CN114520352A - 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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- CN114520352A CN114520352A CN202210025127.3A CN202210025127A CN114520352A CN 114520352 A CN114520352 A CN 114520352A CN 202210025127 A CN202210025127 A CN 202210025127A CN 114520352 A CN114520352 A CN 114520352A
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000005273 aeration Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 103
- 239000000446 fuel Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 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
- 230000011712 cell development Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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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
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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 relates to a gas pressure control device and a galvanic pile test platform. Δ P1 ═ P-P1, Δ P2 ═ P2-P1; p is a target pressure value, P1 is a pressure value of the inlet of the galvanic pile to be tested, and P2 is a pressure value of the interior 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 Δ P1 is greater than a and Δ P2 is less than b, the target flow rate of the air intake assembly is increased, so the humidification tank can be quickly pressurized to bring the inlet of the stack to the target pressure value as quickly as possible. When the gas pressure of the galvanic 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 the delta P1 is smaller than c and the delta P2 is larger than d, the exhaust valve is opened, gas can be simultaneously exhausted from the output valve and the exhaust pipeline, so that the gas pressure in the humidifying tank and the cell stack can be quickly reduced, and the inlet of the cell stack can reach the target pressure value as soon as possible. Therefore, 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 galvanic pile testing platform.
Background
The electric pile test platform is indispensable equipment 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 galvanic pile needs to be switched to test the working state of the galvanic pile under different gas pressure working conditions.
The pressure of the gas may be controlled by a gas flow control point. However, since the gas flow control point and the cell stack inlet generally include elements such as a humidification tank, a heater, and piping, a large volume is inevitably present. Therefore, when the pressure at the gas flow control point is changed rapidly, there is a lag in the actual gas pressure change at the stack inlet and it does not immediately coincide with the required pressure 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 above, it is necessary to provide a gas pressure control device and a stack testing platform for improving the dynamic response rate.
A gas pressure control device comprises a humidifying tank, an output valve and a gas inlet component for connecting a gas flow control point and the humidifying tank, wherein an inlet and an outlet of a galvanic pile to be tested can be respectively communicated with the outlet of the humidifying tank and the inlet of the output valve, the gas inlet component allows gas to flow at a target flow rate, and the gas 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 also comprises a gas exhaust pipeline connected with the to-be-tested electric pile and the output valve in parallel, wherein the gas exhaust pipeline comprises a gas exhaust valve, and the gas exhaust valve is opened when the delta P1 is smaller than c and the delta P2 is larger than d;
wherein a, b and d are all larger than 0, and c is smaller than 0; Δ P1 ═ P-P Δ P2 ═ P2-P1; p is a target pressure value of the gas flow control point, P1 is a pressure value of the inlet of the to-be-tested electric pile, and P2 is a pressure value of the interior of the humidifying tank.
In one embodiment, the gas source is 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 the flow controller can increase the control flow when the delta P1 is larger than a and the delta P2 is smaller than b.
In one embodiment, the air inlet assembly comprises a flow controller and an inflation pipeline connected with the flow control valve in parallel, two ends of the flow controller are respectively communicated with the flow control point and the humidification tank, and the inflation pipeline comprises an inflation valve which is opened when the delta P1 is larger than a and the 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 exhaust pipeline is connected to the tank body of the humidification tank.
In one embodiment, a is greater than or equal to 2 and c is less than or equal to-2.
A galvanic pile test platform comprises two gas pressure control devices as described in any one of the above preferred embodiments, and the humidification tanks of the two gas pressure control devices are used for being respectively communicated with the anode and the cathode of the galvanic pile to be tested.
In one embodiment, when the difference between the pressure value of the anode and the pressure value of the cathode of the to-be-tested pile exceeds a preset value, the gas inlet assemblies of the two gas pressure control devices maintain the target flow constant.
According to the gas pressure control device and the galvanic pile test platform, when the gas pressure of the galvanic pile to be tested needs to be improved, the gas pressure of the gas flow control point is firstly increased to the target pressure value. Further, when Δ P1 is greater than a and Δ P2 is less than b, the target flow rate of the intake assembly is increased, so the humidification tank can be quickly pressurized to bring the inlet of the stack to the target pressure value as quickly as possible. When the gas pressure of the galvanic 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 Δ P1 is less than c and Δ P2 is greater than d. In this case, since the gas can be discharged from the output valve and the exhaust line at the same time, the gas pressures in the humidification tank and the cell stack can be quickly reduced, so that the inlet of the cell stack can reach the target pressure value as soon as possible. Therefore, 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 used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a gas pressure control device according to an embodiment of the present invention;
FIG. 2 is a block diagram of a body pressure control device according to another embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" 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 as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1 and 2, a gas pressure control device 10 is provided. In addition, the present invention further provides a stack testing platform (not shown), which includes two gas pressure control devices 10 described above.
The stack testing platform is used to test the fuel cell stack 20. Specifically, the two gas pressure control devices 10 are used to introduce hydrogen and oxygen to the anode and the cathode of the stack 20, respectively, and can control the pressure and flow rate of the gas.
Referring again to fig. 1, the gas pressure control device 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 line 400.
The air inlet assembly 300 is used for connecting the air flow control point and the humidification tank 100, and the inlet and the outlet of the cell 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 is capable of adjusting the output gas to a desired target pressure value. The target pressure value is dynamically changed according to different test conditions. Specifically, in the present embodiment, the gas pressure control apparatus 10 further includes a gas source 500 disposed at the gas flow control point, and the inlet of the gas inlet assembly 300 is communicated 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 inside of the cell stack 20 through the inlet of the cell stack 20 to be tested after the required humidity is reached in the humidification tank 100. The gas after the reaction in the stack 20 enters the output valve 200 from the outlet of the stack 20 to be tested and is discharged through the output valve 200. Wherein the intake assembly 300 allows gas to flow therethrough at a target flow rate. That is, the flow rate of the gas output from the flow rate control point into the humidification tank 100 may be quantitatively controlled by the gas inlet assembly 300. Also, the output valve 200 can maintain a preset output pressure. Therefore, the air intake assembly 300 cooperates with the output valve 200 to ensure the accuracy and stability of the air pressure in the stack 20. The output valve 200 is typically a back pressure valve. In the present embodiment, the outlet of the output valve 200 is also connected to the tail row 600 to realize the harmless discharge of the gas.
The gas pressure control device 10 needs to acquire three pressure values in the working process, which are a target pressure value (recorded as P) output by the gas flow control point, a pressure value (recorded as P1) at the inlet of the galvanic pile 20 to be tested, and a pressure value (recorded as P1) inside the humidification tank 100. The target pressure value refers to a pressure value required to be reached in the stack 20 under the corresponding test condition. Wherein Δ P1 — P1 represents the difference between the actual pressure at the inlet of the stack 20 and the target pressure value; Δ P2 — P2-P1 represents the difference in the actual pressure at the inlet of the stack 20 compared to the pressure in the humidification tank 100.
During normal testing, the target flow rate of the air inlet assembly 300 is kept constant, so that the air inlet amount and the air pressure in the stack 20 can be kept stable. When Δ P1 is greater than a and Δ P2 is less than b, the intake assembly 300 is able to increase the target flow rate. a. b are all values greater than 0, Δ P1 > a, indicating that the actual pressure at the inlet of the stack 20 has not reached the target pressure value. At this time, the increase of the target flow rate of the air inlet assembly 300 can increase the instantaneous flow rate of the air entering the humidification tank 100, so that the humidification tank 100 is quickly pressurized, and the inlet of the stack reaches the target pressure value as soon as possible.
Further, Δ P2 < 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, the actual flow rate entering the stack 20 can be ensured within a controllable range, so as to avoid causing the transient flow rate entering the stack 20 to be too high.
In order to avoid frequent adjustment of the target flow rate by the intake assembly 300 due to pressure fluctuation, the specific value of a needs to be determined according to the fluctuation range of the pressure. Specifically, in the present embodiment, a is greater than or equal to 2. The specific value of b represents the flow resistance from the humidifying tank 100 to the inlet of the galvanic pile 200 under the target flow, and can be simulated or tested and calibrated in advance.
The exhaust pipeline 400 is connected in parallel with the cell stack 20 to be tested and the output valve 200, and the exhaust pipeline 400 comprises an exhaust valve 410. Specifically, two ends of the exhaust valve 410 are respectively connected to two pipes, and the two pipes are respectively communicated with the upstream of the stack 20 and the downstream of the output valve 200. During normal testing, the exhaust valve 410 is in a closed state, and gas can only be exhausted through the output valve 200, so that the stability of the gas pressure in the stack 20 is maintained.
Further, when Δ P1 is less than c and Δ P2 is greater than d, the exhaust valve 410 is opened. d is a number greater than 0 and c is a number less than 0.Δ P1 < c, indicating that the actual pressure at the inlet of stack 20 has been above the target pressure value. At this time, since the exhaust valve 410 is opened and the gas can be simultaneously exhausted from the output valve 200 and the exhaust line 400, the pressure in the humidification tank 100 and the pressure in the stack can be quickly reduced, so that the pressure at the inlet of the stack 20 can be quickly reduced to the target pressure value.
Specifically, in the present embodiment, the air inlet end of the exhaust line 400 is connected to the tank body of the humidification tank 100. In this way, the gas discharged through the exhaust line 400 does not share a part of the line with the gas flowing through the cell stack 20, and the depressurization rate of the humidification tank 100 can be further increased.
In addition, Δ P2 > d indicates that the pressure in the humidification tank 100 is always higher than the pressure at the inlet of the cell stack 20 by a predetermined value in the process of accelerating the exhaust gas. Therefore, the actual flow rate of the gas entering the stack 20 can be ensured not to be lower than a certain value, so as to avoid that the voltage of a certain single cell in the stack is very low (namely 'single low') due to insufficient instantaneous flow rate of the gas entering the stack 20.
In order to avoid frequent opening of the exhaust valve 410 due to pressure fluctuation, the specific value of c needs to be determined according to the fluctuation range of the pressure. Specifically, 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 stack 200 at the target flow rate, and can be simulated or tested and calibrated in advance.
Therefore, when the test condition changes and the air pressure in the cell stack 20 needs to be changed, the gas pressure control device 10 can make the gas pressure entering the cell stack 20 reach the target pressure value quickly by switching the working states of the air intake assembly 300 and the exhaust pipeline 400. Therefore, the dynamic response rate is significantly improved.
In the present embodiment, when the difference between the pressure value of the anode and the pressure value of the cathode of the cell stack 20 to be tested exceeds the preset value, the gas inlet assemblies 300 of the two gas pressure control devices 10 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. Thus, the pressure balance between the anode and the cathode can be ensured.
Referring to fig. 1 again, in the present embodiment, the air inlet assembly 300 includes a flow controller 310 and an air charging line 320 connected in parallel with the flow control valve 310, two ends of the flow controller 310 are respectively communicated with the flow control point and the humidification tank 100, the air charging line 320 includes an air charging valve 321, and the air charging valve 321 is opened when Δ P1 is greater than a and Δ P2 is less than b.
During normal testing, the gas charging valve 321 is in a closed state, the gas output from the gas flow control point will only pass through the flow controller 310 into the humidification tank 100, and the flow controller 310 limits the flow of the gas flowing through to a control flow. 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 condition changes and the target pressure value is increased, and Δ P1 is greater than a and Δ P2 is less than b, the inflation valve 321 is opened. At this time, the gas can be introduced into the humidification tank 100 not only through the flow rate controller 310 but also through the aeration line 320. Therefore, the target flow rate of the intake assembly 300 is the sum of the control flow rate of the flow controller 310 and the flow rate of the charging line 320, so the target flow rate is significantly increased.
Further, in the present embodiment, the outlet of the charging line 320 is connected to the inlet of the humidification tank 100. Therefore, the gas flowing through the charging line 320 can directly enter the humidification tank 100, avoiding sharing a part of the piping with the gas flowing through the flow controller 310, so that the pressure increase rate of the humidification tank 100 can be further increased.
Specifically, in the present embodiment, the charging valve 321 and the discharging valve 410 are both solenoid valves. The electromagnetic valve has quick response and convenient adjustment.
Referring to fig. 2, in another embodiment, the air inlet assembly 300 includes a flow controller 310, two ends of the flow controller 310 are respectively communicated with the flow control point and the humidification tank 100, the control flow of the flow controller 310 is adjustable, and the flow controller 310 is capable of increasing the control flow when Δ P1 is greater than a and Δ P2 is less than b.
Specifically, the gas outputted from the gas flow control point will enter the humidification tank 100 through the flow controller 310, and the flow controller 310 can limit the flow rate of the gas flowing through to the above-mentioned control flow rate. Therefore, the control flow rate of the flow controller 310 is the target flow rate of the intake assembly 300. It can be seen that the target flow rate of the gas inlet assembly 300 can be adjusted by adjusting the control flow rate of the flow controller 310, and the structure of the gas pressure control device 10 is further simplified.
In the gas pressure control device 10 and the stack test platform, when the gas pressure of the to-be-tested stack 20 needs to be raised, the gas pressure of the gas flow control point is raised to a target pressure value. Also, the target flow rate of the air intake assembly 300 is increased when Δ P1 is greater than a and Δ P2 is less than b, so the humidification tank 100 can be quickly pressurized to bring the inlet of the stack to the target pressure value as quickly as possible. When the gas pressure of the electric pile 20 to be tested needs to be reduced, the gas pressure of the gas flow control point is firstly reduced to the target pressure value. Also, the exhaust valve 410 is open when Δ P1 is less than c and Δ P2 is greater than d. At this time, since the gas can be discharged from the output valve 200 and the exhaust pipe 400 at the same time, the gas pressures in the humidification tank 100 and the cell stack 20 can be quickly reduced so that the inlet of the cell stack 20 can reach the target pressure value quickly. Therefore, the dynamic response rate is significantly improved.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A gas pressure control device comprises a humidifying tank, an output valve and a gas inlet component for connecting a gas flow control point and the humidifying tank, wherein an inlet and an outlet of a galvanic pile to be tested can be respectively communicated with the outlet of the humidifying tank and the inlet of the output valve, and the gas inlet component is characterized in that the gas inlet component allows gas to flow at a target flow rate and 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 also comprises a gas exhaust pipeline connected with the to-be-tested electric pile and the output valve in parallel, wherein the gas exhaust pipeline comprises a gas exhaust valve, and the gas exhaust valve is opened when the delta P1 is smaller than c and the delta P2 is larger than d;
wherein a, b and d are all larger than 0, and c is smaller than 0; Δ P1 ═ P-P1, Δ P2 ═ P2-P1; p is a target pressure value of the gas flow control point, P1 is a pressure value of the inlet of the to-be-tested electric pile, and P2 is a pressure value of the interior of the humidifying tank.
2. The gas pressure control device as claimed in claim 1, further comprising a gas source provided at the gas flow control point, the inlet of the gas inlet assembly being in communication with the gas source.
3. The gas pressure control device as claimed in claim 1, wherein the gas inlet assembly includes a flow controller, both ends of the flow controller are respectively communicated with the flow control point and the humidification tank, a control flow of the flow controller is adjustable, and the flow controller is capable of increasing the control flow when Δ P1 is greater than a and Δ P2 is less than b.
4. The gas pressure control device as claimed in claim 1, wherein the gas inlet assembly comprises a flow controller and an inflation line connected in parallel with the flow control valve, both 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 Δ P1 is greater than a and Δ P2 is less than b.
5. The gas pressure control device as claimed in claim 4, wherein an outlet of the aeration line is connected to an inlet of the humidification tank.
6. The gas pressure control device according to claim 4, wherein the charge valve and the discharge valve are both solenoid valves.
7. The gas pressure control device as claimed in claim 1, wherein an intake end of the exhaust line is connected to a tank body of the humidification tank.
8. Gas pressure control apparatus according to claim 1, wherein a is greater than or equal to 2, c is less than or equal to-2.
9. A galvanic pile test 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 respectively communicated with the anode and the cathode of the galvanic pile to be tested.
10. The stack testing platform according to claim 9, wherein the gas inlet assemblies of both of the gas pressure control devices maintain the target flow rate constant when a difference between a pressure value of an anode and a pressure value of a cathode 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 (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020164508A1 (en) * | 2001-05-03 | 2002-11-07 | Wheat William S. | Electronic by-pass of fuel cell cathode gas to combustor |
| 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 |
| US20170263960A1 (en) * | 2016-03-10 | 2017-09-14 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system and control method of the same |
| 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 |
-
2022
- 2022-01-10 CN CN202210025127.3A patent/CN114520352B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020164508A1 (en) * | 2001-05-03 | 2002-11-07 | Wheat William S. | Electronic by-pass of fuel cell cathode gas to combustor |
| 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 |
| US20170263960A1 (en) * | 2016-03-10 | 2017-09-14 | Toyota Jidosha Kabushiki Kaisha | Fuel cell system and control method of the same |
| 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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