CN110957507A - Fuel cell gas supply device and control method thereof - Google Patents
Fuel cell gas supply device and control method thereof Download PDFInfo
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- CN110957507A CN110957507A CN201911175623.1A CN201911175623A CN110957507A CN 110957507 A CN110957507 A CN 110957507A CN 201911175623 A CN201911175623 A CN 201911175623A CN 110957507 A CN110957507 A CN 110957507A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
- H01M8/04126—Humidifying
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
- H01M8/04425—Pressure; Ambient pressure; Flow at auxiliary devices, e.g. reformers, compressors, burners
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to a fuel cell gas supply device and a control method thereof. The gas supply device includes: the air compressor, the humidifying unit and the electric pile are connected in sequence, and a first pipeline, a second pipeline and a third pipeline are related; a first bypass passage and a second bypass passage are respectively arranged between the first pipeline and the second pipeline and between the first pipeline and the third pipeline; a first flow regulator and a second flow regulator are respectively arranged on the first bypass passage and the second bypass passage; and the control unit is used for monitoring the pressure flow of the air compressor and the humidity of the electric pile and controlling the air compressor, the first flow regulator and the second flow regulator. The gas supply device is designed through an integrated pipeline, the problem of air compressor surge and the problem of flooding caused by overlarge pile humidity can be solved simultaneously, the pipeline design is simple, and the system integration degree is high.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a fuel cell gas supply device and a control method thereof.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electric energy, and is also called an electrochemical generator, which is a fourth power generation technology following hydroelectric power generation, thermal power generation, and atomic power generation. The fuel cell can directly convert chemical energy into electric energy in an isothermal electrochemical mode without a heat engine process and without the restriction of Carnot cycle, so that the fuel cell has the characteristics of high energy conversion efficiency, no noise, no pollution and safety, and is a power generation technology with the greatest development prospect. Among them, the hydrogen fuel cell is the most popular research object, and its working principle is: hydrogen is sent to an anode plate of the hydrogen fuel cell, and one electron in hydrogen atoms is separated out under the action of a catalyst; the hydrogen ions losing electrons pass through the proton exchange membrane to reach the cathode plate of the hydrogen fuel cell, while the electrons which can not pass through the proton exchange membrane can only pass through an external circuit to reach the cathode plate of the hydrogen fuel cell, so that current is generated in the external circuit; the electrons reaching the cathode plate recombine with oxygen atoms and hydrogen ions into water. Since oxygen supplied to the cathode plate can be obtained from the air, electric power can be continuously supplied as long as hydrogen is continuously supplied to the anode plate while air is supplied to the cathode plate and the generated water is timely taken away.
The air compressor is used as a key part of the air supply device of the fuel cell and is used for supplying air to the electric pile of the fuel cell, and the working capacity of the air compressor must meet the air supply requirement of the fuel cell. Therefore, the air supply amount of the air compressor needs to be matched with the working condition of the fuel cell. However, when the surge condition occurs in the air compressor, a loud noise is generated and the life of the air compressor is shortened, and the overall efficiency of the fuel cell is also reduced.
Fig. 1 shows a performance curve of a centrifugal air compressor. Due to surge and blockage, the air compressor can only control the pressure and flow of air within an operational range, which refers to the area enclosed by the surge, overspeed and blockage curves in fig. 1. The operable range surrounded by the three curves limits the flow of the centrifugal air compressor. In particular, the surge curve limits the operation of the air compressor at low flow and high pressure ratio, which is extremely disadvantageous for low power operation of the fuel cell.
Furthermore, the proton exchange membrane in a hydrogen fuel cell stack needs to be operated at a certain humidity value so that the ionic resistance of the proton exchange membrane is sufficiently low to allow efficient conduction of protons. However, when the humidity value in the stack is too high, water drops in the stack gradually increase to block a flow channel in the stack, so that local flooding inside the stack is caused, the reaction efficiency of the stack is further influenced, and the service life of the hydrogen fuel cell is reduced.
In view of the above problems, the prior art discloses some solutions. For example, CN104051757A discloses a remedy for air flow errors in fuel cell systems, which is to control the relative humidity of the fuel cell stack by detecting errors in cathode air flow rate in the stack, using high frequency resistance measurements from high frequency resistance sensors. But this method does not solve the problem of compressor surge. CN105226308A discloses a fuel cell system and a control method thereof, which provides a bypass pipe and a valve, and supplies air supplied from an air compressor in a required proportion to a fuel cell stack by a bypass action, and the other part of the air is directly discharged out of the stack system, thereby avoiding the problem of air compressor surge. In addition, the system can also adjust the flow of wet air into the stack, thereby avoiding flooding problems. However, the system cannot solve the problem of flooding when the wet air flow demand of the electric pile is high, and cannot simultaneously solve the problems of air compressor surge and electric pile flooding under complex and variable working conditions.
Although some methods are provided for solving the problems of air compressor surge and galvanic pile flooding in the air supply device in the prior art, the problems of air compressor surge and galvanic pile flooding are not solved simultaneously aiming at complex and variable working conditions. Therefore, there is a need to develop an efficient fuel cell gas supply apparatus and a control method thereof.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a fuel cell gas supply apparatus and a control method thereof. The gas supply device includes: the air compressor, the humidifying unit and the electric pile are connected in sequence, and a first pipeline, a second pipeline and a third pipeline are related; a first bypass passage and a second bypass passage are respectively arranged between the first pipeline and the second pipeline and between the first pipeline and the third pipeline; a first flow regulator and a second flow regulator are respectively arranged on the first bypass passage and the second bypass passage; and the control unit is used for monitoring the pressure flow of the air compressor and the humidity of the electric pile and controlling the air compressor, the first flow regulator and the second flow regulator. The gas supply device is designed through an integrated pipeline, the problem of air compressor surge and the problem of flooding caused by overlarge pile humidity can be solved simultaneously, the pipeline design is simple, and the system integration degree is high.
In order to achieve the purpose, the invention adopts the following technical scheme:
an object of the present invention is to provide a fuel cell gas supply apparatus, including:
the air compressor, the humidifying unit and the electric pile are connected in sequence;
a first pipeline is arranged between the air compressor and the humidifying unit;
the first outlet of the humidifying unit is connected with the air inlet of the electric pile through a second pipeline;
the second outlet of the humidifying unit is provided with a third pipeline for exhausting air out of the fuel cell;
a first bypass passage and a second bypass passage are respectively arranged between the first pipeline and the second pipeline and between the first pipeline and the third pipeline;
a first flow regulator and a second flow regulator are respectively arranged on the first bypass passage and the second bypass passage;
and the control unit is used for monitoring the pressure flow of the air compressor and the humidity of the electric pile and controlling the air compressor, the first flow regulator and the second flow regulator.
The air supply device provided by the invention is provided with the first bypass passage and the second bypass passage, and is also provided with the first flow regulator and the second flow regulator which are controlled by the control unit, so that redundant air of the air compressor can be bypassed, and non-humidified dry air can be introduced into the electric pile, thereby simultaneously solving the problems of surge of the air compressor and flooding of the electric pile.
As a preferable aspect of the present invention, the gas supply device further includes: and the fourth pipeline is used for connecting the air outlet of the electric pile and the second inlet of the humidifying unit.
The fourth pipeline provided by the invention can lead air with high humidity in the galvanic pile into the humidifying unit, thereby providing possibility for recycling moisture in the humidifying unit.
As a preferable aspect of the present invention, the gas supply device further includes:
and the intercooler is arranged on the first pipeline and used for cooling the air of the first pipeline, the first bypass and the second bypass.
The intercooler provided by the invention can cool and radiate high-temperature gas from the air compressor, so that the temperature of air entering the galvanic pile is not too high, and the safe operation of the galvanic pile is further ensured.
And the electronic throttle valve is arranged on the third pipeline.
The electronic throttle valve provided by the invention can separate the fuel cell system from the external atmosphere, thereby ensuring the high-pressure environment of the fuel cell system.
As a preferable aspect of the present invention, a first proportional valve and a second proportional valve are provided in the first bypass passage and the second bypass passage, respectively.
The invention adopts the proportional valve as the flow regulator to control the air flow of the first bypass passage and the second bypass passage, thereby not only having good control effect, but also saving cost.
As a preferable technical scheme of the invention, the humidifying unit comprises a supply part and an exhaust part.
The supply part comprises a first outlet of the humidifying unit and is connected with the first pipeline and the second pipeline.
The exhaust part comprises a second inlet and a second outlet of the humidifying unit and is connected with the third pipeline and the fourth pipeline.
The humidifying unit provided by the invention is provided with the supply part and the exhaust part simultaneously, so that not only can air entering the galvanic pile be humidified, but also air with high humidity in the galvanic pile can be returned to the humidifying unit to humidify dry air, and the cyclic utilization of moisture is realized.
A second object of the present invention is to provide a control method for an air supply apparatus according to the first object, the control method comprising the steps of:
(a) the control unit judges whether the air compressor is in a surge interval or not and whether the humidity value of the electric pile is higher than a limit humidity value or not by analyzing a monitoring result;
(b) and (b) according to the judgment result of the step (a), the control unit correspondingly controls the air compressor, the first flow regulator and the second flow regulator.
The control method provided by the invention can quickly and accurately realize the regulation and control of the air flow through monitoring, judging and controlling, thereby simultaneously solving the problems of air compressor surge and galvanic pile flooding.
The surge interval of the air compressor can refer to the performance curve of the centrifugal air compressor shown in figure 1. The operable range of the centrifugal air compressor is the area surrounded by the surge curve, the overspeed curve and the blockage curve in fig. 1, and the area on the left side of the surge curve is the surge interval, which corresponds to the condition that the air compressor is in a low flow and high pressure ratio, and the system life of the fuel cell is seriously influenced.
The limit humidity value of the galvanic pile refers to the maximum humidity value which can be borne by the galvanic pile under normal operation, and is different due to the structural difference of different galvanic piles. The range of the limiting humidity value is generally 80 to 100%.
As one of the conditions to be solved by the present invention, the control method of the first condition is:
(a1) the control unit judges that the air compressor is in a surge interval and the humidity value of the electric pile is higher than a limit humidity value by analyzing a monitoring result;
(b1) according to the judgment result of the step (a1), the control unit increases the pressure flow of the air compressor, opens the first flow regulator and the second flow regulator, and regulates the corresponding opening degrees of the first flow regulator and the second flow regulator.
As one of the conditions to be solved by the present invention, the control method of the second condition is:
(a2) the control unit judges that the air compressor is in a surge interval through analyzing a monitoring result, but the humidity value of the electric pile is not higher than a limit humidity value;
(b2) according to the judgment result of the step (a2), the control unit increases the pressure flow rate of the air compressor, closes the first flow regulator, opens the second flow regulator and regulates the corresponding opening degree.
As one of the conditions to be solved by the present invention, the control method of the third condition is:
(a3) the control unit judges that the air compressor is not in a surge interval but the humidity value of the electric pile is higher than a limit humidity value by analyzing a monitoring result;
(b3) according to the judgment result of the step (a3), the control unit opens the first flow regulator and adjusts the corresponding opening degree, and closes the second flow regulator.
As one of the conditions to be solved by the present invention, the control method of the fourth condition is:
(a4) the control unit judges that the air compressor is not in a surge interval and the humidity value of the electric pile is not higher than a limit humidity value by analyzing a monitoring result;
(b4) the control unit turns off the first and second flow regulators according to the judgment result of the step (a 4).
Compared with the prior art, the invention has at least the following beneficial effects:
(1) the air supply device provided by the invention adopts a highly integrated pipeline and valve design, can simultaneously solve the problems of air compressor surge and water flooding caused by overlarge humidity of the electric pile, and has simple pipeline design and high integration degree;
(2) the control method provided by the invention has a simple control process, and can quickly and accurately realize the regulation and control of the air flow.
Drawings
Fig. 1 shows a performance curve of a centrifugal air compressor;
FIG. 2 is a schematic diagram of a fuel cell gas supply provided by the present invention;
FIG. 3 is a flow chart of a method of controlling a fuel cell gas supply apparatus according to the present invention;
in the figure: 1-an air filter; 2-a flow meter; 3, an air compressor; 4-a pressure sensor; 5-an intercooler; 6-a humidifying unit; 7-electric pile; 8-electronic throttle valve; 9-a control unit; 10-a first proportional valve; 11-a second proportional valve; 12-a first conduit; 13-a second conduit; 14-a fourth line; 15-a third line; 16-a first bypass; 17-second bypass path.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As shown in fig. 2, in the fuel cell air supply device according to the embodiment of the present invention, air from an air filter 1 enters an air compressor 3 through a flow meter 2 to be compressed, measures a pressure ratio of the air compressor through a pressure sensor 4, and then enters an intercooler 5 to be cooled; the cooled air may enter the supply of the humidification unit 6 through the first conduit 12, or may enter the first bypass passage 16 and the second bypass passage 17; the cooling air entering the supply part of the humidifying unit enters a second pipeline 13 through a first outlet and then enters the electric pile 7 through an air inlet of the electric pile; the air from the stack 7 enters the fourth pipeline 14 through an air outlet and then enters the exhaust part through a second inlet of the humidifying unit 6; the air from the exhaust part enters the third pipeline 15 through the second outlet and then is discharged out of the fuel cell through the electronic throttle valve 8; when the first proportional valve 10 is open, the cooled air enters the first bypass 16, may bypass the humidification unit 6 and directly enter the second line 13, and enters the stack 7 as dry air; when the second proportional valve 11 is opened, the cooled air will pass through the second bypass channel 17 directly into the third conduit 15 and out of the fuel cell.
Fig. 3 shows a flow executed by a fuel cell air supply device control method according to an embodiment of the present invention, and after the flow is started, it will be monitored whether the air compressor is in a surge region and whether the humidity value of the stack is higher than a limit humidity value; when the judgment result aiming at the air compressor is yes, starting a corresponding control program, increasing the pressure flow of the air compressor, opening a second proportional valve and adjusting the corresponding opening degree so as to enable the air compressor to be separated from the surge interval; when the judgment result aiming at the air compressor is negative, closing the second proportional valve; when the judgment result aiming at the humidity value of the galvanic pile is yes, starting a corresponding control program, opening a first proportional valve and adjusting the corresponding opening degree, so that the humidity value of the galvanic pile is lower than the limit humidity value; and when the judgment result of the stack humidity value is negative, closing the first proportional valve.
Example 1
The present embodiment provides a control method of a fuel cell gas supply apparatus, which employs the gas supply apparatus shown in fig. 2 and follows the flow shown in fig. 3.
The control unit 18 monitors that the pressure ratio of the air compressor 3 is 2.9, the flow value is 150g/s, and simultaneously monitors that the humidity value of the electric pile 7 is 100%, and a judgment result that the air compressor 3 is in a surge interval and the humidity value of the electric pile 7 is higher than a limit humidity value by 95% is obtained through judgment. The control unit 18 controls the air compressor 3 to increase the pressure flow to 160g/s, simultaneously opens the second proportional valve 11 and adjusts the opening degree to 6%, opens the first proportional valve 10 and adjusts the opening degree to 80%, thereby introducing part of the dry air into the cell stack 7, reducing the humidity value of the cell stack 7 to 95%, and discharging the surplus air out of the fuel cell, thereby avoiding the surge problem of the air compressor 3.
Example 2
The present embodiment provides a control method of a fuel cell gas supply apparatus, which employs the gas supply apparatus shown in fig. 2 and follows the flow shown in fig. 3.
The control unit 18 monitors that the pressure ratio of the air compressor 3 is 1.3, the flow value is 50g/s, and simultaneously monitors that the humidity value of the electric pile 7 is 70%, and a judgment result that the air compressor 3 is in a surge interval but the humidity value of the electric pile 7 is not higher than the limit humidity value by 95% is obtained after judgment. The control unit 18 controls the air compressor 3 to increase the pressure flow to 70g/s, and simultaneously opens the second proportional valve 11 and adjusts the opening to 30%, and closes the first proportional valve 10, thereby discharging the excess air out of the fuel cell and avoiding the surge problem of the air compressor 3.
Example 3
The present embodiment provides a control method of a fuel cell gas supply apparatus, which employs the gas supply apparatus shown in fig. 2 and follows the flow shown in fig. 3.
The control unit 18 monitors that the pressure ratio of the air compressor 3 is 3.0, the flow value is 200g/s, and simultaneously monitors that the humidity value of the electric pile 7 is 100%, and a judgment result that the air compressor 3 is not in the surge interval but the humidity value of the electric pile 7 is higher than the limit humidity value by 95% is obtained through judgment. The control unit 18 opens the first proportional valve 10 and adjusts the opening to 100%, and closes the second proportional valve 11, so that part of the dry air is introduced into the stack 7, and the humidity value of the stack 7 is reduced to 95%.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A fuel cell gas supply apparatus, comprising:
the air compressor, the humidifying unit and the electric pile are connected in sequence;
a first pipeline is arranged between the air compressor and the humidifying unit;
the first outlet of the humidifying unit is connected with the air inlet of the electric pile through a second pipeline;
the second outlet of the humidifying unit is provided with a third pipeline for exhausting air out of the fuel cell;
a first bypass passage and a second bypass passage are respectively arranged between the first pipeline and the second pipeline and between the first pipeline and the third pipeline;
a first flow regulator and a second flow regulator are respectively arranged on the first bypass passage and the second bypass passage;
and the control unit is used for monitoring the pressure flow of the air compressor and the humidity of the electric pile and controlling the air compressor, the first flow regulator and the second flow regulator.
2. The gas supply device according to claim 1, further comprising:
and the fourth pipeline is used for connecting the air outlet of the electric pile and the second inlet of the humidifying unit.
3. The gas supply device according to claim 1 or 2, further comprising:
the intercooler is arranged on the first pipeline and used for cooling the air of the first pipeline, the first bypass passage and the second bypass passage;
and the electronic throttle valve is arranged on the third pipeline.
4. The air supply device according to any one of claims 1 to 3, characterized in that a first proportional valve and a second proportional valve are provided on the first bypass passage and the second bypass passage, respectively.
5. The gas supply apparatus according to any one of claims 1 to 4, wherein the humidification unit includes a supply portion and an exhaust portion;
the supply part comprises a first outlet of the humidifying unit and is connected with the first pipeline and the second pipeline;
the exhaust part comprises a second inlet and a second outlet of the humidifying unit and is connected with the third pipeline and the fourth pipeline.
6. A control method of an air supply device according to any one of claims 1 to 5, characterized by comprising the steps of:
(a) the control unit judges whether the air compressor is in a surge interval or not and whether the humidity value of the electric pile is higher than a limit humidity value or not by analyzing a monitoring result;
(b) and (b) according to the judgment result of the step (a), the control unit correspondingly controls the air compressor, the first flow regulator and the second flow regulator.
7. The control method of claim 6, comprising a first operating condition:
(a1) the control unit judges that the air compressor is in a surge interval and the humidity value of the electric pile is higher than a limit humidity value by analyzing a monitoring result;
(b1) according to the judgment result of the step (a1), the control unit increases the pressure flow of the air compressor, opens the first flow regulator and the second flow regulator, and regulates the corresponding opening degrees of the first flow regulator and the second flow regulator.
8. The control method of claim 6, comprising a second operating condition:
(a2) the control unit judges that the air compressor is in a surge interval through analyzing a monitoring result, but the humidity value of the electric pile is not higher than a limit humidity value;
(b2) according to the judgment result of the step (a2), the control unit increases the pressure flow rate of the air compressor, closes the first flow regulator, opens the second flow regulator and regulates the corresponding opening degree.
9. The control method of claim 6, comprising a third operating condition:
(a3) the control unit judges that the air compressor is not in a surge interval but the humidity value of the electric pile is higher than a limit humidity value by analyzing a monitoring result;
(b3) according to the judgment result of the step (a3), the control unit opens the first flow regulator and adjusts the corresponding opening degree, and closes the second flow regulator.
10. The control method of claim 6, comprising a fourth operating condition:
(a4) the control unit judges that the air compressor is not in a surge interval and the humidity value of the electric pile is not higher than a limit humidity value by analyzing a monitoring result;
(b4) the control unit turns off the first and second flow regulators according to the judgment result of the step (a 4).
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| CN201911175623.1A CN110957507A (en) | 2019-11-26 | 2019-11-26 | Fuel cell gas supply device and control method thereof |
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| CN201911175623.1A CN110957507A (en) | 2019-11-26 | 2019-11-26 | Fuel cell gas supply device and control method thereof |
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| CN113036177A (en) * | 2021-02-04 | 2021-06-25 | 深圳市氢蓝时代动力科技有限公司 | Fuel cell air path control system and fuel cell |
| JP2021114368A (en) * | 2020-01-16 | 2021-08-05 | トヨタ自動車株式会社 | Fuel cell system |
| CN113707911A (en) * | 2021-08-25 | 2021-11-26 | 中国第一汽车股份有限公司 | Gas supply system and gas supply method of fuel cell |
| CN113745573A (en) * | 2020-05-27 | 2021-12-03 | 丰田自动车株式会社 | Fuel cell system |
| CN115295826A (en) * | 2022-07-25 | 2022-11-04 | 上海杰宁新能源科技发展有限公司 | Fuel cell control method, system, storage medium and intelligent terminal |
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| CN110416577A (en) * | 2019-09-26 | 2019-11-05 | 潍柴动力股份有限公司 | Fuel battery air circuit, air extractor control method and controller |
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