Fuel cell metal bipolar plate manifold support structure

Abstract

The application discloses a kind of fuel cell metal bipolar plate total pipe support structure, including anode plate and cathode plate, and the two ends of anode plate and cathode plate are correspondingly provided with cavity mouth, and the cavity mouth of each corresponding anode plate and cathode plate constitutes a total pipe for medium inlet and outlet, and there is spacing between the edge of the cavity mouth of corresponding anode plate and cathode plate, and the cavity mouth of at least one corresponding anode plate and cathode plate is respectively provided with anode total pipe support structure and cathode total pipe support structure along edge, and anode total pipe support structure and cathode total pipe support structure support each other, and a plurality of holes for medium inlet and outlet are formed on anode total pipe support structure and / or cathode total pipe support structure.The application improves the strength of the structure on the total pipe of metal bipolar plate, ensures the normal flow of medium, and ensures the stability of metal bipolar plate work.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fuel cell, and relates to a metal bipolar plate, in particular to a fuel cell metal bipolar plate manifold support structure. BACKGROUND

[0002] In order to make the reaction gas and cooling water flow, the traditional fuel cell bipolar plate will be designed to open at the manifold, and the anode plate and cathode plate are in a relative "suspended" state. Figure 1 As shown in the figure, during the assembly and working process of the metal bipolar plate, due to the influence of external extrusion, vibration and other factors, the structure at the manifold on the anode plate 1 and the cathode plate 2 is easy to deform and lap, and the deformed part is shown in the dotted circle in the figure. Figure 1 Therefore, the flow of medium is affected, and the electrochemical reaction is adversely affected. SUMMARY

[0003] The present application provides a fuel cell metal bipolar plate manifold support structure to solve the above problems.

[0004] The purpose of the present application can be achieved by the following technical scheme: a fuel cell metal bipolar plate manifold support structure, comprising an anode plate and a cathode plate, the two ends of the anode plate and the cathode plate are correspondingly provided with a cavity opening, the cavity opening of each corresponding anode plate and cathode plate constitutes a manifold for the inlet and outlet of medium, and the edges of the cavity openings of the corresponding anode plate and cathode plate have a spacing, at least one cavity opening of the corresponding anode plate and cathode plate is respectively provided with an anode manifold support structure and a cathode manifold support structure along the edge, the anode manifold support structure and the cathode manifold support structure support each other, and a plurality of holes for the inlet and outlet of medium are provided on the anode manifold support structure and / or the cathode manifold support structure.

[0005] Further, the anode manifold support structure comprises a first annular transition surface and a first annular support surface, the outer edge of the first annular transition surface is connected with the edge of the cavity opening of the anode plate, the first annular support surface is parallel to the plate surface of the anode plate, and the outer edge of the first annular support surface is connected with the inner edge of the first annular transition surface; the cathode manifold support structure comprises a second annular transition surface and a second annular support surface, the outer edge of the second annular transition surface is connected with the edge of the cavity opening of the cathode plate, the second annular support surface is parallel to the plate surface of the cathode plate, and the outer edge of the second annular support surface is connected with the inner edge of the second annular transition surface; a plurality of holes are provided on the first annular transition surface and the second annular transition surface, and the first annular support surface and the second annular support surface are in close contact to support each other. Wherein, the first annular transition surface is inclined relative to the plate surface of the anode plate, and the second annular transition surface is inclined relative to the plate surface of the cathode plate.

[0006] Further, the anode header support structure comprises a first annular transition surface and a first annular support surface, the outer edge of the first annular transition surface is connected with the cavity opening edge of the anode plate, the first annular support surface is parallel with the plate surface of the anode plate, and the outer edge of the first annular support surface is connected with the inner edge of the first annular transition surface; the cathode header support structure comprises a second annular support surface, the second annular support surface is flush with the plate surface of the cathode plate and the outer edge thereof is connected with the cavity opening edge of the cathode plate; a plurality of holes are formed in the first annular transition surface, and the first annular support surface and the second annular support surface are in close contact to support each other. Wherein, the first annular transition surface is inclined relative to the plate surface of the anode plate.

[0007] Further, the anode header support structure comprises a first annular support surface, the first annular support surface is flush with the plate surface of the anode plate and the outer edge thereof is connected with the cavity opening edge of the anode plate; the cathode header support structure comprises a second annular transition surface and a second annular support surface, the outer edge of the second annular transition surface is connected with the cavity opening edge of the cathode plate, the second annular support surface is parallel with the plate surface of the cathode plate, and the outer edge of the second annular support surface is connected with the inner edge of the second annular transition surface; a plurality of holes are formed in the second annular transition surface, and the first annular support surface and the second annular support surface are in close contact to support each other. Wherein, the second annular transition surface is inclined relative to the plate surface of the cathode plate.

[0008] Further, the shape of the hole is circular, rectangular or elliptical.

[0009] Compared with the prior art, the beneficial effects of the present application are as follows: the anode header support structure is arranged at the cavity opening edge of the anode plate, the cathode header support structure is arranged at the cavity opening edge of the cathode plate, the anode header support structure and the cathode header support structure support each other, and the anode header support structure and / or the cathode header support structure is provided with holes for the medium to enter and exit, thereby improving the strength of the structure at the header of the metal bipolar plate, ensuring the normal flow of the medium and the stability of the metal bipolar plate. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a schematic diagram of the deformation of the structure at the header of the traditional metal bipolar plate.

[0011] Figure 2 It is a structure schematic diagram of the header support structure of the fuel cell metal bipolar plate according to Embodiment 1 of the present application.

[0012] Figure 3 It is a structure schematic diagram of the fuel cell formed by stacking the metal bipolar plate and the membrane electrode of Embodiment 1 of the present application.

[0013] Figure 4 It is a structure schematic diagram of the header support structure of the fuel cell metal bipolar plate according to Embodiment 2 of the present application.

[0014] Figure 5 Structure diagram of fuel cell metal bipolar plate manifold support structure of embodiment 3 of the present application.

[0015] The component numbers in the figure are as follows:

[0016] 1 anode plate

[0017] 2 cathode plate

[0018] 3 anode manifold support structure

[0019] 301 first annular transition surface

[0020] 302 first annular support surface

[0021] 4 cathode manifold support structure

[0022] 401 second annular transition surface

[0023] 402 second annular support surface

[0024] 5 hole

[0025] 6 membrane electrode. DETAILED DESCRIPTION

[0026] The specific embodiments of the present application are described in detail below with reference to the accompanying drawings, so that those skilled in the art can more clearly understand how to practice the present application. Although the present application is described in connection with its preferred specific embodiments, these embodiments are merely illustrative and not restrictive of the scope of the present application.

[0027] A fuel cell metal bipolar plate manifold support structure comprises an anode plate 1 and a cathode plate 2, and three cavities are formed in each of the two ends of the anode plate 1 and the cathode plate 2, respectively, each of the cavities of the anode plate 1 and the cathode plate 2 forms a manifold for the inlet and outlet of medium, and there is a space between the edges of the cavities of the corresponding anode plate 1 and cathode plate 2.

[0028] At least one of the cavities of the corresponding anode plate 1 and cathode plate 2 is provided with an anode manifold support structure 3 and a cathode manifold support structure 4 along the edge, respectively, a plurality of holes 5 for the inlet and outlet of medium are formed on the anode manifold support structure 3 and / or the cathode manifold support structure 4, and the anode manifold support structure 3 and the cathode manifold support structure 4 support each other, so as to avoid the cavities of the anode plate 1 and the cathode plate 2 from being deformed during assembly and operation, thereby affecting the normal flow of medium.

[0029] Embodiment 1

[0030] The anode manifold support structure 3 and the cathode manifold support structure 4 are both formed by extending and bending the edge of the cavity of the corresponding plate.

[0031] Referring to Figure 2 , the anode header support structure 3 comprises a first annular transition surface 301 and a first annular support surface 302, the first annular transition surface 301 is inclined relative to the plate surface of the anode plate 1, the outer edge of the first annular transition surface 301 is connected with the cavity opening edge of the anode plate 1, the first annular support surface 302 is parallel to the plate surface of the anode plate 1, the outer edge of the first annular support surface 302 is connected with the inner edge of the first annular transition surface 301.

[0032] The cathode header support structure 4 comprises a second annular transition surface 401 and a second annular support surface 402, the second annular transition surface 401 is inclined relative to the plate surface of the cathode plate 2, the outer edge of the second annular transition surface 401 is connected with the cavity opening edge of the cathode plate 2, the second annular support surface 402 is parallel to the plate surface of the cathode plate 2, the outer edge of the second annular support surface 402 is connected with the inner edge of the second annular transition surface 401.

[0033] A plurality of holes 5 are arranged on the first annular transition surface 301 and the second annular transition surface 401. In this embodiment, the plurality of holes 5 are arranged into two rows along the direction of the annular transition surface, and the two rows of holes 5 are staggered, and the shape of each hole 5 is circular.

[0034] The first annular support surface 302 and the second annular support surface 402 are in close contact to support each other, thereby realizing mutual support of the anode header support structure 3 and the cathode header support structure 4.

[0035] Figure 3 This is a structural schematic diagram of the metal bipolar plate and the membrane electrode 6 stack into a fuel cell. When the fuel cell is working, the structure at the header will not be deformed to affect the medium flow.

[0036] Embodiment 2

[0037] The difference from embodiment 1 is that, referring to Figure 4 , the plurality of holes 5 on the first annular transition surface 301 and the second annular transition surface 401 are uniformly distributed along the direction of the annular transition surface, and the shape of each hole 5 is rectangular.

[0038] Embodiments 3 and 4 are examples in which one of the anode header support structure 3 and the cathode header support structure 4 is a bent plate structure, and the other is a flat plate structure.

[0039] Embodiment 3

[0040] The difference from embodiments 1 and 2 is that, referring to Figure 5The anode header support structure 3 comprises a first annular transition surface 301 and a first annular support surface 302, and the holes 5 on the first annular transition surface 301 are arranged into three rows along the direction of the first annular transition surface 301, and the holes 5 in adjacent two rows are staggered.

[0041] The cathode header support structure 4 is formed by horizontally extending from the cavity opening edge of the cathode plate 2, and the cathode header support structure 4 only comprises a second annular support surface 402, which is flush with the plate surface of the cathode plate 2 and the outer edge of which is connected with the cavity opening edge of the cathode plate 2, i.e. the cathode header support structure 4 is a flat plate structure.

[0042] Embodiment 4

[0043] The difference from the embodiment 3 is that the anode header support structure 3 is formed by horizontally extending from the cavity opening edge of the anode plate 1, and the anode header support structure 3 only comprises a first annular support surface 302, which is flush with the plate surface of the anode plate 1 and the outer edge of which is connected with the cavity opening edge of the anode plate 1, i.e. the anode header support structure 3 is a flat plate structure.

[0044] The cathode header support structure 4 comprises a second annular transition surface 401 and a second annular support surface 402, and the holes 5 on the second annular transition surface 401 are arranged into three rows along the direction of the second annular transition surface 401, and the holes 5 in adjacent two rows are staggered.

[0045] The specific structure is referred to Figure 5 The opposite arrangement can be made, which is not shown by the picture.

[0046] In addition, the holes 5 can also be elliptical or other shapes, and the specific arrangement is referred to the above embodiments, which is not described here.

[0047] It should be noted that the application described above can have various transformed and modified embodiments, and is not limited to the specific embodiments of the above-described embodiments. The above-described embodiments are only used to illustrate the application, but not to limit the application. In general, the protection scope of the application should include those transformations or substitutions and modifications which are obvious to those skilled in the art.

Claims

1. A fuel cell metal bipolar plate manifold support structure comprising anode plates and cathode plates, both ends of said anode plates and cathode plates each having a cavity opening corresponding to each other, each of the cavity openings of the corresponding anode plate and cathode plate constituting a manifold for the passage of a medium, and having a gap between the edges of the cavity openings of the corresponding anode plate and cathode plate, characterized in that, At least one corresponding anode plate and cathode plate cavity mouth along the edge is provided with anode manifold support structure and cathode manifold support structure respectively, the anode manifold support structure and cathode manifold support structure support each other, anode manifold support structure and / or cathode manifold support structure is provided with a plurality of holes for medium inlet and outlet on it; The anode manifold support structure includes a first annular transition surface and a first annular support surface, the outer edge of the first annular transition surface is connected with the cavity mouth edge of the anode plate, the first annular support surface is parallel to the plate surface of the anode plate, and the outer edge of the first annular support surface is connected with the inner edge of the first annular transition surface;The cathode manifold support structure includes a second annular transition surface and a second annular support surface, the outer edge of the second annular transition surface is connected with the cavity mouth edge of the cathode plate, the second annular support surface is parallel to the plate surface of the cathode plate, and the outer edge of the second annular support surface is connected with the inner edge of the second annular transition surface;A plurality of holes are formed in the first annular transition surface and the second annular transition surface, and the first annular support surface and the second annular support surface are matched to support each other; The first annular transition surface is inclined relative to the plate surface of the anode plate, and the second annular transition surface is inclined relative to the plate surface of the cathode plate.

2. A fuel cell metal bipolar plate manifold support structure comprising anode plates and cathode plates, both ends of said anode plates and cathode plates are respectively provided with cavity openings, each of the cavity openings of the corresponding anode plate and cathode plate constitutes a manifold for the inlet and outlet of medium, and there is a gap between the edges of the corresponding cavity openings of the anode plate and cathode plate, characterized in that, At least one corresponding anode plate and cathode plate cavity mouth along the edge is provided with anode manifold support structure and cathode manifold support structure respectively, the anode manifold support structure and cathode manifold support structure support each other, anode manifold support structure and / or cathode manifold support structure is provided with a plurality of holes for medium inlet and outlet on it; The anode manifold support structure includes a first annular transition surface and a first annular support surface, the outer edge of the first annular transition surface is connected with the cavity mouth edge of the anode plate, the first annular support surface is parallel to the plate surface of the anode plate, and the outer edge of the first annular support surface is connected with the inner edge of the first annular transition surface;The cathode manifold support structure includes a second annular support surface, which is flush with the plate surface of the cathode plate and the outer edge of which is connected with the cavity mouth edge of the cathode plate;A plurality of holes are formed in the first annular transition surface, and the first annular support surface and the second annular support surface are matched to support each other; The first annular transition surface is inclined relative to the plate surface of the anode plate.

3. A fuel cell metal bipolar plate manifold support structure comprising anode plates and cathode plates, both ends of said anode plates and cathode plates are respectively provided with cavity openings, each of the cavity openings of the corresponding anode plate and cathode plate constitutes a manifold for the inlet and outlet of medium, and there is a gap between the edges of the corresponding cavity openings of the anode plate and cathode plate, characterized in that, At least one corresponding anode plate and cathode plate cavity mouth along the edge is provided with anode manifold support structure and cathode manifold support structure respectively, the anode manifold support structure and cathode manifold support structure support each other, anode manifold support structure and / or cathode manifold support structure is provided with a plurality of holes for medium inlet and outlet on it; The anode manifold support structure comprises a first annular support surface which is flush with the plate surface of the anode plate and whose outer edge is connected to the cavity opening edge of the anode plate; the cathode manifold support structure comprises a second annular transition surface and a second annular support surface, the outer edge of the second annular transition surface is connected to the cavity opening edge of the cathode plate, and the second annular support surface is parallel to the plate surface of the cathode plate, and the outer edge of the second annular support surface is connected to the inner edge of the second annular transition surface; a plurality of holes are formed in the second annular transition surface, and the first annular support surface and the second annular support surface are in close contact to support each other. The second annular transition surface is inclined relative to the plate surface of the cathode plate.

4. The fuel cell metal bipolar plate manifold support structure according to any one of claims 1 to 3, characterized by, The shape of the hole is circular, rectangular or elliptical.

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