CN214477554U - Fuel cell plate flow channel structure and fuel cell - Google Patents
Fuel cell plate flow channel structure and fuel cell Download PDFInfo
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- CN214477554U CN214477554U CN202120674409.7U CN202120674409U CN214477554U CN 214477554 U CN214477554 U CN 214477554U CN 202120674409 U CN202120674409 U CN 202120674409U CN 214477554 U CN214477554 U CN 214477554U
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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 fuel cell board runner structure is applied to fuel cell, fuel cell includes the fuel circulation board, the fuel circulation board includes: a central bore, a plurality of first flow passages and a plurality of second flow passages provided on the fuel flow plate; the fuel flow plate is installed through the central hole to the outside; the first flow passages are sequentially arranged on the periphery of the central hole in an annular shape; the second flow passage extends from the central bore to the fuel flow plate rim; the second flow passage communicates the central bore with the first flow passage. Fuel cell board runner structure set up first runner and second runner and be cyclic annular respectively and disperse the form setting and be in on the fuel flow board, compare in prior art, fuel cell board runner structure can avoid the fuel to pile up in pan feeding mouth one end, the fuel distributes inhomogeneously in the pipeline and causes the problem that the different position electricity generation performance of power generation unit produces the difference.
Description
Technical Field
The utility model relates to a fuel cell technical field especially relates to a fuel cell board runner structure and fuel cell.
Background
A fuel cell is a device that directly converts chemical energy stored in a fuel and an oxidant into electrical energy, and the fuel cell can continuously generate electricity when the fuel (a reducing agent) and the oxidant are supplied thereto. Compared with thermal power generation, steam turbine power generation and the like, the fuel cell has the advantages of modularity, high specific power and the like, can generate power in a centralized mode, and is suitable for distributed power supply.
In practice, a fuel cell generally includes a fuel storage device, a fuel power generation device, and a housing. The fuel power generation apparatus is generally formed by stacking a plurality of power generation modules, and a flow passage must be formed between the power generation modules to supply fluid fuel and oxidant (such as hydrogen fuel and oxygen) to the power generation modules, so the design of the flow passage affects the operating efficiency of the cell.
In the existing fuel cell, a flow channel in a unit power generation module is in one-way transportation, fluid flows through the flow channel along a straight line or a curve in one direction from a feeding port and flows out from a discharge port, the fuel is consumed while flowing in a pipeline, the content of the fuel is less as the fuel is closer to one end of the discharge port, and the fuel is unevenly distributed in the front and at the back of the pipeline. If the load of the fuel cell is increased, the electrochemical reaction amount at the fuel thin part of the pipeline is insufficient, and the platinum catalyst on the proton exchange membrane of the unit power generation module, which is caused by impurities in the pipeline, reacts, so that the platinum catalyst on the proton exchange membrane is damaged, the use of the unit power generation module is influenced, and the service life of the fuel cell is further influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve among the prior art fuel cell inside unit power generation unit's pipeline trend single, the inhomogeneous problem of fluid fuel distribution in the pipeline, the utility model provides a can evenly spread the fuel cell board runner structure in unit power generation module with fuel, based on fuel cell board runner structure, the utility model discloses still disclose a fuel cell.
The utility model discloses a following technical scheme realizes:
a fuel cell plate flow channel structure for use in a fuel cell, the fuel cell comprising a fuel flow plate, the fuel flow plate comprising: a central bore, a plurality of first flow passages and a plurality of second flow passages provided on the fuel flow plate;
the fuel flow plate is installed through the central hole to the outside;
the first flow passages are sequentially arranged on the periphery of the central hole in an annular shape; the second flow passage extends from the central bore to the fuel flow plate rim; the second flow passage communicates the central bore with the first flow passage.
Further, the central hole is provided in the geometric center of the fuel flow plate.
Further, the plurality of first flow channels are parallel to each other and to the edge of the fuel flow plate.
Furthermore, the geometric centers of the first flow channels are located at the same point, and the distances between the adjacent first flow channels are equal.
Furthermore, the second flow channels are linear, and included angles between every two adjacent second flow channels are equal.
Further, the fuel flow plate is provided with a sealing ring, the sealing ring is arranged at the edge of the fuel flow plate, and the sealing ring seals the fuel flow plate.
A fuel cell, comprising: the center tube, install two collecting plates on the center tube and fix a plurality of electricity generation units between the collecting plate, electricity generation unit includes: the fuel cell comprises a foaming metal plate, a fuel flow plate and a proton exchange membrane fixed between the foaming metal plate and the fuel flow plate, wherein the fuel flow plate is provided with a fuel cell plate flow channel structure facing the proton exchange membrane;
the fuel flow plate is sleeved on the central pipe through the central hole, the central pipe is communicated with the second flow passage, and fluid fuel enters the first flow passage and the second flow passage and contacts the proton exchange membrane; oxygen enters the expanded metal sheet and contacts the proton exchange membrane.
Further, a wall hole is formed in the central tube, one end of the second flow passage is open to the wall hole, and the fluid fuel enters the second flow passage through the wall hole.
Furthermore, a connector is arranged at one end of the central tube, a tube plug is arranged at the other end of the central tube, the tube plug seals one end of the central tube, the central tube is communicated with an external pipeline through the connector, and fluid fuel enters the central tube through the connector.
The beneficial effects of the utility model reside in that:
the utility model discloses a fuel cell board runner structure be provided with first runner and second runner respectively, first runner and second runner be cyclic annular respectively and diverge the form and set up on the fuel runner board, when fluid fuel lets in the fuel runner board, fluid fuel gets into the first runner along the second runner respectively, and along the first runner evenly spread on the fuel runner board, the utility model discloses a through the first runner with the second runner, make fluid fuel distribute the fuel through the mode of multidirectional scattering and fill up the fuel runner board, compare in prior art, the utility model discloses a fuel cell board runner structure can avoid fuel to pile up in pan feeding mouth one end, and fuel distributes the problem that the electricity generation performance of power generation unit different positions produces the difference in the pipeline inhomogeneous;
based on fuel cell board runner structure, fuel cell realize with the same technological effect of fuel cell board runner structure.
Drawings
Fig. 1 is a schematic perspective view of a fuel cell plate according to the present invention;
fig. 2 is a schematic perspective view of a fuel cell according to the present invention;
fig. 3 is a schematic exploded view of the present invention;
fig. 4 is a schematic view of an exploded structure of a single power generation unit in the present invention.
Detailed Description
In order to make the objects, technical solutions and effects of the present invention clearer and clearer, the following description of the present invention will refer to the accompanying drawings and illustrate embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Referring to fig. 1, the present invention discloses a flow channel structure of a fuel cell plate, which is applied to a fuel cell, wherein the fuel cell comprises a fuel flow plate 1, and the fuel flow plate 1 comprises: a central hole 11, a plurality of first flow channels 12 and a plurality of second flow channels 13 provided on the fuel flow plate 1. The fuel flow plate 1 is mounted through the central hole 11 to the outside.
The first flow passages 12 are sequentially arranged on the periphery of the central hole 11 in an annular shape; the second flow channel 13 extends from the central hole 11 to the edge of the fuel flow plate 1; the second flow passage 13 communicates the center hole 11 with the first flow passage 12.
In the embodiment, the fuel flow plate 1 is installed outwards through the central hole 11, the first flow channel 12 and the second flow channel 13 are crosswise arranged on the fuel flow plate 1 through a ring-shaped and divergent structure, so that the fluid fuel is distributed on the fuel flow plate in a multi-directional movement mode, and the problem that the fluid fuel flows in and out in a single direction to cause uneven distribution of the fuel in the flow channels is avoided.
The central hole 11 is arranged in the geometric centre of the fuel flow plate 1.
In an embodiment of the invention, the fuel flow plate 1 is circular, and the central hole 11 is arranged in the center of the fuel flow plate 1. The position of the central opening 11 is particularly important since the first flow channel 12 is arranged around the central opening 11 and the second flow channel 13 is arranged with a diverging shape of the central opening 11. In this embodiment, the central hole 11 is disposed at the center of the fuel flow plate 1, so that the fluid fuel is ensured to be uniformly distributed on the fuel flow plate 1 centering on the central hole 11 after entering the fuel flow plate 1, and the fuel is prevented from being concentrated and accumulated on one side of the fuel flow plate 1.
In other practical embodiments of the present invention, if the fuel flow plate 1 is arranged as a rectangle, the central hole 11 is arranged at the intersection of the bisectors of the angles of the fuel flow plate 1.
The first flow channels 12 are parallel to each other and to the edge of the fuel flow plate 1.
The geometric centers of a plurality of the first flow channels 12 are located at the same point, and the distances between the adjacent first flow channels 12 are equal.
In the above embodiment, taking the fuel flow plate 1 as a circular shape as an example, the plurality of first flow channels 12 are concentrically arranged on the fuel flow plate 1, and the central hole 11 is arranged at the center of the first flow channel 12. And the radii of the plurality of first flow channels 12 are sequentially increased in an equal difference manner. In another embodiment of the present invention, if the fuel flow plate 1 is rectangular, the first flow channels 12 are rectangular, the circumferences of the adjacent first flow channels 12 are sequentially increased in an equal difference manner, and the intersection point of the diagonals of the first flow channels 12 coincides with the intersection point of the diagonals of the fuel flow plate 1.
The second flow channels 13 are linear, and the included angles between adjacent second flow channels 13 are equal.
The distribution of the second flow channels 13 is divergent, and when the fluid fuel enters the second flow channels 13, the fluid fuel flows to different positions of the fuel flow plate 1 along the plurality of second flow channels 13; meanwhile, when the fluid fuel flows to the intersection point of the first flow channel 12 and the second flow channel 13, the fluid fuel enters the first flow channel 12 along two sides, and the aim of multi-directional uniform distribution of the fluid fuel is fulfilled.
In the above embodiment, in order to ensure the uniform distribution of the fluid fuel, the preferred shape of the fuel flow plate 1 of the present invention is circular, so as to avoid the occurrence of corners in the fuel flow plate 1, and the first flow channel 12 with a circular arrangement can ensure that the density of the fluid fuel in the first flow channel 12 is the same, so as to ensure the uniform distribution of the fluid fuel. Meanwhile, the second flow channels 13 are distributed along the radius of the fuel flow plate 1, so that the fluid fuel enters the fuel flow plate 1 in a multi-directional flow manner, and the uniform distribution of the fluid fuel is further ensured.
The fuel flow plate 1 is provided with a sealing ring 14, the sealing ring 14 is arranged at the edge of the fuel flow plate 1, and the sealing ring 14 seals the fuel flow plate 1. The gasket 14 prevents the fluid fuel from leaking out of the fuel cell along the edge of the fuel flow plate 1, ensuring the full use of the fluid fuel and avoiding waste or increased consumption of the fluid fuel.
Referring to fig. 2 to fig. 3, based on the flow channel structure of the fuel cell plate, the present invention further discloses a fuel cell, including: a center pipe 200, two current collecting tabs 300 mounted on the center pipe 200, and a plurality of power generation units 100 fixed between the current collecting tabs 300, the power generation units 100 including: the fuel cell comprises a foaming metal plate 2, a fuel flow plate 1 and a proton exchange membrane 3 fixed between the foaming metal plate 2 and the fuel flow plate 1, wherein the fuel flow plate 1 is provided with a fuel cell plate flow channel structure facing the proton exchange membrane 3.
The fuel flow plate 1 is sleeved on the central pipe 200 through the central hole 11, the central pipe 200 is communicated with the second flow channel 13, and fluid fuel enters the first flow channel 12 and the second flow channel 13 and contacts the proton exchange membrane 3; oxygen enters the expanded metal sheet 2 and contacts the proton exchange membrane 3.
In an embodiment of the present invention, the fuel cell is a hydrogen fuel cell, the fluid fuel is hydrogen, the hydrogen is distributed on the fuel flow plate 1 through the central tube 200, the second flow channel 13 and the first flow channel 12 in sequence when entering the fuel cell, the proton exchange membrane 3 is provided with a catalyst, during the circulation process, the hydrogen and the oxygen perform electrochemical reaction on the proton exchange membrane 3, the electrons generated in the fuel cell move directionally, the electrons are concentrated on the collecting plate 300, the external circuit passes through the collecting plate 300 and is electrically connected to the fuel cell, and the fuel cell supplies power to the external circuit.
In the above embodiment, the reaction process of the fluid fuel and the oxygen on the proton exchange membrane 3, the material and action principle of the proton exchange membrane 3, and the working personnel in the field can be realized through the prior art, which is not described in detail in the present invention.
Specifically, the central tube 200 is provided with a wall hole 201, one end of the second flow channel 13 is opened toward the wall hole 201, and the fluid fuel enters the second flow channel 13 through the wall hole 201.
The central tube 200 is provided with a connector 202 at one end and a plug 203 at the other end, the plug 203 seals one end of the central tube 200, the central tube 200 is communicated with an external pipeline through the connector 202, and fluid fuel enters the central tube 200 through the connector.
When fluid fuel moves in the fuel cell, the fluid fuel can only enter the fuel flow plate 1 through the central pipe 200 through the wall hole 201, and the seal ring 14 and the pipe plug 203 respectively seal the fuel flow plate 1 and the central pipe 200 to avoid the fluid fuel from leaking. Meanwhile, a sealing gasket 204 is disposed between the foamed metal plate 2 and the central tube 200, and the sealing gasket 204 prevents the fluid fuel in the central tube 200 from entering the foamed metal plate 2 from the central tube 200 and directly contacting oxygen.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (9)
1. A fuel cell plate flow channel structure for use in a fuel cell, the fuel cell comprising a fuel flow plate, the fuel flow plate comprising: a central bore, a plurality of first flow passages and a plurality of second flow passages provided on the fuel flow plate;
the fuel flow plate is installed through the central hole to the outside;
the first flow passages are sequentially arranged on the periphery of the central hole in an annular shape; the second flow passage extends from the central bore to the fuel flow plate rim; the second flow passage communicates the central bore with the first flow passage.
2. The fuel cell plate flow channel structure of claim 1, in which the central aperture is disposed at a geometric center of the fuel flow plate.
3. The fuel cell plate flow channel structure of claim 1, wherein a plurality of the first flow channels are parallel to each other and to an edge of the fuel flow plate.
4. The fuel cell plate flow channel structure of claim 3, wherein the geometric centers of a plurality of the first flow channels are located at the same point, and the distances between adjacent first flow channels are equal.
5. The fuel cell plate flow channel structure of claim 1, wherein the second flow channels are linear and the included angle between adjacent second flow channels is equal.
6. A fuel cell plate flow channel structure according to claim 1, in which the fuel flow plate is provided with a sealing ring, the sealing ring being provided at the fuel flow plate rim, the sealing ring closing the fuel flow plate.
7. A fuel cell, comprising: the center tube, install two collecting plates on the center tube and fix a plurality of electricity generation units between the collecting plate, electricity generation unit includes: a fuel flow plate, and a proton exchange membrane fixed between the expanded metal plate and the fuel flow plate, the fuel flow plate being provided with the fuel cell plate flow channel structure of any one of claims 1 to 6 on a side facing the proton exchange membrane;
the fuel flow plate is sleeved on the central pipe through the central hole, the central pipe is communicated with the second flow passage, and fluid fuel enters the first flow passage and the second flow passage and contacts the proton exchange membrane; oxygen enters the expanded metal sheet and contacts the proton exchange membrane.
8. The fuel cell according to claim 7, wherein the center pipe is provided with a wall hole, and the second flow path opens at one end toward the wall hole, and the fluid fuel enters the second flow path through the wall hole.
9. The fuel cell of claim 7, wherein the center tube is provided with a port at one end and a plug at the other end, the plug closing one end of the center tube, the center tube communicating with an external pipe through the port, and fluid fuel entering the center tube through the port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120674409.7U CN214477554U (en) | 2021-04-01 | 2021-04-01 | Fuel cell plate flow channel structure and fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120674409.7U CN214477554U (en) | 2021-04-01 | 2021-04-01 | Fuel cell plate flow channel structure and fuel cell |
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| CN214477554U true CN214477554U (en) | 2021-10-22 |
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| CN202120674409.7U Active CN214477554U (en) | 2021-04-01 | 2021-04-01 | Fuel cell plate flow channel structure and fuel cell |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851668A (en) * | 2021-10-29 | 2021-12-28 | 山东建筑大学 | Wave-shaped flow field structure of proton exchange membrane fuel cell |
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2021
- 2021-04-01 CN CN202120674409.7U patent/CN214477554U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113851668A (en) * | 2021-10-29 | 2021-12-28 | 山东建筑大学 | Wave-shaped flow field structure of proton exchange membrane fuel cell |
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