CN101373841A - The fuel cell - Google Patents
The fuel cell Download PDFInfo
- Publication number
- CN101373841A CN101373841A CNA200710142682XA CN200710142682A CN101373841A CN 101373841 A CN101373841 A CN 101373841A CN A200710142682X A CNA200710142682X A CN A200710142682XA CN 200710142682 A CN200710142682 A CN 200710142682A CN 101373841 A CN101373841 A CN 101373841A
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- fuel cell
- collector plate
- mea
- plate
- cathode collector
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- 238000005086 pumping Methods 0.000 description 6
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Images
Classifications
-
- 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
Landscapes
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel cell, which comprises at least one fuel cell module. The fuel cell module has a membrane electrode assembly, two substrates, an anode collector plate, and a cathode collector plate. The two substrates are arranged at two opposite sides of the membrane electrode assembly to be clamped around the membrane electrode assembly, and the anode collector plate and the cathode collector plate are respectively assembled in the middle area of the membrane electrode assembly. In addition, the cathode collector plate protrudes from the corresponding substrate. In the invention, the water generated at the cathode end can be discharged through the edge of the cathode collector plate to improve the power generation efficiency.
Description
Technical field
The present invention relates to a kind of battery and module thereof, and be particularly related to a kind of fuel cell.
Background technology
Along with the progress of science and technology, the consumption of traditional energy such as coal, petroleum and natural gas continues to raise.Because the storage of natural energy source is limited, therefore, at present each state all at the new alternative energy source of research and development replacing traditional energy, and fuel cell is a kind of important and selection of having practical value.
Figure 1A is the structural representation of known a kind of stack fuel cell module.Please refer to Figure 1A, fuel cell module 100 comprise mea (membrane electrode assembly, MEA) 110, anode collector plate 120a and cathode collector plate 120b.Anode collector plate 120a and the employed material of cathode collector plate 120b are graphite cake, and the side of anode collector plate 120a and cathode collector plate 120b all portrayed a plurality of grooves, with respectively as anode flow channel 122a and cathode flow channels 122b.Anode flow channel 122a and cathode flow channels 122b are respectively in order to carry anode reactant (methanol solution) and cathode reactant (oxygen or air).Under practical situations, a plurality of fuel cell modules 100 are piled up, like this then can produce the output of higher power.
Hold above-mentioned, known fuel cell and can have some problems, and influence generating efficiency and improve manufacturing cost.For instance, in fuel cell, cathode terminal can produce water in the process of chemical reaction.And these water then can hinder the reagentia of cathode terminal if be accumulated in cathode terminal, and then reduce the generating efficiency of fuel cell.Problem for the water accumulation that solves above-mentioned cathode terminal; usually can utilize gas pumping (not illustrating); air (or oxygen) is squeezed into cathode flow channels produce reaction, and the water that drives cathode terminal thus simultaneously and produced leaves fuel cell, reach the purpose of draining for cathode terminal.But the noise that produces during gas pumping running is bigger, and its power consumption is excessive, is not suitable in the portable product, and the useful life of gas pumping is not long, so can make cost improve.
For the reactant of the cathode and anode that prevents fuel cell leaks, and the gas pressure that the gas pumping is produced can provide fully to the negative electrode runner, so each member of fuel cell, be meant especially between cathode collector plate and the mea, closely pressing, avoiding gas or leak of liquid, and cause bad influence, for example the generating efficiency of battery reduces.The mode of each member of tradition assembling fuel cell, be to utilize the area of the area of anode collector plate and cathode collector plate much larger than mea, and add two end plates (end plate) in the outside of anode collector plate and cathode collector plate, and then with a plurality of screws locking peripheral region, make two end plates near and the pressing fuel cell.Yet this kind pressing mode can make that but mea has different decrements, and influences the impedance and the energy output thereof of mea inside, and then reduces the useful life of fuel cell.And, in the process of pressing fuel cell, the problem that regular meeting causes the collector plate made with graphite cake to break, and make manufacturing cost improve.Though, being used as collector plate with metallic plate and can solving the problem that graphite cake easily breaks, the weight of metallic plate is heavier, and has the problem of material corrosion.
Please refer to Figure 1B, it illustrates the stereogram of known another kind of planar stack fuel cell.This planar stack fuel cell 130 mainly comprises a plurality of fuel cell modules 132 and fan 134.Have a plurality of mea on same plane with a slice fuel cell module 132, and each mea outside disposes cathode collector plate 136.Traditional cathode collector plate for example is the thin slice (shown in Fig. 1 D) of metal knitted net (shown in Fig. 1 C), Metal-Piercing, or is the surface gold-plating porousness collector plate (shown in Fig. 1 E) of base material with circuit board material FR4.Because the material of above-mentioned each cathode collector plate has flexibility, therefore in the assembling process that carries out pressing, can make cathode collector plate produce distortion, cause the ohmage (internal resistance) of fuel cell module too high, and cell integrated generating efficiency is reduced.
The drainage pattern of planar stack fuel cell 130 is to use long fan 134 place of gas pumpings of life-span.But the blast that fan produces is lower than the blast that the gas pumping can produce, and makes the effect of draining relatively poor.In addition, for air-flow and the cathode catalyst layer in the mea that fan is provided has bigger contact area, cathode collector plate must have bigger aperture opening ratio.But excessive aperture opening ratio can reduce the structural strength of cathode collector plate on the contrary.Moreover for the air-flow that fan is provided can be passed to each position of cathod catalyst laminar surface uniformly, the fan wavy cathode runner plate of need arranging in pairs or groups usually uses.Though wavy cathode runner plate can remedy the rigidity deficiency of cathode collector plate, so that the strength demand in the pressing to be provided, but its shortcoming is to have bigger volume, and makes that the volume of overall fuel cell is excessive.
In addition, United States Patent (USP) the 5th, 856, No. 035 (U.S.Pat.No.5,856,035) disclose a kind of solid-oxide fuel cell group structure.Please refer to Fig. 1 F, it is the schematic diagram of disassembling that illustrates solid-oxide fuel cell group structure.Shown in Fig. 1 F, solid-oxide fuel cell group 10 is piled up by groove structure 42, way flow moved end connection 24, negative electrode 14, conductive bipolar plate 16, negative electrode 14, the connection 26 of way flow moved end and groove structure 40 in regular turn from lower to upper and is formed.Though the cathode product of solid-oxide fuel cell group 10 is not to be liquid state, and the phenomenon of liquid spill-over (flooding) can not take place.But the structure of this patent still can't effectively solve the above problems.
In addition, fuel cell can improve its generating efficiency in the mode of direct heating anode reactant or heating battery heap usually when cold start-up.Though this kind mode of heating can reach the purpose of the power output that improves fuel cell, can additionally expend too much electric energy simultaneously, and make whole economic benefit not high.
Summary of the invention
The invention provides a kind of fuel cell, can solve the variety of problems that known water accumulation, decrement are uneven and derive,, improve the useful life of fuel cell to keep the generating efficiency of fuel cell.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.
For reaching part or all above-mentioned purpose or other purposes, embodiments of the invention propose a kind of fuel cell, and it comprises at least one fuel cell module.And fuel cell module comprises mea, first substrate, second substrate, anode collector plate and cathode collector plate.First substrate has first opening, and first substrate is disposed at first side of mea, and first opening appears the zone line of mea.Second substrate has second opening, and is disposed at second side of mea, and second opening manifests the zone line of mea.Wherein, first substrate and second substrate are in order to be held on the relative both sides of mea.The anode collector plate is disposed at second side of mea, to cover the zone line of mea.In addition, cathode collector plate is disposed at first side of mea, and is assembled in first substrate, to cover the zone line of mea.And cathode collector plate stretches in first opening, and and mea between form a plurality of runners.
In the present invention, because cathode collector plate protrudes from corresponding substrate, and the side of cathode collector plate appears the runner to small part.Therefore, the water that cathode terminal produced can be overflowed by the edge of cathode collector plate, and can not accumulate in the cathode catalyst layer, to keep the generating efficiency of fuel cell.In other words, the edge of cathode collector plate can allow extraneous air turnover.And, when the pressing assembling of carrying out fuel cell, can make the decrement that is applied to mea even, and can not cause bad influence the impedance and the energy output thereof of mea inside, can improve the useful life of fuel cell.
Description of drawings
Figure 1A is the structural representation of known a kind of stack fuel cell module.
Figure 1B is the stereogram that illustrates known another kind of planar stack fuel cell.
Fig. 1 C, Fig. 1 D and Fig. 1 E are the schematic diagram that illustrates known cathode collector plate.
Fig. 1 F is the schematic diagram of disassembling that illustrates known a kind of solid-oxide fuel cell group structure.
Fig. 2 A is the structural representation according to a kind of fuel cell module that embodiments of the invention illustrated.
Fig. 2 B is the structural representation according to a kind of fuel cell module that embodiments of the invention illustrated.
Fig. 3, Fig. 4, Fig. 5 A, Fig. 6 are the structural representation according to a kind of cathode collector plate that embodiments of the invention illustrated.
Fig. 5 B is a kind of structural representation that disposes the fuel cell module of a plurality of cathode collector plates that illustrates embodiments of the invention.
Fig. 7, Fig. 8 are the structural representation according to the another kind of cathode collector plate that embodiments of the invention illustrated.
Fig. 9 is the structural representation according to a kind of fuel cell that embodiments of the invention illustrated.
Description of reference numerals
1: the solid-oxide fuel cell group
14: negative electrode
16: conductive bipolar plate
24,26: the way flow moved end connects
40,42: the groove structure
100,200,500: fuel cell module
110,202: mea
120a, 206: anode collector plate
120b, 208,230,236,242,302,310: cathode collector plate
122a: anode flow channel
122b: cathode flow channels
204a: first substrate
204b: second substrate
207a, 304a, 312a: pressing district
207b, 304b, 312b: fixed area
209: the surface
210: proton exchange membrane
212: anode catalyst layer
214: cathode catalyst layer
216: anode diffusion layer
218: cathode diffusion layer
220: the second openings
222: the first openings
224: runner
226,232,238,244: base plate
228,234,240,252: protuberance
246: opening
248,250: flap
306: perforation
308: base plate
312: connector
900: fuel cell
902: dividing plate
Embodiment
The explanation of following each embodiment is graphic with reference to what add, can be in order to the specific embodiment of implementing in order to illustration the present invention.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side " etc., only be direction with reference to additional illustration.Therefore, the direction term of use is to be used for explanation, but not is used for limiting the present invention.
The fuel cell of present embodiment comprises at least one fuel cell module, and is to comprise that with fuel cell a fuel cell module is that example is done explanation in Fig. 2 A and Fig. 2 B.Fig. 2 A is the structural representation according to a kind of fuel cell module that embodiments of the invention illustrated.Fig. 3 is the part-structure schematic diagram according to a kind of cathode collector plate that embodiments of the invention illustrated.
Please refer to Fig. 2 A, fuel cell module 200 comprises mea (membrane electrodeassembly, MEA) 202, the first substrate 204a, the second substrate 204b, anode collector plate 206 and cathode collector plate 208.Wherein, mea 202 for example is made up of proton exchange membrane 210, anode catalyst layer 212, cathode catalyst layer 214, anode diffusion layer 216 and cathode diffusion layer 218.Anode catalyst layer 212 is arranged on a side of proton exchange membrane 210, and cathode catalyst layer 214 is arranged on the opposite side of proton exchange membrane 210.Anode diffusion layer 216 is arranged on the anode catalyst layer 212, and cathode diffusion layer 218 is arranged on cathode catalyst layer 214.And, anode diffusion layer 216 for example is to be had by surface coated to be about 30% hydrophobicity polytetrafluoroethylene (poly-tetra-fluoro-ethylene with the material of cathode diffusion layer 218, PTFE) carbon cloth fiber constitutes, so can help draining, to avoid causing the power output decline of fuel cell because of the water accumulation.
The first substrate 204a is disposed at first side of mea 202, and has the zone line that first opening, 222, the first openings 222 manifest mea 202.In addition, the second substrate 204b is disposed at second side of mea 202.The first substrate 204a is in order to be held on the relative both sides of mea 202 with the second substrate 204b.In the present embodiment, the second substrate 204b has second opening 220, and second opening 220 also manifests the zone line of mea 202.The material of the first substrate 204a and the second substrate 204b for example is to can be the polymethyl methacrylate fibre base plate, and its material for example is FR4, FR5 or other suitable polymethyl methacrylate fibers.First, second substrate 204a, 204b and mea 202 follow the adhesive glue that spendable material is the epoxy resin combined fiberglass.In addition, the material of first, second substrate 204a, 204b for example is that it(?) also can be directly solidified the back and made by the adhesive glue of epoxy resin combined fiberglass.The material of first, second substrate 204a, 204b can for example be an epoxy resin also.The material of first, second substrate 204a, 204b also can be for example for having the plastic substrate of certain intensity and high endurance, and its technology can utilize the coincidence process of the notion similar to the lamination type circuit board to make.Anode collector plate 206 is disposed at second side of mea 202, to cover the zone line of mea 202.
In another embodiment, shown in Fig. 2 B, the second substrate 204b also can be the anode flow channel plate of plastic material, and anode collector plate 206 can be bonded on the anode flow channel plate earlier, can have the structure that makes the anode reactant turnover this moment between anode flow channel plate and the anode collector plate, for example pass in and out for hole 225 can make anode reactant (for example methyl alcohol).
In addition, the cathode collector plate 208 of the fuel cell module 200 of present embodiment is disposed at first side of mea 202, and is assembled in the first substrate 204a, and to cover the zone line of mea 202, wherein cathode collector plate 208 stretches in first opening 222.Cathode collector plate 208 has the pressing district 207a of first side that is positioned at mea 202 and is positioned at the fixed area 207b of 207a both sides, pressing district.Cathode collector plate 208 is served as reasons, and electric conducting material not yielding, deflection is formed, and the material of electric conducting material for example is SUS316L or other stainless steel.In one embodiment, can on surface 209, plate the good metal of conductivity such as copper (Cu) or gold (Au) etc., to strengthen electrical conduction away from the cathode collector plate 208 of mea 202.In addition, have preferred endurance, can also plate on the surface 209 of cathode collector plate 208 after the good metal of conductivity, then be coated with insulation material layers such as teflon (Teflon) or endurance plastic material for making cathode collector plate 208.Particularly, the cathode collector plate 208 of present embodiment protrudes from the first corresponding substrate 204a, and and mea 202 between form a plurality of runners 224.And the pressing district 207a area of cathode collector plate 208 can be less than mea 202, and the side of cathode collector plate 208 can manifest the runner 224 of at least a portion.
Therefore, when utilizing fan to provide air (or oxygen) to react to cathode terminal, these air (or oxygen) can more easily be taken away the water that cathode terminal produced by these runners 224.In addition, if water that cathode terminal produced is crossed the low condensation of moisture Cheng Shui that makes because of getting rid of speed, the water after then these condense also can be discharged by the runner around the cathode collector plate 208 224 under action of gravity for example.In other embodiments, parent/hydrophobic processing is for example arranged, the water of cathode terminal can be discharged by cathode collector plate 208 on the surface 209 of cathode collector plate 208; Or for example be an inclined plane on the surface 209 of cathode collector plate 208, the water of cathode terminal can be discharged along the inclined plane; Or the rill micro-structural of water guide is for example arranged on the surface 209 of cathode collector plate 208 or weave the suction web frame, the water of cathode terminal can be discharged via this micro-structural.Therefore, the water of cathode terminal is discharged via the runner around the cathode collector plate 208 224, and water spill-over (flooding) can not take place, and then can keep the generating efficiency of fuel cell.And, can also omit in the existing skill of configuration and use so that air-flow evenly is passed to the cathode runner plate of mea.On the other hand, the edge of cathode collector plate 208 also can allow extraneous air turnover, to help to improve the usefulness of fuel cell module.
Hold above-mentionedly, in the present embodiment, the pressing district of cathode collector plate and fixed area can for example be same structures, below lift Fig. 3, Fig. 4, Fig. 5 A and Fig. 6 and explain for example.Please refer to Fig. 3, the pressing district 207a of cathode collector plate 208 comprises base plate 226 and a plurality of protuberance 228.These protuberances 228 are disposed at a side of base plate 226, and are protruded towards the mea 202 of correspondence by a side of base plate 226, and wherein these runners are formed between these protuberances 228.And these protuberances 228 can be for example be equal in length and the fin that is arranged parallel to each other.In another embodiment, for cooperating the demand of mea pressing, the stitching surface of the protuberance 228 of cathode collector plate 208 also can be curved design, and promptly protuberance 228 is a curved surface near the surface of mea.
Please refer to Fig. 4, cathode collector plate 230 comprises base plate 232 and protuberance 234.The structure of cathode collector plate 230 is identical with the structure of cathode collector plate 208 among Fig. 3 haply, and the two difference is: the protuberance 234 of cathode collector plate 230 is made up of two kinds of unequal fins of length, and a side that is parallel to base plate 232 of interting mutually.
Please refer to Fig. 5 A, cathode collector plate 236 comprises base plate 238 and protuberance 240.The structure of cathode collector plate 236 is identical with the structure of cathode collector plate 208 among Fig. 3 haply, and the two difference is: the protuberance 240 of cathode collector plate 236 is cylinder, it for example is a cylinder, and these cylinders are arrayed sides in base plate 238.
Please refer to Fig. 6, cathode collector plate 242 comprises base plate 244 and protuberance 252.The structure of cathode collector plate 242 is identical with the structure of cathode collector plate 208 among Fig. 3 haply, and the two difference is: the base plate 244 of cathode collector plate 242 has a plurality of openings 246, and protuberance 252 is positioned at the edge of corresponding opening 246.Each protuberance 252 comprises flap 250 and flap 248, and wherein flap 250 is parallel to base plate 244, and flap 248 is connected in flap 250 and base plate 244, and perpendicular to base plate 248.
Hold above-mentionedly, embodiments of the invention also can be disposed at a plurality of cathode collector plates on the same substrate, are that example is done explanation at this cathode collector plate with Fig. 5 A.Shown in Fig. 5 B, it illustrates a kind of structural representation that disposes the fuel cell module of a plurality of cathode collector plates.In Fig. 5 B, omit and show mea, anode collector plate, and only show cathode collector plate.Fuel cell module 500 can include a plurality of cathode collector plates 236, and it is to be disposed on the substrate at a certain distance.By Fig. 5 B as can be known, can to make runner be open to a plurality of cathode collector plates 236 on the fuel cell module 500.Therefore, water can be overflowed by the edge of cathode collector plate, and air-flow is evenly transmitted.
Certainly, the present invention not structure of target collector plate does special qualification, and except the foregoing description, the pressing district of cathode collector plate and fixed area also can for example be structures inequality, and it can also be the enforcement kenel that illustrates as Fig. 7 or Fig. 8.
Please refer to Fig. 7, cathode collector plate 302 has pressing district 304a and fixed area 304b.Wherein, the structure of the pressing district 304a of this cathode collector plate 302 can for example be to illustrate as Fig. 3, Fig. 4, Fig. 5 A and Fig. 6, does not repeat them here.The fixed area 304b of cathode collector plate 302 is positioned at 304a both sides, pressing district, and its structure example has the base plate 308 of a plurality of perforation 306 in this way.
Please refer to Fig. 8, cathode collector plate 310 has pressing district 312a and fixed area 312b, and the structure of pressing district 312a can for example be to illustrate as Fig. 3.The fixed area 312b of cathode collector plate 310 comprises base plate 314 and a plurality of connector 316 that is disposed at a side of base plate 314, and the connector 316 of cathode collector plate 310 is in order to be connected (shown in Fig. 2 A) with the first substrate 204a.And connector 316 for example is a clamping part, and it can for example be trip or hole clipping.In Fig. 8, be to illustrate connector 316 to do explanation for trip.In addition, the structure of pressing district 312a also can for example be that Fig. 4, Fig. 5 A and Fig. 6 illustrate, and does not repeat them here.Next, with the assembling mode of Fig. 2 A and Fig. 3 simple declaration fuel cell module 200.When carrying out the assembling of fuel cell module 200, the user can be earlier by the first substrate 204a and the second substrate 204b be held on mea 202 around with the fixing edge of mea 202.Then, again anode collector plate 206 and cathode collector plate 208 are held on the zone line of mea 202, to adjust the pressing amount of mea 202.Or with the assembling mode of Fig. 2 B and Fig. 3 simple declaration fuel cell module 200.Anode collector plate 206 combines with the second substrate 204b earlier, and mea 202 is held between the first substrate 204a and the second substrate 204b again.In above-mentioned assembling mode, cathode collector plate 208 can for example be in the mode that welding, gluing, hot pressing or screw lock fixed area 207b to be connected on the contiguous first substrate 204a or mechanism's part on every side, or to connect on the second substrate 204b or the mechanism's part on every side with the mode of welding, gluing, hot pressing or screw lock.In addition, cathode collector plate 302 with Fig. 7, can for example be to pass perforation 306, and be locked on the first substrate 204a or be locked on the second substrate 204b, even can make screw through boring a hole 306 by first, second substrate 204a, 204b and utilize nut to fix with screw.With the cathode collector plate 302 of Fig. 8, can for example be the structure that on the first substrate 204a of corresponding connector 316 positions, disposes combined connection component 316.For instance, connector 316 can for example be a trip, and the first substrate 204a can the engaging mode be connected with connector 316.Thus, can improve mea 202 and other extra encapsulating materials that uses, PCB for example, between the remaining phenomenon of interfacial stress.
Be noted that especially because the pressing district area of the cathode collector plate of present embodiment is little than the area of mea, and be stereochemical structure.Therefore, when the pressing assembling of carrying out fuel cell, can make the decrement that is applied to mea even, and can not cause bad influence, can improve the useful life of fuel cell the impedance and the energy output thereof of mea inside.
On the other hand, the cathode collector plate of present embodiment can for example be to adjust its aperture opening ratio by the arrangement mode difference of protuberance, and have big aperture opening ratio, so that the cathode catalyst layer in air-flow and the mea has bigger contact area, improve the power output of fuel cell.
In another embodiment, also configurable on cathode collector plate have a heating plate, in order to the heating mea to improve the generating efficiency of fuel cell.This heating plate can be the resistance heating wire or ceramic heat plate or nickel filament etc. are made.Material with electrical conduction is made if heating plate is served as reasons, and then need have to be electrically insulated between heating plate and cathode collector plate.In detail, directly heat the mode that anode reactant or heating battery are piled in existing skill, the mode of configuration heating plate can have preferred economic benefit on cathode collector plate, and can improve the generating efficiency of overall fuel cell.
Fuel cell of the present invention still has other enforcement kenel except the foregoing description.In Fig. 9, be to illustrate fuel cell to comprise that two fuel cell modules are that example is done explanation, right fuel cell of the present invention can also be to be piled up by a plurality of fuel cell modules to form.Please refer to Fig. 9, it is the structural representation according to a kind of fuel cell that embodiments of the invention illustrated.Fuel cell 900 is to be piled up by two fuel cell modules of the present invention to form.In this embodiment, be that example is done explanation with the fuel cell module 200 of Fig. 2 A, and each member uses identical label, and omit the explanation that may repeat.Dispose dividing plate 902 between two fuel cell modules 200 of fuel cell 900, and the anode collector plate 206 of two fuel cell modules 200 is respectively towards dividing plate 902.This dividing plate 902 also can be with the second substrate 204b as one or gummed for one, and also can there be the structure of runner on the two sides of dividing plate 902, with as having the anode flow channel plate that is electrically insulated, and this flow passage structure can provide the strength structure of mea pressing.Certainly, in this embodiment, also can on cathode collector plate, dispose heating plate, in order to the generating efficiency of heating mea with the raising fuel cell.
In sum, the fuel cell of the embodiment of the invention has following one or part or all of advantage at least:
1. negative electrode chemical reaction product water can be overflowed by the edge of cathode collector plate, and can not accumulate in the cathode catalyst layer, and then can keep the generating efficiency of fuel cell.And the edge of cathode collector plate also can allow extraneous air turnover.
2. because the drainage efficiency of cathode collector plate is preferred, and therefore, the rotating speed of fan can reduce, to reduce the consumption of fan to electric energy.
3. fuel cell of the present invention carries out pressing when assembling, can make mea decrement everywhere even, and make mea can have lower resistance value, and can improve the remaining phenomenon of interfacial stress between the encapsulating material of mea and other extra uses.
4. the cathode collector plate of fuel cell of the present invention can have bigger aperture opening ratio, and the problem that does not have the structural strength deficiency takes place, therefore the area of the cathode catalyst layer of mea and air (or oxygen) reaction can be bigger, and can improve the energy output of mea.
5. the present invention is incorporated into the function of cathode runner plate in the cathode collector plate, so need not use in the existing skill with so that the cathode runner plate that air-flow evenly can transmit, so structure is simpler, and assemble also more or less freely, volume is littler.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limit the present invention; those of ordinary skill in the technical field under any; without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking appended the claim person of defining.In addition, arbitrary embodiment of the present invention or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not to be used for limiting interest field of the present invention.
Claims (19)
1. fuel cell comprises:
At least one fuel cell module, this fuel cell module has:
Mea;
First substrate has first opening, and this first substrate is disposed at first side of this mea, and this first opening manifests the zone line of this mea;
Second substrate has second opening, and this second substrate is disposed at second side of this mea, and this second opening manifests the zone line of this mea, and wherein this first substrate and this second substrate are in order to be held on the relative both sides of this mea;
The anode collector plate is disposed at this second side of this mea, to cover the zone line of this mea; And
Cathode collector plate is disposed at this first side of this mea, and is assembled in this first substrate, and to cover the zone line of this mea, wherein this cathode collector plate stretches in this first opening, and and this mea between form a plurality of runners.
2. fuel cell as claimed in claim 1, wherein this cathode collector plate has the Yi He district and the fixed area that is positioned at these both sides, pressing district of first side that is positioned at this mea.
3. fuel cell as claimed in claim 2, wherein this pressing district of this cathode collector plate comprises:
First base plate; And
A plurality of protuberances are disposed at a side of this first base plate, and are protruded towards this mea of correspondence by this side of this first base plate, and wherein these runners are formed between these protuberances.
4. fuel cell as claimed in claim 3, wherein these protuberances are equal in length and the fin that is arranged parallel to each other.
5. fuel cell as claimed in claim 3, wherein the surface near this mea of these protuberances is a curved surface.
6. fuel cell as claimed in claim 3, wherein these protuberances are the fin that length is unequal and be arranged parallel to each other.
7. fuel cell as claimed in claim 3, wherein these protuberances are the cylinder that is arrayed.
8. fuel cell as claimed in claim 3, wherein respectively this protuberance comprises:
First flap is parallel to this first base plate; And
Second flap connects this first flap and this first base plate, and perpendicular to this first base plate.
9. fuel cell as claimed in claim 2, wherein the pressing district of the fixed area of this cathode collector plate and this cathode collector plate is a same structure.
10. fuel cell as claimed in claim 2, wherein the pressing district of the fixed area of this cathode collector plate and this cathode collector plate is a different structure.
11. fuel cell as claimed in claim 10, wherein this fixed area of this cathode collector plate has a plurality of perforation.
12. fuel cell as claimed in claim 10, wherein this fixed area of this cathode collector plate comprises:
Second base plate; And
A plurality of connectors are disposed at a side of this second base plate, in order to be connected with this first substrate.
13. fuel cell as claimed in claim 1, wherein this fuel cell module also comprises insulation material layer, coats on the surface away from this cathode collector plate of this mea.
14. fuel cell as claimed in claim 13, wherein this fuel cell module also comprises conductive material layer, between this insulation material layer and this cathode collector plate.
15. fuel cell as claimed in claim 1, wherein this fuel cell module also comprises heating plate, is disposed on this cathode collector plate.
16. fuel cell as claimed in claim 1, wherein this cathode collector plate be with welding, hot pressing, gluing, screw locks or the mode that fastens connects this second substrate or this first substrate.
17. fuel cell as claimed in claim 1, wherein this second substrate is the anode flow channel plate, and this anode collector plate is fixed on this anode flow channel plate, and has the structure that makes the anode reactant turnover between this anode flow channel plate and this anode collector plate.
18. fuel cell as claimed in claim 1, also comprise dividing plate, and this fuel cell is that a plurality of fuel cell modules pile up and form, and this dividing plate is disposed between two adjacent these fuel cell modules, and these anode collector plates of these fuel cell modules are respectively towards this dividing plate.
19. fuel cell as claimed in claim 18, wherein this dividing plate is to have the anode flow channel plate that is electrically insulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710142682XA CN101373841B (en) | 2007-08-20 | 2007-08-20 | Fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710142682XA CN101373841B (en) | 2007-08-20 | 2007-08-20 | Fuel cell |
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| Publication Number | Publication Date |
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| CN101373841A true CN101373841A (en) | 2009-02-25 |
| CN101373841B CN101373841B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200710142682XA Expired - Fee Related CN101373841B (en) | 2007-08-20 | 2007-08-20 | Fuel cell |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456906A (en) * | 2010-10-27 | 2012-05-16 | 扬光绿能股份有限公司 | Fuel cell stack |
| CN102738471A (en) * | 2011-04-01 | 2012-10-17 | 扬光绿能股份有限公司 | Fuel cell unit |
| CN103915639A (en) * | 2012-12-28 | 2014-07-09 | 现代自动车株式会社 | Heating apparatus and method for fuel cell |
| CN106887633A (en) * | 2015-12-15 | 2017-06-23 | 中国科学院大连化学物理研究所 | A kind of high-temperature fuel cell pile |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4308515B2 (en) * | 2002-12-27 | 2009-08-05 | パナソニック株式会社 | Battery module |
| JP4459793B2 (en) * | 2004-11-29 | 2010-04-28 | 株式会社日立製作所 | Fuel cell end plate and fuel cell |
| CN101101989A (en) * | 2006-07-03 | 2008-01-09 | 南亚电路板股份有限公司 | Fuel cell module with wave-shaped flow passage plate |
-
2007
- 2007-08-20 CN CN200710142682XA patent/CN101373841B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102456906A (en) * | 2010-10-27 | 2012-05-16 | 扬光绿能股份有限公司 | Fuel cell stack |
| CN102738471A (en) * | 2011-04-01 | 2012-10-17 | 扬光绿能股份有限公司 | Fuel cell unit |
| CN103915639A (en) * | 2012-12-28 | 2014-07-09 | 现代自动车株式会社 | Heating apparatus and method for fuel cell |
| CN103915639B (en) * | 2012-12-28 | 2017-12-22 | 现代自动车株式会社 | Heater and method for fuel cell |
| CN106887633A (en) * | 2015-12-15 | 2017-06-23 | 中国科学院大连化学物理研究所 | A kind of high-temperature fuel cell pile |
| CN106887633B (en) * | 2015-12-15 | 2020-01-14 | 中国科学院大连化学物理研究所 | High-temperature fuel cell stack |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101373841B (en) | 2010-12-08 |
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