CN114824385B - Fuel cell hydrogen supply system and control method - Google Patents
Fuel cell hydrogen supply system and control method Download PDFInfo
- Publication number
- CN114824385B CN114824385B CN202210412910.5A CN202210412910A CN114824385B CN 114824385 B CN114824385 B CN 114824385B CN 202210412910 A CN202210412910 A CN 202210412910A CN 114824385 B CN114824385 B CN 114824385B
- Authority
- CN
- China
- Prior art keywords
- fuel cell
- hydrogen
- cell stack
- inlet
- humidity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to the technical field of fuel cells, and discloses a hydrogen supply system of a fuel cell and a control method. The system comprises a control module, at least two ejectors and a fuel cell stack, wherein the ejectors are provided with a first ejection inlet and a second ejection inlet, and the ejectors are used for outputting hydrogen accessed from the first ejection inlet and the second ejection inlet; the anode gas inlet of the fuel cell stack is correspondingly connected with the output end of the ejector, the anode gas outlets of the fuel cell stacks are mutually communicated, and the anode gas outlets of the fuel cell stacks output excessive hydrogen to the second ejection inlets; the control module regulates and controls the hydrogen mixing proportion of the anode gas inlet of the fuel cell stack according to the internal hydrogen humidity of the fuel cell stack. The invention enables hydrogen to circulate among the fuel cell stacks by connecting the fuel cell stacks, and can realize mutual active adjustment among the stacks by utilizing the fuel cell stacks with abnormal adjustment of the fuel cell stacks in normal operation.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a hydrogen supply system of a fuel cell and a control method.
Background
The fuel cell system comprises a hydrogen circulation subsystem which continuously provides hydrogen with certain pressure and flow to the electric pile to ensure the high-efficiency operation of the electric pile, so that the hydrogen circulation system has great influence on the efficiency, reliability, service life and the like of the fuel cell.
The hydrogen supply system provides excess pure hydrogen to the anode of the fuel cell, and after the anode has reacted, unreacted hydrogen is typically vented from the anode exhaust. The hydrogen discharged from the anode of the fuel cell stack is generally processed in three modes of flow mode, dead-end mode and circulation mode. In the circulation mode, the hydrogen exhausted from the anode directly enters the atmosphere through the exhaust valve, so that the waste of the hydrogen is caused and the environment is polluted; the dead-end mode is to close the exhaust valve of the hydrogen, in the mode, excessive hydrogen can completely react, but the generated water vapor can be continuously accumulated, so that the flooding phenomenon of the fuel cell is easily caused, and the efficiency and the service life of the fuel cell are reduced; the circulation mode is to convey the unreacted hydrogen to the anode hydrogen inlet again, and reuse the hydrogen to improve the efficiency of the fuel cell stack, so that the circulation mode is one development direction of the hydrogen supply system.
However, in the existing hydrogen supply system, a single fuel cell stack is adopted to perform hydrogen circulation treatment, the system of the single fuel cell stack cannot realize active regulation of hydrogen supply, when the gas flow is reduced, the performance of an ejector is also declined, in addition, after the hydrogen is discharged from the fuel cell stack, the hydrogen needs to be subjected to steam-water separation treatment, and when the hydrogen is conveyed to an anode inlet of the fuel cell stack again, humidification treatment is also performed, so that the working procedures are numerous.
Disclosure of Invention
The present invention is directed to a hydrogen supply system for a fuel cell and a control method thereof, which solve one or more of the technical problems of the prior art, and at least provide a beneficial choice or creation condition.
In a first aspect, there is provided a hydrogen supply system for a fuel cell, comprising:
the device comprises at least two ejectors, wherein the ejectors are provided with a first ejecting inlet and a second ejecting inlet, the first ejecting inlet is used for being connected with a dry hydrogen source, and the ejectors are used for outputting hydrogen connected from the first ejecting inlet and the second ejecting inlet;
the fuel cell comprises at least two fuel cell stacks, wherein an anode gas inlet of one fuel cell stack is correspondingly connected with an output end of an ejector, anode gas outlets of the fuel cell stacks are mutually communicated, and when the fuel cell stacks react, the anode gas outlets of the fuel cell stacks output excessive hydrogen to the second ejection inlets;
and the control module regulates and controls the hydrogen mixing proportion of the anode air inlet of the fuel cell stack according to the internal hydrogen humidity of the fuel cell stack.
As an improvement of the above embodiment, a first air flow valve is disposed between the first injection inlet and the hydrogen source, and a second air flow valve is disposed between the second injection inlet and the anode outlet of the fuel cell stack.
As an improvement of the above embodiment, the fuel cell hydrogen supply system further includes an impedance detection module that detects a membrane electrode resistance of the fuel cell stack, and the control module determines an internal hydrogen humidity of the fuel cell stack based on the detected membrane electrode resistance.
As a modification of the above embodiment, the anode outlet of the fuel cell stack is provided with an exhaust branch provided with an exhaust valve.
As an improvement of the above embodiment, the first injection inlet is connected with a pressure regulator, the anode gas inlet of the fuel cell stack is provided with a pressure sensor, and the controller regulates and controls the pressure regulator according to the air pressure detection data of the pressure sensor.
As a modification of the above embodiment, a temperature sensor and a humidity sensor are provided between the first injection inlet and the pressure regulator.
As an improvement of the above embodiment, the anode gas inlet and the anode gas outlet of the fuel cell stack are respectively provided with a humidity sensor, and the control module regulates and controls the hydrogen mixing ratio of the anode gas inlet of the fuel cell stack according to the humidity detection data of the anode gas inlet and the anode gas outlet.
In a second aspect, there is provided a fuel cell hydrogen supply method implemented by the fuel cell hydrogen supply system of the first aspect, the fuel cell hydrogen supply method comprising the steps of:
acquiring the internal hydrogen humidity of each fuel cell stack;
judging whether the internal hydrogen humidity of the fuel cell stack is within a humidity setting range;
if not, regulating the reaction rate of other fuel cell stacks according to the deviation degree of the hydrogen humidity in the abnormal fuel cell stacks.
As an improvement of the above embodiment, the reaction rate of other fuel cell stacks is regulated according to the deviation degree of the hydrogen humidity inside the abnormal fuel cell stack, specifically including the following steps:
when the internal hydrogen humidity of the abnormal fuel cell stack is lower than a humidity setting range, controlling other fuel cell stacks to improve the reaction rate; and when the internal hydrogen humidity of the abnormal fuel cell stack is higher than the humidity setting range, controlling other fuel cell stacks to reduce the reaction rate.
As an improvement of the above embodiment, the fuel cell hydrogen supply method further includes the steps of:
and regulating the hydrogen mixing proportion of the ejector according to the deviation degree of the hydrogen humidity in the fuel cell stack.
The invention has the beneficial effects that: through connecting a plurality of fuel cell stacks, hydrogen circulates among the plurality of fuel cell stacks, a humidifier is omitted, the utilization rate of the hydrogen is improved, and when the hydrogen at the inlet of one or a plurality of fuel cell stacks is in an abnormal state, the abnormal fuel cell stacks can be regulated by the fuel cell stacks which normally operate, so that the mutual active regulation among the stacks is realized.
Drawings
Fig. 1 is a schematic view of the structure of a hydrogen supply system of a fuel cell of the present invention.
Fig. 2 is a flow chart of a first embodiment of the hydrogen supplying method of the fuel cell of the present invention.
Fig. 3 is a flow chart of a second embodiment of the hydrogen supplying method of the fuel cell of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more clear, the present invention will be further described with reference to the embodiments and the accompanying drawings.
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is not quantitative, and the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In addition, three parallel schemes are presented and/or represented throughout, e.g., a and/or B represent a scheme that is met by a, a scheme that is met by B, or a scheme that is met by a and B simultaneously.
In the description of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that elements are listed and may include other elements not expressly listed.
Referring to fig. 1, fig. 1 shows a specific structure of a fuel cell hydrogen supply system of the present invention, which includes an ejector 100, a fuel cell stack 200, and a control module 300, wherein the number of the ejector 100 and the fuel cell stack 200 is at least two and is adapted in number to each other, specifically:
the ejector 100 is provided with a first ejection inlet and a second ejection inlet, the first ejection inlet is used for being connected with a dry hydrogen source, and the ejector 100 is used for outputting hydrogen connected from the first ejection inlet and the second ejection inlet;
the anode gas inlet of the fuel cell stack 200 is correspondingly connected with the output end of the ejector 100, the anode gas outlets of the fuel cell stacks 200 are mutually communicated, and when the fuel cell stack 200 reacts, the anode gas outlets of the fuel cell stacks 200 output excessive hydrogen to the second ejection inlets;
the control module 300 regulates the hydrogen mixing ratio of the anode gas inlet of the fuel cell stack 200 according to the internal hydrogen humidity of the fuel cell stack 200.
The ejector 100 is a device for ejecting one high-speed high-energy flow (liquid flow, gas flow or other substance flow) into the other low-speed low-energy flow, jet flows into a mixing chamber through a convergent nozzle, guided jet flows are arranged around the jet flows, the energy is transferred to the ejected flow by the jet flows through the boundary mixing action, a mixing area formed by mixing is gradually enlarged to fill the whole mixing chamber, and the flow is almost uniform through a section of mixing process to an outlet of the mixing chamber. The ejector 100 in this embodiment is connected to hydrogen from different sources through the first ejector inlet and the second ejector inlet respectively, and performs mixing output.
The fuel cell stack 200 is formed by stacking a plurality of fuel cells in series, and the fuel cell stack 200 is a site where an electrochemical reaction occurs and is a core part of a fuel cell system (or a fuel cell engine). During operation, hydrogen and oxygen are respectively distributed to the bipolar plates of the single cells through the main channels of the cell stack gas, are uniformly distributed to the electrodes through the diversion of the bipolar plates, and are in contact with the catalyst through the electrode support body to perform electrochemical reaction, water is generated by the electrochemical reaction of the hydrogen and the oxygen, proper humidity is required to be ensured in the fuel cell stack 200, a large amount of water vapor is generated when excessive hydrogen is input, the flooding phenomenon of the fuel cell stack 200 is caused, and the efficiency and the service life of the fuel cell stack 200 are reduced.
In actual use, the hydrogen source conveys dry hydrogen to the first injection inlet, each fuel cell stack 200 conveys wet hydrogen generated in the previous reaction to the second injection inlet, the dry hydrogen flowing in at high speed injects the wet hydrogen flowing in at low speed, the dry hydrogen and the wet hydrogen are fully mixed in the mixing area of the injector 100, and the mixed hydrogen is output to the anode air inlet of the corresponding fuel cell stack 200 for electrochemical reaction of the fuel cell stack 200. The anode gas outlets of the fuel cell stacks 200 are mutually communicated through pipelines, the fuel cell stacks 200 transmit the reacted humid hydrogen to the second injection inlets of the ejectors 100 in a summarized manner, the control module 300 obtains the humidity of the hydrogen in the fuel cell stacks 200, and the mixing proportion of the humid hydrogen flowing into the ejectors 100 is regulated and controlled by controlling the flow of the humid hydrogen flowing into the anode gas inlets of the fuel cell stacks 200, so that the effect of transmitting the humid hydrogen to the fuel cell stacks 200 is achieved. By controlling the input amount of hydrogen, the reaction rate of each fuel cell stack 200 can be regulated and controlled, and the hydrogen input amount is increased, so that the reaction rate of the fuel cell stacks 200 is increased, and the internal humidity of the fuel cell stacks 200 is increased, otherwise, the internal humidity of the fuel cell stacks 200 is decreased, so that the internal humidity of each fuel cell stack 200 is within the humidity setting range.
Further, a first gas flow valve 410 is disposed between the first injection inlet and the hydrogen source, and a second gas flow valve 420 is disposed between the second injection inlet and the anode outlet of the fuel cell stack 200.
Accordingly, the first air flow valve 410 and the second air flow valve 420 are electromagnetic valves, the first air flow valve 410 and the second air flow valve 420 are respectively used for regulating and controlling the air flow of the first injection inlet and the second injection inlet, the control module 300 is respectively connected with the first air flow valve 410 and the second air flow valve 420, and the hydrogen mixing proportion of the anode air inlet of the fuel cell stack 200 is regulated and controlled by controlling the opening degree of the first air flow valve 410 and/or the second air flow valve 420.
Further, the fuel cell hydrogen supply system further includes an impedance detection module 500 that detects the membrane electrode resistance of the fuel cell stack 200, and the control module 300 determines the internal hydrogen humidity of the fuel cell stack 200 according to the detected membrane electrode resistance.
It should be noted that, the control module 300 detects the membrane electrode resistance based on the ac impedance test principle, and determines the internal hydrogen humidity of the fuel cell stack 200 according to the detected membrane electrode resistance. The ac impedance is also called electrochemical impedance spectroscopy (Electrochemical Impedance Spectroscopy, abbreviated EIS), and when the electrode system is disturbed by an ac signal of sinusoidal waveform voltage (current), a corresponding current (voltage) response signal is generated, from which the impedance or admittance of the electrode can be obtained. The impedance detection module 500 according to the present embodiment detects the membrane electrode resistance of the fuel cell stack 200, so that the control module 300 determines the internal hydrogen humidity of the fuel cell stack 200 according to the detected membrane electrode resistance.
For example, the small-amplitude sine wave disturbance signals with different frequencies are applied to the fuel cell stack 200, the equivalent circuit of the membrane electrode is estimated according to the electrode impedance obtained by the relation between the response of the fuel cell stack 200 and the disturbance signals, and then the dynamics process and the mechanism contained in the fuel cell stack 200 can be analyzed, and the dynamics parameters of the fuel cell stack 200, such as the electrode double layer capacitance, the reaction resistance of the charge transfer process, the diffusion mass transfer process parameters, the internal hydrogen humidity of the fuel cell stack 200 and the like, can be estimated according to the parameter values of the related elements in the equivalent circuit.
Further, an anode outlet of the fuel cell stack 200 is provided with a vent branch 610, and the vent branch 610 is provided with a vent valve 620. The exhaust branch 610 and the exhaust valve 620 are used for removing impurities in a system loop, the exhaust valve 620 is controlled by the control module 300, the exhaust valve 620 is closed during normal operation of the system, and when impurities in a system pipeline are excessive, the control module 300 triggers the exhaust valve 620 to be conducted so as to purge the system pipeline, so that the impurities are blown away from the exhaust branch 610.
Further, the first injection inlet is connected with a pressure regulator 710, the anode gas inlet of the fuel cell stack 200 is provided with a pressure sensor 720, and the controller regulates the pressure regulator 710 according to the air pressure detection data of the pressure sensor 720. The dry hydrogen gas from the hydrogen source enters the eductor 100 through the pressure regulator 710. The pressure regulator 710 is used to regulate the pressure at the first eductor inlet so that the hydrogen gas input pressure is within the desired range of the system.
Further, a temperature sensor 800 and a humidity sensor 900 are provided between the first injection inlet and the pressure regulator 710.
Further, the anode gas inlet and the anode gas outlet of the fuel cell stack 200 are respectively provided with a humidity sensor 900, and the control module 300 regulates the hydrogen mixing ratio of the anode gas inlet of the fuel cell stack 200 according to the humidity detection data of the anode gas inlet and the anode gas outlet.
In practical use, the control module 300 regulates the hydrogen mixing ratio of the anode gas inlet of the fuel cell stack 200 according to the humidity difference between the anode gas inlet and the anode gas outlet. When the humidity difference between the anode air inlet and the anode air outlet of the current fuel cell stack 200 exceeds the preset humidity difference value, the humidity of the anode air outlet is greater than the humidity of the anode air inlet, and the opening degree of the second injection inlet of the injector 100 corresponding to the other fuel cell stacks 200 is increased to enable the other fuel cell stacks 200 to consume wet hydrogen, or the opening degree of the second injection inlet of the injector 100 of the current fuel cell stack 200 is further reduced to enable the current fuel cell stack 200 to reduce the reaction rate; when the humidity difference between the anode air inlet and the anode air outlet of the current fuel cell stack 200 exceeds the preset humidity difference value, the humidity of the anode air outlet is smaller than the humidity of the anode air inlet, and the opening degree of the second injection inlet of the injector 100 corresponding to the current fuel cell stack 200 is increased, so that the current fuel cell stack 200 consumes the wet hydrogen.
The operation of the hydrogen supply system of the fuel cell of the present invention will be described in detail with reference to specific steps.
Referring to fig. 1 and 2, fig. 2 shows specific steps of a hydrogen supplying method for a fuel cell according to the present invention, the hydrogen supplying method for a fuel cell comprising the steps of:
step S1, the internal hydrogen humidity of each fuel cell stack 200 is acquired.
The membrane electrode resistance can be detected by an alternating current impedance test principle.
Step S2, it is determined whether the internal hydrogen humidity of the fuel cell stack 200 is within the humidity setting range. If yes, executing step S3; if not, go to step S4.
Step S3, maintaining the reaction rate of each fuel cell stack 200.
Step S4, regulating the reaction rate of other fuel cell stacks 200 according to the deviation degree of the hydrogen humidity in the abnormal fuel cell stacks 200.
Further, the reaction rate of the other fuel cell stacks 200 is regulated according to the deviation degree of the hydrogen humidity in the abnormal fuel cell stack 200, and specifically includes the following steps:
when the internal hydrogen humidity of the abnormal fuel cell stack 200 is lower than the humidity setting range, controlling other fuel cell stacks 200 to increase the reaction rate; when the internal hydrogen humidity of the abnormal fuel cell stack 200 is higher than the humidity setting range, the other fuel cell stacks 200 are controlled to reduce the reaction rate.
Accordingly, when the fuel cell hydrogen supply system executes the above method, when the determination result indicates that the internal hydrogen humidity of each fuel cell stack 200 is within the humidity setting range, the air intake flow of the second injection inlet of the injector 100 corresponding to each fuel cell stack 200 is determined according to the operation power of each fuel cell stack 200, and is independent of each other and not affected, and may be controlled by adjusting the opening degree of each second air flow valve 420; when the judgment result shows that the humidity of the hydrogen at the anode gas inlet of the fuel cell stack 200 is low, the reaction rate of other fuel cell stacks 200 in the normal state is improved, the flow rate of the wet hydrogen discharged by the fuel cell stack 200 in the normal state is improved, and the flow rate of the wet hydrogen flowing into the ejector 100 is further improved; when the hydrogen humidity at the anode gas inlet of the fuel cell stack 200 is higher as a result of the judgment, the reaction rate of other fuel cell stacks 200 in the normal state is reduced, the flow rate of the wet hydrogen discharged by the fuel cell stack 200 in the normal state is reduced, and the flow rate of the wet hydrogen flowing into the ejector 100 is further reduced.
Further, as shown in fig. 3, the above-mentioned hydrogen supply method for a fuel cell further includes the steps of:
step S5, regulating the hydrogen mixing ratio of the ejector 100 according to the deviation degree of the hydrogen humidity in the fuel cell stack 200.
Accordingly, when the judgment result shows that the humidity of the hydrogen gas at the anode gas inlet of the fuel cell stack 200 is low, the opening degree of the second airflow valve 420 is adjusted to improve the gas inlet flow rate of the second injection inlet of the injector 100 corresponding to the fuel cell stack 200, and the flow rate of the wet hydrogen gas flowing into the injector 100 is increased; when the judgment result shows that the humidity of the hydrogen gas at the anode gas inlet of the fuel cell stack 200 is higher, the opening degree of the second airflow valve 420 is adjusted to reduce the inlet air flow rate of the second injection inlet of the injector 100 corresponding to the fuel cell stack 200, and reduce the flow rate of the wet hydrogen gas flowing into the injector 100. Through the above-described method, mutual active control between the fuel cell stacks 200 is achieved.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A hydrogen supply system for a fuel cell, comprising:
the device comprises at least two ejectors, wherein the ejectors are provided with a first ejecting inlet and a second ejecting inlet, the first ejecting inlet is used for being connected with a dry hydrogen source, and the ejectors are used for outputting hydrogen connected from the first ejecting inlet and the second ejecting inlet;
the fuel cell comprises at least two fuel cell stacks, wherein an anode gas inlet of one fuel cell stack is correspondingly connected with an output end of an ejector, anode gas outlets of the fuel cell stacks are mutually communicated, and when the fuel cell stacks react, the anode gas outlets of the fuel cell stacks output excessive hydrogen to the second ejection inlets;
the control module regulates and controls the hydrogen mixing proportion of an anode gas inlet of the fuel cell stack according to the internal hydrogen humidity of the fuel cell stack;
the method for regulating and controlling the hydrogen mixing proportion of the anode gas inlet of the fuel cell stack according to the internal hydrogen humidity of the fuel cell stack comprises the following steps: when the internal hydrogen humidity of the abnormal fuel cell stack is lower than a humidity setting range, controlling other fuel cell stacks to improve the reaction rate; when the internal hydrogen humidity of the abnormal fuel cell stack is higher than a humidity setting range, controlling other fuel cell stacks to reduce the reaction rate;
the controlling of other fuel cell stacks to increase the reaction rate includes: increasing the opening degree of a second injection inlet of the injector corresponding to other fuel cell stacks, or further reducing the opening degree of the second injection inlet of the injector of the current abnormal fuel cell stack;
the controlling of the other fuel cell stacks to reduce the reaction rate includes: and increasing the opening degree of a second injection inlet of the injector corresponding to the current abnormal fuel cell stack.
2. The fuel cell hydrogen supply system according to claim 1, wherein a first air flow valve is provided between the first injection inlet and the hydrogen source, and a second air flow valve is provided between the second injection inlet and an anode gas outlet of the fuel cell stack.
3. The fuel cell hydrogen supply system according to claim 1, further comprising an impedance detection module that detects a membrane electrode resistance of the fuel cell stack, wherein the control module determines an internal hydrogen humidity of the fuel cell stack based on the detected membrane electrode resistance.
4. The fuel cell hydrogen supply system according to claim 1, wherein an anode gas outlet of the fuel cell stack is provided with a gas discharge branch provided with a gas discharge valve.
5. The hydrogen supply system of claim 1, wherein the first injection inlet is connected with a pressure regulator, a pressure sensor is disposed at an anode gas inlet of the fuel cell stack, and the control module regulates the pressure regulator according to pressure detection data of the pressure sensor.
6. The fuel cell hydrogen supply system according to claim 5, wherein a temperature sensor and a humidity sensor are provided between the first injection inlet and the pressure regulator.
7. The hydrogen supply system of claim 1, wherein the anode gas inlet and the anode gas outlet of the fuel cell stack are respectively provided with a humidity sensor, and the control module regulates the hydrogen mixing ratio of the anode gas inlet of the fuel cell stack according to the humidity detection data of the anode gas inlet and the anode gas outlet;
the method for regulating and controlling the hydrogen mixing proportion of the anode gas inlet of the fuel cell stack according to the humidity detection data of the anode gas inlet and the anode gas outlet comprises the following steps:
under the condition that the humidity difference between an anode air inlet and an anode air outlet of the current fuel cell stack exceeds a preset humidity difference value, the humidity of the anode air outlet is larger than the humidity of the anode air inlet, and the opening degree of a second injection inlet of an injector corresponding to other fuel cell stacks is increased so as to enable the other fuel cell stacks to consume wet hydrogen, or the opening degree of the second injection inlet of the injector of the current fuel cell stack is further reduced so as to enable the current fuel cell stack to reduce the reaction rate;
and under the condition that the humidity difference between the anode air inlet and the anode air outlet of the current fuel cell stack exceeds a preset humidity difference value, the humidity of the anode air outlet is smaller than that of the anode air inlet, and the opening degree of a second injection inlet of an injector corresponding to the current fuel cell stack is increased so as to enable the current fuel cell stack to consume wet hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412910.5A CN114824385B (en) | 2022-04-19 | 2022-04-19 | Fuel cell hydrogen supply system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412910.5A CN114824385B (en) | 2022-04-19 | 2022-04-19 | Fuel cell hydrogen supply system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114824385A CN114824385A (en) | 2022-07-29 |
| CN114824385B true CN114824385B (en) | 2023-10-20 |
Family
ID=82505669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210412910.5A Active CN114824385B (en) | 2022-04-19 | 2022-04-19 | Fuel cell hydrogen supply system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114824385B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115172806B (en) * | 2022-07-29 | 2023-07-04 | 爱德曼(淄博)氢能科技有限公司 | Hydrogen fuel cell stack |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4167457A (en) * | 1978-05-05 | 1979-09-11 | Giner, Inc. | Passive electrolytic separator |
| CN104521050A (en) * | 2012-05-04 | 2015-04-15 | 水吉能公司 | System and method for controlling fuel cell module |
| CN112599817A (en) * | 2020-10-27 | 2021-04-02 | 智新科技股份有限公司 | Hydrogen tail gas recycling system of fuel cell |
| CN112820912A (en) * | 2021-03-16 | 2021-05-18 | 中山大洋电机股份有限公司 | Fuel cell system and control method thereof |
| CN113130941A (en) * | 2021-04-20 | 2021-07-16 | 北京亦嘉洁驱系统科技有限公司 | Hydrogen supply system of proton exchange membrane hydrogen fuel cell and control method |
| CN113903951A (en) * | 2021-10-14 | 2022-01-07 | 上海重塑能源科技有限公司 | Hydrogen supply integrated device for multi-stack fuel cell system |
| CN114142065A (en) * | 2021-11-30 | 2022-03-04 | 新源动力股份有限公司 | Proton exchange membrane fuel cell stack pretreatment activation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4886170B2 (en) * | 2003-03-18 | 2012-02-29 | 本田技研工業株式会社 | Fuel cell system |
| JP4647236B2 (en) * | 2003-11-28 | 2011-03-09 | 本田技研工業株式会社 | Fuel cell reactive gas supply device |
| US20100266923A1 (en) * | 2009-04-15 | 2010-10-21 | Bloom Energy Corporation | Fuel cell system with electrochemical hydrogen pump and method of operating same |
-
2022
- 2022-04-19 CN CN202210412910.5A patent/CN114824385B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4167457A (en) * | 1978-05-05 | 1979-09-11 | Giner, Inc. | Passive electrolytic separator |
| CN104521050A (en) * | 2012-05-04 | 2015-04-15 | 水吉能公司 | System and method for controlling fuel cell module |
| CN112599817A (en) * | 2020-10-27 | 2021-04-02 | 智新科技股份有限公司 | Hydrogen tail gas recycling system of fuel cell |
| CN112820912A (en) * | 2021-03-16 | 2021-05-18 | 中山大洋电机股份有限公司 | Fuel cell system and control method thereof |
| CN113130941A (en) * | 2021-04-20 | 2021-07-16 | 北京亦嘉洁驱系统科技有限公司 | Hydrogen supply system of proton exchange membrane hydrogen fuel cell and control method |
| CN113903951A (en) * | 2021-10-14 | 2022-01-07 | 上海重塑能源科技有限公司 | Hydrogen supply integrated device for multi-stack fuel cell system |
| CN114142065A (en) * | 2021-11-30 | 2022-03-04 | 新源动力股份有限公司 | Proton exchange membrane fuel cell stack pretreatment activation method |
Non-Patent Citations (1)
| Title |
|---|
| 质子交换膜燃料电池系统引射器的氢气循环特性;周苏等;《同济大学学报（自然科学版）》;第46卷(第8期);1115-1121、1130 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114824385A (en) | 2022-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7824815B2 (en) | Fuel cell system | |
| US9105889B2 (en) | Method and apparatus for determining humidity states of individual cells in a fuel cell, method and apparatus for controlling humidity states of individual cells in a fuel cell, and a fuel cell system | |
| EP2075866B1 (en) | Fuel cell system | |
| CN101233643B (en) | Fuel cell system | |
| US20190198897A1 (en) | Fuel cell system and control method thereof | |
| KR101704223B1 (en) | Method for controlling operation pressure of fuel cell system | |
| US7348083B2 (en) | Fuel cell system | |
| US7781119B2 (en) | Flow shifting in each individual cell of a fuel cell stack | |
| WO2009005158A1 (en) | Fuel cell system and control unit for fuel cell system | |
| CN106299420A (en) | Fuel cell system | |
| CN106463742A (en) | Fuel-cell system and method for controlling fuel-cell system | |
| JP4147927B2 (en) | Fuel cell system | |
| CN114824385B (en) | Fuel cell hydrogen supply system and control method | |
| US10050292B2 (en) | Method for controlling fuel cell system | |
| CN113594508A (en) | Control method and control device for fuel cell system, and fuel cell system | |
| US8936885B2 (en) | Fuel cell system | |
| JP5319160B2 (en) | Fuel cell system | |
| CN114361539B (en) | Exhaust control method of tail exhaust circulation system and liquid discharge control method thereof | |
| US20240088415A1 (en) | Fuel cell system and control method for fuel cell system | |
| CN220731573U (en) | Humidity control system, fuel cell and fuel cell automobile | |
| JP7250839B2 (en) | fuel cell system | |
| CN214580474U (en) | Pulse hydrogen supply system of proton exchange membrane fuel cell | |
| US11682780B2 (en) | Fuel cell system | |
| RU2325009C1 (en) | Fuel element system method of its control | |
| JP2021125419A (en) | Fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |