CN110212220A - A kind of hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system - Google Patents
A kind of hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system Download PDFInfo
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- CN110212220A CN110212220A CN201910460233.2A CN201910460233A CN110212220A CN 110212220 A CN110212220 A CN 110212220A CN 201910460233 A CN201910460233 A CN 201910460233A CN 110212220 A CN110212220 A CN 110212220A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3254—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers using a flow detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3263—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers using a differential pressure detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3272—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers for verifying the internal pressure of closed containers
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Abstract
A kind of hydrogen storage cylinder method for diagnosing faults the present invention provides fuel cell hydrogen system includes the temperature for obtaining loine pressure and each hydrogen storage cylinder in the pipeline for connecting hydrogen storage component and hydrogen supply component in fuel cell hydrogen system；According to the initial hydrogen quality in each hydrogen storage cylinder of the temperature computation of loine pressure and each hydrogen storage cylinder；Judge whether to reach preset failure diagnosis time, if "No", the variable quantity of the quality of hydrogen in cumulative calculation hydrogen storage cylinder；If "Yes", root obtains the Current Temperatures of each hydrogen storage cylinder；According to the Current Temperatures of the variable quantity of the quality of hydrogen, initial hydrogen quality and each hydrogen storage cylinder in each hydrogen storage cylinder, the theoretical pressure of pipeline is calculated；Obtain the actual pressure of pipeline；Fault diagnosis processing is carried out according to the theoretical pressure and actual pressure of connection hydrogen storage component and the pipeline of hydrogen supply component.The advantages of this method, is: can find that the failure of hydrogen storage cylinder, implementation method are simple and low in cost in time.
Description
Technical field
The present invention relates to a kind of method for diagnosing faults, in particular to a kind of hydrogen storage cylinder of fuel cell hydrogen system
Method for diagnosing faults.
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, and bottle-jack valve is
It is mounted on the component that gas is connected to or disconnects with extraneous holding in the control hydrogen cylinder of hydrogen storage cylinder bottleneck.In fuel cell hydrogen system
In system operation process, if bottle-jack valve open function, maintenance open function or closing function break down, even if fuel cell hydrogen
System receives extraneous control command and fuel cell hydrogen system controller performs relevant operation, due to practical bottle-jack valve
Switch state be it is unknown, therefore, it is difficult to judge whether bottle-jack valve realizes objective function.For example, fuel cell hydrogen system receives
External world's order boots up operation, needs to open whole hydrogen storage cylinders, fuel cell hydrogen system controller is given according to control logic
The corresponding driving control signal of each hydrogen storage cylinder bottle-jack valve, passes through driving circuit and controls hydrogen storage cylinder bottle-jack valve and generate unlatching
Movement, if the internal circuit of hydrogen storage cylinder bottle-jack valve breaks down (open circuit etc.), driving circuit can not be opened successfully
Bottle-jack valve can not judge hydrogen storage gas since fuel cell hydrogen system controller can not detect bottleneck valve-driving circuit electric current
Bottle bottle-jack valve actual switch state.If hydrogen storage cylinder bottle-jack valve be not turned on or hydrogen storage cylinder bottle-jack valve open after again anticipate
Outer closing, it is breakneck for fuel cell hydrogen system that leading to pressure between hydrogen storage cylinder, there are larger differences.
In the prior art, the driving circuit for the special bottle-jack valve being only integrated in fuel cell hydrogen system controller,
The energy that detection opens bottle-jack valve process electric current, maintains bottle-jack valve open state electric current, closes bottle-jack valve process electric current is not had
Power, therefore can not judge hydrogen storage cylinder bottle-jack valve actual switch state.
In summary, it is desirable to provide a kind of hydrogen storage cylinder method for diagnosing faults 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 method for diagnosing faults 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 method for diagnosing faults of fuel cell hydrogen system, institute
Stating hydrogen storage cylinder method for diagnosing faults includes multiple steps:
Step 1: obtain loine pressure in the pipeline for connecting hydrogen storage component and hydrogen supply component in fuel cell hydrogen system and
The temperature of each hydrogen storage cylinder；
Step 2: according to the initial hydrogen makings in each hydrogen storage cylinder of the temperature computation of loine pressure and each hydrogen storage cylinder
Amount；
Step 3: judging whether to reach preset failure diagnosis time, if "No", execute step 4；If "Yes", step is executed
5；
Step 4: then the variable quantity of the quality of hydrogen in cumulative calculation hydrogen storage cylinder executes step 3；
Step 5: root obtains the Current Temperatures of each hydrogen storage cylinder；
Step 6: according to the variable quantity of the quality of hydrogen, initial hydrogen quality and each hydrogen storage cylinder in each hydrogen storage cylinder
Current Temperatures, calculate connection hydrogen storage component and hydrogen supply component pipeline theoretical pressure；
Step 7: obtaining the actual pressure of the pipeline of current connection hydrogen storage component and hydrogen supply component；
Step 8: failure being carried out according to the theoretical pressure and actual pressure of connection hydrogen storage component and the pipeline of hydrogen supply component and is examined
Disconnected processing.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein the step 4
The variable quantity of the quality of hydrogen includes being measured by the bottleneck flow measurement in each hydrogen storage cylinder in cumulative calculation hydrogen storage cylinder
To hydrogen flowing quantity integral calculation obtain the variable quantity of the quality of hydrogen in hydrogen storage cylinder.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein the step 4
The variable quantity of the quality of hydrogen further includes the pipe by measurement connection hydrogen storage component and hydrogen supply component in cumulative calculation hydrogen storage cylinder
Front end Hydrogen Vapor Pressure, rear end Hydrogen Vapor Pressure, control signal, gas temperature and the components temperature of the controllable air flow device of road are led to
It crosses and calculates or table look-up to obtain the hydrogen flowing quantity that unit time stream passes through the controllable components, then pass through hydrogen flowing quantity integral calculation
Obtain the variable quantity of the quality of hydrogen in hydrogen storage cylinder.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein step 8 basis
The theoretical pressure and actual pressure of the pipeline of connection hydrogen storage component and hydrogen supply component carry out fault diagnosis processing
Step 801: pressure difference value is obtained according to theoretical pressure and actual pressure；
Step 802: judging whether pressure difference value is greater than preset first threshold, if "Yes", execute step 803；
Step 803: report first kind failure simultaneously records fault related data.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein step 802 is sentenced
Whether disconnected pressure difference value is greater than preset first threshold, if "No", executes step 804；
Step 804: judging whether pressure difference value is greater than preset second threshold, if "Yes", execute step 805；If "No",
Execute step 1.
Step 805: the second class failure of report simultaneously records fault related data.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein first threshold
Value is greater than second threshold.
The hydrogen storage cylinder method for diagnosing faults 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, multiple thermometers, first flowmeter and second flow
It counts, 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 first
Pipeline 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 external fuel electricity
The connection of pond engine, barometer are arranged on the first pipeline, and first flowmeter setting is sent out in the second pipeline and outer fuel cell
The junction of motivation, second flowmeter are arranged in the first pipeline and infuse the junction of hydrogen component.
The advantages of hydrogen storage cylinder method for diagnosing faults, is: passing through pressure, temperature and the hydrogen in fuel cell hydrogen system
Throughput judges whether hydrogen storage cylinder point breaks down, and implementation method is simple；It is low in cost, without using the more expensive electric current of price
Sample circuit is the fault diagnosis realized to initial stage hydrogen storage cylinder；Compensate for fuel cell hydrogen system controller hardware capability not
Foot, has ensured fuel cell hydrogen system operational safety.
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 method for diagnosing faults.
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, the
The junction of the second pipeline F Yu outer fuel cell engine D is arranged in flow meters, and second flowmeter is arranged in the first pipeline
The junction of E and note hydrogen component C.The first pipeline E is the pipeline for connecting hydrogen storage component and hydrogen supply 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 method for diagnosing faults.As shown in Fig. 2, the hydrogen storage cylinder method for diagnosing faults includes multiple steps:
Step 1: obtaining the pipeline pressure in the first pipeline for connecting hydrogen storage component and hydrogen supply component in fuel cell hydrogen system
The temperature t of power P1 and each hydrogen storage cylinder1、t2…tn；
Step 2: according to the temperature t of loine pressure P1 and each hydrogen storage cylinder1、t2…tnIt calculates in each hydrogen storage cylinder
Initial hydrogen quality；The initial hydrogen quality m calculated in n-th of hydrogen storage cylindern, formula are as follows:
mn=P1*V*MH2/(R*tn*Cof)
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 Cof is predetermined the correction factor of reflection temperature and pressure corresponding relationship, the value of Cof
With P1 and tnIt is related.
Step 3: judging whether to reach preset failure diagnosis time, if "No", execute step 4；If "Yes", step is executed
5；
Step 4: the variable quantity m of the quality of hydrogen in cumulative calculation hydrogen storage cylindert, then execute step 3；
Step 5: root obtains the Current Temperatures T of each hydrogen storage cylinder1,T2…Tn；
Step 6: according to the variable quantity m of the quality of hydrogen in each hydrogen storage cylindert, initial hydrogen quality m1,m2…mnWith it is each
The Current Temperatures T of a hydrogen storage cylinder1,T2…Tn, calculate the theoretical pressure of the first pipeline of connection hydrogen storage component and hydrogen supply component
Pref；
Pref=(m1+m2+…mn-mt)/(V*MH2/(R*T1*Cof1)+V*MH2/(R*T2*Cof2)+…V*MH2/(R*Tn*
Cofn))
Wherein Cof1,Cof2…CofnIt is predetermined the correction factor of reflection temperature and pressure corresponding relationship,
Cof1,Cof2…CofnWith Pref and T1,T2…TnCorrelation calculates above-mentioned formula establishment of sening as an envoy to by Mathematical Method
Cof1,Cof2…CofnAnd Pref, the Mathematical Method include newton steepest descent method or dichotomy etc..
Step 7: obtaining the actual pressure Pact of the first pipeline of current connection hydrogen storage component and hydrogen supply component；
Step 8: according to the theoretical pressure Pref and actual pressure of connection hydrogen storage component and the first pipeline of hydrogen supply component
Pact carries out fault diagnosis processing, and then processing terminate.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein the step 4
The variable quantity of the quality of hydrogen includes being measured by the bottleneck flow measurement in each hydrogen storage cylinder in cumulative calculation hydrogen storage cylinder
To hydrogen flowing quantity Q (t) integral calculation obtain the variable quantity m of the quality of hydrogen in hydrogen storage cylindert, the integral calculation stored up
The variable quantity m of the quality of hydrogen in hydrogen cylindertFormula are as follows:
Wherein t is time of measuring.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein the step 4
The variable quantity of the quality of hydrogen further includes the by measurement connection hydrogen storage component and hydrogen supply component in cumulative calculation hydrogen storage cylinder
Front end Hydrogen Vapor Pressure, rear end Hydrogen Vapor Pressure, control signal, gas temperature and the components temperature of controllable air flow device on one pipeline
Then degree passes through hydrogen flowing quantity by calculating or tabling look-up to obtain unit time stream by the hydrogen flowing quantity Q (t) of the controllable components
Integral calculation obtains the variable quantity m of the quality of hydrogen in hydrogen storage cylindert.Described table look-up refers to and is obtained by many experiments measurement data
To the front end Hydrogen Vapor Pressure of controllable air flow device, rear end Hydrogen Vapor Pressure, control signal, gas temperature and components temperature and hydrogen
Contrast relationship between flow.The calculating refers to, calculates the mode combined according to experimental data and/or fluid analysis software,
Obtain the front end Hydrogen Vapor Pressure, rear end Hydrogen Vapor Pressure, control signal, gas temperature of the controllable air flow device indicated with mathematical formulae
With the contrast relationship of components temperature and hydrogen flowing quantity, hydrogen flowing quantity is calculated by the mathematical formulae.The integral calculation
Obtain the variable quantity m of the quality of hydrogen in hydrogen storage cylindertFormula are as follows:
Wherein t is time of measuring.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein step 8 basis
The theoretical pressure and actual pressure of first pipeline of connection hydrogen storage component and hydrogen supply component carry out fault diagnosis processing
Step 801: pressure difference value P=is obtained according to theoretical pressure Pref and actual pressure Pact | Pref-Pact |；
Step 802: judging whether pressure difference value P is greater than preset first threshold, if "Yes", execute step 803；
Step 803: report first kind failure simultaneously records fault related data.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein step 802 is sentenced
Whether disconnected pressure difference value P is greater than preset first threshold, if "No", executes step 804；
Step 804: judging whether pressure difference value P is greater than preset second threshold, if "Yes", execute step 805；If
"No" executes step 1.
Step 805: the second class failure of report simultaneously records fault related data.
The hydrogen storage cylinder method for diagnosing faults that said one embodiment according to the present invention provides, wherein first threshold
Value is greater than second threshold.
The advantages of hydrogen storage cylinder method for diagnosing faults, is: passing through pressure, temperature and the hydrogen in fuel cell hydrogen system
Throughput judges whether hydrogen storage cylinder point breaks down, and implementation method is simple；It is low in cost, without using the more expensive electric current of price
Sample circuit is the fault diagnosis realized to initial stage hydrogen storage cylinder；Compensate for fuel cell hydrogen system controller hardware capability not
Foot, has ensured fuel cell hydrogen system operational safety.
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 method for diagnosing faults of fuel cell hydrogen system, which is characterized in that the hydrogen storage cylinder failure is examined
Disconnected method the following steps are included:
Step 1: obtaining loine pressure in the pipeline for connecting hydrogen storage component and hydrogen supply component in fuel cell hydrogen system and each
The temperature of hydrogen storage cylinder；
Step 2: according to the initial hydrogen quality in each hydrogen storage cylinder of the temperature computation of loine pressure and each hydrogen storage cylinder；
Step 3: judging whether to reach preset failure diagnosis time, if "No", execute step 4；If "Yes", step 5 is executed；
Step 4: then the variable quantity of the quality of hydrogen in cumulative calculation hydrogen storage cylinder executes step 3；
Step 5: root obtains the Current Temperatures of each hydrogen storage cylinder；
Step 6: according to working as the variable quantity of the quality of hydrogen in each hydrogen storage cylinder, initial hydrogen quality and each hydrogen storage cylinder
Preceding temperature calculates the theoretical pressure of the pipeline of connection hydrogen storage component and hydrogen supply component；
Step 7: obtaining the actual pressure of the pipeline of current connection hydrogen storage component and hydrogen supply component；
Step 8: being carried out at fault diagnosis according to the theoretical pressure and actual pressure of connection hydrogen storage component and the pipeline of hydrogen supply component
Reason.
2. the hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system as described in claim 1, which is characterized in that the step
The variable quantity of the quality of hydrogen includes by the bottleneck flowmeter measurement in each hydrogen storage cylinder in rapid 4 cumulative calculation hydrogen storage cylinder
Obtained hydrogen flowing quantity integral calculation obtains the variable quantity of the quality of hydrogen in hydrogen storage cylinder.
3. the hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system as described in claim 1, which is characterized in that the step
The variable quantity of the quality of hydrogen further includes by measurement connection hydrogen storage component and hydrogen supply component in rapid 4 cumulative calculation hydrogen storage cylinder
Front end Hydrogen Vapor Pressure, rear end Hydrogen Vapor Pressure, control signal, gas temperature and the components temperature of controllable air flow device on pipeline
By calculating or tabling look-up to obtain unit time stream by the hydrogen flowing quantity of the controllable components, then pass through hydrogen flowing quantity integrating meter
Calculation obtains the variable quantity of the quality of hydrogen in hydrogen storage cylinder.
4. the hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system as described in claim 1, which is characterized in that step 8
Carrying out fault diagnosis processing according to the theoretical pressure and actual pressure of connection hydrogen storage component and the pipeline of hydrogen supply component includes:
Step 801: pressure difference value is obtained according to theoretical pressure and actual pressure；
Step 802: judging whether pressure difference value is greater than preset first threshold, if "Yes", execute step 803；
Step 803: report first kind failure simultaneously records fault related data.
5. the hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system as claimed in claim 4, which is characterized in that step
802 judge whether pressure difference value is greater than preset first threshold, if "No", execute step 804；
Step 804: judging whether pressure difference value is greater than preset second threshold, if "Yes", execute step 805；If "No", execute
Step 1.
Step 805: the second class failure of report simultaneously records fault related data.
6. the hydrogen storage cylinder method for diagnosing faults of fuel cell hydrogen system as claimed in claim 5, which is characterized in that described
One threshold value is greater than second threshold.
7. the hydrogen storage cylinder method for diagnosing faults 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, detection components include barometer, multiple thermometers,
First flowmeter and second flowmeter are equipped with thermometer on each hydrogen storage cylinder, and the bottleneck of each hydrogen storage cylinder is equipped with bottle
Mouth valve, note hydrogen component are connected to multiple bottle-jack valves of hydrogen supply component and hydrogen storage component respectively by the first pipeline, and hydrogen supply component is logical
It crosses the second pipeline to be connected to outer fuel cell engine, barometer is arranged on the first pipeline, and first flowmeter setting is the
The junction of two pipelines and outer fuel cell engine, second flowmeter are arranged in the first pipeline and infuse the connection of hydrogen component
Place.
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| CN110816314A (en) * | 2019-10-31 | 2020-02-21 | 武汉格罗夫氢能汽车有限公司 | Method for judging hydrogen flow entering fuel cell |
| CN111391660A (en) * | 2020-03-31 | 2020-07-10 | 潍柴动力股份有限公司 | Method and device for detecting pressure of gas storage cylinder and engine |
| CN112092627A (en) * | 2020-08-14 | 2020-12-18 | 东风柳州汽车有限公司 | Automobile-used hydrogen leakage detection system |
| CN112460479A (en) * | 2020-11-23 | 2021-03-09 | 东风柳州汽车有限公司 | Detection method, device, medium and system for hydrogen cylinder of hydrogen energy automobile and automobile |
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| CN114865022A (en) * | 2022-06-02 | 2022-08-05 | 上海捷氢科技股份有限公司 | Method for detecting fault of cylinder valve in vehicle-mounted hydrogen storage system and vehicle-mounted hydrogen storage system |
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