CN100570942C - Fuel cell modular structure - Google Patents
Fuel cell modular structure Download PDFInfo
- Publication number
- CN100570942C CN100570942C CNB2007101492709A CN200710149270A CN100570942C CN 100570942 C CN100570942 C CN 100570942C CN B2007101492709 A CNB2007101492709 A CN B2007101492709A CN 200710149270 A CN200710149270 A CN 200710149270A CN 100570942 C CN100570942 C CN 100570942C
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- Prior art keywords
- fuel cell
- cell module
- plate
- anode
- exchange membrane
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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
Abstract
The invention provides a kind of fuel cell module, include an anode flow channel plate; One minus plate; Stick together material in the middle of one; One mea includes a proton exchange membrane; And a leakproof adhesion layer, paste on this proton exchange membrane, avoid this centre to stick together material and contact with this proton exchange membrane; Wherein, it is that stacking pressing is folded between this anode flow channel plate and this minus plate that material, this mea and this leakproof adhesion layer are sticked together in this centre, and the tackifying ability of this leakproof adhesion layer and this proton exchange membrane, and it is good sticking together material than this centre.
Description
Technical field
The invention relates to fuel cell,, can prevent methyl alcohol leakage problem really particularly relevant for a kind of plate direct methanol fuel cell modular structure.
Background technology
As have the knack of known to the person of this field, direct methanol fuel cell (Direct Methanol Fuel Cell abbreviates DMFC as) is that a kind of methyl alcohol that utilizes acts as a fuel, and chemical energy is converted to the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of electric power by electrochemical program.Compare with traditional generation mode, direct methanol fuel cell has low pollution, low noise, high-energy-density and higher advantages such as energy conversion efficiency, be forward-looking clean energy, applicable field comprises household system, UPS, electronic product, means of transportation, military equipment, space industry etc.
The operation principles of direct methanol fuel cell is to carry out oxidation reaction with methanol aqueous solution at the anode catalyst layer, produces hydrogen ion (H
+), electronics (e
-) and carbon dioxide (CO
2), wherein hydrogen ion is passed to negative electrode via electrolyte, and electronics then is passed to negative electrode via external circuit, and the oxygen that supply with cathode terminal this moment can carry out reduction reaction at the cathode catalysts layer with hydrogen ion and electronics, and produces water.Fuel cell generally all is made up of several elementary cells.Because the voltage that each elementary cell can provide is very little, a plurality of elementary cells of therefore must connecting when using are to reach the output of necessary operations voltage.
In the modular structure of direct methanol fuel cell assembly, collector plate and runner plate have been generally included, playing the part of different important roles respectively, wherein collector plate is responsible for collecting the electronics that electrochemical reaction produces, and runner plate then is to be responsible for distribution and the control that fuel flows.The part of runner plate mainly focuses on the design of runner, makes fuel can pass through runner smoothly, and the inflow mea (membrane electrodeassembly, MEA).
Present plate direct methanol fuel cell has been developed to the ripe practical stage, has higher operation usefulness and better reliability degree compared to the past fuel cell.Yet the plate direct methanol fuel cell module still has some shortcomings and need further overcome and improve.
Summary of the invention
Main purpose of the present invention is providing a kind of fuel cell module of improvement, can prevent methyl alcohol leakage problem really, to promote the fail safe of battery module.
The invention provides a kind of fuel cell module, include an anode flow channel plate, comprise at least one positive plate, wherein this positive plate comprises an anode-supported substrate, and it has the formed wire line of the printed circuit board technology of use; And at least one anode collector plate, wherein this anode collector plate is fixed on this anode-supported substrate, and with this wire line electrical links; One runner plate is in order to fueling and product circulation; And at least one material that sticks together, its two sides contacts with this runner plate with this positive plate respectively; At least one minus plate comprises a base material, at least one negative electrode current collection zone and a plurality of perforation, and wherein this negative electrode current collection zone is covered in the tow sides of this base material, is densely covered with a plurality of perforation in it; One mea includes at least one proton exchange membrane; Stick together material in the middle of one, stick together material or epoxy resin as prepreg, it has a corresponding opening, in order to ccontaining this mea; And at least one leakproof adhesion layer, as comprise that PU is that adhesion material and silica gel (silicone) are resin, paste on this proton exchange membrane, between this anode flow channel plate and this proton exchange membrane, avoiding this centre to stick together material contacts with this proton exchange membrane, wherein, material is sticked together in this centre, this mea and the stacking pressing of this leakproof adhesion layer are folded between this anode flow channel plate and this minus plate, and this centre is sticked together material and is had a corresponding opening, be used for ccontaining this mea, and the two sides that makes this mea contacts with negative electrode current collection zone on this minus plate with this anode flow channel plate respectively.The tackifying ability of this leakproof adhesion layer and this proton exchange membrane, it is good sticking together material than this centre.
Your, see also following about detailed description of the present invention and accompanying drawing in order to make juror can further understand feature of the present invention and technology contents.Yet accompanying drawing only for reference with aid illustration usefulness, be not to be used for to the present invention's limitr in addition.
Description of drawings
What Fig. 1 illustrated is the exploded perspective view of preferred embodiment fuel cell module of the present invention.
That Fig. 2 illustrates is the upright figure of group of fuel cell module among Fig. 1.
Fig. 3 is the front schematic view of anode runner plate among Fig. 1.
Fig. 4 is the explosive view of anode runner plate among Fig. 1.
Fig. 5 is the generalized section of collector plate of the present invention.
Drawing reference numeral:
1 fuel cell module, 10 anode flow channel plates
Stick together material in the middle of 12 minus plate 14a, the b
16 mea 18a, b leakproof adhesion layer
100 anode-supported substrates, 101 positive plates
102 runner plate 110a, b anode collector plate
112a, b metallic laminas 114a, b conducting wire
116 proton exchange membrane 120a, b negative electrode current collection zone
201 collector plate grounds, 202 conductive layers
240 stick together material
Embodiment
Present plate direct methanol fuel cell has been developed to the ripe practical stage, and has higher operation usefulness and better reliability degree compared to the past fuel cell.Yet, the plate direct methanol fuel cell module still has some shortcomings and need further overcome and improve, for example, the engaging force that sticks together between material and the mea (MEA) in the middle of the prepreg is not good, cause delamination (delamination) phenomenon, and cause the irritating methyl alcohol phenomenon of leakage, this methyl alcohol leakage now mainly to occur in end near MEA.
In addition, in practical application, find, the methyl alcohol leakage also may occur near anode collector plate end, it spills via collector plate and its interface of sticking together between the material on every side, this mainly is because the stress that the stubborn folding of collector plate ear is caused, it is bad to cause sticking together effect, adds in the process of thermal shock experiment, and the rising-heat contracting-cold of metal causes due to the interface damage of sticking together between material and collector plate.
Above-mentioned thermal shock experiment is the safety passerby that Valuation Standard is advanced who issues at the safety and the performance of fuel cell module according to the international electrical equipment committee (IEC).
See also Fig. 1 and Fig. 2, what wherein Fig. 1 illustrated is the exploded perspective view of preferred embodiment fuel cell module 1 of the present invention, and that Fig. 2 illustrates is the upright figure of group (fuel cell with 2W is an example) of fuel cell module 1 among Fig. 1.As shown in Figures 1 and 2, preferred embodiment fuel cell module 1 of the present invention consists predominantly of anode flow channel plate 10, minus plate (ingress of air) 12, centre and sticks together material 14a and 14b, mea (MEA) 16 and leakproof adhesion layer 18a and 18b, storehouse assembles, wherein, anode flow channel plate 10 is integrated positive plate 101 and is formed (there is clearly description the detailed structure back) with runner plate 102.
The centre is sticked together material 14a and 14b, mea (MEA) 16 and leakproof adhesion layer 18a and the stacking pressing of 18b and is folded between anode flow channel plate 10 and the minus plate 12, and material 14a is sticked together in the centre and 14b has corresponding opening respectively, be used for ccontaining mea 16, and the two sides that makes mea 16 contacts with anode collector plate 110a, b and the zone of the negative electrode current collection on the minus plate 12 120a, b on the anode flow channel plate 10 respectively.
The ground of anode collector plate 110a, b and the base material of minus plate 12 can be metal material or composite material that nonmetallic materials constituted, metal material can be materials such as various metals, metal oxide, metal alloy, stainless steel such as gold, white gold, silver, aluminium, chromium, titanium, cadmium, and nonmetallic materials can be materials such as carbon, graphite, FR4 or FR5.And the ground of anode collector plate 110a, b can utilize plating, electroless-plating, sputter or other chemistry, physical deposition method, conductive layer is attached on the collector plate ground, and the surface of this collector plate ground must be completely covered at least one deck conductive layer; Minus plate 12 can be made by printed circuit board (PCB) (PCB), plastic plate, graphite cake or metallic plate, preferable minus plate 12 is made for utilizing printed circuit board (PCB) (PCB), and the base material of indication generally refers to copper clad laminate in the printed circuit board (PCB), can strengthen macromolecular material by glass at the ground of this copper clad laminate and be constituted, but be not limited thereto.
This minus plate 12 comprises a base material, at least one negative electrode current collection zone 120a, b and a plurality of perforation, and this minus plate 12 utilizes exposure imaging technology to define at least one cathode zone in its positive and negative, and carry out bore process in this cathode zone, run through a plurality of perforation of minus plate 12 and cathode zone with formation, electroplate on this cathode zone surface, electroless-plating, sputter or other chemistry, physical deposition technology, make and cover one deck conductive layer (figure does not show) at least on the surface of this cathode zone and the hole wall of boring a hole thereof, to form negative electrode current collection zone 120a, b, this conductive layer material is a conducting metal, for example: copper, gold, silver or platinum etc.
The centre sticks together material 14a and its characteristic of 14b is to want and can good stable tackifying ability be arranged with anode flow channel plate 10 and minus plate 12, the material that material 14a and 14b are sticked together in general centre is the macromolecule adhesion material, comprise that than the proper polymer adhesion material prepreg sticks together material, epoxy resin (epoxy) or other macromolecule and sticks together material, meeting hot melt gel set makes anode flow channel plate 10 and minus plate 12 cemented during high temperature.
According to preferred embodiment of the present invention, proton exchange membrane 116 is that a carbon fluorine is a proton exchange membrane, the Nafion membrane electrode of E.I.Du Pont Company for example, but be not limited thereto, its also can for hydrocarbon be proton exchange membrane.
Of the present invention first is characterised in that sets up leakproof adhesion layer 18a and 18b in the fuel cell module 1, it is along the periphery configuration of mea 16, and cooperate the shape of mea 16 to become a frame type, four limits have suitable width, make its exposed edge that can upper and lowerly stick the proton exchange membrane 116 of mea 16 separately, directly stick together material 14a and 14b contacts with the centre with the exposed edge of the proton exchange membrane 116 that is intended to avoid mea 16.
The proton exchange membrane 116 of leakproof adhesion layer 18a of the present invention and 18b and mea 16 and middle sticking together all have good and stable tackifying ability between material 14a and the 14b, for example, PU (Polyurethane) is that adhesion material or silica gel (silicone) are resin or the like.
Because leakproof adhesion layer 18a and the upper and lower exposed edge that sticks the proton exchange membrane 116 of mea 16 separately of 18b energy, avoid the exposed edge of proton exchange membrane 116 directly to stick together material 14a and 14b contacts with the centre, therefore the proton exchange membrane 116 of having improved script mea 16 is sticked together material 14a and the not good problem of 14b adhesion with middle, so the present invention can block methyl alcohol leakage path really.
It should be noted that, in another embodiment of the present invention, also leakproof adhesion layer 18a can only be set between mea 16 and anode flow channel plate 10, and the leakproof adhesion layer 18b between cancellation mea 16 and the minus plate 12, with the saving material and technology, but can reach the purpose of improving tackness and blocking methyl alcohol leakage path equally.
Second key character of fuel cell module 1 of the present invention is that the design of its anode flow channel plate 10 is with different in the past.See also Fig. 3 and Fig. 4, wherein Fig. 3 is the front schematic view of anode runner plate 10 among Fig. 1, and Fig. 4 is the explosive view of anode runner plate 10 among Fig. 1.
As shown in Figures 3 and 4, anode flow channel plate 10 comprises an anode-supported substrate 100, the conducting wire 114a and the 114b that form with printed circuit board technology are arranged on it, anode collector plate 110a and 110b difference pressing solid welding are at the corresponding opening part of anode-supported substrate 100, wherein, anode collector plate 110a is electrically connected with the end of conducting wire 114a, and this collector plate 110b is electrically connected with the end of conducting wire 114b.
Anode flow channel plate 10 comprises the metallic laminas 112a and the 112b of the folding that can break in addition, wherein, metallic laminas 112a is electrically connected with the other end of conducting wire 114a, metallic laminas 112b is electrically connected with the other end of conducting wire 114b, so, after assembling,, make that each battery unit born of the same parents (cell unit) in the fuel cell module 1 can constitute the serial or parallel connection configuration by the stubborn folding of metallic laminas 112a and 112b.
Be noted that, the metallic laminas 112a of anode flow channel plate 10 of the present invention and 112b and anode-supported substrate 100 are connected with methods such as spot welding or solderings, and anode collector plate 110a and 110b finished with methods such as spot welding or solderings with being connected equally of anode-supported substrate 100.
As shown in Figure 4, anode-supported substrate 100, metallic laminas 112a and 112b and anode collector plate 110a and 110b promptly constitute a positive plate 101 behind the difference welding press.And aforesaid positive plate 101, stick together material 240 and runner plate 102 pressings after, promptly constitute anode flow channel plate 10.The aforesaid material 240 that sticks together comprises that prepreg sticks together material or epoxy resin.
Because metallic laminas 112a and 112b there is no directly with corresponding anode collector plate 110a and 110b and contact, but pass through respectively in advance with printed circuit board technology formed conducting wire 114a and the electrical connection of 114b formation on anode-supported substrate 100 surfaces, and promptly form recess between metallic laminas 112a and 112b and corresponding anode collector plate 110a and the 110b, it can be sticked together material 14a by the centre and fill up in follow-up assembling process, therefore, can effectively block the path that methanol liquid leaks outside via metallic laminas 112a and 112b.
In the Prior Art, since the collector plate string and the time the stubborn folding stress that caused, it is bad to cause sticking together effect, adds in the process of thermal shock experiment, and the rising-heat contracting-cold of metal causes the methyl alcohol leakage problem due to the interface damage of sticking together between material and collector plate also therefore can be improved.
The making that the 3rd key character of the present invention is anode collector plate 110a and 110b with stainless steel as collector plate ground 201, SS316L for example, outer lining is with the conductive layer 202 of methanol tolerance corrosion, for example: copper, gold, silver or platinum etc., wherein the cost with silver is comparatively cheap again, as shown in Figure 5.Conductive layer 202 covers stainless steel collector plate ground 201 fully, and itself and methanol solution are isolated fully.In addition, collector plate ground 201 also can be made of nonmetal institute.
Benefit at anode collector plate 110a and 110b surface deposition silver is that its conductivity is preferable, and the methanol tolerance corrosive power is strong, can improve the usefulness and the durability of fuel cell module 1.In addition, therefore metallic laminas 112a and 112b can use copper as its material, but be not limited to this owing to can not contact with methyl alcohol.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (19)
1. fuel cell module includes:
One anode flow channel plate comprises at least one positive plate, and wherein this positive plate comprises an anode-supported substrate, and it has the formed wire line of the printed circuit board technology of use; And at least one anode collector plate, wherein this anode collector plate is to be fixed on the described anode-supported substrate, and with described wire line electrical links; One runner plate is in order to fueling and product circulation; And one stick together material, and its two sides contacts with runner plate with described positive plate respectively;
At least one minus plate comprises a base material, at least one negative electrode current collection zone and a plurality of perforation, and wherein said negative electrode current collection zone is the tow sides that are covered in described base material, is densely covered with a plurality of perforation in it;
One mea comprises at least one proton exchange membrane;
Stick together material in the middle of one, it has a corresponding opening, in order to ccontaining described mea; And
One leakproof adhesion layer, between described anode flow channel plate and described mea, being used for avoiding described centre to stick together material contacts with described proton exchange membrane, and the tackifying ability of described leakproof adhesion layer and described proton exchange membrane, it is good that material is sticked together in more described centre, wherein, it is stacking between described anode flow channel plate and described minus plate that material, this mea and this leakproof adhesion layer are sticked together in this centre, and the two sides of described mea contacts with described negative electrode current collection zone with described anode flow channel plate respectively.
2. fuel cell module as claimed in claim 1, wherein, described leakproof adhesion layer material is that PU is that adhesion material or silica gel are resin.
3. fuel cell module as claimed in claim 1, wherein, it is the macromolecule adhesion material that material is sticked together in described centre.
4. fuel cell module as claimed in claim 3, wherein, described macromolecule adhesion material is that prepreg sticks together material or epoxy resin.
5. fuel cell module as claimed in claim 1, wherein, described anode collector plate is metal substrate or non-metal substrate.
6. fuel cell module as claimed in claim 5, wherein, described metal substrate is made of gold, white gold, silver, aluminium, chromium, titanium, cadmium, metal alloy or stainless steel.
7. fuel cell module as claimed in claim 5, wherein, described non-metal substrate is carbon, graphite, FR4 or FR5.
8. fuel cell module as claimed in claim 1, wherein, described negative electrode current collection zone is made of one deck conductive layer at least.
9. fuel cell module as claimed in claim 8, wherein, described conductive layer uses plating, electroless-plating, sputter or chemistry or physical deposition method to form.
10. fuel cell module as claimed in claim 9, wherein, described conductive layer is made of copper, gold, silver or platinum.
11. fuel cell module as claimed in claim 1, wherein, described anode collector plate is fixed on the described anode-supported substrate with pressing, spot welding or soldering.
12. fuel cell module as claimed in claim 1, wherein, the surface of bottom material of described anode collector plate must be completely covered at least one deck conductive layer.
13. fuel cell module as claimed in claim 12, wherein, described conductive layer utilization plating, electroless-plating, sputter or chemistry or physical deposition method are to cover described anode collector plate ground.
14. fuel cell module as claimed in claim 12, wherein, described conductive layer has the characteristic of methanol tolerance corrosion.
15. fuel cell module as claimed in claim 12, wherein, described conductive layer is made of copper, gold, silver or platinum.
16. fuel cell module as claimed in claim 1, wherein, described proton exchange membrane for the carbon fluorine be proton exchange membrane or hydrocarbon be proton exchange membrane.
17. fuel cell module as claimed in claim 1, wherein, described minus plate is formed by printed circuit board (PCB), plastic plate, graphite cake or metallic plate.
18. fuel cell module as claimed in claim 1, wherein, described anode flow channel plate comprises the metallic laminas that can break and roll in addition, in order to be electrically connected the conducting wire on the anode-supported substrate, with each battery unit born of the same parents in the described fuel cell module of serial or parallel connection.
19. fuel cell module as claimed in claim 18, wherein, described metallic laminas is connected with the mode of described anode-supported substrate with spot welding or soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101492709A CN100570942C (en) | 2007-03-28 | 2007-09-10 | Fuel cell modular structure |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710091583.3 | 2007-03-28 | ||
| CN200710091583 | 2007-03-28 | ||
| CN2007100915833 | 2007-03-28 | ||
| CNB2007101492709A CN100570942C (en) | 2007-03-28 | 2007-09-10 | Fuel cell modular structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101276926A CN101276926A (en) | 2008-10-01 |
| CN100570942C true CN100570942C (en) | 2009-12-16 |
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ID=39996074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101492709A Expired - Fee Related CN100570942C (en) | 2007-03-28 | 2007-09-10 | Fuel cell modular structure |
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| Country | Link |
|---|---|
| CN (1) | CN100570942C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142572B (en) * | 2010-01-28 | 2013-11-06 | 南亚电路板股份有限公司 | Direct methanol fuel cell structure and manufacturing method thereof |
| CN111697257B (en) * | 2020-05-15 | 2022-02-22 | 西安交通大学 | Integrated on-site hydrolysis hydrogen production and hydrogen fuel cell power generation device and method |
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2007
- 2007-09-10 CN CNB2007101492709A patent/CN100570942C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101276926A (en) | 2008-10-01 |
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Granted publication date: 20091216 Termination date: 20120910 |