CN116759605A - Modularized fuel cell unit - Google Patents
Modularized fuel cell unit Download PDFInfo
- Publication number
- CN116759605A CN116759605A CN202310682538.4A CN202310682538A CN116759605A CN 116759605 A CN116759605 A CN 116759605A CN 202310682538 A CN202310682538 A CN 202310682538A CN 116759605 A CN116759605 A CN 116759605A
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- plate
- modular
- circuit board
- end plate
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 66
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 28
- 239000004917 carbon fiber Substances 0.000 claims abstract description 28
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000007789 gas Substances 0.000 claims description 26
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 239000001257 hydrogen Substances 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Fuel Cell (AREA)
Abstract
The invention discloses a modularized fuel cell unit, which relates to the technical field of fuel cells and comprises a circuit board current collecting plate, a commercial membrane electrode and a carbon fiber end plate, wherein the commercial membrane electrode is arranged between the upper layer of current collecting plate and the lower layer of current collecting plate, and the carbon fiber end plate is arranged outside the circuit board current collecting plate; the upper carbon fiber plate, the upper circuit board current collecting plate, the commercial membrane electrode, the lower circuit board current collecting plate and the lower carbon fiber plate are sequentially fixed through bolts and nuts. Comprises a fuel cell unit, a fan mounting plate and an upper end plate and a lower end plate; the modularized fuel cell units can be combined into a planar self-breathing type electric pile for use, and can also be combined into a forced convection type fuel cell electric pile for use by means of an upper end plate, a lower end plate and a fan; the plurality of modularized fuel battery units obtain different voltages and currents through serial-parallel connection, and are convenient to carry and match with the required voltages and currents.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a modularized fuel cell unit.
Background
Proton exchange membrane fuel cells have higher energy density and lower emission than conventional lithium cells, but current stacks are mainly fuel cells stacked by single cells using bipolar plates, and have the disadvantages of fixed size, larger volume, inconvenient carrying and fixed output voltage and current.
Disclosure of Invention
The invention aims to provide a modularized fuel cell unit, which realizes the output of different voltage and current by connecting a plurality of proton exchange membrane fuel cell units, obtains different sizes and is convenient to carry.
The invention solves the technical problems by adopting the following technical scheme:
a modular fuel cell system comprising an upper carbon fiber sheet, an upper circuit board current collector, a commercial membrane electrode, a lower circuit board current collector, and a lower carbon fiber sheet; the upper carbon fiber plate, the upper circuit board current collecting plate, the commercial membrane electrode, the lower circuit board current collecting plate and the lower carbon fiber plate are sequentially arranged from one end to the other end; the carbon fiber plate is arranged outside the circuit board current collecting plate, and the commercial membrane electrode is arranged between the upper circuit board current collecting plate and the lower circuit board current collecting plate.
Further, the commercial membrane electrode comprises a proton exchange membrane and catalyst layers on both sides.
Further, the upper and lower carbon fiber plates serve as gas flow channels to supply hydrogen and air, respectively, to the commercial membrane electrode.
Further, the upper and lower circuit board current collecting plates are connected to the anode and cathode of the commercial membrane electrode, respectively, as electrodes, to collect and output current.
Further, the system comprises a plurality of modular proton exchange membrane fuel cell units according to any one of claims 1-4.
Further, the plurality of modularized proton exchange membrane fuel cell units are connected in series through the conductive studs and the conductive nuts to form a whole body to form a modularized fuel cell system.
Further, the system also comprises an upper end plate, a lower end plate, a side plate, a fan, a gas conduit and the like; the upper end plate and the lower end plate are fixed at two ends of the modularized proton exchange membrane fuel cell units through locking bolts and locking nuts to form a closed space; the side plates are connected to two sides of the upper end plate and the lower end plate to form a channel; the fans are connected to the rear sides of the upper end plate and the lower end plate and are used for forcing convection air into the channels and respectively conveying the convection air to the cathode sides of the modularized proton exchange membrane fuel cell units through the gas conduits; hydrogen is delivered to the anode side of each modular proton exchange membrane fuel cell unit separately via another gas conduit.
Further, the plurality of modularized proton exchange membrane fuel cell units are connected in parallel through connecting wires to form a planar structure.
Further, the system also comprises a gas conduit and the like; wherein the anode side of each modular proton exchange membrane fuel cell unit is connected with a common hydrogen source through a gas conduit, and the cathode side of each modular proton exchange membrane fuel cell unit sucks air through a natural convection mode.
The beneficial effects are that:
1. according to the invention, a plurality of modularized units are connected, so that different structures and output characteristics can be realized, and the requirements of different occasions and equipment are met;
2. according to the invention, the carbon fiber plate is used as a gas flow passage, so that the weight and the volume of the system can be reduced, and the efficiency of the system can be improved;
3. the invention can reduce the manufacturing cost and the difficulty and improve the reliability of the system by using the commercial membrane electrode as a core component;
4. the invention can increase the flexibility and adaptability of the system by using the fan to perform self-breathing in a forced convection or natural convection mode.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic view of a fuel cell unit of the present invention;
FIG. 2 is a schematic diagram of a forced convection structure according to the present invention;
FIG. 3 is a schematic diagram of a self-breathing structure according to the present invention;
wherein, 1-the modular unit locking bolt; 2-carbon fiber plate; 3-upper circuit board current collecting plate; 4-commercial membrane electrode; 5-a lower circuit board current collecting plate; 6-lower carbon fiber board; 7-a modular unit lock nut; 8-a conductive nut; 9-locking the nut; 10-an upper end plate; 11-modular units; 12-conductive studs; 13-side plates; 14-a fan; 15-a lower end plate; 16-locking bolts; 17-a gas conduit; 18-conductive screws; 19-connecting wires.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1: referring to fig. 1-3, the invention discloses a modularized fuel cell unit, the modularized fuel cell unit comprises an upper carbon fiber plate 2, an upper circuit board current collecting plate 3, a commercial membrane electrode 4, a lower circuit board current collecting plate 5 and a lower carbon fiber plate 6, wherein the carbon fiber plate 2 and the lower carbon fiber plate 6 are arranged outside the circuit board current collecting plates 3 and 5, and the commercial membrane electrode 4 is arranged between the upper circuit board current collecting plate 3 and the lower circuit board current collecting plate 5; the modularized fuel cell unit 11 can be combined into a self-breathing planar structure and a forced convection type structure; the self-breathing structure comprises a fuel cell unit 11, a gas conduit 17 and a connecting wire 19; the forced convection type structure comprises an upper end plate 10, a conductive stud 12, a conductive nut 8, a gas conduit 17, a plurality of fuel cell units 11 and a lower end plate 15; the invention also comprises a fan 14, said fan 14 being connected to the rear side of said upper end plate 10 and said lower end plate 15. The fan 14 is provided for radiating heat from the fuel cell stack.
The upper carbon fiber end plate 2 and the lower carbon fiber plate 6 can be used as a gas flow passage with a forced convection structural formula.
The forced convection structure of the present invention further comprises two side plates 13, and the two side plates 13 are connected to both sides of the upper end plate 10 and the lower end plate 15.
The forced convection structure of the present invention further includes a fan 14, and the fan 14 is connected to the rear sides of the upper and lower end plates 10 and 15.
The forced convection structure of the invention further comprises a locking bolt 16, wherein the bolt 16 sequentially penetrates through the upper end plate 10 and the lower end plate 15 and is locked and fixed through a locking nut 9.
The forced convection structure of the invention further comprises a conductive stud 12, wherein the conductive stud 12 sequentially penetrates through the plurality of fuel cell units 11 and is locked and fixed through the conductive nut 8.
The forced convection structure of the present invention further includes a gas duct 17, and the gas duct 17 is connected to the plurality of fuel cell units 11 in sequence.
The self-breathing structure of the present invention further comprises a connecting lead 19 and a gas conduit 17, said gas conduit 17 and connecting lead 19 connecting a plurality of fuel cell units.
The plurality of fuel cell units 11 of the present invention can obtain different voltages and currents in series-parallel connection.
The invention provides a modularized fuel cell unit which realizes different current and voltage outputs through different combinations, can be changed into a forced convection mode by matching with a fan to improve the output capacity, and is convenient to carry in a modularized form.
Example 2: a modular fuel cell system is shown in figure 1. The modular unit comprises an upper carbon fiber plate 2, an upper circuit board current collector 3, a commercial membrane electrode 4, a lower circuit board current collector 5 and a lower carbon fiber plate 6. The upper carbon fiber plate 2 and the lower carbon fiber plate 6 serve as gas flow passages to supply hydrogen gas and air, respectively, to the commercial membrane electrode 4. The upper circuit board current collecting plate 3 and the lower circuit board current collecting plate 5 are connected with the anode and the cathode of the commercial membrane electrode 4 respectively as electrodes to collect and output current. The commercial membrane electrode 4 is a core component of a proton exchange membrane fuel cell, wherein the proton exchange membrane is a solid polymer membrane, two sides of the proton exchange membrane are coated with catalyst layers, and oxidation-reduction reaction is carried out by utilizing hydrogen and air to generate electric energy and water.
The modular unit may be connected to other modular units to form different structures and output characteristics.
Example 3: as shown in fig. 2, a forced convection type structure includes an upper end plate 10, conductive studs 12, conductive nuts 8, gas ducts 17, a plurality of fuel cell units 11, a lower end plate 15, side plates 13, fans 14, and the like. The plurality of fuel cell units 11 are connected in series by the conductive studs 12 and the conductive nuts 8 to form a single body. The upper end plate 10 and the lower end plate 15 are fixed at both ends by locking bolts 16 and locking nuts 9, and the side plates 13 are connected to both sides of the upper end plate 10 and the lower end plate 15 to form a closed space. A fan 14 is attached to the rear sides of the upper and lower end plates 10 and 15 for forcing convection air into the channels. Hydrogen is supplied to the anode side of each fuel cell unit 11 through a gas conduit 17, respectively. This structure can improve the air supply efficiency and increase the output power of the fuel cell unit 11.
Example 4: as shown in fig. 3, a self-breathing structure includes a plurality of fuel cell units 11, connecting leads 19, gas ducts 17, and the like. The plurality of fuel cell units 11 are connected in parallel or in series by connecting wires 19 to form a planar structure. The anode side of each fuel cell unit 11 is connected to a common hydrogen source through a gas conduit 17, and the cathode side of each fuel cell unit 11 draws in air by natural convection. The structure can be flexibly matched with the output voltage of the fuel cell units 11, the complexity of the system is reduced, and meanwhile, the hydrogen utilization rate of a plurality of fuel cell units 11 is better than that of an integral battery by utilizing the self-diffusivity of hydrogen.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular 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 invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. A modular fuel cell unit comprising an upper carbon fiber sheet, an upper circuit board current collector, a commercial membrane electrode, a lower circuit board current collector, and a lower carbon fiber sheet; the upper carbon fiber plate, the upper circuit board current collecting plate, the commercial membrane electrode, the lower circuit board current collecting plate and the lower carbon fiber plate are sequentially arranged from one end to the other end; the carbon fiber plate is arranged outside the circuit board current collecting plate, and the commercial membrane electrode is arranged between the upper circuit board current collecting plate and the lower circuit board current collecting plate.
2. A modular fuel cell unit as claimed in claim 1, wherein the commercial membrane electrode comprises a proton exchange membrane and catalyst layers on both sides.
3. A modular fuel cell unit as claimed in claim 1, wherein the upper and lower carbon fibre plates act as gas flow channels to provide hydrogen and air respectively to the commercial membrane electrode.
4. A modular fuel cell unit as claimed in any one of claims 1 to 3 wherein the upper and lower circuit board current collector plates are connected as electrodes to the anode and cathode of the commercial membrane electrode respectively to collect and output current.
5. A modular fuel cell system comprising a plurality of modular proton exchange membrane fuel cell units according to any one of claims 1-4.
6. A modular fuel cell system as claimed in claim 5, wherein the plurality of modular proton exchange membrane fuel cells are connected in series by conductive studs and nuts to form a single unit.
7. A modular fuel cell system as claimed in claim 6, further comprising upper end plate, lower end plate, side plates, fans, gas ducts, etc.; the upper end plate and the lower end plate are fixed at two ends of the modularized proton exchange membrane fuel cell units through locking bolts and locking nuts to form a closed space; the side plates are connected to two sides of the upper end plate and the lower end plate to form a channel; the fans are connected to the rear sides of the upper end plate and the lower end plate and are used for forcing convection air into the channels and respectively conveying the convection air to the cathode sides of the modularized proton exchange membrane fuel cell units through the gas conduits; hydrogen is delivered to the anode side of each modular proton exchange membrane fuel cell unit separately via another gas conduit.
8. A modular fuel cell system as claimed in claim 5, wherein the plurality of modular proton exchange membrane fuel cells are connected in parallel by connecting wires to form a planar structure.
9. A modular fuel cell system as claimed in claim 8, further comprising gas conduits and the like; wherein the anode side of each modular proton exchange membrane fuel cell unit is connected with a common hydrogen source through a gas conduit, and the cathode side of each modular proton exchange membrane fuel cell unit sucks air through a natural convection mode.
10. A modular fuel cell system as claimed in claim 6 or 8, wherein the system comprises a BMS control module which regulates cell voltage by controlling the flow and pressure of hydrogen and air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310682538.4A CN116759605A (en) | 2023-06-09 | 2023-06-09 | Modularized fuel cell unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310682538.4A CN116759605A (en) | 2023-06-09 | 2023-06-09 | Modularized fuel cell unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116759605A true CN116759605A (en) | 2023-09-15 |
Family
ID=87948989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310682538.4A Pending CN116759605A (en) | 2023-06-09 | 2023-06-09 | Modularized fuel cell unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116759605A (en) |
-
2023
- 2023-06-09 CN CN202310682538.4A patent/CN116759605A/en active Pending
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