CN209183648U

CN209183648U - Individual fuel cells and fuel cell pile

Info

Publication number: CN209183648U
Application number: CN201822037325.3U
Authority: CN
Inventors: 耿珺; 柴茂荣; 李鹏飞; 宋耀颖; 陆维
Original assignee: National Power Investment Group Hydrogen Energy Technology Development Co Ltd
Current assignee: National Power Investment Group Hydrogen Energy Technology Development Co Ltd; Spic Hydrogen Energy Technology Development Co Ltd
Priority date: 2018-12-05
Filing date: 2018-12-05
Publication date: 2019-07-30
Anticipated expiration: 2028-12-05

Abstract

The utility model discloses a kind of individual fuel cells and fuel cell pile, the individual fuel cells, comprising: anode plate, the anode plate include anode reaction area and the anode edge area around the anode reaction area；Cathode plate, the cathode plate include cathodic reaction zone and the cathode edge area around the cathodic reaction zone；Membrane electrode assembly, the membrane electrode assembly are folded between the first side of the anode plate and the first side of the cathode plate；Wherein, the anode reaction area is at least partly at least partly recessed towards the direction that mutually deviates from the cathodic reaction zone, and the anode edge area is at least partly at least partly protruded towards direction close to each other with the cathode edge area.Sufficiently large reaction zone can be limited, keeps the reaction efficiency of individual fuel cells higher, and sealing material can be saved.

Description

Individual fuel cells and fuel cell pile

Technical field

The utility model belongs to fuel cell manufacturing technology field, in particular to a kind of individual fuel cells and tool There is the fuel cell pile of the fuel cell separator part.

Background technique

Fuel cell especially hydrogen fuel cell be mainly used for the fuel cell-powered vehicle of new-energy automobile series, car with And the fields such as truck, new energy source fuel cell power vehicle, aircraft, home-use decentralized power s.

Fuel cell have stacked structure, usually by individual fuel cells be laminated it is multiple made of laminated body and constitute. In general individual fuel cells include generating body and partition, generating body includes dielectric film and configuration on dielectric film two sides Electrode catalyst layer.In fuel cell unit, the both ends of laminated body stack gradually collector plate, insulation board, end plate, and use connection Device links a pair of end plate for being respectively at laminated body two sides, it is made to keep laminated arrangement.

The flow path that separator surface has supply response gas to flow, the efficiency shadow of the set-up mode of the flow path to fuel cell Sound is larger.In the related technology, the structure of separator provides reducing agent gas flow path and oxidant gas flow path is relatively simple, not In view of the practical trend of gas.

Reaction compartment needed for the characteristic requirements hydrogen-oxygen side of fuel cell is different, generally not using two sides runner design width Same method solves the problems, such as this.But the side that width of flow path increases causes the side runner breadth depth ratio to increase, so as to cause reaction effect Rate reduces or the increase of battery volume.Further it is also possible to increase the complexity of punch process.

Fuel cell can generate heat in power generation process.In the related technology, in order to take away heat, usually separating Coolant flow channel is arranged in the marginal zone of part, and the cooling effect of which is bad, and the heating that long-time service will lead to fuel cell is serious, Influence the efficiency of electrochemical reaction.

In the laminated body of stacking fuel cells, the press-fit effect of laminated body directly affects the reaction efficiency of fuel cell. In the related technology, need to be arranged independent press fitting frame to realize the press fitting of laminated body, components are more, complex process.

The stacked structure of fuel cell is by applying fastening force to being placed on the end plate to each monocell laminated body both ends And it is formed.In the related technology, need to be arranged independent press fitting frame, the rod piece for applying fastening force passes through press fitting frame.This Kind press-fit approach causes cell internal pressure uneven, to influence battery performance.

It is exhausted with membrane electrode one using being arranged in membrane electrode surrounding in order to realize the positioning and fixing of membrane electrode generating body Edge insulate frame to realize.When bearing the high pressure of battery work, insulating, frame itself is different from membrane electrode material properties easily to be led The deformation and displacement of insulation frame are caused, and then influences battery performance.

Utility model content

The utility model aims to solve at least one of the technical problems existing in the prior art.

According to the individual fuel cells of the utility model embodiment, comprising: anode plate, the anode plate include anode reaction Area and the anode edge area for surrounding the anode reaction area；Cathode plate, the cathode plate include cathodic reaction zone and surround described The cathode edge area of cathodic reaction zone；Membrane electrode assembly, the membrane electrode assembly be folded in the first side of the anode plate with Between the first side of the cathode plate；Wherein, the anode reaction area at least partly with the cathodic reaction zone at least Part is recessed towards the direction mutually deviated from, at least partly court at least partly with the cathode edge area in the anode edge area Direction protrusion close to each other.

According to the individual fuel cells of the utility model embodiment, by anode plate and cathode that above structure form is arranged Plate can limit sufficiently large reaction zone, keep the reaction efficiency of individual fuel cells higher, and can save sealing material.

The utility model also proposed a kind of fuel cell pile, comprising: individual fuel cells as described above, it is multiple The individual fuel cells are stacked, and the second side of the cathode plate of the individual fuel cells and an adjacent monomer fire Expect that the second side of the anode plate of battery is oppositely arranged.

The fuel cell pile and the above-mentioned individual fuel cells compared with the existing technology possessed by advantage phase Together, details are not described herein.

The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description In become obvious, or recognized by the practice of the utility model.

Detailed description of the invention

The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will Become obvious and be readily appreciated that, in which:

Fig. 1 is the external structure schematic diagram according to the fuel cell pile of the utility model embodiment；

Fig. 2 is each layer Structure explosion diagram according to the individual fuel cells of the utility model embodiment；

Fig. 3 is the front view according to the individual fuel cells of the utility model embodiment；

Fig. 4 is the front view according to the individual fuel cells of the utility model embodiment；

Fig. 5 is the partial enlarged view in Fig. 4 at A；

Fig. 6 is the cross-section diagram in figure at M-M；

Fig. 7 is the cross-section diagram in figure at N-N；

Fig. 8 is the structural schematic diagram according to the screen of the utility model embodiment；

Fig. 9 is the cross-section diagram according to the individual fuel cells of the utility model one embodiment in stacking direction；

Figure 10 is the cross-sectional view according to the cathode plate of the utility model one embodiment；

Figure 11 is the cross-section diagram according to the individual fuel cells of second embodiment of the utility model in stacking direction；

Figure 12 is the cross-sectional view according to the cathode plate of second embodiment of the utility model；

Figure 13 is the cross-section diagram according to the individual fuel cells of the utility model third embodiment in stacking direction；

Figure 14 is the cross-sectional view according to the cathode plate of the utility model third embodiment；

Figure 15 is the cross-section diagram according to the individual fuel cells of the 4th embodiment of the utility model in stacking direction；

Figure 16 is the cross-sectional view according to the cathode plate of the 4th embodiment of the utility model；

Figure 17 is the cross-section diagram according to the individual fuel cells of the 5th embodiment of the utility model in stacking direction；

Figure 18 is the cross-section diagram according to the individual fuel cells of the 6th embodiment of the utility model in stacking direction；

Figure 19 is the cross-sectional view according to the cathode plate of the 6th embodiment of the utility model；

Figure 20 is the cross-sectional view according to the anode plate of the 6th embodiment of the utility model；

Figure 21 is the cross-sectional view according to the anode plate of the utility model embodiment；

Figure 22 is the cross-sectional view according to the cathode plate of the utility model embodiment.

Appended drawing reference:

Anode plate 10, anode reaction area 11, anode flow channel 111, anode edge area 12, anode seal slot 121, air inlet water conservancy diversion Area 123, outlet guiding region 124, anode seal boss 125, anode clamping part 126, anode flow channel bottom surface A1, anode flow channel top surface A2, edge protuberance face A3,

Cathode plate 20, cathodic reaction zone 21, cathode flow channels 211, cathode edge area 22, cathode seal groove 221, cathode sealing Boss 225, cathode flow channels bottom surface C1, cathode flow channels top surface C2, cathode clamping part crowning C3, cathode edge area plane C4 are close Sealing 222, cascaded surface 223, cathode clamping part 126,

Membrane electrode assembly 30, anode gas circuit diffusion layer 31, cathode gas circuit diffusion layer 32, membrane electrode 33, insulate frame 34,

Gas circuit component 40, cold side component 50,

Screen 60, screen runner 61,

Fuel gas inlet 71, fuel gas outlet 72, oxidant inlet 73, oxidant outlet 74, coolant inlet 75 are cooling Agent outlet 76, escape groove 77,

First direction X, second direction Y.

Specific embodiment

The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model Limitation.

The fuel cell pile of the utility model embodiment can be hydrogen fuel cell, and fuel cell pile may include more A individual fuel cells being stacked, each individual fuel cells include the anode plate 10 being stacked, membrane electrode assembly 30, Cathode plate 20, fuel gas enter the gas circuit at anode plate 10, and oxidant gas enters the gas circuit at cathode plate 20, fuel gas Electrochemical reaction is occurred by membrane electrode assembly 30 with oxidant gas, converts electric energy, such as hydrogen fuel cell for chemical energy Fuel gas be hydrogen, oxidant gas is oxygen, and certainly, the supply of usual cathode is air.

Or fuel cell pile may include fuel cell separator part and membrane electrode assembly 30, fuel cell separator part is extremely Few includes the anode plate 10 and cathode plate 20 being stacked, and membrane electrode assembly 30 is folded in the anode of a fuel cell separator part Between plate 10 and the cathode plate 20 of another adjacent fuel cell separator part.

The not substantive difference of above two describing mode, only by the segmentation of fuel cell pile when have chosen not With periodical module, in each embodiment below, such as fuel cell separator part is described in detail, then is being related to pair It is only briefly described when the individual fuel cells answered.

Embodiment one

Below with reference to Fig. 1-Figure 22 description according to the fuel cell separator part of the utility model embodiment.

As shown in Fig. 1-Figure 22, the fuel cell separator part according to the utility model one embodiment includes 10 He of anode plate Cathode plate 20.

Wherein, as shown in figure 21, the first side of anode plate 10 is equipped with anode flow channel 111, at least portion of anode flow channel 111 Divide and extend in a first direction, it is preferable that the main part of anode flow channel 111 extends in a first direction.

As shown in figure 22, the first side of cathode plate 20 be equipped with cathode flow channels 211, cathode flow channels 211 at least partially along Second direction extends, and cathode flow channels 211 at least partly extend in a second direction, it is preferable that the main part of cathode flow channels 211 Extend in a second direction.

First direction is vertical with second direction, and first direction can be the length direction of anode plate 10, and second direction can be with For the width direction of cathode plate 20, as shown in fig. 6, the width direction along fuel cell separator part cuts fuel cell separator part, The extending direction that the cross-section diagram can be seen that cathode flow channels 211 is vertical with the extending direction of anode flow channel 111.

Anode plate 10 is stacked with cathode plate 20, and the second side phase of the second side of anode plate 10 and cathode plate 20 To setting.The first side of anode plate 10 and the first side of cathode plate 20 are for clamping membrane electrode assembly 30, in a fuel In battery separators, substantially comprise an individual fuel cells anode plate 10 and adjacent another individual fuel cells Cathode plate 20.

The second side of the anode plate 10 and the second side face of the cathode plate 20 are arranged, second side of the anode plate 10 Face can directly be compressed with the second side of the cathode plate 20 to be bonded or the second side of the anode plate 10 and the cathode plate 20 Second side between can be with other separators of sandwiched.

It is understood that by the design of above-mentioned orthogonal runner, so that fuel gas and oxidant gas exist It can keep being mutually perpendicular to flow substantially when work, the water that generates in reaction and heat are more evenly distributed, to help to mention The performance and used life of high fuel cell.

According to the fuel cell separator part of the utility model embodiment, be conducive to balancing fuel cell hydro-thermal distribution and Production water is quickly discharged, and is conducive to the wetting of film, to improve the performance and used life of fuel cell, and this fuel cell The structure of separator is simple, and without special high manufacturing accuracy, processing cost is low, is conducive to industrialized production.

In some embodiments, as shown in figure 21, anode plate 10 is including anode reaction area 11 and around anode reaction area 11 Anode edge area 12, anode flow channel 111 is set to the first side in anode reaction area 11, for example anode reaction area 11 can be square Shape, anode edge area 12 can be rectangle frame；Cathode plate 20 includes cathodic reaction zone 21 and the cathode around cathodic reaction zone 21 Marginal zone 22, cathode flow channels 211 are set to the first side of cathodic reaction zone 21, for example cathodic reaction zone 21 can be rectangle, yin Pole marginal zone 22 can be rectangle frame, it should be noted that above-mentioned rectangle and rectangle frame are not limited to standard rectangular and standard In rectangle frame, such as anode plate 10 shown in Figure 21, notch can be equipped at four exterior angles in anode edge area 12.

It should be noted that the first side of anode plate 10, the first side in anode reaction area 11, anode edge area 12 First side is respectively positioned on the same side of anode plate 10, the second side of anode plate 10, the second side in anode reaction area 11, anode The second side of marginal zone 12 is respectively positioned on the same side of anode plate 10；The first side of cathode plate 20, cathodic reaction zone 21 One side, cathode edge area 22 first side be respectively positioned on the same side of cathode plate 20, the second side of cathode plate 20, cathode are anti- The second side of the second side, cathode edge area 22 of answering area 21 is respectively positioned on the same side of cathode plate 20；Cathode plate 20 and anode The side of plate 10 being oppositely arranged with membrane electrode assembly 30 is first side, first side and second side back to setting.

Anode edge area 12 includes: two along the first edge area that first direction is oppositely arranged, two phases in a second direction To the second edge area of setting, one end phase that the both ends in a first edge area are oppositely arranged with Liang Ge second edge area respectively Even, the other end that the both ends in another first edge area are oppositely arranged with Liang Ge second edge area respectively is connected.Two the first sides One in edge area is equipped with fuel gas inlet 71, another in Liang Ge first edge area is equipped with fuel gas outlet 72.

Cathode edge area 22 includes: two along the first edge area that first direction is oppositely arranged, two phases in a second direction To the second edge area of setting, one end phase that the both ends in a first edge area are oppositely arranged with Liang Ge second edge area respectively Even, the other end that the both ends in another first edge area are oppositely arranged with Liang Ge second edge area respectively is connected.

One in Liang Ge first edge area is equipped with coolant outlet 76 and fuel gas inlet 71, in Liang Ge first edge area Another be equipped with coolant inlet 75 and fuel gas outlet 72；One in Liang Ge second edge area is equipped with oxidant inlet Another in 73, Liang Ge second edge areas is equipped with oxidant outlet 74.Fuel gas inlet 71 is positioned below, fuel gas outlet 72 It is located at top, hydrogen from top to bottom, is conducive to the wetting of film.

71 face of fuel gas inlet on fuel gas inlet 71 and cathode plate 20 on anode plate 10 is arranged, on anode plate 10 Fuel gas outlet 72 with cathode plate 20 on fuel gas export 72 faces setting；Coolant inlet 75 and yin on anode plate 10 75 face of coolant inlet on pole plate 20 is arranged, and the coolant outlet 76 on anode plate 10 goes out with the coolant on cathode plate 20 Mouth 76 faces setting；73 face of oxidant inlet on oxidant inlet 73 and cathode plate 20 on anode plate 10 is arranged, anode 74 face of oxidant outlet on oxidant outlet 74 and cathode plate 20 on plate 10 is arranged.

Shown in as shown in Figure 1, Figure 21, Figure 22, coolant outlet 76 and fuel gas inlet 71 are spaced apart distribution in a second direction, and Fuel gas inlet 71 is located at close to one end of oxidant outlet 74, and coolant outlet 76 is located at one close to oxidant inlet 73 End, coolant inlet 75 and fuel gas outlet 72 are spaced apart distribution in a second direction, and fuel gas outlet 72 is located at close to oxidation One end of agent import 73, coolant inlet 75 are located at close to one end of oxidant outlet 74.In other words, fuel gas inlet 71 and combustion The outlet of material gas 72 is arranged in a staggered manner in second direction,, can be with convenient for the abundant reaction of fuel gas in this way, the stroke of fuel gas is longer Improve the reactivity of fuel gas.

The design method of above-mentioned manifold ports, it can be ensured that 73 fuel gas inlet 71 of oxidant inlet is separate, make fuel gas into Mouth 71 to guarantee that 71 humidity of fuel gas inlet is relatively high, and makes fuel cell coolant flow path close to oxidant outlet 74 From bottom to top, full irrigation form is formed.

Coolant outlet 76 and coolant inlet 75 be it is multiple, multiple coolant outlets 76 in a second direction be spaced apart point Cloth, multiple coolant inlets 75 are spaced apart distribution in a second direction, oxidant outlet 74 and oxidant inlet 73 be it is multiple, it is more A oxidant outlet 74 is spaced apart distribution along first direction, and multiple oxidant inlets 73 are spaced apart distribution along first direction.

It is understood that passing through the set-up mode of above-mentioned port, in conjunction with the cloth of anode flow channel 111 and cathode flow channels 211 Form is set, so that the flow direction square crossing of oxidant and fuel gas, the further hydro-thermal distribution of balancing fuel cell, and The stroke of fuel gas is longer, and convenient for the abundant reaction of fuel gas, the reactivity of fuel gas can be improved.

As shown in figure 21, anode flow channel 111 includes multiple anode subflow roads extended in a first direction, multiple anode subflows Road is arranged spaced apart in a second direction；As shown in figure 22, cathode flow channels 211 include multiple cathode subflows extended in a second direction Road, multiple cathode subflows road are arranged spaced apart along first direction.

It should be noted that above-mentioned anode subflow road, which extends in a first direction, not defines that anode subflow road one is set to Linear type, in fact, anode subflow road extends generally direction along first direction, for example anode subflow road can also be curved Curved, anode subflow road includes the curved segmental arc of multistage or straightway, and cathode subflow road is similar.

The Liang Ge first edge area in anode edge area 12 is respectively equipped with air inlet guiding region 123 and outlet guiding region 124, air inlet Guiding region 123 is located between fuel gas inlet 71 and anode flow channel 111, and outlet guiding region 124 is located at fuel gas outlet 72 and sun Between pole runner 111, air inlet guiding region 123 and outlet guiding region 124 extend in a second direction.

It is understood that the number in this structure Anodic subflow road is more, and the import in each anode subflow road and Outlet corresponds, and each anode subflow road can be connected to by air inlet guiding region 123 with fuel gas inlet 71, Mei Geyang Pole subflow road can be connected to by outlet guiding region 124 with fuel gas outlet 72, i.e., after fuel gas enters fuel gas inlet 71 Air inlet guiding region 123 is first flowed through, reacts flowing into anode subflow road, then be pooled to outlet guiding region 124, then goes out from fuel gas Mouth 72 exports.

Certainly, the structure of anode flow channel 111 and cathode flow channels 211 can also be other forms, for example anode flow channel 111 wraps Multiple anode subflow roads extended in a first direction are included, multiple anode subflows road is arranged spaced apart in a second direction, anode subflow The first end in road is connected with the first end in an adjacent anode subflow road, the second end in anode subflow road and adjacent another The second end in anode subflow road is connected.In other words, anode flow channel 111 can be snakelike, in this way, fuel gas can be in limited sun Pole reaction zone 11 flows through sufficiently long distance, reacts more complete.

For each anode reaction area 11, it can be all anode subflow roads and be connected as a whole anode flow channel 111, Or multiple anode subflows road is formed as one group, all anode subflow roads are divided into multiple groups, every group of multiple anode subflows Road is connected as a whole snakelike anode flow channel 111, and each anode reaction area 11 includes a plurality of anode flow channel 111.

As shown in Fig. 9-Figure 20, the invention also discloses a kind of individual fuel cells, which includes: Anode plate 10, cathode plate 20, membrane electrode assembly 30.

Wherein, the first side of anode plate 10 be equipped with anode flow channel 111, anode flow channel 111 at least partially along first party To extension, the first side of cathode plate 20 is equipped with cathode flow channels 211, and cathode flow channels 211 are hung down at least partially along with first direction Straight second direction extends, membrane electrode assembly 30 be folded in anode plate 10 first side and cathode plate 20 first side it Between.

Wherein the structure of cathode plate 20 and cathode plate 20 can be no longer superfluous herein with the description in reference fuel battery separators It states.

According to the individual fuel cells of the utility model embodiment, be conducive to equilibrium water heat distribution, and individual fuel cells Performance is excellent, long service life, processing cost is low, is conducive to industrialized production.

The invention also discloses a kind of fuel cell pile, which includes: multiple as any of the above-described The fuel cell separator part and membrane electrode assembly 30 of kind embodiment, multiple fuel cell separator parts are stacked, and fuel cell Membrane electrode assembly 30 is folded between the anode plate 10 of separator and the cathode plate 20 of an adjacent fuel cell separator part.Or Person's fuel cell pile includes multiple individual fuel cells being stacked.Membrane electrode assembly 30 includes the anode being stacked Gas circuit diffusion layer 31 (Gas diffusion layer, abbreviation GDL), (the Membrane Electrode of membrane electrode 33 Assembly, abbreviation MEA), cathode gas circuit diffusion layer 32 (Gas diffusion layer, abbreviation GDL).

According to the fuel cell pile of the utility model embodiment, be conducive to equilibrium water heat distribution, and the property of fuel cell The excellent, long service life of energy, processing cost is low, is conducive to industrialized production.

Embodiment two

Below with reference to Fig. 2, Fig. 4-Figure 20 description according to the fuel cell separator part of the utility model embodiment.

It include anode plate according to the fuel cell separator part of the utility model one embodiment as shown in Fig. 2, Fig. 4-Figure 20 10, cathode plate 20 and screen 60.

Wherein, the first side in anode reaction area 11 and the first side of cathodic reaction zone 21 are for connecting fuel cell electricity The membrane electrode assembly 30 of heap.

Screen 60 is folded between the second side in anode edge area 12 and the second side in cathode edge area 22, and screen 60 are all connected with anode edge area 12 and cathode edge area 22.

For example anode reaction area 11 can be rectangle, anode edge area 12 can be rectangle frame, and cathodic reaction zone 21 can be with For rectangle, cathode edge area 22 can be rectangle frame, and screen 60 is rectangle frame.It should be noted that above-mentioned rectangle and rectangle frame It is not limited to standard rectangular and standard rectangular frame, such as in anode plate 10 shown in Figure 21, four of anode edge area 12 are outer Notch can be equipped at angle.

It is understood that anode reaction area 11 and 21 face of cathodic reaction zone are arranged, electrochemical reaction is occurred mainly in Between anode reaction area 11 and cathodic reaction zone 21, such anode reaction area 11 and the heat at cathodic reaction zone 21 are more, lead to Setting screen 60 is crossed, anode plate 10 and cathode plate 20 can be separated, second side and the cathode plate 20 of such anode plate 10 Second side does not have to fitting, is formed with chamber between the second side in anode reaction area 11 and the second side of cathodic reaction zone 21 Body can radiate for anode reaction area 11 and cathodic reaction zone 21.

Two sides of screen 60 compress the second side in anode edge area 12 and the second side in cathode edge area 22 respectively Face, two sides of screen 60 connect with the second side in anode edge area 12 and the sealing of the second side in cathode edge area 22 respectively It connects, for example screen 60 is tightly connected by bonding, pressing or welding with anode edge area 12 and cathode edge area 22, screen 60 Connection type can be selected according to material, such as screen 60 be metal plate when, screen 60 is by way of being bonded or welded It is tightly connected with anode edge area 12 and cathode edge area 22；Or screen 60 be plastic plate when, screen 60 by bonding or pressure The mode of conjunction and anode edge area 12 and cathode edge area 22 are tightly connected；Or screen 60 be rubber slab when, screen 60 passes through The mode and anode edge area 12 of bonding or pressing and cathode edge area 22 are tightly connected.

According to the fuel cell separator part of the utility model embodiment, by anode edge area 12 and cathode edge area 22 Between be arranged screen 60, can effectively promote the heat dissipation performance of fuel cell separator part, facilitate promoted fuel cell it is cold But effect keeps the working condition of fuel cell more stable.

In some embodiments, as shown in Fig. 2, Fig. 4-Fig. 8, Fig. 9, Figure 11, Figure 13, Figure 15, Figure 17, Figure 18, fuel electricity Pond separator can also include: cold side component 50, and cold side component 50 is folded in the second side and yin in anode reaction area 11 So that anode plate 10 is spaced apart with cathode plate 20 between the second side of pole reaction zone 21, two sides point of cold side component 50 The second side in anode reaction area 11 and the second side of cathodic reaction zone 21 are not compressed.Cold side component 50 is equipped with for coolant The coolant flow passages of flowing, coolant is flowed by cold side component 50, to take away anode reaction area 11 and cathodic reaction zone 21 heat.

Screen 60 can surround cold side component 50, and screen 60 seals cold side component 50, prevents coolant from revealing, anode Marginal zone 12 and cathode edge area 22 are equipped with the coolant inlet 75 separated by anode reaction area 11 and cathodic reaction zone 21 and cold But agent outlet 76, as shown in Figure 4-Figure 7, screen 60 are equipped with screen runner 61, and coolant inlet 75 passes through corresponding screen runner 61 are connected to coolant flow passages, and coolant outlet 76 is connected to by corresponding screen runner 61 with coolant flow passages.

The a part of screen runner 61 as gas and liquid flow path, screen runner 61 can be to be added on screen 60 by machine Or the groove that the modes such as punching press generate, anode edge area 12, screen 60, cathode edge area 22, which are formed, fits closely face, can stop Gas passes through, and by getting screen runner 61 in the opposite position of screen 60, coolant can be guided to pass in and out.

Screen 60 can be metal plate, and screen runner 61 is by machining or is stamped and formed out；Or screen 60 can be modeling Flitch, screen runner 61 pass through injection molding or punching molding；Or screen 60 can be rubber slab, screen runner 61 passes through mould Molded or injection moulding.Cold side component 50 is made of fibrous material or metal material or rubber material.

The internal perisporium of screen 60 is connected with the periphery wall of cold side component 50, and the outer profile of cold side component 50 can be square Shape, screen 60 can be rectangle frame.

As shown in Fig. 8, Fig. 9, Figure 11, Figure 13, Figure 15, Figure 17, Figure 18, the thickness of screen 60 can be with cold side component 50 It is equal, the thickness of cold side component 50 can also be greater than, specifically needed according to the shape of anode plate 10 and cathode plate 20 come really Recognize.

Certainly, the thickness of screen 60 can be less than cold side component 50 thickness, such as by Figure 17 cathode plate 20 it is close Sealing groove 221 can make the thickness of screen 60 be less than the thickness of cold side component 50, need to only meet two of screen 60 to lower recess Side compresses cathode edge area 22 and anode edge area 10 and realizes sealing.

As shown in Fig. 4-Figure 20, the invention also discloses a kind of individual fuel cells, which includes: Anode plate 10, cathode plate 20, membrane electrode assembly 30 and screen 60.

Wherein, anode plate 10 includes anode reaction area 11 and the anode edge area 12 around anode reaction area 11, cathode plate 20 include cathodic reaction zone 21 and the cathode edge area 22 around cathodic reaction zone 21, and membrane electrode assembly 30 is folded in anode plate 10 First side and cathode plate 20 first side between, screen 60 is folded in the second side and cathode-side in anode edge area 12 Between the second side in edge area 22, and screen 60 is tightly connected with anode edge area 12 and cathode edge area 22.

Wherein cathode plate 20, cathode plate 20, screen 60 structure can be with the description in reference fuel battery separators, herein It repeats no more.

According to the individual fuel cells of the utility model embodiment, by anode edge area 12 and cathode edge area 22 it Between screen 60 is set, the perfect heat-dissipating of individual fuel cells, working condition is more stable.

The invention also discloses a kind of fuel cell pile, which includes: multiple as any of the above-described The fuel cell separator part and membrane electrode assembly 30 of kind embodiment, multiple fuel cell separator parts are stacked, and fuel cell Membrane electrode assembly 30 is folded between the anode plate 10 of separator and the cathode plate 20 of an adjacent fuel cell separator part.Or Person's fuel cell pile includes multiple individual fuel cells being stacked.

According to the fuel cell pile of the utility model embodiment, by anode edge area 12 and cathode edge area 22 it Between screen 60 is set, the perfect heat-dissipating of fuel cell pile, working condition is more stable.

Embodiment three

Below with reference to Fig. 2, Fig. 9-Figure 20 description according to the fuel cell separator part of the utility model embodiment.

It include anode plate according to the fuel cell separator part of the utility model one embodiment as shown in Fig. 2, Fig. 9-Figure 18 10, cathode plate 20 and gas circuit component 40.

Wherein, the first side of anode plate 10 is equipped with anode flow channel 111, and the first side of cathode plate 20 is equipped with cathode flow channels 211, the second side of cathode plate 20 and the second side of anode plate 10 are oppositely arranged, and cathode plate 20 is arranged in gas circuit component 40 First side, and cathode stream can be completely covered at least part of 40 covered cathode runner 211 of gas circuit component, gas circuit component 40 Road 211, can also covered cathode runner 211 a part.

Gas circuit component 40 can satisfy gas and water can by the combination of gas circuit component 40 and cathode flow channels 211 by demand Greatly to enhance the gas reaction space of cathode side, the gas free air space of cathode side is set to be greater than anode-side, in this way, solving Reaction compartment different problems needed for hydrogen-oxygen side, and cathode flow channels 211 and the structure of anode flow channel 111 can design it is basic It is identical, to guarantee that the volume of fuel cell separator part can maintain lesser range, and anode plate 10 and cathode plate 20 Production technology is simpler.

According to the fuel cell separator part of the utility model embodiment, pass through setting gas circuit component 40 and cathode flow channels 211 Combination, can effectively enhance the gas reaction space of cathode side, reduce the processing cost of fuel cell separator part, be conducive to industry Metaplasia produces.

As shown in Fig. 9, Figure 11, Figure 13, Figure 15, Figure 17, Figure 18, anode plate 10 is including anode reaction area 11 and around anode The anode edge area 12 of reaction zone 11, anode flow channel 111 are set to the first side in anode reaction area 11；Cathode plate 20 includes cathode Reaction zone 21 and the cathode edge area 22 for surrounding cathodic reaction zone 21, cathode flow channels 211 are set to the first side of cathodic reaction zone 21 The first side face of face, gas circuit component 40 and cathodic reaction zone 21 is stacked.

Cathode flow channels 211 include the groove set on 21 first side of cathodic reaction zone, and it is anti-that gas circuit component 40 is supported in cathode Answer the region for not setting cathode flow channels 211 of 21 first side of area.Gas circuit component 40 is not set with 21 first side of cathodic reaction zone The region of cathode flow channels 211 can be bonded setting.

As shown in Fig. 2, gas circuit component 40 can be plate, and gas circuit component 40 include multiple through-holes, through-hole for supply, Water passes through.The complex fiber material or metal material or rubber material that gas circuit component 40 is corroded by acid resistance are made.

As shown in Fig. 9-Figure 18, the first side of cathodic reaction zone 21 relative to cathode edge area 22 first side towards yin The second side recess of pole plate 20 is arranged to form deep gouge, and gas circuit component 40 is installed on deep gouge.Entire fuel can be compressed in this way The thickness of battery separators.The first side of cathodic reaction zone 21 and the junction of the first side in cathode edge area 22 are formed as Stairstepping, gas circuit component 40 pass through the ladder between the first side of cathodic reaction zone 21 and the first side in cathode edge area 22 Face 223 positions, and the cascaded surface 223 between the first side of cathodic reaction zone 21 and the first side in cathode edge area 22 is looped around The peripheral wall of gas circuit component 40 is outer to position gas circuit component 40.

It is understood that when processing gas circuit component 40 and cathode plate 20, by the shape and cathode plate of gas circuit component 40 20 cathodic reaction zone 21 is identical, and controls the machining accuracy of deep gouge, and such gas circuit component 40 can be embedded just below deep gouge, pass through The deep gouge of cathode plate 20 is directly realized by the positioning of gas circuit component 40.It, can be equal by deep gouge and gas circuit component 40 in order to simplify processing It is processed into cuboid, gas circuit component 40 can be effectively realized by the cooperation of the peripheral wall of the peripheral wall and deep gouge of gas circuit component 40 Positioning.

As shown in Fig. 9-Figure 20, the invention also discloses a kind of individual fuel cells, which includes: Anode plate 10, cathode plate 20, membrane electrode assembly 30 and gas circuit component 40.

Wherein, the first side of anode plate 10 is equipped with anode flow channel 111, and the first side of cathode plate 20 is equipped with cathode flow channels 211, membrane electrode assembly 30 and gas circuit component 40 are folded between the first side of anode plate 10 and the first side of cathode plate 20, And gas circuit component 40 is located at close to the side of cathode plate 20, at least covered cathode runner 211 of gas circuit component 40.

Cathode plate 20, cathode plate 20, gas circuit component 40 structure can be with the description in reference fuel battery separators, herein It repeats no more.

According to the individual fuel cells of the utility model embodiment, pass through setting gas circuit component 40 and cathode flow channels 211 In conjunction with can effectively enhance the gas reaction space of cathode side, reduce the processing cost of individual fuel cells, be conducive to industrial metaplasia It produces.

Membrane electrode assembly 30 can be formed as one with gas circuit component 40.Gas circuit is positioned by the deep gouge of cathode plate 20 in this way Component 40 can position membrane electrode assembly 30 simultaneously, thus simplify the assembly technology of individual fuel cells.

Membrane electrode assembly 30 and gas circuit component 40 can certainly be processed as to two individual components, first by gas when assembling Road component 40 is assembled into one in cathode plate 20, then is realized by the cooperation of membrane electrode assembly 30 and gas circuit component 40 to membrane electrode The positioning of component 30.

The invention also discloses a kind of fuel cell pile, which includes: multiple as any of the above-described The fuel cell separator part and membrane electrode assembly 30 of kind embodiment, multiple fuel cell separator parts are stacked, and fuel cell Membrane electrode assembly 30 is folded between the anode plate 10 of separator and the gas circuit component 40 of an adjacent fuel cell separator part. Or the fuel cell pile includes multiple individual fuel cells being stacked.Or the fuel cell pile includes multiple layers The individual fuel cells of folded setting.

According to the fuel cell pile of the utility model embodiment, pass through setting gas circuit component 40 and cathode flow channels 211 In conjunction with can effectively enhance the gas reaction space of cathode side, reduce the processing cost of fuel cell pile, be conducive to industrial metaplasia It produces.

Example IV

It include anode plate according to the fuel cell separator part of the utility model one embodiment as shown in Fig. 2, Fig. 9-Figure 20 10, cathode plate 20 and gas circuit component 40.

Wherein, the first side of anode plate 10 is equipped with anode flow channel 111, and anode plate 10 includes anode reaction area 11 and surround The anode edge area 12 in anode reaction area 11, anode flow channel 111 are set to the first side in anode reaction area 11；Cathode plate 20 includes The of cathodic reaction zone 21 and cathode edge area 22 around cathodic reaction zone 21, the second side of cathode plate 20 and anode plate 10 Two side faces are oppositely arranged.

Anode reaction area 11 can be rectangle, and anode edge area 12 can be rectangle frame, and cathodic reaction zone 21 can be square Shape, cathode edge area 22 can be rectangle frame, and screen 60 is rectangle frame.It should be noted that above-mentioned rectangle and rectangle frame are not It is limited to standard rectangular and standard rectangular frame, such as in anode plate 10 shown in Figure 21, at four exterior angles in anode edge area 12 Notch can be equipped with.

As shown in Fig. 9-Figure 18, the first side of cathodic reaction zone 21 relative to cathode edge area 22 first side towards yin The second side recess setting of pole plate 20 is to form deep gouge, and gas circuit component 40 is arranged in deep gouge, and gas circuit component 40 passes through deep gouge Peripheral wall positioning.

It is understood that when processing gas circuit component 40 and cathode plate 20, by the shape and cathode plate of gas circuit component 40 20 cathodic reaction zone 21 is identical, and controls the machining accuracy of deep gouge, and such gas circuit component 40 can be embedded just below deep gouge, pass through The deep gouge of cathode plate 20 is directly realized by the positioning of gas circuit component 40, and cathode flow channels 211 can be completely covered in gas circuit component 40.

In some embodiments, the junction of the first side of cathodic reaction zone 21 and the first side in cathode edge area 22 Be formed as stairstepping, gas circuit component 40 passes through between the first side of cathodic reaction zone 21 and the first side in cathode edge area 22 Cascaded surface 223 it is vertical with the first side of cathodic reaction zone 21, the peripheral wall that cascaded surface 223 is looped around gas circuit component 40 is outer with fixed Position gas circuit component 40.

In order to simplify processing, deep gouge and gas circuit component 40 can be processed into cuboid, pass through gas circuit component 40 The cooperation of the peripheral wall of peripheral wall and deep gouge can effectively realize the positioning of gas circuit component 40.

According to the fuel cell separator part of the utility model embodiment, by the way that above-mentioned gas circuit component 40 and cathode plate 20 is arranged Fit system, the positioning of gas circuit component 40 can be effectively realized, can simplify the assembler of fuel cell separator part in this way Skill.

In some embodiments, gas circuit component 40 with a thickness of a, the depth of deep gouge is h, and h can also be cascaded surface 223 Highly, meet: 0.5≤a/h≤1.5.It should be noted that thickness said herein and depth, for along fuel cell separator part Stacking direction.Inventor is had found by many experiments, and the depth of the thickness of gas circuit component 40, deep gouge is limited to above range When, the processability of gas circuit component 40 and cathode plate 20 can not be influenced while guaranteeing the positioning accuracy of gas circuit component 40 Energy.Certainly, the better effect when depth of deep gouge is equal or close with the thickness of gas circuit component 40, such as 0.9≤a/h≤1.1, or Person a=h.

In some embodiments, gas circuit component 40 is plate, and including multiple through-holes, through-hole for gas and water for passing through.Gas The complex fiber material or metal material or rubber material that road component 40 is corroded by acid resistance are made.

In some embodiments, cathodic reaction zone 21 can be plate shaped, i.e., cathodic reaction zone 21 can not set cathode stream Road 211, deep gouge out easy to process in this way, first side court of the first side in cathode edge area 22 relative to cathodic reaction zone 21 The direction protrusion of second side far from cathode plate 20.The structure of the cathode plate 20 of this structure is simple, easy to process.Certainly, Cathode plate 20 can also be other structures, for example cathodic reaction zone 21 can be the plate of concave-convex type.

Wherein, the first side of anode plate 10 is equipped with anode flow channel 111, and cathode plate 20 includes cathodic reaction zone 21 and surround The cathode edge area 22 of cathodic reaction zone 21, first side of the first side of cathodic reaction zone 21 relative to cathode edge area 22 Second side recess towards cathode plate 20 is arranged to form deep gouge, and membrane electrode assembly 30 and gas circuit component 40 are folded in anode plate 10 First side and cathode plate 20 first side between, gas circuit component 40 is arranged in deep gouge, and gas circuit component 40 passes through deep gouge Peripheral wall positioning.

According to the individual fuel cells of the utility model embodiment, by the way that above-mentioned gas circuit component 40 and cathode plate 20 is arranged Fit system can effectively realize the positioning of gas circuit component 40, can simplify the assembly technology of individual fuel cells in this way.

With reference to Fig. 9, membrane electrode assembly 30 includes anode gas circuit diffusion layer 31, the membrane electrode 33, cathode gas circuit being stacked Diffusion layer 32, membrane electrode 33 are folded between anode gas circuit diffusion layer 31 and cathode gas circuit diffusion layer 32, anode gas circuit diffusion layer 31 are folded in membrane electrode 33 between anode reaction area 11, and cathode gas circuit diffusion layer 32 is bonded with gas circuit component 40, cathode gas circuit The sum of thickness of diffusion layer 32 and gas circuit component 40 is b, and the depth of deep gouge is h, is met: 1≤b/h.That is, cathode gas circuit The sum of thickness of diffusion layer 32 and gas circuit component 40 cannot be less than the depth of deep gouge, can prevent the top of cathode edge area 22 from arriving in this way Membrane electrode 33.

In some embodiments, membrane electrode assembly 30 is formed as one with gas circuit component 40.Pass through cathode plate 20 in this way Deep gouge positioning gas circuit component 40 can position membrane electrode assembly 30 simultaneously, thus simplify the assembly technology of individual fuel cells.

According to the fuel cell pile of the utility model embodiment, by the way that above-mentioned gas circuit component 40 and cathode plate 20 is arranged Fit system can effectively realize the positioning of gas circuit component 40, can simplify the assembly technology of fuel cell pile in this way.

Embodiment five

Below with reference to Fig. 1, Fig. 3, Figure 21, Figure 22 description according to the fuel cell separator part of the utility model embodiment.

As shown in Fig. 1, Fig. 3, Figure 21, Figure 22, fuel cell separator part includes: reaction zone and marginal zone, and marginal zone is surround Reaction zone, such as reaction zone can be rectangle, and marginal zone can be rectangle frame, it should be noted that above-mentioned rectangle and rectangle frame It is not limited in standard rectangular and standard rectangular frame, such as fuel cell separator part shown in Fig. 3, four exterior angles of marginal zone Place can be equipped with notch.

Marginal zone is equipped with escape groove 77, and escape groove 77 is for being pressed fuel cell separator part, and escape groove 77 is along fuel cell The thickness direction of separator runs through marginal zone, and distance of the escape groove 77 close to the edge of reaction zone to reaction zone is c, meets: c >= 20mm。

It is understood that fuel cell pile is stacked structure, fuel cell separator part is also stacked structure, will fired When material battery separators are stacked as fuel cell pile, need to compress fuel cell separator part using fastener, so that each Fuel cell separator part can fit closely, and fastener is through escape groove 77 to run through combustion on the stacking direction of fuel cell pile Expect battery stack.

By the way that escape groove 77 is directly arranged in marginal zone, thus it is pressed frame without in addition setting, can greatly simplifies Press mounting structure, and since fastening force can directly act on fuel cell separator part, apply relatively smaller fastening force so i.e. The press fitting for meeting sealing can be achieved, and the pressure for being pressed each region of post fuel battery stack is more balanced, fuel cell electricity The performance of heap is more preferable.

Distance c of the escape groove 77 close to the edge of reaction zone to reaction zone is the edge to the edge of reaction zone of escape groove 77 The shortest distance, which influences the sealing effect of reaction zone.Inventor is had found by many experiments, is limited escape groove 77 and is leaned on The edge in proximal response area to reaction zone distance c after above range, as setting escape groove 77 caused by marginal zone be thinned Effect does not interfere with the sealing to reaction zone.Such as c=25mm perhaps c=30mm or c=40mm.

According to the fuel cell separator part of the utility model embodiment, by the way that above structure form is directly arranged in reaction zone Escape groove 77, facilitate simplify fuel cell pile press-loading process, do not influence the sealing effect of reaction zone, and make fuel The pressure of each region of battery stack is more balanced.

In some embodiments, as shown in Fig. 1, Fig. 3, Figure 21, Figure 22, escape groove 77 deviates from the one of reaction zone in marginal zone Side is opened wide, that is to say, that escape groove 77 is not closed-loop type, and escape groove 77 is equivalent to be lacked what the outer side edges edge of reaction zone opened up Mouthful, in this way, the escape groove 77 for meeting target size can be arranged, and guarantee evacuation in the case where the limited width of reaction zone Distance c of the slot 77 close to the edge of reaction zone to reaction zone is sufficiently large, does not influence the sealing effect of reaction zone.In press fitting fuel electricity When the pile of pond, the escape groove 77 of above-mentioned shape can be fastener not directly through fuel cell separator part itself, will not be to exhausted Edge and sealing impact, and since the position of escape groove 77 is in inside separator edge, so as to reduce required fastening Power, it is more uniform with season fuel cell pile pressure.

As shown in Fig. 1, Fig. 3, Figure 21, Figure 22, the boundary line of escape groove 77 and marginal zone is arc, and fastener usually has Cylindrical cross-section, setting arc boundary line can preferably with appended claims.Escape groove 77 can be opening in diagram on one side The semicircle opened, or arch, crescent, or be the open polygon in one side, such as rectangle, or be irregular shape Shape.

As shown in figure 3, marginal zone include: two along the first edge area that first direction is oppositely arranged, two along second party To the second edge area being oppositely arranged, each second edge area is equipped with escape groove 77.Escape groove 77 is usually symmetrical, with Keep pressure assembling force more balanced.The number of escape groove 77 is even numbers, and two be not limited in diagram, can also be more.

As shown in figure 3, one in Liang Ge first edge area is equipped with coolant outlet 76 and fuel gas inlet 71, two the Another in one marginal zone is equipped with coolant inlet 75 and fuel gas outlet 72；One in Liang Ge second edge area is equipped with oxygen Agent import 73, another in Liang Ge second edge area are equipped with oxidant outlet 74.Fuel gas inlet 71 is positioned below, fuel Gas outlet 72 is located at top, and hydrogen from top to bottom, is conducive to the wetting of film.That is, escape groove 77 setting oxidant into Side where outlet, escape groove 77 are located between adjacent two oxidant inlets 73 or oxidant outlet 74.

Since the inlet and outlet number of oxidant is more, the gross area is big, and escape groove 77 is designed at this, to oxidant inlet and outlet The gross area influences smaller.It should be noted that when designing escape groove 77, the oxidant outlet 74 as brought by escape groove 77 And the reduction volume of the total area of oxidant inlet 73 be not more than no escape groove 77 when the gross area 1/10th.

In some embodiments, as shown in figure 21 and figure, fuel cell separator part includes anode plate 10 and cathode plate 20. Anode plate 10 includes anode reaction area 11 and anode edge area 12, and anode edge area 12 is arranged around anode reaction area 11, cathode Plate 20 includes cathodic reaction zone 21 and cathode edge area 22, and cathode edge area 22 is arranged around cathodic reaction zone 21, anode reaction The first side in area 11 and the first side of cathodic reaction zone 21 are used to connect the membrane electrode assembly 30 of fuel cell pile.Anode Marginal zone 12 and cathode edge area 22 are equipped with escape groove 77, and the escape groove 77 in anode edge area 12 and cathode edge area 22 The setting of 77 face of escape groove.

Fuel cell separator part further includes screen 60, and screen 60 is folded in the second side and cathode-side in anode edge area 12 Between the second side in edge area 22, and screen 60 is all connected with anode edge area 12 and cathode edge area 22, and screen 60 also is provided with Escape groove 77, the escape groove 77 of screen 60 and 77 face of escape groove in cathode edge area 22 are arranged.

Fuel cell separator part further includes cold side component 50, and cold side component 50 is folded in the second of anode reaction area 11 So that anode plate 10 is spaced apart with cathode plate 20 between side and the second side of cathodic reaction zone 21, the two of cold side component 50 A side compresses the second side in anode reaction area 11 and the second side of cathodic reaction zone 21 respectively.Cold side component 50 is equipped with For the coolant flow passages of coolant flowing, coolant is flowed by cold side component 50, to take away anode reaction area 11 and yin The heat of pole reaction zone 21.

Screen 60 can surround cold side component 50, and screen 60 seals cold side component 50, prevents coolant from revealing, anode Marginal zone 12 and cathode edge area 22 are equipped with coolant inlet 75 and coolant outlet 76, and as shown in Figure 4-Figure 7, screen 60 is equipped with Screen runner 61, coolant inlet 75 are connected to by corresponding screen runner 61 with coolant flow passages, and coolant outlet 76 passes through Corresponding screen runner 61 is connected to coolant flow passages.

Since above-mentioned cold side component 50 is arranged, in this way it is not necessary that coolant flow channel is arranged in marginal zone, there can be enough skies Between escape groove 77 is set, and the design of escape groove 77 does not influence cooling flowing path.

As shown in Fig. 1, Fig. 3, Figure 21, Figure 22, the invention also discloses a kind of individual fuel cells, the individual fuels Battery includes: reaction zone and the marginal zone around reaction zone, and marginal zone is equipped with the escape groove for being pressed fuel cell separator part 77, escape groove 77 runs through marginal zone along the thickness direction of individual fuel cells, and escape groove 77 is close to the edge of reaction zone to reaction The distance in area is c, is met: c >=20mm.

Reaction zone, marginal zone, escape groove 77 structure can be no longer superfluous herein with the description in reference fuel battery separators It states.

According to the individual fuel cells of the utility model embodiment, by the way that above structure form is directly arranged in reaction zone Escape groove 77 facilitates the press-loading process for simplifying individual fuel cells, does not influence the sealing effect of reaction zone, and makes fuel electric The pressure of each region of pond pile is more balanced.

In some embodiments, individual fuel cells include anode plate 10 and cathode plate 20.Anode plate 10 includes that anode is anti- Area 11 and anode edge area 12 are answered, anode edge area 12 is arranged around anode reaction area 11, and cathode plate 20 includes cathodic reaction zone 21 and cathode edge area 22, cathode edge area 22 is arranged around cathodic reaction zone 21, the first side and yin in anode reaction area 11 The first side of pole reaction zone 21 is used to connect the membrane electrode assembly 30 of fuel cell pile.Anode edge area 12 and cathode edge Area 22 is equipped with escape groove 77, and the escape groove 77 in anode edge area 12 and 77 face of escape groove in cathode edge area 22 are arranged.

The invention also discloses a kind of fuel cell pile, which includes: multiple as any of the above-described The fuel cell separator part and membrane electrode assembly 30 of kind embodiment, multiple fuel cell separator parts are stacked, and fuel cell Membrane electrode assembly 30 is folded between the anode plate 10 of separator and the cathode plate 20 of an adjacent fuel cell separator part, even Fitting is through escape groove 77 fuel cell separator part, membrane electrode assembly 30 to be pressed.

According to the fuel cell pile of the utility model embodiment, by the way that above structure form is directly arranged in reaction zone Escape groove 77 facilitates the press-loading process for simplifying fuel cell pile, does not influence the sealing effect of reaction zone, and makes fuel electric The pressure of each region of pond pile is more balanced.

Embodiment six

Below with reference to Fig. 1-Fig. 2 and Figure 18-Figure 20 description according to the individual fuel cells of the utility model embodiment.

As shown in Fig. 1-Fig. 2 and Figure 18-Figure 20, the individual fuel cells according to the utility model one embodiment include: Anode plate 10, cathode plate 20, membrane electrode assembly 30.

Wherein, anode plate 10 includes anode reaction area 11 and anode edge area 12, and anode edge area 12 is around anode reaction Area 11 is arranged, and cathode plate 20 includes cathodic reaction zone 21 and cathode edge area 22, and cathode edge area 22 is around cathodic reaction zone 21 Setting.

Membrane electrode assembly 30, membrane electrode assembly 30 are folded in the first side of anode plate 10 and the first side of cathode plate 20 Between.It should be noted that the first side of anode plate 10, the first side in anode reaction area 11, anode edge area 12 One side is respectively positioned on the same side of anode plate 10, the second side of anode plate 10, the second side in anode reaction area 11, anode side The second side in edge area 12 is respectively positioned on the same side of anode plate 10；The first side of cathode plate 20, cathodic reaction zone 21 first Side, cathode edge area 22 first side be respectively positioned on the same side of cathode plate 20, the second side of cathode plate 20, cathode reaction The second side in area 21, the second side in cathode edge area 22 are respectively positioned on the same side of cathode plate 20；Cathode plate 20 and anode plate 10 side being oppositely arranged with membrane electrode assembly 30 is first side, first side and second side back to setting.

As shown in Figure 18-Figure 20, anode reaction area 11 at least partly with cathodic reaction zone 21 at least partly towards mutual Deviate from direction recess, anode edge area 12 at least partly with cathode edge area 22 at least partly towards direction close to each other Protrusion.

In this way, the whole shape that central concave edge protrusion is presented of anode plate 10, the whole presentation center of cathode plate 20 The shape of concave edges protrusion after the fastening of cathode plate 20, can be formed sufficiently large by anode plate 10 in the reaction zone at center Space for accommodating the main part of membrane electrode assembly 30, accordingly, the space of reaction zone is to membrane electrode assembly 30 and attached The limitation of components is smaller, can be designed that the membrane electrode assembly 30 and attached components of more conducively electrochemical reaction, and on side Anode plate 10 at edge is small at a distance from cathode plate 20, convenient for sealing, can save sealing material.

According to the individual fuel cells of the utility model embodiment, by anode plate 10 and yin that above structure form is arranged Pole plate 20 can limit sufficiently large reaction zone, keep the reaction efficiency of individual fuel cells higher, and can save sealing material Material.

In some embodiments, as shown in figure 18, following form: membrane electrode assembly 30 is taken in the sealing of individual fuel cells Including the anode gas circuit diffusion layer 31, membrane electrode 33, cathode gas circuit diffusion layer 32 being stacked, and anode gas circuit diffusion layer 31 with 11 face of anode reaction area, cathode gas circuit diffusion layer 32 and 21 face of cathodic reaction zone, membrane electrode 33 stretch out the diffusion of anode gas circuit Layer 31 and at least partly outer of cathode gas circuit diffusion layer 32 are provided with insulation frame 34, and insulation frame 34 is folded in 12 He of anode edge area Between the part mutually protruded in cathode edge area 22.

Insulating frame 34 can be in the form of preforming be integrated with membrane electrode assembly 30.Insulation frame 34 is that having for insulation is elastic Materials for support, and have certain degree of hardness.Pass through the phase of insulate frame 34 and anode edge area 12 and cathode edge area 22 when assembly The positioning of membrane electrode assembly 30 is realized in the cooperation for the part mutually protruded.When assembly, fastening force is applied to insulation frame to stacking direction The sealing for individual fuel cells is completed in 34 extrusion deformations formed.

In this way, being just not necessarily to that seal groove and sealing element 222 in addition is arranged when sealing individual fuel cells, it is possible to reduce monomer The component number of fuel cell.By the way that the part mutually protruded directly is arranged i.e. in anode edge area 12 and cathode edge area 22 Positioning, sealing and the insulation that membrane electrode assembly 30 can be achieved, enormously simplify assembly process.

Axis and cathode edge area 22 of the part of the protrusion in anode edge area 12 along the stacking direction of individual fuel cells Protrusion part along individual fuel cells stacking direction axis distance be f, meet: f≤10 μm.As Figure 18-20 institute Show, anode edge area 12 has the anode clamping part 126 protruded towards membrane electrode assembly 30, and cathode edge area 22 has towards membrane electrode The cathode clamping part 126 that component 30 protrudes, anode clamping part 126 are pressed from both sides along the axis and cathode of the stacking direction of individual fuel cells It is f that portion 126, which is held, along the distance of the axis of the stacking direction of individual fuel cells, is met: f≤10 μm.

That is, the machining accuracy of anode clamping part 126 and cathode clamping part 126 needs to meet certain requirement, this Sample anode clamping part 126 and cathode clamping part 126 face can be arranged, in actual operation, anode clamping part 126 and yin substantially Pole clamping part 126 should can guarantee the stability of sealing and positioning in the dislocation for being parallel to stacking direction between 2 μm to 10 μm, And difficulty of processing is little.

As shown in figure 19, the first side in anode reaction area 11 is equipped with anode flow channel 111, and anode flow channel 111 is towards away from film The direction of electrode assembly 30 is recessed, and anode edge area 12 has the anode clamping part 126 protruded towards membrane electrode assembly 30.Anode side Do not set that the region of anode flow channel 111 is concordant to be arranged in the main part in edge area 12 and the first side in anode reaction area 11.

Anode plate 10 can be using the two-sided concave-convex structure by that can have formation of the malleable material by punching press.Such as Shown in Figure 19, two-sided staggeredly symmetrical concaveconvex structure is presented in anode plate 10.Anode plate 10 includes the different plane of three height: sun Pole runner bottom surface A1, anode flow channel top surface A2 and anode clamping part crowning A3.The entirety in anode edge area 12 flushes in anode Runner top surface A2, and anode clamping part crowning A3 is higher than anode flow channel top surface A2.Being equivalent in this way reduces an anode plate 10 datum plane, convenient for the processing of anode plate 10.

As shown in figure 20, cathodic reaction zone 21 is equipped with cathode flow channels 211, and cathode flow channels 211 are towards away from membrane electrode assembly 30 Direction recess, cathode edge area 22 relative to cathodic reaction zone 21 towards close to membrane electrode assembly 30 direction protrude, in yin Pole reaction zone 21 forms deep gouge.Cathode edge area 22 has the cathode clamping part 126 protruded towards membrane electrode assembly 30.

Cathode plate 20 can be using the two-sided concave-convex structure by that can have formation of the malleable material by punching press.Such as Shown in Figure 19, two-sided staggeredly symmetrical concaveconvex structure is presented in cathode plate 20.Cathode plate 20 includes four datum planes: cathode flow channels Bottom surface C1, cathode flow channels top surface C2, cathode clamping part crowning C3, cathode edge area plane C4.

As shown in figure 15, in some embodiments, individual fuel cells can also include: gas circuit component 40, gas circuit component 40 are arranged in deep gouge.The junction of the first side of the first side and cathode edge area 22 of cathodic reaction zone 21 is formed as ladder Shape, gas circuit component 40 pass through the cascaded surface between the first side of cathodic reaction zone 21 and the first side in cathode edge area 22 223 positioning.

Gas circuit component 40 can be plate, and gas circuit component 40 includes multiple through-holes, and through-hole for gas and water for passing through.Gas Road component 40, which can satisfy gas and water, can greatly be increased by demand by the combination of gas circuit component 40 and cathode flow channels 211 The gas reaction space of strong cathode side makes the gas free air space of cathode side be greater than anode-side, in this way, solving needed for hydrogen-oxygen side Reaction compartment different problems, and cathode flow channels 211 and the structure of anode flow channel 111 can design it is essentially identical, thus Guarantee that the volume of fuel cell separator part can maintain lesser range, and the production technology of anode plate 10 and cathode plate 20 is more Simply.

As shown in Figure 1, the fuel cell pile includes: multiple the invention also discloses a kind of fuel cell pile Such as the individual fuel cells of above-mentioned any embodiment, multiple individual fuel cells are stacked, the cathode of individual fuel cells The second side of plate 20 and the second side of the anode plate 10 of an adjacent individual fuel cells are oppositely arranged.

According to the fuel cell pile of the utility model embodiment, film is directly pushed down by the way that seal is arranged in seal groove The method of electrode 33 realizes positioning, sealing and insulation, enormously simplifies the assembly process of fuel cell pile.

As shown in Fig. 2 and Figure 18, in some embodiments, fuel cell pile can also include: 50 He of cold side component Screen 60.

Cold side component 50 be folded in the cathode plate 20 of an individual fuel cells second side and an adjacent list So that anode plate 10 is spaced apart with cathode plate 20 between the second side of the anode plate 10 of fluid fuel battery, cold side component 50 is set There are the coolant flow passages for coolant flowing.

Cold side component 50 is oppositely arranged with anode reaction area 11 and cathodic reaction zone 21, and screen 60 is around cold side component 50 settings, screen 60 seal cold side component 50, prevent coolant from revealing.Screen 60 is folded in the yin of an individual fuel cells Between the second side in the anode edge area 12 of the second side of pole marginal zone 22 and an adjacent individual fuel cells, screen 60 are equipped with the screen runner 61 being connected to coolant flow passages.

Two sides of screen 60 compress the second side in anode edge area 12 and the second side in cathode edge area 22 respectively Face, two sides of screen 60 connect with the second side in anode edge area 12 and the sealing of the second side in cathode edge area 22 respectively It connects, for example screen 60 is tightly connected by being bonded or welded with anode edge area 12 and cathode edge area 22.

Screen 60 is with for metal plate, screen runner 61 is by machining or is stamped and formed out.Cold side component 50 is undulation degree Material or metal material or rubber material are made.

It is understood that anode reaction area 11 and 21 face of cathodic reaction zone are arranged, electrochemical reaction is occurred mainly in Between anode reaction area 11 and cathodic reaction zone 21, such anode reaction area 11 and the heat at cathodic reaction zone 21 are more, lead to Setting cold side component 50 and screen 60 are crossed, anode plate 10 and cathode plate 20 can be separated, second side of such anode plate 10 Face does not have to be bonded with the second side of cathode plate 20, the second side in anode reaction area 11 and the second side of cathodic reaction zone 21 Between cold side component 50 is set in the cavity that is formed, can radiate for anode reaction area 11 and cathodic reaction zone 21.

Each technical characteristic in above-described embodiment one to six can be bound to each other to form more in the absence of conflict Fuel cell separator plate in a embodiment, such as embodiment one can also include screen 60, cold side component in embodiment two As soon as the fuel cell separator plate in 50 etc. or embodiment can also include the gas circuit component 40 etc. in embodiment three, herein not It repeats one by one again.

Below in conjunction with the feature of above-mentioned multiple embodiments, one embodiment is described in detail as example.

Embodiment seven

As shown in Fig. 1-Figure 10 and Figure 21-Figure 22, according to the fuel cell separator part packet of the utility model one embodiment It includes: anode plate 10, cathode plate 20, gas circuit component 40, cold side component 50, screen 60.

Wherein, anode plate 10 includes anode reaction area 11 and the anode edge area 12 around anode reaction area 11, anode stream Road 111 is set to the first side in anode reaction area 11, for example anode reaction area 11 can be rectangle, and anode edge area 12 can be Rectangle frame；Cathode plate 20 includes cathodic reaction zone 21 and the cathode edge area 22 around cathodic reaction zone 21, and cathode flow channels 211 are set First side in cathodic reaction zone 21.

Anode flow channel 111 at least partly extends in a first direction, and cathode flow channels 211 are at least partly prolonged in a second direction It stretches, first direction is vertical with second direction.

Screen 60 is folded between the second side in anode edge area 12 and the second side in cathode edge area 22, and screen 60 are all connected with anode edge area 12 and cathode edge area 22.Cold side component 50 is folded in the second side in anode reaction area 11 So that anode plate 10 is spaced apart with cathode plate 20 between the second side of cathodic reaction zone 21, two sides of cold side component 50 Face compresses the second side in anode reaction area 11 and the second side of cathodic reaction zone 21 respectively.Cold side component 50 is equipped with cooling supply But the coolant flow passages of agent flowing, coolant is flowed by cold side component 50, so that it is anti-with cathode to take away anode reaction area 11 Answer the heat in area 21.

The first side of cathodic reaction zone 21 relative to cathode edge area 22 first side towards cathode plate 20 second side Face recess setting is to form deep gouge, and the setting of gas circuit component 40 is in deep gouge, and gas circuit component 40 is positioned by the peripheral wall of deep gouge.

Gas circuit component 40 includes multiple through-holes, and for through-hole for passing through for gas and water, it is logical that gas circuit component 40 can satisfy gas and water Demand is crossed, by the combination of gas circuit component 40 and cathode flow channels 211, can greatly enhance the gas reaction space of cathode side, The gas free air space of cathode side is set to be greater than anode-side, in this way, reaction compartment different problems needed for solving hydrogen-oxygen side, and Cathode flow channels 211 and the structure of anode flow channel 111 can design it is essentially identical, to guarantee the volume of fuel cell separator part Lesser range can be maintained, and the production technology of anode plate 10 and cathode plate 20 is simpler.

Anode edge area 12 and cathode edge area 22 are equipped with escape groove 77, and the escape groove 77 in anode edge area 12 and yin 77 face of escape groove of pole marginal zone 22 is arranged.Escape groove 77 is for being pressed fuel cell separator part, and escape groove 77 is along fuel electricity The thickness direction of pond separator runs through marginal zone, and distance of the escape groove 77 close to the edge of reaction zone to reaction zone is c, meets: c ≥20mm.Fuel cell pile is stacked structure, and fuel cell separator part is also stacked structure, by fuel cell separator part heap It when being stacked as fuel cell pile, needs to compress fuel cell separator part using fastener, so that each fuel cell separator part It can fit closely, fastener is through escape groove 77 to run through fuel cell pile on the stacking direction of fuel cell pile.

According to the fuel cell separator part of the utility model embodiment, using vertical run, and by using easy to process Simple flow path features, optimize the flowing for generating water and coolant, while also avoiding highly complex processing.Pass through simultaneously Processing is optimized to fuel cell separator part entirety bumps, is able to needed for meeting hydrogen-oxygen side while not increasing width of flow path Different reaction compartments.It is formed by difference in height using bumps simultaneously, realizes the precise positioning of membrane electrode assembly 30.It can subtract Pressure assembling force needed for small assembly pile, and enable inside battery pressure more uniform.

As shown in Fig. 1-Figure 10 and Figure 21-Figure 22, the invention also discloses a kind of individual fuel cells.

Individual fuel cells according to the utility model one embodiment include: anode plate 10, cathode plate 20, gas circuit component 40, cold side component 50, screen 60 and membrane electrode assembly 30.

Membrane electrode assembly 30 includes anode gas circuit diffusion layer 31, membrane electrode 33, the cathode gas circuit diffusion layer 32 being stacked, Membrane electrode assembly 30 is folded between the first side of anode plate 10 and the first side of cathode plate 20, and anode gas circuit diffusion layer 31 with 11 face of anode reaction area, cathode gas circuit diffusion layer 32 and 21 face of cathodic reaction zone, 31 sandwiched of anode gas circuit diffusion layer Between the first side and membrane electrode 33 in anode reaction area 11, cathode gas circuit diffusion layer 32 is folded in gas circuit component 40 and film electricity Between pole 33.

Gas circuit component 40 includes multiple through-holes, and for through-hole for passing through for gas and water, it is logical that gas circuit component 40 can satisfy gas and water Demand is crossed, by the combination of gas circuit component 40 and cathode flow channels 211, can greatly enhance the gas reaction space of cathode side, The gas free air space of cathode side is set to be greater than anode-side, in this way, reaction compartment different problems needed for solving hydrogen-oxygen side, and Cathode flow channels 211 and the structure of anode flow channel 111 can design it is essentially identical, to guarantee that the volume of individual fuel cells can To maintain lesser range, and the production technology of anode plate 10 and cathode plate 20 is simpler.

Membrane electrode assembly 30 is formed as one with gas circuit component 40.Gas circuit component is positioned by the deep gouge of cathode plate 20 in this way 40 can position membrane electrode assembly 30 simultaneously, thus simplify the assembly technology of individual fuel cells.

Anode edge area 12 and cathode edge area 22 are equipped with escape groove 77, and the escape groove 77 in anode edge area 12 and yin 77 face of escape groove of pole marginal zone 22 is arranged.Escape groove 77 is for being pressed individual fuel cells, and escape groove 77 is along individual fuel The thickness direction of battery runs through marginal zone, and distance of the escape groove 77 close to the edge of reaction zone to reaction zone is c, meets: c >= 20mm.Fuel cell pile is stacked structure, and individual fuel cells are also stacked structure, and individual fuel cells are being stacked as firing When expecting battery stack, need to compress individual fuel cells using fastener, so that each individual fuel cells can fit closely, Fastener is through escape groove 77 to run through fuel cell pile on the stacking direction of fuel cell pile.

According to the individual fuel cells of the utility model embodiment, using vertical run, and by using easy to process Simple flow path features optimize the flowing for generating water and coolant, while also avoiding highly complex processing.Simultaneously by pair Individual fuel cells entirety bumps optimize processing, are able to needed for meeting hydrogen-oxygen side while not increasing width of flow path not Same reaction compartment.It is formed by difference in height using bumps simultaneously, realizes the precise positioning of membrane electrode assembly 30.Dress can be reduced With pressure assembling force needed for pile, and enable inside battery pressure more uniform.

The structure of cathode plate 20 and anode plate 10 in above-described embodiment one to seven can be described with reference to following embodiments.

In some embodiments, as shown in Fig. 4 and Figure 14, anode plate 10 be include the plate shaped of groove, and anode flow channel 111 include the groove set on 10 first side of anode plate, and cathode plate 20 is include groove plate shaped, and cathode flow channels 211 include Set on the groove of 20 first side of cathode plate.Anode plate 10, cathode plate 20 first side include groove, anode plate 10, cathode The second side of plate 20 can be planar shaped, in this way convenient for stacking.Graphite, composite graphite can be used in anode plate 10, cathode plate 20 Or corrosion resistant metal the modes such as adds to be made by machine.

In further embodiments, as shown in Figure 12, Figure 16, Figure 19 and Figure 20, anode plate 10 is in first side and the The concave-convex plate body of two side faces, cathode plate 20 are the plate body concave-convex in first side and second side.Anode plate 10, cathode plate 20 can be using malleable resistant material such as stainless steel, aluminium alloy, titanium alloy etc. by being stamped and formed out with biconcave Convex structure.Two-sided staggeredly symmetrical concaveconvex structure is all presented in anode plate 10, cathode plate 20.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ", The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.

While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that: These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective And modification, the scope of the utility model are defined by the claims and their equivalents.

Claims

1. a kind of individual fuel cells characterized by comprising

Anode plate, the anode plate include anode reaction area and the anode edge area around the anode reaction area；

Cathode plate, the cathode plate include cathodic reaction zone and the cathode edge area around the cathodic reaction zone；

Membrane electrode assembly, the membrane electrode assembly are folded in the first side of the anode plate and the first side of the cathode plate Between；Wherein, the anode reaction area at least partly with the cathodic reaction zone at least partly towards the direction mutually deviated from Recess, the anode edge area are at least partly at least partly protruded towards direction close to each other with the cathode edge area.

2. individual fuel cells according to claim 1, which is characterized in that the membrane electrode assembly includes being stacked Anode gas circuit diffusion layer, membrane electrode, cathode gas circuit diffusion layer, and the anode gas circuit diffusion layer and the anode reaction area are just It is right, the cathode gas circuit diffusion layer and the cathodic reaction zone face, the membrane electrode stretch out the anode gas circuit diffusion layer and At least partly outer of the cathode gas circuit diffusion layer is provided with insulation frame, and the insulation frame is folded in the anode edge area and institute It states between the part mutually protruded in cathode edge area.

3. individual fuel cells according to claim 2, which is characterized in that the part edge of the protrusion in the anode edge area The part of the axis of the stacking direction of the individual fuel cells and the protrusion in the cathode edge area is along the individual fuel electricity The distance of the axis of the stacking direction in pond is f, is met: f≤10 μm.

4. individual fuel cells according to claim 2, which is characterized in that the first side in the anode reaction area is equipped with Anode flow channel, the anode flow channel are recessed towards the direction away from the membrane electrode assembly, and the anode edge area has towards described The anode clamping part of membrane electrode assembly protrusion.

5. individual fuel cells according to claim 4, which is characterized in that the main part in the anode edge area and institute It states and does not set the region of the anode flow channel in the first side in anode reaction area and be concordantly arranged.

6. individual fuel cells according to claim 2, which is characterized in that the cathodic reaction zone is equipped with cathode flow channels, The cathode flow channels are recessed towards the direction away from the membrane electrode assembly, and the cathode edge area is relative to the cathodic reaction zone It is protruded towards the direction close to the membrane electrode assembly, to form deep gouge in the cathodic reaction zone.

7. individual fuel cells according to claim 6, which is characterized in that further include: gas circuit component, the gas circuit component It is arranged in the deep gouge.

8. individual fuel cells according to claim 7, which is characterized in that the first side of the cathodic reaction zone and institute The junction for stating the first side in cathode edge area is formed as stairstepping, the gas circuit component pass through the cathodic reaction zone the Cascaded surface positioning between one side and the first side in the cathode edge area.

9. individual fuel cells according to claim 6, which is characterized in that the cathode edge area has towards the film electricity The cathode clamping part of pole component protrusion.

10. individual fuel cells according to claim 1 to 9, which is characterized in that the anode plate and described Cathode plate is the metal plate of two-sided concave-convex.

11. a kind of fuel cell pile characterized by comprising such as individual fuel of any of claims 1-10 Battery, multiple individual fuel cells are stacked, the second side of the cathode plate of the individual fuel cells and adjacent The second side of the anode plate of one individual fuel cells is oppositely arranged.

12. fuel cell pile according to claim 11, which is characterized in that further include: cold side component, the cooling Side component is folded in the second side and an adjacent individual fuel cells of the cathode plate of the individual fuel cells Between the second side of anode plate, the cold side component is equipped with the coolant flow passages flowed for coolant.

13. fuel cell pile according to claim 12, which is characterized in that further include: screen, the cold side component It is oppositely arranged with the anode reaction area and the cathodic reaction zone, the screen is arranged around the cold side component, and institute State screen be folded in the individual fuel cells cathode edge area second side and an adjacent individual fuel electricity Between the second side in the anode edge area in pond, the screen is equipped with the screen runner being connected to the coolant flow passages.