CN113067013B - Hydrogen supply device of fuel cell system - Google Patents
Hydrogen supply device of fuel cell system Download PDFInfo
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- CN113067013B CN113067013B CN202110310305.2A CN202110310305A CN113067013B CN 113067013 B CN113067013 B CN 113067013B CN 202110310305 A CN202110310305 A CN 202110310305A CN 113067013 B CN113067013 B CN 113067013B
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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
- H01M8/04104—Regulation of differential pressures
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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
- H01M8/04753—Pressure; Flow of fuel cell reactants
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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
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Abstract
The invention discloses a hydrogen supply device of a fuel cell system, and belongs to the technical field of fuel cells. The hydrogen supply device of the fuel cell system comprises a device body and a hydrogen supply channel arranged on the device body, wherein the input end of the hydrogen supply channel is connected with an external hydrogen storage container, and the output end of the hydrogen supply channel is connected with a fuel cell stack; the hydrogen supply device further comprises a hydrogen supply channel which is arranged in parallel: a direct injection proportional valve; the inlet end of the first ejector is provided with a first switch valve, and the first switch valve is used for controlling the opening and closing of the first ejector; and the front end of the second ejector is provided with a second switch valve which is used for controlling the opening and closing of the second ejector. The hydrogen supply device of the fuel cell system can ensure stable hydrogen supply in the full power range of the fuel cell.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a hydrogen supply device of a fuel cell system.
Background
Most of the hydrogen supply of the fuel cell adopts a hydrogen circulating pump or an ejector form, the circulating ratio of the hydrogen circulating pump is variable, and the hydrogen circulating pump has a good circulating effect, but the hydrogen circulating pump needs to consume extra power, so that the system efficiency of the fuel cell system is influenced. The ejector does not need to consume extra power, but is limited by the structure of the ejector, the ejector has a large ejection ratio only under the working condition of a certain power range, and under the working conditions of other power ranges, the ejection ratio of the ejector cannot meet the requirements, so that hydrogen pressure is unstable, and the hydrogen cannot be stably supplied to the fuel cell.
Therefore, it is desirable to provide a hydrogen supply apparatus of a fuel cell system to solve the above problems.
Disclosure of Invention
The invention aims to provide a hydrogen supply device of a fuel cell system, which can ensure that the flow rate and the pressure of hydrogen supply are stable as far as possible within the full power range of the fuel cell system.
In order to realize the purpose, the following technical scheme is provided:
a hydrogen supply device of a fuel cell system comprises a device body and a hydrogen supply channel arranged on the device body, wherein the input end of the hydrogen supply channel is connected with an external hydrogen storage container, and the output end of the hydrogen supply channel is connected with a fuel cell stack; the hydrogen supply device further comprises a hydrogen supply channel which is arranged in parallel:
a direct injection proportional valve;
the inlet end of the first ejector is provided with a first switch valve which is used for controlling the opening and closing of the first ejector;
and the front end of the second ejector is provided with a second switch valve which is used for controlling the opening and closing of the second ejector.
Optionally, the first ejector is configured to be suitable for use in fuel cell system operating conditions in the power range 0-50 KW; the second ejector is configured for use in fuel cell system operating conditions in the range of 70-100 KW.
Optionally, a hollow mixing piece is arranged at the output end of the hydrogen supply passage, and the mixing piece is communicated with the gas outlet of the direct injection proportional valve, the outlet end of the first ejector and the outlet end of the second ejector at the same time; the fuel cell stack is connected with the first hydrogen discharging interface.
Optionally, a pressure relief valve is further arranged on the hydrogen supply channel; the pressure relief valve is arranged behind the direct injection proportional valve.
Optionally, a hydrogen return channel is further arranged on the device body, an input end of the hydrogen return channel is connected with the fuel cell stack, and an output end of the hydrogen return channel is connected with the first ejector and the second ejector.
Optionally, a first check valve and a second check valve are arranged on the hydrogen return passage, and are respectively used for controlling unidirectional flow of hydrogen from the fuel cell stack to the first ejector and the second ejector.
Optionally, a water-vapor separation assembly is further arranged on the hydrogen return channel, and hydrogen output by the fuel cell stack enters the first ejector and/or the second ejector after passing through the water-vapor separation assembly.
Optionally, a hydrogen discharge valve is arranged on the hydrogen return channel.
Optionally, a first pressure sensor is provided at an input end of the hydrogen supply channel.
Optionally, a second pressure sensor is provided at the output end of the hydrogen supply passage, the second pressure sensor being located after the pressure relief valve.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the hydrogen supply channel is provided with the direct injection proportional valve, the first ejector and the second ejector in parallel, and stable hydrogen supply is realized through the combined control of the direct injection proportional valve, the first ejector and the second ejector; firstly, the first ejector and the second ejector are respectively controlled by different switch valves, one of the first ejector and the second ejector can be selected for use, and the first ejector and the second ejector can also be used simultaneously, so that the flow and the pressure of hydrogen supply can be ensured to be stable as far as possible within the full power range of a fuel cell system; secondly, the direct injection proportional valve can be adaptively opened according to the change of air pressure and flow in the ejector so as to compensate the pressure or flow fluctuation of the ejector and finally realize the stable supply of hydrogen.
Drawings
Fig. 1 is a schematic structural diagram of a hydrogen supply apparatus of a fuel cell system in an embodiment of the invention;
fig. 2 is a front view of a hydrogen supply device of the fuel cell system in the embodiment of the invention;
fig. 3 is a plan view of a hydrogen supply device of the fuel cell system in the embodiment of the invention;
FIG. 4 is a cross-sectional view A-A of FIG. 2;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 6 is a cross-sectional view of C-C of FIG. 3;
FIG. 7 is a cross-sectional view D-D of FIG. 3;
FIG. 8 is a cross-sectional view of E-E in FIG. 2;
fig. 9 is a cross-sectional view F-F in fig. 2.
Reference numerals:
100. a device body; 101. a hydrogen supply channel; 102. a hydrogen return channel; 103. a first hydrogen inlet interface; 104. a first hydrogen discharge interface; 105. a second hydrogen inlet interface; 106. a second hydrogen discharge interface; 200. a hydrogen storage vessel; 300. a fuel cell stack;
11. a direct injection proportional valve; 12. a first ejector; 13. a second ejector; 14. a first on-off valve; 15. a second on-off valve; 16. a mixing member; 17. a pressure relief valve; 18. a first check valve; 19. a second one-way valve; 20. a water-vapor separation assembly; 21. a drain valve; 22. a hydrogen discharge valve; 23. a first pressure sensor; 24. a second pressure sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 9, the present embodiment discloses a hydrogen supply device of a fuel cell system, which is mainly used for supplying hydrogen gas to the fuel cell system. Specifically, the hydrogen supply device comprises a device body 100 and a hydrogen supply channel 101 arranged on the device body 100, wherein the input end of the hydrogen supply channel 101 is connected with an external hydrogen storage container 200, and the output end of the hydrogen supply channel 101 is connected with a fuel cell stack 300, so that hydrogen in the hydrogen storage container 200 is conveyed to the fuel cell stack 300 through the hydrogen supply channel 101 to complete reaction. Further, the hydrogen supply device further comprises a direct injection proportional valve 11, a first ejector 12 and a second ejector 13 which are arranged on the hydrogen supply passage 101 in parallel; referring to fig. 6 and 7, an inlet port of direct injection proportional valve 11 is connected to an input end of hydrogen supply passage 101, and an outlet port of direct injection proportional valve 11 is connected to an output end of hydrogen supply passage 101; referring to fig. 1, 3 and 8, the inlet end of the first ejector 12 is provided with a first on-off valve 14, and the first on-off valve 14 is used for controlling the opening and closing of the first ejector 12; the front end of the second ejector 13 is provided with a second switch valve 15, and the second switch valve 15 is used for controlling the opening and closing of the second ejector 13.
When the fuel cell system is implemented specifically, firstly, the first ejector 12 and the second ejector 13 control the working state through respective switch valves, and can be used either selectively or simultaneously, so that the flow and pressure of hydrogen supply can be ensured to be stable within the full power range of the fuel cell system; secondly, the direct injection proportional valve 11 is adaptively opened according to the change of the air pressure and the flow in the ejector, and the opening degree is adjusted to compensate the pressure or flow fluctuation of the ejector, so that the pile feeding flow of the hydrogen can be ensured, and the pressure stability of the hydrogen can also be ensured. Namely, the hydrogen supply channel 101 is provided with the direct injection proportional valve 11, the first ejector 12 and the second ejector 13 which are connected in parallel, stable hydrogen supply is realized through the combined control of the three, and the service performance of the hydrogen supply device is improved.
In this embodiment, optionally, the first ejector 12 is suitable for the fuel cell system working condition with the power range of 0-50KW, and the second ejector 13 is suitable for the fuel cell system working condition with the power range of 70-100 KW; different ejectors have different structures, so that the power ranges of the applicable fuel cell systems are different, and the selection of the appropriate ejector according to the power range of the fuel cell system is favorable for realizing the large ejection ratio of the ejector and ensuring that the ejector has the best performance. During specific implementation, under the working condition that the fuel cell system is 0-50KW in low power, the first switch valve 14 is opened, the second switch valve 15 is closed, and hydrogen is supplied by the first ejector 12. Under the high-power working condition that the fuel cell system is 70-100KW, the first switch valve 14 is closed, the second switch valve 15 is opened, and hydrogen is supplied by the second ejector 13. Under the working condition that the power of a fuel cell system is 50-70KW, the combined regulation of two ejectors is carried out: specifically, first on-off valve 14 is opened first, it is guaranteed that the injection ratio of first ejector 12 reaches the maximum, but at the moment, only first ejector 12 cannot meet the hydrogen flow pressure, second on-off valve 15 is opened and the opening degree of second on-off valve 15 is gradually increased, hydrogen is supplied by first ejector 12 and second ejector 13 simultaneously, it is guaranteed that the flow sum of the two ejectors meets the flow demand of fuel cell stack 300, along with the increase of the power of the fuel cell system, when the flow sum is increased to 70KW or more, first on-off valve 14 is closed, hydrogen is supplied by second ejector 13 only, and it is guaranteed that the stability of hydrogen flow and pressure can be guaranteed to the whole hydrogen supply device within the full-power working condition range.
In this embodiment, refer to fig. 1, set up three subchannel side by side between the input and the output of hydrogen supply passageway 101, be first subchannel respectively, second subchannel and third subchannel, direct injection proportional valve 11, first ejector 12 and second ejector 13 are located first subchannel respectively, second subchannel and third subchannel are last, and then realized the parallel arrangement of three, three subchannel is connected in the same input and the same output of hydrogen supply passageway 101, direct injection proportional valve 11 promptly, hydrogen in first ejector 12 and the second ejector 13 is inputed by the same input of hydrogen supply passageway 101, and unified output is to the same output of hydrogen supply passageway 101. Specifically, referring to fig. 2, 6 and 7, the device body 100 is provided with a first hydrogen inlet 103 and a first hydrogen discharge 104 at the input end and the output end of the hydrogen supply passage 101, respectively, an external hydrogen storage container 200 is connected to the first hydrogen inlet 103, and a fuel cell stack 300 is connected to the first hydrogen discharge 104.
Referring to fig. 2-4 and fig. 7, the output end of the hydrogen supply channel 101 is provided with a hollow mixing part 16, and the mixing part 16 is simultaneously communicated with the air outlet of the direct injection proportional valve 11, the outlet end of the first ejector 12 and the outlet end of the second ejector 13, so that the hydrogen in the three sub-channels is fully mixed and homogenized in the mixing part 16 and then output, and stable supply of the hydrogen is ensured. Furthermore, the mixing element 16 is provided with the first hydrogen discharge port 104, and the mixed hydrogen gas smoothly enters the fuel cell stack 300 through the first hydrogen discharge port 104.
Referring to fig. 1, a pressure release valve 17 is further disposed on the hydrogen supply channel 101, and the pressure release valve 17 is disposed at an output end of the hydrogen supply channel 101, so as to avoid danger caused by excessive pressure of the stack entering hydrogen, and ensure safety of the fuel cell stack 300 and the fuel cell system. In the present embodiment, referring to fig. 1 and 7, the relief valve 17 is provided on the first branch passage after the direct injection proportional valve 11; of course, in some other embodiments, the setting position of the pressure relief valve 17 may be set at other positions near the output end of the hydrogen supply passage 101 as long as hydrogen gas enters the fuel cell stack 300. To facilitate the hydrogen pressure control of the fuel cell system, referring to fig. 1, 2, and 6, a first pressure sensor 23 is further provided at the input end of the hydrogen supply channel 101 for detecting the pressure of hydrogen initially entering the hydrogen supply channel 101. Further, referring to fig. 1, 2 and 7, a second pressure sensor 24 is disposed at the output end of the hydrogen supply channel 101, and is used for detecting the pressure of the hydrogen entering the fuel cell stack 300, so as to ensure that the gas pressure meets the use requirement of the fuel cell stack 300, in particular, when the fuel cell system is implemented, the first pressure sensor 23 and the second pressure sensor 24 can transmit pressure signals to a control unit of the fuel cell system, and the control unit transmits control signals to the direct injection proportional valve 11 to control the open-close state thereof, so as to compensate the hydrogen pressure fluctuation and the flow fluctuation of the injector. In this embodiment, the second pressure sensor 24 is disposed on the first branch passage and behind the relief valve 17.
Referring to fig. 1, a hydrogen return passage 102 is further disposed on the hydrogen supply device, an input end of the hydrogen return passage 102 is connected to the fuel cell stack 300, and an output end of the hydrogen return passage 102 is connected to the first ejector 12 and the second ejector 13, so that hydrogen in the fuel cell stack 300 is re-delivered to the ejectors, and the hydrogen is recycled. In specific implementation, in order to realize that the circulating hydrogen enters the two ejectors, two branches are led out from the hydrogen return passage 102, namely a first hydrogen return branch and a second hydrogen return branch, the first hydrogen return branch is communicated with the first ejector 12, and the second hydrogen return branch is communicated with the second ejector 13. Further, referring to fig. 1 and 9, a first check valve 18 is disposed on the first hydrogen return branch, and a second check valve 19 is disposed on the second hydrogen return branch, and is respectively used for controlling one-way flow of hydrogen from the fuel cell stack 300 to the first ejector 12 and the second ejector 13, so as to prevent gas from flowing back through the other ejector when one ejector works alone, which may result in abnormal operation of the hydrogen supply device.
Further, referring to fig. 2 and fig. 3, a second hydrogen inlet 105 and a second hydrogen outlet 106 are also arranged on the device body 100, and the hydrogen gas on the hydrogen return channel 102 flows into the device body 100 again through the second hydrogen inlet 105 and further enters the ejector; the hydrogen gas on the hydrogen return channel 102 can also be output to the outside through the second hydrogen discharge interface 106. A hydrogen discharge valve 22 is further disposed on the device body 100, and the hydrogen discharge valve 22 is disposed at the second hydrogen discharge interface 106 for controlling the discharge of the hydrogen gas on the hydrogen return channel 102. Since the hydrogen output from the fuel cell stack 300 may carry impurities, the hydrogen discharge valve 22 is required to discharge the part of the hydrogen with impurities, so as to ensure the purity of the circulated hydrogen and ensure the normal use of the fuel cell stack 300. When the hydrogen exhaust valve 22 is opened to perform the hydrogen exhaust operation, in order to avoid pressure fluctuation on the anode side of the fuel cell stack 300, the hydrogen supply apparatus provided in this embodiment may perform pressure compensation by opening the direct injection proportional valve 11, so as to sufficiently ensure the pressure stability on the anode side of the fuel cell stack 300 and improve the performance of the fuel cell stack 300.
Referring to fig. 1, 2 and 7, the hydrogen return passage 102 is further provided with a water-vapor separation assembly 20, and hydrogen output by the fuel cell stack 300 passes through the water-vapor separation assembly 20 and then enters the first ejector 12 and the second ejector 13, so that water blockage of the ejectors and the fuel cell stack 300 is avoided. The water-vapor separation assembly 20 includes a water-vapor separation body for separating liquid water and gas, a water outlet provided on the device body 100, and a water discharge valve 21 provided at the water outlet for discharging the separated liquid water.
Above-mentioned all kinds of valve bodies, steam separation subassembly 20 and the pressure sensor of hydrogen supply device all are integrated on device body 100, make whole hydrogen supply device become the module that the spare part height was concentrated, the hydrogen leakage point that has significantly reduced has also shortened hydrogen supply path, has reduced the resistance loss in the hydrogen circulation as far as possible, has promoted the performance of whole hydrogen supply device, has guaranteed the stable supply of hydrogen.
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 (8)
1. The hydrogen supply device of the fuel cell system is characterized by comprising a device body (100) and a hydrogen supply channel (101) arranged on the device body (100), wherein the input end of the hydrogen supply channel (101) is connected with an external hydrogen storage container (200), and the output end of the hydrogen supply channel (101) is connected with a fuel cell stack (300); the hydrogen supply device further includes, provided in parallel on the hydrogen supply passage (101):
a direct injection proportional valve (11);
the inlet end of the first ejector (12) is provided with a first switch valve (14), and the first switch valve (14) is used for controlling the opening and closing of the first ejector (12);
the front end of the second ejector (13) is provided with a second switch valve (15), and the second switch valve (15) is used for controlling the second ejector (13) to be opened and closed;
the first ejector (12) is configured to be suitable for use in fuel cell system operating conditions in the power range 0-50 KW; the second ejector (13) is configured to be suitable for fuel cell system working conditions with power ranging from 70KW to 100 KW; the first ejector (12) and the second ejector (13) are jointly adjusted, so that a hydrogen supply device of the fuel cell system is suitable for the working condition of the fuel cell system with the power range of 50-70 KW;
the output end of the hydrogen supply channel (101) is provided with a hollow mixing piece (16), and the mixing piece (16) is communicated with the air outlet of the direct injection proportional valve (11), the outlet end of the first ejector (12) and the outlet end of the second ejector (13) at the same time; the mixing piece (16) is provided with a first hydrogen discharging interface (104), and the fuel cell stack (300) is connected with the first hydrogen discharging interface (104).
2. The hydrogen supply device according to claim 1, wherein a pressure relief valve (17) is further provided on the hydrogen supply passage (101); the relief valve (17) is provided after the direct injection proportional valve (11).
3. The hydrogen supply device according to claim 1, wherein the device body (100) is further provided with a hydrogen return channel (102), an input end of the hydrogen return channel (102) is connected with the fuel cell stack (300), and an output end of the hydrogen return channel (102) is connected with the first ejector (12) and the second ejector (13).
4. The hydrogen supply device according to claim 3, wherein the hydrogen return passage (102) is provided with a first check valve (18) and a second check valve (19) for controlling one-way flow of hydrogen from the fuel cell stack (300) to the first ejector (12) and the second ejector (13), respectively.
5. The hydrogen supply device according to claim 3, wherein the hydrogen return passage (102) is further provided with a water-vapor separation assembly (20), and hydrogen output by the fuel cell stack (300) enters the first ejector (12) and/or the second ejector (13) after passing through the water-vapor separation assembly (20).
6. A hydrogen supply device according to claim 3, characterized in that the hydrogen return passage (102) is provided with a hydrogen discharge valve (22).
7. A hydrogen supply arrangement according to claim 1, characterized in that a first pressure sensor (23) is arranged at the input end of the hydrogen supply channel (101).
8. A hydrogen supply device according to claim 2, characterized in that a second pressure sensor (24) is provided at the output end of the hydrogen supply passage (101), the second pressure sensor (24) being located after the pressure relief valve (17).
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| CN202110310305.2A CN113067013B (en) | 2021-03-23 | 2021-03-23 | Hydrogen supply device of fuel cell system |
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| CN202110310305.2A CN113067013B (en) | 2021-03-23 | 2021-03-23 | Hydrogen supply device of fuel cell system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113871660B (en) * | 2021-09-03 | 2023-06-13 | 清华大学 | Fuel cell gas circulation system and control method |
| CN114420974A (en) * | 2021-12-14 | 2022-04-29 | 东风汽车集团股份有限公司 | External hydrogen supply system for fuel cell vehicle |
| CN114243057A (en) * | 2022-02-24 | 2022-03-25 | 德燃(浙江)动力科技有限公司 | Hydrogen supply device, fuel cell power generation device, fuel cell hydrogen circulation device, and control method thereof |
| CN114497653B (en) * | 2022-04-02 | 2022-07-19 | 山东国创燃料电池技术创新中心有限公司 | Fuel cell hydrogen supply control method and device |
| CN115036533A (en) * | 2022-06-10 | 2022-09-09 | 中国北方发动机研究所(天津) | Hydrogen supply device for fuel cell engine |
| CN115036535B (en) * | 2022-07-11 | 2024-07-09 | 奇瑞商用车（安徽）有限公司 | Ejector of hydrogen circulation system of automobile fuel cell |
| CN115172805A (en) * | 2022-07-21 | 2022-10-11 | 中汽创智科技有限公司 | Fuel cell hydrogen supply system and control method |
| CN117133951A (en) * | 2023-10-13 | 2023-11-28 | 上海恩威氢成科技有限公司 | Hydrogen supply method and system for anode of hydrogen fuel cell and control method of hydrogen supply system |
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| CN110600769A (en) * | 2019-10-12 | 2019-12-20 | 鸾鸟电气(上海)有限公司 | Hydrogen circulation device |
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| KR20120049969A (en) * | 2010-11-10 | 2012-05-18 | 현대자동차주식회사 | Recirculation structure of hydrogen for fuel cell using multistage ejector |
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