CN104111425A - Fuel cell cold starting partition performance test system and test method - Google Patents
Fuel cell cold starting partition performance test system and test method Download PDFInfo
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- CN104111425A CN104111425A CN201310136186.9A CN201310136186A CN104111425A CN 104111425 A CN104111425 A CN 104111425A CN 201310136186 A CN201310136186 A CN 201310136186A CN 104111425 A CN104111425 A CN 104111425A
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Abstract
The invention relates to a fuel cell cold starting partition performance test system and test method. The test system comprises a fuel cell, an oxidizing agent supply unit, a fuel supply unit, a clamping unit, a humidification unit, a cooling pipe, a high-low temperature box, a partition test plate, a load unit, a data acquisition unit and a data processing unit. The test method comprises the following steps: the anode plate of the fuel cell is replaced with the partition test plate; the temperature in the high-low temperature box reaches a set low-temperature environment temperature; oxidizing agent and fuel are provided for the fuel cell to make the fuel cell be in normal operation; the data acquisition unit is used to acquire the voltage drop across two ends of each embedded resistor, the voltage of each temperature resistor and the current flowing through the temperature resistor on a real-time basis; and the data processing unit is used to calculate the current density distribution of each partitioned region in the fuel cell and the partition temperature at each moment according to received signals to obtain a current density distribution diagram and a temperature distribution diagram. Compared with the prior art, the test system and test method of the invention have advantages of convenient operation, visual measurement and high stability.
Description
Technical field
The present invention relates to fuel cell field, especially relate to a kind of fuel cell cold start-up subregion Performance Test System and method of testing.
Background technology
Along with the in short supply and global climate of the traditional energies such as fossil constantly warms, facing mankind huge energy crisis and existence crisis.Need badly and seek novel, efficient, clean energy resource and progressively substitute traditional energy with reply energy crisis.Fuel cell becomes the focus of world's every country research with its excellent performance, in generating, portable power source, has brought into play great function on vehicle power.The research of fuel cell car is day by day deep, but its commercialization still exists technical bottleneck problem, and except cell durability and cost factor, improving low-temperature startup performance is also one of key issue.
In the time that in fuel cell, local temperature is below the freezing point, the water that operation of fuel cells produces can freeze.Temperature rise in battery is to before zero degree, if the water in Catalytic Layer freezes, electrochemical reaction will stop because of the ice-bound of local reaction region, the formation of ice simultaneously due to volumetric expansion may be serious to the structure generation of membrane electrode assembly destruction.Wherein freezing of the distribution of Temperature Distribution major effect fuel battery inside heat and water, generating rate and the water distribution of electric current distribution major effect water.Therefore, build a fuel cell cold start-up subregion test platform, measure fuel cell cold start-up subregion electric current distribution and Temperature Distribution, probe into fuel cell cold start-up subregion performance under different condition performance and the life-span of improving Proton Exchange Membrane Fuel Cells played to key effect.
In the patent of delivering at present and paper, also not about the content of fuel cell cold start-up subregion performance test aspect, mostly just stress the test of fuel cell cold start-up overall performance.Therefore set up a kind of fuel cell cold start-up subregion Performance Test System, there is very large directive significance for the research such as Changing Pattern, investigation fuel battery inside hydro-thermal distribution character and the hydro-thermal operating conditions of optimizing fuel cell that under the cold start-up of investigation fuel cell, inner material transmission and localized electrochemical reaction are coupled.
Summary of the invention
Object of the present invention is exactly to provide a kind of fuel cell cold start-up subregion Performance Test System and method of testing in order to overcome the defect that above-mentioned prior art exists, current density and the temperature of each subregion of fuel cell when testing cold start-up, have easy to operate, can realize visualization measurement, stability advantages of higher.
Object of the present invention can be achieved through the following technical solutions:
A kind of fuel cell cold start-up subregion Performance Test System, described fuel cell comprises the positive plate connecting successively, membrane electrode and minus plate, described test macro comprises fuel cell, oxygenant feed unit, fuel supply unit, clamping unit, humidifying unit, cooling tube, high-low temperature chamber, subregion test board, load unit, data acquisition unit and data processing unit, described subregion test board substitutes positive plate and is connected with the membrane electrode of fuel cell in the time of test, and clamp by clamping unit, described cooling tube is connected with the minus plate of fuel cell, described fuel cell, subregion test board, clamping unit and cooling tube are all arranged in high-low temperature chamber, described subregion test board, data acquisition unit, data processing unit connects successively, described oxygenant feed unit, fuel supply unit connects respectively humidifying unit, described humidifying unit is connected with cooling tube, described load unit is connected with fuel cell.
Described high-low temperature chamber is for analog fuel battery cold start-up environment.
Described subregion test board comprises upper plate and lower plate, described upper panel surface is carved with the runner for substituting anode, upper plate is split into the subregion of several mutually insulateds, between described each subregion and lower plate, be provided with embedding resistance, described embedding resistance connects respectively subregion and lower plate by metal column, described metal column is connected with data acquisition unit by sample line, and described upper plate below is provided with the temperature and resistance of multiple series connection, and described temperature and resistance is connected with data acquisition unit.
Described embedding resistance number, temperature and resistance number and subregion number are identical.
Described upper plate two ends are provided with the interface for connection data collecting unit.
Described subregion test board is provided with the circular hole for clamping location.
Described clamping unit comprises baffle plate and takes blame for others, takes blame for others and be fixed on baffle interior, the flexible clamping of realizing subregion test board of taking blame for others by control.
A kind of fuel cell cold start-up subregion performance test methods, comprises the following steps:
1) positive plate of subregion test board alternative fuel battery, and be fixed on fuel cell by clamping unit;
2) set the low temperature environment temperature of high-low temperature chamber, and make temperature in high-low temperature chamber reach the low temperature environment temperature of setting;
3) oxygenant feed unit, fuel supply unit provide oxygenant and fuel by humidifying unit and cooling tube to the fuel cell in high-low temperature chamber respectively, and fuel cell connects load unit, normally works;
4) voltage of the two ends pressure drop of the each embedding resistance of data acquisition unit Real-time Collection, each temperature and resistance and flow through the electric current of temperature and resistance, and the signal of collection is transferred to data processing unit;
5) data processing unit is according to the electric current distribution of the each subregion of calculated signals fuel battery inside and the subregion temperature in each moment that receive, exports and shows current density distributing figure and temperature profile.
The electric current distribution of the described each subregion of fuel battery inside obtains according to the computing the resistor value of the two ends pressure drop of each embedding resistance and corresponding embedding resistance.
The computing method of the subregion temperature in described each moment are:
First the galvanometer of inscribing each temperature and resistance voltage during according to this and flow through temperature and resistance calculates the resistance of each temperature and resistance under this temperature spot, then obtains the subregion temperature in this moment by resistance temperature rise formula.
Compared with prior art, the present invention has the following advantages:
1) when the present invention uses subregion test board to measure fuel cell cold start-up, the close and Temperature Distribution of inner each subregion electric current realizes fuel cell current density and Temperature Distribution visualization measurement simultaneously, easy to operate.
2) the present invention utilizes the means such as high-low temperature chamber and cooling tube can simulate fuel cell cold start-up situation under low temperature, not limited by external environment condition.
3) the present invention realizes fuel cell robotization clamping by controlling clamping unit, and clamping pressure is even, easy to operate simultaneously.
Brief description of the drawings
Fig. 1 is the circuit theory diagrams of test macro of the present invention;
Fig. 2 is subregion test plate structure figure;
Fig. 3 is subregion test board cut-open view;
Fig. 4 is the process flow diagram of method of testing of the present invention;
Fig. 5 is fuel of the present invention and the cooling schematic diagram of oxygenant.
In figure: 1, fuel cell; 2, subregion test board; 3, clamping unit; 4, cooling tube; 5, high-low temperature chamber; 6, oxygenant feed unit; 7, fuel supply unit; 8, humidifying unit; 9, data acquisition unit; 10, data processing unit; 11, load unit; 12, membrane electrode; 13, minus plate; 14, gas outlet, A, unreacted fuel and oxygenant; 21, interface; 22, conversion zone; 23, runner; 24, circular hole; 25, temperature and resistance; 26, metal column; 27, sample line; 28, embedding resistance.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.The present embodiment is implemented as prerequisite taking technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of fuel cell cold start-up subregion Performance Test System, described test macro comprises fuel cell 1, oxygenant feed unit 6, fuel supply unit 7, clamping unit 3, humidifying unit 8, cooling tube 4, high-low temperature chamber 5, subregion test board 2, load unit 11, data acquisition unit 9 and data processing unit 10, described fuel cell comprises the positive plate connecting successively, membrane electrode 12 and minus plate 13, described subregion test board 2 substitutes positive plate and is connected with the membrane electrode 12 of fuel cell 1 in the time of test, and clamps by clamping unit 3, and described cooling tube 4 is connected with the minus plate 13 of fuel cell 1, described fuel cell 1, subregion test board 2, clamping unit 3 and cooling tube 4 are all arranged in high-low temperature chamber 5, described subregion test board 2, data acquisition unit 9, data processing unit 10 connects successively, described oxygenant feed unit 6, fuel supply unit 7 connects respectively humidifying unit 8, and described humidifying unit 8 is connected with cooling tube 4, and described load unit 11 is connected with fuel cell 1.Humidifying unit 8 and cooling tube 4 are equipped with two, are connected respectively.This test macro can be simulated fuel cell cold start-up situation under low temperature, and while measuring fuel cell cold start-up, subregion performance parameter, simple to operate, realizes fuel cell current density and Temperature Distribution visualization measurement simultaneously.On fuel cell 1, be connected with the gas outlet 14 for discharging unreacted fuel and oxygenant A.
Described high-low temperature chamber 5, for analog fuel battery cold start-up environment, is put into high-low temperature chamber by fuel cell and is tested.
As shown in Fig. 2-Fig. 3, described subregion test board 2 comprises upper plate and lower plate, and conversion zone 22 and lower plate lower surface that upper plate upper surface contacts with membrane electrode cross gold, and other parts are made up of insulating material.On the conversion zone 22 of described upper panel surface, be carved with the runner 23 for substituting anode, upper plate is split into the subregion of several mutually insulateds, make between scoring area the electric current can cross flow, between described each subregion and lower plate, be provided with embedding resistance 28, described embedding resistance 28 connects respectively subregion and lower plate by metal column 26, described metal column 26 is connected with data acquisition unit 9 by sample line 27, described upper plate below is provided with the temperature and resistance 25 of multiple series connection, described temperature and resistance 25 is connected with data acquisition unit 9, temperature and resistance discord upper and lower plates is connected.Described embedding resistance number, temperature and resistance number and subregion number are identical, are n.
Described upper plate two ends are provided with the interface 21 for connection data collecting unit 9.Subregion test board 2 is provided with two circular holes 24 for clamping location.
Described clamping unit 3 comprises baffle plate and takes blame for others, takes blame for others and be fixed on baffle interior, the flexible clamping of realizing subregion test board of taking blame for others by control.
As shown in Figure 4, a kind of fuel cell cold start-up subregion performance test methods, comprises the following steps:
1) positive plate of subregion test board 2 alternative fuel batteries 1, and be fixed on fuel cell 1 by clamping unit 3;
2) set the low temperature environment temperature of high-low temperature chamber 5, and make temperature in high-low temperature chamber 5 reach the low temperature environment temperature of setting;
3) oxygenant feed unit 6, fuel supply unit 7 provide oxygenant and fuel by humidifying unit 8 and cooling tube 4 to the fuel cell 1 in high-low temperature chamber 5 respectively, and fuel cell 1 connects load unit 11, normally works;
4) voltage of the each embedding resistance of data acquisition unit 9 Real-time Collection two ends pressure drop, each temperature and resistance and flow through the electric current of temperature and resistance, and the signal of collection is transferred to data processing unit 10;
5) data processing unit 10 is according to the electric current distribution of the each subregion of calculated signals fuel battery inside and the subregion temperature in each moment that receive, exports and shows current density distributing figure and temperature profile.
The electric current distribution of the described each subregion of fuel battery inside obtains according to the computing the resistor value of the two ends pressure drop of each embedding resistance and corresponding embedding resistance.
The computing method of the subregion temperature in described each moment are: in the time of operation of fuel cells, data acquisition unit powers to the power supply of wherein arranging to temperature and resistance, because temperature and resistance raises and rises with temperature, the galvanometer that is gathered each temperature and resistance voltage and flow through temperature and resistance by data acquisition unit calculates the resistance of each temperature and resistance under this temperature spot, then obtains the subregion temperature in this moment by resistance temperature rise formula.
Fig. 5 is fuel of the present invention and the cooling schematic diagram of oxygenant.Snakelike cooling tube is placed in high-low temperature chamber, and fuel and oxygenant intake air temperature T1, drop to T by temperature after cooling tube
2, identical with high-low temperature chamber internal temperature, fuel cell air inlet under simulation low temperature environment.For 25cm
2monocell, maximum gas flow 3L/min, the about 3g/min of mass rate, brings heat Q by air
1:
Q
1＝c×m
g×AT＝c×m
g×(T
1-T
2)
Oxygenant cooling tube internal diameter
cartridge internal diameter
the aluminum alloy materials that cooling tube is used, coefficient of heat conductivity 162W/ (m*K), because cooling tube is outward forced convertion, coefficient of heat conductivity 20～100W/ (m*K) is bad to be determined, so calculate by minimum thermal conductivity, calculate (Q2=Q1) by diabatic process and draw oxygenant cooling tube substantial distance 1.0416m, fuel cooling tube substantial distance 1.38mm.For the sake of security, the actual cooling pipe range 2.3m of oxygenant that adopts, the cooling pipe range 3.6m of fuel, meets and calculates heat transfer requirement.The fluid heat transferring formula adopting:
Claims (10)
1. a fuel cell cold start-up subregion Performance Test System, described fuel cell comprises the positive plate connecting successively, membrane electrode and minus plate, it is characterized in that, described test macro comprises fuel cell, oxygenant feed unit, fuel supply unit, clamping unit, humidifying unit, cooling tube, high-low temperature chamber, subregion test board, load unit, data acquisition unit and data processing unit, described subregion test board substitutes positive plate and is connected with the membrane electrode of fuel cell in the time of test, and clamp by clamping unit, described cooling tube is connected with the minus plate of fuel cell, described fuel cell, subregion test board, clamping unit and cooling tube are all arranged in high-low temperature chamber, described subregion test board, data acquisition unit, data processing unit connects successively, described oxygenant feed unit, fuel supply unit connects respectively humidifying unit, described humidifying unit is connected with cooling tube, described load unit is connected with fuel cell.
2. a kind of fuel cell cold start-up subregion Performance Test System according to claim 1, is characterized in that, described high-low temperature chamber is for analog fuel battery cold start-up environment.
3. a kind of fuel cell cold start-up subregion Performance Test System according to claim 1, it is characterized in that, described subregion test board comprises upper plate and lower plate, described upper panel surface is carved with the runner for substituting anode, upper plate is split into the subregion of several mutually insulateds, between described each subregion and lower plate, be provided with embedding resistance, described embedding resistance connects respectively subregion and lower plate by metal column, described metal column is connected with data acquisition unit by sample line, described upper plate below is provided with the temperature and resistance of multiple series connection, described temperature and resistance is connected with data acquisition unit.
4. a kind of fuel cell cold start-up subregion Performance Test System according to claim 3, is characterized in that, described embedding resistance number, temperature and resistance number and subregion number are identical.
5. a kind of fuel cell cold start-up subregion Performance Test System according to claim 3, is characterized in that, described upper plate two ends are provided with the interface for connection data collecting unit.
6. a kind of fuel cell cold start-up subregion Performance Test System according to claim 1, is characterized in that, described subregion test board is provided with the circular hole for clamping location.
7. a kind of fuel cell cold start-up subregion Performance Test System according to claim 1, is characterized in that, described clamping unit comprises baffle plate and takes blame for others, takes blame for others and be fixed on baffle interior, the flexible clamping of realizing subregion test board of taking blame for others by control.
8. a fuel cell cold start-up subregion performance test methods as claimed in claim 3, is characterized in that, comprises the following steps:
1) positive plate of subregion test board alternative fuel battery, and be fixed on fuel cell by clamping unit;
2) set the low temperature environment temperature of high-low temperature chamber, and make temperature in high-low temperature chamber reach the low temperature environment temperature of setting;
3) oxygenant feed unit, fuel supply unit provide oxygenant and fuel by humidifying unit and cooling tube to the fuel cell in high-low temperature chamber respectively, and fuel cell connects load unit, normally works;
4) voltage of the two ends pressure drop of the each embedding resistance of data acquisition unit Real-time Collection, each temperature and resistance and flow through the electric current of temperature and resistance, and the signal of collection is transferred to data processing unit;
5) data processing unit is according to the electric current distribution of the each subregion of calculated signals fuel battery inside and the subregion temperature in each moment that receive, exports and shows current density distributing figure and temperature profile.
9. a kind of fuel cell cold start-up subregion performance test methods according to claim 8, is characterized in that, the electric current distribution of the described each subregion of fuel battery inside obtains according to the computing the resistor value of the two ends pressure drop of each embedding resistance and corresponding embedding resistance.
10. a kind of fuel cell cold start-up subregion performance test methods according to claim 8, is characterized in that, the computing method of the subregion temperature in described each moment are:
First the galvanometer of inscribing each temperature and resistance voltage during according to this and flow through temperature and resistance calculates the resistance of each temperature and resistance under this temperature spot, then obtains the subregion temperature in this moment by resistance temperature rise formula.
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| CN104459423A (en) * | 2014-12-31 | 2015-03-25 | 芜湖赛宝信息产业技术研究院有限公司 | Method for successively determining defects of mechanical and electrical product in high-temperature reliability strengthening test |
| CN107681180A (en) * | 2017-09-21 | 2018-02-09 | 电子科技大学 | A kind of device for fuel cell Detection ＆ Controling |
| CN108414939A (en) * | 2018-01-23 | 2018-08-17 | 同济大学 | A kind of fuel cell pile low-temperature cool starting testing research platform |
| CN108562783A (en) * | 2018-04-13 | 2018-09-21 | 武汉理工大学 | A kind of subregion test system and method for cold boot of fuel cell current density and temperature |
| CN109244504A (en) * | 2018-09-18 | 2019-01-18 | 北京久安通氢能科技有限公司 | A kind of cooling system and its control method of the test of fuel cell cold-starting |
| CN111199110A (en) * | 2020-01-13 | 2020-05-26 | 清华大学 | Method and system for predicting low-temperature starting performance of fuel cell |
| CN111308359A (en) * | 2020-03-31 | 2020-06-19 | 上海交通大学 | Multifunctional on-line test system for large-area fuel cell |
| CN111525160A (en) * | 2020-04-22 | 2020-08-11 | 电子科技大学 | Fuel cell current density partition test system and method |
| CN112068019A (en) * | 2020-09-08 | 2020-12-11 | 清华大学 | Flat-plate SOFC current density distributed end plate test structure and test method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459423A (en) * | 2014-12-31 | 2015-03-25 | 芜湖赛宝信息产业技术研究院有限公司 | Method for successively determining defects of mechanical and electrical product in high-temperature reliability strengthening test |
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| CN107681180A (en) * | 2017-09-21 | 2018-02-09 | 电子科技大学 | A kind of device for fuel cell Detection ＆ Controling |
| CN107681180B (en) * | 2017-09-21 | 2020-03-24 | 电子科技大学 | Device for detecting and controlling fuel cell |
| CN108414939A (en) * | 2018-01-23 | 2018-08-17 | 同济大学 | A kind of fuel cell pile low-temperature cool starting testing research platform |
| CN108562783A (en) * | 2018-04-13 | 2018-09-21 | 武汉理工大学 | A kind of subregion test system and method for cold boot of fuel cell current density and temperature |
| CN109244504A (en) * | 2018-09-18 | 2019-01-18 | 北京久安通氢能科技有限公司 | A kind of cooling system and its control method of the test of fuel cell cold-starting |
| CN111199110A (en) * | 2020-01-13 | 2020-05-26 | 清华大学 | Method and system for predicting low-temperature starting performance of fuel cell |
| CN111308359A (en) * | 2020-03-31 | 2020-06-19 | 上海交通大学 | Multifunctional on-line test system for large-area fuel cell |
| CN111525160A (en) * | 2020-04-22 | 2020-08-11 | 电子科技大学 | Fuel cell current density partition test system and method |
| CN112068019A (en) * | 2020-09-08 | 2020-12-11 | 清华大学 | Flat-plate SOFC current density distributed end plate test structure and test method |
| CN112068019B (en) * | 2020-09-08 | 2021-05-28 | 清华大学 | Flat-plate SOFC current density distributed end plate test structure and test method |
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