CN108511774A - Bipolar plates with coolant flow passages - Google Patents
Bipolar plates with coolant flow passages Download PDFInfo
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- CN108511774A CN108511774A CN201810373488.0A CN201810373488A CN108511774A CN 108511774 A CN108511774 A CN 108511774A CN 201810373488 A CN201810373488 A CN 201810373488A CN 108511774 A CN108511774 A CN 108511774A
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- 239000000446 fuel Substances 0.000 claims abstract description 254
- 239000007800 oxidant agent Substances 0.000 claims abstract description 167
- 230000001590 oxidative effect Effects 0.000 claims abstract description 167
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 22
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- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The bipolar plates with coolant flow passages of the present invention, including fuel flow field plate and oxidant stream field plate, the fuel flow field plate and oxidant stream field plate have corrugated feature；Have in the bipolar plates to positive area and at least two dislocation areas；Two dislocation areas are separated by described to just distinguishing；In including the fuel cell pile of the bipolar plates, coolant can flow into the coolant flow passages in one of dislocation area from coolant entrance channel without the coolant flow passages to positive area, and can flow into coolant outlet channel without the coolant flow passages to positive area from the coolant flow passages in another dislocation area；Fuel flow channel, oxidant flow channel and coolant flow passages are S-shaped or snakelike, and the coolant flow passages in described two dislocation areas belong to the longitudinal sections of snakelike coolant flow passages.By the way that the dislocation area is arranged, can make under the premise of not increasing bipolar plate thickness coolant entrance channel, coolant outlet channel and bipolar plates interlayer coolant flow passages completely through, to allow coolant to flow through total overall reaction area, and then improve the cooling effect of fuel cell pile.
Description
Technical field
The present invention relates to a kind of bipolar plates, coolant flow passages are carried used in especially a kind of large-scale fuel cell pile
Bipolar plates.
Background technology
Fuel cell is a kind of electrochemical reaction appts that can convert chemical energy to electric energy, due to not by Carnot cycle
Limitation, theoretically its energy conversion efficiency (reach as high as 80% or more higher than internal combustion engine, be generally not less than 50%), and have
Have zero-emission, without mechanical noise many advantages, such as, therefore receive favor in military and civilian field.It is used in fuel cell
Electrolyte it is different, fuel cell can be divided into five types：Alkaline fuel cell (AFC), phosphoric acid fuel cell (PAFC),
Molten carbonate fuel cell (MCFC), solid oxide fuel cell (SOFC) and Proton Exchange Membrane Fuel Cells (PEMFC).
Wherein PEMFC, as electrolyte, has simple in structure, operating temperature is low, energy conversion efficiency is high etc. using solid polymer membrane
Advantage has advantageous advantage as mobile power.It is reported that Germany, France have developed using PEMFC as power at present
Submarine, and top motor corporation of the worlds Deng Shuojia of Toyota Motor company has then developed the amount using PEMFC as power
The fuel cell electric vehicle (Fuel Cell Electric Vehicle, be abbreviated as FCEV or FCV) of productionization.As a kind of heavy
The mobile electrical source of power wanted, PEMFC have good development prospect.
Each PEMFC monocells by two pole plates (anode plate and a cathode plate) and are clipped between two pole plates
Membrane electrode assembly at.The membrane electrode is fitted together by anode catalyst, proton exchange membrane, cathod catalyst and is constituted.In sun
Gas diffusion layers (GDL), the gas diffusion are further typically provided between pole plate and membrane electrode and between membrane electrode and cathode plate
Layer is usually made of ventilative carbon paper or carbon cloth, some documents are using gas diffusion layers as a part for membrane electrode, and some are literary
It offers using gas diffusion layers as a kind of individual component in PEMFC.It is provided with fuel flow channel on the anode plate of PEMFC, the combustion
Stream road be fuel (hydrogen or methanol etc. are at normal temperatures and pressures with energy-containing compound existing for gas or liquid form) flowing and
The place of transmission, fuel are transmitted to anode catalyst via it.It is provided with oxidant flow channel on the cathode plate of PEMFC, the oxygen
Agent runner is the place of oxidant (being usually oxygen or air) flowing and transmission, and oxidant reaches cathode catalysis via it
Agent.By means of the fuel flow channel and oxidant flow channel, fuel and oxidant can be continuously transported to fuel cell
It is interior to allow fuel cell continuously to export electric energy.
The structure of alkaline fuel cell (AFC) is similar with Proton Exchange Membrane Fuel Cells, and the main distinction is electrolyte difference,
And fuel flow channel is arranged on its cathode plate, and oxidant flow channel is arranged on its anode plate.It, usually will combustion in order to avoid obscuring
Expect the pole plate for being provided with fuel flow channel of battery, no matter it is cathode plate or anode plate, fuel flow field plate is referred to as, by fuel
The pole plate for being provided with oxidant flow channel of battery, no matter it is cathode plate or anode plate, is referred to as oxidant stream field plate.
In order to improve total generated output of fuel cell, multiple cells in series are usually formed into a combustion together
Expect battery stack (Fuel Cell Stack).In the fuel cell pile, other than outermost two monocells,
The oxidant stream field plate of the fuel flow field plate of monocell inside pile and monocell adjacent thereto is close together.Such as
The fuel flow field plate sticked together and oxidant stream field plate are fixed together and form an individual component and then may be used by fruit
To simplify the structure of fuel cell pile and improve fuel cell pile reliability of operation, and this is by fuel flow field plate and oxygen
The individual component that agent flow-field plate is combined and formed is referred to as bipolar plates (bipolar plate).
Bipolar plates are one of the critical components in fuel cell pile, and support membrane electrode is played in fuel cell pile
The multiple functions such as component, distribution reaction gas, transmission electric current, conduction heat and discharge reaction product water.In existing technology water
Under the conditions of flat, the manufacturing cost of bipolar plates accounts for the total half of manufacturing cost or so of entire fuel cell pile.
It is that (length and width is much larger than thickness for typical plate to constitute the fuel flow field plate of bipolar plates and oxidant stream field plate
Degree), every fuel flow field plate there are two back to face, include that reference plane and fuel flow channel (are referred to as herein on one of face
For the first face), include reference plane and the reference plane and oxidant stream field plate phase in fuel cell pile on another face
Contact (referred to herein as the second face).Every oxidant stream field plate also there are two back to face, include base on one of face
Quasi- face and oxidant flow channel (referred to herein as third face) include reference plane and in fuel cell pile on another face
The reference plane is in contact (referred to herein as fourth face) with fuel flow field plate.Reference plane described herein refers to the fuel flow field
Privileged site on plate or on oxidant stream field plate, if using the length direction of the bipolar plates as X-axis, with the bipolar plates
Width direction is Y-axis, using the thickness direction of the bipolar plates as Z axis, then on the fuel flow field plate and oxidant stream field plate
Reference plane and X-axis and the Y-axis plane constituted are parallel and vertical with Z axis, the benchmark in reference plane and the second face on the first face
The distance between face is equal to the thickness of fuel flow field plate, the distance between the reference plane in reference plane and fourth face on third face
Equal to the thickness of oxidant stream field plate.And the fuel flow channel, oxidant flow channel, coolant flow passages are then relative on each face
The groove that is formed in Z-direction of reference plane.When assembling bipolar plates by the second face of fuel flow field plate and oxidant stream field plate
Fourth face be close together and two plates be fixedly connected to (welding, bonding or other connection methods).
In fuel cell pile, the chemical energy entrained by fuel is largely converted into electric energy, but also has a certain proportion of
Chemical energy can be transformed into thermal energy, therefore for the larger fuel cell pile of generated output, and heating power is also very big, this
The problem of cooling of kind fuel cell pile just can not be ignored as one, if intensity of cooling not enough may result in fuel cell
The constant temperature of pile rises, and then fuel cell pile is caused to be burned out.In order to ensure that fuel cell pile is opposite at one
It persistently generates electricity under stationary temperature, it is necessary to coolant is imported in pile to strengthen the cooling to pile.In fuel flow field plate
The second face on and/or the fourth face of oxidant stream field plate on setting coolant flow passages, import coolant in bipolar plates interlayer
It takes the thermal energy that reaction generates out of fuel cell pile and is currently widely used way.
For the larger fuel cell pile of this generated output, since it is desired that coolant is arranged in its bipolar plates
Runner, so usually by its bipolar plate design at the structure of " three into three go out ", i.e.,：In the one side of bipolar plates, fuel flow channel is set,
Another side be arranged oxidant flow channel, centre setting coolant flow passages, and the edge of bipolar plates be arranged fuel inlet passageway,
Fuel outlet passage, oxidant inlet channel, oxidant outlet channel, coolant inlet channel, coolant outlet channel (have
Above-mentioned each channel is known as manifold by document).
On the other hand, since it is desired that transmission electric current, bipolar plates must make of conductive material.Currently used for making bipolar plates
Material mainly have three classes：Graphite material, composite material and metal material.Graphite bi-polar plate well conducting, corrosion resistance are strong,
But because the brittleness of graphite material is larger, mechanical performance is poor, so the cost of manufacture of graphite bi-polar plate is higher.Composite material is double
Pole plate is prepared using graphite powder and resin as primary raw material, by modes such as moldings, and cost of manufacture is relatively low, but exists conductive
The problems such as property is not high, air-tightness is bad.It is struck out with sheet metal (titanium plate, stainless steel plate or aluminium sheet of 0.1~0.2mm etc.)
Shape, using welding, preservative treatment and etc. and manufactured bipolar plates have high intensity and conduction, heat conductivility, and make
It causes relatively cheap, is the main stream approach of currently manufactured bipolar plates.
There are two values for the bipolar plates with " three into three go out " structure made of the method for parallel computing
It must pay attention to：One, fuel flow field plate and oxidant stream field plate are corrugated, that is,：Coolant flow passages are in fuel flow channel or oxygen
It takes advantage of a situation to be formed while the formation of agent runner, if using the length direction of a pole plate as X-axis, with the width direction of the pole plate
For Y-axis, using the thickness direction of the pole plate as Z axis, then for a specified point (i.e. specific X axis coordinate and Y on the pole plate
Point corresponding to axial coordinate) for, if it on the basis of the first face face so it in the second face be the bottom of coolant flow passages
Portion, if it in the first face be fuel flow channel bottom so it in the second face be reference plane, if it is base in third face
Quasi- face so it in fourth face be coolant flow passages bottom, if it in third face be oxidant flow channel bottom so it
It is reference plane in fourth face；Two, there is cooling on the second face of fuel flow field plate and on the fourth face of oxidant stream field plate
Agent runner, moreover, the coolant flow when assembling bipolar plates other than some privileged sites on the second face of fuel flow field plate
Coolant flow passages on the fourth face of road and oxidant stream field plate to just snapping together, (i.e. in X-axis and Y-axis composition put down by the two
Projection overlapping in face) and constitute the complete coolant flow passages (coolant on the second face of fuel flow field plate under normal circumstances
Coolant flow passages on the fourth face of runner and oxidant stream field plate are the half of coolant flow passages).
The two above features cause a problem：Fuel inlet passageway, each fuel flow channel in fuel cell pile
Necessarily being formed a confined space with fuel outlet passage, (fuel is let out to avoid fuel leakage and the mixing of fuel and oxidant
The mixing of leakage, fuel and oxidant is all dangerous, is possible to that catching fire can be caused even under the action of electrode catalyst
Explosion), so must completely cut off between each fuel flow channel and coolant entrance channel, coolant outlet channel, correspondingly, it is located at
The fuel flow channel back side (the second face), the coolant flow passages between two fuel flow channels are naturally also just logical with coolant entrance
Road and the isolation of coolant outlet channel are come；Unless specific measure is taken to lead to these coolant flow passages with coolant entrance
Road, the perforation of coolant outlet channel, otherwise these coolant flow passages will form enclosure space one by one, and coolant can not flow into
And outflow.Therefore, when making the bipolar plates with " three into three go out " structure with the method for parallel computing, how will
Cooling of each coolant flow passages with coolant entrance channel and the perforation of coolant outlet channel for raising fuel cell pile
Intensity, the temperature control system for improving fuel cell pile are of great significance.However, the research in relation to this problem is also so far
Seldom.
In addition, when making the bipolar plates with " three into three go out " structure with the method for parallel computing, it is existing
Design scheme there are also problems in terms of the layout in each channel.According to existing design scheme, coolant entrance channel and cold
But agent exit passageway is respectively set at the centre position at the both ends of bipolar plates.Since coolant is a kind of fluid, in its flowing
The path of flow resistance minimum necessarily has maximum flow in the process, therefore, when coolant flows in bipolar plates interlayer
The intensity of cooling of the middle section of bipolar plates will be significantly higher than that both sides.The both sides of bipolar plates account for about the three of the bipolar plates gross area and divide
Two region belong to for coolant and " blind alley " region thus cannot be adequately cooled.
Invention content
It is bipolar with " three into three go out " structure the present invention is directed to be made in the method for solution parallel computing
Existing above-mentioned problems when plate, ensure the cooling effect of fuel cell pile to the maximum extent, and reduce the face of bipolar plates
Product and weight, to improve the power density of fuel cell pile；At the same time, fuel flow field plate and oxidant stream field plate are realized
Geometry having the same, to reduce the manufacturing cost of bipolar plates.
To achieve the above object, the present invention takes following technical scheme：
A kind of bipolar plates with coolant flow passages, it includes fuel flow field plate and oxidant stream field plate；The fuel flow field
Plate, oxidant stream field plate and the bipolar plates are plate, and length and width is more than ten times of its thickness；The fuel flow field plate has
Have the first face and the second face, there is fuel flow channel and the first reference plane on first face, have on second face first flow and
Second reference plane；The oxidant stream field plate has third face and fourth face, has oxidant flow channel and third base on the third face
Quasi- face has second flow channel and the 4th reference plane on the fourth face；Second face of the fuel flow field plate and oxidant stream field plate
Fourth face fits together and is assembled into the bipolar plates；First reference plane, the second reference plane, third reference plane and the 4th benchmark
Face is the back side of the bottom of first flow, fuel flow channel, second flow channel and oxidant flow channel respectively, the fuel flow channel, first-class
Road, oxidant flow channel and second flow channel are relative to the first reference plane, the second reference plane, third reference plane and the 4th benchmark respectively
The groove that face is formed on the thickness direction of the bipolar plates；There are six thoroughly for setting on the fuel flow field plate and oxidant stream field plate
Hole, respectively fuel inlet channel, fuel outlet passage, oxidant inlet channel, oxidant outlet channel, coolant entrance are logical
Road and coolant outlet channel；
Have in the bipolar plates to positive area and at least two dislocation areas；This in positive area, the second benchmark on the second face
The 4th reference plane on face and fourth face contacts with each other；Both included the second reference plane in the dislocation area or includes the 4th benchmark
Face, and the second reference plane and the 4th reference plane are not in contact in the dislocation area；
Coolant entrance channel with one dislocation area in first flow or second flow channel penetrate through, coolant outlet channel with
First flow in another dislocation area or second flow channel perforation；The position in the coolant entrance channel meets：Coolant from this
Flow direction when coolant entrance channel flows into first flow or second flow channel is flowed into fuel from the fuel inlet channel should
Flow direction when fuel flow channel is vertical or near vertical, and the acute angle that both direction is constituted is more than 45 °；The coolant outlet is logical
The position in road meets：Flow direction when coolant flows into the coolant outlet channel from first flow or second flow channel and fuel
Flow direction when flowing into fuel outlet passage from fuel flow channel is vertical or near vertical, and the acute angle that both direction is constituted is more than
45°。
Further, one in the dislocation area be by expand part first flow on the fuel flow field plate and with
It is adjacent, belong to the first spacing of the first flow in positive area and formed, first spacing be more than the oxidant stream field plate
On second flow channel in the dislocation area and spacing that is adjacent thereto, belonging to second flow channel to positive area；In the dislocation area
The other is by expand part second flow channel on the oxidant stream field plate and it is adjacent thereto, belong to second to positive area
Second spacing in road and formed, which is more than on the fuel flow field plate in the first flow in the dislocation area and adjacent thereto
, the spacing for belonging to first flow to positive area.
Further, the fuel flow channel, oxidant flow channel, first flow, second flow channel are S-shaped or snakelike.
A kind of bipolar plates with coolant flow passages, it includes fuel flow field plate and oxidant stream field plate；The fuel flow field
Plate, oxidant stream field plate and the bipolar plates are plate, and length and width is more than ten times of its thickness；The fuel flow field plate has
Have the first face and the second face, there is fuel flow channel and the first reference plane on first face, have on second face first flow and
Second reference plane；The oxidant stream field plate has third face and fourth face, has oxidant flow channel and third base on the third face
Quasi- face has second flow channel and the 4th reference plane on the fourth face；Second face of the fuel flow field plate and oxidant stream field plate
Fourth face fits together and is assembled into the bipolar plates；First reference plane, the second reference plane, third reference plane and the 4th benchmark
Face is the back side of the bottom of first flow, fuel flow channel, second flow channel and oxidant flow channel respectively, the fuel flow channel, first-class
Road, oxidant flow channel and second flow channel are relative to the first reference plane, the second reference plane, third reference plane and the 4th benchmark respectively
The groove that face is formed on the thickness direction of the bipolar plates；There are six thoroughly for setting on the fuel flow field plate and oxidant stream field plate
Hole, respectively fuel inlet channel, fuel outlet passage, oxidant inlet channel, oxidant outlet channel, coolant entrance are logical
Road and coolant outlet channel；
Have in the bipolar plates to positive area and at least two dislocation areas；This is to including first flow, the second base in positive area
Quasi- face, second flow channel, the 4th reference plane, and the second reference plane and the 4th reference plane contact with each other；Include in the dislocation area
First flow, the second reference plane, second flow channel, the 4th reference plane, and the second reference plane and the 4th reference plane are not in contact；Institute
The two dislocation areas stated are separated by described to just distinguishing；It is including coolant energy in the fuel cell pile of the bipolar plates
It is enough to flow into the first of one of dislocation area without first flow and second flow channel to positive area from coolant entrance channel
Runner or second flow channel, and the first flow in the area that can misplace from another or second flow channel are without to the first-class of positive area
Road and second flow channel and flow into coolant outlet channel；
The first flow, fuel flow channel, second flow channel and oxidant flow channel include longitudinal sections and traversing section；Fluid
(fuel, oxidant or coolant) flowing in the longitudinal sections with traversing section is vertical or near vertical；Fluid (fuel, oxygen
Agent or coolant) flow to parallel or close to parallel in different longitudinal sections, constitute the overall length of the longitudinal sections of first flow
Degree is greater than or equal to the total length for the traversing section for constituting first flow, and the total length for constituting the longitudinal sections of second flow channel is more than or waits
In the total length for the traversing section for constituting second flow channel；
First flow in two dislocation areas belongs to the longitudinal sections of the first flow；Two dislocation
Second flow channel in area belongs to constitute the longitudinal sections of the second flow channel；The fuel inlet channel, fuel outlet passage with
The traversing section of fuel flow channel connects, the oxidant inlet channel, oxidant outlet channel and oxidant flow channel traversing section phase
It connects.
Further, in two dislocation areas, one of dislocation area is deposited with the intersection to positive area
It is more than the position of the second spacing in the first spacing, there are the second spacing to be more than with the intersection to positive area in another dislocation area
The position of first spacing；First spacing refers to belonging to the dislocation first flow in area and adjacent thereto on fuel flow field plate
, belong to the distance between first flow to positive area；Second spacing refers to belonging to dislocation on oxidant stream field plate
The second flow channel in area and it is adjacent thereto, belong to the distance between second flow channel to positive area.
Further, the coolant entrance channel and coolant outlet channel are connected with multiple dislocation areas；With institute
It states multiple dislocation areas that coolant entrance channel is connected and forms the first perforation area and the second perforation area, first perforation area has
Multiple dislocation areas, these dislocation areas are separated by upper supporting table, and also there are multiple dislocation areas in second perforation area, these dislocation areas
It is separated by lower supporting table；The multiple dislocation areas being connected with the coolant outlet channel form third perforation area and the 4th and pass through
There are multiple dislocation areas in logical area, third perforation area, these dislocation areas are separated by upper supporting table, the 4th perforation Qu Yeyou
Multiple dislocation areas, these dislocation areas are separated by lower supporting table；Upper supporting table described herein refers to blocking first flow and shape
At the second reference plane, lower supporting table described herein refers to blocking second flow channel and the 4th reference plane that is formed.
Further, the fuel flow field plate and oxidant stream field plate geometry having the same.
Further, it is both provided with positioning device on the fuel flow field plate and oxidant stream field plate, by the fuel
It, can be by fuel flow field plate and oxidant stream by means of the positioning device when flow-field plate and oxidant flow field board group dress up bipolar plates
Field plate fits together according to scheduled position；It is provided with described in seal groove and fires on the fuel flow field plate and oxidant stream field plate
It is provided with seal groove on stream field plate and oxidant stream field plate.
Further, the fuel flow field plate and oxidant stream field plate are the metal or alloy for being less than 0.2 millimeter with thickness
Thin plate makes forming by the method for pressure processing.
The beneficial effects of the invention are as follows：The bipolar plates with coolant flow passages of the present invention, are not increasing bipolar plate thickness
Under the premise of can make coolant entrance channel, coolant outlet channel and coolant flow passages completely through, fuel cell electricity
Coolant can flow through total overall reaction area when heap works, so as to significantly improve the cooling effect of fuel cell pile.Meanwhile
The raw material of manufacture bipolar plates, the area of reduction bipolar plates and weight can not only be saved, to improve fuel cell pile
Power density, but also it is successfully realized fuel flow field plate and oxidant stream field plate with identical geometry, favorably
In the manufacturing cost for reducing bipolar plates.
Description of the drawings
Fig. 1 is the structural schematic diagram of the oxidant stream field plate of bipolar plates described in embodiment 1.
Fig. 2 is the structural schematic diagram of the fuel flow field plate of bipolar plates described in embodiment 1.
Fig. 3 is bipolar plates described in embodiment 1 in the sectional view with the position corresponding to the directions A-A in Fig. 2.
Fig. 4 is bipolar plates described in embodiment 1 in the sectional view with the position corresponding to the directions B-B in Fig. 2.
Fig. 5 is bipolar plates described in embodiment 1 in the sectional view with the position corresponding to the directions C-C in Fig. 2.
Fig. 6 is that the structure of the fuel flow field plate and oxidant stream field plate with same geometry described in embodiment 2 is shown
It is intended to.
Fig. 7 is that fuel flow field plate with same geometry described in embodiment 2 and oxidant flow field board group are mounted in one
The structural schematic diagram risen.
Fig. 8 is bipolar plates described in embodiment 2 in the sectional view with the position corresponding to the directions A1-A1 in Fig. 6.
Fig. 9 is bipolar plates described in embodiment 2 in the sectional view with the position corresponding to the directions A2-A2 in Fig. 6.
Figure 10 is bipolar plates described in embodiment 2 in the sectional view with the position corresponding to the directions B1-B1 in Fig. 6.
Figure 11 is bipolar plates described in embodiment 2 in the sectional view with the position corresponding to the directions B2-B2 in Fig. 6.
Figure 12 is bipolar plates described in embodiment 2 in the sectional view with the position corresponding to the directions C-C in Fig. 6.
Figure 13 is that the structure of the fuel flow field plate with same geometry and oxidant stream field plate described in embodiment 3 is shown
It is intended to.
Figure 14 is that the fuel flow field plate described in embodiment 3 with same geometry and oxidant flow field board group are mounted in one
The structural schematic diagram risen.
Specific implementation mode
The invention will be further described in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As Figure 1-Figure 5, it is a kind of embodiment 1 of the bipolar plates with coolant flow passages provided by the invention, it
Including fuel flow field plate 1 and oxidant stream field plate 2.The fuel flow field plate 1, oxidant stream field plate 2 and the bipolar plates are plate
Shape, length and width are much larger than thickness.The fuel flow field plate 1 and oxidant stream field plate 2 are the identical metallic plate of shape, such as
Rectangle, it is stamping with the stainless steel plate or titanium alloy sheet that thickness is 0.1~0.2mm.
The top and bottom of the fuel flow field plate 1 are respectively the first face 11 and the second face 12.First face 11 is formed with combustion
The first reference plane 112 between stream road 111 and consecutive fuel runner 111 is formed with 121 He of first flow in second face 12
The second reference plane 122 between adjacent first flow 121.The bottom surface and top surface of the oxidant stream field plate 2 are respectively third face 21
With fourth face 22.The third face 21 is formed with the third reference plane 212 between oxidant flow channel 211 and adjacent oxidant flow channel,
It is formed with the 4th reference plane 222 between second flow channel 221 and adjacent second flow channel 221 in the fourth face 22.With the bipolar plates
Length direction be X-axis, using the width direction of the bipolar plates as Y-axis, using the thickness direction of the bipolar plates as Z axis, first base
Quasi- face 112, the second reference plane 122, third reference plane 212, the 4th reference plane 222 are parallel with the plane that X-axis and Y-axis are constituted simultaneously
Vertical with Z axis, the fuel flow channel 111, oxidant flow channel 211, first flow 121 and second flow channel 221 are relative to corresponding
First reference plane 112, the second reference plane 122, third reference plane 212, the 4th reference plane 222 shape on bipolar plate thickness direction
At groove.
1 one end of fuel flow field plate is equipped with fuel inlet channel 31, oxidant inlet channel 41, and the other end goes out equipped with fuel
Mouth channel 32 and oxidant outlet channel 42.The fuel inlet channel 31, fuel outlet passage 32 and the fuel flow channel 111 pass through
It is logical.2 one end of oxidant stream field plate is equipped with oxidant inlet channel 41, fuel inlet channel 31, and the other end goes out equipped with oxidant
Mouth channel 42 and fuel outlet passage 32, the oxidant inlet channel 41, oxidant outlet channel 42 and the oxidant flow channel 211
Perforation.
The fuel flow field plate 1 and the overlapping of oxidant stream field plate 2 are fixed together, and second face 12 and 22 phase of fourth face
Neighbour makes the first flow 121 and second flow channel 221 correspond to.It is provided with bipolar plates on fuel flow field plate 1 and oxidant stream field plate 2
Assembling dedicated positioning device is assembled when fuel flow field plate and oxidant flow field board group are dressed up bipolar plates by means of bipolar plates
Dedicated positioning device can fit together fuel flow field plate and oxidant stream field plate according to the position of setting, fuel flow field plate
On be provided with seal groove, in assembling fuel cell pile, can insert specific sealing material in seal groove and prevent fuel
Leakage.The first flow 121 of the bipolar plates and 221 corresponding region of second flow channel have to the dislocation of positive area D and at least two area
E；This is in positive area D, and the first flow 121 and the second flow channel 221 are to just, throwing of the two in the plane that X-axis and Y-axis are constituted
The center line overlap of shadow, formed multiple autonomous closures to positive coolant flow passages D1；The first flow 121 and second flow channel 221
Section be in isosceles trapezoid, make this to the sections positive coolant flow passages D1 be in regular hexagon.In dislocation area E, the first flow 121
It is interlaced with the second flow channel 221, it the centerline parallel of projection of the two in the plane that X-axis and Y-axis are constituted and is not overlapped,
Second reference plane 122 and the 4th reference plane 222 also misplace, and the section for forming a connection is in wavy dislocation coolant flow passages
E1；Dislocation coolant flow passages E1 is respectively connected to positive coolant flow passages D1 in the position to cross with each.
Dislocation coolant flow passages E1 in one of dislocation area E is penetrated through with coolant entrance channel 51, another dislocation
Dislocation coolant flow passages E1 in area E is penetrated through with coolant outlet channel 52.It is cold that the coolant entrance channel 51 is located at the dislocation
But the sides agent runner E1, with fuel inlet channel 31, fuel outlet passage 32 not on same one side of the bipolar plates, coolant from
Flow direction and fuel when the coolant entrance channel 51 flows into dislocation coolant flow passages E1 are from the fuel inlet channel 31
Flow direction when flowing into the fuel flow channel 111 is vertical or near vertical.The coolant outlet channel 52 is located at dislocation cooling
The sides agent runner E1, with fuel inlet channel 31, fuel outlet passage 32 not on same one side of the bipolar plates, coolant from this
Flow direction when dislocation coolant flow passages E1 flows into the coolant outlet channel 52 flows into fuel with fuel from fuel flow channel 111
Flow direction when exit passageway 32 is vertical or near vertical.
Dislocation area E is two, is divided into following three kinds of situations：
A. one in the dislocation area E is located at the fuel flow field plate 1, close to the fuel inlet channel 31, passes through
Expand the part first flow 121 on the fuel flow field plate 1 and it is adjacent thereto, belong to the first flow 121 of positive area D
One spacing and formed, which is more than the second flow channel 221 and therewith in dislocation area E on the oxidant stream field plate 2
Spacing that is adjacent, belonging to second flow channel 221 to positive area D；Another in the dislocation area E is located at the oxidant flow field
Plate 1, close to the oxidant inlet channel 41, by expanding part second flow channel 221 on the oxidant stream field plate 2 and therewith
It is adjacent, belong to the second spacing of the second flow channel 221 of positive area D and formed, which is more than on the fuel flow field plate 1
The first flow 121 of E and spacing that is adjacent thereto, belonging to first flow 121 to positive area D in the dislocation area.At this point, the combustion
Stream field plate 1 is identical with 2 structure of oxidant stream field plate, it is possible to reduce die sinking quantity reduces production cost.
B. the dislocation area E is respectively positioned on the fuel flow field plate 1, goes out respectively close to the fuel inlet channel 31 and fuel
Mouth channel 32；Respectively by expand part first flow 121 on the fuel flow field plate 1 and it is adjacent thereto, belong to positive area D
First flow 121 the first spacing and formed, first spacing be more than the oxidant stream field plate 2 on dislocation area E's
Second flow channel 221 and spacing that is adjacent thereto, belonging to second flow channel 221 to positive area D.
C. the dislocation area E is respectively positioned on the oxidant stream field plate 2, respectively close to the oxidant inlet channel 41 and oxygen
Agent exit passageway 42；Respectively by expanding part second flow channel 221 and adjacent thereto, category on the oxidant stream field plate 2
It is formed in the first spacing of the second flow channel 221 to positive area D, which is more than on the fuel flow field plate 1 in the mistake
The first flow 121 of position area E and spacing that is adjacent thereto, belonging to first flow 121 to positive area D.
It is that the overlapping of multiple bipolar plates is fixed since bipolar plates are in use, therefore, in the coolant entrance channel 51 and cold
But the position of agent exit passageway 52 is easy to happen crimp, and blocking channel, therefore, the present invention is in the coolant entrance channel
There are several row's supporting tables 6 with coolant outlet channel.Each supporting table 6 is by blocking on the second face 12 or on fourth face 22
It is formed positioned at the part dislocation coolant flow passages E1 of dislocation area E, when assembling bipolar plates in the supporting table 6 and fourth face
Or the second reference plane on face is in contact and plays supporting function.
Structure of the invention stablize, die sinking quantity it is few, manufacturing cost is low, coolant can the overwhelming majority (be more than three/
Two) it is flowed at fuel flow channel or oxidant flow channel, good cooling results improve the safety that bipolar plates use.
But the program can cause to see figure 1 and figure 2 there are two redundant areas in bipolar plates.The two redundant areas are not
With any function, increase the area and weight of bipolar plates in rain, so as to cause assemble the fuel cell pile come volume,
Weight increases, and power density reduces.
Fuel flow field plate and oxidant stream field plate are designed to geometry having the same, can undoubtedly improve bipolar plates
The versatility of part in manufacturing process, to reduce the manufacturing cost of bipolar plates.And the snake for generally using in the world at present
For shape runner, fuel flow field plate and oxidant stream field plate are designed to that geometry having the same has the difficulty of bigger,
The example of fuel flow field plate and oxidant stream field plate geometry having the same is realized using serpentine flow path still
It is rare.
As shown in Fig. 6-Figure 12, the bipolar plates embodiment 2 of coolant flow passages is carried for the present invention, it includes fuel flow field
Plate 1 ' and oxidant stream field plate 2 '.The fuel flow field plate 1 ', oxidant stream field plate 2 ' and the bipolar plates are plate, such as just
Rectangular or rectangle, length and width are more than ten times of its thickness.The fuel flow field plate has the first face 11 ' and the second face
12 ', there is fuel flow channel 111 ' and the first reference plane 112 ', with first flow on second face 12 ' on first face 11 '
121 ' and second reference plane 122 '.The oxidant stream field plate 2 ' has third face 21 ' and fourth face 22 ', has on the third face 21 '
There are oxidant flow channel 211 ' and third reference plane 212 ', there is second flow channel 221 ' and the 4th reference plane on the fourth face 22 '
222’.Second face 12 ' of the fuel flow field plate 1 ' and the fourth face 22 ' of oxidant stream field plate 2 ' fit together and are assembled into this
Bipolar plates.First reference plane 112 ', the second reference plane 122 ', third reference plane 212 ' and the 4th reference plane 222 ' are respectively
The back side of one runner 121 ', fuel flow channel 111 ', second flow channel 221 ' and the bottom of oxidant flow channel 211 ', the fuel flow channel
111 ', first flow 121 ', oxidant flow channel 211 ' and second flow channel 211 ' are relative to the first reference plane 112 ', second respectively
The groove that reference plane 122 ', third reference plane 212 ' and the 4th reference plane 222 ' are formed on the thickness direction of the bipolar plates.It should
Six open-works, respectively fuel inlet channel 31 ', fuel outlet passage are set on fuel flow field plate 1 ' and oxidant stream field plate 2 '
32 ', oxidant inlet channel 41 ', oxidant outlet channel 42 ', coolant entrance channel 51 ' and coolant outlet channel 52 '.
Fuel flow channel 111 ' can be flowed into from fuel inlet channel 31 ' by participating in the fuel of electrochemical reaction, participate in the oxygen of electrochemical reaction
Agent can be from 41 ' inleting oxidant runner 211 ' of oxidant inlet channel.
Have in the bipolar plates to the dislocation of positive area D ' and at least two area E '.This is to including first flow in positive area D '
121 ', second reference plane 122 ', second flow channel 221 ', the 4th reference plane 222 ', and the second reference plane 122 ' and the 4th benchmark
Face 222 ' contacts with each other.Include first flow 121 ', the second reference plane 122 ', second flow channel 221 ', the in dislocation area E '
Four reference planes 222 ', and the second reference plane 122 ' and the 4th reference plane 222 ' are not in contact.This two dislocation area E ' are right by this
Positive area D ' is separated.In including the fuel cell pile of the bipolar plates, coolant can from coolant entrance channel without
The first flow in the areas Guo Duizheng and second flow channel and the first flow or second flow channel for flowing into one of dislocation area, and can
From the first flow or second flow channel in another dislocation area cooling is flowed into without first flow and second flow channel to positive area
Agent exit passageway.
The first flow, fuel flow channel, second flow channel and oxidant flow channel include longitudinal sections Z and traversing section H.Fluid
(fuel, oxidant or coolant) flowing in longitudinal sections Z and traversing section H is vertical or near vertical.Fluid (fuel, oxygen
Agent or coolant) flow to parallel or close to parallel in different longitudinal sections Z, constitute the total of the longitudinal sections Z of first flow
Length is greater than or equal to the total length for the traversing section H for constituting first flow, and the total length for constituting the longitudinal sections Z of second flow channel is more than
Or the total length equal to the traversing section H for constituting second flow channel.
First flow in two dislocation area E ' belongs to the longitudinal sections Z of the first flow.This two dislocation areas
Second flow channel in E ' belongs to constitute the longitudinal sections Z of the second flow channel.The fuel inlet channel, fuel outlet passage and fuel
The traversing section H of runner connects, and the oxidant inlet channel, oxidant outlet channel connect with the traversing section H of oxidant flow channel.
It misplaces at this two in area, one of dislocation area and the intersection to positive area have the first spacing more than the
There is position of second spacing more than the first spacing with the intersection to positive area in the position of two spacing, another dislocation area.Institute
The first spacing stated refer to belong on fuel flow field plate dislocation area first flow and it is adjacent thereto, belong to positive area the
The distance between one runner.Second spacing refers to belonging to the second flow channel and therewith in dislocation area on oxidant stream field plate
It is adjacent, belong to the distance between second flow channel to positive area.
The coolant entrance channel 51 ' and coolant outlet channel 52 ' are connected with multiple dislocation areas.Fuel flow field plate
1 ' and oxidant stream field plate 2 ' when being combined composition bipolar plates, multiple dislocation for being connected with the coolant entrance channel 51 '
Area forms the first perforation area E1 ' and the second perforation area E2 ', and first perforation area E1 ' has multiple dislocation areas, these dislocation Qu Beishang
Supporting table separates, and second perforation area E2 ' also has multiple dislocation areas, these dislocation areas are separated by lower supporting table.It is cold with this
But multiple dislocation areas that agent exit passageway 52 ' is connected form the third perforation area E4 ' of perforation area E3 ' and the 4th, third perforation
Area E3 ' has multiple dislocation areas, these dislocation areas are separated by upper supporting table, and the 4th perforation area E4 ' also has multiple dislocation areas, this
A little dislocation areas are separated by lower supporting table.Upper supporting table described herein refers to the second benchmark for blocking first flow and being formed
Face, lower supporting table described herein refer to the 4th reference plane for blocking second flow channel and being formed.
As shown in Figure 13-Figure 14, the bipolar plates embodiment 3 of coolant flow passages is carried for the present invention, it is big with embodiment 1
It causes identical, differs only in, the coolant entrance channel and coolant outlet channel are connected with multiple dislocation areas.The fuel stream
When field plate 1 and oxidant stream field plate 2 are combined composition bipolar plates, multiple dislocation for being connected with the coolant entrance channel 51
Area forms the first perforation area E1 ' and the second perforation area E2 ', and first perforation area E1 ' has multiple dislocation areas, these dislocation Qu Beishang
Supporting table separates, and second perforation area E2 ' also has multiple dislocation areas, these dislocation areas are separated by lower supporting table.It is cold with this
But multiple dislocation areas that agent exit passageway 52 is connected form the third perforation area E4 ' of perforation area E3 ' and the 4th, which penetrates through area
E3 ' has multiple dislocation areas, these dislocation areas are separated by upper supporting table, and the 4th perforation area E4 ' also has multiple dislocation areas, these
Dislocation area is separated by lower supporting table.Upper supporting table described herein refers to the second reference plane for blocking first flow and being formed,
Lower supporting table described herein refers to the 4th reference plane for blocking second flow channel and being formed.
In order to save die sinking cost, the fuel flow field plate of the invention and oxidant stream field plate geometric form having the same
Shape, the fuel flow field plate and oxidant stream field plate are that the metal or alloy thin plate with thickness less than 0.2 millimeter passes through pressure processing
Method make forming.
In addition, be both provided with positioning device on the fuel flow field plate and oxidant stream field plate, by the fuel flow field plate and
When oxidant flow field board group dresses up bipolar plates, by means of the positioning device can by fuel flow field plate and oxidant stream field plate according to
Scheduled position fits together.The seal groove fuel flow field plate and oxygen are provided on the fuel flow field plate and oxidant stream field plate
It is provided with seal groove in agent flow-field plate.
Above-described embodiment is merely exemplary to illustrate the principle of the present invention and its effect, and is not intended to limit the present invention.The present invention
It can be improved under the premise of without prejudice to overall thought there are many more aspect, any person skilled in the art all can be not
Under the spirit and scope for violating the present invention, carry out modifications and changes to above-described embodiment.Therefore, have in technical field such as
All equivalent modifications or change that usually intellectual is completed without departing from the spirit and technical ideas disclosed in the present invention,
It should be covered by the claim of the present invention.
Claims (9)
1. a kind of bipolar plates with coolant flow passages, which is characterized in that it includes fuel flow field plate and oxidant stream field plate；It should
Fuel flow field plate, oxidant stream field plate and the bipolar plates are plate, and length and width is more than ten times of its thickness；The fuel
Flow-field plate has the first face and the second face, and has fuel flow channel and the first reference plane on first face, has the on second face
One runner and the second reference plane；The oxidant stream field plate has third face and fourth face, has oxidant flow channel on the third face
With third reference plane, there is second flow channel and the 4th reference plane on the fourth face；Second face of the fuel flow field plate and oxidant
The fourth face of flow-field plate fits together and is assembled into the bipolar plates；First reference plane, the second reference plane, third reference plane and
4th reference plane is the back side of the bottom of first flow, fuel flow channel, second flow channel and oxidant flow channel, the The fuel stream respectively
Road, first flow, oxidant flow channel and second flow channel are relative to the first reference plane, the second reference plane, third reference plane respectively
The groove formed on the thickness direction of the bipolar plates with the 4th reference plane；It is arranged on the fuel flow field plate and oxidant stream field plate
There are six open-works, respectively fuel inlet channel, fuel outlet passage, oxidant inlet channel, oxidant outlet channel, cooling
Agent access road and coolant outlet channel；
Have in the bipolar plates to positive area and at least two dislocation areas；This in positive area, the second reference plane on the second face and
The 4th reference plane on fourth face contacts with each other；Both included the second reference plane in the dislocation area or include the 4th reference plane,
And the second reference plane and the 4th reference plane are not in contact in the dislocation area；
Coolant entrance channel with one dislocation area in first flow or second flow channel penetrate through, coolant outlet channel with it is another
First flow in a dislocation area or second flow channel perforation；The position in the coolant entrance channel meets：Coolant is from the cooling
Flow direction when agent access road flows into first flow or second flow channel flows into the fuel with fuel from the fuel inlet channel
Flow direction when runner is vertical or near vertical, and the acute angle that both direction is constituted is more than 45 °；The coolant outlet channel
Position meets：Flow direction when coolant flows into the coolant outlet channel from first flow or second flow channel and fuel are from combustion
Flow direction when stream road inflow fuel outlet passage is vertical or near vertical, and the acute angle that both direction is constituted is more than 45 °.
2. the bipolar plates according to claim 1 with coolant flow passages, it is characterised in that：One in the dislocation area
It is by expanding part first flow on the fuel flow field plate and adjacent thereto, belonging to first flow to positive area first
Spacing and formed, first spacing be more than the oxidant stream field plate on the dislocation area second flow channel and it is adjacent thereto,
Belong to the spacing of the second flow channel to positive area；It is in the dislocation area the other is portion by expanding on the oxidant stream field plate
Point second flow channel and it is adjacent thereto, belong to the second spacing of the second flow channel in positive area and formed, which is more than should
In the first flow in the dislocation area and spacing that is adjacent thereto, belonging to first flow to positive area on fuel flow field plate.
3. the bipolar plates according to claim 1 or 2 with coolant flow passages, it is characterised in that：The fuel flow channel, oxygen
Agent runner, first flow, second flow channel are S-shaped or snakelike.
4. a kind of bipolar plates with coolant flow passages, which is characterized in that it includes fuel flow field plate and oxidant stream field plate；It should
Fuel flow field plate, oxidant stream field plate and the bipolar plates are plate, and length and width is more than ten times of its thickness；The fuel
Flow-field plate has the first face and the second face, and has fuel flow channel and the first reference plane on first face, has the on second face
One runner and the second reference plane；The oxidant stream field plate has third face and fourth face, has oxidant flow channel on the third face
With third reference plane, there is second flow channel and the 4th reference plane on the fourth face；Second face of the fuel flow field plate and oxidant
The fourth face of flow-field plate fits together and is assembled into the bipolar plates；First reference plane, the second reference plane, third reference plane and
4th reference plane is the back side of the bottom of first flow, fuel flow channel, second flow channel and oxidant flow channel, the The fuel stream respectively
Road, first flow, oxidant flow channel and second flow channel are relative to the first reference plane, the second reference plane, third reference plane respectively
The groove formed on the thickness direction of the bipolar plates with the 4th reference plane；It is arranged on the fuel flow field plate and oxidant stream field plate
There are six open-works, respectively fuel inlet channel, fuel outlet passage, oxidant inlet channel, oxidant outlet channel, cooling
Agent access road and coolant outlet channel；
Have in the bipolar plates to positive area and at least two dislocation areas；This to include in positive area first flow, the second reference plane,
Second flow channel, the 4th reference plane, and the second reference plane and the 4th reference plane contact with each other；Include first-class in the dislocation area
Road, the second reference plane, second flow channel, the 4th reference plane, and the second reference plane and the 4th reference plane are not in contact；Described two
A dislocation area is separated by described to just distinguishing；In including the fuel cell pile of the bipolar plates, coolant can be from cold
But agent access road flowed into without first flow and the second flow channel to positive area one of dislocation area first flow or
Second flow channel, and can be from the first flow or second flow channel in another dislocation area without the first flow and the to positive area
Two runners and flow into coolant outlet channel；
The first flow, fuel flow channel, second flow channel and oxidant flow channel include longitudinal sections and traversing section；Fluid is in institute
It is vertical or near vertical with flowing in traversing section to state longitudinal sections；Fluid flowing in different longitudinal sections is parallel or close to flat
Row, the total length for constituting the longitudinal sections of first flow are greater than or equal to the total length for the traversing section for constituting first flow, constitute the
The total length of the longitudinal sections of two runners is greater than or equal to the total length for the traversing section for constituting second flow channel；
First flow in two dislocation areas belongs to the longitudinal sections of the first flow；In two dislocation areas
Second flow channel belong to constitute the longitudinal sections of the second flow channel；The fuel inlet channel, fuel outlet passage and fuel
The traversing section of runner connects, and the oxidant inlet channel, oxidant outlet channel connect with the traversing section of oxidant flow channel.
5. the bipolar plates according to claim 4 with coolant flow passages, it is characterised in that：In two dislocation areas
In the middle, position of one of dislocation area with the intersection to positive area there are the first spacing more than the second spacing, another
Misplacing, there are the positions that the second spacing is more than the first spacing with the intersection to positive area in area；First spacing refer to
Belong on fuel flow field plate dislocation area first flow and it is adjacent thereto, belong to the distance between first flow to positive area；
Second spacing refer to belong on oxidant stream field plate dislocation area second flow channel and it is adjacent thereto, belong to positive area
The distance between second flow channel.
6. the bipolar plates according to any one of claims 1 to 5 with coolant flow passages, it is characterised in that：It is described cold
But agent access road and coolant outlet channel are connected with multiple dislocation areas；It is connected with the coolant entrance channel
Multiple dislocation areas form the first perforation area and the second perforation area, and there are multiple dislocation areas in first perforation area, these dislocation area's quilts
Upper supporting table separates, and also there are multiple dislocation areas in second perforation area, these dislocation areas are separated by lower supporting table；With it is described
Multiple dislocation areas that coolant outlet channel is connected form third perforation area and the 4th perforation area, and the third penetrates through Qu Youduo
A dislocation area, these dislocation areas are separated by upper supporting table, and also there are multiple dislocation areas in the 4th perforation area, these dislocation area's quilts
Lower supporting table separates；Upper supporting table described herein refers to the second reference plane for blocking first flow and being formed, described herein
Lower supporting table refer to blocking second flow channel and the 4th reference plane that is formed.
7. the bipolar plates according to claim 6 with coolant flow passages, it is characterised in that：The fuel flow field plate and oxygen
Agent flow-field plate geometry having the same.
8. the bipolar plates according to claim 1 or 4 with coolant flow passages, which is characterized in that the fuel flow field plate
It is both provided with positioning device on oxidant stream field plate, the fuel flow field plate and oxidant flow field board group are being dressed up into bipolar plates
When, fuel flow field plate and oxidant stream field plate can be fit together according to scheduled position by means of the positioning device；Institute
It states to be provided on fuel flow field plate and oxidant stream field plate on fuel flow field plate described in seal groove and oxidant stream field plate and be provided with
Seal groove.
9. the bipolar plates according to claim 1 or 4 with coolant flow passages, it is characterised in that：The fuel flow field plate
It is method making forming of the metal or alloy thin plate with thickness less than 0.2 millimeter by pressure processing with oxidant stream field plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/231,950 US10756357B2 (en) | 2018-01-09 | 2018-12-25 | Bipolar plate with coolant flow channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017586 | 2018-01-09 | ||
| CN2018100175860 | 2018-01-09 |
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| CN110289431A (en) * | 2019-06-28 | 2019-09-27 | 北京航天石化技术装备工程有限公司 | A kind of fuel cell flow field board of zigzag |
| CN110492126A (en) * | 2019-05-16 | 2019-11-22 | 张国胜 | Bipolar plates and fuel cell pile and electricity generation system comprising the bipolar plates |
| CN111477903A (en) * | 2019-12-10 | 2020-07-31 | 张国胜 | Integral dislocation assembly method of bipolar plate, fuel cell stack comprising bipolar plate and power generation system |
| CN113258094A (en) * | 2021-05-17 | 2021-08-13 | 张国胜 | Bipolar plate with asymmetric flow field, fuel cell stack and power generation system |
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