CN104359573A - Fuel cell internal temperature-current density synchronous measurement sensor - Google Patents
Fuel cell internal temperature-current density synchronous measurement sensor Download PDFInfo
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- CN104359573A CN104359573A CN201410637399.4A CN201410637399A CN104359573A CN 104359573 A CN104359573 A CN 104359573A CN 201410637399 A CN201410637399 A CN 201410637399A CN 104359573 A CN104359573 A CN 104359573A
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Abstract
A fuel cell internal temperature-current density synchronous measurement sensor comprises sixth layers of films which are evaporated by means of vacuum evaporation coating technology. The first layer is a silicon dioxide insulation layer, the second and third layers are a film thermocouple copper coating and a film thermocouple nickel coating respectively, the fourth layer is a silicon dioxide protection layer, the fifth and sixth layers are a current density measurement copper coating and a current density measurement gold coating respectively, and leads are made by means of vacuum evaporation coating technology as well. The fuel cell internal temperature-current density synchronous measurement sensor can realize synchronous online measurement of internal temperature and current density of a fuel cell, does not require special modification on the internal structure of the fuel cell, has the advantages of simple structure, simplicity in production, small size and the like, is applicable to fuel cell flow field plates with flow channels of various shapes, and is capable of synchronously measuring internal temperature and current intensity of single position or multiple positions inside the fuel cell.
Description
Technical field
The invention belongs to fuel battery inside parameter measurement field, relate to the measurement of fuel battery inside local current densities and temperature, particularly a kind of fuel battery inside temperature-current density translocation sensor.
Background technology
Fuel cell, as a kind of energy conversion device chemical energy being directly converted to electric energy, has energy density high, pollution-free, and the features such as low noise receive the common concern of countries in the world researchist.The electrochemical reaction of fuel cell mainly concentrates on membrane electrode, and the speed of electrochemical reaction speed decides the height of fuel battery performance, and it is subject to the impact of many factors, as concentration, the flow of reacting gas, and the temperature, humidity etc. of inside battery.
The local current densities of fuel cell, the impact of many factors can be reflected, as the flow etc. of fuel battery inside resistance, temperature, reacting gas, contribute to understanding the heat and mass phenomenon of fuel battery inside by the research of local current densities, and provide theoretical foundation for the structure optimization of fuel cell.
At present, research method for local current densities mainly contains: sub-battery method, local film-electrode method, magnet ring group method etc., traditional measuring method needs to split or special transformation fuel battery pole board or flow-field plate mostly, as cut flow-field plate or inserting copper rod etc., not only make complexity, and easily cause the performance of fuel cell to reduce, simultaneously, classic method can only independent measurement local current density, be difficult to be combined with the measurement of temperature, and this parameter of temperature is one of important parameter affecting fuel battery performance, it is the emphasis that fuel cell studies is paid close attention to.
The measuring method of temperature survey and current density combines by the present invention, makes a transducer probe assembly achieve the function of synchronous on-line measurement fuel battery inside temperature and current density, without the need to carrying out special transformation to the structure of fuel cell; This sensor bulk is little, and the response time is fast, measuring accuracy is high, can carry out synchro measure to the current density of the single-point in fuel cell or multiple spot and temperature and not affect the performance of fuel cell easily.
Summary of the invention
The object of the present invention is to provide a kind of can synchronously to the sensor that current density and the temperature of fuel battery inside are monitored.This invention does not need to carry out special transformation to the pole plate of fuel cell and flow-field plate, and structure is simple, easy to make, and the position on fuel cell flow field board is flexible, directly can measure current density and the temperature of fuel battery inside.
For realizing above-mentioned technical purpose, technical scheme of the present invention is as follows: fuel battery inside temperature-current density translocation sensor, comprise fuel cell flow field board 1, temperature-current density translocation sensor 4, lead-in wire 5, fuel cell flow field board 1 is provided with runner 2 and ridge 3, temperature-current density translocation sensor 4 is arranged on the ridge 3 between fuel cell flow field board 1 liang of adjacent channels 2, one end of lead-in wire 5 connects with the wiring exit of temperature-current density translocation sensor 4, and the other end extends to the edge of fuel cell flow field board 1; During fuel cell assembling, fuel cell flow field board 1 is furnished with temperature-current density translocation sensor 4 facing to fuel cell membrane electrode side and close contact with it.
Described temperature-current density translocation sensor 4 is six layer films adopting vacuum evaporation coating film method evaporation on ridge 3: ground floor is the silicon dioxide insulating layer 12 of thick 0.08-0.12 μm, the second layer is evaporation thick film thermocouple copper coating 13 for 0.1-0.12 μm on silicon dioxide insulating layer 12, and third layer is evaporation thick film thermocouple nickel coating 14 for 0.1-0.12 μm on silicon dioxide insulating layer 12; The shape of described film thermocouple copper coating 13 and film thermocouple nickel coating 14 is strip, and mesophase spherule lap connects, and lap-joint forms film thermocouple hot junction node 25, and head end is film thermocouple wiring exit 24; 4th layer is the thick silicon dioxide layer of protection 15 for 0.08-0.12 μm of evaporation above the film thermocouple coat of metal, layer 5 is that the thick current density for 1.5-2.0 μm of evaporation above silicon dioxide layer of protection 15 measures copper coating 16, and layer 6 is measure the thick current density for 0.1-0.12 μm of evaporation above copper coating 16 in current density to measure gold plate 17; Described current density measures copper coating 16 and current density measurement gold plate 17 constitutes the current density measurement coat of metal 26, and head end is that current density measures coat of metal wiring exit 27.
Described film thermocouple wiring exit 24 and current density are measured coat of metal wiring exit 27 and are all made into circle, and are all arranged in the same side of silicon dioxide insulating layer 12.
The making step of temperature-current density translocation sensor comprises step one 18, step 2 19, step 3 20, step 4 21, step 5 22, step 6 23; Specifically, step one 18, according to evaporation layer of silicon dioxide insulation course 12 on the ridge 3 of silicon dioxide insulating layer mask 6 between fuel cell flow field board 1 liang of adjacent channels 2, insulate with the coat of metal and fuel cell flow field board that make temperature-current density translocation sensor; Step 2 19, according to film thermocouple copper coating mask 7 evaporation thin film thermopair copper coating 13 on silicon dioxide insulating layer 12; Step 3 20, according to film thermocouple nickel coating mask 8 evaporation thin film thermopair nickel coating 14 on silicon dioxide insulating layer 12; Step 4 21, according to silicon dioxide layer of protection mask 9 evaporation layer of silicon dioxide protective seam 15 above film thermocouple copper coating 13 and film thermocouple nickel coating 14, measures between the coat of metal to make film thermocouple and current density and insulate fully; Step 5 22, measures copper coating mask 10 evaporation one Lyer current density according to current density and measures copper coating 16 above silicon dioxide layer of protection 15; Step 6 23, measures above copper coating 16 in current density and measures gold plate mask 11 evaporation one Lyer current density measurement gold plate 17 according to current density; Form temperature-current density translocation sensor by above step, its external metering circuit and data acquisition equipment can realize the synchro measure to fuel battery inside temperature and current density.
Silicon dioxide insulating layer 12 in described temperature-current density translocation sensor 4 can be made into square, circular, polygon, trapezoidal, triangle, irregular figure.
In described film thermocouple coat of metal material, the simple metal coating be made up of copper and mickel can also select tungsten and nickel, copper and cobalt, molybdenum and nickel, antimony and cobalt to substitute, and metal mixture material such as copper and constantan also can be adopted to substitute.
In described temperature-current density translocation sensor 4, the shape of film thermocouple copper coating and film thermocouple nickel coating sets according to the shape of mask, its shape can also be ellipse, arc, waveform, rhombus and irregularly shaped, and the shape mutually after overlap joint can be arc, waveform, serrate.
In described temperature-current density translocation sensor 4, the shape of current density measurement copper coating and current density measurement gold plate sets according to the shape of mask, and its shape can be square, circular, oval, trapezoidal.
Described film thermocouple wiring exit 24 and current density measure the both sides being arranged in silicon dioxide insulating layer 12 that coat of metal wiring exit 27 can be relative respectively, and its shape also can be ellipse, rectangle, trapezoidal, triangle.
The width of described lead-in wire 5 is 0.1-0.2mm; adopt the four-level membrane of vacuum evaporation coating film method evaporation to form: ground floor is the lead-in wire silicon dioxide insulating layer 28 of thick 0.08-0.12 μm; the second layer is the lead-in wire copper coating 29 of thick 0.1-0.12 μm; third layer is the lead-in wire gold plate 30 of thick 0.1-0.12 μm, and most last layer is the lead-in wire silicon dioxide layer of protection (31) of thick 0.05-0.1 μm.
The lead-in wire silicon dioxide insulating layer 28 of lead-in wire 5 is all consistent in shape, position and size with the gold plate 30 that goes between with lead-in wire copper coating 29; lead-in wire silicon dioxide layer of protection 31 is identical in shape with position with three first layers; but in close flow-field plate edge, outline is shorter than three first layers.
The shape of described fuel cell flow field board 1 upper runner 2 can be parallel fluid channels, snakelike single channel runner, serpentine multichannel runner, interdigitated gas distributor stream, irregular runner.
Compared with prior art, the present invention has following beneficial effect.
Fuel battery inside temperature-current density translocation sensor of the present invention, film thermocouple temperature measuring unit and current density are measured coat of metal survey current unit to be integrated on a transducer probe assembly, achieve the synchronous on-line measurement to fuel battery inside temperature and current density; This invention adopts vacuum vapor plating fabrication techniques, structure is simple, easy to make, volume is little, be suitable for the fuel cell flow field board of various flow channel shape, do not need to carry out special transformation to fuel battery inside structure, reduce the fuel battery performance brought due to the implantation of multiple sensors and reduce; This invention simultaneously can either carry out synchro measure to the temperature of the single position of fuel battery inside and current density, also can measure multiple position.
Accompanying drawing explanation
Fig. 1 is the subjective schematic diagram that temperature-current density translocation sensor is arranged in parallel fluid channels flow-field plate;
Fig. 2 is the subjective schematic diagram of single temperature-current density translocation sensor on fuel cell flow field board;
Fig. 3 is the Making programme figure of single temperature-current density translocation sensor on fuel cell flow field board;
Fig. 4 is the subjective schematic diagram in cross section of temperature-current density translocation sensor lead;
Fig. 5 is the subjective schematic diagram that temperature-current density translocation sensor is arranged in interdigitated gas distributor flow-field plate;
Fig. 6 is the subjective schematic diagram that temperature-current density translocation sensor is arranged on snakelike single channel fluid flow on channel plate;
Fig. 7 is the subjective schematic diagram that temperature-current density translocation sensor is arranged on serpentine multichannel fluid flow on channel plate;
In figure, 1, fuel cell flow field board, 2, runner, 3, ridge, 4, temperature-current density translocation sensor, 5, lead-in wire;
6-11 is each coating mask of temperature-current density translocation sensor: 6, silicon dioxide insulating layer mask, 7, film thermocouple copper coating mask, 8, film thermocouple nickel coating mask, 9, silicon dioxide layer of protection mask, 10, current density measures copper coating mask, and 11, current density measures gold plate mask;
12-17 is each coating of temperature-current density translocation sensor according to mask evaporation: 12, silicon dioxide insulating layer, 13, film thermocouple copper coating, 14, film thermocouple nickel coating, 15, silicon dioxide layer of protection, 16, current density measure copper coating, 17, current density measure gold plate;
18-23 is the making step of temperature-current density translocation sensor: 18, step one, 19, step 2,20, step 3,21, step 4,22, step 5,23, step 6;
24, film thermocouple wiring exit, 25, film thermocouple hot junction node, 26, current density measures the coat of metal, 27, current density measures coat of metal wiring exit;
28, go between silicon dioxide insulating layer, 29, lead-in wire copper coating, 30, lead-in wire gold plate, 31, lead-in wire silicon dioxide layer of protection;
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
With reference to shown in Fig. 1, fuel battery inside temperature-current density translocation sensor of the present invention, comprise fuel cell flow field board 1, temperature-current density translocation sensor 4, lead-in wire 5, temperature-current density translocation sensor 4 is arranged on the ridge 3 between fuel cell flow field board 1 liang of adjacent channels 2, and one end of lead-in wire 5 is connected with the wiring exit of temperature-current density translocation sensor 4, the other end extends to the edge of flow-field plate, for transmitting the electric signal that temperature-current density translocation sensor produces; When fuel cell is assembled, fuel cell flow field board 1 is furnished with temperature-current density translocation sensor 4 facing to membrane electrode side and close contact with it.
With reference to shown in Fig. 2, temperature-current density translocation sensor 4 of the present invention is made up of six layer films of vacuum evaporation coating membrane technology evaporation on the ridge 3 of fuel cell flow field board 1: ground floor is the silicon dioxide insulating layer 12 of thick 0.08-0.12 μm, the second layer is evaporation thick film thermocouple copper coating 13 for 0.1-0.12 μm on silicon dioxide insulating layer 12, third layer is evaporation thick film thermocouple nickel coating 14 for 0.1-0.12 μm on silicon dioxide insulating layer 12, 4th layer is the thick silicon dioxide layer of protection 15 for 0.08-0.12 μm of evaporation above the film thermocouple coat of metal, measure between the coat of metal to make film thermocouple and current density and insulate fully, in case the electric signal of film thermocouple is subject to the interference that current density measures coat of metal electric current, layer 5 is that the thick current density for 1.5-2.0 μm of evaporation above silicon dioxide layer of protection 15 measures copper coating 16, and layer 6 is measure the thick current density for 0.1-0.12 μm of evaporation above copper coating 16 in current density to measure gold plate 17, because copper and gold are the good conductor of heat, coefficient of heat conductivity is very high, in addition the current density of evaporation is measured copper coating and current density to measure gold plate all very thin, and therefore the current density of evaporation on film thermocouple upper strata is measured copper coating and current density and measured gold plate and can be left in the basket to the interference that film thermocouple measuring accuracy causes.
Fig. 3 is Making programme figure: 6-11 of single temperature-current density translocation sensor is each coating mask of temperature-current density translocation sensor, 12-17 is each coating of temperature-current density translocation sensor according to mask evaporation, and 18-23 is the making step of temperature-current density translocation sensor.First according to silicon dioxide insulating layer mask 6 evaporation layer of silicon dioxide insulation course 12, as the dielectric substrate of sensor, thus completing steps 1, step 2 19 is according to film thermocouple copper coating mask 7 evaporation thin film thermopair copper coating 13 on silicon dioxide insulating layer 12, equally, step 3 20 is according to film thermocouple nickel coating mask 8 evaporation thin film thermopair nickel coating 14 on silicon dioxide insulating layer 12, step 4 21 is according to silicon dioxide layer of protection mask 9 evaporation layer of silicon dioxide protective seam 15 above film thermocouple copper coating 13 and film thermocouple nickel coating 14, on the basis of step 4, above silicon dioxide layer of protection 15, measure copper coating mask 10 evaporation one Lyer current density according to current density measure copper coating 16 completing steps 5 22, step 6 23 is measure above copper coating 16 in current density to measure gold plate mask 11 evaporation one Lyer current density measurement gold plate 17 according to current density, temperature-current density translocation sensor is formed by above step, its external metering circuit and data acquisition equipment can realize the synchro measure to fuel battery inside temperature and current density.
Wherein, the global shape of temperature-current density translocation sensor is decided by the shape of silicon dioxide insulating layer, and it is square that it not only can be made into shown in Fig. 3, also can be circle, polygon, trapezoidal, other shape such as triangle, irregular figure.The film thermocouple copper coating 13 that step 2 19 and step 3 20 complete and film thermocouple nickel coating 14 constitute film thermocouple, mutually overlap in the middle of it, lap-joint constitutes film thermocouple hot junction node 25, thus achieve the measurement of temperature, the shape of its coat of metal sets according to the shape of mask, also can be ellipse, arc, waveform, rhombus and other shape such as irregularly shaped, the shape mutually after overlap joint can be arc, waveform, serrate etc.; The material of the film thermocouple coat of metal also can be tungsten and nickel, copper and cobalt, molybdenum and nickel, antimony and cobalt etc. substitute, and metal mixture material such as copper and constantan also can be adopted to substitute.The current density that step 5 22 and step 6 23 complete measures copper coating 16 and current density measurement gold plate 17 is overlapped, constitute current density and measure the coat of metal 26, to realize the measurement of current density, its shape also can change according to the shape of mask, can be other shapes such as rectangle, ellipse, circle, triangle, trapezoidal, irregular figure.
The head end of film thermocouple is film thermocouple wiring exit 24, and the head end that current density measures the coat of metal is that current density measures coat of metal wiring exit 27, and it act as and is conveniently connected with lead-in wire 5, carries out the conduction of electric signal.The shape that film thermocouple wiring exit 24 and current density measure coat of metal wiring exit 27 not only can be the shape shown in Fig. 3, also ellipse can be made as, rectangle, trapezoidal, other shape such as triangle, its position all can be arranged in the same side of silicon dioxide insulating layer 12, also the both sides being arranged in silicon dioxide insulating layer 12 that can be symmetrical, namely when film thermocouple wiring exit 24 is positioned at the upside of silicon dioxide insulating layer 12, current density measures the opposite side that coat of metal wiring exit 27 is arranged in the silicon dioxide insulating layer 12 relative with film thermocouple wiring exit 24, to facilitate sensor lead 5 layout on flow field plates.
Fig. 4 is the schematic cross-section of temperature-current density translocation sensor lead, the width of this lead-in wire 5 is 0.1-0.2mm, adopt the four-level membrane of vacuum evaporation coating film method evaporation to form: ground floor is the lead-in wire silicon dioxide insulating layer 28 of thick 0.08-0.12 μm, the second layer is the lead-in wire copper coating 29 of thick 0.1-0.12 μm, third layer is the lead-in wire gold plate 30 of thick 0.1-0.12 μm, and most last layer is the lead-in wire silicon dioxide layer of protection 31 of thick 0.05-0.1 μm; The lead-in wire silicon dioxide insulating layer 28 of lead-in wire 5 is all consistent in shape, position and size with the gold plate 30 that goes between with lead-in wire copper coating 29; lead-in wire silicon dioxide layer of protection 31 is identical in shape with position with three first layers; but in close flow-field plate edge; outline is shorter than three first layers, is connected with the lead-in wire of external data collecting device to facilitate.
Fig. 5 is the layout schematic diagram of temperature-current density translocation sensor in interdigitated gas distributor flow-field plate, the ridge of interdigitated gas distributor flow-field plate is furnished with temperature-current density translocation sensor 4,5 one end that go between connect with temperature-current density translocation sensor wiring exit, and the other end extends to flow-field plate edge.
Fig. 6 is the layout schematic diagram of temperature-current density translocation sensor on snakelike single channel fluid flow on channel plate, the ridge of flow-field plate is furnished with temperature-current density translocation sensor 4,5 one end that go between connect with temperature-current density translocation sensor wiring exit, and the other end extends to flow-field plate edge.
Fig. 7 is the layout schematic diagram of temperature-current density translocation sensor on serpentine multichannel fluid flow on channel plate, the ridge of flow-field plate is furnished with temperature-current density translocation sensor 4,5 one end that go between connect with temperature-current density translocation sensor wiring exit, and the other end extends to flow-field plate edge.
Adopt fuel battery inside temperature-current density translocation sensor of the present invention, the synchronous on-line measurement of fuel battery inside temperature and current density can be realized.This invention simplicity of design, easy to make, do not need to carry out special transformation to fuel cell flow field board or pole plate, reduce job costs.
Claims (8)
1. fuel battery inside temperature-current density translocation sensor, comprise fuel cell flow field board (1), temperature-current density translocation sensor (4), lead-in wire (5), fuel cell flow field board (1) is provided with runner (2) and ridge (3), temperature-current density translocation sensor (4) is arranged on the ridge (3) between fuel cell flow field board (1) two adjacent channels (2), one end of lead-in wire (5) connects with the wiring exit of temperature-current density translocation sensor (4), the other end extends to the edge of fuel cell flow field board (1), during fuel cell assembling, fuel cell flow field board (1) is furnished with temperature-current density translocation sensor (4) facing to fuel cell membrane electrode side and close contact with it, it is characterized in that:
Described temperature-current density translocation sensor (4) is adopt vacuum evaporation coating film method at six layer films of the upper evaporation of ridge (3): ground floor is the silicon dioxide insulating layer (12) of thick 0.08-0.12 μm, the second layer is evaporation at the upper thick film thermocouple copper coating (13) for 0.1-0.12 μm of silicon dioxide insulating layer (12), and third layer is evaporation at the upper thick film thermocouple nickel coating (14) for 0.1-0.12 μm of silicon dioxide insulating layer (12); The shape of described film thermocouple copper coating (13) and film thermocouple nickel coating (14) is strip, mesophase spherule lap connects, lap-joint forms film thermocouple hot junction node (25), and head end is film thermocouple wiring exit (24); 4th layer is the thick silicon dioxide layer of protection (15) for 0.08-0.12 μm of evaporation above the film thermocouple coat of metal, layer 5 is measure copper coating (16) in the thick current density for 1.5-2.0 μm of silicon dioxide layer of protection (15) top evaporation, and layer 6 is measure the thick current density for 0.1-0.12 μm of evaporation above copper coating (16) in current density to measure gold plate (17); Described current density measures copper coating (16) and current density measurement gold plate (17) constitutes the current density measurement coat of metal (26), and head end is that current density measures coat of metal wiring exit (27);
Described film thermocouple wiring exit (24) and current density are measured coat of metal wiring exit (27) and are all made into circle, and are all arranged in the same side of silicon dioxide insulating layer (12).
The making step of temperature-current density translocation sensor comprises step one (18), step 2 (19), step 3 (20), step 4 (21), step 5 (22), step 6 (23); Specifically, step one (18), according to the upper evaporation layer of silicon dioxide insulation course (12) of the ridge (3) of silicon dioxide insulating layer mask (6) between fuel cell flow field board (1) two adjacent channels (2), insulate with the coat of metal and fuel cell flow field board that make temperature-current density translocation sensor; Step 2 (19), according to film thermocouple copper coating mask (7) evaporation thin film thermopair copper coating (13) on silicon dioxide insulating layer (12); Step 3 (20), according to film thermocouple nickel coating mask (8) at upper evaporation thin film thermopair nickel coating (14) of silicon dioxide insulating layer (12); Step 4 (21), in the top of film thermocouple copper coating (13) and film thermocouple nickel coating (14) according to silicon dioxide layer of protection mask (9) evaporation layer of silicon dioxide protective seam (15), measure between the coat of metal to make film thermocouple and current density and insulate fully; Step 5 (22), measures copper coating mask (10) evaporation one Lyer current density in the top of silicon dioxide layer of protection (15) according to current density and measures copper coating (16); Step 6 (23), measures copper coating (16) top in current density and measures gold plate mask (11) evaporation one Lyer current density measurement gold plate (17) according to current density; Form temperature-current density translocation sensor by above step, its external metering circuit and data acquisition equipment can realize the synchro measure to fuel battery inside temperature and current density.
2. fuel battery inside temperature-current density translocation sensor according to claim 1, is characterized in that: the silicon dioxide insulating layer (12) in described temperature-current density translocation sensor (4) can be made into square, circular, polygon, trapezoidal, triangle, irregular figure.
3. fuel battery inside temperature-current density translocation sensor according to claim 1, it is characterized in that: in described film thermocouple coat of metal material, the simple metal coating be made up of copper and mickel can also select tungsten and nickel, copper and cobalt, molybdenum and nickel, antimony and cobalt to substitute, and metal mixture material such as copper and constantan also can be adopted to substitute.
4. fuel battery inside temperature-current density translocation sensor according to claim 1, it is characterized in that: in described temperature-current density translocation sensor (4), the shape of film thermocouple copper coating and film thermocouple nickel coating sets according to the shape of mask, its shape can also be ellipse, arc, waveform, rhombus and irregularly shaped, and the shape mutually after overlap joint can be arc, waveform, serrate.
5. fuel battery inside temperature-current density translocation sensor according to claim 1, it is characterized in that: in described temperature-current density translocation sensor (4), the shape of current density measurement copper coating and current density measurement gold plate sets according to the shape of mask, its shape can be square, circular, oval, trapezoidal.
6. fuel battery inside temperature-current density translocation sensor according to claim 1, it is characterized in that: the both sides being arranged in silicon dioxide insulating layer (12) that described film thermocouple wiring exit (24) and current density measurement coat of metal wiring exit (27) can be relative respectively, its shape also can be ellipse, rectangle, trapezoidal, triangle.
7. fuel battery inside temperature-current density translocation sensor according to claim 1, it is characterized in that: the width of described lead-in wire (5) is 0.1-0.2mm, adopt the four-level membrane of vacuum evaporation coating film method evaporation to form: ground floor is the lead-in wire silicon dioxide insulating layer (28) of thick 0.08-0.12 μm, the second layer is the lead-in wire copper coating (29) of thick 0.1-0.12 μm, third layer is the lead-in wire gold plate (30) of thick 0.1-0.12 μm, and most last layer is the lead-in wire silicon dioxide layer of protection (31) of thick 0.05-0.1 μm;
Lead-in wire (5) lead-in wire silicon dioxide insulating layer (28) with go between copper coating (29) and the gold plate (30) that goes between all consistent in shape, position and size; lead-in wire silicon dioxide layer of protection (31) is identical in shape with position with three first layers; but in close flow-field plate edge, outline is shorter than three first layers.
8. fuel battery inside temperature-current density translocation sensor according to claim 1, is characterized in that: the shape of described fuel cell flow field board (1) upper runner (2) can be parallel fluid channels, snakelike single channel runner, serpentine multichannel runner, interdigitated gas distributor stream, irregular runner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410637399.4A CN104359573A (en) | 2014-11-05 | 2014-11-05 | Fuel cell internal temperature-current density synchronous measurement sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410637399.4A CN104359573A (en) | 2014-11-05 | 2014-11-05 | Fuel cell internal temperature-current density synchronous measurement sensor |
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| CN104359573A true CN104359573A (en) | 2015-02-18 |
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| CN103675694A (en) * | 2012-09-26 | 2014-03-26 | 同济大学 | Fuel cell pile online regional detection system and method |
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| US20040095127A1 (en) * | 2002-10-28 | 2004-05-20 | Masahiro Mohri | Apparatus for measuring current density of fuel cell |
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| CN101324641A (en) * | 2008-04-15 | 2008-12-17 | 西安交通大学 | Flow field plate for measuring fuel battery local current density |
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Application publication date: 20150218 |