CN112490466A - Novel multi-peak fuel cell sealing structure - Google Patents
Novel multi-peak fuel cell sealing structure Download PDFInfo
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- CN112490466A CN112490466A CN202011450665.4A CN202011450665A CN112490466A CN 112490466 A CN112490466 A CN 112490466A CN 202011450665 A CN202011450665 A CN 202011450665A CN 112490466 A CN112490466 A CN 112490466A
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- sealing
- fuel cell
- multimodal
- sealing structure
- sealing ring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
- H01M8/0278—O-rings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention provides a novel multi-peak fuel cell sealing structure. The cathode sealing ring and the anode sealing ring are combined by a rectangular sealing structure and a multi-peak sealing structure, and the multi-peak sealing structure comprises two or more peak structures. The invention has the beneficial effects that: the problems that the compression stress of a sealing material is overlarge and the sealing contact pressure is too small in the use process of the fuel cell are solved, and the aims of improving the sealing performance of the fuel cell and prolonging the service life of the sealing material are fulfilled.
Description
Technical Field
The invention relates to a fuel cell sealing structure, in particular to a novel multi-peak fuel cell sealing structure.
Background
The rectangular sealing ring and the O-shaped sealing ring are used in a large scale in the sealing field. The rectangular sealing ring has good section stability, is not easy to distort after installation, and still has larger contact width even under the condition of dislocation because the width of the rectangular sealing ring is large. However, under the condition that the same sealing contact pressure is required to be obtained, the internal stress is excessive due to the large compressive strain of the rectangular sealing ring, and the failure of the sealing structure is easily caused.
The traditional O-shaped sealing ring has self-sealing property and good sealing performance. However, since the fuel cell has a unique double-layer sealing structure, misalignment of the sealing structure is easily caused in consideration of assembly errors, which causes structural instability and an excessively low sealing contact pressure, and it is difficult to ensure the sealing performance of the fuel cell.
Disclosure of Invention
In order to solve the technical problem, the invention discloses a novel multi-peak fuel cell sealing structure, and the technical scheme of the invention is implemented as follows:
a novel multi-peak fuel cell sealing structure comprises an anode sealing ring and a cathode sealing ring; the anode sealing ring and the cathode sealing ring are combined by a multimodal sealing structure and a rectangular sealing structure.
Preferably, one side of the anode sealing ring is of a multimodal sealing structure, and the other side of the anode sealing ring is of a rectangular sealing structure.
Preferably, one side of the cathode sealing ring is a multimodal sealing structure, and the other side of the cathode sealing ring is a rectangular sealing structure.
Preferably, the multimodal sealing structure comprises two or more multimodal structures.
Preferably, the shape of the multimodal sealing structure comprises an O-type or a hetero-structure.
Preferably, the centre of the multimodal sealing structure is located inside the rectangular sealing structure.
The technical scheme of the invention can solve the technical problems that the compression stress of the sealing material is overlarge and the sealing contact pressure is too small in the use process of the fuel cell in the prior art; by implementing the technical scheme of the invention, the technical effect of improving the sealing performance of the fuel cell can be realized by adopting the multimodal structure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
FIG. 1 is a schematic view of a multimodal fuel cell sealing structure;
fig. 2 is a schematic diagram of a profiled multimodal fuel cell sealing structure.
In the above drawings, the reference numerals denote:
1 anode sealing ring
2 cathode sealing ring
3 anode plate
4 negative plate
5 film electrode
6 membrane electrode frame
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
In a specific embodiment, as shown in fig. 1, a novel multi-peak fuel cell sealing structure comprises an anode sealing ring 1 and a cathode sealing ring 2; the anode sealing ring 1 and the cathode sealing ring 2 both adopt a combination form of a multimodal sealing structure and a rectangular sealing structure.
In the embodiment, an anode plate 3, a cathode plate 4, a membrane electrode 5 and a membrane electrode frame 6 are included in a complete fuel cell structure, an anode sealing ring 1 is arranged between the anode plate 3 and the membrane electrode frame 6, and a cathode sealing ring 2 is arranged between the cathode plate 4 and the membrane electrode frame 6. The anode sealing ring 1 and the cathode sealing ring 2 are arranged among the cathode plate 4, the anode plate 3 and the membrane electrode frame 6, so that the good sealing performance of the membrane electrode 5 can be ensured, the anode plate 3 and the cathode plate 4 are prevented from being corroded by water, acid and other liquids generated in the working process of the fuel cell, and the service life of the fuel cell is shortened. The anode sealing ring 1 is in a combined form of a rectangular sealing structure and a multimodal sealing structure, and the cathode sealing ring 2 is in a combined form of a multimodal sealing structure and a rectangular sealing structure. The rectangular sealing structure has good stability, but the rectangular sealing structure can cause the internal stress of the sealing structure to be overlarge, so that the sealing structure fails. Multimodal structures have good sealing properties but are prone to misalignment during installation. The anode sealing ring 1 is in a combined form of a rectangular sealing structure and a multimodal structure, the anode sealing ring 1 has enough stability, and the sealing cathode sealing ring 2 with the multimodal structure is in a combined form of the multimodal sealing structure and the rectangular sealing structure, so that the membrane electrode frame 6 is not subjected to large internal stress, and the service life of the fuel cell is further influenced. The installation is simpler and easier, the dislocation is not easy to occur in the middle of the installation process, the installation cost is saved, the sealing performance of the fuel cell is ensured, and the long service life and the durability of the fuel cell are also ensured.
In a preferred embodiment, the anode sealing ring 1 has a multimodal sealing structure on one side and a rectangular sealing structure on the other side.
In the present embodiment, the side of the anode sealing ring 1 in contact with the anode plate 3 is a rectangular sealing structure, and the side of the anode sealing ring 1 in contact with the membrane electrode frame 6 is a multimodal sealing structure. Adopt rectangle seal structure between anode seal 1 and the anode plate 3 to guarantee that the cross section has good stability, adopt multimodal seal structure between anode seal 1 and the membrane electrode frame 6, guaranteed that the difficult dislocation that takes place of one side installation of anode seal 1, even take place the dislocation opposite side and remain the plane contact throughout, the contact pressure of the inside of anode seal 1 can not be too big simultaneously and lead to the positive pole seal 1 seal structure to become invalid, contact pressure also can not cross lowly and make sealing performance relatively poor. The contact pressure of the anode sealing ring 1 can be always in a stable state, so that the fuel cell has good sealing performance and cannot generate huge contact pressure, and the fuel cell is ensured to have good performance and long service life.
In a preferred embodiment, the cathode sealing ring 2 has a multimodal sealing structure on one side and a rectangular sealing structure on the other side.
In the present embodiment, the side of the cathode sealing ring 2 in contact with the cathode plate 4 is a rectangular sealing structure, and the side of the cathode sealing ring 2 in contact with the membrane electrode frame 6 is a multimodal sealing structure. Adopt rectangle seal structure between negative pole sealing washer 2 and negative plate 4 and can guarantee to have good stability on the cross section, adopt multimodal seal structure between negative pole sealing washer 2 and the membrane electrode frame 6, it is difficult for taking place to misplace to have guaranteed the installation of one side of negative pole sealing washer 2, the opposite side also keeps the plane contact all the time even take place to misplace, just so guaranteed the stability of negative pole sealing washer 2, the inside contact pressure of negative pole sealing washer 2 can not be too big and lead to the seal structure of negative pole sealing washer 2 to become invalid, negative pole sealing washer 2 contact pressure can not cross lowly and make fuel cell's sealing performance relatively poor yet. The contact pressure of the cathode sealing ring 2 is maintained in a stable state, so that the fuel cell has good sealing performance, and meanwhile, huge contact pressure is not generated, and the fuel cell is ensured to have good service life. Both sides of the membrane electrode frame 6 are of a multi-peak sealing structure, so that the self-sealing property of the peak structure is fully utilized, and the multi-peak structure can achieve the multi-sealing effect. The rectangular sealing structure is adopted on one side of the anode sealing ring 1 in contact with the anode plate 3 and one side of the cathode sealing ring 2 in contact with the cathode plate 4, the stability of the rectangular sealing structure is fully utilized, the sealing performance effect of the sealing structure of the whole fuel cell is high-efficient and stable, and meanwhile, the situation that the sealing performance of the fuel cell is influenced due to the fact that the multimodal sealing structure can be dislocated in installation is avoided.
In a preferred embodiment, the multimodal seal structure comprises two or more multimodal structures.
In this embodiment, the multi-peak sealing structure is a two-peak, three-peak or multi-peak structure, and if a single peak is adopted, shearing force is generated on the membrane electrode frame 6, and the shearing stress on the two sides of the membrane electrode frame 6 damages the structure of the membrane electrode frame 6, which affects the service life of the fuel cell. Two or more than two peaks can be adopted to achieve double or multiple sealing effects, and the design of multiple peaks can also avoid size deviation and assembly deviation, so that two, three or multiple peaks can be selected in a multi-peak structure.
In a preferred embodiment, the shape of the multimodal seal comprises an O-type or profiled structure.
In the embodiment, the multimodal sealing structure can adopt an O-shaped structure or a special-shaped structure, and the O-shaped structure has good self-sealing performance. Under the condition that the overall compression rate is low, the compression of the local O-shaped structure ensures high contact pressure, and the sealing performance of the sealing structure is ensured. Besides the traditional O-shaped structure, the multimodal sealing structure can also adopt a special-shaped structure, and the shape does not have a substantial influence on the sealing performance of the multimodal structure, so that the multimodal shape can be adjusted and designed arbitrarily.
In a preferred embodiment, the centre of the multimodal sealing structure is located inside the rectangular sealing structure.
In the present embodiment, when the multimodal sealing structure has an O-shape or the like, the center of the O-shape is located inside the anode gasket 1 and the cathode gasket 2. The center of a circle of the multi-peak structure of the anode sealing ring 1 is positioned inside the anode sealing ring 1 and the cathode sealing ring 2, so that the stability of the peak structure can be enhanced, the whole structure of the whole anode sealing ring 1 and the whole cathode sealing ring 2 is stable, and the sealing performance is good. When the arc-shaped special-shaped structure is adopted, the circle center of the special-shaped structure is ensured to be positioned in the rectangular sealing structure, and the peak-shaped structure is ensured to have good stability and sealing property.
It should be understood that the above-described embodiments are merely exemplary of the present invention, and are not intended to limit the present invention, and that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (6)
1. A novel multi-peak fuel cell sealing structure is characterized in that: comprises an anode sealing ring and a cathode sealing ring; the anode sealing ring and the cathode sealing ring are both in a combination form of a multimodal sealing structure and a rectangular sealing structure.
2. A novel multimodal fuel cell sealing structure as claimed in claim 1 wherein: one side of the anode sealing ring is of a multi-peak sealing structure, and the other side of the anode sealing ring is of a rectangular sealing structure.
3. A novel multi-modal fuel cell sealing structure as defined in claim 2, wherein: one side of the cathode sealing ring is of a multi-peak sealing structure, and the other side of the cathode sealing ring is of a rectangular sealing structure.
4. A novel seal structure for a multimodal fuel cell as defined in claim 3, wherein: the multimodal seal structure includes two or more multimodal structures.
5. A novel seal structure for a multimodal fuel cell as defined in claim 4, wherein: the shape of the multimodal seal structure includes an O-type or hetero-structure.
6. A novel seal structure for a multimodal fuel cell as defined in claim 5, wherein: the center of the multimodal sealing structure is positioned in the rectangular sealing structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011450665.4A CN112490466A (en) | 2020-12-10 | 2020-12-10 | Novel multi-peak fuel cell sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011450665.4A CN112490466A (en) | 2020-12-10 | 2020-12-10 | Novel multi-peak fuel cell sealing structure |
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| Publication Number | Publication Date |
|---|---|
| CN112490466A true CN112490466A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011450665.4A Pending CN112490466A (en) | 2020-12-10 | 2020-12-10 | Novel multi-peak fuel cell sealing structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314728A (en) * | 2021-07-30 | 2021-08-27 | 爱德曼氢能源装备有限公司 | Sealing structure of long-life membrane electrode of fuel cell |
| CN116525872A (en) * | 2023-06-30 | 2023-08-01 | 苏州氢澜科技有限公司 | Low-leakage integrated single fuel cell sealing structure |
-
2020
- 2020-12-10 CN CN202011450665.4A patent/CN112490466A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113314728A (en) * | 2021-07-30 | 2021-08-27 | 爱德曼氢能源装备有限公司 | Sealing structure of long-life membrane electrode of fuel cell |
| CN116525872A (en) * | 2023-06-30 | 2023-08-01 | 苏州氢澜科技有限公司 | Low-leakage integrated single fuel cell sealing structure |
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