CN110057395A - Fuel battery inside temperature-humidity detecting device - Google Patents

Fuel battery inside temperature-humidity detecting device Download PDF

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Publication number
CN110057395A
CN110057395A CN201811125975.1A CN201811125975A CN110057395A CN 110057395 A CN110057395 A CN 110057395A CN 201811125975 A CN201811125975 A CN 201811125975A CN 110057395 A CN110057395 A CN 110057395A
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CN
China
Prior art keywords
plate
temperature
subcircuits
control circuit
circuit board
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CN201811125975.1A
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Chinese (zh)
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CN110057395B (en
Inventor
王亚军
陶有堃
郑礼康
陈进
李辉
王海江
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Southwest University of Science and Technology
Southern University of Science and Technology
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Southwest University of Science and Technology
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Priority to CN201811125975.1A priority Critical patent/CN110057395B/en
Publication of CN110057395A publication Critical patent/CN110057395A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Abstract

The invention belongs to fuel cell field of measuring technique, are related to fuel battery inside temperature-humidity detecting device.By using in integral type Temperature Humidity Sensor insertion plate body, realization detects the temperature and humidity of fuel battery inside any position simultaneously, reduces the influence generated due to installation sensor to fuel cell structure.Multiple subcircuits plates are electrically connected to control circuit board by arranging needle, each subcircuits plate is equipped at least two Temperature Humidity Sensors, Temperature Humidity Sensor shares baseline and power supply line, effectively reduces layout area, convenient that the Temperature Humidity Sensor to break down is dismounted and replaced.Inside battery localized electrochemical reaction is monitored, can be occurred by adjusting external input parameter to avoid the adverse reaction of fuel cell, and then achievees the effect that optimize performance and improve the service life.Cumbersome wiring is reduced using wireless transmission method, facilitates detection bipolar plates assembly, avoids misconnection and breaking phenomena.

Description

Fuel battery inside temperature-humidity detecting device
Technical field
The invention belongs to fuel cell field of measuring technique, are to be related to the inspection of fuel battery inside temperature and humidity more specifically Survey device.
Background technique
Fuel cell is the power generator for the chemical energy in fuel being converted directly by electrochemical reaction electric energy.Fuel Battery has gone through more than 100 years courses from invention so far.Since energy and environment have become what human society was depended on for existence Important Problems, since nearly 20 years, this energy conversion device efficiently, clean of fuel cell has obtained national governments, developer And the most attention of research institution, it is civilian in communications and transportation, portable power, dispersion power station, aerospace and underwater hiding-machine etc. Wide application prospect is shown with military domain.Currently, fuel cell car, power station and portable power etc. are in demonstration In the stage, with the investment energetically of national governments and research institution, fuel cell technology progress is advanced by leaps and bounds, however to meet business The requirement of change will not only meet the requirement of aspect of performance, it is necessary to have good stability, reliability and service life.
Fuel cell internal temperature and the variation of humidity moment in the process of running, temperature is excessively high to will cause proton exchange membrane Mechanical strength reduces, and then causes the life time decay of fuel cell;The reaction activity of the too low then reaction gas of temperature is opposite to be increased Add, operation of fuel cells efficiency is relatively low.Similarly, humidity is excessive be easy to cause fuel battery inside water logging state occur, effectively Response area just reduces;Humidity is too low, and the proton exchange membrane water cooperation of fuel cell is increased with bad then resistance, and then is caused The internal resistance of battery increases, and the output voltage of fuel cell reduces.By internal each in real-time monitoring fuel cell operation The state of region temperature and humidity can in real time regulate and control the external input parameter of fuel cell, make fuel cell in optimal shape State nearby works, and then extends the service life of fuel cell.
The existing internal Temperature and Humidity of pile passes through mostly installs small temperature sensor (such as thermoelectricity occasionally temperature-sensitive electricity Resistance etc.) and humidity sensor (such as fibre optical sensor or film-type humidity sensor) detected, can not at the same inside pile Same position carries out Temperature and Humidity, therefore can not accurately study temperature and humidity coupling phenomenon;Simultaneously thermocouple, thermistor or Fibre optical sensor output is analog signal, and signal is easy to interfere (environmental disturbances of such as high-intensity magnetic field or forceful electric power) by extraneous factor, And larger (being no less than 100A substantially) the event analog signal of pile operational process electric current wireless high-precision transmission relatively difficult to achieve;Temperature at present Humidity Detection is all wired measurement method, and when carrying out Temperature and Humidity inside pile, cumbersome wiring is unfavorable for bipolar plates and exists Installation inside pile, and it is easy to appear misconnection and breaking phenomena.
Summary of the invention
The purpose of the present invention is to provide a kind of fuel battery inside temperature-humidity detecting devices, are difficult to solving the prior art Temperature and Humidity, the cumbersome skill for being unfavorable for installing inside pile of detection device wiring are carried out to pile inside same position simultaneously Art problem.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of fuel battery inside Temperature and Humidity is provided Device, detection bipolar plates including fuel cell pack, in the fuel cell pack are electrically connected with the detection bipolar plates Host computer and radio receiver with the upper mechatronics;The detection bipolar plates include having intermediate active area Plate body, the intermediate active zoning are divided into multiple subregions of matrix distribution;The plate body is offered along the width side of the plate body To several mounting grooves of extension, each mounting groove passes through to be divided described at least two of the width direction distribution along the plate body Area, and the mounting groove passes through one of side of the plate body;The detection bipolar plates further include corresponding to be installed on The subcircuits plate of each mounting groove, the Temperature Humidity Sensor being installed on the subcircuits plate and be set to the plate Control circuit board outside the side of body;The quantity of the Temperature Humidity Sensor is identical as the quantity of the subregion, and described warm and humid Degree sensor one-to-one correspondence is distributed in the subregion;The plate body corresponds at each subregion in the bottom surface of the mounting groove Mounting hole is offered respectively, and the Temperature Humidity Sensor is located at the corresponding mounting hole;It is installed on the same subcircuits The quantity of the Temperature Humidity Sensor on plate is equal to the quantity that the mounting groove passes through the subregion, is installed on same institute The Temperature Humidity Sensor stated on subcircuits plate shares power and ground;The quantity and the peace of the subcircuits plate The quantity of tankage is equal, and the subcircuits plate close to the same side of the plate body passes through row's needle respectively and is electrically connected to together One control circuit board, the subcircuits plate offer the first spliced eye, and the control circuit board offers second and inserts Hole is connect, the both ends of row's needle are plugged in first spliced eye and second spliced eye respectively;Filling in the mounting groove There is the heat-conductive solid glue for sealing the subcircuits plate;The one side of the plate body close to the mounting hole offers stream Road;The control circuit board is equipped with power supply, cooperates the wireless transmission dress with wireless transmitted signals with the radio receiver It sets and transmits signals to the wireless launcher for controlling the Temperature Humidity Sensor and control wireless transmission dress Set the controller for transmitting signals to the radio receiver.
Further, the plate body passes through after the heat-conductive solid adhesive curing filled with the one side of the heat-conductive solid glue It crosses milling and obtains working face.
Further, the subcircuits plate is connect with the control circuit board using iic bus form.
Further, the plate body has two rows of mounting grooves, and two rows of mounting groove correspondences are equipped with described in two rows Subcircuits plate;The quantity of the control circuit board is two, and two control circuit boards are located at two of the plate body Outside side, subcircuits plate described in a row is electrically connected to the same control circuit board.
Further, the control circuit board is equipped with for the charging unit to power source charges;Alternatively, the control electricity Road plate is equipped with the power interface for powering by DC source to the control circuit board.
Further, the length direction of the subcircuits plate and the length direction of the control circuit board are mutually perpendicular to.
Further, the Temperature Humidity Sensor has water proof and dust proof protective film.
Further, the intermediate active area offers placing groove, and the detection bipolar plates further include being set to the placement Slot and with the one-to-one measuring unit of the subregion and the first insulating part between the adjacent measuring unit;It is described Measuring unit includes two conductive sheets being separately arranged, the second insulating part between two conductive sheets, its both ends Connect one to one in two conductive sheets measuring resistance, be electrically connected with the measuring resistance the first conducting wire, be arranged in The air pressure sensor of the conductive sheet and the second conducting wire being electrically connected with the air pressure sensor, lead described in two Electric piece is arranged respectively close in the two sides of the plate body;The controller passes through first conducting wire and measuring resistance electricity It connects to measure the voltage drop of the standard resistor at two terminals, the controller is passed by second conducting wire and the gas pressure intensity Sensor is electrically connected to measure gas pressure intensity;The subcircuits plate is located between two layers of conductive sheet.
Further, the measuring resistance uses four-wire measurement, and two tests are respectively set in the both ends of the measuring resistance Point, test point described in one pair of them are directly accessed the both ends of the measuring resistance, another pair of test as electric current supply Point is arranged for measuring voltage close to the both ends of the measuring resistance.
It further, is four corresponding to the quantity of first conducting wire of a measuring unit, the same measurement One of them described conductive sheet in unit and the junction between the measuring resistance, another described conductive sheet with it is described Junction between measuring resistance is connected separately with first conducting wire, and each conductive sheet is connected separately with an institute State the first conducting wire.
The present invention compared with the existing technology have the technical effect that fuel battery inside temperature-humidity detecting device structure simply may be used It leans on, pile detects bipolar plates and is easy dismounting.By using in integral type Temperature Humidity Sensor insertion plate body, realize to fuel cell The temperature and humidity of internal any position detects simultaneously, and installation by adhering mode has no effect to membrane electrode and reaction gas runner, Since detection bipolar plates resistance is seldom, the influence generated to fuel cell can be ignored, and avoid causing gas to expand when external installation Dissipate influence of the structure change of layer (GDL) and fuel cell chip (CCM) conversion zone to electrochemical reaction.Multiple subcircuits Plate is electrically connected to control circuit board by arranging needle, and each subcircuits plate is equipped at least two Temperature Humidity Sensors, temperature and humidity Sensor shares baseline and power supply line, effectively reduces layout area, and wiring is more simplified and conveniently, while very convenient to generation The Temperature Humidity Sensor of failure is dismounted and is replaced.Inside battery localized electrochemical reaction is monitored, tune is then passed through Section external input parameter can occur to avoid the adverse reaction of fuel cell, and then reach optimization performance and improve the effect in service life Fruit.Simultaneously by the fuel battery inside data of acquisition, complete test data can be provided for the modeler of fuel cell, into And the model of fuel cell is carried out perfect.Cumbersome wiring, very convenient detection are effectively reduced using wireless transmission method The assembly of bipolar plates, effectively prevents misconnection and breaking phenomena.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these Attached drawing obtains other attached drawings.
Fig. 1 is the detection bipolar plates applied in fuel battery inside temperature-humidity detecting device provided in an embodiment of the present invention Main view;
Fig. 2 is the three-dimensional installation diagram of the detection bipolar plates of Fig. 1, and subcircuits plate does not show with Temperature Humidity Sensor;
Fig. 3 is the stereogram exploded view of the fuel battery inside temperature-humidity detecting device of Fig. 1;
Fig. 4 be Fig. 3 fuel battery inside temperature-humidity detecting device in apply subcircuits plate, Temperature Humidity Sensor with The installation diagram of control circuit board;
The cross-sectional view for the measuring unit applied in the detection bipolar plates that Fig. 5 is Fig. 1;
Fig. 6 is the three-dimensional installation diagram of fuel battery inside temperature-humidity detecting device provided in an embodiment of the present invention;
Fig. 7 is to be fitted cloud atlas by the temperature detection result that the detection bipolar plates of Fig. 1 obtain;
Fig. 8 is to be fitted cloud atlas by the Humidity Detection result that the detection bipolar plates of Fig. 1 obtain;
Fig. 9 is to be distributed online monitoring data table by the gas pressure intensity that the detection bipolar plates of Fig. 1 obtain;
Figure 10 is the gas pressure intensity distribution on-line monitoring three-dimensional figure obtained by the detection bipolar plates of Fig. 1;
Figure 11 is the gas pressure intensity distribution on-line monitoring X-Y scheme obtained by the detection bipolar plates of Fig. 1;
Figure 12 is the current density distributing figure obtained by the detection bipolar plates of Fig. 1.
Specific embodiment
In order to which technical problems, technical solutions and advantages to be solved are more clearly understood, tie below Accompanying drawings and embodiments are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only To explain the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element On one element or indirectly on another element.When an element is known as " being connected to " another element, it can To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom", "inner", "outside" is that orientation based on the figure or position are closed System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have Specific orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more, Unless otherwise specifically defined.
Also referring to Fig. 1 to Fig. 4, Fig. 6, first fuel battery inside temperature-humidity detecting device provided by the invention is carried out Explanation.Fuel battery inside temperature-humidity detecting device includes fuel cell pack 200, the detection in fuel cell pack 200 pair Pole plate 100, the host computer being electrically connected with detection bipolar plates 100 and the radio receiver with upper mechatronics;It detects bipolar Plate 100 includes the plate body 10 with intermediate active area, and intermediate active zoning is divided into multiple subregions 11 of matrix distribution;Plate body 10 is opened Several mounting grooves 12 equipped with the width direction extension along plate body 10, each mounting groove 12 is by the width direction point along plate body 10 At least two subregions 11 of cloth, and mounting groove 12 passes through one of side of plate body 10;Detecting bipolar plates 100 further includes one by one The corresponding subcircuits plate 40 for being installed on each mounting groove 12, the Temperature Humidity Sensor 50 being installed on subcircuits plate 40 and Control circuit board 60 outside the side of plate body 10;The quantity of Temperature Humidity Sensor 50 is identical as the quantity of subregion 11, and temperature The one-to-one correspondence of humidity sensor 50 is distributed in subregion 11;Plate body 10 corresponds at each subregion 11 in the bottom surface of mounting groove 12 to be distinguished Mounting hole 13 is offered, Temperature Humidity Sensor 50 is located at corresponding mounting hole 13;The temperature being installed on same subcircuits plate 40 The quantity of humidity sensor 50 is equal to a mounting groove 12 by the quantity of subregion 11, is installed on same subcircuits plate 40 Temperature Humidity Sensor 50 shares power and ground;The quantity of subcircuits plate 40 is equal with the quantity of mounting groove 12, close to The subcircuits plate 40 of the same side of plate body 10 is electrically connected to the same control circuit board 60, branch electricity by arranging needle 70 respectively Road plate 40 offers the first spliced eye 41, and control circuit board 60 offers the second spliced eye 61, and grafting is distinguished at the both ends of row's needle 70 In the first spliced eye 41 and the second spliced eye 61;Filled with the heat-conductive solid glue for sealing subcircuits plate 40 in mounting groove 12 (not shown);The one side of plate body 10 close to mounting hole 13 offers runner 14;Control circuit board 60 be equipped with power supply 80, with Radio receiver cooperates with the wireless launcher 90 of wireless transmitted signals and for controlling Temperature Humidity Sensor 50 for signal It is sent to wireless launcher 90 and controls the controller that wireless launcher 90 transmits signals to radio receiver.
Fuel battery inside temperature-humidity detecting device is simple and reliable for structure, and pile detects bipolar plates 100 and is easy dismounting.Pass through It is embedded in plate body 10 using integral type Temperature Humidity Sensor 50, the temperature and humidity of fuel battery inside any position is examined in realization simultaneously It surveys, installation by adhering mode has no effect to membrane electrode and reaction gas runner, since detection bipolar plates resistance is seldom, to combustion The influence that material battery generates can be ignored, and avoid causing when external installation gas diffusion layers and fuel cell chip conversion zone Structure changes the influence to electrochemical reaction.Multiple subcircuits plates 40 are electrically connected to control circuit board 60 by arranging needle 70, often A subcircuits plate 40 is equipped at least two Temperature Humidity Sensors 50, and Temperature Humidity Sensor 50 shares baseline and power supply line, has Effect reduces layout area, and wiring is more simplified and conveniently, while very convenient carrying out to the Temperature Humidity Sensor 50 to break down Dismounting and replacement.Inside battery localized electrochemical reaction is monitored, it then can be to avoid by adjusting external input parameter The adverse reaction of fuel cell occurs, and then achievees the effect that optimize performance and improve the service life.Pass through the fuel electricity of acquisition simultaneously Pond internal data can provide complete test data for the modeler of fuel cell, and then carry out to the model of fuel cell It is perfect.Cumbersome wiring is effectively reduced using wireless transmission method, the assembly of very convenient detection bipolar plates 100 is effectively kept away Misconnection and breaking phenomena are exempted from.
Plate body 10 is graphite plate, is easy molding, conducts electricity very well.Hydrogen transmission or cathode of the runner 14 for anode strip The oxygen transmission of piece, the flow field structure standard single cell flow field practical with pile are completely the same.
For the temperature accuracy of Temperature Humidity Sensor 50 up to 0.1 DEG C, humidity precision realizes temperature and humidity up to 1.5% High-precision detects.The probe of Temperature Humidity Sensor 50 is close to the installation of 10 runner of plate body, 14 bottom, can be to the reaction in runner 14 Gas temperature and humidity carries out in situ measurement.It, can be simultaneously using 50 matrix distributing installation of integral type Temperature Humidity Sensor in plate body 10 Temperature and Humidity is carried out to the same site of fuel battery inside different zones, provides high-precision original position for Fuel cell modeling research Detection data.
Temperature Humidity Sensor 50 sprays three-proofing coating (high temperature resistant, waterproof, insulation) at its exposed pin before installing and is drawn Foot protection.The arrangement of Temperature Humidity Sensor 50 uses iic bus structure.Temperature Humidity Sensor uses similar IIC signal Other digital signal Temperature Humidity Sensors carry out installation by adhering.50 two or more one groups of Temperature Humidity Sensor are mounted on one On subcircuits plate 40, power and ground can be shared, reduces layout area.And by the signal wire of Temperature Humidity Sensor 50 It is arranged among ground wire, the signal of Temperature Humidity Sensor 50 can be prevented by extraneous interference.The end of subcircuits plate 40 Control circuit board 60, compact-sized, easy assembling disassembling are connected to by arranging needle 70.It is very convenient to failing or break down warm and humid Degree sensor 50 is dismounted and is replaced.Heat-conductive solid glue high temperature resistant, it is anticorrosive, with heat-conductive solid glue to 10 mounting groove 12 of plate body Filler sealing.Heat-conductive solid glue can be one-component epoxy resin glue.
Controller is single-chip microcontroller or other controllers, can control the correlations such as Temperature Humidity Sensor 50, wireless launcher 90 Device.Controller control wireless launcher 90 sends Temperature Humidity Sensor 50 when carrying out Temperature and Humidity, temperature and humidity 50 data transmission frequency of sensor is no less than 100HZ.Wireless transmission can using rigbee or PTR2000 or other low energy consumption, Safe and reliable radio transmitting device, belongs to the prior art.
When carrying out fuel cell test, controller control Temperature Humidity Sensor 50 transmits a signal to wireless launcher 90, while controlling wireless launcher 90 and emitting digital signal to radio receiver, radio receiver will then receive data It is shown after being handled by the host computer that serial ports is transferred to computer.Host computer carries out interface using labview, and adopts Sensor historic data are checked with event trigger architecture.The temperature of Fig. 7 can be obtained in data processing by the prior art Testing result is fitted cloud atlas, the Humidity Detection result of Fig. 8 is fitted cloud atlas.
Further, a kind of specific embodiment party as fuel battery inside temperature-humidity detecting device provided by the invention Formula, plate body 10 need to clamp drying so that heat-conductive solid adhesive curing with fixture after being filled with heat-conductive solid glue.Plate body 10 is filled with The one side of heat-conductive solid glue obtains working face by milling after heat-conductive solid adhesive curing.Finish-milling plane operations guarantee its plane Degree is less than 0.01mm.
Further, a kind of specific embodiment party as fuel battery inside temperature-humidity detecting device provided by the invention Formula, subcircuits plate 40 are connect with control circuit board 60 using iic bus form.Temperature Humidity Sensor 50 exports IIC number letter Number, lossless high accuracy data transmission can be realized to avoid the interference of external environment.
Further, please see Fig. 2 to Fig. 4, as fuel battery inside temperature-humidity detecting device provided by the invention A kind of specific embodiment, plate body 10 have two rows of mounting grooves 12, and two rows of correspondences of mounting groove 12 are equipped with two rows of subcircuits plates 40;The quantity of control circuit board 60 is two, and two control circuit boards 60 are located at outside opposite two sides of plate body 10, a row Subcircuits plate 40 is electrically connected to the same control circuit board 60.Control circuit board 60 acts as the reinforcing rib of 10 two sides of plate body, The mechanical strength that plate body 10 not only can be enhanced very convenient carries out data transmission Temperature Humidity Sensor 50 simultaneously.
Further, a kind of specific embodiment party as fuel battery inside temperature-humidity detecting device provided by the invention Formula, control circuit board 60 is equipped with the charging unit for charging to power supply 80, convenient to carry out to 60 power supply 80 of control circuit board Charging;Alternatively, control circuit board 60 is equipped with the power supply 80 for powering by DC source to control circuit board 60 and sensor Interface.
It further, please be as a kind of specific embodiment party of fuel battery inside temperature-humidity detecting device provided by the invention Formula, the length direction of subcircuits plate 40 and the length direction of control circuit board 60 are mutually perpendicular to.The structure is convenient for subcircuits Plate 40 is installed on control circuit board 60, compact-sized, occupies little space.
Further, a kind of specific embodiment party as fuel battery inside temperature-humidity detecting device provided by the invention Formula, Temperature Humidity Sensor 50 has water proof and dust proof protective film, and can work in weakly acidic condition, and optimal temperature and humidity passes Sensor be Switzerland SHT31-DIS-F model sensor, size sensor be not more than 5mm*5mm*2mm, Temperature Humidity Sensor it is defeated Signal is IIC digital signal or other forms digital signal out.
Further, Fig. 1, Fig. 3, Fig. 5 are please referred to, as fuel battery inside temperature-humidity detecting device provided by the invention A kind of specific embodiment, intermediate active area offers placing groove, detection bipolar plates 100 further include set on placing groove and with point The one-to-one measuring unit 20 in area 11 and the first insulating part 30 between adjacent measurement 20;Measuring unit 20 is wrapped Include two conductive sheets being separately arranged 21, the second insulating part 22 between two conductive sheets 21, its both ends one-to-one correspondence The measuring resistance 23 for being connected to two conductive sheets 21, is arranged in conductive sheet 21 at the first conducting wire 24 being electrically connected with measuring resistance 23 Air pressure sensor 25 and the second conducting wire 26 for being electrically connected with air pressure sensor 25, two conductive sheets 21 lean on respectively It is bordering on the two sides setting of plate body 10;Controller is electrically connected by the first conducting wire 24 with measuring resistance 23 with measurement standard resistance 23 The voltage drop at both ends, controller are electrically connected by the second conducting wire 26 with air pressure sensor 25 to measure gas pressure intensity;Branch Circuit board 40 is located between two layers of conductive sheet 21.
The structure is easy assembly, compact-sized.The voltage drop at 23 both ends of controller measurement standard resistance, combined standard resistance 23 obtain current density with 21 area of conductive sheet, conversion.Controller obtains gas pressure intensity by air pressure sensor 25.It realizes It is electric in the reflection cell operation of authentic image to the synchronous on-line monitoring that inside battery current density is distributed with gas pressure intensity Current density and gas pressure intensity distribution situation.Conductive sheet 21 is gold plated copper sheets or graphite flake.The structure is easy molding, electric conductivity It is good.
Host computer is designed using labview, host computer sends instructions to control circuit when test, and control circuit can basis Instruction acquisition analog signal acquires each subregion 11 by calling multimeter built in labview to measure analog signal in real time Current density/air pressure sensor voltage signal, then transferring data in host computer procedure can after being calculated Obtain the current density and gas pressure intensity distribution situation of inside battery.
Oxygen/air, hydrogen gas and water are passed through when operation in pile.Each sensor conductor connection external data is acquired into equipment, And each critical physical parameter that analytical calculation is converted into pile operation is carried out, then data are drawn as three-dimensional distribution map.It measures After voltage drop U, the current density of the subregion is calculated according to formula U=IR, i=I/S.Wherein, U is standard resistor at two terminals electricity Pressure drop, R are the resistance value of measuring resistance, and I is subregion electric current, and S is Division area, and i is subregion current density.
The intermediate active area area of plate body 10 is 186cm2, be divided into 4*9 subregion 11, can according to active region size with And measurement demand voluntarily determines the number and shape of subregion 11.For the pile of full subregion 11, measured using electric resistance array high The current surface density of resolution ratio is distributed.Using in situ, nondestructive technology measurement gas pressure intensity distribution.It can be to pile subregion 11 Electrochemical in-situ test is carried out, Local physical chemical state is analyzed by impedance spectrum analytic technique, compares more physical quantity numbers According to being mutually authenticated, while the material composition and microstructure change of corresponding region after pile test are investigated, thus to pile unevenness Goed deep into attenuation law, is comprehensive and intuitively recognize.The Potential distribution of electrode plane can be obtained simultaneously.One piece in pile Or muti-piece monocell carries out physical quantity, obtains three-dimensional distribution map.
Between adjacent measurement 20 separately, the first insulating part 30 is insulating cement.There are gaps between each subregion 11, fill out Entering insulating cement makes its mutually insulated, to guarantee the relative independentability of each 11 test result of subregion.Second insulating part 22 is insulating cement, Second insulating part 22 is adhered between two conductive sheets 21 of same measuring unit 20.The structure is easy assembly, realizes two and leads The assembly of electric piece 21, compact overall structure.
Further, referring to Fig. 5, a kind of tool as fuel battery inside temperature-humidity detecting device provided by the invention Body embodiment, measuring resistance 23 use four-wire measurement, and two test points 23a, 23b are respectively set in the both ends of measuring resistance 23, One pair of them test point 23b is directly accessed the both ends of measuring resistance 23 as electric current supply, and another pair of test point 23a is for surveying It measures voltage and is arranged close to the both ends of measuring resistance 23.The resistance value of measuring resistance 23 varies with temperature, and is measured using four-wire method The resistance value of measuring resistance 23 eliminates the influence of measurement line resistance.Since the impedance of measurement voltage circuit is very high, voltage lead is flowed through Electric current it is very small, can be ignored, thus the resistance value of measured resistance is equal to voltage that voltage lead measures divided by logical The electric current of overcurrent lead effectively eliminates lead resistance bring error, realizes the precise measurement of measured resistance resistance value.This method Accurate calibration is used for resistance value of each measuring resistance 23 of current density measurement under any operation temperature at any time, guarantees accurate 23 both end voltage of measurement standard resistance drop, avoids temperature interference that current density is caused to calculate error.
Further, a kind of specific embodiment party as fuel battery inside temperature-humidity detecting device provided by the invention Formula, the quantity of the first conducting wire 24 corresponding to a measuring unit 20 are four, one of conductive in same measuring unit 20 Junction, another conductive sheet 21 between piece 21 and measuring resistance 23 and the junction between measuring resistance 23 are separately connected There is first conducting wire 24, each conductive sheet 21 is connected separately with first conducting wire 24.The structure is easy connection, using four lines The resistance value of method measurement standard resistance 23 eliminates the influence of measurement line resistance, convenient for the electricity between two conductive sheets 21 of precise measurement Pressure drop.
Measuring resistance 23 is set to the side edge of two conductive sheets 21;Alternatively, measuring resistance 23 be set to two conductive sheets 21 it Between.Above two scheme is able to achieve measuring resistance 23 and is electrically connected between two conductive sheets 21, and compact-sized.
Conductive sheet 21 in same measuring unit offers via hole 211, air pressure sensor 25 be located in via hole 211 and It is arranged close to the conductive sheet 21 with runner 211, air pressure sensor 25 is electrically connected with two second conducting wires 26, and second leads Line 26 is arranged in the setting of via hole 211.Air pressure sensor 25 is small-sized, can be placed in the runner 211 of conductive sheet 21, perception Then pressure sensor is connect, output signal by the gas pressure intensity flowed through by the second conducting wire 26 with controller.It hangs down in conductive sheet 21 Directly in the drill-through hole 211 of flow field direction, for installing air pressure sensor 25, air pressure sensor 25 converts physical signal For electric signal, it is transmitted to controller through the second conducting wire 26, then is transmitted to host computer, directly in graphical form by gas pressure intensity size It shows.
By the data processing of the prior art, as shown in Figures 9 to 11, gas pressure intensity distribution can be in real time with number in pile It is showed according to diversified forms such as table, X-Y scheme, three-dimensional figure, it is vivid, it is intuitive specific.
As shown in Figure 9, Figure 10, one piece of detection bipolar plates 100 is placed in the middle part of three battery stacks, is passed through in anode 103kPa, 60 DEG C, the air of excess coefficient 2.0, cathode are passed through 100kPa, 60 DEG C, the hydrogen of excess coefficient 1.2, and with 100kPa, 60 DEG C of deionized water carry out under cooling operation conditions, carry out the constant current test of 158A.As a result, it has been found that by entrance To outlet, gas pressure intensity is gradually reduced, and maximum pressure drop is about 20kPa, very fast close to exit air pressure decline, this may be by Caused by oxygen consumption and ponding cause oxygen transmission to be obstructed.(Fig. 9, Figure 10 show to be absolute pressure, test condition 103kPa and 100kPa is opposite pressure).
As shown in figure 11, under the test conditions above, observation each position gas pressure intensity of inside battery changes with time.By It is more in subregion 11, it only respectively chooses 4 subregions 11 at the air inlet of battery, gas outlet and intermediate position herein and draws.It can It to find out, is gradually decreased by air inlet to gas outlet pressure, this is mainly due to oxygen reduction reactions to consume caused by oxygen.With when Between increase, each position gas pressure intensity is all more stable, illustrate be equipped with subregion 11 detect bipolar plates 100 in the case where battery transport Row is good.
As shown in figure 12, under the test conditions above, discovery pile internal current Density Distribution is obviously uneven.Entrance Current density be apparently higher than exit, this is consistent with gas pressure intensity distribution tests result.Current density highest point appears in hydrogen Gas entrance, this is because fuel is sufficient at this time, temperature, humidity, gas pressure intensity state are all good, and cause without reasons such as ponding 's.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.

Claims (10)

1. fuel battery inside temperature-humidity detecting device, which is characterized in that including fuel cell pack, be set to the fuel cell pack Interior detection bipolar plates, the host computer being electrically connected with the detection bipolar plates and the wireless receiving with the upper mechatronics Device;The detection bipolar plates include the plate body with intermediate active area, and the intermediate active zoning is divided into the more of matrix distribution A subregion;The plate body offers several mounting grooves of the width direction extension along the plate body, and each mounting groove passes through At least two subregions being distributed along the width direction of the plate body, and the mounting groove passes through one of them of the plate body Side;The detection bipolar plates further include correspond be installed on the subcircuits plate of each mounting groove, be installed on it is described Temperature Humidity Sensor on subcircuits plate and the control circuit board outside the side of the plate body;The temperature and humidity sensing The quantity of device is identical as the quantity of the subregion, and Temperature Humidity Sensor one-to-one correspondence is distributed in the subregion;The plate Body corresponds at each subregion in the bottom surface of the mounting groove offers mounting hole respectively, and the Temperature Humidity Sensor is located at The corresponding mounting hole;The quantity for being installed on the Temperature Humidity Sensor on the same subcircuits plate is equal to an institute The quantity that mounting groove passes through the subregion is stated, the Temperature Humidity Sensor being installed on the same subcircuits plate shares electricity Source line and ground wire;The quantity of the subcircuits plate is equal with the quantity of the mounting groove, close to the same side of the plate body The subcircuits plate on side passes through row's needle respectively and is electrically connected to the same control circuit board, and the subcircuits plate opens up There is the first spliced eye, the control circuit board offers the second spliced eye, and the both ends of row's needle are plugged in described first respectively Spliced eye and second spliced eye;Filled with the heat-conductive solid glue for sealing the subcircuits plate in the mounting groove; The one side of the plate body close to the mounting hole offers runner;The control circuit board is equipped with power supply and the nothing The cooperation of line reception device passes signal with the wireless launcher of wireless transmitted signals and for controlling the Temperature Humidity Sensor It send to the wireless launcher and controls the controller that the wireless launcher transmits signals to the radio receiver.
2. fuel battery inside temperature-humidity detecting device as described in claim 1, which is characterized in that the plate body filling is The one side for stating heat-conductive solid glue obtains working face by milling after the heat-conductive solid adhesive curing.
3. fuel battery inside temperature-humidity detecting device as described in claim 1, which is characterized in that the subcircuits plate with The control circuit board is connected using iic bus form.
4. fuel battery inside temperature-humidity detecting device as described in claim 1, which is characterized in that the plate body has two rows The mounting groove, two rows of mounting grooves are corresponding to be equipped with two rows of subcircuits plates;The quantity of the control circuit board is Two, two control circuit boards are located at outside two sides of the plate body, and subcircuits plate described in a row is electrically connected to The same control circuit board.
5. fuel battery inside temperature-humidity detecting device as described in claim 1, which is characterized in that in the control circuit board Equipped with for the charging unit to power source charges;Alternatively, the control circuit board is equipped with for passing through DC source to the control The power interface of circuit board power supply processed.
6. fuel battery inside temperature-humidity detecting device as described in claim 1, which is characterized in that the subcircuits plate Length direction and the length direction of the control circuit board are mutually perpendicular to.
7. fuel battery inside temperature-humidity detecting device as described in claim 1, which is characterized in that the Temperature Humidity Sensor With water proof and dust proof protective film.
8. fuel battery inside temperature-humidity detecting device as described in any one of claim 1 to 7, which is characterized in that in described Between active region offer placing groove, the detection bipolar plates further include set on the placing groove and one-to-one with the subregion Measuring unit and the first insulating part between the adjacent measuring unit;The measuring unit includes two and separately sets The conductive sheet set, the second insulating part between two conductive sheets, its both ends connect one to one and lead described in two The measuring resistance of electric piece, the first conducting wire being electrically connected with the measuring resistance, the gas pressure intensity sensing for being arranged in the conductive sheet Device and the second conducting wire being electrically connected with the air pressure sensor, two conductive sheets are respectively close in the plate body Two sides setting;The controller is electrically connected with the measuring resistance by first conducting wire to measure the measuring resistance two The voltage drop at end, the controller are electrically connected by second conducting wire with the air pressure sensor to measure gas pressure By force;The subcircuits plate is located between two layers of conductive sheet.
9. fuel battery inside temperature-humidity detecting device as claimed in claim 8, which is characterized in that the measuring resistance uses Two test points are respectively set in four-wire measurement, the both ends of the measuring resistance, and test point described in one pair of them is supplied as electric current It is directly accessed the both ends of the measuring resistance, another pair of test point is for measuring voltage and close to the measuring resistance Both ends setting.
10. fuel battery inside temperature-humidity detecting device as claimed in claim 9, which is characterized in that correspond to described in one The quantity of first conducting wire of measuring unit is four, one of them described conductive sheet in the same measuring unit with it is described Junction, another described conductive sheet between measuring resistance and the junction between the measuring resistance are connected separately with one First conducting wire described in root, each conductive sheet are connected separately with first conducting wire.
CN201811125975.1A 2018-09-26 2018-09-26 Temperature and humidity detection device inside fuel cell Active CN110057395B (en)

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Publication number Priority date Publication date Assignee Title
CN111308359A (en) * 2020-03-31 2020-06-19 上海交通大学 Multifunctional on-line test system for large-area fuel cell

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JPH08111230A (en) * 1994-10-12 1996-04-30 Kansai Electric Power Co Inc:The Operating method for solid high polymer type fuel cell
CN102324537A (en) * 2011-08-31 2012-01-18 上海尧豫实业有限公司 Humidification system of fuel cell
CN103576095A (en) * 2012-08-02 2014-02-12 同济大学 System and method for detecting internal performance of fuel cell in real time
CN103675694A (en) * 2012-09-26 2014-03-26 同济大学 Fuel cell pile online regional detection system and method
CN104916855A (en) * 2015-06-30 2015-09-16 中国东方电气集团有限公司 Fuel cell device
CN108736049A (en) * 2018-04-24 2018-11-02 上海交通大学 A kind of fuel battery inside temperature and humidity on-line measurement system

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Publication number Priority date Publication date Assignee Title
JPH08111230A (en) * 1994-10-12 1996-04-30 Kansai Electric Power Co Inc:The Operating method for solid high polymer type fuel cell
CN102324537A (en) * 2011-08-31 2012-01-18 上海尧豫实业有限公司 Humidification system of fuel cell
CN103576095A (en) * 2012-08-02 2014-02-12 同济大学 System and method for detecting internal performance of fuel cell in real time
CN103675694A (en) * 2012-09-26 2014-03-26 同济大学 Fuel cell pile online regional detection system and method
CN104916855A (en) * 2015-06-30 2015-09-16 中国东方电气集团有限公司 Fuel cell device
CN108736049A (en) * 2018-04-24 2018-11-02 上海交通大学 A kind of fuel battery inside temperature and humidity on-line measurement system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111308359A (en) * 2020-03-31 2020-06-19 上海交通大学 Multifunctional on-line test system for large-area fuel cell

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