CN112838235A - Hydrogen fuel cell stick structure - Google Patents
Hydrogen fuel cell stick structure Download PDFInfo
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- CN112838235A CN112838235A CN202011629354.4A CN202011629354A CN112838235A CN 112838235 A CN112838235 A CN 112838235A CN 202011629354 A CN202011629354 A CN 202011629354A CN 112838235 A CN112838235 A CN 112838235A
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- plate
- hydrogen
- oxygen
- cavity
- gas port
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- 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
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
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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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- 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 provides a hydrogen fuel cell rod structure, which comprises a circular tube, a blind end current collecting plate, a plurality of monocells, a gas port end current collecting plate, a blind end plate and a gas port end plate, wherein the blind end current collecting plate, the monocells, the gas port end current collecting plate and the blind end plate and the gas port end plate are sequentially packaged in the circular tube; the blind end collector plate, the monocell, the gas port end collector plate, the blind end plate and the gas port end plate are all round; the monocell comprises a circular bipolar plate and a circular membrane electrode; the outer edge part of the bipolar plate is provided with a group of hydrogen cavity inlets and hydrogen cavity outlets, at least one group of oxygen cavity inlets and oxygen cavity outlets and a group of cooling cavity inlets and cooling cavity outlets, which axially penetrate through the bipolar plate, and the inlets and outlets in each group are symmetrically arranged around the center of the axis of the bipolar plate; the bipolar plate comprises an oxygen unipolar plate and a hydrogen unipolar plate which are fixedly attached together. The technical scheme of the invention solves the problem of low space utilization rate of the circular fuel cell in the prior art.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a hydrogen fuel cell rod structure.
Background
In the prior art, the circular FUEL CELL has low space utilization rate, such as the ROUND FUEL CELL (JP06104003A), a circular FUEL CELL structure is proposed to improve the volume efficiency, but the patent arranges three cavities of inlets and outlets outside a circular bipolar plate, and the structure is not compact enough.
Disclosure of Invention
According to the technical problem of low space utilization rate of the conventional circular fuel cell, the rod structure of the hydrogen fuel cell is provided.
The technical means adopted by the invention are as follows:
a hydrogen fuel cell rod structure comprises a circular tube, a blind end current collecting plate, a plurality of monocells, a gas port end current collecting plate, a blind end plate and a gas port end plate, wherein the blind end current collecting plate, the monocells, the gas port end current collecting plate and the blind end plate and the gas port end plate are sequentially packaged in the circular tube; the blind end collector plate, the monocell, the gas port end collector plate, the blind end plate and the gas port end plate are all round; the monocells comprise circular bipolar plates and circular membrane electrodes, and the monocells are sequentially connected in series;
the outer edge part of the bipolar plate is provided with a group of hydrogen cavity inlets and hydrogen cavity outlets, at least one group of oxygen cavity inlets and oxygen cavity outlets and a group of cooling cavity inlets and cooling cavity outlets, which axially penetrate through the bipolar plate, and the inlets and outlets in each group are symmetrically arranged around the center of the axis of the bipolar plate; the bipolar plate comprises an oxygen unipolar plate and a hydrogen unipolar plate which are fixedly attached together;
the side of the hydrogen unipolar plate, which is far away from the oxygen unipolar plate, is provided with a hydrogen flow field arranged in the middle of the hydrogen unipolar plate, and the hydrogen flow field is respectively communicated with the hydrogen cavity inlet and the hydrogen cavity outlet;
an oxygen flow field arranged in the middle of the oxygen unipolar plate is arranged on one side of the oxygen unipolar plate, which is far away from the hydrogen unipolar plate, and the oxygen flow field is respectively communicated with the oxygen cavity inlet and the oxygen cavity outlet;
one side of the oxygen unipolar plate, which is close to the hydrogen unipolar plate, is provided with a coolant flow field arranged in the middle of the oxygen unipolar plate, and the coolant flow field is respectively communicated with the inlet of the cooling cavity and the outlet of the cooling cavity;
the gas port end plate and the membrane electrode are provided with openings corresponding to the hydrogen cavity inlet, the hydrogen cavity outlet, the oxygen cavity inlet, the oxygen cavity outlet, the cooling cavity inlet and the cooling cavity outlet respectively.
And the oxygen cavity comprises two groups of oxygen cavity inlets and two groups of oxygen cavity outlets, the oxygen cavity inlets are communicated through an external pipeline, and the oxygen cavity outlets are communicated through an external pipeline.
Furthermore, the blind end plate and the gas port end plate are fixed on two sides of the circular tube through bolts or welding.
Further, the hydrogen unipolar plate and the oxygen unipolar plate are bonded and fixed through glue.
Furthermore, the blind end plate and the round pipe are made of insulating materials.
Furthermore, the blind end collector plate and the gas port end collector plate are both made of pure copper materials.
Furthermore, the bipolar plate, the membrane electrode, the gas port end collector plate and the gas port end plate are provided with positioning holes, and axial positioning is carried out through a circular shaft inserted into the positioning holes.
Compared with the prior art, the invention has the following advantages:
according to the hydrogen fuel cell rod structure provided by the invention, the three-cavity inlet and outlet are arranged in the circular bipolar plate, the overall structure is compact, the hydrogen fuel cell rod structure can be arranged in a long and narrow device space, and the space utilization rate of the device is greatly improved.
For the above reasons, the present invention can be widely applied to the field of fuel cells.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of a hydrogen fuel cell rod according to the present invention.
Fig. 2 is a schematic structural view of the circular bipolar plate of the present invention.
In the figure: 1. a blind end plate; 2. a blind end collector plate; 3. a bipolar plate; 4. a membrane electrode; 5. a circular tube; 6. a gas port end collector plate; 7. a gas port end plate; 8. a cooling chamber inlet; 9. an oxygen cavity outlet I; 10. a hydrogen chamber inlet; 11. an oxygen chamber outlet II; 12. a cooling chamber outlet; 13. an oxygen chamber inlet II; 14. a hydrogen chamber outlet; 15. oxygen chamber entry I.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
Example 1
As shown in fig. 1-2, the present invention provides a hydrogen fuel cell rod structure, which comprises a circular tube 5, a blind end current collecting plate 2, a plurality of single cells, a gas port current collecting plate 6, and a blind end plate 1 and a gas port end plate 7, wherein the blind end current collecting plate 2, the single cells, the gas port current collecting plate 6, the blind end plate 1 and the gas port end plate 7 are sequentially packaged in the circular tube, and the blind end plate 1 and the gas port end plate 7 are fixed at two ends of the circular tube 5 in a press fit manner through pretightening force; the blind end collector plate 2, the monocell, the gas port collector plate 6, the blind end plate 1 and the gas port end plate 7 are all circular; the monocells comprise circular bipolar plates 3 and circular membrane electrodes 4, and the monocells are sequentially connected in series;
the outer edge part of the bipolar plate 3 is provided with a group of hydrogen cavity inlets 10 and hydrogen cavity outlets 14, at least one group of oxygen cavity inlets and oxygen cavity outlets, and a group of cooling cavity inlets 8 and cooling cavity outlets 12 which axially penetrate through the bipolar plate 3, and the inlets and outlets in each group are symmetrically arranged around the axial center of the bipolar plate 3; the bipolar plate 3 comprises an oxygen unipolar plate and a hydrogen unipolar plate which are fixedly attached together;
a hydrogen flow field arranged in the middle of the hydrogen unipolar plate is arranged on one side of the hydrogen unipolar plate, which is far away from the oxygen unipolar plate, and the hydrogen flow field is respectively communicated with the hydrogen cavity inlet 10 and the hydrogen cavity outlet 14;
an oxygen flow field arranged in the middle of the oxygen unipolar plate is arranged on one side of the oxygen unipolar plate, which is far away from the hydrogen unipolar plate, and the oxygen flow field is respectively communicated with the oxygen cavity inlet and the oxygen cavity outlet;
one side of the oxygen unipolar plate, which is close to the hydrogen unipolar plate, is provided with a coolant flow field arranged in the middle of the oxygen unipolar plate, and the coolant flow field is respectively communicated with the cooling cavity inlet 8 and the cooling cavity outlet 12;
the gas port end plate 7 and the membrane electrode 4 are provided with openings corresponding to the hydrogen cavity inlet 10, the hydrogen cavity outlet 14, the oxygen cavity inlet, the oxygen cavity outlet, the cooling cavity inlet 8 and the cooling cavity outlet 12, respectively, and are used for supplying and outputting hydrogen, oxygen and coolant.
Further, the oxygen cavity inlet and the oxygen cavity outlet are respectively an oxygen cavity inlet I15, an oxygen cavity outlet I9, an oxygen cavity inlet II 13 and an oxygen cavity outlet II 11, the oxygen cavity inlets are communicated through external pipelines, and the oxygen cavity outlets are communicated through external pipelines.
Further, the blind end plate 1 and the gas port end plate 7 are fixed on two sides of the circular tube 5 through bolts or welding.
Further, the hydrogen unipolar plate and the oxygen unipolar plate are bonded and fixed through glue.
Further, the blind end plate 1 and the round tube 5 are made of insulating materials.
Further, the blind end collector plate 2 and the gas port end collector plate 6 are both made of pure copper materials.
Furthermore, the bipolar plate 3, the membrane electrode 4, the gas port end collector plate 6 and the gas port end plate 7 are all provided with positioning holes, and are axially positioned through circular shafts inserted into the positioning holes.
Further, one of the oxygen chamber outlets is disposed between the cooling chamber inlet and the hydrogen chamber inlet, and the other of the oxygen chamber outlets is disposed between the hydrogen chamber inlet and the cooling chamber outlet.
Further, the hydrogen flow field, the oxygen flow field, and the coolant flow field are all direct flow fields.
Furthermore, the hydrogen flow field, the oxygen flow field and the coolant flow field all comprise circular grooves and a plurality of rib plates which are fixed in the circular grooves and arranged in parallel, and straight flow channels are formed between two adjacent rib plates.
Further, the hydrogen unipolar plate and the oxygen unipolar plate are manufactured by machining or molding a graphite plate.
Further, the medium flowing in the hydrogen flow field is hydrogen, the medium flowing in the oxygen flow field is air or oxygen, and the medium flowing in the coolant flow field is deionized water.
By adopting the hydrogen fuel cell rod structure, the length of the hydrogen fuel cell rod structure can be set by changing the number of single cell sections and the length of a cylinder according to needs, and the hydrogen fuel cell rod structure can be suitable for layout in narrow spaces with different lengths; if the length of 2 sections of fuel cell rods is a, the thickness of the bipolar plate 3 in a single fuel cell rod is b, and the thickness of the membrane electrode 4 is c, the length of n sections of fuel cells is a + (b + c) (n-2), and the length of the circular tube 5 is correspondingly increased.
Furthermore, the blind end plate 1 can be connected with the circular tube 5 through bolts, the number of the connecting bolts can be 4 or 8, and the connecting mode is not limited to bolt connection, and the blind end plate and the circular tube can be rigidly connected through welding.
Further, the sizes and shapes of the openings of the gas port collector plate 6 and the membrane electrode 4 correspond to and are completely consistent with those of the openings on the bipolar plate 3.
Further, the openings on the bipolar plate 3 may change the positions or the number of the gas inlet/outlet channels according to the flow field condition, and is not limited to the layout mode of setting the oxygen chamber flow field of the bipolar plate 3 to 2 inlets and 2 outlets in this embodiment.
According to the hydrogen fuel cell rod structure provided by the invention, the three-cavity inlet and outlet are arranged in the circular bipolar plate, the overall structure is compact, the hydrogen fuel cell rod structure can be arranged in a long and narrow device space, and the space utilization rate of the device is greatly improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A hydrogen fuel cell rod structure is characterized by comprising a circular tube, a blind end current collecting plate, a plurality of monocells, a gas port end current collecting plate, a blind end plate and a gas port end plate, wherein the blind end current collecting plate, the monocells, the gas port end current collecting plate and the blind end plate and the gas port end plate are sequentially packaged in the circular tube; the blind end collector plate, the monocell, the gas port end collector plate, the blind end plate and the gas port end plate are all round; the monocells comprise circular bipolar plates and circular membrane electrodes, and the monocells are sequentially connected in series;
the outer edge part of the bipolar plate is provided with a group of hydrogen cavity inlets and hydrogen cavity outlets, at least one group of oxygen cavity inlets and oxygen cavity outlets and a group of cooling cavity inlets and cooling cavity outlets, which axially penetrate through the bipolar plate, and the inlets and outlets in each group are symmetrically arranged around the center of the axis of the bipolar plate; the bipolar plate comprises an oxygen unipolar plate and a hydrogen unipolar plate which are fixedly attached together;
the side of the hydrogen unipolar plate, which is far away from the oxygen unipolar plate, is provided with a hydrogen flow field arranged in the middle of the hydrogen unipolar plate, and the hydrogen flow field is respectively communicated with the hydrogen cavity inlet and the hydrogen cavity outlet;
an oxygen flow field arranged in the middle of the oxygen unipolar plate is arranged on one side of the oxygen unipolar plate, which is far away from the hydrogen unipolar plate, and the oxygen flow field is respectively communicated with the oxygen cavity inlet and the oxygen cavity outlet;
one side of the oxygen unipolar plate, which is close to the hydrogen unipolar plate, is provided with a coolant flow field arranged in the middle of the oxygen unipolar plate, and the coolant flow field is respectively communicated with the inlet of the cooling cavity and the outlet of the cooling cavity;
the gas port end plate and the membrane electrode are provided with openings corresponding to the hydrogen cavity inlet, the hydrogen cavity outlet, the oxygen cavity inlet, the oxygen cavity outlet, the cooling cavity inlet and the cooling cavity outlet respectively.
2. The hydrogen fuel cell rod structure according to claim 1, comprising two sets of the oxygen chamber inlets and the oxygen chamber outlets, and wherein the two oxygen chamber inlets are communicated by an external pipe and the two oxygen chamber outlets are communicated by an external pipe.
3. The hydrogen fuel cell rod structure according to claim 1, wherein the blind end plate and the gas port end plate are fixed to both sides of the circular tube by bolts or welding.
4. The hydrogen fuel cell rod structure of claim 1 wherein the hydrogen unipolar plate and the oxygen unipolar plate are secured by glue bonding.
5. The hydrogen fuel cell rod structure of claim 1 wherein the blind end plate and the round tube are made of an insulating material.
6. The hydrogen fuel cell rod structure of claim 1 wherein said blind end collector plate and said gas port end collector plate are both made of pure copper material.
7. The hydrogen fuel cell rod structure according to claim 1, wherein the bipolar plate, the membrane electrode, the gas port end collector plate, and the gas port end plate are each provided with a positioning hole, and are axially positioned by a circular shaft inserted into the positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629354.4A CN112838235B (en) | 2020-12-31 | 2020-12-31 | Hydrogen fuel cell stick structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011629354.4A CN112838235B (en) | 2020-12-31 | 2020-12-31 | Hydrogen fuel cell stick structure |
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| CN112838235A true CN112838235A (en) | 2021-05-25 |
| CN112838235B CN112838235B (en) | 2022-11-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0412460A (en) * | 1990-04-28 | 1992-01-17 | Tonen Corp | High-temperature fuel cell |
| JP2005353495A (en) * | 2004-06-11 | 2005-12-22 | Toyota Motor Corp | Cell module and fuel cell |
| CN102104150A (en) * | 2011-01-18 | 2011-06-22 | 浙江工业大学 | Bipolar plate with mosquito incense type flow field distribution structure |
| CN103441285A (en) * | 2013-09-06 | 2013-12-11 | 江苏艾维佳新能源科技有限公司 | Circular fuel cell bipolar plate |
| CN109326804A (en) * | 2018-10-31 | 2019-02-12 | 山东潍氢动力科技有限公司 | Air-cooled fuel cell power generating system and air-cooled fuel cell pack |
| CN111193044A (en) * | 2019-10-31 | 2020-05-22 | 清华大学 | Passive liquid fuel cell |
-
2020
- 2020-12-31 CN CN202011629354.4A patent/CN112838235B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0412460A (en) * | 1990-04-28 | 1992-01-17 | Tonen Corp | High-temperature fuel cell |
| JP2005353495A (en) * | 2004-06-11 | 2005-12-22 | Toyota Motor Corp | Cell module and fuel cell |
| CN102104150A (en) * | 2011-01-18 | 2011-06-22 | 浙江工业大学 | Bipolar plate with mosquito incense type flow field distribution structure |
| CN103441285A (en) * | 2013-09-06 | 2013-12-11 | 江苏艾维佳新能源科技有限公司 | Circular fuel cell bipolar plate |
| CN109326804A (en) * | 2018-10-31 | 2019-02-12 | 山东潍氢动力科技有限公司 | Air-cooled fuel cell power generating system and air-cooled fuel cell pack |
| CN111193044A (en) * | 2019-10-31 | 2020-05-22 | 清华大学 | Passive liquid fuel cell |
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| Publication number | Publication date |
|---|---|
| CN112838235B (en) | 2022-11-08 |
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