CN115706247A - Fuel cell test system and control method - Google Patents
Fuel cell test system and control method Download PDFInfo
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- CN115706247A CN115706247A CN202110943655.2A CN202110943655A CN115706247A CN 115706247 A CN115706247 A CN 115706247A CN 202110943655 A CN202110943655 A CN 202110943655A CN 115706247 A CN115706247 A CN 115706247A
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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 the technical field of fuel cells, in particular to a fuel cell testing system and a control method, wherein the fuel cell testing system comprises a gas source system for supplying gas to the fuel cell testing system; the system comprises an ejector gas supply system for outputting gas supplied by a gas source system through an ejector, a consumption system for simulating the operation of a galvanic pile to receive the gas output by the ejector gas supply system, and a temperature and humidity control system for sending the gas of the gas source system and/or the gas discharged by the consumption system into the ejector gas supply system after temperature and humidity control treatment; the ejector can simulate the operation environment of the galvanic pile, and verify the working condition characteristics of the ejector under the conditions of simulating the consumption, the exhaust, the drainage and the like of the gas generated by the operation of the galvanic pile; simulating oxygen circulating gas components of the galvanic pile, wherein the injection characteristic is closer to the real running condition of the galvanic pile; the method has the advantages of multiple tests of the ejector, accurate control of backflow flow resistance, humidity and temperature, and debugging and verification of the control strategy of the ejector of the fuel cell engine.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a fuel cell testing system and a control method.
Background
The fuel cell engine system is a new type of fuel cell power generation system, which converts chemical energy generated by chemical reactions in the device into electrical energy through the electrochemical device. The hydrogen fuel cell engine system is used as an important carrier for hydrogen fuel application, has the characteristics of no pollution, environmental friendliness and the like, and is an important technical route for realizing carbon neutralization and carbon peak reaching. The main components of the fuel cell engine include an air motor, a hydrogen injector/proportional valve, a water pump, a hydrogen circulation pump, and the like.
Starting of a fuel cell engine in a low-temperature environment is a common problem, and a hydrogen circulating pump is often faced with the problem that the circulating pump cannot be started due to icing of cooling water in a cold starting process. In order to solve the problems of the hydrogen circulating pump in the aspects of cold start, operation reliability and the like, the ejector is gradually introduced into the field of fuel cells to replace the hydrogen circulating pump. Ejectors are generally classified by the state of the interacting medium in the ejector: (1) The ejector ejects the medium with the same phase state as the ejected medium; (2) The ejector and the ejected medium are in different phase states, and the phase states of the ejected medium and the ejected medium are not changed in the mixing process; (3) The ejector can eject or change the phase state of the ejected medium.
The fuel cell ejector belongs to a gas-gas ejector and mainly has the function of replacing a hydrogen circulating pump, so that gas which is not completely utilized by a galvanic pile can be recycled to enter an inlet of the galvanic pile, the gas can be repeatedly utilized, and the hydrogen utilization rate of a fuel cell is improved. The fuel cell ejector effectively solves the problems that a hydrogen circulating pump is easy to clamp stagnation, high in working power consumption, high in durability and the like, and performance development of the fuel cell ejector becomes an increasingly important work. The existing ejector testing method generally tests the ejection and ejection performance of the ejector under a dry condition, and lacks a global testing system and a complete component-level and system-level control method.
At present, the content of a fuel cell ejector testing system mainly comprises controlling the gas pressure at an inlet of an ejector, controlling and adjusting the gas pressure, humidity and the like of a return flow path, simulating the working condition of a stack, and testing the ejector ratio of the ejector, and in patent CN210692688U, a testing system-level testing method of the fuel cell ejector is provided.
However, for the simulation of the operation condition of the fuel cell, the simulation of the reaction gas components of the fuel cell cannot be realized; the gas consumption for simulating the operation of the fuel cell is controlled by the regulating valve, and the control accuracy is poor; the method is mainly used for simulating the operation condition of the fuel cell, has limitation on the simulation of the backflow amount and the flow resistance of the ejector, can only complete the function test of the single proportional valve and the ejector, and cannot realize Map test matched with the operation condition of the fuel cell.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a fuel cell test system and a control method are provided which overcome the technical problems in the background art.
In order to solve the technical problems, the invention adopts the technical scheme that:
a fuel cell testing system includes
A gas source system for supplying gas to the fuel cell testing system;
the ejector gas supply system outputs the gas supplied by the gas source system through the ejector;
the consumption system simulates the operation of the galvanic pile and receives the gas output by the ejector gas supply system; and
and the temperature and humidity control system is used for sending the gas of the gas source system and/or the gas exhausted by the consumption system into the ejector gas supply system after temperature and humidity control treatment.
In order to solve the technical problem, the invention adopts another technical scheme as follows:
the control method of the fuel cell test system comprises
Starting a fuel cell testing system, selecting a testing mode according to whether gas components are simulated or not, and if so, entering a preset ejector performance open-loop humidification testing mode by the fuel cell testing system; if not, the fuel cell test system enters a preset ejector performance closed-loop test mode or a double-injection-path performance test.
The invention has the beneficial effects that: the fuel cell test system can simulate the operation environment of the galvanic pile and verify the working condition characteristics of the ejector under the conditions of simulating the consumption, the exhaust, the drainage and the like of the gas generated by the operation of the galvanic pile; simulating oxygen circulating gas components of the galvanic pile, wherein the injection characteristic is closer to the real running condition of the galvanic pile; the open-loop test of the ejector can be carried out, and the accurate control of the ejection reflux flow resistance, the humidity and the temperature can be realized; the closed-loop test of the ejector can be carried out, and the system can debug and verify the control strategy of the ejector of the fuel cell engine; the performance test of a single proportional valve/ejector and an ejector can be carried out, and the performance test of a proportional valve/ejector and an ejector and a Bypass proportional valve/ejector can also be carried out; the full-working-condition Map test of the fuel cell engine ejector in the engine running process can be realized.
Drawings
Fig. 1 is a schematic diagram of a fuel cell testing system according to a first embodiment of the present invention;
FIG. 2 is a gas flow pattern (black arrows) of a second embodiment of the present invention;
FIG. 3 is a gas flow pattern (black arrows) of a third embodiment of the present invention;
FIG. 4 is a gas flow pattern (black arrows) of a fourth embodiment of the present invention;
FIG. 5 is a gas flow pattern (black arrows) of a fifth embodiment of the present invention;
FIG. 6 is a schematic flow chart of a fifth embodiment of the present invention;
description of reference numerals: 1. a mixing chamber; 2. a first flow meter; 3. a first pressure sensor; 4. first proportional valve/first injector; 5. a second flow meter; 6. a second pressure sensor; 7. a second proportional valve/second injector; 8. a third pressure sensor; 9. an ejector; 10. a first three-way valve; 11. a fourth pressure sensor; 12. a first temperature sensor; 13. a first humidity sensor; 14. a first electrically operated valve; 15. a second electrically operated valve; 16. a third electrically operated valve; 17. a second temperature sensor; 18. a fifth pressure sensor; 19. a third temperature sensor; 20. a second humidity sensor; 21. a third flow meter; 22. a fourth electrically operated valve; 23. a first water divider; 24. a first drain valve; 25. a pile simulation cavity; 26. a safety valve; 27. an exhaust valve; 28. a mass flow controller; 29. a second water separator; 30. a second drain valve; 31. an air supply system; 311. a source of hydrogen gas; 312. a nitrogen source; 313. an air source; 314. a fourth proportional valve; 315. a fifth proportional valve; 316. a sixth proportional valve; 32. a sixth pressure sensor; 33. a hydrogen concentration/oxygen concentration sensor; 34. a buffer chamber; 35. third proportional valve/third injector; 36. a seventh pressure sensor; 37. a second three-way valve; 38. a first heater; 39. a third three-way valve; 40. an eighth pressure sensor; 41. a fourth temperature sensor; 42. a third humidity sensor; 43. a membrane humidifier; 44. a ninth pressure sensor; 45. a fifth temperature sensor; 46. a throttle valve; 47. a water pump; 48. a fourth three-way valve; 49. a second heater; 50. a heat sink; 51. a flow resistance regulator.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 1 to 6, a fuel cell testing system includes
A gas source system for supplying gas to the fuel cell testing system;
the ejector gas supply system outputs the gas supplied by the gas source system through the ejector;
the consumption system simulates the operation of the galvanic pile and receives the gas output by the ejector gas supply system; and
and the temperature and humidity control system is used for sending the gas of the gas source system and/or the gas exhausted by the consumption system into the ejector gas supply system after temperature and humidity control treatment.
Further, the gas source system comprises a hydrogen source, a nitrogen source, an air source, a mixing cavity and a buffer cavity, wherein the hydrogen source, the nitrogen source and the air source are respectively communicated with the mixing cavity through an electric valve; the hydrogen source, the nitrogen source and the air source are respectively communicated with the buffer cavity through proportional valves;
the mixing cavity is communicated with an ejector gas supply system; and the buffer cavity and the consumption system are communicated with the temperature and humidity control system through a second three-way valve.
Has the beneficial effects that: through the arrangement of the hydrogen source, the nitrogen source and the air source, different air sources can be provided for the ejector during testing, and the requirement that the hydrogen concentration/oxygen concentration reaches the target requirement is met; through the setting of hybrid chamber, cushion chamber, can mix the steady voltage with gas respectively to satisfy the main air feed of ejector and the needs of backward flow air feed.
Further, the ejector gas supply system comprises an ejector, a first three-way valve, a main ejector gas source gas supply system and an ejector return port gas supply system, wherein the main ejector gas source gas supply system comprises a first flowmeter, a second flowmeter, a first proportional valve/first ejector, a second proportional valve/second ejector and a third proportional valve/third ejector;
the mixing cavity, the second flowmeter, the second proportional valve/second ejector and the ejector are communicated in sequence to form a main injection path; the ejector is communicated with the consumption system through a first three-way valve;
the mixing cavity, the first flowmeter, the first proportional valve/first injector and the first three-way valve are communicated in sequence to form a bypass injection path.
From the above description, it can be known that the performance test of the single proportional valve/ejector + ejector can be performed by the arrangement of the main injection path and the Bypass injection path, and the performance test of the proportional valve/ejector + Bypass hydrogen injection/proportional valve (dual injection path) can also be performed.
Furthermore, the consumption system comprises a pile simulation cavity, a safety valve, an exhaust valve, a mass flow controller, a second water divider and a drain valve, wherein the safety valve, the exhaust valve and the second water divider are respectively communicated with the pile simulation cavity, and the mass flow controller and the second drain valve are respectively communicated with the second water divider.
As can be seen from the above description, the gas consumption for the simulation cell stack can be realized by the cell stack simulation chamber, and the gas flow discharge is controlled by the mass flow controller, including a safety valve (protection pipeline, overpressure protection); the water distributor, the second drain valve and the rack device can be used for verifying the water distribution performance of the water distributor, and the exhaust valve is used for simulating the exhaust control of the single-chip voltage over-low Purge in the running process of the galvanic pile and can simulate the verification of gas consumption, drainage and exhaust control strategies of the galvanic pile.
Further, the pile simulation cavity is communicated with a second three-way valve to form a return flow path; and a flow resistance regulator is also arranged between the pile simulation cavity and the second three-way valve.
As is apparent from the above description, the flow resistance of the return path can be adjusted by the flow resistance adjuster.
Further, the temperature and humidity control system comprises a first heater, a third three-way valve and a membrane humidification component;
the first heater is positioned between the second three-way valve and the third three-way valve;
and the third three-way valve is respectively communicated with the ejector and the membrane humidifying component.
From the above description, the temperature and humidity control system can control the temperature and humidity of the gas in the return path.
Further, the membrane humidification component comprises a membrane humidifier, a first water divider, a fourth electric valve, a first drain valve, a throttle valve, a water pump, a fourth three-way valve, a second heater and a radiator, and the third three-way valve, the membrane humidifier, the first water divider, the fourth electric valve and the ejector are communicated in sequence;
the first drainage valve is connected to the first water divider;
the water pump is connected to the membrane humidifier and is connected back to the membrane humidifier through a throttle valve;
the second heater and the radiator are connected in parallel between the water pump and the throttle valve through a fourth three-way valve.
The control method of the fuel cell test system comprises the following steps
Starting a fuel cell testing system, selecting a testing mode according to whether gas components are simulated or not, and if so, entering a preset ejector performance open-loop humidification testing mode by the fuel cell testing system; if not, the fuel cell test system enters a preset ejector performance closed-loop test mode or a double-injection-path performance test.
Furthermore, whether the temperature and humidity control system is started or not is selected according to needs in the selection test mode.
Further, the performance test of the double injection paths comprises
The pile simulation cavity simulates the pile working condition, a second proportional valve/a second ejector of the main injection path is started, the difference value between the outlet pressure value of the ejector and the target pressure is detected,
if the difference value is out of the preset range, detecting whether the pile simulation cavity exceeds the protection pressure, if so, opening an exhaust valve to release pressure, and otherwise, adjusting the duty ratio of a second proportional valve/a second injector;
if the difference value is within the preset range, detecting whether the gas temperature and the humidity of the return flow path meet the requirements, if not, starting a temperature and humidity control system, if so, detecting whether the target flow for starting the bypass injection path is reached, otherwise, adjusting the duty ratio of a second proportional valve/a second ejector, if so, detecting whether a first proportional valve/a first ejector of the bypass injection path is opened, if so, returning to detect the difference value between the outlet pressure value of the ejector and the target pressure again, and if not, detecting whether the target flow for starting the bypass injection path is reached again.
According to the description, the fuel cell test system can simulate the operation environment of the galvanic pile and verify the working condition characteristics of the ejector under the conditions of gas consumption, gas exhaust, water drainage and the like during the operation of the galvanic pile; simulating oxygen circulating gas components of the galvanic pile, wherein the injection characteristic is closer to the real running condition of the galvanic pile; the open-loop test of the ejector can be carried out, and the accurate control of the ejection reflux flow resistance, the humidity and the temperature can be realized; the closed-loop test of the ejector can be carried out, and the system can debug and verify the control strategy of the ejector of the fuel cell engine; the performance test of a single proportional valve/ejector and an ejector can be carried out, and the performance test of a proportional valve/ejector and an ejector and a Bypass proportional valve/ejector can also be carried out; the full-working-condition Map test of the fuel cell engine ejector in the engine running process can be realized.
Example one
Referring to fig. 1, a fuel cell testing system includes
A gas supply system 31 for supplying gas to the fuel cell testing system;
the ejector 9 gas supply system outputs the gas supplied by the gas source system 31 through the ejector 9;
the consumption system simulates the operation of the galvanic pile and receives the gas output by the gas supply system of the ejector 9; and
and the temperature and humidity control system is used for sending the gas of the gas source system 31 and/or the gas exhausted by the consumption system into the gas supply system of the ejector 9 after temperature and humidity control treatment.
The gas source system 31 comprises a (high pressure) hydrogen source 311, a (high pressure) nitrogen source 312, a (high pressure) air source 313, a mixing chamber 1 and a buffer chamber 34, wherein the hydrogen source 311, the nitrogen source 312 and the air source 313 are respectively communicated with the mixing chamber 1 through a first electric valve 14, a second electric valve 15 and a third electric valve 16; the hydrogen source 311, the nitrogen source 312 and the air source 313 are respectively communicated with the buffer cavity 34 through a fourth proportional valve 314, a fifth proportional valve 315 and a sixth proportional valve 316; a sixth pressure sensor 32 and a hydrogen concentration/oxygen concentration sensor 33 are communicated with the buffer cavity 34;
the mixing cavity 1 is communicated with an air supply system of the ejector 9; the buffer chamber 34 and the consumption system are communicated with a temperature and humidity control system through a second three-way valve 37.
The air supply system of the ejector 9 comprises an ejector 9, a first three-way valve 10, a main ejector air supply system and an ejector 9 return port air supply system, wherein the main ejector air supply system comprises a first flowmeter 2, a second flowmeter 5, a first pressure sensor 3, a second pressure sensor 6, a third pressure sensor 8, a first proportional valve/first ejector 4, a second proportional valve/second ejector 7 and a third proportional valve/third ejector 35;
the mixing cavity 1, the second flowmeter 5, the second pressure sensor 6, the second proportional valve/second ejector 7, the third pressure sensor 8 and the ejector 9 are communicated in sequence to form a main injection path; the ejector 9 is communicated with a consumption system through a first three-way valve 10;
the mixing cavity 1, the first flowmeter 2, the first pressure sensor 3, the first proportional valve/first injector 4 and the first three-way valve 10 are communicated in sequence to form a bypass injection path;
the third proportional valve/third injector 35 is located between the buffer chamber 34 and the second three-way valve 37; a seventh pressure sensor 36 is arranged between the third proportional valve/third injector 35 and the second three-way valve 37.
The consumption system comprises a pile simulation cavity 25, a safety valve 26, an exhaust valve 27, a mass flow controller 28, a second water separator 29 and a drain valve, wherein the safety valve 26, the exhaust valve 27 and the second water separator 29 are respectively communicated with the pile simulation cavity 25, and the mass flow controller 28 and the second drain valve 30 are respectively communicated with the second water separator 29. The pile simulation cavity 25 is communicated with the first three-way valve 10, and a fourth pressure sensor 11, a first temperature sensor 12 and a first humidity sensor 13 are further arranged between the pile simulation cavity 25 and the first three-way valve 10;
the pile simulation cavity 25 is communicated with a second three-way valve 37 to form a return flow path; a flow resistance regulator 51 is also arranged between the pile simulation cavity 25 and the second three-way valve 37.
The temperature and humidity control system comprises a first heater 38, a third three-way valve 39 and a membrane humidifying component;
the first heater 38 is located between the second three-way valve 37 and the third three-way valve 39;
a fifth pressure sensor 18, a third temperature sensor 19, a second humidity sensor 20 and a third flow meter 21 are further arranged between the fourth electrically operated valve 22 and the temperature and humidity control system;
the third three-way valve 39 is respectively communicated with the ejector 9 and the membrane humidifying component. A second temperature sensor 17 is arranged between the third three-way valve 39 and the ejector 9.
The membrane humidification component comprises a membrane humidifier 43, a first water divider 23, a fourth electric valve 22, a first drain valve 24, a throttle valve 46, a water pump 47, a fourth three-way valve 48, a second heater 49 and a radiator 50, wherein the third three-way valve 39, the membrane humidifier 43, the first water divider 23, the fourth electric valve 22 and the ejector 9 are communicated in sequence;
an eighth pressure sensor 40, a fourth temperature sensor 41 and a third humidity sensor 42 are arranged between the membrane humidifier 43 and the third three-way valve 39;
the first drain valve 24 is connected to the first water divider 23;
the water pump 47 is connected to the membrane humidifier 43 and is connected back to the membrane humidifier 43 through a throttle valve 46, and a fifth temperature sensor 45 and a ninth pressure sensor 44 are sequentially arranged between the throttle valve 46 and the membrane humidifier 43;
the second heater 49 and the radiator 50 are connected in parallel between the water pump 47 and the throttle valve 46 by a fourth three-way valve 48.
Example two
Referring to fig. 2, a control method of a fuel cell testing system according to an embodiment includes an ejector performance open-loop non-humidification test mode.
EXAMPLE III
Referring to fig. 3, a control method of a fuel cell testing system according to an embodiment includes an ejector performance open-loop humidification test mode.
Example four
Referring to fig. 4, a control method of a fuel cell testing system according to an embodiment includes an ejector performance closed-loop humidification test mode.
EXAMPLE five
Referring to fig. 5 and 6, a control method of a fuel cell testing system according to an embodiment includes a dual injection path performance test mode (a test mode of performance of proportional valve/injector + ejector + Bypass proportional valve/injector "):
the dual injection path performance test comprises
The pile simulation cavity simulates the pile working condition, a second proportional valve/a second ejector of the main injection path is started, the difference value between the outlet pressure value of the ejector and the target pressure is detected,
if the difference value is out of the preset range, detecting whether the pile simulation cavity exceeds the protection pressure, if so, opening an exhaust valve to release pressure, and otherwise, adjusting the duty ratio of a second proportional valve/a second injector;
if the difference value is within the preset range, detecting whether the gas temperature and the humidity of the return flow path meet the requirements, if not, starting a temperature and humidity control system, if so, detecting whether the target flow for starting the bypass injection path is reached, otherwise, adjusting the duty ratio of a second proportional valve/a second ejector, if so, detecting whether a first proportional valve/a first ejector of the bypass injection path is opened, if so, returning to detect the difference value between the outlet pressure value of the ejector and the target pressure again, and if not, detecting whether the target flow for starting the bypass injection path is reached again.
The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention and the contents of the accompanying drawings, which are directly or indirectly applied to the related technical fields, are included in the scope of the present invention.
Claims (10)
1. A fuel cell test system is characterized by comprising
A gas source system for supplying gas to the fuel cell testing system;
the ejector gas supply system outputs the gas supplied by the gas source system through the ejector;
the consumption system simulates the operation of the galvanic pile and receives the gas output by the ejector gas supply system; and
and the temperature and humidity control system is used for sending the gas of the gas source system and/or the gas exhausted by the consumption system into the ejector gas supply system after temperature and humidity control treatment.
2. The fuel cell testing system of claim 1, wherein the air supply system comprises a hydrogen source, a nitrogen source, an air source, a mixing chamber, and a buffer chamber, wherein the hydrogen source, the nitrogen source, and the air source are respectively communicated with the mixing chamber through electric valves; the hydrogen source, the nitrogen source and the air source are respectively communicated with the buffer cavity through proportional valves;
the mixing cavity is communicated with an ejector gas supply system; and the buffer cavity and the consumption system are communicated with the temperature and humidity control system through a second three-way valve.
3. The fuel cell testing system of claim 2, wherein the eductor gas supply system comprises an eductor, a first three-way valve, a main eductor gas supply system, and an eductor return port gas supply system, the main eductor gas supply system comprising a first proportional valve/first eductor, a second proportional valve/second eductor, and a third proportional valve/third eductor;
the mixing cavity, the second proportional valve/second ejector and the ejector are communicated in sequence to form a main injection path; the ejector is communicated with the consumption system through a first three-way valve;
the mixing cavity first proportional valve/first ejector and the first three-way valve are communicated in sequence to form a bypass injection path;
the third proportional valve/third injector is located between the buffer chamber and the second three-way valve.
4. The fuel cell testing system of claim 3, wherein the consumption system comprises a stack simulation chamber, a safety valve, an exhaust valve, a mass flow controller, a second water separator and a drain valve, wherein the safety valve, the exhaust valve and the second water separator are respectively communicated with the stack simulation chamber, and the mass flow controller and the second drain valve are respectively communicated with the second water separator;
the pile simulation cavity is communicated with a first three-way valve.
5. The fuel cell testing system of claim 4, wherein the stack simulation chamber is in communication with a second three-way valve to form a return path; and a flow resistance regulator is also arranged between the pile simulation cavity and the second three-way valve.
Has the advantages that: the flow resistance of the return path can be adjusted by a flow resistance adjuster.
6. The fuel cell testing system of claim 3, wherein the temperature and humidity control system comprises a first heater, a third three-way valve, and a membrane humidification assembly;
the first heater is positioned between the second three-way valve and the third three-way valve;
and the third three-way valve is respectively communicated with the ejector and the membrane humidifying component.
7. The fuel cell testing system of claim 6, wherein the membrane humidification assembly comprises a membrane humidifier, a first water separator, a fourth electric valve, a first drain valve, a throttle valve, a water pump, a fourth three-way valve, a second heater and a radiator, and the third three-way valve, the membrane humidifier, the first water separator, the fourth electric valve and the ejector are sequentially communicated;
the first drainage valve is connected to the first water divider;
the water pump is connected to the membrane humidifier and is connected back to the membrane humidifier through a throttle valve;
and the second heater and the radiator are connected in parallel between the water pump and the throttle valve through a fourth three-way valve.
8. A method of controlling a fuel cell testing system according to any one of claims 1 to 7, comprising
Starting a fuel cell testing system, selecting a testing mode according to whether the gas components are simulated, and if so, entering a preset ejector performance open-loop humidification testing mode by the fuel cell testing system; if not, the fuel cell test system enters a preset ejector performance closed-loop test mode or a double-injection-path performance test.
9. The control method of the fuel cell test system according to claim 8, wherein whether to start the temperature and humidity control system is selected as required in the test mode.
10. The method of controlling a fuel cell testing system of claim 8, wherein the dual injection path performance test comprises
The pile simulation cavity simulates pile working conditions, a second proportional valve/a second ejector of the main injection path is started, and the difference value between the outlet pressure value of the ejector and the target pressure is detected;
if the difference value is out of the preset range, detecting whether the pile simulation cavity exceeds the protection pressure, if so, opening an exhaust valve to release pressure, and otherwise, adjusting the duty ratio of a second proportional valve/a second injector;
if the difference value is within a preset range, detecting whether the temperature and the humidity of the gas in the return flow path meet the requirements, if not, starting a temperature and humidity control system, if so, detecting whether the target flow for starting the bypass injection path is reached, otherwise, adjusting the duty ratio of the second proportional valve/the second ejector, if so, detecting whether the first proportional valve/the first ejector of the bypass injection path is opened, if so, returning to detect the difference value between the outlet pressure value of the ejector and the target pressure again, and if not, detecting whether the target flow for starting the bypass injection path is reached again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110943655.2A CN115706247A (en) | 2021-08-17 | 2021-08-17 | Fuel cell test system and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110943655.2A CN115706247A (en) | 2021-08-17 | 2021-08-17 | Fuel cell test system and control method |
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| CN115706247A true CN115706247A (en) | 2023-02-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352784A (en) * | 2023-12-06 | 2024-01-05 | 江西五十铃汽车有限公司 | System and method for testing hydrogen component of fuel cell for vehicle |
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2021
- 2021-08-17 CN CN202110943655.2A patent/CN115706247A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117352784A (en) * | 2023-12-06 | 2024-01-05 | 江西五十铃汽车有限公司 | System and method for testing hydrogen component of fuel cell for vehicle |
| CN117352784B (en) * | 2023-12-06 | 2024-04-09 | 江西五十铃汽车有限公司 | System and method for testing hydrogen component of fuel cell for vehicle |
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