CN110374856B - Hydrogen injection pump test system for fuel cell - Google Patents
Hydrogen injection pump test system for fuel cell Download PDFInfo
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- CN110374856B CN110374856B CN201910571965.9A CN201910571965A CN110374856B CN 110374856 B CN110374856 B CN 110374856B CN 201910571965 A CN201910571965 A CN 201910571965A CN 110374856 B CN110374856 B CN 110374856B
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- hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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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
- H01M8/04305—Modeling, demonstration models of fuel cells, e.g. for training purposes
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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 hydrogen ejector pump test system for a fuel cell, which comprises a hydrogen supply subsystem, a nitrogen supply subsystem, a hydrogen consumption simulation subsystem, a humidification subsystem, a monitoring subsystem, a simulator and a controller, wherein the hydrogen supply subsystem is used for simulating the actual hydrogen supply process and the related control working conditions of the fuel cell, the nitrogen supply subsystem is used for simulating the permeation of nitrogen on the cathode side of the actual fuel cell to the anode side, the hydrogen consumption simulation subsystem is used for simulating the hydrogen consumption of the actual fuel cell, the humidification subsystem is used for simulating the actual relative humidity of air in a fuel cell stack, the monitoring subsystem is used for monitoring the related data of each simulation link of the hydrogen ejector pump test system for the fuel cell, the simulator is used for simulating the hydrogen consumption and the nitrogen permeation, and the controller is used for regulating the hydrogen supply pressure, the opening and closing of a hydrogen discharge valve, the opening and closing. Compared with the prior art, the method has the advantages of vivid simulation, high test precision and the like.
Description
Technical Field
The invention relates to the technical field of new energy automobile fuel cell test systems and control, in particular to a hydrogen injection pump test system for a fuel cell.
Background
The hydrogen fuel cell utilizes the chemical reaction of hydrogen and oxygen to generate electric energy to provide power for the automobile, has the characteristics of negative emission, no pollution, high energy utilization rate and the like, and is the development direction of new energy automobile power in the future.
Fuel cell needs sufficient hydrogen and oxygen to satisfy the vehicle power demand in the course of the work, can remain a large amount of nitrogen gas at the cathode side after hydrogen and oxygen chemical reaction, and this nitrogen gas can permeate the anode side through proton exchange membrane, if discharge in time can hinder hydrogen to get into the battery pile, and serious person causes the monolithic battery to take place the antipole, damages the battery pile even, if directly discharge, and hydrogen has very big loss. Because of the characteristics of silence, no power consumption, no relative motion part, reliable performance and the like, many researchers adopt the ejector pump to realize hydrogen circulation and improve the utilization rate of hydrogen, but the ejector pump can more accurately verify the performance of an actual fuel cell system by testing the actual fuel cell system, the actual fuel cell system is expensive at present, the testing cost is high, certain damage risk is also possessed, and many research institutions do not have such research conditions.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a hydrogen jet pump testing system for a fuel cell.
The purpose of the invention can be realized by the following technical scheme:
a hydrogen injection pump test system for a fuel cell is characterized by comprising a hydrogen supply subsystem, a nitrogen supply subsystem, a hydrogen consumption simulation subsystem, a humidification subsystem, a monitoring subsystem, a simulator and a controller which are connected with one another, wherein the hydrogen supply subsystem is used for simulating the actual hydrogen supply process and related control working conditions of the fuel cell, the nitrogen supply subsystem is used for simulating the permeation of nitrogen on the cathode side of the actual fuel cell to the anode side, the hydrogen consumption simulation subsystem is used for simulating the actual hydrogen consumption of the fuel cell, the humidification subsystem is used for simulating the actual relative humidity of air in a fuel cell stack, the monitoring subsystem is used for monitoring relevant data of each simulation link of the hydrogen injection pump test system for the fuel cell, and the controller is used for monitoring the feedback and established control strategies of the monitoring subsystem, the simulator is used for simulating hydrogen consumption and nitrogen permeation.
Further, the hydrogen supply subsystem include hydrogen cylinder, mass flow meter, pressure regulating valve, ejector pump, pressure monitoring device, first volume flowmeter, flow resistance adjusting device, hydrogen discharge valve and hydrogen discharge pipeline, the hydrogen cylinder the mass flow meter pressure regulating valve with the ejector pump connects gradually in proper order, the export of ejector pump is through behind the pressure monitoring device among the monitoring subsystem with flow resistance adjusting device is connected, flow resistance adjusting device through the pipeline with hold the chamber entry in the humidification subsystem is connected, the jet orifice of ejector pump pass through behind the first volume flowmeter in proper order with the hydrogen discharge valve with the hydrogen discharge pipeline is connected.
Furthermore, the nitrogen supply subsystem comprises a second proportional valve and a nitrogen cylinder, and the nitrogen cylinder is connected with the accommodating cavity in the humidification subsystem after passing through the second proportional valve.
Furthermore, the hydrogen consumption simulation subsystem comprises a first proportional valve and a second volume flow meter, wherein one end of the first proportional valve is connected with a hydrogen discharge pipeline in the hydrogen supply subsystem, and the other end of the first proportional valve is connected with a containing cavity in the humidification subsystem after passing through the second volume flow meter.
Furthermore, the humidification subsystem comprises an accommodating cavity, a water supply pump, a heating device and a water drainage pipeline, wherein the water supply pump is connected with the accommodating cavity through a pipeline, the heating device is arranged in a water area in the accommodating cavity, and the water drainage pipeline is arranged at the bottom of the accommodating cavity.
Furthermore, the monitoring subsystem comprises a pressure monitoring device, a liquid level monitoring device, a water temperature monitoring device, a gas temperature monitoring device, a nitrogen concentration monitoring device and a gas relative humidity monitoring device, wherein the water temperature monitoring device is arranged in a water area inside a cavity in the humidification subsystem, the gas temperature monitoring device, the nitrogen concentration monitoring device and the gas relative humidity monitoring device are arranged in a water-free area at the top of the cavity in the humidification subsystem, the pressure monitoring device is arranged at a pipeline position between an ejection pump outlet flow resistance adjusting device in the hydrogen supply subsystem, and two ends of the liquid level monitoring device are respectively connected with the water-free area at the top of the cavity and the bottom of the cavity.
Furthermore, the liquid level monitoring device adopts a differential pressure transmitting device.
Further, the simulator is respectively connected with the second proportional valve in the nitrogen supply subsystem and the first proportional valve in the hydrogen consumption simulation subsystem.
Furthermore, the input end of the controller is respectively connected with a liquid level monitoring device and a gas relative humidity monitoring device in the monitoring subsystem, and the output end of the controller is respectively connected with a pressure regulating valve and a hydrogen exhaust valve in the hydrogen supply subsystem and a water feeding pump and a heating device in the humidification subsystem.
Compared with the prior art, the invention has the following advantages:
(1) the testing system comprises a hydrogen supply subsystem, a nitrogen supply subsystem, a hydrogen consumption simulation subsystem, a humidification subsystem, a monitoring subsystem, a simulator and a controller which are mutually connected, can simulate the actual working process of the hydrogen circulation system of the fuel cell, and is more practical, high in testing precision, reliable in control scheme and low in cost.
(2) The nitrogen supply subsystem can simulate the circulation of three gases, namely hydrogen, nitrogen and water vapor in the hydrogen circulation system, and can monitor the concentration of the nitrogen in the accommodating cavity.
(3) The monitoring subsystem can detect the injection performance of the hydrogen injection pump in a state of mixing three gases and test the volume flow of the circulating gas.
Drawings
FIG. 1 is a block diagram of the structure and principle of the present invention;
in the figure, 1 is a hydrogen cylinder, 2 is a mass flow meter, 3 is a pressure regulating valve, 4 is an ejector pump, 5 is a pressure monitoring device, 6 is a liquid level monitoring device, 7 is a first volume flow meter, 8 is a water feeding pump, 9 is a water discharging pipeline, 10 is a heating device, 11 is a water temperature monitoring device, 12 is a flow resistance adjusting device, 13 is a hydrogen discharging valve, 14 is a hydrogen discharging pipeline, 15 is a first proportional valve, 16 is a second volume flow meter, 17 is a containing cavity, 18 is a gas temperature monitoring device, 19 is a nitrogen concentration monitoring device, 20 is a gas relative humidity monitoring device, 21 is a second proportional valve, 22 is a nitrogen cylinder, 23 is a simulator, and 24 is a controller.
Detailed Description
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, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
Examples
Fig. 1 shows a structure and a schematic block diagram of a hydrogen jet pump test system for a fuel cell according to the present invention:
comprises a hydrogen supply subsystem, a nitrogen supply subsystem, a hydrogen consumption simulation subsystem, a humidification subsystem, a monitoring subsystem, a simulator 23 and a controller 24; the hydrogen supply subsystem comprises a hydrogen cylinder 1, a mass flowmeter 2, a pressure regulating valve 3, an injection pump 4, a flow resistance regulating device 12, a first volume flowmeter 7, a hydrogen discharge valve 13 and a hydrogen discharge pipeline 14; the nitrogen supply subsystem comprises a nitrogen cylinder 22 and a second proportional valve 21; the hydrogen consumption simulation subsystem comprises a second volumetric flow meter 16 and a first proportional valve 15; the humidifying subsystem comprises a cavity 17, a water supply pump 8, a heating device 10 and a drainage pipeline 9; the monitoring subsystem comprises a pressure monitoring device 5, a liquid level monitoring device 6, a water temperature monitoring device 11, a gas temperature monitoring device 18, a gas relative humidity monitoring device 20 and a nitrogen concentration monitoring device 19; the simulator 23 is connected with the second proportional valve 21 of the nitrogen supply subsystem and the first proportional valve 15 of the hydrogen consumption simulation subsystem; the controller 24 is connected to the pressure regulating valve 3, the water feed pump 8, the heating device 10, and the hydrogen discharge valve 13.
The hydrogen supply subsystem comprises a mass flow meter 2, a pressure regulating valve 3, an ejector pump 4, a flow resistance regulating device 12, a hydrogen discharge valve 13, a controller 24 and a hydrogen discharge valve 13, wherein the mass flow meter 2 is arranged on an outlet pipeline of a hydrogen cylinder 1, the pressure regulating valve 3 is arranged on a pipeline at the rear end of the mass flow meter 2, the outlet of the ejector pump 4 is connected with an inlet of the flow resistance regulating device 12, the outlet of the flow resistance regulating device 12 is connected with a containing cavity 17 through a pipeline, the hydrogen discharge valve 13 is arranged on a pipeline at the rear end of the outlet of the containing cavity 17, the pressure regulating valve 3 is controlled by the controller 24 to regulate the hydrogen supply pressure and flow, the actual hydrogen supply system of a fuel cell is simulated, the mass flow meter 2 is used for monitoring the hydrogen flow, the containing.
And in the nitrogen supply subsystem, the inlet of a second proportional valve 21 is arranged on a pipeline at the outlet of a nitrogen cylinder 22, the outlet of the second proportional valve 21 is connected with the accommodating cavity 17 through a pipeline, and the simulator 23 is adopted to regulate the opening degree of the second proportional valve 21 to realize the regulation of the nitrogen concentration in the accommodating cavity 17 according to the concentration of the nitrogen permeating from the cathode side to the anode side of the actual fuel cell and simulate the nitrogen concentration at the anode side of the fuel cell.
One end of a first proportional valve 15 is connected with a cavity 17, the other end of the first proportional valve is connected with a pipeline behind a hydrogen discharge valve 13, a second volume flow meter 16 is installed on the pipeline between the cavity 17 and the first proportional valve 15, the simulator 23 is adopted to adjust the opening of the first proportional valve 15 to adjust the volume flow of mixed gas according to the actual consumed volume flow of hydrogen to simulate the hydrogen consumption of a real fuel cell, and the second volume flow meter 16 is adopted to monitor the hydrogen consumption.
The humidification subsystem, the feed pump 8 is connected on holding the chamber 17 through the pipeline, and water drainage pipe 9 installs in holding the chamber 17 bottom, and heating device 10 installs and has the water region in holding the inside of chamber 17, adopts controller 24 to control heating device 10, and through heating the water that holds in the chamber 17, steam is produced, controls the air relative humidity that holds the intracavity, the true relative humidity of the interior air of simulation fuel cell stack.
The first volume flowmeter 7 is installed on the circulation loop of the hydrogen supply subsystem, the inlet of the first volume flowmeter 7 is connected to a pipeline between the outlet of the cavity 17 and the hydrogen discharge valve 13, and the outlet of the first volume flowmeter is connected to the injection port of the injection pump 4.
The pressure monitoring device 5 is arranged on a pipeline between the ejector pump 4 and the flow resistance adjusting device 12, the water temperature monitoring device 11 is arranged in a water area in the cavity 17, and the gas temperature monitoring device 18, the gas relative humidity monitoring device 20 and the nitrogen concentration monitoring device 19 are arranged in a water-free area on the upper portion of the cavity 17.
The liquid level monitoring device 6 adopts a differential pressure transmitting device, one end of the differential pressure transmitting device is connected with the upper end anhydrous region of the containing cavity 17, the other end of the differential pressure transmitting device is connected with the bottom of the containing cavity 17, and the liquid level height is monitored through the pressure difference between the upper end and the lower end.
The controller 24 is in communication connection with the liquid level monitoring device 6 and the feed pump 8, the output end of the liquid level monitoring device 6 is connected with the input end of the controller 24, the output end of the controller 24 is connected with the input end of the feed pump 8, the on-off of the feed pump 8 is controlled, the water level of the accommodating cavity 17 is adjusted, and the actual flow field volume in the fuel cell stack is simulated.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A fuel cell hydrogen ejector pump test system is characterized by comprising a hydrogen supply subsystem, a nitrogen supply subsystem, a hydrogen consumption simulation subsystem, a humidification subsystem, a monitoring subsystem, a simulator (23) and a controller (24) which are connected with one another, wherein the hydrogen supply subsystem is used for simulating an actual hydrogen supply process and related control working conditions of a fuel cell, the nitrogen supply subsystem is used for simulating permeation of nitrogen on the cathode side of the actual fuel cell to the anode side, the hydrogen consumption simulation subsystem is used for simulating the actual fuel cell hydrogen consumption, the humidification subsystem is used for simulating the actual relative humidity of air in a fuel cell stack, the monitoring subsystem is used for monitoring data related to each simulation link of the fuel cell hydrogen ejector pump test system, and the controller (24), the simulator (23) is used for regulating hydrogen supply pressure, opening and closing of a hydrogen discharge valve, opening and closing of a water replenishing pump and power of a heating device according to feedback and a set control strategy of the monitoring subsystem, and is used for simulating hydrogen consumption and nitrogen permeation;
the hydrogen supply subsystem comprises a hydrogen cylinder (1), a mass flowmeter (2), a pressure regulating valve (3), an ejector pump (4), a pressure monitoring device (5), a first volume flowmeter (7), a flow resistance regulating device (12), a hydrogen discharge valve (13) and a hydrogen discharge pipeline (14), the hydrogen cylinder (1), the mass flow meter (2), the pressure regulating valve (3) and the ejector pump (4) are sequentially connected, the outlet of the ejector pump (4) is connected with the flow resistance adjusting device (12) after passing through the pressure monitoring device (5) in the monitoring subsystem, the flow resistance adjusting device (12) is connected with an inlet of a cavity (17) in the humidification subsystem through a pipeline, an injection port of the injection pump (4) passes through the first volumetric flowmeter (7) and then is sequentially connected with the hydrogen discharge valve (13) and the hydrogen discharge pipeline (14);
the nitrogen supply subsystem comprises a second proportional valve (21) and a nitrogen bottle (22), and the nitrogen bottle (22) is connected with the accommodating cavity (17) in the humidification subsystem after passing through the second proportional valve (21);
the hydrogen consumption simulation subsystem comprises a first proportional valve (15) and a second volume flow meter (16), one end of the first proportional valve (15) is connected with a hydrogen discharge pipeline (14) in the hydrogen supply subsystem, and the other end of the first proportional valve is connected with a containing cavity (17) in the humidification subsystem after passing through the second volume flow meter (16);
the humidifying subsystem comprises an accommodating cavity (17), a water feeding pump (8), a heating device (10) and a water discharging pipeline (9), wherein the water feeding pump (8) is connected with the accommodating cavity (17) through a pipeline, the heating device (10) is arranged in a water area inside the accommodating cavity (17), and the water discharging pipeline (9) is arranged at the bottom of the accommodating cavity (17).
2. The fuel cell hydrogen ejector pump test system according to claim 1, wherein the monitoring subsystem comprises a pressure monitoring device (5), a liquid level monitoring device (6), a water temperature monitoring device (11), a gas temperature monitoring device (18), a nitrogen concentration monitoring device (19) and a gas relative humidity monitoring device (20), the water temperature monitoring device (11) is arranged in a water-containing area inside a cavity (17) in the humidification subsystem, the gas temperature monitoring device (18), the nitrogen concentration monitoring device (19) and the gas relative humidity monitoring device (20) are arranged in a water-free area at the top of the cavity (17) in the humidification subsystem, the pressure monitoring device (5) is arranged at a pipeline position between an outlet of an ejector pump (4) in the hydrogen supply subsystem and a flow resistance adjusting device (12), and two ends of the liquid level monitoring device (6) are respectively connected with the water-free area at the top of the containing cavity (17) and the bottom of the containing cavity (17).
3. The fuel cell hydrogen ejector pump test system according to claim 2, wherein the liquid level monitoring device (6) adopts a differential pressure transmission device.
4. The fuel cell hydrogen jet pump test system according to claim 1, wherein the simulator (23) is connected to the second proportional valve (21) in the nitrogen supply subsystem and the first proportional valve (15) in the hydrogen consumption simulation subsystem, respectively.
5. The fuel cell hydrogen ejector pump test system according to claim 1, wherein the input end of the controller (24) is respectively connected with a liquid level monitoring device (6) and a gas relative humidity monitoring device (20) in the monitoring subsystem, and the output end of the controller (24) is respectively connected with a pressure regulating valve (3) and a hydrogen exhaust valve (13) in the hydrogen supply subsystem and a water supply pump (8) and a heating device (10) in the humidification subsystem.
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| CN201910571965.9A CN110374856B (en) | 2019-06-28 | 2019-06-28 | Hydrogen injection pump test system for fuel cell |
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| CN201910571965.9A CN110374856B (en) | 2019-06-28 | 2019-06-28 | Hydrogen injection pump test system for fuel cell |
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| CN110374856B true CN110374856B (en) | 2021-02-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112228331B (en) * | 2020-09-15 | 2022-03-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Hydrogen circulating pump capability test system |
| CN112510229B (en) * | 2020-12-04 | 2022-07-22 | 上海捷氢科技股份有限公司 | Fuel cell system and method and device for calculating hydrogen metering ratio of fuel cell system |
| CN112761937B (en) * | 2021-01-15 | 2023-07-28 | 中汽研汽车检验中心（天津）有限公司 | Hydrogen pump matching test device and test method for hydrogen fuel cell engine |
| CN113340788A (en) * | 2021-06-10 | 2021-09-03 | 同济大学 | Fuel cell gas permeation quantitative detection 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 |
| NL2031310B1 (en) * | 2022-03-16 | 2023-12-18 | China Automotive Tech & Res Ct | Ejector test device for hydrogen fuel cell engine and test method |
| CN115597852B (en) * | 2022-11-16 | 2023-04-21 | 深圳市氢蓝时代动力科技有限公司 | Electromagnetic proportional valve testing device and method for fuel cell system |
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| KR100551420B1 (en) * | 2004-07-20 | 2006-02-09 | 현대모비스 주식회사 | Test system for Balance of Plant of Fuel Cell Automobile |
| KR100968506B1 (en) * | 2009-10-23 | 2010-07-07 | 한국에너지기술연구원 | Differential pressure simulator for fuel cell stack |
| JP6245128B2 (en) * | 2014-10-02 | 2017-12-13 | トヨタ自動車株式会社 | Purge interval determination device for fuel cell system |
| CN105807233A (en) * | 2016-03-17 | 2016-07-27 | 上海新源动力有限公司 | Testing platform of fuel cell hydrogen system |
| CN109033579B (en) * | 2018-07-11 | 2020-07-17 | 清华大学 | Design method and device of fuel cell wide-area ejector |
| CN109524694B (en) * | 2018-11-29 | 2022-02-25 | 一汽解放汽车有限公司 | Fuel cell test bench |
| CN109713334B (en) * | 2019-02-01 | 2023-10-31 | 清华大学 | Fuel cell stack test bench and use method thereof |
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