CN209329043U - A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell - Google Patents
A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell Download PDFInfo
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- CN209329043U CN209329043U CN201920130432.2U CN201920130432U CN209329043U CN 209329043 U CN209329043 U CN 209329043U CN 201920130432 U CN201920130432 U CN 201920130432U CN 209329043 U CN209329043 U CN 209329043U
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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
Abstract
A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell, including multiple stackings and concatenated battery unit, each battery unit respectively include: upper metal connecting plate, upper seal glass, cathode side metal mesh, flat plate SOFC cell, anode side metal net, lower seal glass and lower metal connecting plate, wherein, the full battery that flat plate SOFC cell is 1000-8300 μm of thickness, wherein anode support is with a thickness of 1000-8000 μm, active anode is with a thickness of 5-100 μm, electrolyte thickness is 5-80 μm, 10-150 μm of cathode thickness；The thin metal function plate that metal connecting plate is 500-1000 μm of thickness.The utility model can significantly improve the ability of SOFC battery resistance to mechanical load, the deformation of heat resistanceheat resistant mismatch, anti-oxidant reduction deformation, greatly improve the service life of battery and pile, and improve stock utilization and pile energy density, mitigate electric pile unit weight.
Description
Technical field
The utility model relates to solid oxide fuel cell technical field more particularly to a kind of asymmetric flat structures
The electric pile structure of high-temperature solid fuel cell.
Background technique
Solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) is that one kind can be directly by chemical energy
It is converted into the energy conversion device of electric energy.Its basic structure includes the electrolyte layer of porous anode, porous cathode and densification.?
It is passed through fuel in anode, while after cathode is passed through oxidant gas, electrochemistry can occur at electrolyte and electrode three phase boundary
Reaction generates electronics, and electronics will be produced electricl energy and thermal energy by external circuit forming circuit.SOFC has energy conversion efficiency
Height, it is environmentally friendly the advantages that, therefore receive the extensive concern of researchers.Currently, the commercialization of SOFC has become the world
The hot topic of research.Bloom Energy company, the U.S. has researched and produced hundred multikilowatt distributed generation systems, the public affairs such as Japanese ToTo
Department has researched and produced the domestic combined heat and power system of multikilowatt.
The patent document of notification number CN101399352B proposes a kind of plate SOFC structure of anode electrode support type, should
Structure is easily prepared, while having higher battery performance.Notification number is the patent document of CN103296301B above-mentioned novel
A kind of ceramic electrolyte battery pile of flat pole support is proposed in electrode-supported structure basis.
Although a kind of ceramic electrical for novel flat-plate type electrode supporting that the patent document of notification number CN103296301B proposes
Xie Zhi electricity Chi Dui is a kind of excellent SOFC battery pile structure, it is contemplated that electrode-supported SOFC slab construction is in reality
Anti-oxidant reduction bending, the ability of resistance to mechanical load are weaker in operation, therefore it is usually necessary to use more thick and heavy metal connecting plates
Mechanically limit its deformation.This will will lead to stock utilization and the decline of pile energy density, while electric pile unit weight is instead
It will increase, and battery is easy to appear crackle and destroys.This is because supporting layer, the electrode of the above-mentioned plate SOFC of anode-supported
It is all very thin with electrolyte, since there are a degree of thermal expansion coefficients to lose for the metal material and the ceramic material of battery of connecting plate
Match, is easy to cause battery material to crack due to thermal stress in operational process, causes battery and pile service life short.
Summary of the invention
The asymmetric flat structure high temperature that the main purpose of the utility model is to provide a kind of more efficient and long life is solid
The electric pile structure of state fuel cell can significantly improve SOFC electricity firstly, the technical solution optimizes supporting anodes structure size
Pond resistance to mechanical load, the ability of the deformation of heat resistanceheat resistant mismatch, anti-oxidant reduction deformation, greatly improved the service life of battery and pile；Its
It is secondary, the thickness of metal connecting plate can be reduced while increasing anode support thickness, to optimize metal connecting plate
Structure size improves stock utilization and pile energy density, alleviates electric pile unit weight.
The technical solution of the utility model is as follows:
A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell, including multiple stackings and concatenated electricity
Pool unit, each battery unit respectively include: upper metal connecting plate, upper seal glass, cathode side metal mesh, plate SOFC electricity
Pond, anode side metal net, lower seal glass and lower metal connecting plate, wherein upper seal glass, lower seal glass are hollow knot
Structure, cathode side metal mesh, anode side metal net are entrenched in seal glass, in lower seal glass respectively；Upper metal connecting plate with
Flat plate SOFC cell is fitted closely by upper seal glass, and lower metal connecting plate and flat plate SOFC cell are tight by lower seal glass
Closely connected conjunction；Two adjacent battery units share same metal connecting plate: under the lower metal connecting plate of a upper battery unit is
The upper metal connecting plate of one battery unit；Flat plate SOFC cell is 1000-8300 μm of thickness of full battery, wherein anode-supported
Body thickness is 1000-8000 μm, and active anode is with a thickness of 5-100 μm, and electrolyte thickness is 5-80 μm, cathode thickness 10-150 μ
m；The thin metal function plate that metal connecting plate is 500-1000 μm of thickness.
As the further improvement of utility model, each metal connecting plate includes two sides: towards flat plate SOFC cell
Anode anode sides, towards flat plate SOFC cell cathode cathode side；In same battery unit, upper metal connecting plate
Cathode side and cathode side metal mesh between form air duct, the anode sides and anode side metal net of lower metal connecting plate
Between form fuel channel.
As the further improvement of utility model, anode sides, the cathode side of same metal connecting plate are by multiple
The rectangle square array structure that boss is formed forms groove between adjacent lands；Same metal connecting plate be surrounded by air intake,
Air outlet slit, fuel inlet, fuel outlet, and air intake, air outlet slit are opposite, fuel inlet, fuel outlet are opposite；Anode
The rectangle square matrix and air intake, air outlet slit connection of side；The rectangle square matrix and fuel inlet of cathode side, fuel outlet join
It is logical.
As the further improvement of utility model, the air intake of same metal connecting plate, the line of air outlet slit and combustion
Expect entrance, the line of fuel outlet is mutually perpendicular to.
As the further improvement of utility model, the boss of same side is that spherical boss, square boss, column are convex
One of platform, trapezoidal cube boss；The projection shape of two sides of same metal connecting plate is identical or not identical.
As the further improvement of utility model, the upper metal connecting plate of same battery unit, lower metal connecting plate it is convex
Platform shape is identical or not identical.
As the further improvement of utility model, cathode side metal mesh, anode side metal net are wavelike structure.
Based on the above-mentioned whole technical solutions being previously mentioned, compared with prior art, the utility model:
(1) it creatively proposes for anode support thickness to be significantly increased from 100-900 μm to 1000-8000 μm to mention
The mechanical strength of high battery, electrode and electrolyte thickness remain unchanged, and find that the technical solution can be significant by calculating to verify
The ability of SOFC battery resistance to mechanical load, the deformation of heat resistanceheat resistant mismatch, anti-oxidant reduction deformation is improved, substantially the longevity of battery and pile
Life.
(2) it will increase the resistance of fuel transmitting after thickening due to anode support, the utility model is increasing anode
While supporting layer thickness, its porosity is increased to 40% or more from traditional 20% or so to guarantee the smooth transmitting of fuel.
(3) after anode support thickens, guarantee SOFC battery resistance to mechanical load, the deformation of heat resistanceheat resistant mismatch, it is anti-oxidant also
Under the premise of the ability that original shape becomes, 500-1000 μm of thin metal connecting plate can be used, therefore optimize metal connecting plate
Structure size alleviates electric pile unit weight to improve stock utilization and pile energy density.
Detailed description of the invention
Fig. 1 is the schematic diagram of the battery pile structure unit of the utility model.
Fig. 2-3 is the top view and sectional view of the cube boss metal connecting plate of the utility model.
Fig. 4-5 is the top view and sectional view of the vertical cylinder boss metal connecting plate of the utility model.
Fig. 6-7 is the top view and sectional view of the Horizontal cylinder body boss metal connecting plate of the utility model.
Fig. 8-9 is the top view and sectional view of the prism boss metal connecting plate of the utility model.
Figure 10 is maximum total displacement with support thickness of electrode h change curve s1.
Figure 11 is that battery maximum total displacement travelling with the exhibits on an exhibition tour to characteristic size L_x and anode thickness h1 changes cloud after a reduction-oxidation
Figure.
Figure 12 is that battery maximum total displacement (area≤1mm) travelling with the exhibits on an exhibition tour is thick to characteristic size L_x and anode after a reduction-oxidation
It spends h1 and changes cloud atlas.
Figure 13 is that the travelling with the exhibits on an exhibition tour of battery maximum stress to characteristic size L_x and anode thickness h1 changes cloud after a reduction-oxidation
Figure.
Figure 14 be after a reduction-oxidation the maximum total displacement of battery (120mm*120mm) with anode thickness h1 change curve.
Figure 15 be after a reduction-oxidation battery (120mm*120mm) maximum stress with anode thickness h1 change curve.
Figure 16 is that the maximum total displacement of battery (120mm*120mm) is thick with connector thickness h c and anode after a reduction-oxidation
It spends h1 and changes cloud atlas.
Figure 17 be after a reduction-oxidation battery (120mm*120mm) maximum stress with connector thickness h c and anode thickness
H1 changes cloud atlas.
Appended drawing reference: the upper metal connecting plate of 1-, the upper seal glass of 2-, 3- cathode side metal mesh, 4- flat plate SOFC cell, 5-
Anode side metal net, seal glass under 6-, metal connecting plate under 7-, 8- boss, 9- air intake, 10- air outlet slit, 11- combustion
Expect entrance, 12- fuel outlet.
Specific embodiment
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, with reference to the accompanying drawing and specifically
The present invention will be further described for embodiment, but claimed range be not limited to it is described, in addition, it should also be understood that, reading
After the content that the utility model is lectured, the modification that those skilled in the art make the utility model equally falls within the application
The appended claims limited range.
Embodiment 1
A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell, including multiple stackings and concatenated electricity
Pool unit, as shown in Figure 1, each battery unit respectively include: upper metal connecting plate 1, upper seal glass 2, cathode side metal
Net 3, flat plate SOFC cell 4, anode side metal net 5, lower seal glass 6 and lower metal connecting plate 7, wherein upper seal glass 2,
Lower seal glass 6 is hollow structure, cathode side metal mesh 3, anode side metal net 5 be entrenched in respectively seal glass 1, under it is close
It seals in glass 6.In the present invention, cathode side metal mesh 3, anode side metal net 5 make metal to provide flexible contact
Connecting plate 1, lower metal connecting plate 7 can come into full contact with flat plate SOFC cell 4 respectively.
And upper seal glass 2, lower seal glass 6 are to provide connection function, it is as follows: upper metal connecting plate 1 and plate
SOFC battery 4 is fitted closely by upper seal glass 2, and lower metal connecting plate 7 passes through lower seal glass 6 with flat plate SOFC cell 4
It fits closely.
Two adjacent battery units share same metal connecting plate, it may be assumed that the lower metal connecting plate 7 of a upper battery unit
For the upper metal connecting plate 1 of next battery unit.
Each metal connecting plate includes two sides: towards the anode sides of the anode of flat plate SOFC cell, towards plate
The cathode side of the cathode of SOFC battery.That is: in same battery unit, cathode side and the cathode side gold of upper metal connecting plate 1
Belong to and form air duct between net 3, forms fuel channel between the anode sides and anode side metal net 5 of lower metal connecting plate 7.
Above-mentioned technical proposal constitutes the basic electric pile structure of flat structure high-temperature solid fuel cell, in addition, for
For the utility model most importantly:
(1) the utility model optimizes the structure size of supporting anodes: flat plate SOFC cell 4 is 1000-8300 μm of thickness
Full battery, wherein anode support is with a thickness of 1000-8000 μm, and active anode is with a thickness of 5-100 μm, electrolyte thickness 5-
80 μm, 10-150 μm of cathode thickness.
On the basis of optimizing the structure size of supporting anodes, the optimization of the important point of another of the utility model
The structure size of metal connecting plate, respectively include:
(2) way for limiting cell deformation using more thick and heavy metal connecting plate compared to the prior art, reduces gold
Belong to the thickness of connecting plate: the thin metal that metal connecting plate (upper metal connecting plate and lower metal connecting plate) is 500-1000 μm of thickness
Feature board.
(3) the utility model also optimizes the structure of metal connecting plate.As shown in figs. 2-9:
Anode sides, the cathode side of same metal connecting plate are the rectangle square array structure formed by multiple boss 8, together
The boss of one side is one of spherical boss, square boss, cylindrical boss, trapezoidal cube boss；Adjacent lands it
Between form groove, groove can circulate for air, fuel.
In order to enable air, fuel to be freely accessible to each battery unit, the air that is surrounded by of same metal connecting plate enters
Mouth 9, air outlet slit 10, fuel inlet 11, fuel outlet 12, and air intake 9, air outlet slit are with respect to 10, fuel inlet 11, combustion
Material outlet 12 is opposite；The rectangle square matrix of anode sides passes through groove and air intake 9,10 connection of air outlet slit；Cathode side
Rectangle square matrix passes through groove and fuel inlet 11,12 connection of fuel outlet；Air intake 9, the air of same metal connecting plate go out
The line of the line and fuel inlet 11, fuel outlet 12 of mouth 10 is mutually perpendicular to.
The projection shape of two sides of same metal connecting plate can be identical or not identical；Same battery unit it is upper
Metal connecting plate 1, the projection shape of lower metal connecting plate 7 are identical or not identical, as long as it can ensure that being formed satisfactory
Air, fuel channel.
Other than 3 points, structure optimization can also be carried out to metal mesh, by cathode side metal mesh, anode side metal in addition to above
Wavelike structure is selected as in network optimization, to improve the flexibility of metal mesh, and guarantee air duct, fuel channel it is unimpeded.
Embodiment 2
The present embodiment is by the electricity based on a kind of asymmetry flat structure high-temperature solid fuel cell provided by embodiment 1
Pile structure provides a series of theoretical calculation and test data.
Figure 10 be exhibition to the individual flat plate SOFC cell 4 having a size of 30mm*38mm with support electrode (anode) it is thick
The variation of degree, the maximum displacement curve after a reduction-oxidation.For figure explanation when supporting electrode sufficiently thick, simple battery is certainly
Body has been enough to resist bending deformation brought by reduction-oxidation process.
Figure 11 to Figure 17 illustrates the calculated result based on the utility model.
Wherein Figure 11 be after reduction-oxidation of simulation calculation battery maximum total displacement travelling with the exhibits on an exhibition tour to characteristic size L_x and anode
Thickness h 1 changes cloud atlas, according to this as a result, screening the size results that maximum total displacement is no more than the region 1mm, as shown in figure 12.By
The figure result can determine for it is different open up to size flat-panel type SOFC can make a reduction-oxidation after maximum distortion be no more than 1mm
The minimum thickness of supporting anodes.Simultaneously in the corresponding expression Stress Map of Figure 13.Conclusion can be obtained by simulation result: for plate
Type fuel cell, as long as choosing the enough battery structures of anode thickness, battery material structure itself has been enough largely
Resist reduction-oxidation deformation.
Figure 14 and Figure 15 specifically illustrates battery and opens up metal connecting plate-battery sandwich when to having a size of 120mm*120mm
Structure after a reduction-oxidation deformation with anode thickness h1 relationship.Two figures respectively illustrate fitting with anode thickness
Work as increase, battery resists the reinforcement of the ability of reduction-oxidation deformation.It is embodied in when anode thickness increases, electric pile unit is total
Body maximum displacement is gradually reduced and tends to be steady, also, the maximum displacement value of the higher metal connecting plate of modulus is significantly less than electricity
Pond maximum displacement value；And the stress level of electric pile unit maintains a relatively low level always in the process, and metal connects
Fishplate bar maximum stress is significantly less than battery maximum stress.
As supplementary explanation, Figure 16 and Figure 17 give the influence that metal connection plate thickness deforms reduction-oxidation.Two figures
Illustrate under the same terms, influence of the metal connecting plate thickness h c to deformation is slight, and hc and maximum total displacement are positively correlated in slight, hc
It is almost unrelated with maximum stress.
Theory support and test data based on embodiment 2 show
(1) the utility model is retaining original solid-state structure functional attributes by the structure size of change anode support
Under the premise of, thermal mismatching resistant to high temperatures deformation, resistance to mechanical load-carrying ability and the anti-oxidant reduction of original structure can be significantly improved
Ability improves the pile service life.
(2) above-mentioned thermal mismatching deformation resistant to high temperatures, resistance to mechanical load are sufficient in the thickness that ensure that anode support simultaneously
Under the premise of lotus ability and anti-oxidant reducing power, reduces the thickness of metal connecting plate and the structure of metal connecting plate is carried out
Optimization, the reduction of metal connecting plate materials will save the quality and material consumption of electric pile unit part, to improve material use
Rate and pile energy density, alleviate electric pile unit weight, have obtained the electric pile structure of optimization, lighting.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (7)
1. a kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell, including multiple stackings and concatenated battery
Unit, which is characterized in that each battery unit respectively include: upper metal connecting plate, cathode side metal mesh, is put down at upper seal glass
Plate SOFC battery, anode side metal net, lower seal glass and lower metal connecting plate, wherein upper seal glass, lower seal glass are equal
For hollow structure, cathode side metal mesh, anode side metal net are entrenched in seal glass, in lower seal glass respectively；Upper metal
Connecting plate and flat plate SOFC cell are fitted closely by upper seal glass, and lower metal connecting plate and flat plate SOFC cell are close under
Envelope glass fits closely；Two adjacent battery units share same metal connecting plate: the lower metal of a upper battery unit connects
Fishplate bar is the upper metal connecting plate of next battery unit；The full battery that flat plate SOFC cell is 1000-8300 μm of thickness, wherein
Anode support is with a thickness of 1000-8000 μm, and active anode is with a thickness of 5-100 μm, and electrolyte thickness is 5-80 μm, cathode thickness
10-150μm；The thin metal function plate that metal connecting plate is 500-1000 μm of thickness.
2. the electric pile structure of asymmetry flat structure high-temperature solid fuel cell according to claim 1, feature exist
In each metal connecting plate includes two sides: towards the anode sides of the anode of flat plate SOFC cell, towards plate SOFC electricity
The cathode side of the cathode in pond；In same battery unit, shape between the cathode side and cathode side metal mesh of upper metal connecting plate
At air duct, fuel channel is formed between the anode sides and anode side metal net of lower metal connecting plate.
3. the electric pile structure of asymmetry flat structure high-temperature solid fuel cell according to claim 2, feature exist
In anode sides, the cathode side of same metal connecting plate are the rectangle square array structure formed by multiple boss, adjacent lands
Between form groove；Same metal connecting plate is surrounded by air intake, air outlet slit, fuel inlet, fuel outlet, and empty
Gas entrance, air outlet slit be opposite, fuel inlet, fuel outlet are opposite；The rectangle square matrix of anode sides goes out with air intake, air
Mouth connection；The rectangle square matrix and fuel inlet, fuel outlet connection of cathode side.
4. the electric pile structure of asymmetry flat structure high-temperature solid fuel cell according to claim 3, feature exist
In the air intake of same metal connecting plate, the line of the line and fuel inlet, fuel outlet of air outlet slit are mutually perpendicular to.
5. the electric pile structure of asymmetry flat structure high-temperature solid fuel cell according to claim 3, feature exist
In the boss of same side is one of cube boss, vertical cylinder boss, Horizontal cylinder body boss, prism boss；
The projection shape of two sides of same metal connecting plate is identical or not identical.
6. according to the electric pile structure of the described in any item asymmetric flat structure high-temperature solid fuel cells of claim 3-5,
It is characterized in that, the projection shape of the upper metal connecting plate of same battery unit, lower metal connecting plate is identical or not identical.
7. the electric pile structure of asymmetry flat structure high-temperature solid fuel cell according to claim 1, feature exist
In cathode side metal mesh, anode side metal net are wavelike structure.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109830732A (en) * | 2019-01-25 | 2019-05-31 | 哈尔滨工业大学（深圳） | A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109830732A (en) * | 2019-01-25 | 2019-05-31 | 哈尔滨工业大学（深圳） | A kind of electric pile structure of asymmetry flat structure high-temperature solid fuel cell |
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