CN116525890A - Off-line calibration device and off-line calibration method for hydrogen circulation system for fuel cell - Google Patents
Off-line calibration device and off-line calibration method for hydrogen circulation system for fuel cell Download PDFInfo
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 380
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 380
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 336
- 239000000446 fuel Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 55
- 230000008569 process Effects 0.000 claims abstract description 18
- 150000002431 hydrogen Chemical class 0.000 claims description 48
- 238000004590 computer program Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 13
- 230000001276 controlling effect Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 239000001307 helium Substances 0.000 claims description 7
- 229910052734 helium Inorganic materials 0.000 claims description 7
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000012356 Product development Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012360 testing method 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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
- H01M8/04097—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with recycling of the reactants
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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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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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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- 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
- H01M8/04388—Pressure; Ambient pressure; Flow of anode reactants at the inlet or inside the fuel cell
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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
- H01M8/04425—Pressure; Ambient pressure; Flow at auxiliary devices, e.g. reformers, compressors, burners
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- 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
- H01M8/04858—Electric variables
- H01M8/04925—Power, energy, capacity or load
- H01M8/04947—Power, energy, capacity or load of auxiliary devices, e.g. batteries, capacitors
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- 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
- H01M8/04992—Processes for controlling fuel cells or fuel cell systems characterised by the implementation of mathematical or computational algorithms, e.g. feedback control loops, fuzzy logic, neural networks or artificial intelligence
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- 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
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Abstract
The embodiment of the application provides an off-line calibration device and an off-line calibration method for a hydrogen circulation system for a fuel cell, comprising the following steps: the hydrogen flow rate measuring device comprises a hydrogen circulation system of the fuel cell to be calibrated, a hydrogen flow rate consumption device, a pressure sensor, a first flowmeter and a controller; the first flowmeter is used for measuring the hydrogen output quantity of the hydrogen circulation system of the fuel cell to be calibrated, and the pressure sensor is used for measuring the inlet pressure of the hydrogen circulation pump of the hydrogen circulation system of the fuel cell to be calibrated; the hydrogen flow consumption device is used for simulating the hydrogen consumption; the controller calculates the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure corresponding to each discrete current value according to the pile parameters of the battery; in the calibration process, obtaining parameter calibration values of the hydrogen circulation system under each discrete current value; the off-line map can be calibrated rapidly and accurately, and the calibration efficiency is improved effectively; is suitable for the technical field of fuel cells.
Description
Technical Field
The application relates to the technical field of fuel cells, in particular to an off-line calibration device and an off-line calibration method for a hydrogen circulation system for a fuel cell.
Background
A hydrogen system for a fuel cell power generation system, which requires sufficient hydrogen for continuous operation, generally includes: a hydrogen supply section and a hydrogen circulation section; the hydrogen supply part is responsible for hydrogen storage and continuously providing pure hydrogen with certain pressure and flow to the galvanic pile, so as to ensure that continuous direct current is generated by the reaction with oxygen of the cathode; the hydrogen circulation part comprises an electromagnetic proportional valve, a hydrogen circulation pump, a hydrogen discharge valve, a circulation pipeline loop and the like; the electromagnetic proportional valve is used for controlling the pressure at the hydrogen inlet of the fuel cell stack; the circulating pipeline loop has the function of recycling the excessive hydrogen which is not fully reacted in the fuel cell stack, and the excessive hydrogen is used for ensuring the electrochemical reaction in the stack to be fully carried out and preventing the explosion caused by the air infiltration into the anode; secondly, the balance of water in the pile is kept. The hydrogen circulation part discharges part of hydrogen which does not participate in the reaction and generated water to the electric pile to return to the hydrogen channel under the action of the hydrogen circulation pump, thereby saving energy and reducing emission; in addition, the hydrogen discharge valve arranged at the outlet of the electric pile can be opened when the tail gas is required to be discharged according to a control strategy, and the rest tail gas can be discharged into the atmosphere.
In order to ensure that the fuel cell can quickly and stably respond to the load power demand under the variable working condition, an initial value is generally obtained in a numerical map mode, and is automatically controlled by combining PID regulation, so that the accurate off-line calibration map is provided before the on-line test of the fuel cell power generation system, the on-line calibration risk can be greatly reduced, and the calibration time can be shortened.
Referring to the hydrogen circulation system of the fuel cell in the prior art shown in fig. 1, in the prior art, online calibration is directly performed mainly by calculating theoretical data of hydrogen supply amount in the hydrogen circulation system and combining with a PID regulation method; when the method is executed, the equipment is connected to an adjustable load, the upper limit opening of the electromagnetic proportional valve, the rotating speed of the hydrogen circulating pump and the opening interval and the time length of the hydrogen discharging valve are adjusted under the condition of the specified load output value until the pressure difference between the cathode, the anode and the cooling liquid required by the galvanic pile and the working voltage difference between the monomers meet the requirements, and the next working condition point calibration is carried out after the relevant data are recorded.
As can be seen from the above, in the prior art, calibration of the hydrogen circulation system is mainly completed in an online manner, in actual operation, because there is no basic reference value, a technician needs to adjust parameters such as the upper limit opening of the electromagnetic proportional valve, the rotation speed of the hydrogen circulation pump, the opening interval and the duration of the hydrogen discharge valve, and the like, and detect that the pressure difference among the cathode, the anode and the cooling water is not out of standard, so that the operation difficulty is high, when unstable fluctuation occurs and a certain index exceeds a normal range, if the system has a protection mechanism, the system is stopped, the calibration workload is greatly increased, and if the protection mechanism is not provided, the risk of damage exists, the execution is difficult and the risk is high; the method is extremely easy to have the conditions that the whole calibration map is unsmooth and the overall efficiency is low due to the fact that the value of the next working point is huge in difference although the calibration value meets the requirement of the working point, and the working performance of the fuel cell system is affected seriously.
Therefore, the off-line calibration device and the off-line calibration method for the hydrogen circulation system for the fuel cell can realize the rapid and accurate calibration of the off-line map, thereby reducing the time waste caused by repeated adjustment of the calibration parameters in the product development process and the energy loss and the fault risk caused by the time waste.
Disclosure of Invention
The embodiment of the application provides the off-line calibration device and the off-line calibration method for the hydrogen circulation system for the fuel cell, which can realize the rapid and accurate calibration of off-line map and effectively improve the calibration efficiency.
In order to achieve the above purpose, the present application provides the following technical solutions:
according to a first aspect of embodiments of the present application, there is provided an off-line calibration device for a hydrogen circulation system for a fuel cell, including: the hydrogen flow rate measuring device comprises a hydrogen circulation system of the fuel cell to be calibrated, a hydrogen flow rate consumption device, a pressure sensor, a first flowmeter and a controller; the first flowmeter, the pressure sensor and the hydrogen flow consumption device are sequentially arranged on an output pipeline of a hydrogen circulation system of the fuel cell to be calibrated; the first flowmeter is used for measuring the hydrogen output quantity of the hydrogen circulation system of the fuel cell to be calibrated, and the pressure sensor is used for measuring the inlet pressure of the hydrogen circulation pump of the hydrogen circulation system of the fuel cell to be calibrated; the hydrogen flow consumption device is used for simulating the hydrogen consumption; the controller is used for calculating the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value corresponding to each discrete current value according to the pile parameters of the battery; and according to the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value under each discrete current value, the parameter calibration value of the hydrogen circulation system under each discrete current value is obtained by adjusting the control component of the hydrogen circulation system and the control component of the hydrogen flow consumption device under the conditions that the hydrogen output demand is consistent with the hydrogen output quantity, the hydrogen consumption demand is consistent with the hydrogen output quantity and the measured value of the pressure sensor is consistent with the anode inlet pressure value.
Preferably, the off-line calibration device further comprises: the tail row sensor is arranged at the tail end of the output pipeline, and the output end of the tail row sensor is connected with the input end of the controller.
Preferably, the hydrogen circulation system includes: the hydrogen gas recycling system comprises a gas source, an electromagnetic valve, an electromagnetic proportional valve, a hydrogen gas circulating pump, a hydrogen discharging electromagnetic valve and a hydrogen gas circulating pump controller; the electromagnetic valve, the electromagnetic proportional valve, the first flowmeter, the pressure sensor, the three-way valve and the hydrogen discharge electromagnetic valve are sequentially arranged on an output pipeline of the air source; a first circulating branch pipe is connected to a pipeline between a first output port of the three-way valve and the hydrogen discharge electromagnetic valve, and a second circulating branch pipe is connected to a pipeline between the first flowmeter and the pressure sensor; the first circulating branch pipe is connected with an air inlet of the hydrogen circulating pump, and the first circulating branch pipe is connected with an air outlet of the hydrogen circulating pump; the second output port of the three-way valve is connected with a hydrogen discharge pipeline, and a back pressure valve and a second flowmeter are sequentially arranged on the hydrogen discharge pipeline; the signal output end of the first flowmeter, the signal output end of the pressure sensor, the signal output end of the tail sensor and the signal output end of the second flowmeter are respectively connected with the input end of the controller; the output end of the controller is connected with the control end of the electromagnetic valve, the control end of the electromagnetic proportional valve, the control end of the hydrogen discharge electromagnetic valve, the control end of the back pressure valve and the control end of the hydrogen circulating pump controller, and the output end of the hydrogen circulating pump controller is connected with the hydrogen circulating pump.
Preferably, in the off-line calibration process, the gas output by the gas source is helium.
According to a second aspect of the embodiments of the present application, there is provided an off-line calibration method of a hydrogen circulation system for a fuel cell, including the steps of:
step S10, a first flowmeter measures the hydrogen output of a hydrogen circulation system of a fuel cell to be calibrated; the pressure sensor measures the inlet pressure of a hydrogen circulating pump of a hydrogen circulating system of the fuel cell to be calibrated; the hydrogen flow consumption device simulates the hydrogen consumption;
step S20, transmitting the hydrogen output quantity, the inlet pressure of the hydrogen circulating pump and the hydrogen consumption quantity to a controller;
step S30, the controller calculates the hydrogen output demand, the hydrogen consumption demand and the hydrogen residual quantity corresponding to each discrete current value according to the pile parameters of the battery;
and according to the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value under each discrete current value, the parameter calibration value of the hydrogen circulation system under each discrete current value is obtained by adjusting the control component of the hydrogen circulation system and the control component of the hydrogen flow consumption device under the conditions that the hydrogen output demand is consistent with the hydrogen output quantity, the hydrogen consumption demand is consistent with the hydrogen output quantity and the measured value of the pressure sensor is consistent with the anode inlet pressure value.
Preferably, the step S30 includes:
step S301, calculating hydrogen output demand Q corresponding to each discrete current value according to the stack parameters of the battery i Hydrogen consumption demand Q c And the residual quantity of hydrogen Q s ；
Step S302, under a specified discrete current value, setting an opening interval and an opening duration of a hydrogen discharge electromagnetic valve, and controlling the opening degree of an electromagnetic proportional valve according to a measured value of a first flow meter of a hydrogen circulation system to obtain a specified hydrogen output quantity;
controlling the opening degree of the back pressure valve according to the measured value of the second flowmeter of the hydrogen flow consumption device so as to obtain the designated hydrogen consumption;
and according to the measured value of the pressure sensor of the hydrogen circulation system, the rotating speed of the hydrogen circulation pump and the opening degree of the electromagnetic proportional valve are regulated to obtain the pressure at the appointed anode inlet, and the corresponding rotating speed n of the hydrogen circulation pump is recorded when the pressure at the appointed anode inlet is recorded i And the opening k of the electromagnetic proportional valve i ；
Step S303, rotating the hydrogen circulating pump at the speed n i And the opening k of the electromagnetic proportional valve i As an initial value, respectively adjusting the opening interval and the opening duration of the hydrogen discharge solenoid valve to obtain a lower limit value of the opening interval of the hydrogen discharge solenoid valve and an upper limit value of the opening duration of the hydrogen discharge solenoid valve;
and (3) circularly executing the steps S302 to S303 to finish the working condition calibration under all discrete current values.
Preferably, the step S302 includes:
step S3021, setting the hydrogen discharge solenoid valve opening interval to bex i (s) the on-time is set to y i (s)；
Step S3022, slowly adjusting the opening of the electromagnetic proportional valve according to the measured value of the first flowmeter to make the measured value F of the first flowmeter a And hydrogen flow demand Q i The relationship of (He) is:
|F a ﹣Q i (He)|≤α i ；
step S3023, turning on the hydrogen flow consumption device, and adjusting the opening of the back pressure valve based on the measured value of the second flow meter to make the measured value F of the second flow meter b And hydrogen consumption demand Q c The relationship of (He) is:
|F b ﹣Q c (He)|≤β i ；
step S3024, closing the back pressure valve, and adjusting the rotation speed of the hydrogen circulation pump according to the measured value of the pressure sensor to enable the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is:
|p﹣p i |≤γ i ；
step S3025, based on the measured value F of the first flowmeter a And the measured value p of the pressure sensor is used for finely adjusting the opening of the electromagnetic proportional valve and the rotating speed of the hydrogen circulating pump, so that the electromagnetic proportional valve meets the following conditions:
|F a ﹣Q i (He)|≤α i and |p-p i |≤γ i ；
Recording the rotation speed n of the hydrogen circulating pump i And the opening k of the electromagnetic proportional valve i ；
Wherein x is i (s)、y i And(s) artificial experience parameters, wherein alpha, beta and gamma are error ranges allowed by a user in the calibration process.
Preferably, the step S303 includes:
step S3031, setting the upper limit opening of the electromagnetic proportional valve to k under the specified discrete current value i The rotating speed value of the hydrogen circulating pump is n i ；
Step S3032, the opening duration is set to y i Sequentially decreasing the opening interval by a specified step length when the measured value p of the pressure sensor and the anode inletPressure value p i The relation of (2) is: p-p i When the I is not less than delta i, recording that the opening interval at the moment is x i ；
Step S3033, keeping the opening interval at x i Sequentially increasing the opening time with a designated step length, when the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is: p-p i When the I is not less than delta i, recording the opening time y at the moment i ；
Wherein delta is the error range allowed by the user during calibration.
According to a third aspect of embodiments of the present application, there is provided an electronic device, including:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of the above.
According to a fourth aspect of embodiments of the present application, there is provided a computer-readable storage device, characterized in that a computer program is stored thereon; the computer program being executed by a processor to implement the method of any of the preceding claims.
The off-line calibration device and the off-line calibration method for the hydrogen circulation system for the fuel cell provided by the embodiment of the application have the following technical effects compared with the prior art:
1. in the application, the first flowmeter can measure the hydrogen output quantity of the hydrogen circulation system of the fuel cell to be calibrated, and the pressure sensor can measure the inlet pressure of the hydrogen circulation pump of the hydrogen circulation system of the fuel cell to be calibrated; the hydrogen flow consumption device can simulate the hydrogen consumption; the controller calculates the hydrogen output demand and the hydrogen consumption demand corresponding to each discrete current value according to the pile parameters of the battery; in the off-line calibration process:
the controller adjusts the control components (valves and pumps) of the hydrogen circulation system according to the hydrogen output demand and the hydrogen consumption demand under each discrete current value so that the hydrogen output quantity is consistent with the hydrogen output demand; the hydrogen consumption is consistent with the hydrogen consumption demand by adjusting a control component of the hydrogen flow consumption device; and according to the measured value of the pressure sensor, finely adjusting a control component (valve and pump) of the hydrogen circulation system to enable the measured value of the pressure sensor to be consistent with the pressure value of the anode inlet; and recording parameter calibration values of a control component of the hydrogen circulation system under the condition that the parameters are met, and completing off-line calibration of the hydrogen circulation system;
the off-line calibration method and the off-line calibration device can realize off-line calibration of the hydrogen circulation system for the fuel cell, compared with the on-line calibration of the prior art, the off-line map can be guaranteed to be calibrated rapidly and accurately within the full working condition range, the calibration efficiency is effectively improved, and the practicability is extremely strong.
2. In the method, the rotating speed of the hydrogen circulating pump and the opening degree of the electromagnetic proportional valve can be adjusted according to each discrete current value so as to meet the flow and pressure requirements, and a foundation is laid for on-line calibration and establishment of a final map with excellent performance.
3. According to the method and the device, the lower limit value of the opening interval of the hydrogen discharge electromagnetic valve and the upper limit value of the opening duration of the hydrogen discharge electromagnetic valve can be obtained according to the change condition of the pressure value at the anode inlet, an effective reference value is provided for the online calibration process, the workload of online calibration is reduced, and meanwhile, the safety of online calibration can be effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
FIG. 1 is a schematic diagram of a prior art hydrogen circulation system for a fuel cell;
FIG. 2 is a schematic circuit diagram of an off-line calibration device of a hydrogen circulation system for a fuel cell according to the present application;
FIG. 3 is a schematic structural diagram of an off-line calibration device of a hydrogen circulation system for a fuel cell provided by the present application;
FIG. 4 is a schematic flow chart of the method for off-line calibration of the hydrogen circulation system for fuel cells provided by the present application;
fig. 5 is a schematic flow chart of step S30 in the off-line calibration method of the hydrogen circulation system for a fuel cell provided in the present application;
the figures are marked as follows:
10 is a hydrogen circulation system, 20 is a hydrogen flow consumption device, 30 is a pressure sensor, 40 is a first flowmeter, 50 is a tail sensor, and 60 is a controller;
101 is an air source, 102 is an electromagnetic valve, 103 is an electromagnetic proportional valve, 104 is a hydrogen circulating pump, 105 is a hydrogen discharging electromagnetic valve, and 106 is a hydrogen circulating pump controller;
201 is a three-way valve, 202 is a back pressure valve, and 203 is a second flowmeter.
Detailed Description
The embodiment of the invention discloses an off-line calibration device and an off-line calibration method for a hydrogen circulation system of a fuel cell, which are used for solving the problem of low calibration efficiency of the existing hydrogen circulation system of the fuel cell.
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some of the embodiments of the present application and not exhaustive of all the embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Referring to fig. 2, in a specific embodiment, an off-line calibration device for a hydrogen circulation system for a fuel cell includes: a hydrogen circulation system 10 of the fuel cell to be calibrated, a hydrogen flow rate consuming device 20, a pressure sensor 30, a first flow meter 40 and a controller 60;
the first flowmeter 40, the pressure sensor 30, the hydrogen flow consumption device 20 are sequentially arranged on an output pipeline of the hydrogen circulation system 10 of the fuel cell to be calibrated;
the first flowmeter 40 is used for measuring the hydrogen output of the hydrogen circulation system 10 of the fuel cell to be calibrated, and the pressure sensor 30 is used for measuring the inlet pressure of the hydrogen circulation pump 104 of the hydrogen circulation system 10 of the fuel cell to be calibrated; the hydrogen flow consuming device 20 is used for simulating a hydrogen consuming device;
the controller 60 is configured to calculate a hydrogen output demand and a hydrogen consumption demand corresponding to each discrete current value according to the stack parameters of the battery;
and according to the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value under each discrete current value, the parameter calibration value of the hydrogen circulation system 10 under each discrete current value is obtained by adjusting the control component of the hydrogen circulation system 10 and the control component of the hydrogen flow consumption device 20 under the conditions that the hydrogen output demand is consistent with the hydrogen output quantity, the hydrogen consumption demand is consistent with the hydrogen output quantity and the measured value of the pressure sensor 30 is consistent with the anode inlet pressure value.
In this embodiment, the first flowmeter may measure the hydrogen output of the hydrogen circulation system of the fuel cell to be calibrated, and the pressure sensor may measure the inlet pressure of the hydrogen circulation pump of the hydrogen circulation system of the fuel cell to be calibrated; the hydrogen flow consumption device can simulate the hydrogen consumption; the controller calculates the hydrogen output demand and the hydrogen consumption demand corresponding to each discrete current value according to the pile parameters of the battery; in the off-line calibration process:
the controller adjusts the control components (valves and pumps) of the hydrogen circulation system according to the hydrogen output demand and the hydrogen consumption demand under each discrete current value so that the hydrogen output quantity is consistent with the hydrogen output demand; the hydrogen consumption is consistent with the hydrogen consumption demand by adjusting a control component of the hydrogen flow consumption device; and according to the measured value of the pressure sensor, finely adjusting a control component (valve and pump) of the hydrogen circulation system to enable the measured value of the pressure sensor to be consistent with the pressure value of the anode inlet; and recording parameter calibration values of a control component of the hydrogen circulation system under the condition that the parameters are met, and completing off-line calibration of the hydrogen circulation system;
the off-line calibration method and the off-line calibration device can realize off-line calibration of the hydrogen circulation system for the fuel cell, compared with the on-line calibration of the prior art, the off-line map can be guaranteed to be calibrated rapidly and accurately within the full working condition range, the calibration efficiency is effectively improved, and the practicability is extremely strong.
Referring to fig. 3, the off-line calibration device further includes: the tail sensor 50 is arranged at the tail end of the output pipeline, and the output end of the tail sensor 50 is connected with the input end of the controller 60.
Specifically, the hydrogen circulation system 10 includes: a gas source 101, a solenoid valve 102, an electromagnetic proportional valve 103, a hydrogen circulating pump 104, a hydrogen discharging solenoid valve 105 and a hydrogen circulating pump controller 106; the hydrogen flow rate consuming apparatus 20 includes: a three-way valve 201, a back pressure valve 202, and a second flowmeter 203; the electromagnetic valve 102, the electromagnetic proportional valve 103, the first flowmeter 40, the pressure sensor 30, the three-way valve 201 and the hydrogen discharge electromagnetic valve 105 are sequentially arranged on an output pipeline of the air source 101; a first circulation branch pipe is connected to a pipeline between the first output port of the three-way valve 201 and the hydrogen discharge electromagnetic valve 105, and a second circulation branch pipe is connected to a pipeline between the first flowmeter 40 and the pressure sensor 30; the first circulation branch pipe is connected with an air inlet of the hydrogen circulation pump 104, and the first circulation branch pipe is connected with an air outlet of the hydrogen circulation pump 104; a second output port of the three-way valve 201 is connected with a hydrogen discharge pipeline, and a back pressure valve 202 and a second flowmeter 203 are sequentially arranged on the hydrogen discharge pipeline; the signal output end of the first flowmeter 40, the signal output end of the pressure sensor 30, the signal output end of the tail sensor 50 and the signal output end of the second flowmeter 203 are respectively connected with the input end of the controller 60; the output end of the controller 60 is connected with the control end of the electromagnetic valve 102, the control end of the electromagnetic proportional valve 103, the control end of the hydrogen discharge electromagnetic valve 105, the control end of the back pressure valve 202 and the control end of the hydrogen circulating pump controller 106, and the output end of the hydrogen circulating pump controller 106 is connected with the hydrogen circulating pump 104.
In this embodiment, the air source 101, the electromagnetic valve 102, the electromagnetic proportional valve 103, the hydrogen circulation pump 104, the hydrogen discharge electromagnetic valve 105, and the like are all self-contained in the hydrogen circulation system 10 of the fuel cell to be calibrated, so that the obtained offline map can be ensured to have pertinence.
In this embodiment, the hydrogen flow rate consuming apparatus 20 includes: a three-way valve 201, a back pressure valve 202, and a second flowmeter 203; since the off-line process has no fuel cell consumption equipment, the hydrogen consumption process during power generation of the fuel cell system can be simulated by the hydrogen flow consumption device.
In this embodiment, the parameters of the hydrogen circulation system 10 include: the opening of the electromagnetic proportional valve 103 and the rotating speed of the hydrogen circulating pump 104 are used for off-line calibration:
controlling the opening of the electromagnetic proportional valve through the measured value of the first flowmeter to obtain a specified hydrogen output quantity; controlling the opening of the back pressure valve by the measured value of the second flowmeter to obtain a specified hydrogen consumption; on the basis of reaching the conditions, regulating the rotating speed of the hydrogen circulating pump and the opening of the electromagnetic proportional valve according to the measured value of the pressure sensor so as to obtain the pressure at the designated anode inlet; and recording the corresponding rotation speed n of the hydrogen circulating pump when the pressure at the inlet of the appointed anode i And the opening k of the electromagnetic proportional valve i The method comprises the steps of carrying out a first treatment on the surface of the Then, the rotation speed n of the hydrogen circulating pump is used i And the opening k of the electromagnetic proportional valve i As an initial value, respectively adjusting the opening interval and the opening duration of the hydrogen discharge solenoid valve to obtain a lower limit value of the opening interval of the hydrogen discharge solenoid valve and an upper limit value of the opening duration of the hydrogen discharge solenoid valve; and (5) working condition calibration under all discrete current values is completed.
Further, in the off-line calibration process, the gas output by the gas source 101 is helium; in this embodiment, to ensure the safety of the calibration process, helium gas with a relatively close molecular mass is used instead of hydrogen gas,
in addition, the application also provides an off-line calibration method of the hydrogen circulation system for the fuel cell.
Referring to fig. 4, the off-line calibration method of the hydrogen circulation system for the fuel cell includes the following steps:
step S10, a first flowmeter measures the hydrogen output of a hydrogen circulation system of a fuel cell to be calibrated; the pressure sensor measures the inlet pressure of a hydrogen circulating pump of a hydrogen circulating system of the fuel cell to be calibrated; the hydrogen flow consumption device simulates the hydrogen consumption;
step S20, transmitting the hydrogen output quantity, the inlet pressure of the hydrogen circulating pump and the hydrogen consumption quantity to a controller;
step S30, the controller calculates the hydrogen output demand, the hydrogen consumption demand and the hydrogen residual quantity corresponding to each discrete current value according to the pile parameters of the battery;
and according to the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value under each discrete current value, the parameter calibration value of the hydrogen circulation system under each discrete current value is obtained by adjusting the control component of the hydrogen circulation system and the control component of the hydrogen flow consumption device under the conditions that the hydrogen output demand is consistent with the hydrogen output quantity, the hydrogen consumption demand is consistent with the hydrogen output quantity and the measured value of the pressure sensor is consistent with the anode inlet pressure value.
In this embodiment, in step S30, the controller calculates the hydrogen output demand, the hydrogen consumption demand and the hydrogen remaining amount corresponding to each discrete current value according to the stack parameters of the battery; wherein:
the discrete current values may be discrete values given in a current-performance parameter table provided by a galvanic pile manufacturer, or a plurality of discrete current values containing maximum and minimum values are selected from a current-performance curve chart provided by the manufacturer, and the number is denoted as m.
And (3) calculating the hydrogen output demand corresponding to different discrete current values, wherein the calculation is shown in a formula (1):
wherein: w (W) H2 The unit is g/s for the required hydrogen mass flow; lambda (lambda) ca Is the excess hydrogen coefficient, provided by the manufacturer; n (N) fc The number of the single bodies in the galvanic pile is provided by a manufacturer; m is M H2 Is the molar mass of hydrogen; f is Faraday constant; i i Is a discrete current value;
in this embodiment, in order to ensure the safety of the calibration process, the gas used in the calibration process is helium (massThe relationship between the mass flow and the volume flow is: w=ρq; the conversion formula of the volume flow between the hydrogen and the helium is as follows:
when the temperature is calibrated at room temperature, the corresponding temperature correction coefficient is multipliedWherein T' is the air inlet temperature regulated by the fuel cell;
therefore, the helium mass flow value is calculated as shown in formula (2):
referring to fig. 5, specifically, the step S30 includes:
step S301, calculating hydrogen output demand Q corresponding to each discrete current value according to the stack parameters of the battery i Hydrogen consumption demand Q c And the residual quantity of hydrogen Q s ；
Step S302, under a specified discrete current value, setting an opening interval and an opening duration of a hydrogen discharge electromagnetic valve, and controlling the opening degree of an electromagnetic proportional valve according to a measured value of a first flow meter of a hydrogen circulation system to obtain a specified hydrogen output quantity;
controlling the opening degree of the back pressure valve according to the measured value of the second flowmeter of the hydrogen flow consumption device so as to obtain the designated hydrogen consumption;
and according to the measured value of the pressure sensor of the hydrogen circulation system, the rotating speed of the hydrogen circulation pump and the opening degree of the electromagnetic proportional valve are regulated to obtain the pressure at the appointed anode inlet, and the corresponding rotating speed n of the hydrogen circulation pump is recorded when the pressure at the appointed anode inlet is recorded i And the opening k of the electromagnetic proportional valve i ；
Step S303, rotating the hydrogen circulating pump at the speed n i And the opening k of the electromagnetic proportional valve i As initial values, the hydrogen discharge electromagnetism is respectively adjustedThe opening interval and the opening time length of the valve are obtained to obtain the lower limit value of the opening interval of the hydrogen discharging electromagnetic valve and the upper limit value of the opening time length of the hydrogen discharging electromagnetic valve;
and (3) circularly executing the steps S302 to S303 to finish the working condition calibration under all discrete current values.
Further, the step S302 includes:
step S3021, setting the hydrogen discharge solenoid valve opening interval to x i (s) the on-time is set to y i (s)；
Step S3022, slowly adjusting the opening of the electromagnetic proportional valve according to the measured value of the first flowmeter to make the measured value F of the first flowmeter a And hydrogen flow demand Q i The relationship of (He) is:
|F a ﹣Q i (He)|≤α i ；
step S3023, turning on the hydrogen flow consumption device, and adjusting the opening of the back pressure valve based on the measured value of the second flow meter to make the measured value F of the second flow meter b And hydrogen consumption demand Q c The relationship of (He) is:
|F b ﹣Q c (He)|≤β i ；
step S3024, closing the back pressure valve, and adjusting the rotation speed of the hydrogen circulation pump according to the measured value of the pressure sensor to enable the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is:
|p﹣p i |≤γ i ；
step S3025, based on the measured value F of the first flowmeter a And the measured value p of the pressure sensor is used for finely adjusting the opening of the electromagnetic proportional valve and the rotating speed of the hydrogen circulating pump, so that the electromagnetic proportional valve meets the following conditions:
|F a ﹣Q i (He)|≤α i and |p-p i |≤γ i ；
Recording the rotation speed n of the hydrogen circulating pump i And the opening k of the electromagnetic proportional valve i ；
Wherein x is i (s)、y i And(s) artificial experience parameters, wherein alpha, beta and gamma are error ranges allowed by a user in the calibration process.
In the above step S302, the parameter calibration values of the electromagnetic proportional valve upper limit opening degree and the hydrogen circulation pump rotation speed can be obtained at the specified discrete current value.
Further, the step S303 includes:
step S3031, setting the upper limit opening of the electromagnetic proportional valve to k under the specified discrete current value i The rotating speed value of the hydrogen circulating pump is n i ；
Step S3032, the opening duration is set to y i Sequentially decreasing the opening interval by a designated step length when the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is: p-p i When the I is not less than delta i, recording that the opening interval at the moment is x i ；
Step S3033, keeping the opening interval at x i Sequentially increasing the opening time with a designated step length, when the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is: p-p i When the I is not less than delta i, recording the opening time y at the moment i ；
Wherein delta is the error range allowed by the user during calibration.
In this embodiment, the designated step size is 1s.
Through the step S303, when the discrete current value is specified, the lower limit value of the opening interval of the hydrogen discharge solenoid valve and the upper limit value of the opening duration of the hydrogen discharge solenoid valve can be obtained, and the parameter calibration values of the opening interval of the hydrogen discharge solenoid valve and the opening duration of the hydrogen discharge solenoid valve are obtained.
In the application, the offline calibration method and the offline calibration device are based on the same inventive concept, and because the offline calibration method and the offline calibration device have similar principles for solving problems, implementation of the offline calibration method and the offline calibration device can be referred to each other, and repeated parts are not repeated.
The application also provides an electronic device, comprising:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method as described above.
The present application also provides a computer-readable storage medium having a computer program stored thereon; the computer program is executed by a processor to implement the method as described above.
In summary, the invention provides the off-line calibration device and the off-line calibration method for the hydrogen circulation system for the fuel cell, which can realize the rapid and accurate calibration of the off-line map, and the reference map obtained by the application can be directly written into the system control software to serve as the working condition framework of the fuel cell, so that the time for repeatedly adjusting the marking parameters in the product development process and the energy loss and the fault risk caused by the time are reduced, and the practicability is extremely strong.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (10)
1. The off-line calibration device of the hydrogen circulation system for the fuel cell is characterized by comprising the following components: a hydrogen circulation system (10) of the fuel cell to be calibrated, a hydrogen flow consumption device (20), a pressure sensor (30), a first flowmeter (40) and a controller (60);
the first flowmeter (40), the pressure sensor (30), the hydrogen flow consumption device (20) and the hydrogen circulation system (10) of the fuel cell to be calibrated are sequentially arranged on an output pipeline of the fuel cell to be calibrated;
the first flowmeter (40) is used for measuring the hydrogen output quantity of the hydrogen circulation system (10) of the fuel cell to be calibrated, and the pressure sensor (30) is used for measuring the inlet pressure of the hydrogen circulation pump (104) of the hydrogen circulation system (10) of the fuel cell to be calibrated; the hydrogen flow consumption device (20) is used for simulating the hydrogen consumption;
the controller (60) is used for calculating the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value corresponding to each discrete current value according to the pile parameters of the battery;
and according to the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value under each discrete current value, the parameter calibration value of the hydrogen circulation system (10) under each discrete current value is obtained by adjusting the control component of the hydrogen circulation system (10) and the control component of the hydrogen flow consumption device (20) under the conditions that the hydrogen output demand is consistent with the hydrogen output quantity, the hydrogen consumption demand is consistent with the hydrogen output quantity and the measured value of the pressure sensor (30) is consistent with the anode inlet pressure value.
2. The off-line calibration device for a hydrogen circulation system for a fuel cell according to claim 1, further comprising: and the tail row sensor (50) is arranged at the tail end of the output pipeline, and the output end of the tail row sensor (50) is connected with the input end of the controller (60).
3. The off-line calibration device of a hydrogen circulation system for a fuel cell according to claim 1, wherein the hydrogen circulation system (10) comprises: a gas source (101), an electromagnetic valve (102), an electromagnetic proportional valve (103), a hydrogen circulating pump (104), a hydrogen discharging electromagnetic valve (105) and a hydrogen circulating pump controller (106);
the electromagnetic valve (102), the electromagnetic proportional valve (103), the first flowmeter (40), the pressure sensor (30), the three-way valve (201) and the hydrogen discharge electromagnetic valve (105) are sequentially arranged on an output pipeline of the air source (101);
a first circulating branch pipe is connected to a pipeline between a first output port of the three-way valve (201) and the hydrogen discharge electromagnetic valve (105), and a second circulating branch pipe is connected to a pipeline between the first flowmeter (40) and the pressure sensor (30); the first circulating branch pipe is connected with an air inlet of the hydrogen circulating pump (104), and the first circulating branch pipe is connected with an air outlet of the hydrogen circulating pump (104);
the second output port of the three-way valve (201) is connected with a hydrogen discharge pipeline, and a back pressure valve (202) and a second flowmeter (203) are sequentially arranged on the hydrogen discharge pipeline;
the signal output end of the first flowmeter (40), the signal output end of the pressure sensor (30), the signal output end of the tail sensor (50) and the signal output end of the second flowmeter (203) are respectively connected with the input end of the controller (60);
the output end of the controller (60) is connected with the control end of the electromagnetic valve (102), the control end of the electromagnetic proportional valve (103), the control end of the hydrogen discharge electromagnetic valve (105), the control end of the back pressure valve (202) and the control end of the hydrogen circulating pump controller (106), and the output end of the hydrogen circulating pump controller (106) is connected with the hydrogen circulating pump (104).
4. An off-line calibration device for a hydrogen circulation system for a fuel cell according to claim 3, wherein in the off-line calibration process, the gas outputted from the gas source (101) is helium.
5. The off-line calibration method of the hydrogen circulation system for the fuel cell is characterized by comprising the following steps of:
step S10, a first flowmeter measures the hydrogen output of a hydrogen circulation system of a fuel cell to be calibrated; the pressure sensor measures the inlet pressure of a hydrogen circulating pump of a hydrogen circulating system of the fuel cell to be calibrated; the hydrogen flow consumption device simulates the hydrogen consumption;
step S20, transmitting the hydrogen output quantity, the inlet pressure of the hydrogen circulating pump and the hydrogen consumption quantity to a controller;
step S30, the controller calculates the hydrogen output demand, the hydrogen consumption demand and the hydrogen residual quantity corresponding to each discrete current value according to the pile parameters of the battery;
and according to the hydrogen output demand, the hydrogen consumption demand and the anode inlet pressure value under each discrete current value, the parameter calibration value of the hydrogen circulation system under each discrete current value is obtained by adjusting the control component of the hydrogen circulation system and the control component of the hydrogen flow consumption device under the conditions that the hydrogen output demand is consistent with the hydrogen output quantity, the hydrogen consumption demand is consistent with the hydrogen output quantity and the measured value of the pressure sensor is consistent with the anode inlet pressure value.
6. The method for off-line calibration of a hydrogen circulation system for a fuel cell according to claim 5, wherein the step S30 comprises:
step S301, calculating hydrogen output demand Q corresponding to each discrete current value according to the stack parameters of the battery i Hydrogen consumption demand Q c And the residual quantity of hydrogen Q s ；
Step S302, under a specified discrete current value, setting an opening interval and an opening duration of a hydrogen discharge electromagnetic valve, and controlling the opening degree of an electromagnetic proportional valve according to a measured value of a first flow meter of a hydrogen circulation system to obtain a specified hydrogen output quantity;
controlling the opening degree of the back pressure valve according to the measured value of the second flowmeter of the hydrogen flow consumption device so as to obtain the designated hydrogen consumption;
and according to the measured value of the pressure sensor of the hydrogen circulation system, the rotating speed of the hydrogen circulation pump and the opening degree of the electromagnetic proportional valve are regulated to obtain the pressure at the appointed anode inlet, and the corresponding rotating speed n of the hydrogen circulation pump is recorded when the pressure at the appointed anode inlet is recorded i And the opening k of the electromagnetic proportional valve i ；
Step S303, rotating the hydrogen circulating pump at the speed n i And the opening k of the electromagnetic proportional valve i As an initial value, respectively adjusting the opening interval and the opening duration of the hydrogen discharge solenoid valve to obtain a lower limit value of the opening interval of the hydrogen discharge solenoid valve and an upper limit value of the opening duration of the hydrogen discharge solenoid valve;
and (3) circularly executing the steps S302 to S303 to finish the working condition calibration under all discrete current values.
7. The method for off-line calibration of a hydrogen circulation system for a fuel cell according to claim 6, wherein the step S302 comprises:
step S3021, setting the hydrogen discharge solenoid valve opening interval to x i (s) the on-time is set to y i (s)；
Step S3022, slowly adjusting the opening of the electromagnetic proportional valve according to the measured value of the first flowmeter to make the measured value F of the first flowmeter a And hydrogen flow demand Q i The relationship of (He) is:
|F a ﹣Q i (He)|≤α i ；
step S3023, turning on the hydrogen flow consumption device, and adjusting the opening of the back pressure valve based on the measured value of the second flow meter to make the measured value F of the second flow meter b And hydrogen consumption demand Q c The relationship of (He) is:
|F b ﹣Q c (He)|≤β i ；
step S3024, closing the back pressure valve, and adjusting the rotation speed of the hydrogen circulation pump according to the measured value of the pressure sensor to enable the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is:
|p﹣p i |≤γ i ；
step S3025, based on the measured value F of the first flowmeter a And the measured value p of the pressure sensor is used for finely adjusting the opening of the electromagnetic proportional valve and the rotating speed of the hydrogen circulating pump, so that the electromagnetic proportional valve meets the following conditions:
|F a ﹣Q i (He)|≤α i and |p-p i |≤γ i ；
Recording the rotation speed n of the hydrogen circulating pump i And the opening k of the electromagnetic proportional valve i ；
Wherein x is i (s)、y i And(s) artificial experience parameters, wherein alpha, beta and gamma are error ranges allowed by a user in the calibration process.
8. The method for off-line calibration of a hydrogen circulation system for a fuel cell according to claim 6, wherein the step S303 comprises:
step S3031, at the specified discrete current valueSetting the upper limit opening degree of the electromagnetic proportional valve as k i The rotating speed value of the hydrogen circulating pump is n i ；
Step S3032, the opening duration is set to y i Sequentially decreasing the opening interval by a designated step length when the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is: p-p i When the I is not less than delta i, recording that the opening interval at the moment is x i ；
Step S3033, keeping the opening interval at x i Sequentially increasing the opening time with a designated step length, when the measured value p of the pressure sensor and the pressure value p at the anode inlet i The relation of (2) is: p-p i When the I is not less than delta i, recording the opening time y at the moment i ；
Wherein delta is the error range allowed by the user during calibration.
9. An electronic device, comprising:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 5 to 8.
10. A computer readable storage device having a computer program stored thereon; the computer program being executed by a processor to implement the method of any one of claims 5 to 8.
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| CN117117260A (en) * | 2023-10-23 | 2023-11-24 | 上海重塑能源科技有限公司 | Anode circulation amount control method and device, electronic equipment and fuel cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117117260A (en) * | 2023-10-23 | 2023-11-24 | 上海重塑能源科技有限公司 | Anode circulation amount control method and device, electronic equipment and fuel cell |
| CN117117260B (en) * | 2023-10-23 | 2024-02-13 | 上海重塑能源科技有限公司 | Anode circulation amount control method and device, electronic equipment and fuel cell |
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