CN104466210B - Fuel cell interior humidity-current density distribution measurement male tab - Google Patents
Fuel cell interior humidity-current density distribution measurement male tab Download PDFInfo
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- CN104466210B CN104466210B CN201410637375.9A CN201410637375A CN104466210B CN 104466210 B CN104466210 B CN 104466210B CN 201410637375 A CN201410637375 A CN 201410637375A CN 104466210 B CN104466210 B CN 104466210B
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- electric current
- current density
- humidity
- layer
- fuel cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04492—Humidity; Ambient humidity; Water content
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04537—Electric variables
- H01M8/04574—Current
- H01M8/04582—Current of the individual fuel cell
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a fuel cell interior humidity-current density distribution measurement male tab, and the fuel cell interior humidity-current density distribution measurement male tab is a device for measuring fuel cell interior humidity distribution and electric current distribution, wherein a conductive substrate is provided with a leak and a tendon which correspond to a fuel cell flow field plate runner and a ridge, and a humidity-electric current density jointed measurement sensor is arranged on the tendon; the humidity-electric current density measurement sensor is manufactured by a vacuum evaporation coating method, and comprises seven layers of thin films. The vacuum evaporation coating method is adopted for manufacturing a leading wire used for transmitting an electric signal, and the leading wire extends to the edge of a flow field plate and then is enlarged to form a pin, so that the leading wire is conveniently connected with external data acquisition equipment. Synchronous on-line measurement of fuel cell interior humidity distribution and current density distribution is realized, the fuel cell interior humidity-current density distribution measurement male tab is independently arranged on a fuel cell, special remolding for the structure of the fuel cell is not needed, the fuel cell interior humidity-current density distribution measurement male tab is simple in structure, convenient in manufacturing and wide in application range, and is adaptive to a fuel cell flow field plate with a parallel runner, a snakelike runner, a stagger-type runner and other runner shapes.
Description
Technical field
The present invention relates to a kind of fuel battery inside humidity-electric current distribution and measure inserted sheet, belong to
In fuel cell detection technique field.
Background technology
Along with the carrying out of fuel battery inside electrochemical reaction, its interior humidity and local current are close
Degree also can change.At initial period, PEM is not wetted, have impact on proton and exists
Transmission in PEM, thus need to increase the humidity of reacting gas, with abundant moistening matter
Proton exchange；And along with the increase of the time of operation, will hinder if fuel battery inside humidity is too high
Fuel battery inside is hindered to condense the discharge of water；Condense water number also fuel battery inside can be connect
Resistance of getting an electric shock produces impact, thus causes local current densities to change；By to electric current density
Monitoring, it is also possible to reflect the situation of change of fuel battery inside gas concentration.
By measuring fuel battery inside humidity and the measurement of electric current distribution, contribute to fuel
The regulation of battery operation operating mode, so that fuel cell keeps high-performance to run.
The method measuring electric current density has sub-battery method, membrane electrode split-run, magnet ring group method etc.,
Mostly need the structure of fuel cell is transformed, make complexity；The measurement of humidity can be passed through
Implant business humidity sensor at fuel battery inside to measure, it also requires to fuel cell
Flow-field plate transform, complex procedures, cost is high；Meanwhile, respectively to fuel battery inside
Humidity and electric current density measure, in addition it is also necessary to fuel cell is carried out being dismounted for multiple times, and this also destroys
The accuracy of fuel cell measurement data.
If the present invention is layout humidity-electric current density translocation sensor, structure on conductive substrate
Humidity-electric current distribution is become to measure inserted sheet, it is achieved that to synchronize on-line measurement fuel battery inside
Moisture distribution and electric current distribution；This measurement apparatus is independent of tested fuel cell, it is not necessary to right
Fuel cell carries out structure of modification, decreases the dismounting number of times to fuel cell, thus ensure that
Stablizing of fuel battery performance.
Summary of the invention
It is an object of the invention to provide one and can synchronize on-line measurement fuel battery inside humidity
Distribution and the device of electric current distribution.This device can be installed on fuel cell as individual member
Inside, simple in construction, easy to make, it is not necessary to fuel battery inside structure is carried out special transformation,
Simplify fuel battery inside humidity and the step of electric current distribution measurement.
For realizing above-mentioned technical purpose, technical scheme is as follows: fuel battery inside is wet
Degree-electric current distribution measure inserted sheet, including conductive substrate 1, crack 2, muscle 3, humidity-
Electric current density translocation sensor 4, lead-in wire 5, hole 7, location；Described crack 2, muscle 3 are arranged on
On conductive substrate 1, muscle 3 between two adjacent cracks 2, the shape of crack 2 and muscle 3 and
Size is identical with the shape and size of fuel cell flow field board upper runner and ridge respectively, crack 2 He
The position of muscle 3 is corresponding with fuel cell flow field board runner and ridge respectively；Described humidity-electric current
Density translocation sensor 4 is arranged on muscle 3；One end of lead-in wire 5 and humidity-electric current density connection
The wiring exit surveying sensor 4 connects, and the other end extends to the edge of conductive substrate 1 and puts
Big formation pin 6；Hole 7, location is symmetrical, be uniformly arranged on conductive substrate 1 surrounding, in order to incite somebody to action
Conductive substrate 1 is fixed on fuel cell flow field board；When fuel cell assembles, in fuel cell
Portion's humidity-electric current distribution is measured inserted sheet and is arranged in fuel cell flow field board and membrane electrode
Between, its be provided with humidity-electric current density translocation sensor 4 facing to membrane electrode side and therewith
It is in close contact.
Described humidity-electric current density translocation sensor 4 includes humicap hygrometric unit and electric current
Current unit surveyed by density metal coating, uses vacuum evaporation coating film method to make, thin including seven layers
Film: ground floor is the evaporation silicon dioxide insulating layer that thickness is 0.08-0.12 μm 15 on muscle 3,
The second layer is the bottom electrode aluminum that thickness the is 1.0-1.2 μm plating of evaporation on silicon dioxide insulating layer 15
Layer 16, third layer is at the height that bottom electrode aluminium coat 16 thick layer applied over is 0.5-1 μm
Molecularly Imprinted Polymer humidity-sensitive medium layer 17, the 4th layer is at high molecular polymer humidity-sensitive medium layer 17
The upper electrode aluminium coat 18 that thickness is 1.0-1.2 μm of top evaporation；Described upper electrode aluminium coat 18,
High molecular polymer humidity-sensitive medium layer 17 and bottom electrode aluminium coat 16 constitute humicap, first
End for humicap wiring exit 31, wherein go up electrode aluminium coat 18 be shaped as snakelike；
Layer 5 is that the electric current density that thickness is 1.5-2.0 μm of evaporation is surveyed on silicon dioxide insulating layer 15
Amount copper coating 19, layer 6 is to measure the thickness of evaporation on copper coating 19 in electric current density to be
The electric current density of 0.1-0.12 μm measures gold plate 20；Described electric current density measures copper coating 19
Overlapped with electric current density measurement gold plate 20, constitute electric current density and measure the coat of metal
29, head end is that electric current density measures coat of metal wiring exit 30；Layer 7 is in wet sensitive
The silicon dioxide that thickness the is 0.08-0.12 μm protection of the top evaporation of electrode aluminium coat 18 on electric capacity
Layer 21.
Described humicap wiring exit 31 and electric current density are measured coat of metal wiring and are drawn
End 30 is all fabricated to circle, and is all arranged in the same side of silicon dioxide insulating layer 15.
The shape of described conductive substrate 1 can be fabricated to square, circular, polygon, trapezoidal, three
Dihedral, irregular figure.
On described conductive substrate 1, the shape of crack 2 can be snakelike crack, parallel crack, poroid
Crack, staggered crack.
The coat of metal material of described humicap upper/lower electrode, also can be selected for gold, copper, platinum
Belong to and replacing.
The shape of described upper electrode aluminium coat 18 is to set according to the shape of mask, its shape
Shape can be also zigzag, pectination.
Described electric current density measures the shape of copper coating 19 and electric current density measurement gold plate 20
Set according to the shape of mask, its shape can be rectangle, ellipse, circle, triangle,
Trapezoidal, irregular figure.
Described electric current density measures coat of metal wiring exit 30 and humicap wiring is drawn
The shape of end 31 can be also ellipse, rectangle, trapezoidal, triangle, and phase can be distinguished in its position
To the both sides being arranged in silicon dioxide insulating layer 15.
The width of described lead-in wire 5 is 0.1-0.2mm, and the edge at conductive substrate 1 puts
Greatly, pin 6 is formed.
Lead-in wire 5 is that the four-level membrane using vacuum evaporation coating film method evaporation is constituted: ground floor is
The lead-in wire silicon dioxide insulating layer 32 of thick 0.08-0.12 μm, the second layer is thick 0.1-0.12 μm
Lead-in wire copper coating 33, third layer is the lead-in wire gold plate 34 of thick 0.1-0.12 μm, last layer
Lead-in wire silicon dioxide layer of protection 35 for thick 0.05-0.1 μm；Wherein, do not steam at pin 6
Plating lead-in wire silicon dioxide layer of protection.
Compared with prior art, the present invention has the advantages that.
The present invention be disposed with on conductive substrate with tested fuel cell flow field board upper runner and
Crack that ridge is corresponding and muscle, and if be disposed with humidity-electric current density translocation sensing on muscle
Device, thus constitutes fuel battery inside humidity-electric current distribution and measures inserted sheet；This invention fills
Putting does not affects reactant and spreads to membrane electrode direction, can realize in fuel cell operation
To fuel battery inside humidity and the synchro measure of electric current distribution；Assemble with fuel cell
Time, this invention device is arranged in the middle of fuel cell flow field board and membrane electrode, its structure independent of
Tested fuel cell, it is not necessary to it is special to carry out other structures such as fuel cell flow field board or pole plate
Transformation, reduces and is implanted impact on fuel battery performance by measurement apparatus；Meanwhile, this dress
Put simple in construction, easy to make, applied widely, can adapt to parallel fluid channels, serpentine flow path,
Staggered runner or the fuel cell flow field board of other abnormal flow road shape.
Accompanying drawing explanation
Fig. 1 is that fuel battery inside humidity-parallel crack of electric current distribution measures inserted sheet subjectivity
Schematic diagram；
Fig. 2 is that fuel battery inside humidity-electric current distribution measures single humidity-electricity on inserted sheet
The subjective schematic diagram of current density translocation sensor；
Fig. 3 is that fuel battery inside humidity-electric current distribution measures single humidity-electricity on inserted sheet
The Making programme figure of current density translocation sensor；
Fig. 4 is that on fuel battery inside humidity-electric current distribution measurement inserted sheet, humidity-electric current is close
The cross section subjectivity schematic diagram of degree translocation sensor lead；
Fig. 5 is that fuel battery inside humidity-electric current distribution interlocks that to measure inserted sheet subjective for crack
Schematic diagram；
Fig. 6 is that the snakelike single crack of fuel battery inside humidity-electric current distribution measures inserted sheet master
See schematic diagram；
Fig. 7 is that fuel battery inside humidity-snakelike pair of electric current distribution crack measures inserted sheet master
See schematic diagram；
In figure, 1, conductive substrate, 2, crack, 3, muscle, 4, humidity-electric current density translocation
Sensor, 5, lead-in wire, 6, pin, 7, hole, location；
8-14 is humidity-electric current density translocation sensor each layer mask: 8, silicon dioxide insulating layer
Mask, 9, bottom electrode aluminium coat mask, 10, high molecular polymer humidity-sensitive medium layer mask,
11, upper electrode aluminium coat mask, 12, electric current density measure copper coating mask, 13, electric current close
Degree measures gold plate mask, and 14, silicon dioxide layer of protection mask；
15-21 is the humidity according to mask fabrication-electric current density translocation sensor each film layer: 15,
Silicon dioxide insulating layer, 16, bottom electrode aluminium coat, 17, high molecular polymer humidity-sensitive medium layer,
18, upper electrode aluminium coat, 19, electric current density measure copper coating, 20, electric current density measure gold
Coating, 21, silicon dioxide layer of protection；
22-28 is the making step of humidity-electric current density translocation sensor: 22, step one, 23,
Step 2,24, step 3,25, step 4,26, step 5,27, step 6,28,
Step 7；
29, electric current density measure the coat of metal, 30, electric current density measure coat of metal wiring draw
Go out end, 31, humicap wiring exit；
32, lead-in wire silicon dioxide insulating layer, 33, lead-in wire copper coating, 34, lead-in wire gold plate,
35, lead-in wire silicon dioxide layer of protection.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, the fuel battery inside humidity of the present invention-electric current distribution is measured
Inserted sheet, including conductive substrate 1, crack 2, muscle 3, humidity-electric current density translocation sensor 4,
Lead-in wire 5, pin 6, hole 7, location；Crack 2 and muscle 3 are arranged on conductive substrate 1, its
With the runner on tested fuel cell flow field board and ridge in shape and size identical, position is mutual
Correspondence, is disposed with humidity-electric current density translocation sensor 4 on muscle 3；Go between 5 one end with wet
Degree-electric current density translocation sensor 4 is connected, and the other end extends to the edge of conductive substrate 1,
For transmitting the signal of telecommunication that humidity-electric current density translocation sensor 4 produces；Pin 6 is arranged in
The edge of conductive substrate 1 is also connected with lead-in wire 5；Surrounding at conductive substrate is disposed with hole, location
7, facilitate this humidity-electric current distribution measure the location of inserted sheet and fuel cell flow field board and consolidate
Fixed.For the mating shapes with tested fuel cell, the shape of conductive substrate 1 can the side of being fabricated to
Shape, circle, polygon, trapezoidal, triangle etc..During measurement, this measurement inserted sheet is implanted fuel
Between cell flow field plate and membrane electrode assembly, it is fixed in fuel cell flow by hole 7, location
On field plate, it is disposed with the electric facing to fuel cell membranes of humidity-electric current density translocation sensor 4
Assembly direction, pole, and be in close contact with membrane electrode assembly, on crack 2 and fuel cell flow field board
Runner corresponding, muscle 3 is corresponding with the ridge on fuel cell flow field board so that measure inserted sheet
Implantation do not affect the reactant diffusion to membrane electrode direction.Meanwhile, it is arranged on measurement inserted sheet
Humidity-electric current density translocation sensor 4 humidity and the electric current density of fuel battery inside are entered
Row is measured, and the signal of telecommunication of generation is transferred to pin 6 by lead-in wire 5, the number of data acquisition equipment
It is connected with pin 6 according to input and can collect the signal of telecommunication measuring inserted sheet output, and calculate point
Separate out fuel battery inside moisture distribution and electric current distribution.
Shown in reference Fig. 2, fuel battery inside humidity-electric current density translocation of the present invention
Sensor (4) includes that humicap hygrometric unit and electric current density are measured the coat of metal and surveyed electric current
Unit, uses vacuum evaporation coating film method to make, including seven layer films: ground floor exists for evaporation
The titanium dioxide that thickness is 0.08-0.12 μm on muscle 3 between the adjacent crack 2 of conductive substrate 1 liang
Silicon insulating barrier 15, the second layer is that the thickness of evaporation is 1.0-1.2 μm on silicon dioxide insulating layer 15
Bottom electrode aluminium coat 16, third layer is at bottom electrode aluminium coat 16 thick layer applied over to be
The high molecular polymer humidity-sensitive medium layer 17 of 0.5-1 μm, the 4th layer is in high molecular polymer sense
The upper electrode aluminium coat 18 that thickness is 1.0-1.2 μm of evaporation, layer 5 above humid medium layer 17
Copper plating is measured for the electric current density that thickness is 1.5-2.0 μm of evaporation on silicon dioxide insulating layer 15
Layer 19, layer 6 is that the thickness of evaporation is 0.1-0.12 μm on electric current density measurement copper coating 19
Electric current density measure gold plate 20, layer 7 is electrode aluminium coat (18) in humicap
Top evaporation the silicon dioxide layer of protection that thickness is 0.08-0.12 μm 21.
Fig. 3 is the Making programme figure of single humidity-electric current density translocation sensor: 8-14 is wet
Degree-electric current density translocation sensor each layer mask, 15-21 is the humidity-electricity according to mask fabrication
Current density translocation sensor each film layer, 22-28 is the making of humidity-electric current density translocation sensor
Step.First on the muscle of conductive substrate, it is deposited with one layer two according to silicon dioxide insulating layer mask 8
Insulating layer of silicon oxide 15, as the dielectric substrate of sensor, fully insulate with conductive substrate,
Complete step one 22；Step 2 23 is according to bottom electrode aluminum on silicon dioxide insulating layer 15
Coating mask 9 is deposited with one layer of bottom electrode aluminium coat 16, and step 3 24 is according to high molecular polymerization
Thing humidity-sensitive medium layer mask 10 is at a bottom electrode aluminium coat 16 floor height Molecularly Imprinted Polymer applied over
Humidity-sensitive medium layer 17, step 4 25 is above high molecular polymer humidity-sensitive medium layer 17
It is deposited with one layer of upper electrode aluminium coat 18 according to upper electrode aluminium coat mask 11；Bottom electrode aluminium coat
16, high score polymer humidity-sensitive medium layer 17 and upper electrode aluminium coat 18 constitute humicap,
Achieve the measurement of humidity；It is by step 5 26 and step that electric current density measures the coat of metal
6 27 complete: step 5 26 is for measuring copper coating mask 12 at dioxy according to electric current density
Being deposited with a Lyer current density on SiClx insulating barrier 15 and measure copper coating 19, step 6 27 is root
Measure gold plate mask 13 according to electric current density on silicon dioxide insulating layer 15, be deposited with one layer of electric current
Density measure gold plate 20；Described electric current density measures copper coating 19 and electric current density measures gold
Coating 20 is overlapped, constitutes electric current density and measures the coat of metal 29, it is achieved that electric current is close
The measurement of degree；Finally, step 7 28 by electrode aluminium coat 18 upper in plating humicap
Root is deposited with layer of silicon dioxide protective layer 21 according to silicon dioxide layer of protection mask 14, to prevent
Humicap is disturbed by fuel cell internal current；Humidity-electric current it is made up of above step
Density translocation sensor, external measuring circuit and data acquisition equipment can realize fuel cell
Interior humidity and the synchro measure of electric current density.
Electrode and the metal-plated of bottom electrode in the humicap that step 2 23 and step 4 25 complete
Layer material also can be selected for other metal substitutes such as gold, copper, platinum, wherein, electrode in humicap
The shape of aluminium coat 18 not only can snakelike for shown in Fig. 3, can be also zigzag, pectination etc.
Other shapes.The electric current density that step 5 26 and step 6 27 complete measures copper coating 19 He
It is to set according to the shape of mask that electric current density measures the shape of gold plate 20, can be also
Other shapes such as rectangle, ellipse, circle, triangle, trapezoidal, irregular figure.
The head end of humicap is humicap wiring exit 31, and electric current density measures metal
The head end of coating is that electric current density measures coat of metal wiring exit 30, and it act as conveniently
It is connected with lead-in wire 5, carries out the conduction of the signal of telecommunication.Electric current density is measured coat of metal wiring and is drawn
The shape of end 30 and humicap wiring exit 31 not only can be for the shape shown in Fig. 3, also
Can be other shapes such as ellipse, rectangle, trapezoidal, triangle, its position can be arranged in two
The same side of insulating layer of silicon oxide 15, it is possible to the relative silicon dioxide insulating layer 15 that is arranged in
Both sides, i.e. when humicap wiring exit 31 is in the upside of silicon dioxide insulating layer 15,
Electric current density is measured coat of metal wiring exit 30 and is arranged in and humicap wiring exit
The opposite side of 31 relative silicon dioxide insulating layers 15, to facilitate sensor lead 5 in conduction
Layout on substrate.
Fig. 4 is the schematic cross-section of humidity-electric current density translocation sensor lead, lead-in wire 5
Width is 0.1-0.2mm, and the edge at conductive substrate 1 is amplified, and forms pin 6,
It is attached with external measuring circuit and equipment to facilitate.This lead-in wire is to use vacuum vapor plating
The four-level membrane of method evaporation is constituted: ground floor is the lead-in wire silicon dioxide of thick 0.08-0.12 μm
Insulating barrier 32, the second layer is the lead-in wire copper coating 33 of thick 0.1-0.12 μm, and third layer is thick
The lead-in wire gold plate 34 of 0.1-0.12 μm, last layer are the lead-in wire dioxy of thick 0.05-0.1 μm
SiClx protective layer 35；Wherein, at pin 6, lead-in wire silicon dioxide layer of protection it is not deposited with.
Fig. 5 is that fuel battery inside humidity-electric current distribution interlocks that to measure inserted sheet subjective for crack
Schematic diagram, crack 2 on its conductive substrate 1 and muscle 3 and the stream on staggered fluid flow on channel plate
Road and ridge are the most corresponding, and the muscle 3 between two adjacent cracks 2 is disposed with humidity-electric current density
Translocation sensor 4, one end of lead-in wire 5 is drawn with the wiring of humidity-electric current density translocation sensor 4
Going out end to connect, the other end extends to the outward flange of conductive substrate 1 and amplifies formation pin 6, uses
Transmission in humidity-electric current density translocation sensor 4 signal of telecommunication.
Fig. 6 is that the snakelike single crack of fuel battery inside humidity-electric current distribution measures inserted sheet master
See schematic diagram, crack 2 on its conductive substrate 1 and muscle 3 with on snakelike single channel flow field
Runner and ridge are the most corresponding, the muscle 3 between two adjacent cracks 2 are disposed with humidity-electric current close
Degree translocation sensor 4, one end of lead-in wire 5 and the wiring of humidity-electric current density translocation sensor 4
Exit connects, and the other end extends to the outward flange of conductive substrate 1 and amplifies formation pin 6,
Transmission for humidity-electric current density translocation sensor 4 signal of telecommunication.
Fig. 7 is that fuel battery inside humidity-snakelike pair of electric current distribution crack measures inserted sheet master
See schematic diagram, crack 2 on its conductive substrate 1 and muscle 3 with in snakelike dual pathways flow-field plate
Runner and ridge are the most corresponding, the muscle 3 between two adjacent cracks 2 are disposed with humidity-electric current close
Degree translocation sensor 4, one end of lead-in wire 5 and the wiring of humidity-electric current density translocation sensor 4
Exit connects, and the other end extends to the outward flange of conductive substrate 1 and amplifies formation pin 6,
Transmission for humidity-electric current density translocation sensor 4 signal of telecommunication.
Fuel battery inside humidity-the electric current distribution using the present invention measures inserted sheet, it is possible to
Realize easily synchronizing on-line measurement fuel battery inside humidity and the distribution situation of electric current density；
This measurement apparatus and tested fuel cell are independent, it is not necessary to it is special to carry out the structure of fuel cell
Transformation, simple in construction, easy to make, range is wide.
Claims (8)
1. fuel battery inside humidity-electric current distribution measures inserted sheet, including conductive substrate
(1), crack (2), muscle (3), humidity-electric current density translocation sensor (4), lead-in wire (5),
Hole, location (7)；Described crack (2), muscle (3) are arranged on conductive substrate (1), muscle (3)
Being positioned between two adjacent cracks (2), the shape and size of crack (2) and muscle (3) are respectively
Identical with the shape and size of fuel cell flow field board upper runner and ridge, crack (2) and muscle (3)
Position corresponding with fuel cell flow field board runner and ridge respectively；It is characterized in that: described wet
Degree-electric current density translocation sensor (4) is arranged on muscle (3)；Lead-in wire (5) one end with
The wiring exit of humidity-electric current density translocation sensor (4) connects, and the other end extends to lead
The edge of electric substrate (1) also amplifies formation pin (6)；Position hole (7) symmetry, uniformly set
Put in conductive substrate (1) surrounding, in order to conductive substrate (1) is fixed on fuel battery flow field
On plate；When fuel cell assembles, fuel battery inside humidity-electric current distribution measures inserted sheet
Being arranged in the middle of fuel cell flow field board and membrane electrode, it is provided with humidity-electric current density translocation
Sensor (4) facing to membrane electrode side intimate contact therewith；
Described humidity-electric current density translocation sensor (4) includes humicap hygrometric unit and electricity
The current density coat of metal surveys current unit, uses vacuum evaporation coating film method to make, including seven layers
Thin film: ground floor is the evaporation silicon dioxide insulator that thickness is 0.08-0.12 μm on muscle (3)
Layer (15), the second layer is that the thickness of evaporation is 1.0-1.2 μm on silicon dioxide insulating layer (15)
Bottom electrode aluminium coat (16), third layer is at bottom electrode aluminium coat (16) applied over
Thickness is high molecular polymer humidity-sensitive medium layer (17) of 0.5-1 μm, and the 4th layer is at high score
The upper electrode aluminum that thickness the is 1.0-1.2 μm plating of sub-polymer humidity-sensitive medium layer (17) top evaporation
Layer (18)；Described upper electrode aluminium coat (18), high molecular polymer humidity-sensitive medium layer (17)
Constituting humicap with bottom electrode aluminium coat (16), head end is humicap wiring exit
(31), wherein go up electrode aluminium coat (18) be shaped as snakelike；Layer 5 is in titanium dioxide
The electric current density that thickness is 1.5-2.0 μm of the upper evaporation of silicon insulating barrier (15) measures copper coating (19),
Layer 6 for measuring the electricity that thickness is 0.1-0.12 μm of the upper evaporation of copper coating (19) in electric current density
Current density measures gold plate (20)；Described electric current density measures copper coating (19) and electric current is close
It is overlapped that degree measures gold plate (20), constitutes electric current density and measures the coat of metal (29),
Head end is that electric current density measures coat of metal wiring exit (30)；Layer 7 is at wet sensitive electricity
In appearance, the silicon dioxide that thickness is 0.08-0.12 μm of the top evaporation of electrode aluminium coat (18) is protected
Sheath (21)；
Described humicap wiring exit (31) and electric current density are measured coat of metal wiring and are drawn
Go out end (30) and be all fabricated to circle, and be all arranged in the same of silicon dioxide insulating layer (15)
Side.
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: the shape of described conductive substrate (1) be fabricated to square, circular,
Trapezoidal, triangle or irregular figure.
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: on described conductive substrate (1), crack (2) is shaped as snakelike leakage
Seam, parallel crack, poroid crack or staggered crack.
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: the coat of metal material of described humicap upper/lower electrode, selection gold,
Copper or platinum.
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: the shape of described upper electrode aluminium coat (18) is the shape according to mask
Shape and set, it is shaped as zigzag or pectination.
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: described electric current density measures copper coating (19) and electric current density is measured
The shape of gold plate (20) is to set according to the shape of mask, and it is shaped as rectangle, ellipse
Circle, circle, triangle, trapezoidal or irregular figure.
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: described electric current density measure coat of metal wiring exit (30) and
Humicap wiring exit (31) be shaped as ellipse, rectangle, trapezoidal or triangle,
Its position respectively relative to the both sides being arranged in silicon dioxide insulating layer (15).
Fuel battery inside humidity the most according to claim 1-electric current distribution is measured
Inserted sheet, it is characterised in that: the width of described lead-in wire (5) is 0.1-0.2mm, at conductive substrate
(1) edge is amplified, and forms pin (6)；
Lead-in wire (5) is that the four-level membrane using vacuum evaporation coating film method evaporation is constituted: first
Layer is the lead-in wire silicon dioxide insulating layer (32) of thick 0.08-0.12 μm, and the second layer is thick
The lead-in wire copper coating (33) of 0.1-0.12 μm, third layer is the lead-in wire gold plating of thick 0.1-0.12 μm
Layer (34), last layer are the lead-in wire silicon dioxide layer of protection (35) of thick 0.05-0.1 μm；Its
In, it is not deposited with lead-in wire silicon dioxide layer of protection at pin (6) place.
Priority Applications (1)
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| CN110061269B (en) * | 2018-09-26 | 2021-03-02 | 南方科技大学 | Online measuring device for current density and gas pressure distribution in fuel cell stack |
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| CN1702897A (en) * | 2005-07-22 | 2005-11-30 | 北京工业大学 | Asymmetric interlaced flow passage double pole plate of proton exchange membrane fuel cell |
| CN101252198A (en) * | 2008-04-17 | 2008-08-27 | 上海交通大学 | Proton exchanging film fuel battery test platform |
| CN102945976A (en) * | 2012-11-06 | 2013-02-27 | 武汉理工大学 | Distributed fuel cell control system and control method |
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| JP2003203662A (en) * | 2001-12-28 | 2003-07-18 | Nissan Motor Co Ltd | Fuel cell vehicle |
| JP4214761B2 (en) * | 2002-01-31 | 2009-01-28 | 株式会社デンソー | Fuel cell system |
| JP4083652B2 (en) * | 2003-09-19 | 2008-04-30 | 本田技研工業株式会社 | Gas sensor control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1702897A (en) * | 2005-07-22 | 2005-11-30 | 北京工业大学 | Asymmetric interlaced flow passage double pole plate of proton exchange membrane fuel cell |
| CN101252198A (en) * | 2008-04-17 | 2008-08-27 | 上海交通大学 | Proton exchanging film fuel battery test platform |
| CN102945976A (en) * | 2012-11-06 | 2013-02-27 | 武汉理工大学 | Distributed fuel cell control system and control method |
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