frame, membrane electrode and cathode frame stacked in sequence are formed into a membrane electrode assembly; Preparation of electrolytic cell: stacking bipolar plates, anode gas diffusion layers, membrane electrode assemblies and cathode gas diffusion layers in sequence to form an electrolytic cell; PEM electrolyzer assembly: The anode terminal plate, several electrolytic cells and the cathode terminal plate are stacked and squeezed and fixed in sequence to form a PEM electrolyzer.

2. The method for transversely assembling a PEM electrolyzer according to claim 1, wherein in the membrane electrode assembly preparation step, the temperature and time parameters during the hot pressing process are precisely controlled to ensure a firm bond between the anode frame, the membrane electrode and the cathode frame.

3. The method for transversely assembling a PEM electrolyzer according to claim 1 or 2, wherein in the electrolyzer preparation step, the bipolar plate and the membrane electrode assembly are fixed by vulcanization bonding technology.

4. A device for implementing the method for lateral assembly of a PEM electrolyzer according to claim 1, characterized in that: include: Assembly platform: used to carry and fix the various components of the PEM electrolyzer; Stacking device: used to stack the bipolar plate, the anode gas diffusion layer, the membrane electrode assembly and the cathode gas diffusion layer in sequence to form an electrolytic cell; Extrusion fixing device: used to stack and extrude the anode terminal plate, several electrolytic cells and the cathode terminal plate in sequence to form a PEM electrolytic cell.

5. The device according to claim 4, wherein the stacking device includes a robotic arm and a positioning system for accurately controlling the position and sequence of each component.

6. The device according to claim 4 or 5, wherein the extrusion fixture comprises a hydraulic press and a pressure control system for controlling the extrusion pressure and displacement parameters.

7. The device according to claim 4 further comprises a glue hot pressing device for hot pressing the anode frame, the membrane electrode and the cathode frame to form a membrane electrode assembly.

8. The device according to claim 7, wherein the adhesive hot pressing device comprises a hot press and an adhesive supply system.

9. A PEM electrolyzer, characterized in that: It is prepared by the method according to any one of claims 1 to 3.

10. A PEM electrolyzer prepared using the device according to any one of claims 4 to 8.

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