CN114520352B - Gas pressure control device and electric pile test platform - Google Patents
Gas pressure control device and electric pile test platform Download PDFInfo
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- CN114520352B CN114520352B CN202210025127.3A CN202210025127A CN114520352B CN 114520352 B CN114520352 B CN 114520352B CN 202210025127 A CN202210025127 A CN 202210025127A CN 114520352 B CN114520352 B CN 114520352B
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- 238000012360 testing method Methods 0.000 title claims abstract description 29
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 97
- 239000000446 fuel Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000011712 cell development Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
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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
-
- 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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- 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)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Fuel Cell (AREA)
Abstract
The invention relates to a gas pressure control device and a pile test platform. Δp1=p-P1, Δp2=p2-P1; p is a target pressure value, P1 is a pressure value of an inlet of the electric pile to be tested, and P2 is a pressure value of the inside of the humidifying tank. When the gas pressure of the electric pile to be tested needs to be increased, the gas pressure of the gas flow control point is increased to a target pressure value. When Δp1 is greater than a and Δp2 is less than b, the target flow rate of the air intake assembly increases, so that the humidification tank can be rapidly boosted to bring the inlet of the stack to the target pressure value as soon as possible. When the gas pressure of the electric pile to be tested needs to be reduced, the gas pressure of the gas flow control point is firstly reduced to a target pressure value. When deltaP 1 is smaller than c and deltaP 2 is larger than d, the exhaust valve is opened, and gas can be discharged from the output valve and the exhaust pipeline at the same time, so that the air pressure in the humidification tank and the electric pile can be quickly reduced, and the inlet of the electric pile can reach a target pressure value as soon as possible. Thus, the dynamic response rate is significantly improved.
Description
Technical Field
The invention relates to the technical field of fuel cell testing, in particular to a gas pressure control device and a pile testing platform.
Background
The galvanic pile test platform is an indispensable device for fuel cell development, performance evaluation, durability test and the like. Proper reactant gas flow rates are required for proper operation of the fuel cell. In the testing process, the gas pressure entering the electric pile needs to be switched to test the working state of the electric pile under different gas pressure working conditions.
The pressure of the gas may be controlled by a gas flow control point. However, since the humidification tank, the heater, the pipe and the like are generally included between the gas flow control point and the stack inlet, a large chamber is inevitably present. Thus, when the pressure at the gas flow control point changes rapidly, there is a lag in the actual gas pressure at the stack inlet and it does not immediately coincide with the pressure required at the gas flow control point. That is, the dynamic response rate of the existing stack test platform is low.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a gas pressure control device and a stack test platform that increase the dynamic response rate.
The gas pressure control device comprises a humidifying tank, an output valve and an air inlet component for connecting a gas flow control point with the humidifying tank, wherein an inlet and an outlet of a to-be-tested electric pile can be respectively communicated with the outlet of the humidifying tank and the inlet of the output valve, the air inlet component allows gas to flow through at a target flow rate, and the air inlet component can increase the target flow rate when delta P1 is larger than a and delta P2 is smaller than b; the gas pressure control device further comprises an exhaust pipeline connected with the to-be-tested pile and the output valve in parallel, wherein the exhaust pipeline comprises an exhaust valve, and the exhaust valve is opened when delta P1 is smaller than c and delta P2 is larger than d;
wherein a, b and d are all more than 0, and c is less than 0; Δp1=p-pΔp2=p2-p1; p is the target pressure value of the gas flow control point, P1 is the pressure value of the inlet of the electric pile to be tested, and P2 is the pressure value inside the humidifying tank.
In one embodiment, the device further comprises a gas source arranged at the gas flow control point, and the inlet of the gas inlet assembly is communicated with the gas source.
In one embodiment, the air inlet assembly comprises a flow controller, two ends of the flow controller are respectively communicated with the flow control point and the humidification tank, the control flow of the flow controller is adjustable, and when Δp1 is greater than a and Δp2 is less than b, the flow controller can increase the control flow.
In one embodiment, the air inlet assembly comprises a flow controller and an air charging pipeline connected with the flow controller in parallel, two ends of the flow controller are respectively communicated with the flow control point and the humidification tank, the air charging pipeline comprises an air charging valve, and the air charging valve is opened when delta P1 is larger than a and delta P2 is smaller than b.
In one embodiment, the outlet of the aeration line is connected to the inlet of the humidification tank.
In one embodiment, the inflation valve and the exhaust valve are both solenoid valves.
In one embodiment, the air inlet end of the air exhaust pipeline is connected to the tank body of the humidifying tank.
In one of the embodiments, a is greater than or equal to 2 and c is less than or equal to-2.
A galvanic pile test platform comprising two gas pressure control devices according to any of the above preferred embodiments, the humidification tanks of the two gas pressure control devices being adapted to communicate with the anode and cathode of the galvanic pile to be tested, respectively.
In one embodiment, when the difference between the anode pressure value and the cathode pressure value of the stack to be tested exceeds a preset value, the air inlet assemblies of the two gas pressure control devices both maintain the target flow constant.
According to the gas pressure control device and the electric pile testing platform, when the gas pressure of the electric pile to be tested needs to be increased, the gas pressure of the gas flow control point is increased to the target pressure value. Moreover, when Δp1 is greater than a and Δp2 is less than b, the target flow rate of the air intake assembly increases, so that the humidification tank can be rapidly boosted to bring the inlet of the stack to the target pressure value as soon as possible. When the gas pressure of the electric pile to be tested needs to be reduced, the gas pressure of the gas flow control point is firstly reduced to a target pressure value. Also, the exhaust valve is open when Δp1 is less than c and Δp2 is greater than d. At this time, the gas can be discharged from the output valve and the exhaust pipe at the same time, so that the gas pressure in the humidification tank and the electric pile can be quickly reduced, so that the inlet of the electric pile can reach the target pressure value as soon as possible. Thus, the dynamic response rate is significantly improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a gas pressure control device according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a body pressure control device according to another embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
Referring to fig. 1 and 2, a gas pressure control apparatus 10 is provided. In addition, the invention also provides a pile test platform (not shown), which comprises two gas pressure control devices 10.
The stack testing platform is used to test the stacks 20 of fuel cells. Specifically, the two gas pressure control devices 10 are used to respectively supply hydrogen and oxygen to the anode and the cathode of the stack 20, and can control the pressure and the flow rate of the ventilation.
Referring again to fig. 1, a gas pressure control apparatus 10 according to an embodiment of the present invention includes a humidification tank 100, an output valve 200, an intake assembly 300, and an exhaust conduit 400.
The gas inlet assembly 300 is used for connecting a gas flow control point with the humidification tank 100, and the inlet and outlet of the stack 20 to be tested can be respectively communicated with the outlet of the humidification tank 100 and the inlet of the output valve 200. The gas flow control point is used to provide a body gas (which may be hydrogen or oxygen) and to be able to adjust the output gas to a desired target pressure value. The target pressure value is dynamically changed according to different test working conditions. In this embodiment, the gas pressure control device 10 further includes a gas source 500 disposed at the gas flow control point, and the inlet of the gas inlet assembly 300 is in communication with the gas source 500. The gas source 500 may store gas and may regulate the pressure of the gas output. Obviously, in other embodiments, the gas flow control point may also be an interface capable of communicating with an external gas source.
The gas output from the gas flow control point enters the humidification tank 100 through the gas inlet assembly 300, and enters the interior of the stack 20 from the inlet of the stack 20 to be tested after the humidification tank 100 reaches the required humidity. The gas after the reaction in the cell stack 20 enters the output valve 200 from the outlet of the cell stack 20 to be tested, and is discharged through the output valve 200. Wherein the gas inlet assembly 300 allows gas to flow therethrough at a target flow rate. That is, the flow rate of the gas that is output from the flow control point into the humidification tank 100 may be quantitatively controlled by the gas intake assembly 300. Moreover, the output valve 200 is also capable of maintaining a preset output pressure. Therefore, the air intake assembly 300 is matched with the output valve 200, and the accuracy and stability of the air pressure in the electric pile 20 can be ensured. The output valve 200 is typically a back pressure valve. In particular, in this embodiment, the outlet of the output valve 200 is also connected to the tail boom 600 to achieve harmless emission of gas.
The gas pressure control device 10 needs to collect three pressure values during operation, namely, a target pressure value (denoted as P) output by a gas flow control point, a pressure value (denoted as P1) of an inlet of the stack 20 to be tested, and a pressure value (denoted as P2) of the interior of the humidification tank 100. The target pressure value refers to the pressure value that needs to be reached in the stack 20 under the corresponding test conditions. Where Δp1=p—p1, represents the difference between the actual pressure at the inlet of the stack 20 and the target pressure value; Δp2=p2-P1, which represents the difference in actual pressure at the inlet of the stack 20 compared to the pressure in the humidification tank 100.
In normal testing, the target flow of the air intake assembly 300 is kept constant, so that the air intake amount and the air pressure in the stack 20 can be kept stable. When Δp1 is greater than a and Δp2 is less than b, intake assembly 300 can increase the target flow rate. a. b are all values greater than 0, Δp1 > a, indicating that the actual pressure at the inlet of the stack 20 does not reach the target pressure value. At this time, the air intake assembly 300 increases the target flow rate to increase the instantaneous flow rate of the air entering the humidification tank 100, thereby rapidly increasing the pressure of the humidification tank 100 and thereby enabling the inlet of the stack to reach the target pressure value as soon as possible.
Further, Δp2 < b indicates that the difference between the pressure in the humidification tank 100 and the pressure at the inlet of the cell stack 20 is within a certain range. In this way, when the air intake assembly 300 increases the target flow rate, it is possible to ensure that the actual flow rate into the stack 20 is within a controllable range, thereby avoiding causing excessive instantaneous flow rate into the stack 20.
To avoid frequent adjustments of the target flow rate by the intake assembly 300 due to fluctuations in pressure, the specific value of a needs to be determined based on the fluctuation range of pressure. In particular, in this embodiment, a is greater than or equal to 2. The specific value of b shows the flow resistance from the humidification tank 100 to the inlet of the electric pile 200 under the target flow, and the simulation or test calibration can be performed in advance.
The exhaust pipeline 400 is connected in parallel with the stack 20 to be tested and the output valve 200, and the exhaust pipeline 400 comprises an exhaust valve 410. Specifically, two pipes are respectively connected to two ends of the exhaust valve 410, and the two pipes are respectively communicated with the upstream of the galvanic pile 20 and the downstream of the output valve 200. During normal testing, the exhaust valve 410 is closed, and gas can only be exhausted through the output valve 200, so that the air pressure in the stack 20 is maintained stable.
Further, when Δp1 is smaller than c and Δp2 is larger than d, the exhaust valve 410 is opened. d is a number greater than 0 and c is a number less than 0.Δp1 < c indicates that the actual pressure at the inlet of the stack 20 has been higher than the target pressure value. At this time, the gas discharge valve 410 is opened, and gas can be discharged from the output valve 200 and the gas discharge pipe 400 at the same time, so that the gas pressure in the humidification tank 100 and the stack can be rapidly reduced, so that the pressure at the inlet of the stack 20 can be rapidly reduced to a target pressure value.
Specifically, in the present embodiment, the air inlet end of the air discharge pipe 400 is connected to the tank body of the humidification tank 100. In this way, the gas discharged through the gas discharge pipe 400 does not share part of the pipe with the gas flowing through the stack 20, so that the depressurization rate of the humidification tank 100 can be further increased.
Further, Δp2 > d indicates that the pressure in the humidification tank 100 is always higher than the pressure at the inlet of the stack 20 by a predetermined value during the acceleration of the exhaust. Therefore, the actual flow rate of the gas entering the stack 20 is ensured not to be lower than a certain value, so that the voltage of one cell in the stack is prevented from being very low (namely, single low) due to insufficient instantaneous flow rate of the gas entering the stack 20.
To avoid frequent opening of the exhaust valve 410 due to pressure fluctuations, the specific value of c needs to be determined based on the range of pressure fluctuations. In particular, in this embodiment, c is less than or equal to-2. The specific value of d represents the flow resistance from the humidification tank 100 to the inlet of the electric pile 200 under the target flow, and simulation or test calibration can be performed in advance.
Therefore, when the test working condition changes and the air pressure in the electric pile 20 needs to be changed, the air pressure control device 10 can make the air pressure entering the electric pile 20 reach the target pressure value rapidly by switching the working states of the air inlet assembly 300 and the air outlet pipeline 400. Thus, the dynamic response rate is significantly improved.
In the present embodiment, when the difference between the anode pressure value and the cathode pressure value of the stack 20 to be tested exceeds the preset value, the gas inlet assemblies 300 of the two gas pressure control devices 10 both maintain the target flow rate constant. That is, when the pressure difference between the anode and the cathode of the stack 20 is excessively large, the intake assembly 300 does not increase the target flow rate. In this way, it is ensured that the anode and the cathode maintain pressure balance.
Referring to fig. 1 again, in the present embodiment, the air intake assembly 300 includes a flow controller 310 and an air charging pipeline 320 connected in parallel with the flow controller 310, two ends of the flow controller 310 are respectively communicated with the flow control point and the humidification tank 100, the air charging pipeline 320 includes an air charging valve 321, and the air charging valve 321 is opened when Δp1 is greater than a and Δp2 is less than b.
During normal testing, the charging valve 321 is in a closed state, and the gas output by the gas flow control point only enters the humidification tank 100 through the flow controller 310, and the flow rate of the gas flowing through the humidification tank is limited to a control flow rate by the flow controller 310. At this time, the target flow rate of the intake assembly 300 is the control flow rate of the flow controller 310. And when the test working condition changes and the target pressure value increases and Δp1 is greater than a and Δp2 is less than b, the inflation valve 321 is opened. At this time, the gas can enter the humidification tank 100 through not only the flow controller 310 but also the gas charging line 320. Thus, the target flow rate of the air intake assembly 300 is the sum of the control flow rate of the flow controller 310 and the flow rate of the charge line 320, so the target flow rate will be significantly increased.
Further, in the present embodiment, the outlet of the air charging line 320 is connected to the inlet of the humidification tank 100. Therefore, the gas flowing through the gas charging line 320 can directly enter the humidification tank 100, avoiding sharing part of the piping with the gas flowing through the flow controller 310, and thus the pressure increasing speed of the humidification tank 100 can be further increased.
In this embodiment, the inflation valve 321 and the exhaust valve 410 are electromagnetic valves. The electromagnetic valve has quick response and convenient adjustment.
Referring to fig. 2, in another embodiment, the air intake assembly 300 includes a flow controller 310, two ends of the flow controller 310 are respectively communicated with a flow control point and the humidification tank 100, a control flow of the flow controller 310 is adjustable, and when Δp1 is greater than a and Δp2 is less than b, the flow controller 310 can increase the control flow.
Specifically, the gas output from the gas flow control point enters the humidification tank 100 through the flow controller 310, and the flow controller 310 can limit the flow rate of the gas flowing therethrough to the control flow rate described above. Thus, the control flow of the flow controller 310 is the target flow of the intake assembly 300. It can be seen that by adjusting the control flow rate of the flow controller 310, the target flow rate of the air intake assembly 300 can be adjusted, and the structure of the gas pressure control device 10 is simplified.
When the gas pressure of the to-be-tested electric pile 20 needs to be raised, the gas pressure of the gas flow control point is raised to the target pressure value by the gas pressure control device 10 and the electric pile test platform. Also, when Δp1 is greater than a and Δp2 is less than b, the target flow rate of the air intake assembly 300 increases, so the humidification tank 100 can be rapidly boosted to bring the inlet of the stack to the target pressure value as soon as possible. When the gas pressure of the stack 20 to be tested needs to be reduced, the gas pressure of the gas flow control point is reduced to the target pressure value. Also, the exhaust valve 410 is opening when Δp1 is less than c and Δp2 is greater than d. At this time, the gas can be discharged from the output valve 200 and the exhaust pipe 400 at the same time, so that the gas pressure in the humidification tank 100 and the stack 20 can be rapidly reduced, so that the inlet of the stack 20 can reach the target pressure value as soon as possible. Thus, the dynamic response rate is significantly improved.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The gas pressure control device comprises a humidifying tank, an output valve and an air inlet component for connecting a gas flow control point with the humidifying tank, wherein an inlet and an outlet of a to-be-tested electric pile can be respectively communicated with the outlet of the humidifying tank and the inlet of the output valve; the gas pressure control device further comprises an exhaust pipeline connected with the to-be-tested pile and the output valve in parallel, wherein the exhaust pipeline comprises an exhaust valve, and the exhaust valve is opened when delta P1 is smaller than c and delta P2 is larger than d;
wherein a, b and d are all more than 0, and c is less than 0; Δp1=p-P1, Δp2=p2-P1; p is the target pressure value of the gas flow control point, P1 is the pressure value of the inlet of the electric pile to be tested, and P2 is the pressure value inside the humidifying tank.
2. A gas pressure control device as in claim 1, further comprising a gas source provided at said gas flow control point, said inlet of said gas inlet assembly being in communication with said gas source.
3. The gas pressure control device according to claim 1, wherein the gas inlet assembly comprises a flow controller, both ends of the flow controller are respectively communicated with the flow control point and the humidification tank, the control flow of the flow controller is adjustable, and when Δp1 is greater than a and Δp2 is less than b, the flow controller can increase the control flow.
4. The gas pressure control device of claim 1, wherein the gas inlet assembly comprises a flow controller and an inflation line connected in parallel with the flow controller, wherein two ends of the flow controller are respectively communicated with the flow control point and the humidification tank, the inflation line comprises an inflation valve, and the inflation valve is opened when Δp1 is greater than a and Δp2 is less than b.
5. The gas pressure control device of claim 4, wherein the outlet of the charging line is connected to the inlet of the humidification tank.
6. The gas pressure control device of claim 4, wherein the charge valve and the discharge valve are solenoid valves.
7. The gas pressure control device according to claim 1, wherein an inlet end of the exhaust line is connected to a tank body of the humidification tank.
8. The gas pressure control device of claim 1, wherein a is greater than or equal to 2 and c is less than or equal to-2.
9. A stack testing platform comprising two gas pressure control devices according to any one of claims 1 to 8, wherein the humidification tanks of the two gas pressure control devices are adapted to communicate with the anode and cathode of the stack to be tested, respectively.
10. The stack testing platform of claim 9, wherein the inlet assemblies of both gas pressure control devices maintain the target flow rate constant when the difference between the anode pressure value and the cathode pressure value of the stack under test exceeds a preset value.
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| CN202210025127.3A CN114520352B (en) | 2022-01-10 | 2022-01-10 | Gas pressure control device and electric pile test platform |
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| CN202210025127.3A CN114520352B (en) | 2022-01-10 | 2022-01-10 | Gas pressure control device and electric pile test platform |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060085394A (en) * | 2005-01-24 | 2006-07-27 | 현대자동차주식회사 | Hydrogen supply and vent apparatus of fuel cell system |
| WO2016013320A1 (en) * | 2014-07-24 | 2016-01-28 | 日産自動車株式会社 | Fuel cell system and fuel cell system pressure loss estimation method |
| CN108598527A (en) * | 2018-05-17 | 2018-09-28 | 中车青岛四方机车车辆股份有限公司 | Fuel cell for pneumatic control method, device and system and rail vehicle |
| CN110048144A (en) * | 2018-01-17 | 2019-07-23 | 郑州宇通客车股份有限公司 | A kind of fuel cell system and its air supply control method |
| CN111725546A (en) * | 2020-06-30 | 2020-09-29 | 上海捷氢科技有限公司 | Test system and test method for fuel cell stack working condition |
| CN112582643A (en) * | 2020-12-10 | 2021-03-30 | 武汉格罗夫氢能汽车有限公司 | Hydrogen energy automobile fuel cell air circulation system and hydrogen energy automobile |
| CN113067015A (en) * | 2021-03-04 | 2021-07-02 | 东风汽车集团股份有限公司 | Fuel cell air humidity adjusting system and control method thereof |
| CN213692125U (en) * | 2020-12-22 | 2021-07-13 | 谷夫科技(上海)有限公司 | Fuel cell monitoring system |
| CN113285094A (en) * | 2021-05-19 | 2021-08-20 | 大连锐格新能源科技有限公司 | System and method for improving gas flow control lag of fuel cell |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6706430B2 (en) * | 2001-05-03 | 2004-03-16 | General Motors Corporation | Electronic by-pass of fuel cell cathode gas to combustor |
| JP6330835B2 (en) * | 2016-03-10 | 2018-05-30 | トヨタ自動車株式会社 | Fuel cell system and control method thereof |
-
2022
- 2022-01-10 CN CN202210025127.3A patent/CN114520352B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060085394A (en) * | 2005-01-24 | 2006-07-27 | 현대자동차주식회사 | Hydrogen supply and vent apparatus of fuel cell system |
| WO2016013320A1 (en) * | 2014-07-24 | 2016-01-28 | 日産自動車株式会社 | Fuel cell system and fuel cell system pressure loss estimation method |
| CN110048144A (en) * | 2018-01-17 | 2019-07-23 | 郑州宇通客车股份有限公司 | A kind of fuel cell system and its air supply control method |
| CN108598527A (en) * | 2018-05-17 | 2018-09-28 | 中车青岛四方机车车辆股份有限公司 | Fuel cell for pneumatic control method, device and system and rail vehicle |
| CN111725546A (en) * | 2020-06-30 | 2020-09-29 | 上海捷氢科技有限公司 | Test system and test method for fuel cell stack working condition |
| CN112582643A (en) * | 2020-12-10 | 2021-03-30 | 武汉格罗夫氢能汽车有限公司 | Hydrogen energy automobile fuel cell air circulation system and hydrogen energy automobile |
| CN213692125U (en) * | 2020-12-22 | 2021-07-13 | 谷夫科技(上海)有限公司 | Fuel cell monitoring system |
| CN113067015A (en) * | 2021-03-04 | 2021-07-02 | 东风汽车集团股份有限公司 | Fuel cell air humidity adjusting system and control method thereof |
| CN113285094A (en) * | 2021-05-19 | 2021-08-20 | 大连锐格新能源科技有限公司 | System and method for improving gas flow control lag of fuel cell |
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