CN114420965A - Gas inlet and outlet gas distribution box of fuel cell stack - Google Patents
Gas inlet and outlet gas distribution box of fuel cell stack Download PDFInfo
- Publication number
- CN114420965A CN114420965A CN202111555027.3A CN202111555027A CN114420965A CN 114420965 A CN114420965 A CN 114420965A CN 202111555027 A CN202111555027 A CN 202111555027A CN 114420965 A CN114420965 A CN 114420965A
- Authority
- CN
- China
- Prior art keywords
- plate
- gas distribution
- gas
- outlet
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a gas inlet and outlet distribution box of a fuel cell stack, which comprises a gas inlet plate, a gas outlet plate and a gas distribution plate, wherein the gas inlet plate and the gas outlet plate are respectively positioned at two opposite sides of a reactor core, the gas inlet plate and the gas outlet plate clamp the reactor core, the gas inlet plate is provided with a gas inlet cavity facing the opening of the reactor core, the gas inlet cavity is externally connected with a gas inlet pipe, the gas outlet plate is provided with a gas outlet cavity facing the opening of the reactor core, the gas outlet cavity is externally connected with a gas outlet pipe, the gas distribution plate is provided with a plurality of through holes which are uniformly and alternately arranged, and the gas distribution plate is arranged at the opening of the gas inlet plate and/or the opening of the gas outlet plate. The gas inlet and outlet distribution box of the fuel cell stack can uniformly supply gas to the reactor core, and has the advantages of high performance of the fuel cell stack, simple structure and low cost.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a gas inlet and outlet distribution box of a fuel cell stack.
Background
The fuel cell is a power generation device which directly converts chemical energy in fuel into electric energy, and can be used as a main power source of a distributed power generation system and various transportation vehicles due to the outstanding advantages of high energy conversion efficiency, high reliability, environmental friendliness, long service life and the like.
The uniformity of air intake of the fuel cell directly affects the performance of the fuel cell, and the fuel cell in the related art comprises two modes of directly ventilating the cell plate and ventilating the cell plate through the air intake manifold.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides the gas inlet and outlet distribution box of the fuel cell stack, the gas inlet and outlet distribution box of the fuel cell stack can uniformly supply gas to the reactor core, and the fuel cell stack has high performance, simple structure and low cost.
The fuel cell stack gas inlet and outlet distribution box of the embodiment of the invention comprises: the fuel cell stack comprises an air inlet plate and an air outlet plate, wherein the air inlet plate and the air outlet plate are respectively positioned on two opposite sides of a reactor core of the fuel cell stack and clamp the reactor core, the air inlet plate is provided with an air inlet cavity which is opened towards the reactor core, the air inlet cavity is externally connected with an air inlet pipe, the air outlet plate is provided with an air outlet cavity which is opened towards the reactor core, and the air outlet cavity is externally connected with an air outlet pipe; the gas distribution plate is provided with a plurality of through holes which are uniformly arranged at intervals, and the opening of the gas inlet plate and/or the opening of the gas outlet plate is provided with the gas distribution plate.
According to the gas inlet and outlet distribution box of the fuel cell stack, the gas distribution plate is arranged at the opening of the gas inlet plate and/or the opening of the gas outlet plate, the gas distribution plate is provided with the plurality of through holes which are uniformly and at intervals, so that the gas distribution plate can be used for carrying out choked flow pressurization on the gas flow in the gas inlet cavity and/or the gas outlet cavity so as to improve the uniformity of the gas in the gas cavity, and meanwhile, the through holes which are uniformly and at intervals are arranged on the gas distribution plate are used for further ensuring that the gas flow is uniformly distributed before flowing through the reactor core, so that the uniformity of the performance of the cell plates in the reactor core is ensured, the overall performance of the fuel cell stack is improved, and the gas distribution box is simple in structure and low in cost.
In some embodiments, the gas distribution plate comprises a first gas distribution plate and a second gas distribution plate, the cross-sectional area of the through holes on the first gas distribution plate is different from the cross-sectional area of the through holes on the second gas distribution plate, and/or the pitch of the through holes on the first gas distribution plate is different from the pitch of the through holes on the second gas distribution plate.
In some embodiments, the first gas distribution plate is adjacent to the cell stack relative to the second gas distribution plate, and the cross-sectional area of the through holes on the first gas distribution plate is smaller than the cross-sectional area of the through holes on the second gas distribution plate.
In some embodiments, the pitch of the through holes on the first gas distribution plate is smaller than the pitch of the through holes on the second gas distribution plate.
In some embodiments, the shape of the through holes on the first gas distribution plate is different from the shape of the through holes on the second gas distribution plate.
In some embodiments, the fuel cell stack inlet and outlet gas distribution chamber further comprises an adsorption plate located between the inlet plate and the core, and the adsorption plate can adsorb particulate matters, impurity gases and the like.
In some embodiments, the fuel cell stack inlet and outlet gas distribution chamber further comprises a catalytic element located between the inlet plate and the core, the catalytic element being capable of catalytically reforming high carbon fuel.
In some embodiments, a plurality of the through holes are arranged in a plurality of rows and a plurality of columns in a rectangular shape.
In some embodiments, the gas distribution plate is bonded, welded, or snapped to the gas inlet plate and/or the gas outlet plate.
Drawings
Fig. 1 is an exploded view of an inlet and outlet air distribution chamber of a fuel cell stack according to an embodiment of the present invention.
Reference numerals:
the reactor core comprises a reactor core 1, an air inlet plate 2, an air inlet pipe 21, an air outlet plate 3, an air outlet pipe 31, an air distribution plate 4, a first air distribution plate 41, a second air distribution plate 42 and an adsorption plate 5.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the fuel cell stack inlet and outlet air distribution chamber according to the embodiment of the present invention includes an inlet plate 2, an outlet plate 3, and an air distribution plate 4.
As shown in fig. 1, the gas inlet plate 2 and the gas outlet plate 3 are respectively located on two opposite sides of the reactor core 1, the gas inlet plate 2 and the gas outlet plate 3 clamp the reactor core 1, the gas inlet plate 2 has a gas inlet cavity opening toward the reactor core 1, the gas inlet cavity is externally connected with a gas inlet pipe 21, the gas outlet plate 3 has a gas outlet cavity opening toward the reactor core 1, and the gas outlet cavity is externally connected with a gas outlet pipe 31.
It will be appreciated that fuel gas is introduced into the inlet chamber through the inlet pipe 21, the fuel gas in the inlet chamber can flow through the core 1 through the openings and undergo chemical reaction in the core 1 to convert chemical energy into electrical energy, and the reacted product or excess gas can flow into the outlet chamber and be discharged from the outlet pipe 31.
Further, as shown in fig. 1, the gas distribution plate 4 has a plurality of through holes uniformly and at intervals, and the gas distribution plate 4 is disposed at the opening of the gas inlet plate 2 and/or at the opening of the gas outlet plate 3.
It should be noted that, in the related art, the inlet cavity and the outlet cavity are directly ventilated with the core, and the inventor finds that, in the structure, the gas pressure in the inlet cavity at the position close to the inlet pipe is high, and the gas pressure at the position farther away from the inlet pipe is lower, which causes the flow rate of gas flowing through the core to be uneven, and the overall performance of the cell stack is poor.
And in this application, use the side of admitting air as the example, the gas distribution plate 4 is connected and can be played certain choked flow pressurization effect to the gas outgoing of the intracavity of admitting air at the opening part of the gas admission plate 2 to make gas fully diffuse evenly in the intracavity of admitting air, then even and interval arrangement's through-hole can make the even flow direction of the air current of the intracavity of admitting air core 1, in order to reduce because of the inhomogeneous possibility that leads to the output performance of cell stack to receive the influence of gas distribution.
Preferably, as shown in fig. 1, the gas distribution plates 4 are respectively disposed at the opening of the gas inlet plate 2 and the opening of the gas outlet plate 3, so that pressure balance at two sides of the reactor core 1 is facilitated, and uniformity of gas flow is improved.
According to the gas inlet and outlet distribution box of the fuel cell stack disclosed by the embodiment of the invention, the gas distribution plate is arranged at the opening of the gas inlet plate and/or the opening of the gas outlet plate, and is provided with a plurality of uniform through holes which are arranged at intervals, so that the gas distribution plate can be used for carrying out choked flow pressurization on the gas flow in the gas inlet cavity and/or the gas outlet cavity so as to improve the uniformity of the gas in the gas cavity, and meanwhile, the uniform through holes which are arranged at intervals on the gas distribution plate are used for further ensuring that the gas flow is uniformly distributed before flowing through the reactor core, so that the uniform performance of the cell plates in the reactor core is ensured, the overall performance of the fuel cell stack is improved, and the gas distribution box is simple in structure and low in cost.
Further, as shown in fig. 1, the gas distribution plate 4 includes a first gas distribution plate 41 and a second gas distribution plate 42, and a cross-sectional area of the through holes of the first gas distribution plate 41 is different from a cross-sectional area of the through holes of the second gas distribution plate 42, and/or a pitch of the through holes of the first gas distribution plate 41 is different from a pitch of the through holes of the second gas distribution plate. Therefore, the plurality of gas distribution plates 4 can form a stepped flow blocking and pressurizing effect, so that the uniformity of the airflow is better, and the performance of the fuel cell stack is further optimized.
Alternatively, as shown in fig. 1, the first gas distribution plate 41 is adjacent to the cell stack relative to the second gas distribution plate 42, the cross-sectional area of the through holes on the first gas distribution plate 41 is smaller than that of the through holes on the second gas distribution plate 42, and the pitch of the through holes on the first gas distribution plate 41 is smaller than that of the through holes on the second gas distribution plate 42. In other words, the holes of the through holes on the gas distribution plate 4 adjacent to the core 1 are small and have high density, so that the airflow can be distributed more finely and uniformly, and the uniformity of the gas distribution is improved.
Alternatively, the shape of the through holes on the first gas distribution plate 41 is different from the shape of the through holes on the second gas distribution plate 42.
Further, as shown in fig. 1, the gas inlet and outlet distribution box of the fuel cell stack further includes an adsorption plate 5, the adsorption plate 5 is located between the gas inlet plate 2 and the core 1, and the adsorption plate 5 can adsorb impurity gas or particulate matter. Preferably, the adsorption plate 5 is located between the first gas distribution plate 41 and the second gas distribution plate 42.
Specifically, as shown in fig. 1, a second gas distribution plate 42, an adsorption plate 5 and a first gas distribution plate 41 are sequentially arranged between the gas inlet plate 2 and the core 1, the adsorption plate 5 is located between the first gas distribution plate 41 and the second gas distribution plate 42, and a second gas distribution plate 42 and a first gas distribution plate 41 are also sequentially arranged between the gas outlet plate 3 and the core 1, it can be understood that the adsorption plate 5 can adsorb impurity gases to ensure the purity of the gases used for reaction, and the first gas distribution plate 41 and the second gas distribution plate 42 located between the gas outlet plate 3 and the core 1 are oppositely arranged with the first gas distribution plate 41 and the second gas distribution plate 42 located between the gas inlet plate 2 and the core 1, so as to balance the gas pressure in and out.
Optionally, the fuel cell stack inlet and outlet gas distribution box further comprises a catalytic element, the catalytic element is located between the inlet plate and the core, and the catalytic element can perform catalytic reforming on high-fuel. It is understood that the catalytic member and the adsorption plate may be provided at the same time, or one of them may be selectively provided according to the requirement.
Optionally, as shown in fig. 1, the plurality of through holes are arranged in a rectangular shape in a plurality of rows and a plurality of columns, and are convenient to process, high in arrangement density and good in uniformity.
Further, the gas distribution plate 4 is bonded, welded or buckled with the gas inlet plate 2 and/or the gas outlet plate 3. In particular, any means suitable for high temperature fixing may suffice for the assembly of the gas panel 4.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
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; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. 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. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A fuel cell stack inlet and outlet gas distribution box, comprising:
the fuel cell stack comprises an air inlet plate and an air outlet plate, wherein the air inlet plate and the air outlet plate are respectively positioned on two opposite sides of a reactor core of the fuel cell stack and clamp the reactor core, the air inlet plate is provided with an air inlet cavity which is opened towards the reactor core, the air inlet cavity is externally connected with an air inlet pipe, the air outlet plate is provided with an air outlet cavity which is opened towards the reactor core, and the air outlet cavity is externally connected with an air outlet pipe;
the gas distribution plate is provided with a plurality of through holes which are uniformly arranged at intervals, and the opening of the gas inlet plate and/or the opening of the gas outlet plate is provided with the gas distribution plate.
2. The fuel cell stack inlet and outlet gas distribution box according to claim 1, wherein the gas distribution plate comprises a first gas distribution plate and a second gas distribution plate, the cross-sectional area of the through holes on the first gas distribution plate is different from the cross-sectional area of the through holes on the second gas distribution plate, and/or the pitch of the through holes on the first gas distribution plate is different from the pitch of the through holes on the second gas distribution plate.
3. The fuel cell stack inlet and outlet gas distribution box of claim 2, wherein the first gas distribution plate is adjacent to the cell stack relative to the second gas distribution plate, and the cross-sectional area of the through holes on the first gas distribution plate is smaller than the cross-sectional area of the through holes on the second gas distribution plate.
4. The fuel cell stack inlet and outlet gas distribution box according to claim 2, wherein the pitch of the through holes on the first gas distribution plate is smaller than the pitch of the through holes on the second gas distribution plate.
5. The fuel cell stack inlet and outlet gas distribution box according to claim 2, wherein the shape of the through holes on the first gas distribution plate is different from the shape of the through holes on the second gas distribution plate.
6. The fuel cell stack inlet and outlet gas distribution box according to any one of claims 1 to 5, further comprising an adsorption plate located between the inlet plate and the core, the adsorption plate being capable of adsorbing particulate matter, impurity gases, and the like.
7. The fuel cell stack inlet and outlet gas distribution box according to any one of claims 1-6, further comprising a catalytic element located between the inlet plate and the core, the catalytic element being capable of catalytically reforming a high carbon fuel.
8. The fuel cell stack inlet and outlet gas distribution box according to claim 1, wherein the plurality of through holes are arranged in a plurality of rows and a plurality of columns in a rectangular shape.
9. The fuel cell stack of claim 1, wherein the gas distribution plate is bonded, welded, or snapped to the gas inlet plate and/or the gas outlet plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111555027.3A CN114420965A (en) | 2021-12-17 | 2021-12-17 | Gas inlet and outlet gas distribution box of fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111555027.3A CN114420965A (en) | 2021-12-17 | 2021-12-17 | Gas inlet and outlet gas distribution box of fuel cell stack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114420965A true CN114420965A (en) | 2022-04-29 |
Family
ID=81266880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111555027.3A Withdrawn CN114420965A (en) | 2021-12-17 | 2021-12-17 | Gas inlet and outlet gas distribution box of fuel cell stack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114420965A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960428A (en) * | 2023-09-21 | 2023-10-27 | 爱德曼氢能源装备有限公司 | Manifold device of fuel cell stack |
-
2021
- 2021-12-17 CN CN202111555027.3A patent/CN114420965A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960428A (en) * | 2023-09-21 | 2023-10-27 | 爱德曼氢能源装备有限公司 | Manifold device of fuel cell stack |
| CN116960428B (en) * | 2023-09-21 | 2023-12-12 | 爱德曼氢能源装备有限公司 | Manifold device of fuel cell stack |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8535844B2 (en) | Fuel cell module | |
| US6635378B1 (en) | Fuel cell having improved condensation and reaction product management capabilities | |
| EP2273594B1 (en) | Reformer, cell stack device, fuel cell module, and fuel cell device | |
| US7393605B2 (en) | Fuel cell end unit with integrated heat exchanger | |
| US7648793B2 (en) | Fuel cell system comprising an assembly manifold having a connection block | |
| EP0963617B1 (en) | Improved catalyst assembly for internal reforming fuel cell | |
| US8822090B2 (en) | Internally reforming fuel cell assembly with staged fuel flow and selective catalyst loading for improved temperature uniformity and efficiency | |
| JP4842072B2 (en) | Fuel cell and fuel cell system having the same | |
| US11831047B2 (en) | Membrane humidifier for fuel cell, and fuel cell system comprising same | |
| US20090130533A1 (en) | Fuel cell | |
| US9112219B2 (en) | Multiple stack fuel cell system with shared plenum | |
| US8617756B2 (en) | Fuel cell stack | |
| US8071045B2 (en) | Reformer | |
| US20110132477A1 (en) | Fluid flow plate assembly having parallel flow channels | |
| CN114420965A (en) | Gas inlet and outlet gas distribution box of fuel cell stack | |
| US20060014056A1 (en) | Reformer and fuel cell system having the same | |
| JP2007511045A (en) | Integrated bipolar plate with spring seal | |
| US20150072258A1 (en) | Fuel cell stack | |
| JP2002343410A (en) | Manifold for fuel cell | |
| CN216450691U (en) | Electric pile gas distribution platform of solid oxide fuel cell power generation system | |
| CN114094142A (en) | Multi-stack module gas distribution platform of solid oxide fuel cell power generation system | |
| JP4772064B2 (en) | Fuel cell bipolar plate with multiple active regions separated by non-conductive frame header | |
| JP2023516726A (en) | Kit for fuel cell stack and method for manufacturing fuel cell stack | |
| JP5228342B2 (en) | Fuel reformer and fuel cell | |
| CN219393433U (en) | Fuel cell and fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220429 |
|
| WW01 | Invention patent application withdrawn after publication |