CN217641427U - Testing arrangement suitable for fuel cell air compressor machine - Google Patents
Testing arrangement suitable for fuel cell air compressor machine Download PDFInfo
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- CN217641427U CN217641427U CN202123299170.9U CN202123299170U CN217641427U CN 217641427 U CN217641427 U CN 217641427U CN 202123299170 U CN202123299170 U CN 202123299170U CN 217641427 U CN217641427 U CN 217641427U
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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
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- 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
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Abstract
The utility model relates to a testing arrangement suitable for fuel cell air compressor machine, the device includes: the device comprises a filter, an air compressor, a heat exchanger, a radiator, an air flow meter, a back pressure regulating valve and a flow controller; the filter is connected with an inlet of the air compressor; the outlet of the air compressor is connected with the inlet of the heat exchanger; an outlet of the heat exchanger is connected with an air flow meter FM1; the outlet of the air flow meter FM1 is divided into two paths, one path is connected to the backpressure regulating valve, and the other path is connected to the flow controller; the heat exchanger exchanges heat through the radiator; the radiator is electrically connected with the computer controller through the radiator PWM speed regulator; the radiator controls the rotating speed of a radiating fan through a radiator PWM speed regulator so as to control the air inlet temperature; the utility model has the advantages that: through the test to the fuel cell air compressor machine, can effectively improve the empty filter of output of fuel cell pile, further better can control the fuel cell engine.
Description
Technical Field
The utility model relates to an air compressor machine test field especially relates to a testing arrangement suitable for fuel cell air compressor machine.
Background
Fuel cells generate electrical energy by electrochemically reacting hydrogen gas at the anode and oxygen gas (air) at the cathode across a membrane. The most main core part of the fuel cell automobile is a fuel cell engine, and when the fuel cell engine works, an air compressor is required to provide air with proper flow and pressure to perform chemical reaction with hydrogen in the fuel cell to generate electric energy which is supplied to an automobile motor to drive the automobile to run.
The efficiency of the fuel cell engine is a key parameter, and how the engine device effectively improves the output power of the electric pile by controlling the pressure, the temperature and the flow of the reaction gas is the key point of the control of the fuel cell engine. The flow, pressure and temperature of the air output by the air compressor directly influence the output performance of the fuel cell stack. The power consumption of the air compressor itself seriously affects the overall efficiency of the engine. Therefore, the test of the fuel cell air compressor is very important, and the test has great significance in both the research and development of the fuel cell engine and the fuel cell air compressor.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a pair of testing arrangement suitable for fuel cell air compressor machine, the device includes:
the system comprises a filter, an air compressor, a heat exchanger, a radiator, an air flow meter, a back pressure regulating valve and a flow controller;
the filter is connected with an inlet of the air compressor;
the outlet of the air compressor is connected with the inlet of the heat exchanger;
an outlet of the heat exchanger is connected with an air flow meter FM1;
the outlet of the air flow meter FM1 is divided into two paths, one path is connected to the backpressure regulating valve, and the other path is connected to the flow controller; the back pressure regulating valve is used for controlling the pressure of the outlet of the air compressor; the flow controller is used for simulating the actual oxygen consumption of the galvanic pile;
the heat exchanger exchanges heat through the radiator;
the radiator is electrically connected with the computer controller through a radiator PWM speed regulator;
the radiator controls the rotating speed of a radiating fan through a radiator PWM speed regulator, and further controls the air inlet temperature.
Further, a first temperature sensor and a first pressure sensor are arranged between the inlet of the air compressor and the filter; the first temperature sensor acquires the actual temperature T1 of the fresh air; the first pressure sensor collects the pressure P1 of the inlet air.
Further, a second temperature sensor and a second pressure sensor are arranged between the air flow meter FM1 and the back pressure regulating valve; the second temperature sensor is used for monitoring the actual temperature T2 of the air entering the reactor; the second pressure sensor is used for monitoring the actual pressure P2 of the outlet of the air compressor.
Furthermore, the air compressor is electrically connected with the computer controller sequentially through the voltage and current detection unit and the air compressor controller;
the air compressor controls the rotating speed of the air compressor through an air compressor controller, monitors the real-time current and voltage of the air compressor through a voltage and current detection unit, and calculates the real-time power P of the air compressor.
Furthermore, the first temperature sensor, the first pressure sensor, the second temperature sensor, the second pressure sensor, the back pressure regulating valve and the flow controller are all electrically connected with the computer controller.
The working principle of the device comprises the following processes: inputting the simulated working conditions of the fuel cell stack into a computer controller to obtain the set flow, pressure and temperature of air under each working condition and the actual consumption of the fuel cell, and controlling the flow, pressure and temperature of the air compressor to reach the flow, pressure and temperature under the working conditions, and simulating the actual consumption of oxygen through a flow controller;
the testing process comprises a testing process of matching the fuel cell stack and a testing process of flow, pressure ratio and rotating speed MAP graph.
Further, the matching fuel cell stack testing process specifically includes:
s101: introducing the simulated working conditions of the fuel cell stack into a computer controller, wherein the simulated working conditions comprise N different working condition points; each operating point comprises the power P of the electric pile under the operating condition a Required flow rate F b Air pressure in pile P c And the flow rate of oxygen consumed F d ；
S102: opening the testing device, confirming that the water quantity of the cooling water is normal, and entering a first working condition point for testing;
s103: recording the test starting time, and judging whether the first working condition point reaches a steady state; the steady state specifically refers to: each index under the working condition point is kept stable within a certain time;
s104: if the steady state is reached, recording the data of the current working condition point, and entering the step S105; the current operating point data includes: current, voltage and power P of air compressor e The method comprises the following steps of (1) rotating speed, actual temperature T1 of new air, pressure P1 of inlet air, actual temperature T2 of air entering a pile, actual pressure P2 of an outlet of an air compressor, flow of an air flow meter, flow of a flow controller, time for reaching a steady state, opening of a back pressure regulating valve and power of a radiator fan; if the steady state is not reached, the test is ended;
s105: calculating the pressure rise and the maximum possible efficiency of the air compressor under the current working condition; wherein the pressure rise = P2/P1, maximum possible efficiency = (P) a -P e )/P a ；
S106: judging whether the air compressor meets the current working condition requirement of the electric pile or not through pressure rise, the maximum possible efficiency, the rotating speed of the air compressor and the flow of the air flow meter; wherein, the judgment rule is specifically as follows: each parameter reaches the expected value of the current working condition;
s107: and if the current working condition requirement is met, completing the current working condition test, ending the current test or entering the next working condition point test until the N working condition points are tested.
The flow, pressure ratio and rotating speed MAP graph test process specifically comprises the following steps:
s201: uniformly selecting M rotating speed working points in the rotating speed range of the air compressor; m is greater than or equal to 20;
s202: entering a first working condition point to start testing;
s203: adjusting the rotating speed of the air compressor to the rotating speed of a first working condition point through a computer controller;
s204: adjusting the opening of the back pressure adjusting valve from 100% -10%, reducing the opening by 5% each time, enabling each point to stabilize the air compressor, gradually reducing the air flow in the adjusting process of the back pressure adjusting valve, stopping adjusting the back pressure adjusting valve when the flow is not reduced after the back pressure adjusting valve is adjusted or the air compressor knocks, and recording data of each stable point at the moment; the data for the steady state point includes: the method comprises the following steps of (1) rotating speed of an air compressor, flow of an air compressor flowmeter, pressure P1 of inlet air, actual temperature T2 of air entering a reactor and actual pressure P2 of an air compressor outlet;
s205: after the test of the current rotating speed working condition point is finished, the next rotating speed working condition point test is carried out until all the M rotating speed working condition points are tested;
s206: and drawing a MAP curve chart of the flow rate, the rotation speed and the pressure ratio according to the recorded rotating speed, the flow rate and the pressure ratio = P2/P1 of the air compressor.
The utility model provides a beneficial effect is: through the test to the fuel cell air compressor machine, can effectively improve the empty filter of output of fuel cell pile, further better can control the fuel cell engine.
Drawings
FIG. 1 is a view of the structure of the device of the present invention;
fig. 2 is a flowchart of the overall operation principle of the testing device for the fuel cell air compressor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described below with reference to the accompanying drawings.
The utility model provides a testing device suitable for a fuel cell air compressor, please refer to fig. 1, fig. 1 is a structure diagram of the device of the utility model; the device comprises:
the system comprises a filter, an air compressor, a heat exchanger, a radiator, an air flow meter, a back pressure regulating valve and a flow controller;
the filter is connected with an inlet of the air compressor;
the outlet of the air compressor is connected with the inlet of the heat exchanger;
an outlet of the heat exchanger is connected with an air flow meter FM1;
the outlet of the air flow meter FM1 is divided into two paths, one path is connected to the backpressure regulating valve, and the other path is connected to the flow controller; the back pressure regulating valve is used for controlling the pressure of the outlet of the air compressor; the flow controller is used for simulating the actual oxygen consumption of the galvanic pile;
the heat exchanger exchanges heat through the radiator;
the radiator is electrically connected with the computer controller through a radiator PWM speed regulator;
the radiator controls the rotating speed of a radiating fan through a radiator PWM speed regulator, and further controls the air inlet temperature.
A first temperature sensor and a first pressure sensor are also arranged between the inlet of the air compressor and the filter; the first temperature sensor acquires the actual temperature T1 of the fresh air; the first pressure sensor collects the pressure P1 of the inlet air.
A second temperature sensor and a second pressure sensor are arranged between the air flow meter FM1 and the back pressure regulating valve; the second temperature sensor is used for monitoring the actual temperature T2 of the air entering the reactor; the second pressure sensor is used for monitoring the actual pressure P2 of the outlet of the air compressor.
The air compressor is also electrically connected with the computer controller through the voltage and current detection unit and the air compressor controller in sequence;
the air compressor controls the rotating speed of the air compressor through an air compressor controller, monitors the real-time current and voltage of the air compressor through a voltage and current detection unit, and calculates the real-time power P of the air compressor.
The first temperature sensor, the first pressure sensor, the second temperature sensor, the second pressure sensor, the back pressure regulating valve and the flow controller are all electrically connected with the computer controller.
The opening of the back pressure regulating valve is controlled by collecting the outlet pressure of the air compressor and a predefined algorithm, so that the outlet pressure of the air compressor is controlled.
The rotating speed of the cooling fan is controlled through collecting the temperature behind the flow meter and a predefined algorithm, and then the temperature of air entering the reactor is controlled.
As one example, the predefined algorithm described above may include a conventional control algorithm such as a PID algorithm.
The utility model provides a testing arrangement suitable for fuel cell air compressor machine, theory of operation includes the following process:
inputting the simulated working conditions of the fuel cell stack into a computer controller to obtain the set flow, pressure and temperature of air under each working condition and the actual consumption of the fuel cell, controlling the flow of an air compressor according to the set flow, pressure and temperature and simulating the actual consumption of oxygen through a flow controller, wherein the pressure and temperature reach the flow, pressure and temperature under the working conditions;
the test process comprises a matching fuel cell stack test process and a flow, pressure ratio and rotating speed MAP graph test process.
Referring to fig. 2, fig. 2 is a flowchart illustrating an overall operation principle of the testing apparatus for a fuel cell air compressor.
The matched fuel cell stack testing process specifically comprises the following steps:
s101: introducing the simulated working conditions of the fuel cell stack into a computer controller, wherein the simulated working conditions comprise N different working condition points; each operating point comprises the power P of the electric pile under the operating condition a Required flow rate F b Air pressure in pile P c And the flow rate of oxygen consumed F d ；
S102: opening the testing device, confirming that the water quantity of the cooling water is normal, and entering a first working condition point for testing;
s103: recording the test starting time, and judging whether the first working condition point reaches a steady state; the steady state specifically refers to: each index under the working condition point is kept stable within a certain time;
s104: if the steady state is reached, recording the data of the current working condition point, and entering the step S105; the current operating point data includes: current, voltage and power P of air compressor e The method comprises the following steps of (1) rotating speed, actual temperature T1 of new air, pressure P1 of inlet air, actual temperature T2 of air entering a pile, actual pressure P2 of an outlet of an air compressor, flow of an air flow meter, flow of a flow controller, time for reaching a steady state, opening of a back pressure regulating valve and power of a radiator fan; if the steady state is not reached, the test is ended;
s105: calculating the pressure rise and the maximum possible efficiency of the air compressor under the current working condition; wherein the pressure rise = P2/P1, maximum possible efficiency = (P) a -P e )/P a ；
S106: judging whether the air compressor meets the current working condition requirement of the electric pile or not through pressure rise, the maximum possible efficiency, the rotating speed of the air compressor and the flow of the air flow meter; wherein, the judgment rule is specifically as follows: each parameter reaches the expected value of the current working condition;
s107: and if the current working condition requirement is met, completing the current working condition test, ending the current test or entering the next working condition point test until the N working condition points are tested.
The flow, pressure ratio and rotating speed MAP graph test process specifically comprises the following steps:
s201: uniformly selecting M rotating speed working points in the rotating speed range of the air compressor; m is greater than or equal to 20;
s202: entering a first working condition point to start testing;
s203: adjusting the rotating speed of the air compressor to the rotating speed of a first working condition point through a computer controller;
s204: adjusting the opening degree of a back pressure adjusting valve from 100-10%, wherein the opening degree is reduced by 5% every time, each point enables the air compressor to be stable, the air flow is gradually reduced in the adjusting process of the back pressure adjusting valve, when the back pressure adjusting valve is adjusted, the flow is not reduced any more, or the air compressor knocks, the back pressure adjusting valve is stopped to be adjusted, and at the moment, data of each stable point are recorded; the data for the steady state point includes: the method comprises the following steps of (1) rotating speed of an air compressor, flow of an air compressor flowmeter, pressure P1 of inlet air, actual temperature T2 of air entering a reactor and actual pressure P2 of an air compressor outlet;
s205: after the test of the current rotating speed working condition point is finished, testing the next rotating speed working condition point until all the M rotating speed working condition points are tested;
s206: and drawing a MAP curve chart of the flow rate, the rotation speed and the pressure ratio according to the recorded rotating speed, the flow rate and the pressure ratio = P2/P1 of the air compressor.
To sum up, the beneficial effects of the utility model are that: through the test to the fuel cell air compressor machine, can effectively improve the empty filter of output of fuel cell pile, further better can control the fuel cell engine.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. The utility model provides a testing arrangement suitable for fuel cell air compressor machine which characterized in that: the method comprises the following steps: the device comprises a filter, an air compressor, a heat exchanger, a radiator, an air flow meter, a back pressure regulating valve and a flow controller;
the filter is connected with an inlet of the air compressor;
the outlet of the air compressor is connected with the inlet of the heat exchanger;
an outlet of the heat exchanger is connected with an air flow meter FM1;
the outlet of the air flow meter FM1 is divided into two paths, one path is connected to the backpressure regulating valve, and the other path is connected to the flow controller; the back pressure regulating valve is used for controlling the pressure of the outlet of the air compressor; the flow controller is used for simulating the actual oxygen consumption of the galvanic pile;
the heat exchanger exchanges heat through the radiator;
the radiator is electrically connected with the computer controller through the radiator PWM speed regulator;
the radiator controls the rotating speed of the radiating fan through the radiator PWM speed regulator, and further controls the temperature of air entering the reactor.
2. The testing device suitable for the fuel cell air compressor as claimed in claim 1, wherein: a first temperature sensor and a first pressure sensor are also arranged between the inlet of the air compressor and the filter; the first temperature sensor acquires the actual temperature T1 of the fresh air; the first pressure sensor collects the pressure P1 of the inlet air.
3. The testing device suitable for the fuel cell air compressor as claimed in claim 2, wherein: a second temperature sensor and a second pressure sensor are arranged between the air flow meter FM1 and the back pressure regulating valve; the second temperature sensor is used for monitoring the actual temperature T2 of the air entering the reactor; the second pressure sensor is used for monitoring the actual pressure P2 of the outlet of the air compressor.
4. The testing device suitable for the fuel cell air compressor as claimed in claim 1, wherein: the air compressor is also electrically connected with the computer controller through the voltage and current detection unit and the air compressor controller in sequence;
the air compressor controls the rotating speed of the air compressor through an air compressor controller, monitors the real-time current and voltage of the air compressor through a voltage and current detection unit, and calculates the real-time power P of the air compressor.
5. The testing device suitable for the fuel cell air compressor as claimed in claim 3, wherein: the first temperature sensor, the first pressure sensor, the second temperature sensor, the second pressure sensor, the back pressure regulating valve and the flow controller are all electrically connected with the computer controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123299170.9U CN217641427U (en) | 2021-12-24 | 2021-12-24 | Testing arrangement suitable for fuel cell air compressor machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123299170.9U CN217641427U (en) | 2021-12-24 | 2021-12-24 | Testing arrangement suitable for fuel cell air compressor machine |
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| Publication Number | Publication Date |
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| CN217641427U true CN217641427U (en) | 2022-10-21 |
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| CN202123299170.9U Active CN217641427U (en) | 2021-12-24 | 2021-12-24 | Testing arrangement suitable for fuel cell air compressor machine |
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2021
- 2021-12-24 CN CN202123299170.9U patent/CN217641427U/en active Active
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