CN217035684U - Fuel cell bipolar plate sealing strip side laying positioning structure - Google Patents
Fuel cell bipolar plate sealing strip side laying positioning structure Download PDFInfo
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- CN217035684U CN217035684U CN202220106203.9U CN202220106203U CN217035684U CN 217035684 U CN217035684 U CN 217035684U CN 202220106203 U CN202220106203 U CN 202220106203U CN 217035684 U CN217035684 U CN 217035684U
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Abstract
A fuel cell bipolar plate sealing strip side pavement positioning structure comprises an anode plate, a cathode plate and a sealing strip, wherein the anode plate and the cathode plate are oppositely arranged, and the sealing strip is arranged between the anode plate and the cathode plate; the opposite sides of the anode plate and the cathode plate are provided with sealing grooves, and sealing strips are arranged in the sealing grooves; one of the side wall of the sealing groove and the side wall of the sealing strip is provided with a limiting bulge, and the other of the side wall of the sealing groove and the side wall of the sealing strip is provided with a limiting groove corresponding to the limiting bulge; the limiting bulge and the limiting groove are continuously arranged along the side walls of the sealing strip and the sealing groove; or the limiting bulges and the limiting grooves are arranged in a plurality of numbers and are arranged at intervals along the side walls of the sealing strip and the sealing groove. Due to the design of the limiting protrusions and the limiting grooves, the contact area between the sealing strip and the sealing groove is increased, the connection strength between the sealing strip and the sealing groove can be improved, and the connection structure between the sealing strip and the sealing groove is more stable and reliable.
Description
Technical Field
The utility model belongs to the technical field of fuel cells, and particularly relates to a fuel cell bipolar plate sealing strip side laying and positioning structure.
Background
The fuel cell is a high-efficiency and zero-pollution power device, has high commercial value in the application of new energy fields, and the fuel cell technology also plays an important role in the whole hydrogen energy market. The fuel cell widely used in the transportation field is a proton exchange membrane fuel cell, and the advantages of small volume, light weight, good performance and the like enable more and more enterprises and research units to participate in the research and development of the fuel cell. The key components of the fuel cell are the bipolar plate and the MEA, and the bipolar plate needs to ensure good air tightness during use, so the sealing problem of the bipolar plate also needs to be considered in the design process.
At present, the mainstream sealing mode of the metal bipolar plate of the fuel cell is to glue a sealing rubber strip on the surface of the polar plate so as to meet the required sealing requirement, but because no positioning and limiting structure exists between the sealing rubber strip and the polar plate, the sealing rubber strip can be subjected to installation deviation and dislocation, and the polar plate is caused to lose sealing efficacy. In addition, because the bipolar plate can bear the press-fitting force in the stacking process, the adhesive tape has certain adhesive force, the sealing adhesive tape on the bipolar plate can be torn off in the stack disassembling process, the sealing performance of the bipolar plate is difficult to ensure, and the reuse rate of the bipolar plate is reduced.
It will thus be seen that numerous drawbacks of the prior art have yet to be further improved and improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a fuel cell bipolar plate sealing strip side-laying positioning structure, which aims to solve at least one technical problem of the technical problems.
The technical scheme adopted by the utility model is as follows:
the utility model provides a fuel cell bipolar plate sealing strip side paving positioning structure, which comprises an anode plate, a cathode plate and a sealing strip, wherein the anode plate and the cathode plate are oppositely arranged, and the sealing strip is arranged between the anode plate and the cathode plate; the opposite sides of the anode plate and the cathode plate are provided with sealing grooves, and the sealing strips are arranged in the sealing grooves; one of the side wall of the sealing groove and the side wall of the sealing strip is provided with a limiting bulge, and the other of the side wall of the sealing groove and the side wall of the sealing strip is provided with a limiting groove corresponding to the limiting bulge; the limiting bulge and the limiting groove are continuously arranged along the side walls of the sealing strip and the sealing groove; or the limiting bulges and the limiting grooves are provided with a plurality of parts, and the limiting bulges and the limiting grooves are arranged at intervals along the side walls of the sealing strips and the sealing grooves.
As a preferred embodiment of the present invention, the plurality of limiting protrusions are divided into a plurality of groups, each group including at least two limiting protrusions; a plurality of spacing recess divide into the multiunit, every group includes at least two spacing arch.
As a preferred embodiment of the present invention, a plurality of sets of the limiting protrusions are disposed on two sides of the sealing strip or the sealing groove, or a plurality of sets of the limiting protrusions are disposed on one side of the sealing strip or the sealing groove; the multiple groups of the limiting protrusions are arranged on the two sides of the sealing strip or the two sides of the sealing groove, or the multiple groups of the limiting grooves are arranged on one side of the sealing strip or the one side of the sealing groove.
In a preferred embodiment of the present invention, the sealing strip is made of a rubber material.
Due to the adoption of the technical scheme, the utility model has the beneficial effects that:
1. as an optimal implementation mode of the application, due to the design of the limiting protrusions and the limiting grooves, the contact area between the sealing strip and the sealing groove is increased, the connection strength between the sealing strip and the sealing groove can be improved, and the connection structure between the sealing strip and the sealing groove is more stable and reliable.
2. As an preferred embodiment of this application, the spacing arch and the spacing recess that this application provided have advantages such as simple structure, suitability are good, processing is convenient, especially to the great metal polar plate of length size, can guarantee to have more excellent sealing performance between the bipolar plate through the design of mating structure.
3. As an optimal implementation mode of the application, the limiting groove can also increase the glue containing amount of the sealing groove so as to reduce the glue overflowing risk, and therefore the sealing performance between the bipolar plates of the fuel cell can be further improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the application and are not intended to limit the utility model. In the drawings:
FIG. 1 is a schematic view of the structure of a plate in example 1;
FIG. 2 is a schematic structural view of the weather strip in embodiment 1;
FIG. 3 is a schematic view showing the structure of a plate in example 2;
fig. 4 is a schematic view of the structure of the weather strip of embodiment 2.
Wherein, the first and the second end of the pipe are connected with each other,
1 pole plate, 11 sealing grooves and 111 limiting grooves;
2, sealing strips and 21 limiting bulges;
and 3, gluing.
Detailed Description
In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those illustrated in the drawings, and are used merely to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1-4, the present invention provides a fuel cell bipolar plate 1 sealing strip 2 side-paving positioning structure, which comprises an anode plate 1, a cathode plate 1 and a sealing strip 2 arranged between the anode plate 1 and the cathode plate 1; a sealing groove 11 is formed in one side, opposite to the anode plate 1 and the cathode plate 1, of each anode plate, and a sealing strip 2 is arranged in each sealing groove 11; one of the side wall of the sealing groove 11 and the side wall of the sealing strip 2 is provided with a limiting bulge 21, and the other of the side wall of the sealing groove 11 and the side wall of the sealing strip is provided with a limiting groove 111 corresponding to the limiting bulge 21; the limiting bulge 21 and the limiting groove 111 are continuously arranged along the side walls of the sealing strip 2 and the sealing groove 11; or, a plurality of limiting protrusions 21 and a plurality of limiting grooves 111 are provided, and the plurality of limiting protrusions 21 and the plurality of limiting grooves 111 are arranged at intervals along the side walls of the sealing strip 2 and the sealing groove 11.
The two of the lateral wall at seal groove 11 and the lateral wall of sealing strip 2 that proposes in this application is provided with spacing arch 21, another of the two is provided with spacing recess 111 corresponding with spacing arch 21, thereby these two kinds of structures can be accurate mutually support and play location and spacing to sealing strip 2, guarantee that the subsides that sealing strip 2 can fasten and put among seal groove 11, simultaneously because spacing arch 21 and spacing recess 111's design, make the bonding area increase between sealing strip 2 and the seal groove 11, can improve the bonding force between sealing strip 2 and the seal groove 11 to a certain extent, make connection structure between the two more reliable and more stable. Simultaneously, spacing arch 21 and spacing recess 111 that this application provided have advantages such as simple structure, suitability are good, processing is convenient, especially to the great metal polar plate 1 of length size, can guarantee that polar plate 1 has more excellent sealing performance through the design of mating structure.
Further, as shown in fig. 3 and 4, a stopper projection 21 is provided on the side wall of the weather strip 2, and a stopper groove 111 is provided on the side wall of the seal groove 11. In the actual production process, firstly, the bottom of the sealing groove 11 is precoated with the adhesive 3 and the adhesive 3 is spread uniformly so as to make the thickness of the whole adhesive layer consistent, then the sealing strip 2 is buckled into the sealing groove 11, and the limiting bulge 21 on the side wall of the sealing strip 2 is correspondingly matched with the limiting groove 111 on the side wall of the sealing groove 11, so that the limiting arrangement between the sealing strip 2 and the sealing groove 11 is realized.
It should be noted that, in the present application, the arrangement manner of the limiting protrusion 21 and the limiting groove 111 is not limited to the above example, the above example is only a preferred embodiment of the present application, and it is also possible to select a scheme of arranging the limiting groove 111 on the sidewall of the sealing strip 2 and arranging the limiting protrusion 21 on the sidewall of the sealing groove 11, and also select a scheme of simultaneously arranging the limiting protrusion 21 and the limiting groove 111 on the sidewall of the sealing strip 2 and the sidewall of the sealing groove 11 at intervals, and the present application is not limited in particular.
It should also be noted that the arrangement forms of the limiting protrusions 21 and the limiting grooves 111 on the sealing strip 2 and the sealing groove 11 include, but are not limited to, single-side arrangement, double-side arrangement, inside and outside cross arrangement, inside and outside equidistant arrangement, inside and outside non-equidistant arrangement, and the like; the number of combinations of the retaining projections 21 and the retaining grooves 111 includes, but is not limited to, a single set, a plurality of sets, and the like.
The arrangement of the position-limiting protrusion 21 and the position-limiting groove 111 is exemplified by two specific embodiments:
example 1: referring to fig. 1 and 2, a limiting protrusion 21 is disposed on a sidewall of the sealing strip 2, a limiting groove 111 is disposed on the sealing groove 11, the limiting protrusion 21 is disposed at two sides of the sealing strip 2 at intervals in a crossed manner, and the limiting groove 111 is disposed at two sides of the sealing groove 11 at intervals in a crossed manner. The limiting protrusion 21 is accurately placed into the limiting groove 111 in the process of placing the sealing strip 2, so that the polar plate 1 can be used for positioning and limiting the sealing strip 2. During the assembly, at first at the bottom of seal groove 11 viscose 3 of precoating, later put sealing strip 2 subsides in seal groove 11, put the in-process at the subsides and put into spacing recess 111 with spacing arch 21 is accurate, make spacing arch 21 and spacing recess 111 form the cooperation structure and accomplish the location to sealing strip 2, limiting displacement, and spacing recess 111 in this embodiment adopts trapezoidal shape, spacing recess 111 is three to arrange for a set of, the equidistant setting of every group, spacing arch 21 corresponds the setting with spacing recess 111.
Example 2: referring to fig. 3 and 4, the difference from the previous embodiment is that in the present embodiment, the limiting protrusions 21 are symmetrically and equidistantly disposed on two sides of the sealing strip 2, the limiting grooves 111 are symmetrically and equidistantly disposed on two sides of the sealing groove 11, the limiting grooves 111 in the present embodiment are triangular, four limiting grooves 111 are arranged in one group, each group is equidistantly disposed, and the limiting protrusions 21 and the limiting grooves 111 are correspondingly disposed.
In the two embodiments, when the sealing strip 2 is actually attached, the adhesive 3 precoated on the bottom of the sealing groove 11 flows at the bottom of the sealing groove 11 and enters the limiting groove 111, which means that the limiting groove 111 can also increase the adhesive capacity of the sealing groove 11 to reduce the risk of adhesive overflow, and meanwhile, the arrangement of the limiting protrusion 21 and the limiting groove 111 increases the contact area between the sealing strip 2 and the sealing groove 11, thereby being beneficial to further improving the sealing performance between the fuel cell bipolar plates 1.
Of course, the above examples are only preferred embodiments of the present application, and the shapes of the limiting protrusion 21 and the limiting groove 111 are not limited to the trapezoid and the triangle in the above examples, and may also be other shapes such as rectangle, semicircle, etc.; the arrangement of the limiting protrusions 21 and the limiting grooves 111 can be adjusted adaptively according to actual process requirements and machining requirements.
As a preferred embodiment of the present application, the weather strip 2 in the present application is made of a rubber material. In a specific preferred embodiment, the sealing strip 2 can be made of silicon rubber, which has good high-temperature stability and strong weather resistance, and can be used for a long time, thereby being beneficial to reducing the production cost. Of course, the sealing strip 2 may also be made of different types of rubber materials such as ethylene propylene diene monomer rubber and neoprene rubber, or may be made of more different types of sealing materials such as nylon, which is not specifically limited in this application.
The method can be realized by adopting or using the prior art for reference in places which are not described in the utility model.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.
The above description is only an example of the present invention and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (4)
1. A fuel cell bipolar plate sealing strip side pavement positioning structure is characterized by comprising an anode plate, a cathode plate and a sealing strip, wherein the anode plate and the cathode plate are oppositely arranged, and the sealing strip is arranged between the anode plate and the cathode plate;
the opposite sides of the anode plate and the cathode plate are provided with sealing grooves, and the sealing strips are arranged in the sealing grooves; one of the side wall of the sealing groove and the side wall of the sealing strip is provided with a limiting bulge, and the other of the side wall of the sealing groove and the side wall of the sealing strip is provided with a limiting groove corresponding to the limiting bulge;
the limiting bulge and the limiting groove are continuously arranged along the side walls of the sealing strip and the sealing groove; or, the limiting protrusions and the limiting grooves are multiple in number and are arranged at intervals along the side walls of the sealing strips and the sealing grooves.
2. The fuel cell bipolar plate sealing strip side-paving positioning structure of claim 1, wherein a plurality of the limiting protrusions are divided into a plurality of groups, each group comprising at least two limiting protrusions; a plurality of spacing recess divide into the multiunit, and every group includes at least two spacing arch.
3. The fuel cell bipolar plate sealing strip side-paving positioning structure of claim 2, wherein a plurality of sets of the limiting protrusions are disposed on both sides of the sealing strip or the sealing groove, or a plurality of sets of the limiting protrusions are disposed on one side of the sealing strip or the sealing groove;
the multiple groups of the limiting protrusions are arranged on the two sides of the sealing strip or the two sides of the sealing groove, or the multiple groups of the limiting grooves are arranged on one side of the sealing strip or the one side of the sealing groove.
4. The fuel cell bipolar plate sealing strip side-lapping and positioning structure of claim 2, wherein the sealing strip is made of rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220106203.9U CN217035684U (en) | 2022-01-14 | 2022-01-14 | Fuel cell bipolar plate sealing strip side laying positioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220106203.9U CN217035684U (en) | 2022-01-14 | 2022-01-14 | Fuel cell bipolar plate sealing strip side laying positioning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217035684U true CN217035684U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220106203.9U Active CN217035684U (en) | 2022-01-14 | 2022-01-14 | Fuel cell bipolar plate sealing strip side laying positioning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217035684U (en) |
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2022
- 2022-01-14 CN CN202220106203.9U patent/CN217035684U/en active Active
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