Fuel cell

Abstract

The utility model provides a fuel cell, a sealing structure is arranged between a first component and a second component with a sealing groove in the fuel cell, the sealing structure is arranged between the first component and the second component with the sealing groove, and the sealing structure comprises a structure main body which can be arranged in the sealing groove; the limiting protrusions are arranged on at least one side of the structure body in the width direction, the limiting protrusions can abut against the groove wall of the sealing groove so as to limit displacement of the structure body in the sealing groove, and the two ends of the structure body in the height direction can abut against the first component and the second component respectively so as to seal a gap between the first component and the second component; the first component is a distribution head on a fuel cell, and the second component is an electric pile front end plate. The installation effect of the sealing structure in the sealing groove is improved, the problems that the structure body topples and inclines in the sealing groove are solved, and then the sealing effect of the sealing structure on the gap between the first component and the second component is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a sealing structure; at the same time, the utility model also relates to a fuel cell provided with the sealing structure. Background Art

[0002] Sealing structures are key components widely used in mechanical equipment. Their primary function is to provide a seal within the machine, preventing fluid or gas leakage from interfaces. The operating principles of sealing structures are generally categorized into two types: static and dynamic. Static seals are seals installed on stationary parts of a machine to prevent fluid or gas leakage. Dynamic seals are installed on moving parts of a machine to prevent leakage between moving and stationary parts. The selection and application of sealing structures depends on factors such as environmental conditions, operating pressure, temperature, and fluid.

[0003] When a traditional sealing structure is placed between two components, a sealing groove is typically formed on one of the components for mounting the sealing structure. As the two components approach each other, the sealing structure is squeezed and elastically deformed, filling the sealing groove to ensure a tight connection between the two components. However, this sealing structure is not designed properly, resulting in poor installation of the sealing structure within the sealing groove, which in turn affects the sealing performance between the two components. Utility Model Content

[0004] In view of this, the present invention aims to provide a sealing structure to improve its sealing performance.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A sealing structure is provided between a first component and a second component having a sealing groove, the sealing structure comprising a structural body capable of being disposed in the sealing groove, and a limiting protrusion provided on at least one side of the structural body in a width direction; the limiting protrusion is capable of abutting against a groove wall of the sealing groove to limit the displacement of the structural body in the sealing groove, and both ends of the structural body in a height direction are capable of abutting against the first component and the second component respectively to seal the gap between the first component and the second component.

[0007] Furthermore, the limiting protrusions are provided on two opposite sides in the width direction of the structural body, and the limiting protrusions on each side can abut against the groove wall of the sealing groove on the corresponding side; the limiting protrusions on both sides are staggered in the length direction of the structural body.

[0008] Furthermore, along the protruding direction of the limiting protrusion, the width of the limiting protrusion gradually decreases.

[0009] Furthermore, in the length direction of the structural body, there is a distance L between two adjacent limiting protrusions, and the distance L is between 30 mm and 50 mm.

[0010] Furthermore, an outwardly protruding sealing protrusion is provided at one end of the structural body that abuts against the first component and / or the second component, and the structural body abuts against the first component or the second component through the sealing protrusion.

[0011] Furthermore, there are at least two sealing protrusions spaced apart along the width direction of the structural body; and a groove for deformation of the structural body is formed between two adjacent sealing protrusions.

[0012] Furthermore, the height of the structural body is greater than its width; and / or the limiting protrusion is in the shape of an elongated strip extending along the height direction of the structural body.

[0013] Furthermore, the end of the sealing protrusion is in an arc shape with a smooth transition.

[0014] Furthermore, the sealing structure is made of EPDM rubber, fluorosilicone rubber or fluororubber.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The sealing structure described in the present invention is configured with a limiting protrusion on at least one side in the width direction of the structural body, and the limiting protrusion can limit the displacement of the structural body in the sealing groove, thereby improving the installation effect of the sealing structure in the sealing groove and preventing the structural body from tipping over, tilting, and other problems when installed in the sealing groove, thereby ensuring the sealing effect of the sealing structure on the gap between the first component and the second component.

[0017] Furthermore, by providing limiting protrusions on both sides of the structural body and staggering the limiting protrusions along the length of the structural body, the structural body is prevented from tilting or skewing within the sealing groove, thereby preventing poor positioning and compressing the structural body, which could affect sealing performance. The width of the limiting protrusions gradually decreases along the protruding direction of the limiting protrusions, facilitating better compression and deformation of the structural body when squeezed by the first and second components, thereby improving the filling efficiency of the structural body within the sealing groove. The spacing between adjacent limiting protrusions ensures that the limiting protrusions are positioned effectively within the sealing groove. When the spacing L is greater than 50 mm, the number of limiting protrusions is reduced, resulting in poor positioning of the sealing structure within the sealing groove and making the structural body more susceptible to tilting or skewing. When the spacing L is less than 30 mm, the number of limiting protrusions increases. While this improves the positioning efficiency of the sealing structure, it also reduces the elastic compressibility and filling rate of the structural body, thereby affecting the sealing performance of the sealing structure.

[0018] Furthermore, the provision of sealing protrusions on the structural body facilitates improved sealing performance of the sealing structure, and the sealing protrusions have a simple structure and are easily processed and formed. Providing at least two sealing protrusions spaced apart along the width of the structural body facilitates multi-layer sealing, thereby improving the sealing performance of the sealing structure. Forming a groove between two adjacent sealing protrusions facilitates compression deformation of the structural body. Making the height of the structural body greater than its width further enhances the elastic compression effect of the structural body. Providing the limiting protrusions in an elongated strip shape not only facilitates structural formation of the limiting protrusions, but also aligns the extending direction of the limiting protrusions with the installation direction of the sealing structure within the sealing groove, thereby facilitating installation of the sealing structure within the sealing groove.

[0019] Furthermore, the end of the sealing protrusion is a smoothly rounded arc, which helps improve the contact uniformity between the sealing protrusion and the corresponding component, thereby improving the sealing performance of the sealing structure. Sealing structures made of EPDM rubber, fluorosilicone rubber, or fluororubber all have good elastic deformation and durability, which helps improve the performance of the sealing structure.

[0020] In addition, another object of the present invention is to provide a fuel cell, wherein the fuel cell is provided with the sealing structure as described above, the first component is a distribution head on the fuel cell, and the second component is a front end plate of the fuel cell stack.

[0021] The fuel cell of the present invention is provided with the above sealing structure, which is beneficial to improving the sealing performance of the fuel cell, thereby improving the performance of the fuel cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of the sealing structure and the second component in an assembled state according to an embodiment of the present utility model;

[0024] Figure 2 This is a structural schematic diagram of a partial sealing structure according to an embodiment of the present utility model at one viewing angle;

[0025] Figure 3 This is a structural schematic diagram of a partial sealing structure according to an embodiment of the present utility model from another perspective;

[0026] Figure 4 for Figure 3 Front view in

[0027] Figure 5 for Figure 3 Top view in .

[0028] Description of reference numerals:

[0029] 1. Main structure; 2. Secondary component;

[0030] 101. Limiting protrusion; 102. Sealing protrusion; 103. Groove;

[0031] 200. Sealing groove. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0033] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "back" appear, they are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0035] This embodiment relates to a sealing structure, which is arranged between a first component and a second component 2 having a sealing groove 200. The sealing structure optimizes its own structure to solve the problem in the prior art that the sealing structure is prone to tipping or tilting in the sealing groove 200, thereby affecting poor sealing performance.

[0036] Overall, the sealing structure comprises a structural body 1 that can be positioned within a sealing groove 200, and a limiting protrusion 101 provided on at least one side of the structural body 1 in the width direction. The limiting protrusion 101 can abut against the groove wall of the sealing groove 200 to limit the displacement of the structural body 1 within the sealing groove 200. The ends of the structural body 1 in the height direction can abut against the first and second components 2, respectively, to seal the gap between the first and second components 2.

[0037] The sealing structure described in this embodiment is provided with a limiting protrusion 101 on at least one side in the width direction of the structural body 1. The limiting protrusion 101 can limit the displacement of the structural body 1 in the sealing groove 200, thereby improving the installation effect of the sealing structure in the sealing groove 200 and preventing the structural body 1 from tipping over or tilting in the sealing groove 200, thereby ensuring the sealing effect of the sealing structure on the gap between the first component and the second component 2.

[0038] Based on the above overall introduction, the structure of the sealing structure in this embodiment in the use state is as follows Figure 1 As shown in the figure, the sealing structure is as follows Figures 2 to 5 As shown in . The limiting protrusions 101 mounted on the second member 2 are located within the sealing groove 200, and the top of the structural body 1 extends out of the sealing groove 200. As a preferred embodiment, limiting protrusions 101 are provided on opposite sides of the structural body 1 in the width direction. Each limiting protrusion 101 is capable of abutting the groove wall of the corresponding sealing groove 200. The limiting protrusions 101 on both sides are staggered along the length direction of the structural body 1.

[0039] Combine Figure 2 、 Figure 3 and Figure 5 As shown in the figure, the staggered arrangement of the two limiting protrusions 101 along the length of the structural body 1, based on the viewing angle shown in the figure, specifically means that the projections of the two limiting protrusions 101 along the width direction of the structural body 1 do not overlap. Along the length of the structural body 1, the right limiting protrusion 101 is located between the two left limiting protrusions 101, and the three adjacent limiting protrusions 101 are arranged in a triangle. This arrangement utilizes the greater stability of the triangle to improve the installation and positioning of the structural body 1 in the sealing groove 200.

[0040] In this embodiment, by providing limiting protrusions 101 on both sides of the structural body 1, not only does this prevent the structural body 1 from tipping over, tilting, or other poor positioning issues within the sealing groove 200 that could affect sealing performance, it also reduces the contact area between the structural body 1 and the groove wall of the sealing groove 200, thereby facilitating compression deformation of the structural body 1. Furthermore, staggering the limiting protrusions 101 on both sides along the length of the structural body 1 further increases the compression rate of the structural body 1 and the filling rate of the structural body 1 within the sealing groove 200.

[0041] It should be noted that the number of limiting protrusions 101 on each side of the structural body 1 in this embodiment can be determined based on the actual use requirements. Furthermore, the cross-sectional structures of the sealing groove 200 and the sealing structure should match, and the shapes of the sealing groove 200 and the sealing structure should also be adapted. For example, if the sealing groove 200 is circular, the structural body 1 should also be circular. Of course, the sealing groove 200 can also be square, rectangular, or oblong, and the structural body 1 should be configured to conform to the shape of the sealing groove 200 to achieve a better sealing effect.

[0042] As a preferred embodiment, Figure 5As shown in , the width of the limiting protrusion 101 gradually decreases along the protruding direction of the limiting protrusion 101. Such a configuration is conducive to better compression deformation of the structural body 1 when it is squeezed by the first component and the second component 2, thereby helping to improve the filling effect of the structural body 1 in the sealing groove 200. Specifically, when the first component and the second component 2 squeeze the structural body 1 along the height direction of the structural body 1, as the structural body 1 is elastically compressed, the contact area between the limiting protrusion 101 and the groove wall gradually increases, thereby helping to improve the compression rate of the sealing structure and the filling rate in the sealing groove 200. In addition, the end face of the limiting protrusion 101 is a circular arc surface with a smooth transition, which helps to further improve the positioning effect of the limiting protrusion 101 in the sealing groove 200.

[0043] like Figures 2 to 4 As shown in , in this embodiment, the height of the structural body 1 is greater than its width, which further enhances the elastic compression effect of the structural body 1. Furthermore, as a preferred embodiment, the limiting protrusion 101 is in the form of an elongated strip extending along the height direction of the structural body 1. This not only facilitates the structural formation of the limiting protrusion 101, but also aligns the extending direction of the limiting protrusion 101 with the installation direction of the sealing structure within the sealing groove 200, thereby facilitating installation of the sealing structure within the sealing groove 200.

[0044] like Figure 5 As shown in FIG, a spacing L is defined between two adjacent limiting protrusions 101 along the length of the structural body 1. The spacing L is between 30 mm and 50 mm. This spacing L helps ensure that the limiting protrusions 101 are positioned within the sealing groove 200. In specific implementations, the spacing L can be, for example, 30 mm, 35 mm, 40 mm, 45 mm, 48 mm, or 50 mm.

[0045] Furthermore, when the interval L is greater than 50 mm, the number of the limiting protrusions 101 is reduced, resulting in poor positioning of the sealing structure within the sealing groove 200 and a tendency for the structural body 1 to tip or tilt. When the interval L is less than 30 mm, the number of the limiting protrusions 101 is increased. While this improves the positioning of the sealing structure, it reduces the elastic compressibility and filling rate of the structural body 1, thereby affecting the sealing performance of the sealing structure.

[0046] In order to further improve the sealing performance of the sealing structure, such as Figure 1 and Figure 2As shown in FIG, the end of the structural body 1 that abuts the first and second components 2 is provided with an outwardly protruding sealing protrusion 102. The structural body 1 abuts the first and second components 2 via the sealing protrusion 102. The provision of the sealing protrusion 102 here improves the sealing performance of the sealing structure. The sealing protrusion 102 also has a simple structure and is easy to process and form. It should be noted that in this embodiment, the provision of the sealing protrusion 102 only on the top or bottom of the structural body 1 is also feasible.

[0047] As a preferred embodiment, Figure 2 As shown in FIG, at least two sealing protrusions 102 are spaced apart along the width of the structural body 1, with a groove 103 formed between adjacent sealing protrusions 102 for deformation of the structural body 1. The multiple sealing protrusions 102 form a multi-layer seal, extending the service life of the sealing structure and preventing leakage caused by an improper sealing structure, thereby improving the reliability of the sealing structure.

[0048] Specifically, two sealing protrusions 102 are provided on both the top and bottom of the structural body 1, thereby forming a double-layer seal at both the top and bottom of the structural body 1. Of course, the number of sealing protrusions 102 on the top and bottom of the structural body 1 can be adaptively increased according to usage requirements. Furthermore, the number of upper limit protrusions 101 on the top and bottom of the structural body 1 can be set to be the same or different as needed.

[0049] like Figure 5 As shown in FIG, the end of the sealing protrusion 102 is a smoothly rounded arc, which helps improve the contact uniformity between the sealing protrusion 102 and the corresponding component, thereby improving the sealing performance of the sealing structure. When the structural body 1 is squeezed by the first and second components 2, the sealing protrusion 102 can be compressed and deformed first, thereby improving the compression and filling effect of the sealing structure.

[0050] The sealing structure in this embodiment is made of EPDM rubber, fluorosilicone rubber, or fluororubber. Sealing structures made of these three materials all exhibit excellent elastic deformation and durability, thereby improving the performance of the sealing structure. In practice, the material of the sealing structure can be selected based on the temperature and medium of the operating environment, as long as it meets the requirements.

[0051] In this embodiment, the compression rate of the sealing structure can be 22% to 28%, and the application scenario is static sealing. The filling rate of the sealing structure can be 85% to 89% (excluding the limiting protrusion 101). In special cases, the filling rate of the sealing structure can be increased to 95% to 98% according to the application requirements.

[0052] like Figure 1As shown in , when the sealing structure in this embodiment is in use, the sealing structure is positioned and installed in the sealing groove 200 by cooperating with the limiting protrusion 101. When the first component and the second component 2 are connected and close to each other, the sealing protrusion 102 and the structural body 1 can be squeezed, so that the structural body 1 can be elastically compressed and increase its filling rate in the sealing groove 200, thereby improving the sealing effect of the gap between the first component and the second component 2.

[0053] The sealing structure in this embodiment has a simple structure and is easy to arrange and implement. The cooperation between the limiting protrusion 101 and the sealing protrusion 102 is not only beneficial to the positioning and installation effect of the sealing structure in the sealing groove 200, but also beneficial to improving the sealing performance and reliability of the sealing structure.

[0054] In addition, this embodiment also relates to a fuel cell, in which the sealing structure described above is provided.

[0055] For example, the first component may be a distribution head on a fuel cell, and the second component 2 may be a front end plate of a fuel cell stack. The sealing structure is annular, which helps to improve the sealing effect between the distribution head and the front end plate of the fuel cell stack, thereby improving the performance of the fuel cell.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fuel cell, characterized in that: A sealing structure is provided between the first component in the fuel cell and the second component having the sealing groove (200); The sealing structure comprises a structural body (1) capable of being arranged in the sealing groove (200), and limiting protrusions (101) arranged on two opposite sides of the structural body (1) in a width direction; The limiting protrusions (101) on each side can abut against the groove wall of the sealing groove (200) on the corresponding side to limit the displacement of the structural body (1) in the sealing groove (200), and the two ends of the structural body (1) in the height direction can respectively abut against the first component and the second component (2) to seal the gap between the first component and the second component (2); The limiting protrusions (101) on both sides are staggered in the length direction of the structural main body (1), and the width of the limiting protrusions (101) gradually decreases along the protruding direction of the limiting protrusions (101), and there is a spacing L between two adjacent limiting protrusions (101) in the length direction of the structural main body (1), and the spacing L is between 30 mm and 50 mm; The first component is a distribution head on the fuel cell, and the second component (2) is a front end plate of the fuel cell stack.

2. The fuel cell according to claim 1, wherein: An end of the structural body (1) that abuts against the first component and / or the second component (2) is provided with an outwardly protruding sealing protrusion (102), and the structural body (1) abuts against the first component or the second component (2) through the sealing protrusion (102).

3. The fuel cell according to claim 2, wherein: The sealing protrusions (102) are at least two spaced apart along the width direction of the structural body (1); A groove (103) for the structural body (1) to deform is formed between two adjacent sealing protrusions (102).

4. The fuel cell according to claim 2, wherein: The height of the structural body (1) is greater than its width; and / or the limiting protrusion (101) is in the shape of a long strip extending in the height direction of the structural body (1).

5. The fuel cell according to claim 2, wherein: The end of the sealing protrusion (102) is in a smoothly transitioned arc shape.

6. The fuel cell according to claim 2, wherein: The sealing structure is made of EPDM rubber, fluorosilicone rubber or fluororubber.

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