CN102116679A - Insertion piece for measuring transient heat flow density distribution in fuel cell - Google Patents
Insertion piece for measuring transient heat flow density distribution in fuel cell Download PDFInfo
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- CN102116679A CN102116679A CN2011100405733A CN201110040573A CN102116679A CN 102116679 A CN102116679 A CN 102116679A CN 2011100405733 A CN2011100405733 A CN 2011100405733A CN 201110040573 A CN201110040573 A CN 201110040573A CN 102116679 A CN102116679 A CN 102116679A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention discloses an insertion piece for measuring heat flow density distribution in a fuel cell, which is a device for measuring the heat flow density distribution in the fuel cell. The insertion piece comprises a gold-plated stainless steel substrate, and leaks and ribs, which are in the same sizes, the same shapes and the corresponding positions with grooves and ridges on a flow field plate of the fuel cell to be measured, are arranged on the substrate. A thin film heat flow meter is arranged on the rib between the adjacent leaks or holes on the measuring insertion piece respectively, the vacuum film coating technology is adopted for vapor deposition of seven layers of thin films, leading-out wires of the thin film heat flow meters extend to the edge of the substrate by adopting the method of printing a circuit, and a standard wiring port connected with an external circuit is further formed. The measuring insertion piece is placed between the flow field plate of the fuel cell and a membrane electrode. The insertion piece for measuring the heat flow density distribution in the fuel cell is completely independent of a measured object, and the fuel cell does not need to be transformed; furthermore, as the placement position of the insertion piece is very near to the membrane electrode, the insertion piece can measure the real-time heat flow density distribution situation in the fuel cell.
Description
Technical field
The invention belongs to fuel battery inside transient heat flow Density Distribution and measure inserted sheet, relate to the measurement of fuel battery inside transient heat flow Density Distribution, particularly a kind of measurement mechanism of transient heat flow Density Distribution.
Background technology
Fuel cell is a kind of energy conversion device, and the chemical energy that it will be stored in the fuel directly is converted to electric energy, and conversion efficiency can reach 85%～90% in theory, is not subjected to the restriction of Carnot cycle.Because the generating efficiency height of fuel cell has reduced CO
2Discharge capacity, compare CO with traditional thermal motor
2Discharge rate can reduce 40%-60%.Studies show that, when a dolly uses with the hydrogen of gas renormalizing to the fuel cell of fuel without gasoline engine, its CO
2Discharge capacity to reduce about 72% comparatively speaking.Studies show that in recent years is the fuel cell of fuel with methyl alcohol, and its fuel availability is 1.76 times of gasoline engine.When the fuel of fuel cell was methyl alcohol, its reaction product was CO
2And water, be H and work as fuel
2The time, reaction product has only water, to zero environmental.In addition, because the moving component in the fuel cell seldom, work is quiet, and noise is low, and therefore good reliability is subjected to domestic and international researchist's attention day by day.
Heat production in the fuel cell and heat transfer knowledge are most important to the commercialization of fuel cell performance, life-span and fuel cell system etc., the water cut of the heat flow density distribution influence activity of such catalysts in the fuel cell, film and heat and mass etc. in addition, and it is closely related with the life-span of electric current distribution and fuel cell, therefore the heat flow density that obtains fuel battery inside distributes, can determine the optimal operating condition of fuel cell, for the optimal design of fuel cell is offered help, and can provide reference for the numerical modeling of fuel cell.
Because the structure of fuel cell self makes heat flow density skewness that it is inner and be transient state, therefore measure very difficult, also do not see up to now fuel battery inside heat flow density distribution measuring relevant deliver thing.The existing Temperature Distribution method of testing relevant with the heat flow density distribution has two kinds: steady state method and transient state method.The temperature range that traditional steady state method temperature-measurement principle is clear, easy to make, measurement is direct, be suitable for is broad also, the measurement required time is long, volume is big, the temperature-responsive that is changing is had hysteresis phenomenon but exist, and can not satisfy the problems such as measurement index of required high transient heat flow at present.Therefore the film-type heat flow meter is short owing to the response time, accuracy is high, thermal capacity is little, enjoy researchist's attention in the world to environmental requirement is low, but its application in fuel cell is also rarely found.
Miniaturization and requirements of saving energy along with development of science and technology, equipment, need to be grasped the income and expenses of various device heat, so the present invention adopts the film heat flow meter that response speed is fast, highly sensitive, volume is little, spatial resolution is high to carry out the measurement that the fuel battery inside heat flow density distributes.
Summary of the invention
The measurement mechanism that the object of the present invention is to provide a kind of independently fuel battery inside heat flow density to distribute, it is a kind of heat flow density distribution measuring inserted sheet of fuel cell, it is simple in structure, the response time is short, highly sensitive, easy to use, cost is low, can measure the heat flow density distribution situation of fuel battery inside, need not fuel cell is carried out frequent dismounting, also need not carry out any transformation the original structure of fuel cell.In addition, it can be under the situation of not destroying the flow field, and the heat flow density in the on-line measurement fuel cell distributes, and also can measure in the fuel cell pack heat flow density distribution situation between any one or several fuel-cell single-cells inside or the monocell.
Technical scheme of the present invention is achieved in that fuel battery inside heat flow density distribution measuring inserted sheet, comprises film heat flow meter 4, extension line 5, the standard connection jaws 6 that is connected with external circuit, pilot hole 7 that the thin film coating on two-sided gold-plated stainless steel substrate 1, the substrate 1 constitutes; Substrate 1 is provided with crack 2, is provided with muscle 3 between the adjacent crack 2; It is characterized in that: the end at substrate 1 is provided with the standard connection jaws 6 that is connected with external circuit, film heat flow meter 4 is on the muscle 3 between the substrate 1 adjacent crack 2, and the edge that its extension line 5 extends to substrate 1 links to each other with the standard connection jaws 6 that is connected with external circuit; Fuel battery inside heat flow density distribution measuring inserted sheet 39 is installed between the membrane electrode assembly 41 and fuel battery anode flow field board 38 of fuel cell, the membrane electrode assembly 41 of the face of film heat flow meter 4 towards fuel cell is set on the substrate 1, and the film heat flow meter 4 that fuel cell assembles on the meron contacts with the membrane electrode assembly 41 of fuel cell;
Film heat flow meter 4 on the substrate 1 is to adopt the muscle 3 between two adjacent cracks 2 of vacuum coating technology to be provided with seven layer film coating: the position that film heat flow meter 4 at first is set on muscle 3 is coated with the thick 0.1-0.15 μ m silicon dioxide insulating layer that is according to silicon dioxide insulating layer mask shape; on silicon dioxide insulating layer, be coated with the strip silicon dioxide thermoresistance layer of two thick 0.1-0.2 μ m then; twine coat of metal copper and the coat of metal nickel of thick 0.08-0.1 μ m at silicon dioxide thermoresistance layer upper and lower surface spiral; lower floor's thermopile that coat of metal copper and coat of metal nickel are connected below the silicon dioxide thermoresistance layer and form measuring heat of heat flow meter; it is the copper-nickel thermopile of low temperature face; the upper strata thermopile that same coat of metal copper and coat of metal nickel are connected above the silicon dioxide thermoresistance layer and form heat flow meter; it is the copper-nickel thermopile of high temperature face; end at strip silicon dioxide thermoresistance layer; the copper of measuring heat of heat flow meter one side-nickel thermopair is connected with the copper-nickel thermopair of opposite side and is formed the whole thermoelectric pile of measuring heat of heat flow meter; the other end at strip silicon dioxide thermoresistance layer; the coating of film thermocouple is connected with the copper plate of circle, is coated with the silicon dioxide layer of protection of thick 0.01-0.02 μ m above the coat of metal of measuring heat of heat flow meter.
In the described coating material, the simple metal film thermocouple coating that copper and mickel is formed can select for use copper and cobalt, tungsten and nickel, molybdenum and nickel, antimony and cobalt to substitute, also can adopt metal mixture material such as copper and constantan to substitute, in addition, the silicon dioxide insulating layer material can adopt replacements such as aluminium nitride.
The shape of coating is provided with according to mask, and mask is to adopt the thick stainless steel material of 0.01mm, utilizes wavelength to make for the frequency tripled laser process technology of 248nm, has the place of mask just not have coating, does not have the place of mask that coating is just arranged.
The shape of the thermoelectric pile coat of metal can be ellipse, triangle, trapezoidal, rectangle, polygon, waveform and irregularly shaped in the mask, and the shape of thermoresistance layer also can be rectangle, ellipse, trapezoidal etc.
The extension line 5 of the film heat flow meter 4 on the substrate 1 is to adopt printed circuit technique to make, extension line 5 is wide to be 0.05-0.1mm, thickness is no more than 0.3 μ m, be made of the four-level membrane that prints on the muscle 3 between 1 two adjacent cracks 2 of substrate: ground floor is the thick silicon dioxide insulating layer of 0.1-0.15 μ m, the second layer is the thick thin copper layer of 0.08-0.1 μ m, the 3rd layer is the thick thin gold layer of 0.08-0.1 μ m, and outermost layer is the thick Parylene protective seam of 0.01-0.02 μ m;
The three first layers printed layers of extension line 5 is identical on length and width; all extend to the end of substrate 1; and the width of last layer protective layer is identical with three first layers, but the end from substrate also has 5-8mm on length, only extends to terminal standard connection jaws 6 places that are connected with external circuit of substrate.
The employing vacuum coating technology is coated with the film heat flow meter of some on the muscle between the adjacent crack on the substrate, is used for measuring the heat flow density distribution situation of fuel battery inside.This measurement mechanism is measured accurately, and dismounting cell is convenient, has avoided the problems such as fuel losses in the battery simultaneously.The mask material of film heat flow meter is selected the thick stainless steel material of 0.01mm for use, and adopting wavelength is 248nm frequency tripled laser process technology, produces the small film heat flow meter mask of size, and the shape of mask is regular, and size is accurate.
Because the shape of groove and ridge and measure-alike on the shape of crack and muscle and size and the flow-field plate on the substrate, the position is corresponding, therefore after substrate installs in fuel cell, reactive fuel can not influence the transmission of fuel by runner through the membrane electrode assembly diffusion of on-chip crack to fuel cell.Apparatus of the present invention are installed between fuel cell flow field board and the membrane electrode assembly applicable to fuel-cell single-cell; Also be applicable to the fuel cell group, its position not only can be placed between fuel cell flow field board and the membrane electrode assembly, also can be placed between two monocells.Can singly survey the heat flow density distribution situation of anode of fuel cell or cathode side, also can measure the distribution situation of yin, yang the two poles of the earth heat flow density simultaneously.This measuring method need not change the structure of fuel cell, and can be used for the fuel cell pack heat flow density measurement of monocell inside arbitrarily, can realize the conveniently fast disassembling battery, simultaneously because to measure inserted sheet very thin and be provided with and corresponding crack of flow-field plate and muscle, make reactive fuel can be easy to arrive membrane electrode assembly, so the existence of inserted sheet is little to the fuel cell overall performance impact.
The extension line of film heat flow meter is drawn by the method for P.e.c., avoided adopting macroscopical lead to cause the problems such as fuel leak of fuel cell, be provided with the standard connection jaws that is connected with external circuit at the end of fuel battery inside heat flow density distribution measuring inserted sheet as extension line.
Adopt the heat flow density of the inside of heat flow density distribution measuring commercial measurement fuel cell of the present invention to distribute: can make the device of measuring the heat flow density distribution be independent of tested fuel cell, need not the structure of fuel cell is transformed, simplified the step of fuel battery inside heat flow density distribution measuring greatly; In addition, can realize dismantling easily and fast and assembled battery; This contrive equipment can be applicable to fuel-cell single-cell and fuel cell group simultaneously, not only can be placed between fuel cell flow field board and the membrane electrode assembly, also can be placed in the fuel cell pack between any two monocells, both can the independent measurement anode of fuel cell or the heat flow density of negative electrode distribute, the heat flow density that also can measure fuel cell negative and positive the two poles of the earth simultaneously distributes.Fuel battery inside heat flow density apparatus for measuring distribution of the present invention is simple in structure, response speed is fast, highly sensitive, fabrication and processing is easy, applied widely; Applicable to active fuel cell also applicable to passive type fuel cell.
Description of drawings
Fig. 1 is that the fuel battery inside heat flow density poroid measurement inserted sheet that distributes has only the subjective figure of signal of a standard connection jaws;
Fig. 2 is that the fuel battery inside heat flow density poroid measurement inserted sheet that distributes has the subjective figure of signal of two standard connection jaws;
Fig. 3 is the subjective synoptic diagram of single film heat flow meter on the fuel battery inside heat flow density distribution measuring inserted sheet;
Fig. 4 is the making process flow diagram of single film heat flow meter on the fuel battery inside heat flow density distribution measuring inserted sheet;
Fig. 5 is the extension line sectional view of fuel battery inside heat flow density distribution measuring inserted sheet upper film heat flow meter;
Fig. 6 is the location drawing of fuel battery inside heat flow density distribution measuring inserted sheet in fuel cell;
Fig. 7 is that distribute parallel crack of fuel battery inside heat flow density is measured the subjective figure of inserted sheet signal;
Fig. 8 is that the fuel battery inside heat flow density snakelike single crack that distributes is measured the subjective figure of inserted sheet signal;
Fig. 9 is that snakelike pair of crack of fuel battery inside heat flow density distribution measured the subjective figure of inserted sheet signal;
Among the figure 1, substrate, 2, runner, 3, the muscle between the adjacent channels, 4, the film heat flux sensor, 5, lead-in wire, 6, the standard connection jaws that is connected with external circuit, 7, pilot hole;
The mask of 8-14, each coating: 8, silicon dioxide insulating layer mask, 9, low temperature face copper plate mask, 10, low temperature face nickel coating mask, 11, silicon dioxide thermoresistance layer mask, 12, high temperature face copper plate mask, 13, high temperature face nickel coating mask, 14, the silicon dioxide layer of protection mask;
15-21, the coating that forms according to the mask shape of each coating: 15, silicon dioxide insulating layer, 16, low temperature face copper plate, 17, low temperature face nickel coating, 18, silicon dioxide thermoresistance layer, 19, high temperature face copper plate, 20, the high temperature face nickel coating, 21, silicon dioxide layer of protection;
The preparation process of 22-28, film measuring heat of heat flow meter: 22, first step, 23, second step, 24, third step, the 25, the 4th step, the 26, the 5th step, the 27, the 6th step, the 28, the 7th step;
29, the junction of film heat flux sensor gauge head and its extension line, 30, the node of heat flux sensor gauge head low temperature face thermoelectric pile, 31, the thermoelectric pile node of heat flux sensor gauge head high temperature face;
Each printed layers of 32-35, film heat flux sensor lead-in wire, 32, lead-in wire first floor silicon dioxide insulating layer, 33, lead-in wire second layer copper plate, 34, the 3rd layer of Gold plated Layer of lead-in wire, 35, last strata P-xylene protective seam goes between;
The two poles of the earth end plate of (36～45), fuel cell to be measured, the two poles of the earth collector plate of (37～44), fuel cell to be measured, the flow-field plate of (38～43), fuel cell to be measured, 39, be fuel battery inside heat flow density distribution measuring inserted sheet, the gasket seal of (40～42), fuel cell to be measured, 41, the membrane electrode assembly of fuel cell to be measured.
Embodiment
Accompanying drawing is specific embodiments of the invention;
Below in conjunction with accompanying drawing content of the present invention is described in further detail:
Shown in figure 1,2, the position and the quantity of the standard connection jaws 6 of film heat flow meter extension line can be provided with according to demand.As Fig. 1, Fig. 2, shown in Figure 3, the present invention includes two-sided gold-plated stainless steel substrate 1, substrate is thick to be 0.3-0.5mm, gold-plated bed thickness is 0.08-0.1 μ m, be processed with on substrate 1 that groove with the fuel cell runner is identical with the ridge physical dimension, geometric configuration is identical, the corresponding crack 2 in position and muscle 3, whole of muscle 3 is provided with several film heat flow meters 4, the extension line 5 of film heat flow meter 4 extends to the edge of substrate 1, end at extension line 5 is provided with the standard connection jaws 6 that is connected with external circuit, and 7 is pilot hole among the figure.Heat flow density measuring element of the present invention and extension line all are plated on the thick substrate of 0.3-0.5mm 1, and drawing live width is 0.05-0.1mm, and thickness is no more than 0.3 μ m, and extension line 5 is guided to standard data interface 6 places that the measurement mechanism edge is connected with external circuit.By the standard data interface 6 that is connected with external circuit, the heat flow density numerical value of fuel battery inside can be gathered and calculate in outside data acquisition and processing (DAP) system, thereby obtain the heat flow density distribution situation of fuel battery inside.
With reference to Fig. 3, shown in Figure 4; our structure and manufacturing process thereof of single film heat flow meter 4 on the fuel battery inside heat flow density distribution measuring inserted sheet 39 as can be seen from figure; 8-14 is the mask figure of each coating; the shape of mask can arbitrarily change as required; 8 is the silicon dioxide insulating layer mask; 9 is low temperature face copper plate mask; 10 is low temperature face nickel coating mask; 11 is silicon dioxide thermoresistance layer mask; 12 is high temperature face copper plate mask; 13 is high temperature face nickel coating mask, and 14 is the silicon dioxide layer of protection mask.Wherein the shape of the thermoelectric pile coat of metal can be the shape shown in Fig. 4 in the mask, also can be ellipse, triangle, trapezoidal, rectangle, polygon, waveform and irregularly shaped etc., the shape of thermoresistance layer also can be rectangle, ellipse, trapezoidal etc.; Produce each coating according to the shape of mask, 15 is silicon dioxide insulating layer, and 16 is low temperature face copper plate, and 17 is low temperature face nickel coating, and 18 is the silicon dioxide thermoresistance layer, and 19 is the high temperature face copper plate, and 20 is the high temperature face nickel coating, and 21 is silicon dioxide layer of protection.
As shown in Figure 4, produce the film measuring heat of heat flow meter through the strict process flow process, 22-28 is the preparation process of film measuring heat of heat flow meter among the figure, the position that film heat flux sensor 4 at first is set on the muscle between the adjacent channels 23 on the graphite flow field plates 1 plates layer of silicon dioxide insulation course 15, form step 1 22, to guarantee the accuracy of signal conduction; Then low temperature face copper plate 16 is set on 15, forms second step 23; Low temperature face nickel coating 17 is set on the basis of second step 23, forms third step 24, obtain the low temperature face copper nickel thermoelectric pile of film heat flux sensor gauge head, be used for measuring the temperature of graphite flow field plates; Silicon dioxide thermoresistance layer 18 is set on the basis of third step 24, forms the 4th step 25; High temperature face copper plate 19 is set on the basis of the 4th step 25, forms the 5th step 26; High temperature face nickel coating 20 is set on the basis of the 5th step 26, forms the 6th step 27, obtain the low temperature face copper nickel thermoelectric pile of film heat flux sensor gauge head, be used for measuring temperature from the nearest membrane electrode assembly of the electrochemical reaction of fuel cell; The silicon dioxide layer of protection 21 of film heat flux sensor gauge head is set on the basis of the 6th step 27, has so just formed complete film heat flux sensor gauge head 28.Among the figure; 30 and 31 are respectively the low temperature face of film heat flux sensor and the thermoelectric pile node of high temperature face; the lead-in wire 5 of plating film heat flux sensor gauge head 4 is made into circle with the junction 29 of gauge head so that 5 draw of going between; in order to prevent the damage of film heat flux sensor gauge head, plated the very thin silicon dioxide layer of protection 21 of one deck on the surface of gauge head.
With reference to shown in Figure 5; the extension line 5 of single film heat flow meter 4 is to adopt printed circuit technique to make on gold-plated corrosion resistant plate substrate 1 on the inserted sheet; 32 is the silicon dioxide insulating layer of the thick 0.1-0.2 μ of extension line first floor m among the figure; 33 is the copper plate of the extension line second bed thickness 0.08-0.1 μ m; 34 is the Gold plated Layer of extension line threeply 0.08-0.1 μ m, and 35 is the Parylene protective seam of last bed thickness of extension line 0.01-0.02 μ m.The wide of extension line is 0.05-0.1mm; thickness is no more than 0.3 μ m; three first layers printed layers shape, size and the position of extension line 5 are identical; all extend to the end of substrate 1; and last layer protective layer is identical with three first layers on shape and position; but length is than the short 5-8mm of three first layers, and when being connected with the equipment of external circuit with assurance, the electric signal that records can spread out of smoothly.Draw live width 0.05-0.1mm.The thermoelectrical potential of each film heat flow meter 4 all is to link to each other with data collecting instrument and data handling system by the standard connection jaws 6 that is connected with external circuit signal is spread out of.
With reference to shown in Figure 6,36 and 45 is the two poles of the earth end plate of fuel cell to be measured among the figure, 37 and 44 is the two poles of the earth collector plate of fuel cell to be measured, 38 and 43 is the flow-field plate of fuel cell to be measured, 39 is fuel battery inside heat flow density distribution measuring inserted sheet, 40 and 42 is the gasket seal of fuel cell to be measured, and 41 is the membrane electrode assembly of fuel cell to be measured.Fuel battery inside heat flow density apparatus for measuring distribution 39 is installed between membrane electrode assembly 41 and the fuel battery anode flow field board 38, the groove and the ridge size of the crack 2 on the fuel battery inside heat flow density apparatus for measuring distribution 39 and muscle 3 and anode flow field board 38 upper runners, shape is identical, the position is corresponding, the face that is coated with film heat flow meter 4 on the fuel battery inside heat flow density apparatus for measuring distribution 39 is towards membrane electrode assembly 41, so that more approaching, can access fuel battery inside heat flow density distribution situation the most accurately with the position of fuel battery inside electrochemical reaction.In addition, fuel battery inside heat flow density distribution measuring inserted sheet 39 can also be installed in the heat flow density distribution that is used for measuring fuel battery negative pole between membrane electrode assembly 41 and the fuel cell cathode flow field plate 43, also can be simultaneously between the yin, yang bipolar flow field plate of fuel cell and membrane electrode assembly 41 folder fuel battery inside heat flow density distribution measuring inserted sheet 39, the heat flow density distribution of measuring yin, yang the two poles of the earth simultaneously.Wherein the shape of the crack on the fuel battery inside heat flow density distribution measuring inserted sheet can be snakelike, parallel, poroid etc., and the substrate 1 that is coated with film heat flow meter 4 simultaneously can conduction current.
Fig. 7 is the subjective figure of parallel crack measurement mechanism signal for the fuel battery inside heat flow density distributes, the corresponding crack 2 of parallel fluid channels and the muscle 3 of setting and fuel cell on the gold-plated stainless steel substrate 1, the extension line 5 of film heat flow meter 4 utilize printed circuit technique to be drawn out to substrate 1 terminal standard connection jaws 6 places that are connected with external circuit equally.
Fig. 8 is the subjective figure of snakelike single crack measurement mechanism signal for the fuel battery inside heat flow density distributes, the corresponding crack 2 of snakelike single channel and the muscle 3 of setting and fuel cell on the gold-plated stainless steel substrate 1, the extension line 5 of film heat flow meter 4 utilize the technology of P.e.c. to be drawn out to substrate 1 terminal standard connection jaws 6 places that are connected with external circuit equally.
Fig. 9 is snakelike couple of subjective figure of crack measurement mechanism signal of fuel battery inside heat flow density distribution, the corresponding crack 2 of snakelike dual channel and the muscle 3 of setting and fuel cell on the gold-plated stainless steel substrate 1, the extension line 5 of film heat flow meter 4 utilize the technology of P.e.c. to be drawn out to substrate 1 terminal standard connection jaws 6 places that are connected with external circuit equally.
The present invention is by clamp the heat flow density distribution situation that a very thin fuel battery inside thermal flow density measuring device inserted sheet is measured fuel battery inside between any one flow-field plate of fuel cell and membrane electrode assembly, the heat flow density that can measure negative and positive the two poles of the earth simultaneously distributes, and the heat flow density that also can measure between arbitrary monocell in the fuel cell pack or the monocell distributes.This measuring technique makes heat flow density apparatus for measuring distribution and tested fuel cell independent fully, need not original battery structure is done any change, so it is convenient to measure, and processing and fabricating is easy, usable range is wide, can be used for the measurement that dissimilar fuel battery inside heat flow densities distributes.
Claims (6)
1. fuel battery inside heat flow density distribution measuring inserted sheet comprises film heat flow meter (4), extension line (5), the standard connection jaws (6) that is connected with external circuit, pilot hole (7) that the thin film coating on two-sided gold-plated stainless steel substrate (1), the substrate (1) constitutes; Substrate (1) is provided with crack (2), is provided with muscle (3) between the adjacent crack (2); It is characterized in that: the end at substrate is provided with the standard connection jaws (6) that is connected with external circuit, film heat flow meter (4) is positioned on the muscle (3) between the adjacent crack of substrate (1) (2), and the edge that its extension line (5) extends to substrate (1) links to each other with the standard connection jaws (6) that is connected with external circuit; Fuel battery inside heat flow density distribution measuring inserted sheet (39) is installed between the membrane electrode assembly (41) and fuel battery anode flow field board (38) of fuel cell, the membrane electrode assembly (41) of the face of film heat flow meter (4) towards fuel cell is set on the substrate (1), and the film heat flow meter (4) that fuel cell assembles on the meron contacts with the membrane electrode assembly (41) of fuel cell;
Film heat flow meter (4) on the substrate (1) is to adopt the muscle (3) between two adjacent cracks of vacuum coating technology (2) to be provided with seven layer film coating: the position that film heat flow meter (4) is set on muscle (3) is coated with the thick 0.1-0.15 μ m silicon dioxide insulating layer that is according to silicon dioxide insulating layer mask shape; on silicon dioxide insulating layer, be coated with the strip silicon dioxide thermoresistance layer of two thick 0.1-0.2 μ m; twine coat of metal copper and the coat of metal nickel of thick 0.08-0.1 μ m at silicon dioxide thermoresistance layer upper and lower surface spiral; lower floor's thermopile that coat of metal copper and coat of metal nickel are connected below the silicon dioxide thermoresistance layer and form measuring heat of heat flow meter; it is the copper-nickel thermopile of low temperature face; the upper strata thermopile that same coat of metal copper and coat of metal nickel are connected above the silicon dioxide thermoresistance layer and form heat flow meter; it is the copper-nickel thermopile of high temperature face; end at strip silicon dioxide thermoresistance layer; the copper of measuring heat of heat flow meter one side-nickel thermopair is connected with the copper-nickel thermopair of opposite side and is formed the whole thermoelectric pile of measuring heat of heat flow meter; the other end at strip silicon dioxide thermoresistance layer; the coating of film thermocouple is connected with the copper plate of circle, is coated with the silicon dioxide layer of protection of thick 0.01-0.02 μ m above the coat of metal of measuring heat of heat flow meter.
2. fuel battery inside heat flow density distribution measuring inserted sheet according to claim 1, it is characterized in that: substrate (1) is the good two-sided gold-plated stainless steel thin slice of a kind of electric conductivity, the thick of substrate (1) is 0.3-0.5mm, and the thickness of Gold plated Layer is 0.08-0.1 μ m; It is identical on physical dimension, geometric configuration with groove and ridge on the fuel cell flow field board to be measured that substrate (1) is gone up set crack (2) and muscle (3), corresponding on the position, the shape of the crack on the substrate (1) can be snakelike, parallel, poroid etc., also is provided with and fuel cell position corresponding positioning hole (7) on the substrate (1).
3. fuel battery inside heat flow density distribution measuring inserted sheet according to claim 1, it is characterized in that: in the described coating material, the simple metal film thermocouple coating that copper and mickel is formed can select for use copper and cobalt, tungsten and nickel, molybdenum and nickel, antimony and cobalt to substitute, also can adopt metal mixture material such as copper and constantan to substitute, in addition, the silicon dioxide insulating layer material can adopt replacements such as aluminium nitride.
4. fuel battery inside heat flow density distribution measuring inserted sheet according to claim 1, it is characterized in that: the shape of coating is provided with according to mask, mask is to adopt the thick stainless steel material of 0.01mm, utilize wavelength to make for the frequency tripled laser process technology of 248nm, there is the place of mask just not have coating, do not have the place of mask that coating is just arranged.
5. fuel battery inside heat flow density distribution measuring inserted sheet according to claim 1, it is characterized in that: the shape of the thermoelectric pile coat of metal can be ellipse, triangle, trapezoidal, rectangle, polygon, waveform and irregularly shaped in the mask, and the shape of thermoresistance layer also can be rectangle, ellipse, trapezoidal etc.
6. fuel battery inside heat flow density distribution measuring inserted sheet according to claim 1, it is characterized in that: the extension line (5) of the film heat flow meter (4) on the substrate (1) adopts printed circuit technique to make, extension line (5) is wide to be 0.05-0.1mm, thickness is no more than 0.3 μ m, the four-level membrane that is upward printed by the muscle (3) between (1) two adjacent crack of substrate (2) constitutes: ground floor is the thick silicon dioxide insulating layer of 0.1-0.15 μ m, the second layer is the thick thin copper layer of 0.08-0.1 μ m, the 3rd layer is the thick thin gold layer of 0.08-0.1 μ m, and outermost layer is the thick Parylene protective seam of 0.01-0.02 μ m;
The three first layers printed layers of extension line (5) is identical on length and width; all extend to the end of substrate (1); and the width of last layer protective layer is identical with three first layers; but the end from substrate on length also has 5-8mm, only extends to the terminal standard connection jaws (6) that is connected with external circuit of substrate and locates.
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| CN2011100405733A CN102116679B (en) | 2011-02-18 | 2011-02-18 | Insertion piece for measuring transient heat flow density distribution in fuel cell |
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| CN2011100405733A CN102116679B (en) | 2011-02-18 | 2011-02-18 | Insertion piece for measuring transient heat flow density distribution in fuel cell |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089706A (en) * | 2014-07-29 | 2014-10-08 | 北京卫星环境工程研究所 | Transient heat flow meter used under thermal vacuum environment and heat flow measuring method |
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| CN104089706A (en) * | 2014-07-29 | 2014-10-08 | 北京卫星环境工程研究所 | Transient heat flow meter used under thermal vacuum environment and heat flow measuring method |
| CN104089706B (en) * | 2014-07-29 | 2017-04-26 | 北京卫星环境工程研究所 | Transient heat flow meter used under thermal vacuum environment and heat flow measuring method |
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| CN111609951B (en) * | 2020-06-09 | 2021-04-30 | 华中科技大学 | Conformal preparation method of thick film heat flow meter and product |
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| RU2760640C1 (en) * | 2020-10-26 | 2021-11-29 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" (Госкорпорация "Росатом") | Multichannel temperature sensor |
| CN114906582A (en) * | 2022-04-18 | 2022-08-16 | 泉州市旺达五金制品有限公司 | Automatic arrangement detection method and device for circular machine inserts |
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