CN105870476A

CN105870476A - Proton exchange membrane (PEM) fuel cell pile and flow field plate assembly

Info

Publication number: CN105870476A
Application number: CN201610250337.7A
Authority: CN
Inventors: 李骁; 赵锋
Original assignee: TROOWIN POWER SYSTEM TECHNOLOGY Co Ltd
Current assignee: TROOWIN POWER SYSTEM TECHNOLOGY Co Ltd
Priority date: 2016-04-21
Filing date: 2016-04-21
Publication date: 2016-08-17
Anticipated expiration: 2036-04-21
Also published as: CN105870476B

Abstract

The invention provides a negative electrode flow field plate of a fuel cell. The fuel cell is provided with a membrane electrode assembly and is characterized in by comprising a negative electrode flow field plate, wherein the negative electrode flow field plate is configured to seal the membrane electrode assembly and is provided with a group of fluid passages and a group of cooling passages, and the cooling passages are separately opposite to the fluid passages and are communicated with the fluid passages.

Description

PEM fuel cell heap and flow-field plate group thereof

Technical field

The present invention relates to field of fuel cell technology, particularly for the polymerization of PEM (PEM) fuel cell Thing hull cell heap.

Background technology

Fuel cell is a kind of energy source, and it can pass through reactivity material, the chemical reaction participated in such as oxygen or other oxidant Chemical energy from fuel is converted into electric energy.Hydrogen is modal fuel in this type of battery.Wherein, the most representational this The example of types of fuel cells technology is exactly proton exchange membrane (PEM) fuel cell.This types of fuel cells includes membrane electrode Group (MEA), this membrane electrode assembly includes the polymer dielectric between being clipped in respectively as the two-layer catalyst coat paper of negative and positive level Film；This membrane electrode assembly (MEA) is clipped between a pair flow-field plate again, and it is related to fuel and oxidant respectively.This fuel cell Operation principle comprise the following steps: hydrogen fuel is passed through in the anode flow field board of fuel cell side, then oxidant is passed through In the cathode flow field plate of fuel cell opposite side；Platinum catalyst (or other catalyst) is placed in anode-side makes hydrogen be separated into Positive charge Hydrogen Proton and negative charge hydrogen electronics；Polymer dielectric film only can make positive charge Hydrogen Proton pass rear entrance negative electrode, and Negative charge hydrogen electronics then needs to enter negative electrode by the passage of peripheral hardware, and now electric current i.e. produces；At cathode side, electronics and positive electricity Lotus proton is combined generation water with oxygen, discharges exclusive product as this battery.Additionally, because oxygen is to be blown into cathode flow field plate, Therefore this fuel cell can be made to cool down.Cathode flow field plate can use and be exposed in air as a kind of " open cathode structure ".

Traditional cathode flow field plate is designed with saw-like or square-wave-shaped structure, and air can be blown into wherein by aerator or fan. Comparing water cooling type battery pile, Luftgekuhlte rotierende battery pile has and is more easy to balanced design and is more easy to control strategy, and it can be by immediately Start.

One technical difficult points of the Luftgekuhlte rotierende proton exchange membrane fuel cell of employing polymer electrolyte film is Heat and water process management.Wherein polymer electrolyte film needs the inherent low resistance possessing high-moisture to keep thin film. When air-flow is by flow field plate channel, battery pile can be cooled down, but the evaporation accelerating moisture equally causes water content fall in thin film Low.Therefore, rotation speed of the fan need according to the most careful control (control strategy) of flow, ambient temperature and relative humidity with Reach balance.The output causing battery pile is declined by unsuitable rotation speed of the fan.

Another restriction using the Luftgekuhlte rotierende proton exchange membrane fuel cell of polymer electrolyte film is hydrogen seepage. In traditional design, saw-like cathode flow field plate is towards membrane electrode assembly, and it includes the catalysis of polymer electrolyte film and both sides Oxidant layer.Therefore, only sawtooth is pressed on packing ring, and other parts in this region do not receive the pressure of sawtooth and are difficult to be sealed, So that becoming potential hydrogen seepage region.It addition, this design generally defines hydrogen operating pressure less than 0.5bar.g.But, relatively High hydrogen pressure can promote kinetics, battery homogeneity, load change response and reduce hungry (the serious infringement fuel electricity of hydrogen The durability degree in pond) probability of happening, but may result in leakage or packing ring explosion higher than design pressure value.

Summary of the invention

Present invention is primarily targeted at it and provide a kind of fuel cell, wherein this fuel cell is combined with for PEM The flow-field plate group of fuel cell, to prevent hydrogen seepage.

It is a further object of the present invention to provide a kind of flow-field plate group, wherein this flow-field plate group allows higher operation of fuel cells pressure With raising cooling effectiveness.This performance boost is as the power-weight ratio of the fuel cell of high-energy-density energy source and continuation of the journey Ability.

It is a further object of the present invention to provide a kind of flow-field plate group, wherein the inner side of the cathode flow field plate of this flow-field plate group and anode The inner side of flow-field plate forms the continuous level on two opposites of practising physiognomy so that the inner side of the cathode flow field plate of this flow-field plate group and Only needing between the inner side of anode flow field board, a diaphragm seal is set and can realize inner side and this anode flow field of this cathode flow field plate Sealing between the inner side of plate.Further, the single diaphragm seal of this flow-field plate group realizes the inner side of this cathode flow field plate and is somebody's turn to do Sealing between the inner side of anode flow field board so that the reduction of the assembly difficulty of this flow-field plate group.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, to realize this proton Exchanged film fuel cell can work under the conditions of pressure is more than 0.5bar.g and hydrogen leakage not occur and therefore operates more Safety.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, to realize this proton Exchanged film fuel cell can work, so that this fuel cell is compared to tradition under the conditions of pressure is more than 0.5bar.g Type fuel cell, its kinetics, battery consistency, load the change elevated and hydrogen hungry generation probability of response are lowered.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, cold to promote air But efficiency, thus allow to use the thinner flow-field plate that can reduce gross weight power ratio.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, to reduce proton friendship Change the water content sensitivity to rotation speed of the fan of film.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, wherein this flow-field plate The newly-designed flow-field plate of group is easier to realize sealing and preventing hydrogen from leaking.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, wherein this new design Flow-field plate be applicable to be assemblied in most of tradition proton exchange membrane fuel cell.

It is a further object of the present invention to provide a kind of flow-field plate group for proton exchange membrane fuel cell, wherein this new design Flow-field plate is easy of use, simple in construction and cheap for manufacturing cost.

Other purpose of the present invention and feature are fully demonstrated by following detailed description and can be passed through claims In the combination of the means specially pointed out and device be achieved.

It is implemented by a kind of air cooling proton exchange fuel cell heap according to the present invention, object defined above and other purposes and advantage.

It is implemented by a kind of fuel cell according to the present invention, object defined above and other purposes and advantage, wherein this fuel cell bag Include a membrane electrode assembly and a flow-field plate group.

This flow-field plate group includes a cathode flow field plate and an anode flow field board, and wherein this membrane electrode assembly is sealed in this moon Between pole flow-field plate and this anode flow field board, wherein this cathode flow field plate has a planar side, a contrary channel side and one group Being formed at the fluid passage of this channel side, wherein this planar side is positioned at the one of this cathode flow field plate outside towards membrane electrode assembly, Wherein this fluid passage is arranged for enabling a fluid to flow to this membrane electrode assembly along this fluid passage, thus promotes that electrochemistry is anti- Should occur through this membrane electrode and produce electric energy, wherein this anode flow field board has a planar side, a contrary channel side With at least one fuel channel, wherein this planar side of this anode flow field board is positioned at an inner side of this anode flow field board, this sun This channel side of pole flow-field plate is positioned at an outside of this anode flow field board and seals this membrane electrode assembly, wherein this anode flow field board This fuel channel each be formed at this channel side of this anode flow field board, wherein this fuel channel is arranged for making fuel energy Enough it is provided to this membrane electrode assembly by this fuel channel.

Correspondingly, the present invention further provides a kind of cathode flow field plate for fuel cell, wherein this fuel cell has one Individual membrane electrode assembly, it includes a cathode flow field plate, and wherein this cathode flow field plate is positioned to seal this membrane electrode assembly, wherein This cathode flow field plate has one group of fluid passage and one group of cooling duct, and wherein this cooling duct is relative with this fluid passage respectively It is connected.

Correspondingly, the present invention further provides a kind of anode flow field board for fuel cell, wherein this fuel cell has one Individual membrane electrode assembly, it includes an anode flow field board, and wherein this anode flow field board has a planar side and a channel side, Wherein this planar side is positioned at an inner side of this anode flow field board, and wherein this channel side is positioned at outside one of this anode flow field board Side, wherein this channel side of this anode flow field board is set and is applicable to seal this membrane electrode assembly, and wherein this anode flow field board enters one Step includes at least one fuel channel, and wherein this fuel channel is formed at this channel side towards this membrane electrode assembly, so that combustion Material can be provided to this membrane electrode assembly by this fuel channel.

The present invention furthermore provides a kind of flow-field plate group for fuel cell, and wherein this fuel cell has at least one film Electrode group, it includes at least two flow-field plate, and wherein this membrane electrode assembly of this fuel cell is separately positioned on adjacent two streams Between field plate, the most each flow-field plate includes that a negative electrode plate body, an anode plate body and one group guide wall, wherein this negative electrode Plate body forms one group of first fluid groove spaced apart from each other, and wherein this guiding wall is spaced apart at this negative electrode plate body and this sun Between pole plate body, so that the most adjacent two guiding walls form the second fluid groove being positioned between the two, wherein this moon This first fluid groove of pole plate body is set and is connected with this second fluid groove respectively, so that each first fluid groove and phase The second fluid groove answered forms at least one continuous print fluid passage, wherein this fluid passage have a first passage opening, One second channel opening and a third channel opening, wherein this anode plate body of this flow-field plate has at least one and is set At the fuel channel in an outside of this anode plate body, this positive plate of the previous flow-field plate of the most adjacent two flow-field plate This membrane electrode assembly of being arranged on adjacent two flow-field plate between towards this fuel cell is set outside this of body, so that Fuel can be provided to this membrane electrode assembly by this fuel channel, this fluid passage of this negative electrode plate body of later flow-field plate This third channel opening be set towards this membrane electrode assembly so that this fluid passage allow fluid flowing this fluid lead to Between this first passage opening and this second channel opening in road, and it is provided to this fuel cell by this third channel opening This membrane electrode assembly

The present invention furthermore provides a kind of fuel cell, and it includes at least one membrane electrode assembly and a flow-field plate group, its In this flow-field plate group include at least two flow-field plate, wherein this membrane electrode assembly is respectively set between adjacent two flow-field plate, The most each flow-field plate includes that a negative electrode plate body, an anode plate body and one group guide wall, and wherein this minus plate body forms one Organize first fluid groove spaced apart from each other, wherein this guiding wall be spaced apart this negative electrode plate body and this anode plate body it Between, so that the most adjacent two guiding walls form a second fluid groove being positioned between the two, wherein this negative electrode plate body This first fluid groove is set and is connected with this second fluid groove respectively, so that each first fluid groove and corresponding second Fluid slot forms at least one continuous print fluid passage, wherein this fluid passage have a first passage opening, one second Access portal and a third channel opening, wherein this anode plate body of this flow-field plate has at least one and is arranged on this anode The fuel channel in one outside of plate body, outside this of this anode plate body of the previous flow-field plate of the most adjacent two flow-field plate It is set towards this membrane electrode assembly being arranged between adjacent two flow-field plate, thus allows the fuel to by this fuel channel Being provided to this membrane electrode assembly, this third channel opening of this fluid passage of this negative electrode plate body of later flow-field plate is set Towards this membrane electrode assembly, so that this fluid passage allows fluid flowing this first passage opening in this fluid passage and is somebody's turn to do Between second channel opening, and it is provided to this membrane electrode assembly by this third channel opening.

Correspondingly, the present invention furthermore provides a kind of flow-field plate group for fuel cell, wherein this fuel cell Having at least one membrane electrode assembly, it includes at least two flow-field plate, and wherein this membrane electrode assembly of this fuel cell is set respectively Putting between adjacent two flow-field plate, the most each flow-field plate includes a negative electrode plate body, an anode plate body and one group of guiding Wall, wherein this minus plate body forms one group of first fluid groove spaced apart from each other, and wherein this guiding wall is spaced apart at this Between negative electrode plate body and this anode plate body, so that the most adjacent two guiding walls form a second being positioned between the two Body groove, wherein this first fluid groove of this negative electrode plate body is set and is connected with this second fluid groove respectively, so that each First fluid groove forms at least one continuous print fluid passage with corresponding second fluid groove, and wherein this fluid passage has one First passage opening, a second channel opening and a third channel opening, wherein this anode plate body of this flow-field plate has At least one is arranged on the fuel channel in an outside of this anode plate body, the previous stream of the most adjacent two flow-field plate Be set outside this of this anode plate body of field plate towards this fuel cell be arranged between adjacent two flow-field plate should Membrane electrode assembly, thus allow the fuel to be provided to this membrane electrode assembly by this fuel channel, this negative electrode of later flow-field plate This third channel opening of this fluid passage of plate body is set towards this membrane electrode assembly, so that this fluid passage allows stream Body flows between this first passage opening and this second channel opening of this fluid passage, and by this third channel opening quilt It is supplied to this membrane electrode assembly of this fuel cell.

The present invention furthermore provides a kind of fuel cell, and it includes at least one membrane electrode assembly and at least two flow-field plate, Wherein this membrane electrode assembly is separately positioned between adjacent two flow-field plate, the most each flow-field plate include a flow field plate body, One group first guide wall and one group second guide wall, wherein this flow field plate body has a cathode side and an anode-side, wherein This flow field plate body has at least one fuel channel being arranged on this anode-side, and wherein this first guides wall to be separated by turn up the soil and set Putting this cathode side at this flow field plate body, this second guiding wall extends from this first guiding wall respectively, so that adjacent two First guides wall to form a first fluid passage being positioned between the two, and the most adjacent two second guide wall to form one The individual second fluid passage being positioned between the two, wherein this first fluid passage is connected, the most often with this second fluid passage Individual first fluid passage has two first passage openings, and each second fluid passage has a second channel opening, wherein This anode-side of this flow field plate body of the previous flow-field plate of adjacent two flow-field plate is set towards being arranged on adjacent two This membrane electrode assembly between flow-field plate, thus allow the fuel to be provided to this membrane electrode assembly, and rear one by this fuel channel This second channel opening of this second fluid passage of this flow field plate body of individual flow-field plate is set being somebody's turn to do towards this fuel cell Membrane electrode assembly, so that this first fluid passage allows fluid to flow between this first passage opening of this fluid passage, And this membrane electrode assembly of this fuel cell it is provided to by this second channel opening of this second fluid passage.

Correspondingly, the present invention furthermore provides a kind of flow-field plate group for fuel cell, and wherein this fuel cell has At least one membrane electrode assembly, it includes at least two flow-field plate, and wherein this membrane electrode assembly of this fuel cell is separately positioned on Between adjacent two flow-field plate, the most each flow-field plate include a flow field plate body, one group first guide wall and one group second draw Leading wall, wherein this flow field plate body has a cathode side and an anode-side, and wherein this flow field plate body has at least one and set Putting the fuel channel in this anode-side, wherein this first guiding wall is spaced apart this cathode side at this flow field plate body, This second guiding wall extends from this first guiding wall respectively, so that adjacent two first guide walls formation one to be positioned at both Between first fluid passage, and the most adjacent two second guide walls to form one to be positioned at second fluids between the two and lead to Road, wherein this first fluid passage is connected with this second fluid passage, and the most each first fluid passage has two first Access portal, each second fluid passage has a second channel opening, the previous flow field of the most adjacent two flow-field plate This anode-side of this flow field plate body of plate is set towards this membrane electrode assembly being arranged between adjacent two flow-field plate, thus Allow the fuel to be provided to this membrane electrode assembly by this fuel channel, and this flow field plate body of later flow-field plate this second This second channel opening of fluid passage is set this membrane electrode assembly towards this fuel cell, so that this first fluid leads to Road allow fluid flow between this first passage opening of this fluid passage, and by this second fluid passage this second lead to Road opening is provided to this membrane electrode assembly of this fuel cell.

To be fully demonstrated by the understanding to description subsequently and accompanying drawing, further aim of the present invention and advantage.

The these and other objects of the present invention, feature and advantage, by following detailed description, drawings and claims are able to Fully demonstrate.

Accompanying drawing explanation

Figure 1A is the installation diagram of the flow-field plate group of pem fuel cell stack according to the preferred embodiment of the invention.

Figure 1B is another assembling of the flow-field plate group of the pem fuel cell stack according to the invention described above preferred embodiment Figure.

Fig. 2 A is the negative electrode of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment The top view of flow-field plate.

Fig. 2 B is the negative electrode of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment The upward view of flow-field plate.

Fig. 3 A is the anode of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment The top view of flow-field plate.

Fig. 3 B is the anode of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment The upward view of flow-field plate.

Fig. 4 illustrates this pem fuel cell stack according to the invention described above preferred embodiment, wherein this proton exchange Film fuel battery stack have employed above-mentioned flow-field plate group.

Fig. 5 A illustrates the cathode flow field plate of above-mentioned flow-field plate group and anode flow field board and according to the preferred embodiment of the invention should Pem fuel cell stack is stacked on top of one another together.

Fig. 5 B is the phantom of this pem fuel cell stack according to the invention described above preferred embodiment.

Fig. 5 C is the magnified partial view of this pem fuel cell stack according to the invention described above preferred embodiment.

Fig. 6 is the sectional view of this pem fuel cell stack according to the invention described above preferred embodiment.

Fig. 7 A illustrates this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment A kind of optional enforcement.

Fig. 7 B is this moon of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment The phantom of this optional enforcement of pole flow-field plate.

Fig. 7 C is this moon of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment The magnified partial view of this optional enforcement of pole flow-field plate.

Fig. 8 A illustrates this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment Another kind of optional enforcement.

Fig. 8 B is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The sectional view of this flow-field plate that choosing is implemented.

Fig. 8 C is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The top view of this negative electrode plate body of this flow-field plate that choosing is implemented.

Fig. 8 D is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The top view of this anode plate body of this flow-field plate that choosing is implemented.

Fig. 8 E is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The upward view of this negative electrode plate body of this flow-field plate that choosing is implemented.

Fig. 8 F is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The upward view of this anode plate body of this flow-field plate that choosing is implemented.

Fig. 9 A illustrates this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment Another kind of optional enforcement.

Fig. 9 B is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The sectional view of this flow-field plate that choosing is implemented.

Fig. 9 C is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The top view of this gripper shoe of this flow-field plate that choosing is implemented.

Fig. 9 D is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The top view of this flow field plate body of this flow-field plate that choosing is implemented.

Fig. 9 E is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The upward view of this gripper shoe of this flow-field plate that choosing is implemented.

Fig. 9 F is that this of this flow-field plate group of this pem fuel cell stack according to the invention described above preferred embodiment can The upward view of this flow field plate body of this flow-field plate that choosing is implemented.

Detailed description of the invention

Described below it is disclosed for so that those skilled in the art can manufacture and use the present invention.Middle offer described below preferable Embodiment is only used as example and the amendment that will be apparent to those skilled in the art, and it is not intended that the limit to the scope of the invention System.General Principle defined in described below can without departing substantially from the present invention spirit and invention scope be applied to other embodiments, Optional replacement, revise, be equal to enforcement and application.

With reference to Figure 1A to Fig. 6 of accompanying drawing, it is elucidated with according to the proton exchange fuel cell heap of present pre-ferred embodiments.This matter Son exchange fuel cell pack includes one or more cell of fuel cell being stacked together.Preferably implement according to the present invention Example, each cell of fuel cell of this proton exchange fuel cell heap can be formed as a single fuel cell, and it includes One membrane electrode assembly 10 and a flow-field plate group 20, wherein this flow-field plate group 20 includes that two bipolar plates conducted are to incite somebody to action This membrane electrode assembly 10 is clipped between the two.

This membrane electrode assembly 10 includes a polymer dielectric film, and coats the catalysis of these polymer dielectric film both sides Agent.Two gas diffusion layers lay respectively at two lateral surface of this membrane electrode assembly 10 of this membrane electrode assembly, wherein this gas diffusion layers It is maintained between this conductive bipolar plate of this flow-field plate group 20, to form a stacks of cells.

As shown in Figure 1A to Fig. 6 of accompanying drawing, this is used for clamping this membrane electrode assembly 10 in this flow-field plate group 20 between the two This conductive bipolar plate be an anode flow field board 21' and a cathode flow field plate 21.In other words, this flow-field plate group 20 Including an anode flow field board 21 ' and a cathode flow field plate 21, and this membrane electrode assembly 10 is sealed and is clipped in this anode stream Between field plate 21 ' and this cathode flow field plate 21, wherein this cathode flow field plate 21 has an inner side and an outside, wherein Inside this of this cathode flow field plate 21 formed a planar side 211, and this cathode flow field plate 21 this outside formed one lead to Side, road 212, wherein this planar side 211 of this cathode flow field plate 21 is set towards this membrane electrode assembly 10, wherein this negative electrode Flow-field plate 21 has one group of fluid passage 213 being formed at this channel side 212, the most each fluid passage 213 further It is outside this of this cathode flow field plate 21 penetrating type passage extended to inside this of this cathode flow field plate 21, so that stream Body can flow to this membrane electrode assembly 10 along this fluid passage 213, thus promotes that electrochemical reaction passes this membrane electrode assembly 10 Life and generation electric energy.In other words, each fluid passage 213 can extend from this planar side 211 of this cathode flow field plate 21 To this channel side 212 of this cathode flow field plate 21, so that fluid can flow to this membrane electrode along this fluid passage 213 Group 10.Especially, this fluid passage 213 is penetrating type passage, for guiding fluid from the limit of this cathode flow field plate 21 Edge flow to this cathode flow field plate 21 this inside, towards this membrane electrode assembly 10 inside this of wherein this cathode flow field plate 21. Correspondingly, this fluid is reacting gas, such as air.

It is understood that this fuel cell pack of the Proton Exchange Membrane Fuel Cells in actually used includes that multiple stacking is single Unit's fuel set, according to electric consumption requirement, its quantity may be hundreds of.Therefore, an exemplary fuel cell stack includes one The repetition battery unit set of series.This cathode flow field plate 21 (or anode flow field board 21') can be by light and firm conduction Material is constituted.This fluid passage 213 extends to the whole side edge length of this cathode flow field plate 21 and extends by the default degree of depth To this cathode flow field plate 21.It is grand that this same this most cleaved cathode flow field plate 21 in fluid passage 213 forms ridge shape The portion of rising, and these ridge shape juts are distribution separatedly, equably.

Such as Fig. 2 A and Fig. 2 B of accompanying drawing, each fluid passage 213 is an elongated channel, so that two passages are opened Mouth is respectively formed at two edges of this cathode flow field plate 21.Therefore, this fluid will flow to this fluid from this access portal Passage 213 and this channel side 212 through this cathode flow field plate 21 flow to this planar side 211 of this cathode flow field plate 21, To arrive this membrane electrode assembly 10.

Such as Fig. 2 B and Fig. 6 of accompanying drawing, this cathode flow field plate 21 has one group of cooling duct 217 further, and wherein this is cold But passage 217 aligns with this fluid passage 213 respectively, when flowing along this fluid passage 213 when this fluid, to make this The heat of cathode flow field plate 21 is dispelled the heat.Preferably, this cooling duct 217 is for be formed uniformly wearing at this cathode flow field plate 21 Type passage thoroughly, to align with this fluid passage 213 respectively.

Such as Fig. 2 A to Fig. 3 B of accompanying drawing, this cathode flow field plate 21 includes a negative electrode plate body 214 and two contrary ends Portion, two first ends 215, wherein this negative electrode plate body 214 extends between two first ends 215, wherein this negative electrode Plate body 214 includes that two transverse edges 2141 and one group guide wall 216, and wherein this guiding wall 216 is separated by turn up the soil and extends in Between two transverse edges 2141, the guiding wall 216 that wherein each two is adjacent formed this fluid passage 213 and with this fluid Between, the most each cooling duct 217 is set along this fluid passage in the cooling duct 217 that passage 213 is connected 213, so that this fluid can flow through this cooling duct 217.Preferably, this first end of this cathode flow field plate 21 215 and two transverse edges 2141 of this negative electrode plate body 214 form of this planar side 211 of this cathode flow field plate 21 Continuous sealing plane 2110, so that when this fuel cell pack is stacked, this planar side 211 of this cathode flow field plate 21 A flat support can be provided, so that this membrane electrode assembly 10 can be pressed on this anode flow field board for this membrane electrode assembly 10 21′。

As shown in Fig. 2 A and Fig. 6 of accompanying drawing, each guiding wall 216 include one high-end 2161 and one from this high-end 2161 The low side 2162 downwardly extended, what wherein each two was adjacent guides wall 216 to be formed at its this fluid between high-end 2161 Passage 213 and this cooling duct 217 formed between its low side 2162.Therefore, this cooling duct 217 and this stream Body passage 213 is connected to be formed a penetrating type passage, and wherein this penetrating type passage allows fluid to flow through this cooling duct 217 and this fluid passage 213.Alternatively, this low side 2162 be longer than this high-end 2161 so that this cooling duct 217 Length be longer than the length of this fluid passage 213.

It is understood that this fluid passage 213 being positioned at this cathode flow field plate 21 be connected with this cooling duct 217 with Forming a this structure completely penetrating through type passage (or groove) can make this cooling duct 217 realize fuel cell pack of the present invention Heat sinking function while, play and external reaction active fluid guided to the effect of this fluid passage 213.Further, This cooling duct 217 of this cathode flow field plate 21 realizes supply and the dual-use function of heat radiation, and this cathode flow field plate 21 should First end 215, two transverse edges 2141 of this negative electrode plate body 214 have bigger connecing with this membrane electrode assembly 10 Contacting surface, so that fuel cell pack of the present invention has more preferable radiating effect and reduces rotation speed of the fan sensitivity.Correspondingly, with Lifting and the reduction of rotation speed of the fan sensitivity of cooling effect, under equal-wattage exports, need structure relative to prior art The larger fuel cell built, the overall volume of this fuel cell and weight all can be lowered.Additionally, the present invention this is cold But the structure of passage 217 can reduce the thickness of this cathode flow field plate 21.If the fluid passage of traditional cathode flow field plate sets Being calculated as the 3mm degree of depth, the most traditional cathode flow field plate needs at least 4mm thickness, to keep the mechanical strength of cathode flow field plate With guarantee radiating efficiency.And if cathode flow field plate of the present invention 21, then when its fluid passage 213, to be arranged to 3mm deep When spending, the thickness of this cathode flow field plate 21 then can be configured to less than 4mm.In other words, this cooling duct 217 can be as this The configuration of a part for fluid passage 213 so that the thickness of this cathode flow field plate 21 can be lowered.It is to say, in reality During existing identical area of dissipation, this cathode flow field plate 21 of the present invention can more traditional template thinner；Because when fluid is by this stream During body passage 213, the whole cross section of this cathode flow field plate 21 can be used as heat radiation by this cooling duct 217 of the present invention. Therefore, under more traditional template same thickness, this cathode flow field plate 21 of the present invention can provide more for heat radiation Heat dissipation region.

As shown in Fig. 3 A and Fig. 3 B of accompanying drawing, this anode flow field board 21 ' of this flow-field plate group 20 has an inner side and Individual outside, is wherein planar side inside and outside this anode flow field board 21 '.One is formed inside this of this anode flow field board 21 ' Individual channel side 212 ' and one planar side 211 ' of formation, wherein this channel side 212 ' formation of this anode flow field board 21 ' outside this At least one fuel channel 213 ', wherein this fuel channel 213 ' is towards this membrane electrode assembly 10 so that fuel, such as hydrogen fuel, This membrane electrode assembly 10 can be provided to by this fuel channel 213 '.This fuel channel 213 ' caves at this anode flow field board 21 ' This channel side 212 '.Preferably, this anode flow field board 21 ' includes an anode plate body 214 ' and two contrary ends, Two the second ends 215 ', wherein this anode plate body 214 ' extends between two the second ends 215 ', wherein this anode flow field This anode plate body 214 ' of plate 21 ' and this second end 215 ' form this channel side being formed at this anode flow field board 21 ' The continuous sealing plane 2120 ' of 212 '.In other words, when this fuel cell pack is stacked, this moon of this flow-field plate group 20 This planar side 211 of pole flow-field plate 21 and this channel side 212 ' of this anode flow field board 21 ' can be respectively this membrane electrode assembly 10 provide flat supports, and make this of this planar side 211 of this cathode flow field plate 21 and this anode flow field board 21 ' lead to Side, road 212 ' can be pressed on this membrane electrode assembly 10 hermetically.

Such as Figure 1A, Figure 1B and Fig. 4 of accompanying drawing, this flow-field plate group 20 farther includes a sealing gasket 22, wherein should Sealing gasket 22 is arranged on this membrane electrode assembly 10 and this anode flow field board 21 ', and wherein this sealing gasket 22 is arranged on this anode This channel side 212 ' of flow-field plate 21 '.

Such as Fig. 2 A to Fig. 4 of accompanying drawing, when this fuel cell is stacked, the most adjacent two fuel cells are mutually assembled in Together, and this negative electrode of this planar side 211 ' and next fuel cell of this anode flow field board 21 ' of previous fuel cell This channel side 212 phase of flow-field plate 21 couples, this planar side of this anode flow field board 21 ' of the most previous fuel cell 211 ' and this channel side 212 of this cathode flow field plate 21 of next fuel cell form two fluids being positioned between the two Runner 2150, wherein this fluid course 2150 is connected with this fuel channel 213 ' respectively, to allow the fuel to from a stream Body runner 2150 flows to another fluid course 2150 by this fuel channel 213 '.

Such as Fig. 2 A to Fig. 4 of accompanying drawing, each fluid course 2150 there is first opening 21501 ' and one second open Mouthfuls 21502 ', wherein this first opening 21501 ' and this second opening 21502 ' be both formed in this anode flow field board 21 ' this Two ends 215 ', wherein this sealing gasket 2150 is arranged on this channel side 212 ' of this anode flow field board 21 ' and around this fluid This first opening 21501 ' and this second opening 21502 ' of runner 2150, to prevent fuel from this membrane electrode assembly 10 and this sun Air gap leakage between this channel side 212 ' of pole flow-field plate 21 '.Such as Fig. 2 A to Fig. 4 of accompanying drawing, each fuel channel 213 ' It is connected with two fluid courses 2150 respectively, to allow the fuel can be from a fluid course 2150 by this fuel channel 213 ' flow to another fluid course 2150.Correspondingly, this first opening 21501 ' of this fluid course 2150 and this second Opening 21502 ' is penetrating type hole and the quilt of two two the second ends 215 ' being respectively formed at this anode flow field board 21 ' respectively Setting is mutually aligned.Especially, each fuel channel 213 is arranged on this second end 215 ' of this anode flow field board 21 ' Between and there is a serpentine configuration, flow through distance with extend fuel, the two ends of the most each fuel channel 213 ' respectively with This second opening 21502 ' is connected, as shown in Fig. 3 B of accompanying drawing.In other words, fuel is guided through this fuel channel 213 ' flowings are between two these the second openings 21502 ' of this second end 215 ' of this anode flow field board 21 '.Alternatively, Fuel channel 213 ' also can be provided having other suitable shape.

Such as Fig. 2 A to Fig. 4 of accompanying drawing, each fluid course 2150 is formed at this channel side 212 of this cathode flow field plate 21, Wherein each first end 215 of this cathode flow field plate 21 has one further and is set around this fluid course 2150 Seal groove 21502.Correspondingly, this seal groove 21502 is this channel side 212 being formed at this cathode flow field plate 21 Groove with around this fluid passage 2150.This flow-field plate group 20 farther includes two sealing rings 23, wherein this sealing ring 23 are separately positioned on this seal groove 21502 to prevent fuel this planar side 211 ' from this anode flow field board 21 ' and this negative electrode Air gap leakage between this channel side 212 of flow-field plate 21.

Such as Fig. 2 A to Fig. 4 of accompanying drawing, each fluid course 2150 has one further and is formed at this cathode flow field plate 21 The 3rd opening 21501 of this first end 215, wherein the 3rd opening 2501 is through this cathode flow field plate 21.It is worth It is noted that when one group of fuel cell is stacked on top of one another together to form a fuel cell pack, this cathode flow field plate 3rd opening 21501 of this first end 215 of 21 and this second end 215 ' of this anode flow field board 21 ' corresponding This second opening 21502 ' formed a fuel flow channel 200 so that hydrogen fuel can be by this combustion of this fuel cell pack Stream road 200 is provided.

Alternatively, this fluid course 2150 is respectively formed at this planar side 211 ' of this anode flow field board 21 ' and two sealings Groove 21502 is set respectively around this fluid course 2150, and wherein this flow-field plate group 20 farther includes two sealing rings 23, Wherein this sealing ring 23 is separately positioned on this seal groove 21502 to prevent fuel this planar side from this anode flow field board 21 ' Air gap leakage between 211 ' and this channel side 212 of this cathode flow field plate 21.

As shown in Fig. 3 B of accompanying drawing, according to this sealing of this battery unit of this fuel cell pack of present pre-ferred embodiments Pad 22 is that a hollow-core construction is to realize the periphery that hermetic unit is positioned at this channel side 212 ' of this anode flow field board 21 '.In other words, This sealing gasket 22 be a hollow structure to realize fluid, such as gas, pass therethrough.This sealing gasket 22 be set further with The size and dimension that the channel side 212 ' of this anode flow field board 21 ' matches.As shown in Figure 3 B, the sealing of this sealing gasket 22 Part is respectively set at this second end 215 ' and this anode plate body 214 ' of this anode flow field board 21 ', close to form one Flow for hydrogen in closed loop border.It is understood that this fuel channel 213 ' is not hidden by this sealing gasket 22.

Fig. 3 B of accompanying drawing also show the fuel cell stack design of the preferred embodiment for the present invention, and which kind of the most no matter uses close Envelope mode, such as cohesive pad, then this cohesive pad is in squeezed state.It is noted that due to this membrane electrode assembly Sealed by this sealing gasket 22 between 10 and the planar side 211,212 ' of this negative and positive bipolar flow field plate 21,21 ', define one Individual closed environment flows for hydrogen, so that the channel side 212 ' of this anode flow field board 21 ' is sealed and to prevent hydrogen seepage. Correspondingly, this sealing gasket 22 of the present invention can be a ring limit packing ring or cohesive packing ring.This sealing gasket 22 is preferably by flexibility The gasket structure that material is made, it is arranged on this channel side 212 ' of this anode flow field board 21 ', to prevent battery pile work When making, there is hydrogen leakage.Therefore, this flow-field plate group 20 only needs a sealing gasket 22 can realize its cathode flow field plate Sealing between planar side 211 and the channel side 212 ' of anode flow field board 21 ' of 21.

When this flow-field plate (cathode flow field plate 21) 21 uses as the cathode flow field plate of fuel cell, this cathode flow field plate The planar side 211 of 21 is mounted to this membrane electrode assembly 10.This proton exchange membrane fuel cell is configured to open in air, Therefore, oxidant, as air (or oxygen) is blown into this fluid passage 213 by this cathode flow field plate 21.This cooling The structure of passage 217 improves air cooling effectiveness, because heat is dissipated by this cooling duct 217 and is separated.This is cold But passage 217 enhances radiating effect and this cathode flow field plate 21 can be made thinner compared to traditional.More thin and light combustion That expects battery pile can make it compared to prior art more portability.

Especially, this cooling duct 217 from this cathode flow field plate 21 molding to reduce quick to rotation speed of the fan of thin film water content Sensitivity.This cooling duct 217 the most each fluid passage 213 molding.When gas is cold through this of this cathode flow field plate 21 But, when passage 217 and this fluid passage 213, air-flow will only be taken away from this cathode flow field plate 21 by this cooling duct 217 Heat.This cooling duct 217 and this fluid passage 213 will keep the water content of this membrane electrode assembly 10, because cold by this But the radiating airflow of passage 217 does not directly contact with this membrane electrode assembly 10.Therefore, when rotation speed of the fan speeds or slows down, Only have fraction and directly affect this membrane electrode assembly 10 water content, but all air-flows all have cooling effect.In other words, this combustion The cell voltage of material battery becomes more low sensitivity relative to rotation speed of the fan.

Additionally, this cathode flow field plate 21 that the present invention provides can provide heat and the water management of fuel cell equally.Correspondingly, This membrane electrode assembly 10 needs water content higher to maintain low internal resistance.When gas is blown into and during by this fluid passage 213, and it is only Cooling down through this cooling duct 217, this cathode flow field plate 21 does not accelerate water evaporation, to prevent this membrane electrode assembly 10 water content Reduce.

It is noted that the difference between fuel cell pack can be made according to this free flow field plate group 20 of present pre-ferred embodiments Less.In other words, use, between the fuel cell of flow-field plate group 20 of the present invention, there is homogeneity.Therefore, the present invention carries The fuel cell pack of confession is easier to realize the homogeneity of cell voltage because using higher hydrogen pressure.

Fig. 7 A to Fig. 7 C of accompanying drawing illustrates this flow-field plate group 20 of this fuel cell pack according to present pre-ferred embodiments The optional enforcement of one of this cathode flow field plate 21, wherein this flow-field plate group 20A includes a cathode flow field plate 21A and Individual anode flow field board 21 ', wherein this cathode flow field plate 21A has planar side 211A and channel side 212A, and Including a negative electrode plate body 214A and two contrary ends, two first end 215A, wherein this negative electrode plate body 214A Extend between this first end 215A, wherein this negative electrode plate body 214A include two transverse edge 2141A and one group draw Leading wall 216A, wherein this guiding wall 216A is spaced apart respectively between this transverse edge 2141A, the most often Two adjacent 216A form a fluid passage 213A being positioned between the two, and each guiding wall 216A forms one Cooling duct 217A, wherein this cooling duct 217A is formed at this channel side 212A of this cathode flow field plate 21, wherein Each this cooling duct 217A extends to another transverse edge from a transverse edge 2141A of this negative electrode plate body 214A 2141A, enables fluid to flow through this cooling duct 217A.Preferably, each first end of this negative electrode plate body 21A 215A forms a fluid course 2150A, and wherein this fluid passage 2150A has a 3rd opening 21501A and Individual seal groove 21502A.

Fig. 8 A to Fig. 8 F of accompanying drawing illustrates this flow-field plate group 20 of this fuel cell pack according to present pre-ferred embodiments The optional enforcement of another kind, wherein this flow-field plate group 20C includes at least two flow-field plate 21C, the most each flow-field plate 21C Wall 213C, wherein this negative electrode plate body 211C is guided including a negative electrode plate body 211C, an anode plate body 212C and one group Forming one group of first fluid groove 2110C spaced apart from each other, wherein this guiding wall 213C is spaced apart at this minus plate Between body 211C and this anode plate body 212C so that the most adjacent two guiding wall 213C formed one be positioned at both it Between second fluid groove 2130C, wherein this first fluid groove 2110C of this negative electrode plate body 211C be set respectively with this Second fluid groove 2130C aligns and is connected, so that each first fluid groove 2110C and corresponding second fluid Groove 2130C forms a continuous print fluid passage 214C, and wherein this fluid passage 214C has a first passage opening 2141C, a second channel opening 2142C and a third channel opening 2143C, wherein this fluid passage 214C This third channel opening 2143C is set towards this membrane electrode assembly 10, so that this fluid passage 214C allows reaction Active substance fluid, as the flowing such as air, oxygen this first passage opening 2141C of this fluid passage 214C and this Between two access portal 2142C, and it is provided to this membrane electrode assembly 10 by this third channel opening 2143C.Preferably, The length of this first fluid groove 2110C length more than this second fluid groove 2130C, and this first fluid groove 2110C The width width less than this second fluid groove 2130C.

As shown in Fig. 8 A to Fig. 8 F of accompanying drawing, each flow-field plate 21C has a first passage side 215C and one Two channel side 216C, wherein this first passage side 215C of this negative electrode plate body 211C is formed at this negative electrode plate body 211C's One outside, this second channel side 216C of this anode plate body 212C is formed at an outside of this anode plate body 212C, Wherein this flow-field plate 21C has the fuel channel of at least one this second channel side 216C being arranged on this flow-field plate 21C 217C, and this second channel side 216C of this flow-field plate 21C is set towards this membrane electrode assembly 10, so that fuel, Such as hydrogen, this membrane electrode assembly 10 can be provided to by this fuel channel 217C.In other words, this negative electrode plate body 211C This first fluid groove 2110C be formed at outside this of this negative electrode plate body 211C, this fuel of this anode plate body 212C lead to Road 217C be formed at this anode plate body 212C this outside.

As shown in Fig. 8 A of accompanying drawing, according to this flow-field plate group 20C of this fuel cell of present pre-ferred embodiments include to Few two flow-field plate 21C, the most each membrane electrode assembly 10 is arranged on previous flow-field plate 21C in adjacent two flow-field plate This second channel side 216C and this first passage side 215C of later flow-field plate 21C between.In other words, adjacent This second channel side 216C of previous flow-field plate 21C in two flow-field plate, later flow-field plate 21C this first lead to Side, road 215C and this membrane electrode assembly 10 form a battery unit.

As shown in Fig. 8 B to Fig. 8 F of accompanying drawing, this guiding wall 213C of each flow-field plate 21C of this flow-field plate group 20C It is arranged on an inner side of this anode plate body 212C, and extends inside this of this anode plate body 212C.Preferably, This guiding wall 213C of this flow-field plate 21C is one-body molded with this anode plate body 212C.It is highly preferred that this flow-field plate group 20C This negative electrode plate body 211C of this flow-field plate 21C be removably disposed in this guiding wall 213C.

As shown in Fig. 8 A to Fig. 8 F of accompanying drawing, this negative electrode plate body 211C of this flow-field plate 21C of this flow-field plate group 20C There is the holding tank 218C of an inner side being formed at this negative electrode plate body 211C, the wherein shape of this holding tank 218C It is set according to this guiding wall 213C of this flow-field plate 21C with size, with can be by this guiding wall 213C of this flow-field plate 21C Accommodate in the inner, and make this second fluid groove 2130C that this guiding wall 213C formed respectively with this negative electrode plate body 211C's This first fluid groove 2110C aligns and is connected, thus forms this fluid passage 214C.It is highly preferred that this holding tank The degree of depth of 218C is identical with the height of this guiding wall 213C of this flow-field plate 21C, so that this of this flow-field plate 21C Guide the wall 213C can be by suitable this holding tank 218C being contained in this negative electrode plate body 211C.

As shown in Fig. 8 A to Fig. 8 F of accompanying drawing, this negative electrode plate body 211C of this flow-field plate 21C of this flow-field plate group 20C Including two contrary ends, two first end 2111C, two each extended between this first end 2111C One transverse edge 2112C and first forming portion 2113C being longitudinally extended between this first transverse edge 2112C, Wherein this first forming portion 2113C is formed and extends in the first fluid groove 2110C between this first transverse edge 2112C, Wherein this first end 2111C of this negative electrode plate body 211C and this first transverse edge 2112C is in this flow-field plate 21C This first passage side 215C forms continuous sealing plane 2150C, and wherein this continuous sealing plane 2150C is set ring This first forming portion 2113C around this negative electrode plate body 211C；This anode plate body 212C of this flow-field plate 21C includes two Contrary end, two the second end 2121C, two second each extended between this second end 2121C are horizontal Edge 2122C and second forming portion 2123C being longitudinally extended between this second transverse edge 2122C, wherein This second forming portion 2123C is formed and extends in the fuel channel 217C between this second end 2121C, wherein this positive plate This second end 2121C of body 212C and this second transverse edge 2122C is in this second channel side of this flow-field plate 21C 216C forms continuous sealing plane 2160C, and wherein this continuous sealing plane 2160C is set around this anode plate body This second forming portion 2123C of 212C so that when this fuel cell pack is stacked, this flow-field plate 21C this One channel side 215C and this second channel side 216C can be respectively this membrane electrode assembly 10 provides a flat support, and makes This first passage side 215C and this second channel side 216C of this flow-field plate 21C can be pressed on this membrane electrode assembly hermetically 10。

It is understood that be positioned at this first fluid groove 2110C of this negative electrode plate body 211C of this flow-field plate 21C and be somebody's turn to do Second fluid groove 2130C is connected to form a this structure completely penetrating through type fluid passage 214C (or groove) can be made While this second fluid groove 2130C realizes the heat sinking function of fuel cell pack of the present invention, play external reaction activity stream Body guides the effect to this first fluid groove 2110C.Further, this second fluid groove 2130C of this flow-field plate 21C Realize supply and the dual-use function of heat radiation, and this first end 2111C and this transverse edge 2112C of this negative electrode plate body 211C With this membrane electrode assembly 10, there is a bigger contact surface, so that fuel cell pack of the present invention has more preferable radiating effect With reduction rotation speed of the fan sensitivity.Correspondingly, along with lifting and the reduction of rotation speed of the fan sensitivity of cooling effect, identical Under power output, need the larger fuel cell built relative to prior art, the overall volume of this fuel cell and weight Amount all can be lowered.Additionally, the structure of this fluid passage of present invention 214C can reduce negative electrode plate body 211C (or negative electrode Flow-field plate) thickness.If the fluid channel design of traditional cathode flow field plate is the 3mm degree of depth, the most traditional cathode system Field plate needs at least 4mm thickness, to keep the mechanical strength of cathode flow field plate and to guarantee radiating efficiency.And if the present invention Negative electrode plate body 211C, then when its fluid passage 214C is arranged to the 3mm degree of depth, the thickness of this negative electrode plate body 211C Then can be configured to less than 4mm.In other words, this second fluid groove 2130C can be as a part of this fluid passage 214C Configuration so that the thickness of this negative electrode plate body 211C can be lowered.It is to say, when realizing identical area of dissipation, this Invention this negative electrode plate body 211C can more traditional cathode flow field plate thinner；Because when fluid is by this fluid passage 214C Time, the whole cross section of this negative electrode plate body 211C can be used as heat radiation by this second fluid groove 2130C of the present invention.Therefore, Under more traditional template same thickness, this negative electrode plate body 211C of the present invention can provide more for the radiating area of heat radiation Territory.

As shown in Fig. 8 A to Fig. 8 F of accompanying drawing, this negative electrode plate body 211C of this flow-field plate 21C of this flow-field plate group 20C Each first end 2111C there is first open communication 21110C, each second end of this anode plate body 212C Portion 2121C has second open communication 21210C, wherein this first end 2111C of this negative electrode plate body 211C This first open communication 21110C respectively with this second end 2121C of corresponding this anode plate body 212C this second Open communication 21210C is connected and forms a fuel flow channel 200C, wherein each fuel channel of this flow-field plate 21C The two ends of 217C are connected with this fuel flow channel 200C respectively, so that hydrogen fuel can being somebody's turn to do by this fuel cell pack This fuel flow channel 200C of this flow-field plate 21C of flow-field plate group 20C is provided.

As shown in Fig. 8 A to Fig. 8 F of accompanying drawing, the sealing between adjacent two flow-field plate 21C of this flow-field plate group 20C can Being implemented by a sealing gasket 22C, wherein this sealing gasket 22C is a hollow-core construction, and the sealing of this sealing gasket 22C Be partially disposed within previous flow-field plate 21C this anode plate body 212C this outside periphery.In other words, this sealing gasket 22C be a hollow structure to realize fluid, such as gas, pass therethrough.This sealing gasket 22C is set and this sun further The size and dimension matched outside this of pole plate body 212C.As shown in Fig. 8 A to Fig. 8 F, this sealing gasket 22C is respectively Be arranged on previous flow-field plate 21C of two adjacent flow field plates 21C this anode plate body 212C this outside, wherein should Sealing gasket 22C is a hollow-core construction, and the hermetic unit of this sealing gasket 22C is arranged on being somebody's turn to do of previous flow-field plate 21C Between this negative electrode plate body 211C of anode plate body 212C and later flow-field plate 21C, the periphery with this membrane electrode assembly 10 is set Put between the hermetic unit and this anode plate body 212C of previous flow-field plate 21C of this sealing gasket 22C, so that front This anode plate body 212C of one flow-field plate 21C, this negative electrode plate body 211C of later flow-field plate 21C and this membrane electrode Group 10 formation one seals space, flows for fuel.Further, the two ends of this sealing gasket 22C are set individually This end of this anode plate body 212C and this cathode system of corresponding later flow-field plate 21C in previous flow-field plate 21C Between this end of field plate 211C, wherein this sealing gasket 22C is set respectively around this anode of previous flow-field plate 21C Two first open communication 21110C of plate body 212C and the two of this cathode flow field plate 211C of later flow-field plate 21C Individual second open communication 21210C, so that when this fuel cell is assembled and this sealing gasket 22C is compressed in two streams Time between field plate 21C, this anode plate body 212C of previous flow-field plate 21C and this negative electrode of later flow-field plate 21C Plate body 211C is stacked together hermetically, to prevent the fuel this anode plate body 211C from previous flow-field plate 21C And the air gap leakage between this negative electrode plate body 211C of later flow-field plate 21C.It is understood that this fuel channel 217C is not hidden by this sealing gasket 22C.Preferably, this sealing gasket 22C is further provided within this negative electrode plate body 211C Two ends and around this fuel channel 217C of this anode plate body 212C, seal space for hydrogen stream forming one Dynamic.In other words, this fuel channel 217C is not hidden by this sealing gasket 22C.

As shown in Fig. 8 B of accompanying drawing, this negative electrode plate body 211C of this flow-field plate 21C of this flow-field plate group 20C this One end 2111C is by respectively and be sealingly disposed in this second end 2121C of this anode plate body 212C, to prevent hydrogen Fuel is by this first end 2111C of this negative electrode plate body 211C of this flow-field plate 21C of this flow-field plate group 20C and phase Air gap leakage between this second end 2121C of this anode plate body 212C answered.Therefore, this flow-field plate group 20C should This first end 2111C of this negative electrode plate body 211C of flow-field plate 21C and corresponding this anode plate body 212C this second End 2121C is mutually coupled together hermetically, to prevent this first end 2111C and the phase of this negative electrode plate body 211C This second end 2121C of this anode plate body 212C answered is formed and is positioned at being connected with this fuel flow channel 200C between the two The formation in logical space.This first end 2111C of this negative electrode plate body 211C of this flow-field plate 21C and this anode corresponding Sealing between this second end 2121C of plate body 212C can by one be set around this negative electrode plate body 211C should This first open communication 21110C of first end 2111C (or this second end around corresponding this anode plate body 212C This second open communication 21210C of portion 2121C) sealing ring or sealing gasket 23C and be implemented.In other embodiments In, this first end 2111C of this negative electrode plate body 211C and this second end 2121C of corresponding this anode plate body 212C Between seal by by this first end 2111C of this negative electrode plate body 211C and corresponding this anode plate body 212C should The second end 2121C fits tightly and is implemented together.In other embodiments, this negative electrode plate body 211C this first Sealing between this second end 2121C of end 2111C and accordingly this anode plate body 212C is by using glue or viscous Attached dose of this first end 2111C by this negative electrode plate body 211C and this second end of corresponding this anode plate body 212C 2121C adheres to each other and is implemented.

Fig. 9 A to Fig. 9 F of accompanying drawing illustrates this flow-field plate group 20D of this fuel cell pack according to present pre-ferred embodiments The optional enforcement of another kind, wherein this flow-field plate group 20D includes at least two flow-field plate 21D, the most each flow-field plate 21D Including a flow field plate body 211D, one group first guide wall 212D and one group second guide wall 213D, wherein this flow-field plate Body 211D has a cathode side 2111D and anode-side 2112D, and wherein this flow field plate body 211D has at least one The individual fuel channel 215D being arranged on this anode-side 2112D, wherein this first guiding wall 212D is spaced apart At this cathode side 2111D of this flow field plate body 211D, this second guiding wall 213D is respectively from this first guiding wall 212D Extend, so that the most adjacent two first guide wall 212D to form a first fluid passage being positioned between the two 216D, and the most adjacent two second guiding wall 213D one second fluid passage 217D being positioned between the two of formation, Wherein this first fluid passage 216D is connected with this second fluid passage 217D, the most each first fluid passage 216D There are two first passage opening 2161D, each second fluid passage 217D there is a second channel opening 2171D, Wherein this second channel opening 2171D of this second fluid passage 217D is set towards previous membrane electrode assembly 10, from And make this first fluid passage 216D allow reactivity material, can flow at this first fluid such as air or oxygen etc. Passage 216D and enable reactivity material this second channel opening 2171D quilt by this second fluid passage 217D It is supplied to this membrane electrode assembly 10；Wherein this fuel channel 215D of this flow field plate body 211D is set towards later film electricity Pole group 10, so that hydrogen fuel can be provided to this membrane electrode assembly 10 by this fuel channel 215D.

It is understood that this first fluid passage 216D allows the fluids such as air or oxygen from a first passage opening 2161D flows to another first passage opening 2161D, and therefore, this first fluid passage 216D is in this membrane electrode assembly 10 mutually While reactivity material is provided, also there is cooling effect.Preferably, the length of this first fluid passage 216D is more than The length of this second fluid passage 217D, and the width of this first fluid passage 216D is less than this second fluid passage 217D Width.

As shown in Fig. 9 A of accompanying drawing, this flow-field plate group 20D includes at least two flow-field plate 21D, wherein this fuel cell Each membrane electrode assembly 10 of the cell of fuel cell of heap be arranged on this flow-field plate group 20D adjacent two flow-field plate 21D it Between, this second fluid passage 217D of previous flow-field plate 21D of the most adjacent two flow-field plate 21D and later stream This fuel channel 215D of field plate 21D is set individually towards this membrane electrode assembly 10, so that reactivity material, Such as air, and fuel, such as hydrogen, it is possible to carried by this second fluid passage 217D and this fuel channel 215D respectively Supply this membrane electrode assembly 10.

As shown in Fig. 9 A to Fig. 9 F of accompanying drawing, each flow-field plate 21D of this flow-field plate group 20D farther includes one Gripper shoe 214D, wherein this gripper shoe 214D is arranged on this first guiding wall 212D, wherein this gripper shoe 214D shape Become a holding tank 2140D, and when this gripper shoe 214D is arranged on this first guiding wall 212D, this flow-field plate 21D This second guide wall 213D be accommodated in this holding tank 2140D of this gripper shoe 214D.In other words, this flow field The height of this second guiding wall 213D of plate 21D is not more than the degree of depth of this holding tank 2140D of this gripper shoe 214D, from And this second guiding wall 213D of this flow-field plate 21D is accommodated in this holding tank 2140D of this gripper shoe 214D. Preferably, the length of this first guiding wall 212D of this flow-field plate 21D of this flow-field plate group 20D is more than this second guiding The length of wall 213D, so that this gripper shoe 214D can be arranged on this first guiding wall 212D.It is highly preferred that This second guiding wall 213D extends from the mid portion of this first guiding wall 212D, so that the two of this gripper shoe 214D Individual first transverse edge 2142D all can be arranged on the top of this first guiding wall 212D.Most preferably, this gripper shoe 214D is removably disposed in this first guiding wall 212D.

It should be noted that this optional reality of this flow-field plate group 20D of this fuel cell pack according to present pre-ferred embodiments This gripper shoe 214D executed plays assembling supporting role in fuel cell pack of the present invention.In other words, this flow-field plate group 20D This gripper shoe 214D of this flow-field plate 21D can be not related to provide reactivity material or fuel to membrane electrode assembly 10.Cause This, this gripper shoe 214D of this flow-field plate 21D of this flow-field plate group 20D can be made up of nonconducting rigid material.Also That is, this gripper shoe 214D of this flow-field plate 21D of this flow-field plate group 20D can be by having high intensity and low weight material Material is made, to reduce the weight--to-power ratio of this fuel cell pack.

As shown in Fig. 9 A to Fig. 9 F of accompanying drawing, this gripper shoe 214D tool of this flow-field plate 21D of this flow-field plate group 20D There are an outside and an inner side, are set towards this membrane electrode assembly 10 and formed outside this of wherein this gripper shoe 214D One continuous sealing plane 210D, this anode of this flow field plate body 211D of this flow-field plate 21D of this flow-field plate group 20D Side 2112D forms continuous sealing plane 21120D, wherein this anode-side 2112D of this flow field plate body 211D should Continuous sealing plane 21120D is set around this fuel channel 215D, so that when this fuel cell pack is stacked, This membrane electrode assembly 10 can be respectively carry with this anode-side 2112D outside this of this gripper shoe 214D of this flow-field plate 21D For a flat support, and make outside this of this gripper shoe 214D and this anode-side 2112D energy of this flow field plate body 211D Enough it is pressed on this membrane electrode assembly 10 the most hermetically.

As shown in Fig. 9 A to Fig. 9 F of accompanying drawing, this gripper shoe 214D bag of this flow-field plate 21D of this flow-field plate group 20D Include two contrary ends, two first end 2141D and two each extended between this first end 2141D One transverse edge 2142D, wherein this first end 2141D of this gripper shoe 214D and this first transverse edge 2142D Form this holding tank 2140D and this continuous sealing plane 210D；This flow field plate body 211D of this flow-field plate 21D includes two Individual contrary end, two the second end 2113D, two the second horizontal strokes each extended between this second end 2113D It is longitudinally extended forming portion 2115D between this second transverse edge 2114D to edge 2114D and one, wherein should Forming portion 2115D is formed and extends in the fuel channel 215D between this second end 2113D, wherein this flow field plate body 211D This second end 2113D and this second transverse edge 2114D this flow-field plate 21D this anode-side 2112D formed should Continuous sealing plane 21120D, wherein this continuous sealing plane 21120D is set this shape around this anode plate body 212D One-tenth portion 2115D, so that when this fuel cell pack is stacked, this of this gripper shoe 214D of this flow-field plate 21D is outer Side and this anode-side 2112D can be respectively this membrane electrode assembly 10 provides a flat support, and makes this gripper shoe 214D This outside and this anode-side 2112D can be pressed on this membrane electrode assembly 10 the most hermetically.

It is understood that this first fluid passage 216D of this flow-field plate 21D and this second fluid passage 217D phase Connect and this first fluid passage 216D can be made to realize this with one this structure completely penetrating through type passage (or groove) of formation While the heat sinking function of bright fuel cell pack, play and external reaction active fluid is guided to this second fluid passage 217D Effect.Further, this first fluid passage 216D of this flow-field plate 21D realizes supply and the dual-use function of heat radiation, And this first end 2141D of this gripper shoe 214D and this first transverse edge 2142D has one with this membrane electrode assembly 10 Individual bigger contact surface so that when this gripper shoe 214D be good thermal conductive material make time, fuel cell pack of the present invention There is more preferable radiating effect and reduce rotation speed of the fan sensitivity.Correspondingly, quick along with lifting and the rotation speed of the fan of cooling effect The reduction of sensitivity, under equal-wattage exports, needs the larger fuel cell built, this fuel relative to prior art The overall volume of battery and weight all can be lowered.

As shown in Fig. 9 A to Fig. 9 F of accompanying drawing, this gripper shoe 214D bag of this flow-field plate 21D of this flow-field plate group 20D Include two first end 2141D, and this flow field plate body 211D of this flow-field plate 21D includes two contrary ends, two The second end 2113D, wherein each first end of gripper shoe 214D of this flow-field plate 21D of this flow-field plate group 20D 2141D has first open communication 21410D, and each the second end 2113D of this flow field plate body 211D has one Individual second open communication 21130D, wherein this first open communication of this first end 2141D of this gripper shoe 214D 21410D respectively with this second open communication 21130D of this second end 2113D of corresponding this flow field plate body 211D Being connected and form a fuel flow channel 200D, wherein the two ends of each fuel channel 215D of this flow-field plate 21D are respectively It is connected with this fuel flow channel 200D, so that hydrogen fuel can being somebody's turn to do by this flow-field plate group 20D of this fuel cell pack This fuel flow channel 200D of flow-field plate 21D is provided to this membrane electrode assembly 10.

Sealing as shown in Fig. 9 A to Fig. 9 F of accompanying drawing, between adjacent two flow-field plate 21D of this flow-field plate group 20D Can be implemented by a sealing gasket 22D, wherein this sealing gasket 22D is a hollow-core construction, and this sealing gasket 22D's is close Envelope is partially disposed within a periphery of this anode-side 2112D of this flow field plate body 211D of previous flow-field plate 21D. In other words, this sealing gasket 22D be a hollow structure to realize fluid, such as gas, pass therethrough.This sealing gasket 22D enters One step is set the size and dimension that this anode-side 2112D with this flow field plate body 211D matches.Such as Fig. 9 A to Fig. 9 F Shown in, this sealing gasket 22D is a hollow-core construction, and the hermetic unit of this sealing gasket 22D is arranged on two adjacent flow field This anode-side 2112D of this flow field plate body 211D of previous flow-field plate 21D in plate 21D and later flow-field plate Between this gripper shoe 214D of 21D, wherein a periphery of this membrane electrode assembly 10 is arranged on the close of this sealing gasket 22D Between this anode-side 2112D of this flow field plate body 211D of envelope part and previous flow-field plate 21D, so that previous This flow field plate body 211D, this gripper shoe 214D of later flow-field plate 21D and this membrane electrode assembly 10 of individual flow-field plate 21D Form one and seal space, flow for fuel.Further, before the two ends of this sealing gasket 22D are separately positioned on This end of this flow field plate body 211D of one flow-field plate 21D and this gripper shoe of corresponding later flow-field plate 21D Between this end of 214D, wherein this sealing gasket 22D is set respectively around this flow field plate body of previous flow-field plate 21D Two of this gripper shoe 214D of two of 211D these second open communication 21130D and later flow-field plate 21D this One open communication 21410D, so that when this fuel cell is assembled and this sealing gasket 22D is compressed in two adjacent flow Time between field plate 21D, this flow field plate body 211D of previous flow-field plate 21D and this support of later flow-field plate 21D Plate 214D is stacked together hermetically, to prevent the fuel this flow field plate body 211D from previous flow-field plate 21D And the air gap leakage between this flow field plate body 211D of later flow-field plate 21D.It is understood that this fuel channel 215D is not hidden by this sealing gasket 22D.Preferably, this sealing gasket 22D is further provided within this gripper shoe 214D Two ends and this fuel channel 215D around this flow field plate body 211D, to form a sealing space for hydrogen flowing. In other words, this fuel channel 215D is not hidden by this sealing gasket 22D.

As shown in Fig. 9 B of accompanying drawing, this gripper shoe 214D of this flow-field plate 21D of this flow-field plate group 20D this first End 2141D is by respectively and be sealingly disposed in this second end 2113D of this flow field plate body 211D, to prevent hydrogen from firing Expect this first end 2141D of this gripper shoe 214D by this flow-field plate 21D of this flow-field plate group 20D and corresponding Air gap leakage between this second end 2113D of this flow field plate body 211D.Therefore, this stream of this flow-field plate group 20D This first end 2141D of this gripper shoe 214D of field plate 21D and this second end of corresponding this flow field plate body 211D 2113D is mutually coupled together hermetically, to prevent this first end 2141D of this gripper shoe 214D and accordingly should This second end 2113D of flow field plate body 211D forms the sky being connected with this fuel flow channel 200D being positioned between the two The formation of gap.

It should be noted that this first end 2141D of this gripper shoe 214D of this flow-field plate 21D and this stream corresponding Sealing between this second end 2113D of field plate body 211D can by one be set around this gripper shoe 214D should This first open communication 21410D of first end 2141D (or this second end around corresponding this flow field plate body 211D This second open communication 21130D of portion 2113D) sealing ring or sealing ring 23D and be implemented.In other embodiments In, this first end 2141D's of this gripper shoe 214D of this flow-field plate 21D and corresponding this flow field plate body 211D should Sealing by by this first end 2141D of this gripper shoe 214D and this flow field corresponding between the second end 2113D This second end 2113D of plate body 211D fits tightly and is implemented together.In other embodiments, this gripper shoe Sealing between this second end 2113D of this first end 2141D of 214D and accordingly this flow field plate body 211D is led to Cross and use glue or adhesive agent by this first end 2141D's of this gripper shoe 214D and corresponding this flow field plate body 211D This second end 2113D adheres to each other and is implemented.

It is understood that this anode flow field board (anode plate body or the flow field of this fuel cell according to present pre-ferred embodiments Plate body) and this cathode flow field plate (negative electrode plate body or flow field plate body) used by material be generally conducting metal.The tool of this metal There is firm, the light and characteristic of conduction, but this material is not limited to metal.Containing graphite, carbon black, carbon fiber and/or The conductive composite material of nano-sized carbon etc., or electrically conductive graphite, carbon black, carbon fiber and/or the nano-sized carbon etc. even strengthened Material, is used equally to present configuration.

It will be understood by those skilled in the art that in the exposure of the present invention, term " longitudinally ", " laterally ", " on ", D score, The orientation of the instruction such as "front", "rear", "left", "right", " vertically ", " level ", " top ", " end " " interior ", " outward " or position Relation is based on orientation shown in the drawings or position relationship, its be for only for ease of description the present invention and simplify describe rather than Instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, the most above-mentioned Term is not considered as limiting the invention.

It is understood that term " " is interpreted as " at least one " or " one or more ", the most in one embodiment, The quantity of one element can be one, and in a further embodiment, the quantity of this element can be multiple, term " " It is understood not to logarithm quantitative limitation.

Those skilled in the art would appreciate that shown in accompanying drawing and the described above embodiment of the present invention is only to the present invention Example rather than restriction.

It can thus be seen that the object of the invention can fully be efficiently accomplished.Should for explain function of the present invention and structural principle Embodiment has been absolutely proved and has been described, and the present invention is not limited by based on the change on these embodiment basis.Cause This, the present invention includes containing all modifications within appended claims claimed range and spirit.

Claims

1., for a cathode flow field plate for fuel cell, wherein this fuel cell has a membrane electrode assembly, its feature Being, including a cathode flow field plate, wherein said cathode flow field plate is positioned to seal this membrane electrode assembly, wherein said the moon Pole flow-field plate has one group of fluid passage and one group of cooling duct, and wherein said cooling duct is relative with described fluid passage respectively It is connected.

Cathode flow field plate the most according to claim 1, wherein said cathode flow field plate has a planar side and Individual channel side, wherein said planar side is positioned at an inner side of described cathode flow field plate, and wherein said channel side is positioned at described the moon One outside of pole flow-field plate, the described inner side of wherein said cathode flow field plate leads to towards this membrane electrode assembly, wherein said fluid Road and described cooling duct are formed on the described channel side of described cathode flow field plate.

Cathode flow field plate the most according to claim 2, the most each described fluid passage be one from described negative electrode The described outside of flow-field plate extends to a penetrating type passage of the described inner side of described cathode flow field plate, enables fluid to edge Described fluid passage flows to this membrane electrode assembly, thus promotes that electrochemical reaction passes this membrane electrode assembly and occurs and produce electric energy.

Cathode flow field plate the most according to claim 2, wherein said cathode flow field plate includes one group from described negative electrode The described outside of flow-field plate is separated by the guiding wall extended of turning up the soil, to form described fluid passage and described between described guiding wall Cooling duct.

Cathode flow field plate the most according to claim 3, wherein said cathode flow field plate includes one group from described negative electrode The described outside of flow-field plate is separated by the guiding wall extended of turning up the soil, to form described fluid passage and described between described guiding wall Cooling duct.

6., for an anode flow field board for fuel cell, wherein this fuel cell has a membrane electrode assembly, its feature Being, including an anode flow field board, wherein said anode flow field board has a planar side and a channel side, Qi Zhongsuo Stating planar side and be positioned at an inner side of described anode flow field board, wherein said channel side is positioned at outside one of described anode flow field board Side, the described channel side of wherein said anode flow field board is set and is applicable to seal this membrane electrode assembly, wherein said anode flow field Plate farther includes at least one fuel channel, and wherein said fuel channel is formed at the described passage towards this membrane electrode assembly Side, thus allow the fuel to be provided to this membrane electrode assembly by described fuel channel.

Anode flow field board the most according to claim 6, wherein said anode flow field board has two openings further, Wherein said opening is separately formed two contrary ends of described anode flow field board, the two ends of wherein said fuel channel Extended respectively to described opening, to guide fuel to flow between described opening through described fuel channel.

Anode flow field board the most according to claim 6, the most each described fuel channel has a serpentine configuration With the described channel side caved at described anode flow field board.

Anode flow field board the most according to claim 7, the most each described fuel channel has a serpentine configuration With the described channel side caved at described anode flow field board.

Anode flow field board the most according to claim 9, wherein said opening is the institute through described anode flow field board State the penetrating type groove in inner side and described outside.

11. 1 kinds of fuel cells, it is characterised in that including:

One membrane electrode assembly；With

One flow-field plate group, wherein said flow-field plate group includes a cathode flow field plate and an anode flow field board, wherein said Membrane electrode assembly is sealed between described cathode flow field plate and described anode flow field board；

Wherein said cathode flow field plate has a planar side, a contrary channel side and one group and is formed at the stream of described channel side Body passage, wherein said planar side is positioned at the one of the described cathode flow field plate outside towards membrane electrode assembly, and wherein said fluid leads to Road is arranged for enabling a fluid to flow to described membrane electrode assembly along described fluid passage, thus promotes that electrochemical reaction passes institute State membrane electrode occur and produce electric energy；

Wherein said anode flow field board has a planar side, a contrary channel side and at least one fuel channel, its Described in the described planar side of anode flow field board be positioned at an inner side of described anode flow field board, described anode flow field board described Channel side is positioned at an outside of described anode flow field board and seals described membrane electrode assembly, wherein said anode flow field board each Described fuel channel is formed at the described channel side of described anode flow field board, and wherein said fuel channel is arranged for making fuel Described membrane electrode assembly can be provided to by described fuel channel.

12. fuel cells according to claim 11, wherein said anode flow field board farther includes two openings, Wherein said opening is respectively formed at two contrary ends of described anode flow field board, and wherein said opening is through described sun The described inner side of pole flow-field plate and the penetrating type groove in described outside, the two ends of wherein said fuel channel are extended respectively to described Opening, to guide fuel to flow between described opening through described fuel channel.

13. fuel cells according to claim 12, the most each described fuel channel has a serpentine configuration With the described channel side caved at described anode flow field board.

14. fuel cells according to claim 13, farther include one be arranged on described membrane electrode assembly and Sealing gasket between described anode flow field board, wherein said anode flow field board farther includes one and extends between described end Anode plate body, described logical at described anode flow field board of the described anode plate body of wherein said anode flow field board and described end Side, road forms a continuous sealing plane, and wherein said sealing gasket is arranged on the described sealing plane of described anode flow field board.

15. fuel cells according to claim 14, wherein when two or more described fuel cell be stacked When an appropriate location, previous fuel cell is stacked on next fuel cell, and previous fuel cell is described The described planar side of anode flow field board couples, wherein mutually with the described channel side of the described cathode flow field plate of next fuel cell The described cathode flow field plate of the described planar side of the described anode flow field board of previous fuel cell and next fuel cell Described channel side formed two fluid courses being positioned between the two, wherein said fluid course respectively with described fuel channel phase Connection, to allow the fuel to flow to another fluid course by described fuel channel from a fluid course.

16. fuel cells according to claim 15, the most each described fluid course has two openings, its Described in sealing gasket be arranged at the described channel side of described anode flow field board, with the described opening around described fluid course, To prevent fuel from revealing from the gap between described membrane electrode assembly and the described channel side of described anode flow field board.

17. fuel cells according to claim 16, the most each described fluid course is formed on described negative electrode The described channel side of flow-field plate, one of them seal groove is set around described fluid course, and wherein said flow-field plate group enters one Step includes two sealing rings being respectively set in described seal groove, to prevent fuel from putting down from the described of described anode flow field board Gap between side, face and the described channel side of described cathode flow field plate is revealed.

18. fuel cells according to claim 11, wherein said cathode flow field plate farther includes one group of cooling Passage, wherein said cooling duct is respectively formed at the described channel side of described cathode flow field plate.

19. fuel cells according to claim 18, wherein said cooling duct is to be formed uniformly on described the moon The penetrating type passage of pole flow-field plate, to align with described fluid passage respectively.

20. fuel cells according to claim 18, wherein said cooling duct alternates with described fluid passage Ground is arranged.

21. 1 kinds of flow-field plate groups for fuel cell, wherein this fuel cell has at least one membrane electrode assembly, and it is special Levying and be, including at least two flow-field plate, this membrane electrode assembly of wherein said fuel cell is separately positioned on adjacent two streams Between field plate, the most each flow-field plate includes that a negative electrode plate body, an anode plate body and one group guide wall, wherein said the moon Pole plate body forms one group of first fluid groove spaced apart from each other, and wherein said guiding wall is spaced apart at described negative electrode plate body And between described anode plate body, so that the most adjacent two guiding walls form a second fluid groove being positioned between the two, The described first fluid groove of wherein said negative electrode plate body is set and is connected with described second fluid groove respectively, so that each First fluid groove forms at least one continuous print fluid passage with corresponding second fluid groove, and wherein said fluid passage has one Individual first passage opening, a second channel opening and a third channel opening, the described positive plate of wherein said flow-field plate Body has the fuel channel at least one outside being arranged on described anode plate body, the most adjacent two flow-field plate The described outside of the described anode plate body of previous flow-field plate is set and is arranged on adjacent two towards described fuel cell This membrane electrode assembly between flow-field plate, thus allow the fuel to be provided to this membrane electrode assembly by described fuel channel, rear one The described third channel opening of the described fluid passage of the described negative electrode plate body of individual flow-field plate is set towards this membrane electrode assembly, from And make described fluid passage allow the fluid flowing described first passage opening in described fluid passage and described second channel Between opening, and it is provided to this membrane electrode assembly of described fuel cell by described third channel opening.

22. flow-field plate groups according to claim 21, the institute of the previous flow-field plate of the most adjacent two flow-field plate State anode plate body described outside formed one for sealing the continuous sealing plane of the described film battery group of described fuel cell, One outside of the described negative electrode plate body of later flow-field plate forms another for the described film electricity sealing described fuel cell The continuous sealing plane of pond group, thus this membrane electrode assembly is sealed between adjacent two flow-field plate.

23. flow-field plate groups according to claim 21, the described negative electrode plate body of the most each flow-field plate has two Being separately positioned on the first open communication of two ends of described negative electrode plate body, described anode plate body has two and is set respectively Putting the second open communication of two ends at described anode plate body, described first open communication of wherein said negative electrode plate body is divided It is not connected with described second open communication of corresponding described anode plate body and forms a fuel flow channel, wherein said stream The two ends of each fuel channel of field plate are connected with described fuel flow channel respectively, so that fuel can be by described flow-field plate Described fuel flow channel be provided to this membrane electrode assembly.

24. flow-field plate groups according to claim 23, two ends of the described negative electrode plate body of the most each flow-field plate Portion is by respectively and be sealingly disposed in two ends of described anode plate body, to prevent fuel by described in described flow-field plate Air gap leakage between described end and the described end of corresponding described anode plate body of negative electrode plate body.

25. flow-field plate groups according to claim 21, the described guiding wall of the most each flow-field plate and described anode One-body molded and from described anode plate body the inner side of plate body extends.

26. flow-field plate groups according to claim 24, the described guiding wall of the most each flow-field plate and described anode Plate body is one-body molded and extends from the described inner side of described anode plate body.

27. flow-field plate groups according to claim 21, the described negative electrode plate body of wherein said flow-field plate has one Being formed at the holding tank of an inner side of described negative electrode plate body, the shapes and sizes of wherein said holding tank are according to described flow-field plate Described guiding wall is set, and being accommodated in the inner by the described guiding wall of described flow-field plate, and makes described guiding wall be formed Described second fluid groove be connected with the described first fluid groove of described negative electrode plate body respectively, thus formed described fluid lead to Road.

28. flow-field plate groups according to claim 26, the described negative electrode plate body of wherein said flow-field plate has one Being formed at the holding tank of an inner side of described negative electrode plate body, the shapes and sizes of wherein said holding tank are according to described flow-field plate Described guiding wall is set, and being accommodated in the inner by the described guiding wall of described flow-field plate, and makes described guiding wall be formed Described second fluid groove be connected with the described first fluid groove of described negative electrode plate body respectively, thus formed described fluid lead to Road.

29. flow-field plate groups according to claim 23, farther include two sealing rings, wherein said sealing ring It is separately positioned between the end of the described anode plate body of described flow-field plate and the end of corresponding described negative electrode plate body, wherein Each sealing ring is set respectively around described first open communication of described negative electrode plate body and the described anode of described flow-field plate Described second open communication of plate body, so that two ends of the described negative electrode plate body of described flow-field plate are by respectively and hermetically It is arranged on two ends of described anode plate body.

30. flow-field plate groups according to claim 28, the described appearance of the described negative electrode plate body of wherein said flow-field plate The degree of depth of groove received is identical with the height of the described guiding wall of described flow-field plate, so that the described guiding wall energy of described flow-field plate Enough by suitable the described holding tank being contained in described negative electrode plate body.

31. 1 kinds of fuel cells, it is characterised in that including:

At least one membrane electrode assembly；With

One flow-field plate group, wherein said flow-field plate group includes at least two flow-field plate, wherein said membrane electrode assembly respectively by Being arranged between adjacent two flow-field plate, the most each flow-field plate includes that a negative electrode plate body, an anode plate body and one group draw Leading wall, wherein said minus plate body forms one group of first fluid groove spaced apart from each other, and wherein said guiding wall is separated by turn up the soil to be set Put between described negative electrode plate body and described anode plate body so that the most adjacent two guiding walls formed one be positioned at both it Between second fluid groove, the described first fluid groove of wherein said negative electrode plate body is set and is connected with described second fluid groove respectively It is logical, so that each first fluid groove forms at least one continuous print fluid passage, Qi Zhongsuo with corresponding second fluid groove State fluid passage and there is a first passage opening, a second channel opening and a third channel opening, wherein said stream The described anode plate body of field plate has the fuel channel at least one outside being arranged on described anode plate body, Qi Zhongxiang The described outside of the described anode plate body of the previous flow-field plate of adjacent two flow-field plate is set towards being arranged on adjacent two Described membrane electrode assembly between flow-field plate, thus allow the fuel to be provided to described membrane electrode assembly by described fuel channel, The described third channel opening of the described fluid passage of the described negative electrode plate body of later flow-field plate is set towards described film electricity Pole group, so that described fluid passage allows the fluid flowing described first passage opening in described fluid passage and described the Between two access portal, and it is provided to described membrane electrode assembly by described third channel opening.

32. fuel cells according to claim 31, the institute of the previous flow-field plate of the most adjacent two flow-field plate State anode plate body described outside formed one for sealing the continuous sealing plane of described film battery group, later flow-field plate One outside of described negative electrode plate body forms another continuous sealing plane being used for sealing described film battery group, thus by described Membrane electrode assembly is sealed between adjacent two flow-field plate.

33. fuel cells according to claim 31, the described negative electrode plate body of the most each flow-field plate has two Being separately positioned on the first open communication of two ends of described negative electrode plate body, described anode plate body has two and is set respectively Putting the second open communication of two ends at described anode plate body, described first open communication of wherein said negative electrode plate body is divided It is not connected with described second open communication of corresponding described anode plate body and forms a fuel flow channel, wherein said stream The two ends of each fuel channel of field plate are connected with described fuel flow channel respectively, so that fuel can be by described flow-field plate Described fuel flow channel be provided to described membrane electrode assembly.

34. fuel cells according to claim 33, two ends of the described negative electrode plate body of the most each flow-field plate Portion is by respectively and be sealingly disposed in two ends of described anode plate body, to prevent fuel by described in described flow-field plate Air gap leakage between described end and the described end of corresponding described anode plate body of negative electrode plate body.

35. fuel cells according to claim 31, the described guiding wall of the most each flow-field plate and described anode One-body molded and from described anode plate body the inner side of plate body extends.

36. fuel cells according to claim 34, the described guiding wall of the most each flow-field plate and described anode Plate body is one-body molded and extends from the described inner side of described anode plate body.

37. fuel cells according to claim 31, the described negative electrode plate body of wherein said flow-field plate has one Being formed at the holding tank of an inner side of described negative electrode plate body, the shapes and sizes of wherein said holding tank are according to described flow-field plate Described guiding wall is set, and being accommodated in the inner by the described guiding wall of described flow-field plate, and makes described guiding wall be formed Described second fluid groove be connected with the described first fluid groove of described negative electrode plate body respectively, thus formed described fluid lead to Road.

38. fuel cells according to claim 33, farther include two sealing rings, wherein said sealing ring It is separately positioned between the end of the described anode plate body of described flow-field plate and the end of corresponding described negative electrode plate body, wherein Each sealing ring is set respectively around described first open communication of described negative electrode plate body and the described anode of described flow-field plate Described second open communication of plate body, so that two ends of the described negative electrode plate body of described flow-field plate are by respectively and hermetically It is arranged on two ends of described anode plate body.

39. fuel cells according to claim 31, farther include at least one sealing gasket, wherein said close Packing is respectively set at the described outside of the described anode plate body of the previous flow-field plate of two adjacent flow field plates, wherein said Sealing gasket is a hollow-core construction, and the hermetic unit of described sealing gasket be arranged on previous flow-field plate described anode plate body and Between the described negative electrode plate body of later flow-field plate and the periphery of described membrane electrode assembly is arranged on the sealing of described sealing gasket Divide between the described anode plate body of previous flow-field plate, so that the described anode plate body of previous flow-field plate, later The described negative electrode plate body of flow-field plate and described membrane electrode assembly form one and seal space, flow for fuel.

40. are separately positioned on previous according to the fuel cell described in claim 39, the two ends of wherein said sealing gasket The described end of the described anode plate body of individual flow-field plate and the described end of the described cathode flow field plate of corresponding later flow-field plate Between portion, wherein said sealing gasket is set two first connections around the described anode plate body of previous flow-field plate respectively and opens Two the second open communication of the described cathode flow field plate of mouth and later flow-field plate, so that when described fuel cell is by group When dress and described sealing gasket are compressed between two flow-field plate, the described anode plate body of previous flow-field plate and later flow field The described negative electrode plate body of plate is stacked together hermetically, to prevent the fuel described anode plate body from previous flow-field plate And the air gap leakage between the described negative electrode plate body of later flow-field plate.

41. 1 kinds of flow-field plate groups for fuel cell, wherein this fuel cell has at least one membrane electrode assembly, and it is special Levying and be, including at least two flow-field plate, this membrane electrode assembly of wherein said fuel cell is separately positioned on adjacent two streams Between field plate, the most each flow-field plate include a flow field plate body, one group first guide wall and one group second guide wall, wherein Described flow field plate body has a cathode side and an anode-side, and wherein said flow field plate body has at least one and is arranged on institute Stating the fuel channel of anode-side, wherein said first guides wall to be spaced apart the described negative electrode at described flow field plate body Side, described second guides wall to guide wall to extend from described first respectively, so that adjacent two first guide wall to form one Be positioned at first fluid passage between the two, and the most adjacent two second guide walls formed one be positioned between the two the Two fluid passages, wherein said first fluid passage is connected with described second fluid passage, the most each first fluid passage Having two first passage openings, each second fluid passage has a second channel opening, the most adjacent two flow-field plate The described anode-side of described flow field plate body of previous flow-field plate be set towards being arranged between adjacent two flow-field plate This membrane electrode assembly, thus allow the fuel to be provided to this membrane electrode assembly, and later flow-field plate by described fuel channel The described second channel opening of described second fluid passage of described flow field plate body be set towards described fuel cell should Membrane electrode assembly, so that described first fluid passage allows the fluid flowing described first passage opening in described fluid passage Between, and this membrane electrode of described fuel cell it is provided to by the described second channel opening of described second fluid passage Group.

42. flow-field plate groups according to claim 41, the most each described flow-field plate farther includes a support Plate, wherein said gripper shoe is arranged on described first and guides wall, the institute of the previous flow-field plate of the most adjacent two flow-field plate The described anode-side formation one stating flow field plate body is arranged on this membrane electrode assembly between adjacent two flow-field plate for sealing Continuous sealing plane, one of the described gripper shoe of later flow-field plate outside forms another and is arranged on phase for sealing The continuous sealing plane of this membrane electrode assembly between adjacent two flow-field plate, to be sealed in adjacent two flow-field plate by this membrane electrode assembly Between.

43. flow-field plate groups according to claim 42, wherein said gripper shoe forms a holding tank, and works as institute State gripper shoe be arranged on described first guide wall time, described flow-field plate described second guide wall be accommodated in described gripper shoe Described holding tank in.

44. flow-field plate groups according to claim 42, the described gripper shoe of the most each flow-field plate has two quilts Being separately positioned on the first open communication of two ends of described gripper shoe, described flow field plate body has two and is separately positioned on Second open communication of two ends of described flow field plate body, described first open communication of wherein said gripper shoe respectively with phase Described second open communication of corresponding described flow field plate body is connected and forms a fuel flow channel, wherein said flow-field plate The two ends of each fuel channel are connected with described fuel flow channel respectively, so that fuel can described by described flow-field plate Fuel flow channel is provided to this membrane electrode assembly.

45. flow-field plate groups according to claim 44, two ends of the described gripper shoe of the most each flow-field plate By respectively and be sealingly disposed in two ends of described flow field plate body, to prevent fuel by described in described flow-field plate Air gap leakage between described end and the described end of corresponding described flow field plate body of fagging.

46. flow-field plate groups according to claim 41, described the first of the most each flow-field plate guides wall with described Flow-field plate body by integral forming and the described cathode side from described flow field plate body extend.

47. flow-field plate groups according to claim 41, the described gripper shoe of wherein said flow-field plate has an appearance Receiving groove, the shapes and sizes of wherein said holding tank guide wall to be set according to described the second of described flow-field plate, with can be by institute Stating described the second of flow-field plate guides wall to accommodate in the inner.

48. flow-field plate groups according to claim 45, farther include two sealing rings, wherein said sealing ring It is separately positioned between end and the end of corresponding described gripper shoe of the described flow field plate body of described flow-field plate, the most often Individual sealing ring is set respectively around described first open communication of described gripper shoe and the described flow field plate body of described flow-field plate Described second open communication so that two ends of the described gripper shoe of described flow-field plate are by respectively and be sealingly disposed in Two ends of described flow field plate body.

49. flow-field plate groups according to claim 47, the described appearance of the described flow field plate body of wherein said flow-field plate Receive groove the degree of depth and described flow-field plate described second guide the height of wall identical, so that described the second of described flow-field plate Guide the wall can be by suitable the described holding tank being contained in described flow field plate body.

50. flow-field plate groups according to claim 41, described the of the described flow field plate body of wherein said flow-field plate One guides the length of wall to guide the length of wall more than described the second of described flow-field plate, to allow described gripper shoe to be arranged on institute State the first guiding wall.

51. according to the flow-field plate group described in claim 42,43,44,45,46,47,48,49 or 50, wherein Described gripper shoe is made up of non-conductive rigid material.

52. 1 kinds of fuel cells, it is characterised in that including:

At least one membrane electrode assembly；With

At least two flow-field plate, wherein said membrane electrode assembly is separately positioned between adjacent two flow-field plate, the most each Flow-field plate include a flow field plate body, one group first guide wall and one group second guide wall, wherein said flow field plate body to have one Individual cathode side and an anode-side, wherein said flow field plate body has at least one fuel being arranged on described anode-side and leads to Road, wherein said first guides wall to be spaced apart the described cathode side at described flow field plate body, and described second guides wall Wall is guided to extend from described first respectively, so that adjacent two first guide wall formation one to be positioned at first between the two Fluid passage, and the most adjacent two second guiding walls one second fluid passage being positioned between the two of formation, Qi Zhongsuo Stating first fluid passage to be connected with described second fluid passage, the most each first fluid passage has two first passages and opens Mouthful, each second fluid passage has a second channel opening, the institute of the previous flow-field plate of the most adjacent two flow-field plate The described anode-side stating flow field plate body is set towards the described membrane electrode assembly being arranged between adjacent two flow-field plate, thus Allow the fuel to be provided to described membrane electrode assembly by described fuel channel, and the described flow field plate body of later flow-field plate The described second channel opening of described second fluid passage is set the described membrane electrode assembly towards described fuel cell, so that Obtaining described first fluid passage allows fluid to flow between the described first passage opening of described fluid passage, and by described The described second channel opening of second fluid passage is provided to the described membrane electrode assembly of described fuel cell.

53. fuel cells according to claim 52, the most each described flow-field plate farther includes a support Plate, wherein said gripper shoe is arranged on described first and guides wall, the institute of the previous flow-field plate of the most adjacent two flow-field plate The described anode-side formation one stating flow field plate body is arranged on the described membrane electrode between adjacent two flow-field plate for sealing The continuous sealing plane of group, an outside of the described gripper shoe of later flow-field plate forms another and is arranged on for sealing The continuous sealing plane of the described membrane electrode assembly between adjacent two flow-field plate, to be sealed in adjacent two by described membrane electrode assembly Between flow-field plate.

54. fuel cells according to claim 53, wherein said gripper shoe forms a holding tank, Qi Zhongsuo State gripper shoe to be arranged on described first and guide described the second of wall and described flow-field plate to guide wall to be accommodated in described gripper shoe Described holding tank in.

55. fuel cells according to claim 53, the described gripper shoe of the most each flow-field plate has two quilts Being separately positioned on the first open communication of two ends of described gripper shoe, described flow field plate body has two and is separately positioned on Second open communication of two ends of described flow field plate body, described first open communication of wherein said gripper shoe respectively with phase Described second open communication of corresponding described flow field plate body is connected and forms a fuel flow channel, wherein said flow-field plate The two ends of each fuel channel are connected with described fuel flow channel respectively, so that fuel can described by described flow-field plate Fuel flow channel is provided to described membrane electrode assembly.

56. fuel cells according to claim 55, two ends of the described gripper shoe of the most each flow-field plate By respectively and be sealingly disposed in two ends of described flow field plate body, to prevent fuel by described in described flow-field plate Air gap leakage between described end and the described end of corresponding described flow field plate body of fagging.

57. fuel cells according to claim 52, described the first of the most each flow-field plate guides wall with described Flow-field plate body by integral forming and the described cathode side from described flow field plate body extend.

58. fuel cells according to claim 52, the described gripper shoe of wherein said flow-field plate has an appearance Receiving groove, the shapes and sizes of wherein said holding tank guide wall to be set according to described the second of described flow-field plate, with can be by institute Stating described the second of flow-field plate guides wall to accommodate in the inner.

59. fuel cells according to claim 56, farther include two sealing rings, wherein said sealing ring It is separately positioned between end and the end of corresponding described gripper shoe of the described flow field plate body of described flow-field plate, the most often Individual sealing ring is set respectively around described first open communication of described gripper shoe and the described flow field plate body of described flow-field plate Described second open communication so that two ends of the described gripper shoe of described flow-field plate are by respectively and be sealingly disposed in Two ends of described flow field plate body.

60. fuel cells according to claim 58, the described appearance of the described flow field plate body of wherein said flow-field plate Receive groove the degree of depth and described flow-field plate described second guide the height of wall identical, so that described the second of described flow-field plate Guide the wall can be by suitable the described holding tank being contained in described flow field plate body.

61. fuel cells according to claim 52, described the of the described flow field plate body of wherein said flow-field plate One guides the length of wall to guide the length of wall more than described the second of described flow-field plate, to allow described gripper shoe to be arranged on institute State the first guiding wall.

62. fuel cells according to claim 53, farther include at least one sealing gasket, wherein said close Packing is a hollow-core construction, and the hermetic unit of described sealing gasket is arranged on the institute of described flow field plate body of previous flow-field plate State between the periphery of anode-side and the described continuous sealing plane of the described gripper shoe of later flow-field plate, wherein said membrane electrode The periphery of group is arranged on the described the closeest of the hermetic unit of described sealing gasket and the described flow field plate body of previous flow-field plate Between envelope plane, so that the described flow field plate body of previous flow-field plate, the described gripper shoe of later flow-field plate and described Membrane electrode assembly forms one and seals space, flows for fuel.

63. fuel cells according to claim 62, the two ends of wherein said sealing gasket are separately positioned on previous The described end of the described end of the described flow field plate body of individual flow-field plate and the described gripper shoe of corresponding later flow-field plate it Between, wherein said sealing gasket be set respectively around previous flow-field plate described flow field plate body two the second open communication and Two the first open communication of the described gripper shoe of later flow-field plate, so that when described fuel cell is assembled and described When sealing gasket is compressed between two flow-field plate, the described flow field plate body of previous flow-field plate and later flow-field plate described Gripper shoe is stacked together hermetically, to prevent the fuel described flow field plate body from previous flow-field plate and later stream Air gap leakage between the described gripper shoe of field plate.

64. according to the fuel cell described in claim 53,54,55,56,57,58,59,60,61,62 or 63, its Described in gripper shoe be made up of non-conductive rigid material.