CN216528967U

CN216528967U - UnitCell shared pipeline structure based on fuel cell

Info

Publication number: CN216528967U
Application number: CN202122951253.5U
Authority: CN
Inventors: 程旌德; 徐一凡; 唐厚闻; 梁鹏
Original assignee: Shanghai H Rise New Energy Technology Co Ltd
Current assignee: Shanghai H Rise New Energy Technology Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-13
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to a UnitCell shared pipeline structure based on a fuel cell, which comprises a membrane electrode assembly and peripheral frames arranged on two sides of the membrane electrode assembly, wherein bipolar plates are arranged at the top and the bottom of the membrane electrode assembly, the peripheral frames adopt hard peripheral frames, and flow field sealing is realized by adopting adhesion between the peripheral frames and the bipolar plates. Compared with the prior art, the utility model has the advantages of reducing the compression deformation error of the frame part in the assembling process, effectively improving the consistency of the output performance of the battery units in the galvanic pile and the like.

Description

UnitCell shared pipeline structure based on fuel cell

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a UnitCell shared pipeline structure based on fuel cells.

Background

In the existing fuel cell packaging unit technology, the peripheral frame of the membrane electrode assembly is made of a softer material, as shown in fig. 1, the frame material thickness and the compression deformation condition of the frame material need to be considered at the joint of the bipolar plates at two sides and the frame, if the pressure bearing capacity of the peripheral frame of the membrane electrode assembly is not considered, the compression deformation error in the stack assembly process is easily overlarge, the bipolar plates at two sides cannot be supported by the peripheral frame of the membrane electrode assembly, and the bipolar plates at two sides sink into the membrane electrode assembly, as shown in fig. 2, the output performance consistency of the cell units in the stack is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defect that the output performance consistency of the battery units in the cell stack is influenced due to the fact that the material of the peripheral frame of the membrane electrode assembly is soft in the prior art, and provides a UnitCell shared pipeline structure based on a fuel cell.

The purpose of the utility model can be realized by the following technical scheme:

a UnitCell shared pipeline structure based on a fuel cell comprises a membrane electrode assembly and peripheral frames arranged on two sides of the membrane electrode assembly, wherein bipolar plates are arranged at the top and the bottom of the membrane electrode assembly, and the peripheral frames are hard peripheral frames.

And the peripheral frame and the bipolar plate are glued to realize flow field sealing.

The length of the bipolar plate is greater than the sum of the lengths of the membrane electrode assembly and the peripheral frame.

The width of the peripheral frame is greater than or equal to the width of the membrane electrode assembly.

The membrane electrode assembly includes a proton exchange membrane, a cathode gas diffusion layer, and an anode gas diffusion layer.

Further, a cathode catalyst layer is arranged between the proton exchange membrane and the cathode gas diffusion layer.

Further, an anode catalyst layer is arranged between the proton exchange membrane and the anode gas diffusion layer.

Further, a substrate layer and a microporous layer are arranged in each of the cathode gas diffusion layer and the anode gas diffusion layer.

Further, a microporous layer in the cathode gas diffusion layer is positioned between the substrate layer and the cathode catalytic layer.

Further, a microporous layer in the anode gas diffusion layer is positioned between the substrate layer and the anode catalytic layer.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the hard material is used as the peripheral frame material of the membrane electrode assembly, the polar plates on two sides and the frame are glued to realize flow field sealing, the hard frame material ensures that the frame part is extremely small in compression deformation, the compression deformation error of the frame part in the assembling process is reduced, and the output performance consistency of the battery units in the galvanic pile is effectively improved.

Drawings

FIG. 1 is a schematic diagram of a prior art fuel cell packaging unit;

FIG. 2 is a schematic view of a fuel cell under pressure according to the prior art;

FIG. 3 is a schematic structural view of the present invention;

fig. 4 is a schematic view of the structure of the present invention after compression.

Reference numerals:

1-a bipolar plate; 2-a peripheral border; 3-a membrane electrode assembly; 4-proton exchange membrane.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Examples

As shown in fig. 3, a unitary cell shared channel structure based on a fuel cell includes a membrane electrode assembly 3 and peripheral frames 2 disposed at two sides of the membrane electrode assembly 3, bipolar plates 1 are disposed at the top and bottom of the membrane electrode assembly 3, and the peripheral frames 2 are hard peripheral frames.

And the peripheral frame 2 and the bipolar plate 1 are glued to realize flow field sealing.

The length of the bipolar plate 1 is greater than the sum of the lengths of the membrane electrode assembly 3 and the peripheral rim 2.

The width of the peripheral frame 2 is greater than or equal to the width of the membrane electrode assembly 3.

The membrane electrode assembly 3 includes a proton exchange membrane 4, a cathode gas diffusion layer, and an anode gas diffusion layer.

A cathode catalyst layer is arranged between the proton exchange membrane 4 and the cathode gas diffusion layer.

An anode catalyst layer is arranged between the proton exchange membrane 4 and the anode gas diffusion layer.

And the cathode gas diffusion layer and the anode gas diffusion layer are respectively provided with a substrate layer and a microporous layer.

The microporous layer in the cathode gas diffusion layer is positioned between the substrate layer and the cathode catalytic layer.

A microporous layer in the anode gas diffusion layer is positioned between the substrate layer and the anode catalytic layer.

In specific implementation, as shown in fig. 4, the bipolar plate 1 is stressed and extruded inwards to complete assembly in the assembly process, and at the moment, the peripheral frame 2 made of hard material has strong bearing capacity, so that the peripheral frame cannot deform, the compression deformation error of the frame part in the assembly process is reduced, and the output performance consistency of the battery units in the galvanic pile is effectively improved.

In addition, it should be noted that the shapes of the components, the names of the components, and the like of the specific embodiments described in the present specification may be different, and the above description is only an illustration of the structure of the present invention. All equivalent or simple changes in the structure, characteristics and principles of the utility model are included in the protection scope of the utility model. Various modifications or additions may be made to the described embodiments or methods may be similarly employed by those skilled in the art without departing from the scope of the utility model as defined in the appending claims.

Claims

1. The UnitCell shared pipeline structure based on the fuel cell is characterized by comprising a membrane electrode assembly (3) and peripheral frames (2) arranged on two sides of the membrane electrode assembly (3), wherein bipolar plates (1) are arranged at the top and the bottom of the membrane electrode assembly (3), and the peripheral frames (2) are hard peripheral frames.

2. The unitary cell common channel structure based on fuel cells as claimed in claim 1, wherein the flow field sealing is realized by gluing between the peripheral frame (2) and the bipolar plate (1).

3. A fuel cell based UnitCell common conduit structure, as claimed in claim 1, wherein the length of the bipolar plate (1) is greater than the sum of the lengths of the membrane electrode assembly (3) and the peripheral rim (2).

4. A fuel cell-based UnitCell common rail structure as claimed in claim 1, wherein the width of the peripheral rim (2) is greater than or equal to the width of the membrane electrode assembly (3).

5. The unit cell common channel structure based on a fuel cell according to claim 1, wherein the membrane electrode assembly (3) comprises a proton exchange membrane (4), a cathode gas diffusion layer and an anode gas diffusion layer.

6. The unitary cell common channel structure based on fuel cells according to claim 5, characterized in that a cathode catalyst layer is provided between the proton exchange membrane (4) and the cathode gas diffusion layer.

7. The unitary cell common conduit structure based on a fuel cell according to claim 6, wherein an anode catalytic layer is provided between the proton exchange membrane (4) and the anode gas diffusion layer.

8. The unitary cell-based manifold structure of claim 7, wherein a substrate layer and a microporous layer are disposed in each of the cathode gas diffusion layer and the anode gas diffusion layer.

9. The unitary cell-based manifold structure of claim 8, wherein the microporous layer in the cathode gas diffusion layer is positioned between a substrate layer and a cathode catalyst layer.

10. The unit cell common channel structure according to claim 8, wherein the microporous layer in the anode gas diffusion layer is located between a substrate layer and an anode catalytic layer.