CN110131582A - A kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system - Google Patents
A kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system Download PDFInfo
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- CN110131582A CN110131582A CN201910460231.3A CN201910460231A CN110131582A CN 110131582 A CN110131582 A CN 110131582A CN 201910460231 A CN201910460231 A CN 201910460231A CN 110131582 A CN110131582 A CN 110131582A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2270/00—Applications
- F17C2270/07—Applications for household use
- F17C2270/0763—Fuel cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- General Engineering & Computer Science (AREA)
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- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
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- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides a kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system, shutdown hydrogen quality and last time downtime when including obtaining the shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder；Obtain the remaining hydrogen quality and current time of current each hydrogen storage cylinder；According to the hydrogen quality change rate and overall hydrogen gas mass change for shutting down hydrogen quality and each hydrogen storage cylinder of remaining hydrogen Mass Calculation；Judge whether that the remaining hydrogen quality in all hydrogen storage cylinders is respectively less than or is equal to preset threshold value；According to last time downtime and current time count evaluation time interval；Ageing management processing is carried out according to time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change；Record the hydrogen quality change rate and overall hydrogen gas mass change of time interval, each hydrogen storage cylinder.The advantages of this method, is: providing reference frame for each hydrogen storage cylinder performance of assessment fuel cell hydrogen system and service life, overall performance and service life.
Description
Technical field
The present invention relates to a kind of detection methods, in particular to a kind of hydrogen storage cylinder aging of fuel cell hydrogen system
Detection method.
Background technique
Hydrogen cell automobile technology mature increasingly, as a kind of no pollution, the new-energy automobile of zero-emission, hydrogen combustion
Material battery car has more and more entered traffic system, obtains being widely recognized as the public.Fuel-cell vehicle is with hydrogen
For fuel, by engine fuel, by chemical energy Efficient Conversion for electric energy to drive automobile, whole process is only discharged pure
Water, thus be the optimal energy saving and environment friendly zero-emission vehicles for replacing conventional fossil fuel automobile in the near future.
The fuel cell hydrogen system of hydrogen fuel cell generally comprises multiple hydrogen storage cylinders for being used to store hydrogen, with fuel
Battery hydrogen system is increased by the cyclic process number of filling hydrogen and supply hydrogen, as fuel cell hydrogen system high pressure power is stored
Process time lengthens, and all hydrogen storage cylinder air-tightness of fuel cell hydrogen system will gradually decrease, all storages of fuel cell hydrogen system
Hydrogen cylinder performance all will gradually decay, and the performance difference between the hydrogen storage cylinder of fuel cell hydrogen system will be gradually significant, influence
Fuel cell hydrogen status of system performance and service life.
Existing technology can not carry out online aging conditions detection to hydrogen storage cylinder, can only be independent by disassembly hydrogen storage cylinder
The aging conditions of the method detection hydrogen storage cylinder of detection, detecting step is complicated and labor intensive is more.
In summary, it is desirable to provide a kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system can overcome
The defect of the prior art.
Summary of the invention
The present invention is intended to provide a kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system, can overcome existing
The defect of technology.Goal of the invention of the invention is achieved by the following technical programs.
An embodiment of the invention provides a kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system, institute
Stating hydrogen storage cylinder degradation detecting method includes multiple steps:
Step 1: obtaining the shutdown hydrogen quality when shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder and last time
Downtime；
Step 2: obtaining the remaining hydrogen quality and current time of current each hydrogen storage cylinder；
Step 3: according to the hydrogen quality change rate for shutting down hydrogen quality and each hydrogen storage cylinder of remaining hydrogen Mass Calculation
With overall hydrogen gas mass change；
Step 4: judge whether that the remaining hydrogen quality in all hydrogen storage cylinders is respectively less than or is equal to preset first threshold,
If "Yes", step 5 is executed；
Step 5: according to last time downtime and current time count evaluation time interval；
Step 6: according to time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change into
The processing of row ageing management；
Step 7: the hydrogen quality change rate and overall hydrogen gas mass change of record time interval, each hydrogen storage cylinder.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 1
Shutdown hydrogen quality and last time downtime when obtaining the shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder include:
Step 101: temperature, connection hydrogen supply component when acquisition fuel cell hydrogen system last time shutdown in each hydrogen storage cylinder
With the loine pressure and last time downtime in the pipeline of hydrogen storage component；
Step 102: temperature and loine pressure meter of the fuel cell hydrogen system last time when shutting down in each hydrogen storage cylinder
Calculate the theoretical hydrogen quality in each hydrogen storage cylinder.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 2
The remaining hydrogen quality and current time for obtaining current each hydrogen storage cylinder include:
Step 201: successively opening each hydrogen storage cylinder and obtain the hydrogen storage cylinder being opened when each hydrogen storage cylinder is opened
Temperature, connection hydrogen supply component and hydrogen storage component pipeline in loine pressure and current time；
Step 202: the temperature and loine pressure for the hydrogen storage cylinder being opened when being opened according to each hydrogen storage cylinder calculate each
The remaining hydrogen quality of a hydrogen storage cylinder.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 6
Ageing management processing is carried out according to time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change
Include:
Step 601: acquisition time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change
Historical record；
Step 602: according to the hydrogen quality change rate and time interval of time interval and each hydrogen storage cylinder and each
The historical record of the hydrogen quality change rate of hydrogen storage cylinder carries out linear fit using least square method, obtains each hydrogen storage gas
The time rate of change of the hydrogen quality of bottle；
Step 603: the time rate of change for judging whether there is the hydrogen quality of hydrogen storage cylinder is greater than preset second threshold, if
"Yes" executes step 604；
Step 604: the hydrogen storage cylinder for prompting the time rate of change of hydrogen quality to be greater than preset time rate of change threshold value is old
Change, then executes step 7.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step
603 time rate of changes for judging whether there is the hydrogen quality of hydrogen storage cylinder are greater than preset second threshold, if "No", execute step
605；
Step 605: according to time interval and overall hydrogen gas mass change and time interval and overall hydrogen makings quantitative change
The historical record of rate carries out linear fit using least square method, obtains the time rate of change of overall hydrogen quality；
Step 606: judging whether the time rate of change of overall hydrogen quality is greater than preset third threshold value and holds if "Yes"
Row step 607；If "No", step 7 is executed；
Step 607: then prompt hydrogen storage component entirety aging executes step 7.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 4
Judge whether that the remaining hydrogen quality in all hydrogen storage cylinders is respectively less than or is equal to preset first threshold and executes step if "No"
Rapid 7.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the fuel is electric
Pond hydrogen system includes hydrogen supply component, hydrogen storage component, note hydrogen component, detection components, the first pipeline and the second pipeline, hydrogen storage component packet
Multiple hydrogen storage cylinders and multiple bottle-jack valves are included, detection components include barometer and multiple thermometers, are all provided on each hydrogen storage cylinder
Have a thermometer, the bottleneck of each hydrogen storage cylinder is equipped with bottle-jack valve, note hydrogen component by the first pipeline respectively with hydrogen supply component and
Multiple bottle-jack valves of hydrogen storage component are connected to, and hydrogen supply component is connected to by the second pipeline with outer fuel cell engine, barometer
It is arranged on the first pipeline.
The advantages of hydrogen storage cylinder degradation detecting method, is: for assessment each hydrogen storage cylinder performance of fuel cell hydrogen system and
Service life, overall performance and service life provide reference frame, facilitate and fuel cell hydrogen system user is instructed to carry out fuel electricity in time
The maintenance of pond hydrogen system and maintenance；Ageing management can be carried out to hydrogen storage cylinder online without dismantling hydrogen storage cylinder.
Detailed description of the invention
Referring to attached drawing, the disclosure of the present invention will become more readily understood.Skilled addressee readily understands that: this
It is only used to illustrate the technical scheme of the present invention for a little attached drawings, and is not intended to limit the scope of protection of the present invention.
In figure:
Fig. 1 shows the block diagram of fuel cell hydrogen system according to one embodiment of the present invention；
Fig. 2 shows the hydrogen storage cylinders of fuel cell hydrogen system according to one embodiment of the present invention as shown in Figure 1
The flow chart of degradation detecting method.
Specific embodiment
Fig. 1-2 and following description describe optional embodiments of the invention to instruct how those skilled in the art implement
It is of the invention with reproducing.In order to teach the technical scheme of the invention, it has simplified or omitted some conventional aspects.Those skilled in the art
It should be understood that being originated from the variation or replacement of these embodiments will be within the scope of the present invention.Those skilled in the art answer
The following features can be combined in various ways to form multiple variations of the present invention for the understanding.As a result, the invention is not limited to
Following optional embodiments, and be only limited by the claims and their equivalents.
Fig. 1 shows the block diagram of fuel cell hydrogen system according to one embodiment of the present invention.As shown in Figure 1, described
Fuel cell hydrogen system include hydrogen supply component A, hydrogen storage component B, note hydrogen component C, detection components (not shown), the first pipeline E and
Second pipeline F, hydrogen storage component B include multiple hydrogen storage cylinder B1 and multiple bottle-jack valve B2, and detection components include that barometer (does not show
Out) and multiple thermometer (not shown), it is equipped with thermometer on each hydrogen storage cylinder B1, the bottleneck of each hydrogen storage cylinder B1 is all provided with
There are bottle-jack valve B2, note hydrogen component C to connect respectively with multiple bottle-jack valve B2 of hydrogen supply component A and hydrogen storage component B by the first pipeline E
Logical, hydrogen supply component A is connected to by the second pipeline F with outer fuel cell engine D, and barometer is arranged on the first pipeline E.Institute
Stating the first pipeline E is the pipeline for connecting hydrogen supply component and hydrogen storage component.
Fig. 2 shows the hydrogen storage cylinders of fuel cell hydrogen system according to one embodiment of the present invention as shown in Figure 1
The flow chart of degradation detecting method.As shown in Fig. 2, the hydrogen storage cylinder degradation detecting method includes multiple steps:
Step 1: obtaining the shutdown hydrogen quality m when shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder1,m2…
mnWith last time downtime tstop；
Step 2: obtaining the remaining hydrogen mass M of current each hydrogen storage cylinder1,M2…MnWith current time tnow；
Step 3: according to shutdown hydrogen quality m1,m2…mnWith remaining hydrogen mass M1,M2…MnCalculate each hydrogen storage cylinder
Hydrogen quality change rate q1,q2…qnWith overall hydrogen gas mass change Q；The hydrogen quality of n-th of hydrogen storage cylinder changes
Rate qnCalculation formula are as follows:
qn=(mn-Mn) * 100%/Mn
The calculation formula of the overall hydrogen gas mass change Q are as follows:
Step 4: judging whether the remaining hydrogen mass M in all hydrogen storage cylinders1,M2…MnRespectively less than or equal to set
One threshold value executes step 5 if "Yes"；
Step 5: according to last time downtime tstopWith current time tnowCalculate time interval t=tnow-tstop；
Step 6: according to time interval t, the hydrogen quality change rate q of each hydrogen storage cylinder1,q2…qnWith overall hydrogen makings
Quantitative change rate Q carries out ageing management processing；
Step 7: the hydrogen quality change rate q of record time interval t, each hydrogen storage cylinder1,q2…qnWith overall hydrogen makings
Quantitative change rate Q.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 1
Obtain the shutdown m when shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder1,m2…mnWith last time downtime tstopPacket
It includes:
Step 101: obtaining the temperature tmp when shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder1,tmp2…
tmpn, connection hydrogen supply component and hydrogen storage component the first pipeline in loine pressure p and last time downtime tstop；
Step 102: temperature tmp of fuel cell hydrogen system last time when shutting down in each hydrogen storage cylinder1,tmp2…
tmpnThe theoretical hydrogen quality m in each hydrogen storage cylinder is calculated with loine pressure p1,m2…mn.N-th of hydrogen storage cylinder of the calculating
In theoretical hydrogen quality mnFormula are as follows:
mn=p*V*MH2/ (R*tmpn*Cof1)
Wherein V is the volume for the hydrogen that hydrogen storage cylinder can store, MH2It is mole for the hydrogen that hydrogen storage cylinder can store
Quality, R are universal gas constants, and Cof1 is predetermined the correction factor of reflection temperature and pressure corresponding relationship, Cof1's
Value and p and tmpnIt is related.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 2
Obtain the remaining hydrogen mass M of current each hydrogen storage cylinder1,M2…MnWith current time tnowInclude:
Step 201: successively opening each hydrogen storage cylinder and obtain the hydrogen storage cylinder being opened when each hydrogen storage cylinder is opened
Temperature Tmp1,Tmp2…Tmpn, connection hydrogen supply component and hydrogen storage component the first pipeline in loine pressure P1,P2…PnWith work as
Preceding time tnow, the hydrogen storage cylinder of successively opening is hydrogen storage cylinder to be opened according to preset permanent order, according to hydrogen storage cylinder
Pressure opens hydrogen storage cylinder from high in the end or successively opens each hydrogen storage cylinder in other sequences；
Step 202: the temperature for the hydrogen storage cylinder being opened when being opened according to each hydrogen storage cylinder
Tmp1,Tmp2…TmpnWith loine pressure P1,P2…PnCalculate the remaining hydrogen mass M of each hydrogen storage cylinder1,M2…
Mn.The remaining hydrogen mass M calculated in n-th of hydrogen storage cylindernFormula are as follows:
Mn=Pn*V*MH2/(R*Tmpn*Cof2)
Wherein Cof2 is predetermined the correction factor of reflection temperature and pressure corresponding relationship, the value and P of Cof2nWith
TmpnIt is related.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 6
According to time interval t, the hydrogen quality change rate q of each hydrogen storage cylinder1,q2…qnIt is carried out with overall hydrogen gas mass change Q old
Changing detection processing includes:
Step 601: acquisition time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change
Historical record；
Step 602: according to the hydrogen quality change rate q of time interval t and each hydrogen storage cylinder1,q2…qnAnd between the time
Every the historical record of the hydrogen quality change rate with each hydrogen storage cylinder, linear fit is carried out using least square method, is obtained each
The time rate of change qt of the hydrogen quality of a hydrogen storage cylinder1,qt2…qtn；
Step 603: judging whether there is the time rate of change qt of the hydrogen quality of hydrogen storage cylinder1,qt2…qtnGreater than preset
Second threshold executes step 604 if "Yes"；
Step 604: the hydrogen storage cylinder for prompting the time rate of change of hydrogen quality to be greater than preset time rate of change threshold value is old
Change, then executes step 7.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step
603 time rate of changes for judging whether there is the hydrogen quality of hydrogen storage cylinder are greater than preset second threshold, if "No", execute step
605；
Step 605: according to time interval t and overall hydrogen gas mass change Q and time interval and overall hydrogen quality
The historical record of change rate carries out linear fit using least square method, obtains the time rate of change Qt of overall hydrogen quality；
Step 606: judge whether the time rate of change Qt of overall hydrogen quality is greater than preset third threshold value, if "Yes",
Execute step 607；If "No", step 7 is executed；
Step 607: then prompt hydrogen storage component entirety aging executes step 7.
The hydrogen storage cylinder degradation detecting method that said one embodiment according to the present invention provides, wherein the step 4
Judge whether the remaining hydrogen mass M in all hydrogen storage cylinders1,M2…MnRespectively less than or it is equal to preset first threshold, if
"No" executes step 7.
The advantages of hydrogen storage cylinder degradation detecting method, is: for assessment each hydrogen storage cylinder performance of fuel cell hydrogen system and
Service life, overall performance and service life provide reference frame, facilitate and fuel cell hydrogen system user is instructed to carry out fuel electricity in time
The maintenance of pond hydrogen system and maintenance；Ageing management can be carried out to hydrogen storage cylinder online without dismantling hydrogen storage cylinder.
Although being done indeed, it will be appreciated that the description of front has been carried out in example through the invention to the present invention
Out will be apparent to those skilled in the science it is such and other improvement and change be deemed to fall such as set forth herein
Broad range of the present invention in.Therefore, although the present invention reference has been made to preferred embodiment and be described, meaning
It is not to be restricted the equipment for having novelty therefrom, on the contrary, it, which is intended to include, meets part disclosed above, claim
Broad range within various improvement and equivalent modifications.
Claims (7)
1. a kind of hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system, which is characterized in that the hydrogen storage cylinder aging inspection
Survey method includes multiple steps:
Step 1: shutdown hydrogen quality and last time when obtaining the shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder are shut down
Time；
Step 2: obtaining the remaining hydrogen quality and current time of current each hydrogen storage cylinder；
Step 3: according to the hydrogen quality change rate for shutting down hydrogen quality and each hydrogen storage cylinder of remaining hydrogen Mass Calculation and always
Body hydrogen quality change rate；
Step 4: judge whether that the remaining hydrogen quality in all hydrogen storage cylinders is respectively less than or is equal to preset first threshold, if
"Yes" executes step 5；
Step 5: according to last time downtime and current time count evaluation time interval；
Step 6: being carried out according to time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change old
Change detection processing；
Step 7: the hydrogen quality change rate and overall hydrogen gas mass change of record time interval, each hydrogen storage cylinder.
2. the hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system as described in claim 1, which is characterized in that the step
Rapid 1 obtains the shutdown hydrogen quality and last time downtime packet when the shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder
It includes:
Step 101: obtaining temperature, connection hydrogen supply component and the storage when shutdown of fuel cell hydrogen system last time in each hydrogen storage cylinder
Loine pressure and last time downtime in the pipeline of hydrogen component；
Step 102: temperature and loine pressure of the fuel cell hydrogen system last time when shutting down in each hydrogen storage cylinder calculate each
Theoretical hydrogen quality in a hydrogen storage cylinder.
3. the hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system as described in claim 1, which is characterized in that the step
Rapid 2 obtain the remaining hydrogen quality of current each hydrogen storage cylinder and current time includes:
Step 201: successively opening each hydrogen storage cylinder and obtain the temperature for the hydrogen storage cylinder being opened when each hydrogen storage cylinder is opened
Loine pressure and current time in the pipeline of degree, connection hydrogen supply component and hydrogen storage component；
Step 202: the temperature and loine pressure for the hydrogen storage cylinder being opened when being opened according to each hydrogen storage cylinder calculate each storage
The remaining hydrogen quality of hydrogen cylinder.
4. the hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system as described in claim 1, which is characterized in that the step
Rapid 6 carry out ageing management according to time interval, the hydrogen quality change rate of each hydrogen storage cylinder and overall hydrogen gas mass change
Processing includes:
Step 601: acquisition time interval, the hydrogen quality change rate of each hydrogen storage cylinder and going through for overall hydrogen gas mass change
History record；
Step 602: according to the hydrogen quality change rate and time interval and each hydrogen storage of time interval and each hydrogen storage cylinder
The historical record of the hydrogen quality change rate of gas cylinder carries out linear fit using least square method, obtains each hydrogen storage cylinder
The time rate of change of hydrogen quality；
Step 603: the time rate of change for judging whether there is the hydrogen quality of hydrogen storage cylinder is greater than preset second threshold, if
"Yes" executes step 604；If "No", step 605 is executed；
Step 604: prompting the time rate of change of hydrogen quality to be greater than the hydrogen storage cylinder aging of preset time rate of change threshold value, so
Step 7 is executed afterwards.
5. the hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system as claimed in claim 4, which is characterized in that the step
Rapid 603 time rate of changes for judging whether there is the hydrogen quality of hydrogen storage cylinder are greater than preset second threshold and execute step if "No"
Rapid 605；
Step 605: according to time interval and overall hydrogen gas mass change and time interval and overall hydrogen gas mass change
Historical record, use least square method to carry out linear fit, obtain the time rate of change of overall hydrogen quality；
Step 606: judging whether the time rate of change of overall hydrogen quality is greater than preset third threshold value and executes step if "Yes"
Rapid 607；If "No", step 7 is executed；
Step 607: then prompt hydrogen storage component entirety aging executes step 7.
6. the hydrogen storage cylinder degradation detecting method of fuel cell hydrogen system as described in claim 1, which is characterized in that the step
Rapid 4 judge whether that the remaining hydrogen quality in all hydrogen storage cylinders is respectively less than or is equal to preset first threshold, if "No", execute
Step 7.
7. the hydrogen storage cylinder degradation detecting method of the fuel cell hydrogen system as described in any claim in claim 1,
Be characterized in that, the fuel cell hydrogen system include hydrogen supply component, hydrogen storage component, note hydrogen component, detection components, the first pipeline and
Second pipeline, hydrogen storage component include multiple hydrogen storage cylinders and multiple bottle-jack valves, and detection components include barometer and multiple thermometers,
Thermometer is equipped on each hydrogen storage cylinder, the bottleneck of each hydrogen storage cylinder is equipped with bottle-jack valve, and note hydrogen component passes through the first pipe
Road is connected to multiple bottle-jack valves of hydrogen supply component and hydrogen storage component respectively, and hydrogen supply component passes through the second pipeline and outer fuel cell
Engine connection, barometer are arranged on the first pipeline.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112803044A (en) * | 2020-12-31 | 2021-05-14 | 上海捷氢科技有限公司 | Hydrogen control method and system for fuel cell |
| CN113251310A (en) * | 2021-06-10 | 2021-08-13 | 潍柴动力股份有限公司 | Method and equipment for detecting hydrogen storage cylinder |
| CN113586949A (en) * | 2021-08-04 | 2021-11-02 | 上海氢枫能源技术有限公司 | Method and system for monitoring service life of hydrogen storage cylinder group |
| WO2023035726A1 (en) * | 2021-09-08 | 2023-03-16 | 中车株洲电力机车有限公司 | Hydrogen leakage detection method and system for hydrogen fuel cell system and rail transit vehicle |
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| CN110926707A (en) * | 2019-12-13 | 2020-03-27 | 潍柴动力股份有限公司 | Method, device and equipment for detecting leakage of hydrogen storage system |
| CN110926707B (en) * | 2019-12-13 | 2021-10-29 | 潍柴动力股份有限公司 | Method, device and equipment for detecting leakage of hydrogen storage system |
| CN111169288A (en) * | 2019-12-31 | 2020-05-19 | 潍柴动力股份有限公司 | Method and device for detecting hydrogen leakage of vehicle-mounted hydrogen supply system and fuel cell vehicle |
| CN111169288B (en) * | 2019-12-31 | 2022-01-25 | 潍柴动力股份有限公司 | Method and device for detecting hydrogen leakage of vehicle-mounted hydrogen supply system and fuel cell vehicle |
| CN112803044A (en) * | 2020-12-31 | 2021-05-14 | 上海捷氢科技有限公司 | Hydrogen control method and system for fuel cell |
| CN112803044B (en) * | 2020-12-31 | 2022-04-08 | 上海捷氢科技股份有限公司 | Hydrogen control method and system for fuel cell |
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| CN113586949A (en) * | 2021-08-04 | 2021-11-02 | 上海氢枫能源技术有限公司 | Method and system for monitoring service life of hydrogen storage cylinder group |
| CN113586949B (en) * | 2021-08-04 | 2023-02-28 | 上海氢枫能源技术有限公司 | Method and system for monitoring service life of hydrogen storage cylinder group |
| WO2023035726A1 (en) * | 2021-09-08 | 2023-03-16 | 中车株洲电力机车有限公司 | Hydrogen leakage detection method and system for hydrogen fuel cell system and rail transit vehicle |
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