CN213845335U - A sealed location auxiliary structure for sealing positioning seal groove and seal part - Google Patents
A sealed location auxiliary structure for sealing positioning seal groove and seal part Download PDFInfo
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- CN213845335U CN213845335U CN202023041156.4U CN202023041156U CN213845335U CN 213845335 U CN213845335 U CN 213845335U CN 202023041156 U CN202023041156 U CN 202023041156U CN 213845335 U CN213845335 U CN 213845335U
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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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Abstract
The utility model discloses a sealed location auxiliary structure for sealing positioning seal groove and seal part, polar plate department forms the seal groove, is provided with seal part in the seal groove, and the seal groove surface forms the spacing portion of sealing member, and the seal part surface forms the reverse location portion with the spacing portion of above-mentioned sealing member, and seal part's reverse location portion and the spacing portion of sealing member of seal groove mutually support the assembly, provide the benchmark for seal part's mounted position. The sealing element limiting part of the sealing groove prevents the lateral deviation of a sealing part in the assembling process from influencing the sealing effect.
Description
Technical Field
The utility model belongs to the technical field of fuel cell's technique and specifically relates to a sealed location auxiliary structure for sealing positioning seal groove and seal part, in particular to its mechanical connection structure.
Background
The essence of a fuel cell is that hydrogen and oxygen, which are essential reaction raw materials for the fuel cell, electrochemically react to generate electric energy. The two gases enter the fuel cell to carry out precise chemical reaction, and specific reaction areas, reaction amount, reaction product discharge and the like need to be well controlled. In this process, the sealing control of the two gases is important. Therefore, the long-term effectiveness of the sealing member, which serves as an important component of the fuel cell and serves to seal the gas therein, is a prerequisite for ensuring long-term reliable operation of the fuel cell.
The sealing grooves of the existing metal plate generally have two forms, one is a groove structure flush with the recess under the flow field region (as shown in fig. 11), and the other is a protrusion structure similar to the protrusion of the flow field region (as shown in fig. 12), and the corresponding sealing components are mostly structures with rectangular cross sections or similar shapes as shown in fig. 1. This structure is susceptible to lateral misalignment when mated with a seal slot, and this problem has not been solved or even studied. This results in stacking of multiple layers of plates upon stacking, due to the offset of the seal structure (as shown in fig. 2), deformation of the plates upon compression, and uneven application of contact stress on the seal surface, with the part with too low contact stress being an important cause of failure of the fuel cell seal, which seriously affects the reliability of the seal structure. Intuitively, during simulation, the contact stress is unevenly distributed on the contact surface due to the seal misalignment, the seal member is unevenly deformed, and related members such as the electrode plate and the proton membrane frame are all distorted (as shown in fig. 13). This not only causes the aforementioned sealing failure problem, but also may cause the cracking of the electrode plate, the plastic deformation of the proton membrane frame, etc., which seriously affects the safe use of the fuel cell. In view of the above, the current sealing structure is problematic in application, and there is room for improvement in ensuring the sealing reliability, and an auxiliary structure capable of performing sealing positioning is required to perform improvement, so as to improve the robustness of the metal sealing structure of the fuel cell.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a sealed location auxiliary structure for sealing positioning seal groove and seal part. The design method of the polar plate and the sealing component which can carry out sealing positioning is realized by forming a concave or convex structure at the position of the sealing groove and forming a Y-shaped structure or an X-shaped structure on the cross section of the sealing component matched with the sealing groove. To improve fuel cell metal seal structure robustness.
In order to realize the purpose, the technical scheme of the utility model is that: the utility model provides a sealed location auxiliary structure for sealed positioning seal groove and seal part, includes the polar plate, polar plate department forms the seal groove, is provided with seal part in the seal groove, and the seal groove surface forms the spacing portion of sealing member, and the seal part surface forms the reverse position portion with the spacing portion of above-mentioned sealing member, and seal part's reverse position portion and the spacing portion of sealing member of seal groove mutually support the assembly, provide the benchmark for seal part's assembly position.
Preferably, a concave or convex sealing element limiting part is arranged at the sealing groove.
Preferably, the concave sealing element limiting parts are located in the middle of the sealing groove and distributed in a continuous or interval linear manner.
Preferably, the concave sealing element limiting part is located at the central position of the sealing groove and distributed in a continuous or spaced curve shape.
Preferably, the convex sealing element limiting part is located at the middle position of the sealing groove and is distributed in a continuous or interval linear manner.
Preferably, the convex sealing element limiting part is located at the central position of the sealing groove and distributed in a continuous or spaced curve shape.
Preferably, the cross section of the sealing part is approximately Y-shaped, a protruding part matched with the sealing element limiting part is formed on the lower surface of the sealing part, and the protruding part is matched with the sealing element limiting part in a distribution mode.
Preferably, the cross section of the sealing part is approximately X-shaped, the upper surface and the lower surface of the sealing part are both provided with concave parts matched with the sealing part limiting parts, and the concave parts are matched with the sealing part limiting parts in a distribution mode.
The utility model discloses a sealing positioning auxiliary structure for sealing and positioning a sealing groove and a sealing part, which consists of a sealing groove structure capable of positioning and a sealing part matched with the sealing groove structure, wherein the sealing groove structure is used for positioning the sealing part, so that the sealing part can provide a reference for the placement position of the sealing part when being matched with the sealing part, and the positioning precision is ensured; the sealing element limiting part of the sealing groove prevents the lateral deviation of a sealing part in the assembling process from influencing the sealing effect.
Drawings
Fig. 1 is a schematic diagram of the polar plate assembly structure of the present invention.
Fig. 2 is a sectional view of a first embodiment of the sealing member of the present invention.
Fig. 3 is a cross-sectional view of a second embodiment of the sealing member of the present invention.
Fig. 4 is a schematic structural diagram of a first embodiment of the polar plate of the present invention.
Fig. 5 is a schematic structural diagram of a second embodiment of the polar plate of the present invention.
Fig. 6 is a schematic structural view of a first embodiment of the sealing member limiting portion of the present invention.
Fig. 7 is a schematic structural view of a second embodiment of the sealing member limiting portion of the present invention.
Fig. 8 is a schematic structural view of a third embodiment of the sealing member limiting portion of the present invention.
Fig. 9 is a schematic structural view of a fourth embodiment of the sealing member limiting portion of the present invention.
Fig. 10 is a perspective view of a third embodiment of the sealing member stopper according to the present invention.
Fig. 11 is a schematic structural diagram of a first embodiment of the prior art.
Fig. 12 is a schematic structural diagram of a second embodiment of the prior art.
Fig. 13 is a structural schematic diagram of a prior art sealing structure in a misaligned state.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further described with reference to the drawings and the specific embodiments.
The utility model discloses a sealed location auxiliary structure for sealing positioning seal groove and seal part, as shown in fig. 1, it is different from prior art and lies in: including polar plate 1, polar plate 1 department forms seal groove 2, is provided with seal part 3 in the seal groove 2, and 2 surfaces in seal groove form the spacing portion 4 of sealing member, 3 surfaces in seal part form with the spacing portion 4's of above-mentioned sealing member 5 of the reversal location portion, the mutual cooperation assembly of 5 and the spacing portion 4 of sealing member of seal groove 2 of the reversal location portion of seal part 3, provide the benchmark for seal part 3's assembly position.
In specific implementation, as shown in fig. 4 and 5, a concave or convex sealing element limiting part 4 is disposed at the sealing groove 2.
In specific implementation, as shown in fig. 6 and 7, the concave sealing element limiting part 4 is located in the middle of the sealing groove 2 and is distributed in a continuous or interval straight line shape.
In specific implementation, as shown in fig. 8 and 9, the concave sealing element limiting part 4 is located in the middle of the sealing groove 2 and is distributed in a continuous or spaced curve shape.
In specific implementation, as shown in fig. 6 and 7, the convex sealing element limiting part 4 is located in the middle of the sealing groove 2 and is distributed in a continuous or interval straight line shape.
In specific implementation, as shown in fig. 8 and 9, the convex sealing element limiting part 4 is located in the middle of the sealing groove 2 and is distributed in a continuous or spaced curve shape, wherein the flatness is 0.02.
In practical implementation, as shown in fig. 2, the cross section of the sealing part 3 is approximately Y-shaped, the lower surface of the sealing part 3 is formed with a protruding portion 6 which is matched with the sealing element limiting portion 4, and the protruding portion 6 is matched with the distribution mode of the sealing element limiting portion 4.
In specific implementation, as shown in fig. 3, the cross section of the sealing component 3 is approximately X-shaped, the upper surface and the lower surface of the sealing component 3 are both formed with recessed portions 7 which are matched with the sealing element limiting portions 4, and the recessed portions 7 are matched with the distribution mode of the sealing element limiting portions 4, so that the sealing effect is prevented from being influenced by lateral deviation in the assembling process.
In specific implementation, the sealing element limiting part 4 is distributed on the surface of the sealing groove 2 in an arc curve shape.
In specific implementation, as shown in fig. 8 and 10, the sealing element position limiting part 4 is formed by distributing a plurality of straight line segments on the surface of the sealing groove 2 at intervals in a curve.
According to the characteristics of the polar plate sealing structure, the concave or convex part is introduced into the sealing groove and matched with the sealing part with the section of a Y-shaped structure or an X-shaped structure, so that the stability of the whole sealing structure is improved. The concave or convex part in the seal groove can be realized by a stamping process, and the height of the concave or convex part is generally smaller than that of the flow field so as to ensure that the matched sealing element has enough height. The Y-shaped structure or the X-shaped structure of the sealing part is realized through processes of die pressing, pressure injection, injection molding and the like, and the adopted die is manufactured by making a die cavity into a corresponding shape.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a sealed location auxiliary structure for sealed positioning seal groove and seal part which characterized in that: including polar plate (1), polar plate (1) department forms seal groove (2), is provided with seal part (3) in seal groove (2), and seal groove (2) surface forms spacing portion of sealing member (4), and seal part (3) surface forms with the reverse location portion (5) of the spacing portion of above-mentioned sealing member (4), and the reverse location portion (5) of seal part (3) and the spacing portion of sealing member (4) of seal groove (2) mutually support the assembly, provide the benchmark for the assembly position of seal part (3).
2. The seal positioning aid for sealing a seal groove with a seal member of claim 1, wherein: and a concave or convex sealing element limiting part (4) is arranged at the position of the sealing groove (2).
3. The seal positioning aid for sealing the seal groove with the seal member of claim 2, wherein: the sunken sealing element limiting part (4) is located in the middle of the sealing groove (2) and is distributed continuously or linearly at intervals.
4. The seal positioning aid for sealing the seal groove with the seal member of claim 2, wherein: the sunken sealing element limiting part (4) is located in the middle of the sealing groove (2) and is distributed in a continuous or spaced curve shape.
5. The seal positioning aid for sealing the seal groove with the seal member of claim 2, wherein: the convex sealing element limiting part (4) is located in the middle of the sealing groove (2) and is distributed continuously or linearly at intervals.
6. The seal positioning aid for sealing the seal groove with the seal member of claim 2, wherein: the convex sealing element limiting part (4) is located in the middle of the sealing groove (2) and is distributed in a continuous or interval curve shape.
7. The seal positioning aid for sealing a seal groove with a seal member of claim 1, wherein: the cross section of the sealing part (3) is approximately Y-shaped, a protruding part (6) matched with the sealing part limiting part (4) is formed on the lower surface of the sealing part (3), and the protruding part (6) is matched with the sealing part limiting part (4) in a distribution mode.
8. The seal positioning aid for sealing a seal groove with a seal member of claim 1, wherein: the cross section of the sealing component (3) is approximately X-shaped, the upper surface and the lower surface of the sealing component (3) are both provided with a concave part (7) matched with the sealing element limiting part (4), and the concave parts (7) are matched with the sealing element limiting part (4) in a distribution mode.
9. The seal positioning aid for sealing a seal groove with a seal member of claim 1, wherein: the sealing element limiting parts (4) are distributed on the surface of the sealing groove (2) in an arc curve shape.
10. The seal positioning aid for sealing a seal groove with a seal member of claim 1, wherein: the sealing element limiting part (4) is formed by distributing a plurality of straight line segments on the surface of the sealing groove (2) at intervals in a curve manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023041156.4U CN213845335U (en) | 2020-12-16 | 2020-12-16 | A sealed location auxiliary structure for sealing positioning seal groove and seal part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023041156.4U CN213845335U (en) | 2020-12-16 | 2020-12-16 | A sealed location auxiliary structure for sealing positioning seal groove and seal part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213845335U true CN213845335U (en) | 2021-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023041156.4U Active CN213845335U (en) | 2020-12-16 | 2020-12-16 | A sealed location auxiliary structure for sealing positioning seal groove and seal part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213845335U (en) |
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2020
- 2020-12-16 CN CN202023041156.4U patent/CN213845335U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 201306 factory building 1, No. 1500, cenglin Road, Lingang New District, pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Shanghai Zhizhen new energy Co.,Ltd. Address before: 201306 factory building 1, no.1500, cenglin Road, Nicheng Town, Pudong New Area, Shanghai Patentee before: SHANGHAI ZHIZHEN NEW ENERGY EQUIPMENT CO.,LTD. |
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| CP03 | Change of name, title or address | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A sealing and positioning auxiliary structure for sealing and positioning sealing grooves and sealing parts Effective date of registration: 20220719 Granted publication date: 20210730 Pledgee: China Merchants Bank Co.,Ltd. Shanghai Branch Pledgor: Shanghai Zhizhen new energy Co.,Ltd. Registration number: Y2022310000131 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |