Tool suitable for preparing AEM electrolytic cell membrane electrode
By designing tooling suitable for AEM electrolyzer membrane electrodes, using soft gaskets to push away bubbles and hard gaskets to ensure flatness, combined with a spring locating pin group to prevent dislocation, the bubble and flatness problems of AEM electrolyzer membrane electrodes are solved and the packaging quality is improved.
Patent Information
- Application Number
- CN202422883577.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-26
AI Technical Summary
In the preparation process of membrane electrodes for AEM electrolyzers, the existing packaging process is difficult to avoid bubble and flatness problems, especially when packaging at low temperatures. The bubbles cannot be completely discharged, resulting in membrane electrode flatness defects.
A tooling design including a main cover plate, a main bottom plate, a spring locating pin group and a gasket group is adopted. Soft gaskets are used to push away bubbles, hard gaskets are used to ensure flatness, and the spring locating pin group is used to prevent misalignment to achieve low-temperature packaging.
It effectively reduces the bubble rate during the membrane electrode packaging process, ensures the flatness of the membrane electrode, prevents wrinkles and dislocation after packaging, and improves the packaging quality of the membrane electrode.
Smart Images
Figure CN223395732U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen production by AEM water electrolysis, in particular to a tool suitable for preparing membrane electrodes of AEM electrolyzers. Background Art
[0002] As an emerging water electrolysis technology, alkaline anion exchange membrane (AEM) water electrolysis hydrogen production has garnered extensive attention and research in recent years. The membrane electrode (MEA) is the core of the AEM electrolyzer and determines the upper limit of its performance. However, numerous challenges remain during MEA fabrication, such as the anion membrane encapsulation process, which determines the membrane electrode's flatness and cavitation rate.
[0003] Specifically, membrane electrode packaging mainly involves two pieces of packaging films coated with hot melt adhesive or thermosetting adhesive on the surface to encapsulate the anion exchange membrane under a certain temperature and pressure. Conventional positioning tooling cannot avoid bubbles and flatness problems. Since the anion membrane will be destroyed at high temperatures, it can only be packaged at low temperatures. However, low-temperature packaging will involve the problem of bubbles being unable to be discharged due to local temperature unevenness.
[0004] Therefore, designing a packaging tool suitable for membrane electrodes can further solve the above problems. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a tool suitable for the preparation of AEM electrolytic cell membrane electrodes, which can solve the problems of flatness defects and cavitation rate in traditional AEM electrolytic cell membrane electrodes.
[0006] In order to solve the above technical problems, the technical solution of the utility model is: a tool suitable for preparing membrane electrodes of AEM electrolyzers, the innovation of which is that it includes a main body cover plate, a main body bottom plate, a spring positioning pin group and a gasket group;
[0007] The main body cover plate is a rectangular plate structure, and a positioning hole for accommodating a spring positioning pin group is provided at a position near the end corner of the main body cover plate; the main body bottom plate is arranged below the main body cover plate, and a gap is provided between the main body bottom plate and the main body cover plate to form a cavity for encapsulating the membrane electrode; mounting holes for installing a spring positioning pin group are provided at positions corresponding to the positioning holes near the end corners of the main body bottom plate; the spring positioning pin group includes a plurality of spring positioning pin units, and the spring positioning pin units are installed in the mounting holes of the main body bottom plate; the spring positioning pin unit includes a spring and a positioning pin; the spring is arranged in the mounting hole, and the bottom end of the spring is connected to the inner wall of the bottom end of the mounting hole; the positioning pin is arranged in the mounting hole, and the positioning pin is connected to the top end of the spring; the positioning pin cooperates with the positioning hole on the main body cover plate;
[0008] The gasket group includes hard gaskets and soft gaskets; the gasket groups are respectively arranged on the lower surface of the main body cover and the upper surface of the main body base, and the gasket group located on the lower surface of the main body cover is a hard gasket located above the soft gasket, and the hard gasket is installed on the lower surface of the main body cover; the gasket group located on the upper surface of the main body base is a hard gasket located below the soft gasket, and the hard gasket is installed on the upper surface of the main body base.
[0009] Furthermore, the main body cover plate and the main body bottom plate are copper alloy plates, steel plates or aluminum alloy plates.
[0010] Furthermore, the positioning pin is made of wood, PPS, PET, copper alloy, stainless steel or aluminum alloy.
[0011] Furthermore, the soft gasket is made of silicone or fluororubber; the hard gasket is made of PVC, PET, PP, or PPS.
[0012] The advantages of the present invention are:
[0013] 1) In the present invention, during the low-temperature hot pressing process of the membrane electrode, the soft gasket can play a role in pushing away bubbles, which can effectively reduce bubbles in the membrane electrode packaging process, while the hard gasket can ensure the flatness of the membrane electrode during the hot pressing process, and prevent the soft gasket from deforming too much and causing wrinkles after the membrane electrode is packaged; the design of the spring positioning pin group can prevent the gasket, packaging film and AEM membrane from being misaligned during the hot pressing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0015] Figure 1 This is an exploded structural diagram of a tooling suitable for preparing membrane electrodes for AEM electrolyzers according to the present invention.
[0016] Figure 2 This is a comparative schematic diagram of a tooling membrane preparation method suitable for preparing membrane electrodes for AEM electrolyzers according to the present invention. DETAILED DESCRIPTION
[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0019] like Figure 1 Figure 2 The tool shown is suitable for preparing membrane electrodes for AEM electrolyzers, and includes a main body cover plate 1, a main body bottom plate 2, a spring positioning pin group 3 and a gasket group 4.
[0020] The main body cover 1 is a rectangular plate structure, and a positioning hole for accommodating a spring positioning pin group is provided near the end corner of the main body cover 1; the main body base plate 2 is provided below the main body cover 1, and there is a gap between the main body base plate 2 and the main body cover 1 to form a cavity for encapsulating the membrane electrode; the main body base plate 2 is provided with mounting holes for installing a spring positioning pin group 3 corresponding to the positioning holes near the end corner; the spring positioning pin group 3 includes a plurality of spring positioning pin units, and the spring positioning pin units are installed in the mounting holes of the main body base plate; the spring positioning pin unit includes a spring and a positioning pin; the spring is provided in the mounting hole, and the bottom end of the spring is connected to the bottom inner wall of the mounting hole; the positioning pin is provided in the mounting hole, and the positioning pin is connected to the top end of the spring; the positioning pin cooperates with the positioning hole on the main body cover 1.
[0021] The gasket group 4 includes a hard gasket 41 and a soft gasket 42; the gasket group 4 is respectively arranged on the lower surface of the main body cover 1 and the upper surface of the main body bottom 2, and the gasket group located on the lower surface of the main body cover 1 is a hard gasket 41 located above the soft gasket 42, and the hard gasket 41 is installed on the lower surface of the main body cover 1; the gasket group 4 located on the upper surface of the main body bottom 2 is a hard gasket 41 located below the soft gasket 42, and the hard gasket 41 is installed on the upper surface of the main body bottom 2.
[0022] The main body cover plate 1 and the main body bottom plate 2 are copper alloy plates, steel plates or aluminum alloy plates.
[0023] The positioning pins are made of wood, PPS, PET, copper alloy, stainless steel or aluminum alloy.
[0024] The soft gasket 42 is made of silicone or fluororubber; the hard gasket 41 is made of PVC, PET, PP, or PPS.
[0025] The working principle of the present invention is: the packaging film 5 is used to clamp the ion exchange membrane 6. During the low-temperature hot pressing process of the membrane electrode, the soft gasket can play a role in pushing away bubbles, which can effectively reduce the bubbles in the membrane electrode packaging process, while the hard gasket can ensure the flatness of the membrane electrode during the hot pressing process, and prevent the soft gasket from deforming too much and causing wrinkles after the membrane electrode is packaged; the design of the spring positioning pin group can prevent the gasket, packaging film and AEM membrane from being dislocated during the hot pressing process.
[0026] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.
Claims
1. A tool suitable for preparing membrane electrodes for AEM electrolyzers, characterized by: It includes a main body cover plate, a main body bottom plate, a spring positioning pin set and a gasket set; The main body cover plate is a rectangular plate structure, and a positioning hole for accommodating a spring positioning pin group is provided at a position near the end corner of the main body cover plate; the main body bottom plate is arranged below the main body cover plate, and a gap is provided between the main body bottom plate and the main body cover plate to form a cavity for encapsulating the membrane electrode; mounting holes for installing a spring positioning pin group are provided at positions corresponding to the positioning holes near the end corners of the main body bottom plate; the spring positioning pin group includes a plurality of spring positioning pin units, and the spring positioning pin units are installed in the mounting holes of the main body bottom plate; the spring positioning pin unit includes a spring and a positioning pin; the spring is arranged in the mounting hole, and the bottom end of the spring is connected to the inner wall of the bottom end of the mounting hole; the positioning pin is arranged in the mounting hole, and the positioning pin is connected to the top end of the spring; the positioning pin cooperates with the positioning hole on the main body cover plate; The gasket group includes hard gaskets and soft gaskets; the gasket groups are respectively arranged on the lower surface of the main body cover and the upper surface of the main body bottom plate, and the gasket group located on the lower surface of the main body cover is a hard gasket located above the soft gasket, and the hard gasket is installed on the lower surface of the main body cover; The gasket group located on the upper surface of the main body bottom plate is composed of hard gaskets located below the soft gaskets, and the hard gaskets are installed on the upper surface of the main body bottom plate.
2. The tooling for preparing membrane electrodes for AEM electrolyzers according to claim 1, characterized in that: The main body cover plate and the main body bottom plate are made of copper alloy plates, steel plates or aluminum alloy plates.
3. The tooling for preparing membrane electrodes for AEM electrolyzers according to claim 1, characterized in that: The positioning pin is made of wood, PPS, PET, copper alloy, stainless steel or aluminum alloy.
4. The tooling for preparing membrane electrodes for AEM electrolyzers according to claim 1, characterized in that: The soft gasket is made of silicone or fluororubber; the hard gasket is made of PVC, PET, PP, or PPS.