CN110112438A - A kind of fuel cell spray rail decompression control method - Google Patents
A kind of fuel cell spray rail decompression control method Download PDFInfo
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- CN110112438A CN110112438A CN201910417887.7A CN201910417887A CN110112438A CN 110112438 A CN110112438 A CN 110112438A CN 201910417887 A CN201910417887 A CN 201910417887A CN 110112438 A CN110112438 A CN 110112438A
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- Prior art keywords
- fuel cell
- pressure
- spray rail
- duty cycle
- spray
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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
- H01M8/04104—Regulation of differential pressures
-
- 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
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The present invention provides a kind of fuel cell spray rail decompression control method, pressure control is carried out using decompression control system, the decompression control system includes bottle group depressurized system, multiple spray rail pressure reducers, injector, relief valve, pressure sensor, fuel cell pack, drop separator, drain valve and controller, specific control method is as follows: the real-time anode pressure of fuel cell pack is acquired by pressure sensor, the opening time and shut-in time sprayed in rail pressure reducer each duty cycle are calculated by controller according to target anode pressure, each spray rail pressure reducer is opened then according to opening time and duty cycle circulation, relief valve pressure release when fuel cell stack anode pressure is greater than secure threshold, hydrogen input fuel cell stack anode inlet after pressure controls realizes the control to fuel cell stack pressures.The present invention makes each nozzle be in good working condition, enhances the reliability of fuel cell by efficient scheduling strategy.
Description
Technical field
The present invention relates to Fuel Cell Control technical fields more particularly to a kind of fuel cell to spray rail decompression control method.
Background technique
Fuel cell is a kind of chemical devices for chemical energy possessed by fuel being directly changed into electric energy, also known as electrochemistry
Electric organ.It is the 4th kind of generation technology after hydroelectric generation, heat energy power-generating and nuclear electric power generation.Since fuel cell is
The Gibbs free energy part in the chemical energy of fuel is converted into electric energy by electrochemical reaction, not by Carnot cycle effect
Limitation, thus it is high-efficient；In addition, fuel cell-use fuel and oxygen are as raw material；There is no mechanical transmission component simultaneously, therefore does not have
Noise pollution, the pernicious gas given off are few.It can be seen that from energy saving and from the perspective of preserving the ecological environment, combustion
Expect that battery is most promising generation technology.
Due to the particularity of fuel cell itself, desired amounts of hydrogen is not only needed in pile anode, it is also necessary to controllable
Hydrogen Vapor Pressure carries out strict control to anode of fuel cell pressure.It is general using spray in control signal period in the prior art
Mouth opens quantity to realize that pressure is adjusted, and control precision is low, and single spout failure is big on overall performance influence, is unable to satisfy reality
Demand when use, so needing to develop a kind of fuel cell spray rail decompression control method to solve the problems of the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of fuel cells to spray rail decompression control method, and each nozzle can be made to be in good
Working condition, enhance the reliability of fuel cell.
In order to achieve the above object, the present invention adopts the following technical scheme: a kind of fuel cell sprays rail decompression control method,
Pressure control is carried out using decompression control system, which includes bottle group depressurized system, multiple spray rail pressure reducers, draws
Emitter, relief valve, pressure sensor, fuel cell pack, drop separator, drain valve and controller, specific control method are as follows:
The real-time anode pressure that fuel cell pack is acquired by pressure sensor calculates spray rail by controller according to target anode pressure
Opening time and shut-in time in pressure reducer each duty cycle open each then according to opening time and duty cycle circulation
A spray rail pressure reducer, relief valve pressure release when fuel cell stack anode pressure is greater than secure threshold, the hydrogen after pressure controls
Input control of the fuel cell stack anode inlet realization to fuel cell stack pressures.
Further, the controller adjusts spray rail pressure reducer one by controller when to spray rail pressure reducer control
Opening time T1 in a duty cycle is recycled to next spray rail pressure reducer work, when T1 is small after each duty cycle
In opening a spray rail pressure reducer in 1 duty cycle then single duty cycle, spray rail is opened if T1 is greater than 1 duty cycle
Pressure reducer quantity is that n1=(T1/T)+1, T is the duty cycle, and n1 is integer, wherein each spray rail pressure reducer is in the duty cycle
Interior opening time T1=T/n1, wherein T, the unit of T1 are ms.
Further, since spray rail is when pile low-power operation area works, fixed cycle injection will lead to single spout
Opening time is too short, leads to injector work efficiency drop, minimum unlatching of the spray rail pressure reducer within a duty cycle
Time is 10ms, when calculate the injector opening time be less than 10ms, the spray rail duty cycle be T3, T3=(10/T1) * T2, T2
For phase standard week.
Further, when the spray rail pressure reducer is in the work of high-power operation area, the spout opening time is close to work
Period, cut-out governing surplus are reduced, and internal pressure restores slack-off after fuel cell pack exhaust, and adjusting inlet pressure makes to spray rail decompression
The percentage of opening time T1 of the device within a duty cycle is less than 60%, i.e. T1/T < 60%.
Further, the inlet pressure range of the spray rail pressure reducer is 0.3MPa~1MPa, the spray rail pressure reducer
Outlet pressure is 0~0.5MPa.
Further, the output end of the bottle group depressurized system is connected with the input terminal of spray rail pressure reducer, the spray rail
The output end of pressure reducer is connected with the input terminal of injector, the output end of the injector respectively with the input terminal of relief valve and
The input terminal of pressure sensor is connected, and the output end of the pressure sensor is connected with the anode inlet of fuel cell pack,
The anode export of the fuel cell pack is connected with the input terminal of drop separator, the output end difference of the drop separator
It is connected with the input terminal of the input terminal of drain valve and injector, the output end of the throttle valve is connected with the input terminal of injector
Logical, the controller is connected with multiple spray rail pressure reducers.
After adopting the above technical scheme, calculating solenoid valve in a work week by pid algorithm when the present invention sprays rail work
Opening time in phase is recycled to next electromagnetic valve work after each duty cycle, to reach decompression and control flow
Purpose, which has remains to the characteristics of continuously working normally under section solenoid valve distress condition, enhance fuel cell hydrogen
The reliability of gas depressurized system, the system have selected the nozzle of big flow bore, and not exclusively working in single-nozzle can expire
Sufficient traffic requirement, primary open and close define a cycle, and each nozzle takes turns to operate a cycle, impure in single-nozzle
Long continuous operation, when selecting 4 nozzles, the maximum operating time of single-nozzle is the 1/4 of net cycle time, is not deposited
It is fail to open in the possibility of overheat, while if there is the damage of some solenoid valve, other solenoid valves can work on, and not influence
System worked well, if relief valve and detection device can be added, while additional when the damage of some solenoid valve can not close
It installs blocking system additional, closes the device and block the solenoid valve of failure that other solenoid valves is made to continue to work normally, by effectively adjusting
Degree strategy, makes each nozzle be in good working condition, enhances the reliability of fuel cell.
Simultaneously by the inlet pressure range 0.3MPa~1MPa for making to spray rail pressure reducer, the outlet pressure of rail pressure reducer is sprayed
It for 0~0.5MPa, outputs and inputs that pressure regulation spectrum is big, and improves the rapidity of control, and by efficient scheduling strategy,
So that each nozzle is in good working condition, enhances the reliability of fuel cell.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the structure chart that a kind of fuel cell proposed by the present invention sprays system in rail decompression control method；
Fig. 2 is the program flow diagram that a kind of fuel cell proposed by the present invention sprays controller in rail decompression control method.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.It is to be appreciated that following "upper",
Indicating positions or the position such as "lower", "left", "right", " longitudinal direction ", " transverse direction ", "inner", "outside", "vertical", "horizontal", "top", "bottom"
The word for setting relationship is based only upon orientation or positional relationship shown in the drawings, only for the purposes of the description present invention and simplifies description, and
It is not that device/element of indication or suggestion meaning must have a particular orientation or be constructed and operated in a specific orientation, therefore
It is not considered as limiting the invention.
Referring to Fig.1, the present invention provides a kind of fuel cell spray rail decompression control method, is pressed using decompression control system
Power control, the decompression control system include bottle group depressurized system 1, multiple spray rail pressure reducers 2, injector 3, relief valve 4, pressure biography
Sensor 5, fuel cell pack 6, drop separator 7, drain valve 8 and controller 9, the output end of the bottle group depressurized system 1 and spray
The input terminal of rail pressure reducer 2 is connected, and the output end of the spray rail pressure reducer is connected with the input terminal of injector, the injection
The output end of device is connected with the input terminal of the input terminal of relief valve and pressure sensor respectively, the output of the pressure sensor
End is connected with the anode inlet of fuel cell pack, the input terminal phase of the anode export and drop separator of the fuel cell pack
Connection, the output end of the drop separator are connected with the input terminal of the input terminal of drain valve and injector respectively, the section
The output end of stream valve is connected with the input terminal of injector, and the controller is connected with multiple spray rail pressure reducers.
Specific control method is as follows: the real-time anode pressure of fuel cell pack is acquired by pressure sensor, according to target
Anode pressure calculates opening time and shut-in time in spray rail pressure reducer each duty cycle by controller, then according to opening
It opens the time and duty cycle circulation opens each spray rail pressure reducer, relief valve is greater than secure threshold in fuel cell stack anode pressure
When pressure release, the hydrogen input fuel cell stack anode inlet after pressure controls realizes control to fuel cell stack pressures.
In the present embodiment, the controller adjusts spray rail pressure reducer by controller when to spray rail pressure reducer control
Opening time T1 within a duty cycle is recycled to next spray rail pressure reducer work after each duty cycle, when
Less than 1 duty cycle of T1 then opens a spray rail pressure reducer in the single duty cycle, opens if T1 is greater than 1 duty cycle
Spraying rail pressure reducer quantity for n1=(T1/T)+1, T is the duty cycle, and n1 is integer, wherein each spray rail pressure reducer is in the work
Opening time T1=T/n1 in period, wherein T, the unit of T1 are ms.
In the present embodiment, since spray rail is when pile low-power operation area works, fixed cycle injection will lead to single
The spout opening time is too short, leads to injector work efficiency drop, minimum of the spray rail pressure reducer within a duty cycle
Opening time is 10ms, when calculate the injector opening time be less than 10ms, the spray rail duty cycle be T3, T3=(10/T1) *
T2, T2 are phase standard week.
In the present embodiment, when the spray rail pressure reducer is in the work of high-power operation area, the spout opening time is close
Duty cycle, cut-out governing surplus are reduced, and internal pressure restores slack-off after fuel cell pack exhaust, and adjusting inlet pressure makes to spray rail
The percentage of opening time T1 of the pressure reducer within a duty cycle is less than 60%, i.e. T1/T < 60%.In the present embodiment,
Referring to Fig. 2, during controller adjusts spray rail pressure reducer, controller is controlled using following procedure process:
1, starting spray rail subfunction, subfunction start the period as 1ms~100ms, are set as needed；
2, maximum value is removed to collected Hydrogen Vapor Pressure in a spray rail and minimum value calculates the filtering of average value
Processing is allowed to more meet actual use needs；
3, if (Base_T≤OpenT) indicates whether the time counting Base_T for judging that current electromagnetic valve has been switched on is small
The time counting in the single spray rail duty cycle is indicated in the time Open_T for needing to open equal to single, Base_T, often into one
Secondary subfunction adds 1 certainly；
If 4, judging result is 1 (true), i.e., injecting time is not sufficient in this duty cycle, continues to keep current state and terminate
Subfunction；
If 5, judging result is 0 (not meeting), i.e., injecting time is enough in this duty cycle, through sentencing for row next step
It is disconnected；
6, if (Base_T≤200) expression judges whether the single duty cycle terminates；
If 7, the duty cycle is judged as 1, that is, it is not finished, then closes all solenoid valves, terminates subfunction；
If 8, the duty cycle is judged as 0, that is, terminate current operating cycle, calculates the spray rail number of next unlatching；
9, judge current control model；
10, if deterministic model then set target pressure=definite value air pressure；
11, if difference+air pressure of follow the mode then set target pressure=hydrogen and air pressure；
12, judge hydrogen current pressure > goal pressure+10kpa；
If 13, judging result is 1, indicates that Hydrogen Vapor Pressure is excessively high, directly halve the injecting time of next cycle；
If 14, judging result is 0, indicates that Hydrogen Vapor Pressure is normal, calculate the injecting time Open_T=of next cycle
Open_T+PID regulated quantity；
15, wherein PID regulated quantity is system according to goal pressure, and present hydrogen pressure and other parameters are calculated according to pid algorithm
Value out；
In the present embodiment, 2 inlet pressure range of spray rail pressure reducer is 0.3MPa~1MPa, the spray rail pressure reducer
2 outlet pressure is 0~0.5MPa.It outputs and inputs that pressure regulation spectrum is big, and improves the rapidity of control, and by effective
Scheduling strategy, so that each nozzle is in good working condition, enhance the reliability of fuel cell.
In addition to above preferred embodiment, there are other embodiments of the invention, and those skilled in the art can be according to this
Invention makes various changes and modifications, and as long as it does not depart from the spirit of the invention, should belong to appended claims of the present invention and determines
The range of justice.
Claims (6)
1. a kind of fuel cell sprays rail decompression control method, pressure control, the Decompression Controlling system are carried out using decompression control system
System includes bottle group depressurized system, multiple spray rail pressure reducers, injector, relief valve, pressure sensor, fuel cell pack, water droplet point
From device, drain valve and controller, which is characterized in that specific control method is as follows: acquiring fuel cell pack by pressure sensor
Real-time anode pressure, according to target anode pressure by controller calculate spray rail pressure reducer each duty cycle in unlatching when
Between and the shut-in time, open each spray rail pressure reducer then according to opening time and duty cycle circulation, relief valve is electric in fuel
Pressure release when pond heap anode pressure is greater than secure threshold, the hydrogen input fuel cell stack anode inlet realization pair after pressure controls
The control of fuel cell stack pressures.
2. fuel cell according to claim 1 sprays rail decompression control method, which is characterized in that the controller is to spray
When rail pressure reducer controls, opening time T1 of the spray rail pressure reducer within a duty cycle, each work are adjusted by controller
It is recycled to next spray rail pressure reducer work after end cycle, is opened when in less than 1 duty cycle of T1 then single duty cycle
One spray rail pressure reducer, opening spray rail pressure reducer quantity if T1 is greater than 1 duty cycle as n1=(T1/T)+1, T is work
Period, n1 are integer, wherein each spray opening time T1=T/n1 of the rail pressure reducer within the duty cycle, wherein T, and the list of T1
Position is ms.
3. fuel cell according to claim 2 sprays rail decompression control method, which is characterized in that the spray rail pressure reducer exists
Minimum opening time in one duty cycle is 10ms, when calculate the injector opening time is less than 10ms, spray rail work week
Phase is T3, and T3=(10/T1) * T2, T2 are phase standard week.
4. fuel cell according to claim 2 sprays rail decompression control method, which is characterized in that when the spray rail pressure reducer
When working in high-power operation area, internal pressure restores slack-off after fuel cell pack exhaust, and adjusting inlet pressure subtracts spray rail
The percentage of opening time T1 of the depressor within a duty cycle is less than 60%, i.e. T1/T < 60%.
5. fuel cell according to claim 1 sprays rail decompression control method, which is characterized in that the spray rail pressure reducer
Inlet pressure range is 0.3MPa~1MPa, and the outlet pressure of the spray rail pressure reducer is 0~0.5MPa.
6. fuel cell according to claim 1 sprays rail decompression control method, which is characterized in that the bottle group depressurized system
Output end with spray rail pressure reducer input terminal be connected, it is described spray rail pressure reducer output end be connected with the input terminal of injector
Logical, the output end of the injector is connected with the input terminal of the input terminal of relief valve and pressure sensor respectively, the pressure
The output end of sensor is connected with the anode inlet of fuel cell pack, and the anode export of the fuel cell pack is separated with water droplet
The input terminal of device is connected, the output end of the drop separator input terminal phase with the input terminal of drain valve and injector respectively
Connection, the output end of the throttle valve are connected with the input terminal of injector, and the controller is connected with multiple spray rail pressure reducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910417887.7A CN110112438A (en) | 2019-05-20 | 2019-05-20 | A kind of fuel cell spray rail decompression control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910417887.7A CN110112438A (en) | 2019-05-20 | 2019-05-20 | A kind of fuel cell spray rail decompression control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110690481A (en) * | 2019-09-23 | 2020-01-14 | 北京亿华通科技股份有限公司 | Pressure regulator control method of fuel cell system |
| CN110957508A (en) * | 2019-11-27 | 2020-04-03 | 中国第一汽车股份有限公司 | Fuel cell hydrogen supply control system and control method |
| CN113540537A (en) * | 2021-07-13 | 2021-10-22 | 金华氢途科技有限公司 | Fuel cell anode pressure frequency conversion injection control method |
| CN115369586A (en) * | 2022-08-12 | 2022-11-22 | 三技精密技术(广东)股份有限公司 | Alternating dyeing control method of multi-nozzle dyeing machine and dyeing machine |
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| CN115369586A (en) * | 2022-08-12 | 2022-11-22 | 三技精密技术(广东)股份有限公司 | Alternating dyeing control method of multi-nozzle dyeing machine and dyeing machine |
| CN115369586B (en) * | 2022-08-12 | 2023-09-26 | 三技精密技术(广东)股份有限公司 | Alternating dyeing control method of multi-nozzle dyeing machine and dyeing machine |
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