CN207651598U - Fuel cell - Google Patents
Fuel cell Download PDFInfo
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- CN207651598U CN207651598U CN201721815818.4U CN201721815818U CN207651598U CN 207651598 U CN207651598 U CN 207651598U CN 201721815818 U CN201721815818 U CN 201721815818U CN 207651598 U CN207651598 U CN 207651598U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
Fuel cell provided by the utility model, including：The upper and lower surface of pile, including membrane electrode assembly and bipolar plates, membrane electrode assembly is provided with power generation operation face, and membrane electrode assembly and bipolar plates are arranged to along the direction stacked arrangement perpendicular to power generation operation face；The heat source of heat is provided；And the heat-conductive assembly of membrane electrode assembly is conducted heat to, heat-conductive assembly includes：First heat-conducting piece, along at least side for being set to pile perpendicular to the direction in power generation operation face；Second heat-conducting piece is set between the first heat-conducting piece and bipolar plates, and heat is transmitted by conduction pattern between the first heat-conducting piece；Third heat-conducting piece is set between laminated film electrode assembly and bipolar plates, is transmitted heat by conduction pattern between the second heat-conducting piece and is contacted with the second heat-conducting piece, is transmitted heat by conduction pattern between membrane electrode assembly and is contacted with power generation operation face.It is high, of simple structure and low cost that the fuel cell of the utility model preheats short, rapid heat dissipation, temperature consistency.
Description
Technical field
The utility model is related to a kind of fuel cells, specifically, the utility model is related to one kind carrying heat source and heat conduction
The Proton Exchange Membrane Fuel Cells of part.
Background technology
Proton Exchange Membrane Fuel Cells is utilized the backward reaction principle of electrolysis water, makes as one " chemical electricity generator "
Hydrogen (anode) and oxygen (cathode) under the effect of the catalyst, are produced electricl energy by electrochemical reaction.
The electrochemical reaction of Proton Exchange Membrane Fuel Cells is happened in stack system (hereinafter referred to as " pile "), and pile is matter
The electricity generation system of proton exchange film fuel cell includes the membrane electrode assembly and bipolar plates of stacked arrangement.Every membrane electrode assembly
Upper and lower surface is both provided with power generation operation face.The upper and lower surface of every bipolar plates is both provided with flow field, the flow field and film
Electrode assembly power generation operation face is parallel, for passing through for the gas needed for cathode and anode.Every membrane electrode assembly with thereon
The correspondence surface of the bipolar plates of lower both sides forms a generator unit.
Since membrane electrode assembly only just can effectively generate electricity in limited operating temperature (operation temperature) range,
Membrane electrode assembly is very harsh to temperature requirement, shows following two aspects：
First, when membrane electrode assembly when the temperature is excessively high, irreversible damage can be caused to membrane electrode assembly.Work as membrane electrode
When the temperature of component is too low, the electrochemical reaction rates in membrane electrode assembly are excessively slow, and can not effectively work power generation, and user can not make
With.Therefore it must be heated before, make its heat up as early as possible preheat reach operating temperature lower limit with reduce user etc.
Wait for the time.According to the related of Juhl Andreasen et al. studies have shown that the pile using Electric heating reaches under operating temperature
Required heating preheating time is limited usually at 30-60 minutes or so, so the long stand-by period will serious influence user
Use feeling, the application range of fuel cell.
In addition, the uniformity of membrane electrode assembly operating temperature also has very important shadow to the generating capacity of membrane electrode assembly
It rings.The operating temperature of same membrane electrode assembly different parts should be consistent as possible, the work between the membrane electrode assembly of different layers
Temperature also should be consistent as possible.Only in such generating capacity that could preferably play membrane electrode assembly.
In the prior art, it is bipolar plates to provide the component of operating temperature institute calorific requirement for membrane electrode assembly, and bipolar plates are not
Only need to receive outside heat, these heats rapidly and efficiently be transmitted to membrane electrode assembly, it is also necessary to undertake membrane electrode assembly
The requirement of the various aspects of performance such as required electric conductivity, mechanical strength, corrosion-resistant, gas barrier properties, quality, cost.Due to for film electricity
The component that pole component provides heat assumes responsibility for excessive function, by various conditionalities, it is difficult to meet the need of membrane electrode assembly
It asks, therefore causes fuel cell pile in the prior art and start that overlong time, generating capacity is bad, manufacturing cost is high,
The use feeling for having seriously affected user reduces the existent value of fuel cell, forms the skill for influencing fuel cell development
Art bottleneck.
Utility model content
The purpose of this utility model is to provide a kind of pre-heating temperature elevation time is short, radiating rate is fast, temperature consistency is high, knot
Simple, of low cost, the applied widely fuel cell of structure.
On the one hand, the utility model provides a kind of fuel cell, including：Pile, the pile include at least sheet of membrane
Electrode assembly and at least one bipolar plates, wherein the upper and lower surface of every membrane electrode assembly is both provided with power generation operation
Face, at least a piece of membrane electrode assembly and at least one bipolar plates are arranged to along the side perpendicular to the power generation operation face
To stacked arrangement；Heat source, for providing heat；And for conducting the heat from the heat source at least sheet of membrane
The heat-conductive assembly of electrode assembly, wherein the heat-conductive assembly includes：First heat-conducting piece, along perpendicular to the power generation operation face
Direction is set at least side of the pile；Second heat-conducting piece is set to first heat-conducting piece and described at least one pair
Between pole plate, heat is transmitted by conduction pattern between first heat-conducting piece；And third heat-conducting piece, it is set to stacking row
Between the membrane electrode assembly and bipolar plates of row, transmitted by conduction pattern between the third heat-conducting piece and second heat-conducting piece
Heat is simultaneously in contact with second heat-conducting piece, is passed by conduction pattern between the third heat-conducting piece and the membrane electrode assembly
It passs heat and is in contact with the power generation operation face of the membrane electrode assembly.
On the other hand, the utility model additionally provides a kind of fuel cell, including：Pile, the pile include sheet of membrane
Electrode assembly and a pair of of unipolar plate, wherein the upper and lower surface of membrane electrode assembly is both provided with power generation operation face, and described one
To unipolar plate along upside, the downside for being respectively arranged at the power generation operation face perpendicular to the direction in the power generation operation face；Heat source,
For providing heat, and for conducting the heat from the heat source to the heat-conductive assembly of the membrane electrode assembly, wherein
The heat-conductive assembly includes：First heat-conducting piece, edge are set to the pile at least perpendicular to the direction in the power generation operation face
Side；Second heat-conducting piece is set between first heat-conducting piece and the unipolar plate, is passed through between first heat-conducting piece
Conduction pattern transmits heat；And third heat-conducting piece, be set between membrane electrode assembly and unipolar plate, the third heat-conducting piece with
Heat is transmitted by conduction pattern between second heat-conducting piece and is in contact with second heat-conducting piece, the third heat-conducting piece
Heat is transmitted by conduction pattern between the membrane electrode assembly and is in contact with the power generation operation face of the membrane electrode assembly.
The fuel cell of the utility model includes the heat-conductive assembly of pile, the heat source for pile heat supply and conduction heat.Its
In, the heat-conductive assembly being made of the first, second, third heat-conducting piece is formed independently of the roads bipolar plates Wai Waire, is membrane electrode assembly
Part provides heat supply, heat dissipation, soakage function.Second, third heat-conducting piece forms the external circuit outside independently of bipolar plates, is membrane electrode assembly
Part provides current collection, conducting function.Such set-up mode has shared the function of bipolar plates, expands the selection range of bipolar plates,
Greatly reduce the cost of bipolar plates.Can not only efficiently solve pile heating preheating time it is long caused by user wait for
The problem of overlong time improves the consistency of stack temperature, can also reduce the manufacturing cost and difficulty of processing of fuel cell, expands
The scope of application of big fuel cell.
Below with reference to the drawings and specific embodiments to the technical solution of the utility model and the advantages of thus bring into
Row is described in further detail.
Description of the drawings
Fig. 1 is according to a kind of exploded perspective view of the fuel cell of embodiment of the utility model.
Fig. 2 is the front view of the fuel cell in Fig. 1.
Fig. 3 is the sectional view along line A-A of the fuel cell in Fig. 1.
Fig. 4 is the exploded perspective view according to the fuel cell of the utility model another embodiment.
Fig. 5 is the front view of the fuel cell in Fig. 4.
Fig. 6 is the sectional view along A '-A ' lines of the fuel cell in Fig. 4.
Fig. 7 is the exploded perspective view according to the fuel cell of the utility model another embodiment.
Fig. 8 is the front view of the fuel cell in Fig. 7.
Fig. 9 is the fuel cell in Fig. 7 along A "-A " sectional view of line.
Specific implementation mode
Below in conjunction with the drawings and specific embodiments to the utility model is related to various aspects be described in detail.It needs
Illustrate, the attached drawing in the utility model is only used for illustrating specific embodiment of the present utility model, to this practicality
Concrete structure, relative position, material of new fuel cell all parts etc. do not constitute any restriction, and the component in attached drawing is simultaneously
It is not necessarily drawn to scale, focuses on that the design of the utility model is illustrated；Also, this practicality is new
The specific implementation mode of type is merely illustrative, and does not constitute any restriction to the scope of protection of the utility model.
In each specific implementation mode of the utility model, the well-known structure or material that are directed to are not made
It is described in detail.Also, feature, structure or characteristic described in the utility model can be in one or more embodiments with any
Mode combines.In addition, it will be appreciated by those skilled in the art that following various embodiments are served only for for example, rather than using
In restriction the scope of protection of the utility model.It will be understood by those skilled in the art that described herein and shown in the drawings each
Component in embodiment can be arranged and be designed in a variety of different configurations or ratio.
The embodiment of the utility model provides a kind of fuel cell, including：Pile, the pile include at least a piece of
Membrane electrode assembly and at least one bipolar plates, wherein the upper and lower surface of every membrane electrode assembly is both provided with power generation work
Make face, at least a piece of membrane electrode assembly and at least one bipolar plates are arranged to along perpendicular to the power generation operation face
Direction stacked arrangement；Heat source, for providing heat；And for conducting the heat from the heat source to described at least a piece of
The heat-conductive assembly of membrane electrode assembly, wherein the heat-conductive assembly includes：First heat-conducting piece, along perpendicular to the power generation operation face
Direction be set at least side of the pile, the second heat-conducting piece, be set to first heat-conducting piece with it is described at least one
Between bipolar plates, heat is transmitted by conduction pattern between first heat-conducting piece, third heat-conducting piece is set to stacked arrangement
Membrane electrode assembly and bipolar plates between, between the third heat-conducting piece and second heat-conducting piece pass through conduction pattern transmit heat
It measures and is in contact with second heat-conducting piece, transmitted by conduction pattern between the third heat-conducting piece and the membrane electrode assembly
Heat is simultaneously in contact with the power generation operation face of the membrane electrode assembly.
The utility model embodiment further provides a kind of fuel cells, including：Pile, the pile include sheet of membrane
Electrode assembly and a pair of of unipolar plate, wherein the upper and lower surface of membrane electrode assembly is both provided with power generation operation face, and described one
It is respectively arranged at upside, the downside in the power generation operation face of the membrane electrode assembly to unipolar plate, is arranged to along perpendicular to the hair
The direction stacked arrangement of electric working face.Heat source, for providing heat, and for conducting the heat from the heat source to institute
State the heat-conductive assembly of membrane electrode assembly, wherein the heat-conductive assembly includes：First heat-conducting piece, along perpendicular to the power generation operation
The direction in face is set at least side of the pile, and the second heat-conducting piece is set to first heat-conducting piece and the unipolar plate
Between, heat is transmitted by conduction pattern between first heat-conducting piece, third heat-conducting piece is set to membrane electrode assembly and list
Between pole plate, heat is transmitted by conduction pattern between the third heat-conducting piece and second heat-conducting piece and is led with described second
Warmware is in contact, by conduction pattern transmission heat and electric with the film between the third heat-conducting piece and the membrane electrode assembly
The power generation operation face of pole component is in contact.
The good capacity of heat transmission of first heat-conducting piece can not only ensure the quick conduction of heat, play the role of heat conduction, and
And can ensure the temperature consistency between the second heat-conducting piece of different location, play the role of soaking body.In addition, the first heat-conducting piece
Exposed parts can provide more heat dissipation areas for heat dissipation, radiator or profit is further subject to waste heat convenient for setting
With.The design of built-in working medium avoid working medium leak, peculiar smell the problems such as generation.Outer solid shell ensure that first, second
Hot transmission can be carried out using conduction pattern between heat-conducting piece, ensure that heat transfer efficiency.First heat-conducting piece collection heat conduction, heat dissipation, soaking
It is integrated, completes multiple functions using a component, become most simple design.The setting of second heat-conducting piece effectively increases itself and
One, the contact area of third heat-conducting piece improves the capacity of heat transmission, while alleviating itself to greatest extent because surface area increases band
The increase of the volume, quality come.The design being set to outside power generation operation face can carry out preservative treatment to avoid to it, simplify
Production technology reduces production cost.Third heat-conducting piece using lightweight, high heat conduction, it is highly conductive, corrosion-resistant, have excellent sealing work
Carbon material, only need to simply process can efficiently be membrane electrode assembly the heat supply of power generation operation face, heat dissipation, current collection, lead
Electricity.
In some embodiments, the first heat-conducting piece can be positioned at the side of pile or both sides or three sides or four sides.First
The thermal conductivity of heat-conducting piece is not less than 10W/mK.First heat-conducting piece can be by solid shell and the fluid being enclosed in solid shell work
Matter forms, to increase thermal conductivity, the problems such as realizing the uniform conductive of heat and can solve working medium peculiar smell.For example, solid shell
It can be made with nonmetallic not less than the metal of 10W/mK by thermal conductivity, such as by copper, iron, aluminium, nickel, titanium, aluminium nitride, oxidation
Aluminium, silicon carbide, carbon etc. are made；Fluid working substance can be made of liquid or gas.In some embodiments, the first heat-conducting piece can
It is more than the phase transformation heat pipe of 400W/mK for heat pipe, such as phase transformation heat pipe and non-phase transformation heat pipe, such as thermal conductivity, or is more than
The non-phase transformation heat pipe of 1000W/mK, even greater than 4000W/mK.First heat-conducting piece also can be by metal or nonmetallic obtained, example
Such as it is made by gold, silver, copper, iron, aluminium, nickel or titanium, such as aluminium nitride, aluminium oxide, silicon carbide and carbon.
In some embodiments, the second heat-conducting piece can be in contact with bipolar plates or be not in contact with bipolar plates (such as
It can be connected to bipolar plates both sides by hook), pass through conduction between the second heat-conducting piece and the first heat-conducting piece and third heat-conducting piece
Mode transmits heat, and its role is to the heat transfers for passing over the first heat-conducting piece to third heat-conducting piece, with light as possible
Quality, the contact area of more as possible increase and the first heat-conducting piece, third heat-conducting piece.The quantity of second heat-conducting piece can be with first
The quantity of heat-conducting piece is corresponding：When the first heat-conducting piece is only arranged at the side of pile, the second heat-conducting piece can also be only arranged at double
The side of pole plate；When the first heat-conducting piece is only arranged at the both sides of pile, the second heat-conducting piece may also set up in the both sides of bipolar plates.
The thermal conductivity of second heat-conducting piece be not less than 120W/mK, such as can by metal or it is nonmetallic be made, such as by gold, silver, copper,
Aluminium, aluminium nitride and carbon etc. are made.
The power generation operation face of third heat-conducting piece and membrane electrode assembly is in close contact, and is risen and is transferred heat to membrane electrode assembly
Effect.It need to only consider the heat conduction of material, conduction, corrosion-resistant, trapping without undertaking the functions such as intensity, the flow field of bipolar plates
Performance.The material that third heat-conducting piece can be not less than 120W/mK by various thermal conductivitys is made.Since third heat-conducting piece also needs to
Conductive effect is played, therefore the resistivity for making the material of third heat-conducting piece should be less than 1x10-4Ω·m.Third heat-conducting piece can
To be made of conductive nonmetal material, the nonmetallic materials include but not limited to：Carbon.
It is connected using fastening means between first, second, third heat-conducting piece, utilizes the heat transfer side of efficient solid conduction
Formula does not use moving component, number of components few, and simple in structure, construction is easy, system stability and durability, lower cost for material.
When the first heat-conducting piece (or sheathing material) conduction, it is also provided between the first heat-conducting piece and the second heat-conducting piece
Insulating part, to avoid short circuit phenomenon, at this point, the first heat-conducting piece is in contact by the insulating part with the second heat-conducting piece.Insulating part is answered
The material of lightweight, Bao Xing, high temperature resistant, good insulating is selected to make, resistivity is not less than 1x 1010Ω m, insulating part can be by
Ceramic material or plastic material are made, ceramic material can be selected from aluminium nitride, aluminium oxide, plastic material can be selected from nylon PA,
Polyether-ether-ketone PEEK, polyimides PI, polyphenylene thioether PPS, polytetrafluoroethylene PTFE and liquid crystal polymer LCP etc..
In alternative embodiments, when the first heat-conducting piece is non-conductive, (such as it is the insulating materials such as ceramics or it is solid
Body case is made by insulating materials such as ceramic materials) or the second heat-conducting piece it is non-conductive when (such as the second heat-conducting piece is exhausted by ceramics etc.
Edge material is made, and external circuit conducting function is realized by additional conductive component), the design of insulating part can also be omitted.
As a result of the design of the heat-conductive assembly outside independently of bipolar plates, therefore the function of bipolar plates is greatly simplified
, without having thermal conductivity ability, only need to have the performances such as intensity, trapping, corrosion-resistant, it is possible to using it is cheap,
Lightweight, corrosion-resistant, easy processing material are made, and can greatly reduce the material cost and processing charges of bipolar plates, improve double
The service life of pole plate expands the use scope of fuel cell.
Simultaneously as using the heat-conductive assembly design outside independently of bipolar plates, changing bipolar plates in the prior art is
The relative position of the pattern of membrane electrode assembly heat supply, bipolar plates and membrane electrode assembly is also changed.It is double in the utility model
It is separated by third heat-conducting piece between pole plate and membrane electrode assembly.When heat is incoming from third heat-conducting piece, bipolar plates and film
The phenomenon that will produce contention heat between electrode assembly.Since membrane electrode assembly is made by acidic materials and high molecular material
, therefore thermal conductivity is very low, if the material of bipolar plates leading with 10W/mK or more as U.S. Department of Energy requires
Heating rate just obtains the heat that third heat-conducting piece transmits prior to membrane electrode assembly, delays the pipeline start up by preheating time of membrane electrode assembly.Cause
This is changed to make bipolar plates/unipolar plate using the low-down material of thermal conductivity in the present invention.
Embodiment according to the present utility model, the thermal conductivity for making the high molecular material that bipolar plates/unipolar plate uses are answered
More lower, better so that the heat that is imported by third heat-conducting piece is as much as possible to be transmitted to membrane electrode assembly.However even so, with
Time along length, bipolar plates can still absorb heat heating, and temperature eventually tends to be close with the temperature of membrane module.But as long as film is electric
Pole component is started to work, and heat will be discharged.And heat pre-heating temperature elevation of the bipolar plates to membrane electrode assembly using these heats
It would not cause any harmful effect.Moreover, bipolar plates thermal conductivity is low, heat absorption is slow, can also be at each by membrane electrode
Atmosphere effect is formed in the single generator unit that component, third heat-conducting piece, the second heat-conducting piece and bipolar plates are formed, it is greatly advantageous
In the demand that membrane electrode assembly stablizes operating temperature.In some embodiments, the thermal conductivity of bipolar plates is not more than 10W/
MK, so that heat is transferred to membrane electrode assembly to heat membrane electrode assembly as far as possible, resistivity is more than 1 × 10-4Ω·m.It is double
Pole plate/unipolar plate can be made of ceramics or plastics, for example, can be by nylon PA, polyether-ether-ketone PEEK, polyimides PI, polyphenyl
Thioether PPS, polytetrafluoroethylene PTFE and liquid crystal polymer LCP are made, and the thermal conductivity of these materials is not more than 10W/mK, corrosion resistant
Erosion rate is less than 1 μ A/cm2, hydrogen air penetrability be less than 2.10-6cm3/cm2S, under 0.45Mp pressure heat distortion temperature not less than 260 DEG C,
Resistivity is more than 1 × 10-4Ω·m。
【Embodiment 1】
Fig. 1 is according to a kind of exploded perspective view of the fuel cell of embodiment of the utility model, and Fig. 2 is the combustion in Fig. 1
Expect the front view of battery, Fig. 3 is the sectional view along line A-A of the fuel cell in Fig. 1.
As shown in Figure 1 to Figure 3, the fuel cell of the utility model includes for the pile of power generation, for self-heat power in future
Heat conduct to the heat-conductive assembly of pile and the heat source for providing heat.
Pile includes 40 2 lists membrane electrode assembly 1,38 bipolar plates 2 and be respectively arranged at the top and bottom of pile
Pole plate 3, heat-conductive assembly include that 2 the first heat-conducting pieces, 4,80 the second heat-conducting pieces 5 and 80 third heat-conducting pieces 6 (only show in figure
The heat-conducting piece of the 1st membrane electrode assembly, the 20th membrane electrode assembly and the 40th membrane electrode assembly and its both sides and bipolar is gone out
Plate/unipolar plate, remaining duplicate components are omitted, and only make to illustrate).It is passed by conduction pattern between first heat-conducting piece and the second heat-conducting piece
Heat is passed, heat, third heat-conducting piece and membrane electrode assembly are transmitted by conduction pattern between the second heat-conducting piece and third heat-conducting piece
Between heat transmitted by conduction pattern, all parts by conduction pattern transmit heat each other.
Membrane electrode assembly 1 is proton exchange membrane electrode component (for example, the Celtec-P- bought from ADVEDT companies of the U.S.
1000MEA type proton exchange membrane electrodes component), as shown in Figure 1, it is hexahedron structure, power generation operation face 11 is arranged in its face
On maximum two faces of product (i.e. upper and lower surface in Fig. 1), the area in power generation operation face is about 45cm2。
In the form of sheets, upper and lower surface is both provided with flow field 21 to bipolar plates, and flow field is serpentine-like.Unipolar plate and membrane electrode
The corresponding surface of component is also equipped with flow field, that is, the lower surface for being located at the unipolar plate at the top of pile is provided with flow field 31, is located at
The upper surface of the unipolar plate of pile bottom is provided with flow field 31, and flow field is serpentine-like.Bipolar plates and unipolar plate are by polyphenylene sulfide
PPS is made, thermal conductivity 2w/mk, 0.85 μ A/cm of corrosion-resistant rate2, hydrogen air penetrability 1.23-6cm3/cm2S, under 1.82Mp pressure
270 DEG C of heat distortion temperature, resistivity 3*1016Ω·m。
Membrane electrode assembly 1 and bipolar plates 2 along perpendicular to the direction in power generation operation face (Y-direction in such as Fig. 1) stacked arrangement,
And the power generation operation face of membrane electrode assembly and the flow field of bipolar plates/unipolar plate correspond.
As shown in Figure 1, the first heat-conducting piece 4 is set to along perpendicular to the direction in power generation operation face 11 (Y-direction in such as Fig. 1)
The both sides of pile are in long plate shape, with quick, the uniform heat for transmitting heat source and generating.It is more than 1000W/mK for thermal conductivity
Non- phase transformation heat pipe, be made of solid shell (steel) and the fluid working substance being enclosed in solid shell.
Second heat-conducting piece 5 is set between bipolar plates 2 and the first heat-conducting piece 4, is located at the both sides of bipolar plates, that is, it is along hair
The direction (X-direction in such as Fig. 1) of electric working face 11 is set to the both sides of bipolar plates, and passes through insulating part 8 with the first heat-conducting piece 4
It is in contact, for will be from the heat transfer that the first heat-conducting piece passes over to third heat-conducting piece.Second heat-conducting piece passes through the company of hook
Be connected on bipolar plates both sides, can be in contact with bipolar plates or be not in contact with bipolar plates (in the present embodiment, the second heat-conducting piece with
Bipolar plates are in contact), can be identical as the thickness of bipolar plates, in order to which all parts stack in pile.Second heat-conducting piece institute
Locate power generation operation face of the position far from membrane electrode assembly, can effectively avoid the corrosion of acidic materials, reduces the anti-of material
Corruption requires, and saves the expense of anticorrosion process.Second heat-conducting piece is made of aluminum, and the thermal conductivity of aluminium is 200W/mK, is conducive to heat
Amount is transmitted, and commercially available cheap, processing technology is simple, is conducive to control cost.
At this point, the solid shell due to the first heat-conducting piece is steel, the second heat-conducting piece is made of aluminum, the second heat-conducting piece and first
Insulating part 8 is additionally provided between heat-conducting piece, to avoid short circuit phenomenon.As shown in Figure 1, insulating part can be attached in the form of sheets
Position that one heat-conducting piece is in contact with the second heat-conducting piece (that is, positioned at the both sides of pile, it is attached on the first heat-conducting piece, to avoid
First heat-conducting piece and the second heat-conducting piece are in direct contact generation short circuit), insulating part uses fire resistant polymer polymer polyimide
PI makes, and is the film of thickness 0.15mm.
Third heat-conducting piece 6 is set between adjacent membrane electrode assembly 1 and bipolar plates 2, that is, is located at the upper of membrane electrode assembly
Lower both sides are in contact with the power generation operation face 11 of membrane electrode assembly, and are in contact with the second heat-conducting piece 5.Third heat-conducting piece passes through
The stacked arrangement of membrane electrode assembly and bipolar plates is clipped in the both sides up and down of membrane electrode assembly, is in close contact with the second heat-conducting piece to pass
Heat conduction amount, can be contacted between third heat-conducting piece and the first heat-conducting piece can not also contact (in the present embodiment, third heat-conducting piece
Have gap between the first heat-conducting piece) (as shown in Figure 2).On third heat-conducting piece with the power generation operation face of membrane electrode assembly and double
The corresponding part in flow field of pole plate is also provided with the perforation 61 of supplied gas entrance, which should be evenly distributed as much as possible, and meets
Gas enters membrane electrode assembly surface and is electrochemically reacted requirement.Third heat-conducting piece is the corrosion resistant high heat conduction graphite (U.S.
400 0.94T of GRAF SS), thermal conductivity 400W/mK.Although the hardness of graphite is relatively low, its thermal conductivity can be with
Very high, to be embodied as the demand of membrane electrode assembly heat supply with flying colors, also, the density of graphite is 1.5g/cm3, specific heat is
510J/Kg DEG C, resistivity is again smaller than 1x10-6Ω m, the 1x10 required better than U.S. Department of Energy-4The standard of Ω m, because
This can be very good to undertake the task for membrane electrode assembly thermal conductivity.
In this way, heat is arrived from heat source by the first heat-conducting piece (and insulating part), the second heat-conducting piece and third heat-conducting piece
Up to membrane electrode assembly, between the first heat-conducting piece 4 and the second heat-conducting piece 5, between the second heat-conducting piece 5 and third heat-conducting piece 6, third leads
It all uses solid connection in a manner of being in close contact between warmware 6 and membrane electrode assembly 1, heat is transmitted using conduction pattern,
Heat transfer efficiency is high, and such fuel cell structure is simple and reliable, and of low cost, difficulty of processing is very low, is especially advantageous for advising greatly
Mould produces.
Heat source 7 is arranged in the lower section of the first heat-conducting piece, by the method for burning fuel fully to discharge heat, for example, adopting
Pure methanol is burnt to provide heat for fuel cell with ethanol combustor, and optionally, heat source can also provide heat otherwise
Amount.
To the fuel cell measuring temperature according to above-described embodiment.
From top to down the 1st membrane electrode assembly, install on the 20th membrane electrode assembly and the 40th membrane electrode assembly
Temperature measuring point, as shown in Figure 1, installing 3 temperature measuring points (in the position of center line in the power generation operation face of every membrane electrode assembly respectively
On the power generation operation face positioned at upper surface), the thermometric on the membrane electrode assembly (the 1st membrane electrode assembly) of heat source farther out
Point number is a, b, c, the temperature measuring point number on the membrane electrode assembly (the 20th membrane electrode assembly) in the middle part of pile be d, e,
F, the temperature measuring point number on the membrane electrode assembly closer apart from heat source (the 40th membrane electrode assembly) is g, h, i.It acquires within every 60 seconds
Data count the heating situation of every group of temperature measuring point, after carrying out 10 times or more experiments, using its average value as measurement result.
For measured each temperature measuring point since environment temperature (20 DEG C), temperature measurement result when often crossing 60 seconds is as shown in table 1.
Table 1
| Time (s) | Point a | Point b | Point c | Point d | Point e | Point f | Point g | Point h | Point i |
| 0 | 19.6 | 20.8 | 20.3 | 20.6 | 20.4 | 19.8 | 19.9 | 20.1 | 20.5 |
| 60 | 23.6 | 22.2 | 23.1 | 20.8 | 21.7 | 21.5 | 30.9 | 29.7 | 30.7 |
| 120 | 28.1 | 25.2 | 27.9 | 34.3 | 28.4 | 35.1 | 48.8 | 45.7 | 49.4 |
| 180 | 35.2 | 30.9 | 36.8 | 42.7 | 40.2 | 31.6 | 66.9 | 61.4 | 67.2 |
| 240 | 49.6 | 44.2 | 50.5 | 59.4 | 57.2 | 60.1 | 85.7 | 79.1 | 84.6 |
| 300 | 77.4 | 71.9 | 78.2 | 81.5 | 77.4 | 83.4 | 102.4 | 99.1 | 101.3 |
| 360 | 103.3 | 97.6 | 104.2 | 101.2 | 99.1 | 101.7 | 120.2 | 117.1 | 121.1 |
| 420 | 130.5 | 128.1 | 131.6 | 125.9 | 121.4 | 126.3 | 139.5 | 136.1 | 141.8 |
| 480 | 154.7 | 152.1 | 155.8 | 152.1 | 149.6 | 152.1 | 170.1 | 167.3 | 169.3 |
| 540 | 169.5 | 168.3 | 168.9 | 165.4 | 164.8 | 166.2 | 175.6 | 173.3 | 176.9 |
In the present embodiment, the operating temperature for the proton exchange membrane electrode component that fuel cell uses is 120 DEG C to 180 DEG C,
Preferred operating temperature is 160 DEG C, and membrane electrode assembly is easily damaged when more than 200 DEG C, and membrane electrode assembly is difficult to when less than 120 DEG C
Effectively power generation.In the prior art, the heating preheating of fuel cell usually requires 30~60 minutes, and it is uneven to heat up, pile
Whole generating capacity is poor.
According to table 1 as can be seen that the membrane electrode assembly of the utility model can reach effectively for 420 seconds from after beginning to warm up
Operating temperature can greatly shorten the time of heating preheating compared with prior art.Meanwhile not only on a piece of membrane electrode assembly
Temperature spread it is smaller, the temperature spread in pile between the membrane electrode assembly of different location is also smaller.Close to heat source
After membrane electrode assembly reaches preferred operating temperature range, the temperature positioned at the membrane electrode assembly at middle part and top can also reach quickly
To preferred operating temperature, ensure that close to heat source membrane electrode assembly will not temperature it is excessively high, the membrane electrode assembly at middle part and top
Will not temperature it is too low, embody excellent temperature consistency, for promoted pile generating capacity provide sound assurance.
It can be seen that the fuel cell of the present embodiment reaches excellent system hot property with cheap manufacturing cost, take
Obtained expected effect.
【Embodiment 2】
Fig. 4 is according to the exploded perspective view of the fuel cell of the utility model another embodiment, and Fig. 5 is in Fig. 4
The front view of fuel cell, Fig. 6 are the sectional views along A '-A ' lines of fuel cell.
As shown in Figures 4 to 6, the fuel cell of the utility model includes for the pile of power generation, for self-heat power in future
Heat conduct to the heat-conductive assembly of pile and the heat source for providing heat.
Pile includes 2 membrane electrode assemblies 1 ', 1 bipolar plates 2 ' and 2 lists being respectively arranged at the top and bottom of pile
Pole plate 3 ', heat-conductive assembly include 2 the first heat-conducting pieces 4 ', 6 the second heat-conducting pieces 5 ' and 4 third heat-conducting pieces 6 '.First heat conduction
Heat is transmitted by conduction pattern between part and the second heat-conducting piece, passes through conduction pattern between the second heat-conducting piece and third heat-conducting piece
Heat is transmitted, heat is transmitted by conduction pattern between third heat-conducting piece and membrane electrode assembly, all parts pass through each other
Conduction pattern transmits heat.
Membrane electrode assembly 1 ' is proton exchange membrane electrode component (for example, the Celtec-P- bought from ADVEDT companies of the U.S.
1000MEA type proton exchange membrane electrodes component), as shown in figure 4, it is hexahedron structure, power generation operation face (i.e. power generation operation face
11 ') it is arranged on maximum two faces of its area (i.e. upper and lower surface in Fig. 4), the area in power generation operation face is about
45cm2。
In the form of sheets, upper and lower surface is both provided with flow field 21 ' to bipolar plates, and flow field is serpentine-like.Unipolar plate in the form of sheets,
Its surface opposite with membrane electrode assembly is provided with flow field, that is, the lower surface for being located at the unipolar plate at the top of pile is provided with flow field
31 ', the upper surface of the unipolar plate of pile bottom is provided with flow field 31 ', flow field is serpentine-like.Bipolar plates and unipolar plate by
Polyphenylene thioether PPS is made, thermal conductivity 2w/mk, 0.85 μ A/cm of corrosion-resistant rate2, hydrogen air penetrability 1.23-6cm3/cm2s、
270 DEG C of heat distortion temperature, resistivity 3*10 under 1.82Mp pressure16Ω m parts.
Row is laminated along the direction (Y-direction in such as Fig. 4) perpendicular to power generation operation face in membrane electrode assembly 1 ' and bipolar plates 2 '
Row, and the power generation operation face of membrane electrode assembly and the flow field of bipolar plates/unipolar plate correspond.
As shown in figure 4, the first heat-conducting piece 4 ' is arranged along the direction (Y-direction in such as Fig. 4) perpendicular to power generation operation face 11 '
It is in long plate shape in the both sides of pile, rapidly and uniformly to transmit the heat of heat source generation.It is copper sheet, thermal conductivity 377W/
m·K。
Second heat-conducting piece 5 ' is set between bipolar plates 2 ' and the first heat-conducting piece 4 ' and unipolar plate 3 ' and the first heat-conducting piece
Between 4 ', that is, it is set to the both sides of bipolar plates/unipolar plate along the direction (X-direction in such as Fig. 4) in power generation operation face 11 ', and
It is in contact by insulating part 8 ' with the first heat-conducting piece, the heat transfer for passing over the first heat-conducting piece to third heat conduction
Part.Second heat-conducting piece by hook be connected to bipolar plates/unipolar plate both sides, can be in contact with bipolar plates/unipolar plate or not with
Bipolar plates/unipolar plate is in contact (in the present embodiment, the second heat-conducting piece is in contact with bipolar plates/unipolar plate), can with it is bipolar
The thickness of plate/unipolar plate is identical, in order to which all parts stack in pile.Second heat-conducting piece present position is far from membrane electrode assembly
The power generation operation face of part can effectively avoid the corrosion of acidic materials, reduce the requirement for anticorrosion of material, save anti-corrosion work
The expense of skill.Second heat-conducting piece is made of copper, thermal conductivity 377W/mK, is conducive to heat transfer, commercially available cheap,
Processing technology is simple, is conducive to control cost.
At this point, since the first heat-conducting piece is copper sheet, the second heat-conducting piece is made of copper, the first heat-conducting piece and the second heat-conducting piece it
Between be additionally provided with insulating part 8 ', to avoid short circuit phenomenon.As shown in figure 4, insulating part can be attached to the first heat-conducting piece in the form of sheets
The position being in contact with the second heat-conducting piece (that is, positioned at the both sides of pile, is attached on the first heat-conducting piece, to avoid the first heat conduction
Part and the second heat-conducting piece are in direct contact generation short circuit), insulating part is made of fire resistant polymer polymer polyimide PI, is
The film of thickness 0.15mm.
Third heat-conducting piece 6 ' is set to membrane electrode assembly between adjacent membrane electrode assembly 1 ' and bipolar plates 2 ' and adjacent
Between part 1 ' and unipolar plate 3 ', it is located at the both sides up and down of membrane electrode assembly, connects with the power generation operation face 11 ' of membrane electrode assembly
It touches, and is in contact with the second heat-conducting piece 5 '.Third heat-conducting piece is clipped in film electricity by the stacked arrangement of membrane electrode assembly and bipolar plates
The both sides up and down of pole component are in close contact to conduct heat with the second heat-conducting piece, can contact between the first heat-conducting piece and also may be used
Not contact and (in the present embodiment, have gap between third heat-conducting piece and the first heat-conducting piece).It is electric with film on third heat-conducting piece
The corresponding part in flow field in the power generation operation face and bipolar plates of pole component is also provided with the perforation 61 ' of supplied gas entrance, should
Perforation should be evenly distributed as much as possible, and met gas and entered membrane electrode assembly surface and be electrochemically reacted requirement.Third heat-conducting piece is
Corrosion resistant high heat conduction graphite (400 0.94T of U.S. GRAF SS), thermal conductivity 400W/mK.Although the hardness of graphite
It is relatively low, but its thermal conductivity can be very high, so that it is embodied as the demand of membrane electrode assembly heat supply with flying colors, also, graphite
Density is 1.5g/cm3, specific heat is 510J/Kg DEG C, and resistivity is again smaller than 1x10-6Ω m, better than U.S. Department of Energy requirement
1x10-4The standard of Ω m, therefore can be very good to undertake the task for membrane electrode assembly thermal conductivity.
In this way, heat is arrived from heat source by the first heat-conducting piece (and insulating part), the second heat-conducting piece and third heat-conducting piece
Up to membrane electrode assembly, between the first heat-conducting piece 4 ' and the second heat-conducting piece 5 ', between the second heat-conducting piece 5 ' and third heat-conducting piece 6 ',
It all uses solid connection in a manner of being in close contact between three heat-conducting pieces 6 ' and membrane electrode assembly 1 ', is transmitted using conduction pattern
Heat, heat transfer efficiency is high, and such fuel cell is simple and reliable, and of low cost, difficulty of processing is very low, is especially advantageous for advising greatly
Mould produces.
Heat source 7 ' is arranged in the lower section of the first heat-conducting piece, by the method for burning fuel fully to discharge heat, for example, adopting
Pure methanol is burnt to provide heat for fuel cell with ethanol combustor, and optionally, heat source can also provide heat otherwise
Amount.
To the fuel cell measuring temperature according to above-described embodiment.
From top to down the 1st membrane electrode assembly and the 2nd membrane electrode assembly on temperature measuring point is installed respectively, such as Fig. 4 institutes
Show, 3 temperature measuring points is installed in the position of center line in the power generation operation face of every membrane electrode assembly respectively, apart from the film of heat source farther out
It is a ' that temperature measuring point on electrode assembly (the 1st membrane electrode assembly), which is numbered, b ', c ', the membrane electrode assembly closer apart from heat source (the
2 membrane electrode assemblies) on temperature measuring point number be d ', e ', f '.The data of acquisition in every 60 seconds, count the liter of every group of temperature measuring point
Warm situation, after carrying out 10 times or more experiments, using its average value as measurement result.Measured each temperature measuring point is from environment temperature
(20 DEG C) the temperature regime conclusions started at every 60 seconds are as shown in table 2.
Table 2
In the present embodiment, the operating temperature for the proton exchange membrane electrode component that fuel cell uses is 120 DEG C to 180 DEG C,
Preferred operating temperature is 160 DEG C, and membrane electrode assembly is easily damaged when more than 200 DEG C, and membrane electrode assembly is difficult to when less than 120 DEG C
Effectively power generation.In the prior art, the heating preheating of fuel cell usually requires 30~60 minutes, and it is uneven to heat up, pile
Whole generating capacity is poor.
According to table 1 as can be seen that the membrane electrode assembly of the utility model can reach effectively for 300 seconds from after beginning to warm up
Operating temperature can greatly shorten the time of heating preheating compared with prior art.Meanwhile not only on a piece of membrane electrode assembly
Temperature spread it is smaller, the temperature spread in pile between the membrane electrode assembly of different location is also smaller.Close to heat source
After membrane electrode assembly reaches preferred operating temperature range, the temperature positioned at the membrane electrode assembly at middle part and top can also reach quickly
To preferred operating temperature, ensure that close to heat source membrane electrode assembly will not temperature it is excessively high, the membrane electrode assembly at middle part and top
Will not temperature it is too low, embody excellent temperature consistency, for promoted pile generating capacity provide sound assurance.
It can be seen that the fuel cell of the present embodiment reaches excellent system hot property with cheap manufacturing cost, take
Obtained expected effect.
【Embodiment 3】
Fig. 7 is according to the exploded perspective view of the fuel cell of the utility model another embodiment, and Fig. 8 is in Fig. 7
The front view of fuel cell, Fig. 9 are fuel cells along A "-A " sectional view of line.
As shown in fig. 7, the fuel cell of the utility model includes for the pile of power generation, for the heat of self-heat power in future
Conduct the heat source to the heat-conductive assembly of pile and for providing heat.
Pile includes 1 membrane electrode assembly 1 " and 2 unipolar plates 3 " being respectively arranged at the top and bottom of pile, heat conduction group
Part includes 2 the first heat-conducting pieces 4 ", 4 the second heat-conducting pieces 5 " and 2 third heat-conducting pieces 6 ".First heat-conducting piece and the second heat-conducting piece
Between by conduction pattern transmit heat, between the second heat-conducting piece and third heat-conducting piece pass through conduction pattern transmit heat, third
Heat is transmitted by conduction pattern between heat-conducting piece and membrane electrode assembly, all parts transmit heat by conduction pattern each other
Amount.
Membrane electrode assembly 1 " is proton exchange membrane electrode component (for example, the Celtec-P- bought from ADVEDT companies of the U.S.
1000MEA type proton exchange membrane electrodes component), as shown in fig. 7, it is hexahedron structure, power generation operation face (i.e. power generation operation face
11 ") it is arranged on maximum two faces of its area (i.e. upper and lower surface in Fig. 7), the area in power generation operation face is about
45cm2。
In the form of sheets, the surface opposite with membrane electrode assembly is provided with flow field, that is, the monopole being located at the top of pile to unipolar plate
The lower surface of plate is provided with flow field 31 ", the upper surface of the unipolar plate of pile bottom is provided with flow field 31 ", flow field is in snake
Shape.Unipolar plate is made of polyphenylene thioether PPS, thermal conductivity 2w/mk, 0.85 μ A/cm of corrosion-resistant rate2, hydrogen air penetrability 1.23- 6cm3/cm2S, 270 DEG C of heat distortion temperature, resistivity 3*10 under 1.82Mp pressure16Ω·m。
Unipolar plate and membrane electrode assembly in pile is according to a piece of unipolar plate 3 ", a piece of membrane electrode assembly 1 " and a piece of monopole
The sequence of plate 3 " is along direction (Y-direction in such as Fig. 7) stacked arrangement perpendicular to power generation operation face, the power generation work of membrane electrode assembly
The flow field for making face and unipolar plate corresponds.
As shown in fig. 7, the first heat-conducting piece 4 " is arranged along the direction (Y-direction in such as Fig. 7) perpendicular to power generation operation face 11 "
It is in long plate shape in the both sides of pile, rapidly and uniformly to transmit the heat of heat source generation.It is aluminium nitride ceramics, and thermal conductivity is
180W/m·K。
Second heat-conducting piece 5 " is set between unipolar plate 3 " and the first heat-conducting piece 4 ", is located at the both sides of unipolar plate, that is, its edge
The direction (X-direction in such as Fig. 7) in power generation operation face 11 " is set to the both sides of unipolar plate, and is in contact with the first heat-conducting piece, uses
In the heat transfer for passing over the first heat-conducting piece to third heat-conducting piece.Second heat-conducting piece is connected to unipolar plate two by hook
Side can be in contact with unipolar plate or not be in contact that (in the present embodiment, the second heat-conducting piece connects with unipolar plate with unipolar plate
Touch), can be identical as the thickness of unipolar plate, in order to which all parts stack in pile.
In the present embodiment, the second heat-conducting piece can be made of aluminium nitride ceramics, and thermal conductivity 180W/mK is conducive to heat
Amount is transmitted.At this point, since the second heat-conducting piece is non-conductive, it is therefore desirable to increase conductive component on the second heat-conducting piece, can hold
External circuit conducting function is carried on a shoulder pole, the conductivity for undertaking the conductive component of conducting function should be less than 1x10-4Ω m meet U.S.'s energy
The requirement in source portion.In the present embodiment, using perforation, (such as the copper of implantable conductive part 51 " in perforation on the second heat-conducting piece 5 "
Nail) method so that the second heat-conducting piece is undertaken external circuit conducting function, can also use on the second heat-conducting piece not with first
The method of the region coating conductive metal of heat-conducting piece contact achieves the goal.Optionally, the second heat-conducting piece also can directly by gold, silver,
The conductive metals such as copper, aluminium are made.
Third heat-conducting piece 6 " is set between adjacent membrane electrode assembly 1 " and unipolar plate 3 ", i.e., it is located at membrane electrode assembly
Both sides up and down, be in contact with the power generation operation face 11 " of membrane electrode assembly, and be in contact with the second heat-conducting piece 5 ".Third heat conduction
Part is clipped in the both sides up and down of membrane electrode assembly by the arrangement of membrane electrode assembly and unipolar plate, with the second heat-conducting piece be in close contact with
Heat is conducted, can be contacted between the first heat-conducting piece can not also contact that (in the present embodiment, third heat-conducting piece is led with first
There is gap between warmware).It is corresponding with the power generation operation face of membrane electrode assembly and the flow field of bipolar plates on third heat-conducting piece
Part is also provided with the perforation 61 " of supplied gas entrance, which should be evenly distributed as much as possible, meet gas and enter membrane electrode assembly
Surface is electrochemically reacted requirement.Third heat-conducting piece is corrosion resistant high heat conduction graphite (400 0.94T of U.S. GRAF SS),
Its thermal conductivity is 400W/mK.Although the hardness of graphite is relatively low, its thermal conductivity can be very high, to realize with flying colors
For the demand of membrane electrode assembly heat supply, also, the density of graphite is 1.5g/cm3, specific heat is 510J/Kg DEG C, resistivity
Less than 1x10-6Ω m, the 1x10 required better than U.S. Department of Energy-4The standard of Ω m, therefore can be very good to undertake as film electricity
The task of pole component thermal conductivity.
In the present embodiment, non-conductive since the first heat-conducting piece, the second heat-conducting piece are aluminium nitride ceramics, therefore the
It is not necessary that insulating part is arranged between one heat-conducting piece and the second heat-conducting piece.
In this way, heat reaches membrane electrode assembly from heat source, by the first heat-conducting piece, the second heat-conducting piece and third heat-conducting piece
Part, between the first heat-conducting piece 4 " and the second heat-conducting piece 5 ", between the second heat-conducting piece 5 " and third heat-conducting piece 6 ", third heat-conducting piece 6 "
It all uses solid to connect in a manner of being in close contact between membrane electrode assembly 1 ", heat, heat transfer is transmitted using conduction pattern
It is efficient, and such fuel cell is simple and reliable, and of low cost, difficulty of processing is very low, is especially advantageous for mass producing.
Heat source 7 " is arranged in the lower section of the first heat-conducting piece, by the method for burning fuel fully to discharge heat, for example, adopting
Pure methanol is burnt to provide heat for fuel cell with ethanol combustor, and optionally, heat source can also provide heat otherwise
Amount.
To the fuel cell measuring temperature according to above-described embodiment.
As shown in fig. 7, the position of center line in the power generation operation face of membrane electrode assembly installs 3 temperature measuring points, temperature measuring point is compiled
Number for a ", b ", c ".The data of acquisition in every 60 seconds, count the heating situation of every group of temperature measuring point, are carrying out testing for 10 times or more
Afterwards, using its average value as measurement result.Measured each temperature measuring point since environment temperature (20 DEG C) at every 60 seconds when temperature
Situation conclusion is as shown in table 3.
Table 3
In the present embodiment, the operating temperature for the proton exchange membrane electrode component that fuel cell uses is 120 DEG C to 180 DEG C,
Preferred operating temperature is 160 DEG C, and membrane electrode assembly is easily damaged when more than 200 DEG C, and membrane electrode assembly is difficult to when less than 120 DEG C
Effectively power generation.In the prior art, the heating preheating of fuel cell usually requires 30~60 minutes, and it is uneven to heat up, pile
Whole generating capacity is poor.
According to table 3 as can be seen that the membrane electrode assembly of the utility model can reach from after beginning to warm up less than 300 seconds
The operating temperature of effect can greatly shorten the time of heating preheating compared with prior art.Meanwhile not only with a piece of membrane electrode assembly
Temperature spread on part is smaller, and the temperature spread in pile between the membrane electrode assembly of different location is also smaller.By near-thermal
After the membrane electrode assembly in source reaches preferred operating temperature range, the temperature for being located at the membrane electrode assembly on middle part and top can also be very
Reach preferred operating temperature soon, ensure that close to heat source membrane electrode assembly will not temperature it is excessively high, the membrane electrode at middle part and top
Component will not temperature it is too low, embody excellent temperature consistency, for promoted pile generating capacity provide sound assurance.
It can be seen that the fuel cell of the present embodiment shows excellent system hot property, expected effect is achieved.
Certainly, the fuel cell of the utility model is also not necessarily limited to above-described embodiment, and those skilled in the art can basis
The quantity of actual needs selection membrane electrode assembly and bipolar plates, such as 20 membrane electrode assemblies, 18 bipolar plates and 2 monopoles
Plate, 30 membrane electrode assemblies, 28 bipolar plates and 2 unipolar plates etc., the quantity of heat-conducting piece can also be selected according to actual needs
It selects, such as the first heat-conducting piece can surround 1,3,4 side of pile, the second heat-conducting piece can be located at 1,3,4 ends of bipolar plates/unipolar plate, film
Electrode assembly, bipolar plates/unipolar plate, heat-conductive assembly, heat source and/or insulating part are also not necessarily limited to the material in above-described embodiment, this
The technical staff in field can select according to actual needs.
The fuel cell of the utility model shows excellent system hot property, achieves expected effect.This practicality is new
Type solves the problems, such as the pre-heating temperature elevation of Proton Exchange Membrane Fuel Cells, enhances the generating capacity of fuel cell, reduces bipolar
The manufacturing cost of plate provides a kind of of simple structure and low cost, efficient fuel cell of high-performance.
The utility model terminology used herein and wording are just to for example, be not intended to constitute restriction.
It will be appreciated by those skilled in the art that under the premise of not departing from the basic principle of disclosed embodiment, to above-mentioned implementation
Each details in mode can carry out various change.Therefore, the scope of protection of the utility model is only determined by claim, in right
In it is required that, unless otherwise indicated, all terms should be understood by the broadest rational meaning.
Claims (23)
1. fuel cell, which is characterized in that including：
Pile, the pile include at least a piece of membrane electrode assembly and at least one bipolar plates, wherein every membrane electrode assembly
Upper and lower surface is both provided with power generation operation face, and at least a piece of membrane electrode assembly and at least one bipolar plates are set
It is set to along the direction stacked arrangement perpendicular to the power generation operation face；
Heat source, for providing heat；And
For conducting the heat from the heat source to the heat-conductive assembly of at least a piece of membrane electrode assembly, wherein described
Heat-conductive assembly includes：
First heat-conducting piece, along at least side for being set to the pile perpendicular to the direction in the power generation operation face；
Second heat-conducting piece is set between first heat-conducting piece and at least one bipolar plates, with first heat-conducting piece
Between heat transmitted by conduction pattern；
Third heat-conducting piece, is set between the membrane electrode assembly of stacked arrangement and bipolar plates, the third heat-conducting piece and described the
Transmitted and heat and be in contact with second heat-conducting piece by conduction pattern between two heat-conducting pieces, the third heat-conducting piece with it is described
Heat is transmitted by conduction pattern between membrane electrode assembly and is in contact with the power generation operation face of the membrane electrode assembly.
2. fuel cell, which is characterized in that including：
Pile, the pile include a piece of membrane electrode assembly and a pair of of unipolar plate, wherein the upper surface of membrane electrode assembly and following table
Face is both provided with power generation operation face, and the pair of unipolar plate is described along being respectively arranged at perpendicular to the direction in the power generation operation face
Upside, the downside in power generation operation face；
Heat source, for providing heat, and
For conducting the heat from the heat source to the heat-conductive assembly of the membrane electrode assembly, wherein the heat-conductive assembly
Including：
First heat-conducting piece, along at least side for being set to the pile perpendicular to the direction in the power generation operation face；
Second heat-conducting piece is set between first heat-conducting piece and the unipolar plate, is passed through between first heat-conducting piece
Conduction pattern transmits heat；
Third heat-conducting piece, is set between membrane electrode assembly and unipolar plate, the third heat-conducting piece and second heat-conducting piece it
Between transmitted and heat and be in contact with second heat-conducting piece by conduction pattern, the third heat-conducting piece and the membrane electrode assembly
Between transmitted and heat and be in contact with the power generation operation face of the membrane electrode assembly by conduction pattern.
3. fuel cell as claimed in claim 1 or 2, which is characterized in that the fuel cell further includes insulating part, described exhausted
Edge part edge is set to perpendicular to the direction in the power generation operation face between first heat-conducting piece and second heat-conducting piece, described
First heat-conducting piece is in contact by the insulating part with second heat-conducting piece.
4. fuel cell as claimed in claim 3, which is characterized in that the insulating part in the form of sheets, is attached to described first and leads
The position that warmware is in contact with second heat-conducting piece.
5. fuel cell as claimed in claim 1 or 2, which is characterized in that the thermal conductivity of first heat-conducting piece is not less than
The thermal conductivity of 10W/mK, the second heat-conducting piece and third heat-conducting piece is not less than 120W/mK.
6. fuel cell as claimed in claim 5, which is characterized in that first heat-conducting piece is by solid shell and is sealed in solid
Fluid working substance composition in body case.
7. fuel cell as claimed in claim 6, which is characterized in that the solid shell is by metal material or nonmetallic materials
It is made, the fluid working substance is liquid or gas.
8. fuel cell as claimed in claim 7, which is characterized in that the thermal conductivity of the metal material is more than 10W/mK；
The thermal conductivity of the nonmetallic materials is more than 10W/mK.
9. fuel cell as claimed in claim 8, which is characterized in that first heat-conducting piece is made of heat pipe, the heat pipe
Thermal conductivity be more than 400W/mK.
10. fuel cell as claimed in claim 9, which is characterized in that the heat pipe is thermal conductivity more than 1000W/mK's
Non- phase transformation heat pipe.
11. fuel cell as claimed in claim 8, which is characterized in that the metal material includes：Copper, iron, aluminium, nickel and titanium；
The nonmetallic materials include：Aluminium nitride, aluminium oxide, silicon carbide and carbon.
12. fuel cell as claimed in claim 5, which is characterized in that first heat-conducting piece is by metal material or nonmetallic
Material is made.
13. fuel cell as claimed in claim 12, which is characterized in that the metal material includes：Gold, silver, copper, iron, aluminium,
Nickel and titanium；The nonmetallic materials include：Aluminium nitride, aluminium oxide, silicon carbide and carbon.
14. fuel cell as claimed in claim 5, which is characterized in that second heat-conducting piece is by metal material or nonmetallic
Material is made.
15. fuel cell as claimed in claim 14, which is characterized in that the metal material includes：Gold, silver, copper, aluminium；Institute
Stating nonmetallic materials includes：Aluminium nitride ceramics, carbon.
16. fuel cell as claimed in claim 5, which is characterized in that the third heat-conducting piece is by conductive nonmetal material system
At.
17. fuel cell as claimed in claim 16, which is characterized in that the conductive nonmetal material includes：Carbon.
18. fuel cell as claimed in claim 4, which is characterized in that the resistivity of the insulating part is more than 1x1010Ω·m。
19. fuel cell as claimed in claim 18, which is characterized in that the insulating part is made of ceramics or plastics.
20. fuel cell as claimed in claim 19, which is characterized in that the ceramics include：Aluminium nitride, aluminium oxide, it is described
Plastics include：Nylon PA, polyether-ether-ketone PEEK, polyimides PI, polyphenylene thioether PPS, polytetrafluoroethylene PTFE and polymerizable mesogenic
Object LCP.
21. fuel cell as claimed in claim 1 or 2, which is characterized in that the thermal conductivity of the bipolar plates is not more than 10W/
MK, resistivity are more than 1 × 10-4Ω·m。
22. fuel cell as claimed in claim 21, which is characterized in that the bipolar plates are made of ceramics or plastics.
23. fuel cell as claimed in claim 22, which is characterized in that the plastics include：Nylon PA, polyether-ether-ketone
PEEK, polyimides PI, polyphenylene thioether PPS, polytetrafluoroethylene PTFE and liquid crystal polymer LCP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721815818.4U CN207651598U (en) | 2017-12-22 | 2017-12-22 | Fuel cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721815818.4U CN207651598U (en) | 2017-12-22 | 2017-12-22 | Fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN207651598U true CN207651598U (en) | 2018-07-24 |
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ID=62878369
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117747871A (en) * | 2024-02-19 | 2024-03-22 | 北京锦源创新科技有限公司 | Fuel cell, thermal device for the same and method of manufacturing the same |
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2017
- 2017-12-22 CN CN201721815818.4U patent/CN207651598U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117747871A (en) * | 2024-02-19 | 2024-03-22 | 北京锦源创新科技有限公司 | Fuel cell, thermal device for the same and method of manufacturing the same |
| CN117747871B (en) * | 2024-02-19 | 2024-05-14 | 北京锦源创新科技有限公司 | Fuel cell, thermal device for the same and method of manufacturing the same |
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