CN114878084A - Hydrogen energy vehicle hydrogen leakage detection method - Google Patents
Hydrogen energy vehicle hydrogen leakage detection method Download PDFInfo
- Publication number
- CN114878084A CN114878084A CN202210787362.4A CN202210787362A CN114878084A CN 114878084 A CN114878084 A CN 114878084A CN 202210787362 A CN202210787362 A CN 202210787362A CN 114878084 A CN114878084 A CN 114878084A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- concentration
- hydrogen concentration
- time
- detection method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fuel Cell (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to the technical field of hydrogen energy vehicles, and discloses a hydrogen leakage detection method for a hydrogen energy vehicle, which comprises the following steps: s1: detecting the concentration of hydrogen; s2: judging whether the concentration of the hydrogen reaches a first hydrogen concentration limit value or not; if yes, go to S3; if not, go to S4; s3: judging whether the duration of the concentration of the hydrogen reaching the first hydrogen concentration limit value reaches a first time or not; if yes, go to S6; if not, go to S4; s4: calculating the accumulated hydrogen concentration in the second time; s5: judging whether the accumulated hydrogen concentration in the second time reaches a second hydrogen concentration limit value or not; if yes, go to S6; if not, no processing is carried out; s6: and reporting the hydrogen leakage fault. The detection result of the hydrogen leakage detection method for the hydrogen energy vehicle is more accurate, the hydrogen leakage can be detected in time, and the safety performance of the vehicle is improved.
Description
Technical Field
The invention relates to the technical field of hydrogen energy vehicles, in particular to a method for detecting hydrogen leakage of a hydrogen energy vehicle.
Background
The hydrogen energy vehicle is a vehicle using a hydrogen fuel cell as a power source, and the hydrogen fuel cell is a power generation device that directly converts chemical energy of hydrogen and oxygen into electric energy. Vehicles using hydrogen fuel cells have zero emissions, high efficiency, low noise, and rapid energy replenishment, and hydrogen fuel cells are considered to be an ideal vehicle power plant to replace conventional internal combustion engines. Detection of hydrogen gas leakage is critical to ensuring safe operation of hydrogen-powered vehicles.
In the prior art, two methods are generally used for detecting whether hydrogen leaks, one method is to compare the hydrogen quality change with the hydrogen consumption rate to judge whether hydrogen leaks, but the method has large calculation amount, and the calculated hydrogen consumption rate has large error, so that misjudgment is easy to generate. The other is to install a hydrogen concentration sensor at a fixed position to monitor the concentration of hydrogen, and when the concentration of hydrogen is detected to exceed a set limit value and is maintained for a period of time, the hydrogen concentration sensor gives an alarm. However, since the hydrogen diffusion capability is strong and the escape performance is good, and the hydrogen concentration sensor is installed in the open space, when hydrogen leakage occurs, the hydrogen is easily affected by environmental factors during diffusion, so that the concentration of the hydrogen cannot be maintained or continuously rises, the detection result is not accurate enough, and when the hydrogen leakage problem occurs to a vehicle, the hydrogen leakage problem may not be detected in time, and a safety risk exists.
Disclosure of Invention
The invention aims to provide a hydrogen leakage detection method for a hydrogen energy vehicle, which aims to solve the problem that the detection result of the method for detecting whether hydrogen is leaked is inaccurate in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydrogen energy vehicle hydrogen leakage detection method includes:
s1: detecting the concentration of hydrogen;
s2: judging whether the concentration of the hydrogen reaches a first hydrogen concentration limit value or not;
if yes, go to S3;
if not, go to S4;
s3: judging whether the duration of the hydrogen concentration reaching the first hydrogen concentration limit value reaches a first time or not;
if yes, go to S6;
if not, go to S4;
s4: calculating the accumulated hydrogen concentration in the second time;
s5: judging whether the accumulated hydrogen concentration in the second time reaches a second hydrogen concentration limit value or not;
if yes, go to S6;
if not, no processing is carried out;
s6: and reporting the hydrogen leakage fault.
As a preferable mode of the above hydrogen leakage detection method for a hydrogen energy vehicle, the calculating of the accumulated hydrogen concentration in the second time in S4 includes:
and calculating the accumulated hydrogen concentration in the second time by integrating the hydrogen concentration in the second time.
As a preferable mode of the hydrogen leakage detection method for a hydrogen energy vehicle described above, the detecting the concentration of hydrogen in S1 includes:
the concentration of hydrogen gas is detected by a hydrogen gas concentration sensor.
As a preferable mode of the hydrogen leakage detection method for a hydrogen energy vehicle, the first time and the second time are set according to an installation position of the hydrogen concentration sensor and a distance between the hydrogen concentration sensor and a position where hydrogen leakage is likely.
As one preferable mode of the above hydrogen leakage detection method for a hydrogen energy vehicle, the first hydrogen concentration limit value is equal to a product of a first set hydrogen concentration and a first hydrogen concentration correction coefficient.
As a preferable mode of the hydrogen leakage detection method for a hydrogen energy vehicle, the first hydrogen concentration correction coefficient is obtained from a first hydrogen concentration correction coefficient-vehicle speed relation table according to a vehicle running speed.
As a preferable mode of the hydrogen leakage detection method for a hydrogen energy vehicle, the first set hydrogen concentration is set based on a mounting position of the hydrogen concentration sensor and a distance between the hydrogen concentration sensor and a position where hydrogen leakage is likely.
As a preferable mode of the above hydrogen leakage detection method for a hydrogen energy vehicle, the second hydrogen concentration limit value is equal to a product of a second set hydrogen concentration and a second hydrogen concentration correction coefficient.
As a preferable mode of the hydrogen leakage detection method for the hydrogen energy vehicle, the second hydrogen concentration correction coefficient is obtained from a second hydrogen concentration correction coefficient-vehicle speed relation table according to the vehicle running speed.
As a preferable mode of the hydrogen leakage detection method for a hydrogen energy vehicle, the second set hydrogen concentration is set based on a mounting position of the hydrogen concentration sensor and a distance between the hydrogen concentration sensor and a position where hydrogen leakage is likely.
The invention has the beneficial effects that:
the invention aims to provide a hydrogen leakage detection method for a hydrogen energy vehicle, which is used for judging whether the concentration of hydrogen reaches a first hydrogen concentration limit value or not, judging whether the duration time of the concentration of the hydrogen reaching the first hydrogen concentration limit value reaches a first time or not if the concentration of the hydrogen reaches the first hydrogen concentration limit value, and reporting a hydrogen leakage fault if the concentration of the hydrogen reaches the first hydrogen concentration limit value. And when the concentration of the hydrogen does not reach the first hydrogen concentration limit value or the concentration of the hydrogen reaches the first hydrogen concentration limit value but the duration time does not reach the first time, judging whether the concentration of the hydrogen accumulated in the continuous second time reaches the second hydrogen concentration limit value or not, and reporting the hydrogen leakage fault if the concentration of the hydrogen does reach the second hydrogen concentration limit value. The hydrogen leakage detection method for the hydrogen energy vehicle can detect that the hydrogen leaks in time by judging that the accumulated hydrogen concentration in the second time reaches the second hydrogen concentration limit value when the hydrogen leakage occurs but the hydrogen leakage is not detected because the hydrogen is influenced by environmental factors when being diffused and the concentration of the hydrogen does not reach the first hydrogen concentration limit value or the duration time of reaching the first hydrogen concentration limit value does not reach the first time, so that the detection result is more accurate, the hydrogen leakage is detected in time, and the safety performance of the vehicle is improved.
Drawings
Fig. 1 is a flowchart of a hydrogen leakage detection method for a hydrogen energy vehicle according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The invention provides a hydrogen leakage detection method for a hydrogen energy vehicle, which comprises the following steps of:
s1: the concentration of hydrogen gas is detected.
The concentration of hydrogen gas is detected by a hydrogen gas concentration sensor mounted on the hydrogen energy source vehicle.
Hydrogen concentration sensors are mounted above a bottleneck valve of a hydrogen cylinder, above a fuel cell engine and inside a passenger compartment on the hydrogen energy vehicle. It is understood that the hydrogen concentration sensor may be disposed at other positions according to actual needs.
S2: judging whether the concentration of the hydrogen reaches a first hydrogen concentration limit value or not; if yes, go to S3; if not, S4 is performed.
Wherein the first hydrogen concentration limit value is equal to the product of the first set hydrogen concentration and the first hydrogen concentration correction coefficient.
A first set hydrogen concentration is set according to the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen is likely to leak. The relation between the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen leakage is likely to occur and the first set hydrogen concentration is obtained according to the experience of the worker. It is understood that the hydrogen leakage prone position is a position on the vehicle where hydrogen leakage is likely to occur.
And obtaining a first hydrogen concentration correction coefficient through a first hydrogen concentration correction coefficient-vehicle speed relation table according to the vehicle running speed.
The first hydrogen concentration correction parameter is in negative correlation with the vehicle speed, and the first hydrogen concentration correction coefficient-vehicle speed relation table is obtained through test. The specific test process is as follows: simulating hydrogen leakage at a vehicle, and keeping the concentration of the leaked hydrogen at a first initial concentration value p 1 Running at a fixed vehicle speed, recording a first actual concentration detected by the hydrogen concentration sensor at the vehicle speed, and calculating an average value q of the first actual hydrogen concentration during the whole running process of the vehicle 1 By the mean value q of the first actual concentration 1 With a first initial concentration value p 1 And dividing to obtain a first hydrogen concentration correction coefficient corresponding to the vehicle speed. The vehicle runs at different speeds respectively to test the mean value q of the first actual concentration corresponding to different speeds 1 And obtaining first hydrogen concentration correction coefficients corresponding to different vehicle speeds so as to obtain a first hydrogen concentration correction coefficient-vehicle speed relation table. Wherein, considering the influence of different driving directions, the vehicle driving route is preferentially selected to be a circular route during the test.
In the actual running process of the vehicle, the VCU obtains a first hydrogen concentration correction coefficient by checking a relation table of the first hydrogen concentration correction coefficient and the vehicle speed according to the vehicle speed in the running process. The first hydrogen concentration correction coefficient is thus a variation value relating to the vehicle speed, in which case the hydrogen leakage failure can be judged more accurately.
S3: judging whether the duration of the concentration of the hydrogen reaching the first hydrogen concentration limit value reaches a first time or not; if yes, go to S6; if not, S4 is performed.
The first time is set according to the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen is easy to leak. The relation between the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position prone to hydrogen leakage and the first time is obtained according to the experience of workers.
S4: the cumulative hydrogen concentration over the second time is calculated.
Wherein the hydrogen concentration sensor calculates the cumulative hydrogen concentration over the second time by integrating the hydrogen concentration detected over the second time, that is, calculates the hydrogen concentration cumulative over the continuous second time.
And setting the second time according to the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen is easy to leak. And obtaining the relation between the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen is easy to leak and the second time according to the experience of workers.
S5: judging whether the accumulated hydrogen concentration in the second time reaches a second hydrogen concentration limit value or not; if yes, S6 is performed.
Wherein the second hydrogen concentration limit is equal to a product of the second set hydrogen concentration and the second hydrogen concentration correction factor. And obtaining a second hydrogen concentration correction coefficient through a second hydrogen concentration correction coefficient-vehicle speed relation table according to the vehicle running speed.
And the second hydrogen concentration correction coefficient-vehicle speed relation table is obtained through test. The specific test process is as follows: simulating hydrogen leakage at a vehicle, and keeping the concentration of the leaked hydrogen at a second initial concentration value p 2 And running on the circular route at a fixed speed and recording a second actual concentration detected by the hydrogen concentration sensor at the speed, wherein the two conditions that the vehicle runs for at least three circles on the circular route and the running time of the vehicle is at least a second time are simultaneously met during the test. Preferably, the travel time is N times the second time. Randomly selecting a time period of a second time, and calculating a second actual concentration q accumulated in the second time 2 . By a second actual concentration q integrated over a second time 2 And a second initial concentration value p 2 And dividing to obtain a second hydrogen concentration correction coefficient corresponding to the vehicle speed. Respectively driving the vehicles at different speeds to test the second actual concentration q accumulated in the second time corresponding to different speeds 2 And obtaining second hydrogen concentration correction coefficients corresponding to different vehicle speeds, thereby obtaining a relationship table of the second hydrogen concentration correction coefficients and the vehicle speed.
And setting a second set hydrogen concentration according to the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen is easy to leak. The relationship between the installation position of the hydrogen concentration sensor and the distance between the hydrogen concentration sensor and the position where hydrogen leakage is likely to occur and the second set hydrogen concentration is obtained according to the experience of the worker.
And if the accumulated hydrogen concentration in the second time does not reach the second hydrogen concentration limit value, not processing. At this time, it is considered that the hydrogen gas leakage does not occur in the vehicle, and therefore, no treatment is performed.
S6: and reporting the hydrogen leakage fault.
Optionally, when the hydrogen leakage is detected, a fault alarm is issued while a hydrogen leakage fault is reported.
The hydrogen leakage detection method for the hydrogen energy vehicle can detect that the hydrogen leaks in time by judging that the accumulated hydrogen concentration in the second time reaches the second hydrogen concentration limit value when the hydrogen leakage occurs but the hydrogen leakage is not detected because the hydrogen is influenced by environmental factors when being diffused and the concentration of the hydrogen does not reach the first hydrogen concentration limit value or the duration time of reaching the first hydrogen concentration limit value does not reach the first time, so that the detection result is more accurate, the hydrogen leakage is detected in time, and the safety performance of the vehicle is improved.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A hydrogen leakage detection method for a hydrogen energy vehicle, comprising:
s1: detecting the concentration of hydrogen;
s2: judging whether the concentration of the hydrogen reaches a first hydrogen concentration limit value or not;
if yes, go to S3;
if not, go to S4;
s3: judging whether the duration of the hydrogen concentration reaching the first hydrogen concentration limit value reaches a first time or not;
if yes, go to S6;
if not, go to S4;
s4: calculating the accumulated hydrogen concentration in the second time;
s5: judging whether the accumulated hydrogen concentration in the second time reaches a second hydrogen concentration limit value or not;
if yes, go to S6;
if not, no processing is carried out;
s6: and reporting the hydrogen leakage fault.
2. The hydrogen leakage detection method of a hydrogen energy-source vehicle according to claim 1, wherein calculating the accumulated hydrogen concentration over the second time in S4 includes:
and calculating the accumulated hydrogen concentration in the second time by integrating the hydrogen concentration in the second time.
3. The hydrogen energy source vehicle hydrogen leakage detection method according to claim 1, wherein detecting the concentration of hydrogen gas in S1 includes:
the concentration of hydrogen gas is detected by a hydrogen gas concentration sensor.
4. A hydrogen leakage detection method for a hydrogen energy-powered vehicle as claimed in claim 3, characterized in that the first time and the second time are set in accordance with a mounting position of the hydrogen concentration sensor and a distance between the hydrogen concentration sensor and a position where hydrogen is likely to leak.
5. A hydrogen-energy-source vehicle hydrogen leakage detection method according to claim 3, characterized in that the first hydrogen concentration limit value is equal to a product of a first set hydrogen concentration and a first hydrogen concentration correction coefficient.
6. The hydrogen leakage detection method for a hydrogen energy-powered vehicle according to claim 5, characterized in that the first hydrogen concentration correction factor is obtained from a first hydrogen concentration correction factor-vehicle speed relationship table in accordance with a vehicle running speed.
7. A hydrogen leakage detection method for a hydrogen energy-source vehicle according to claim 5, characterized in that the first set hydrogen concentration is set based on a mounting position of the hydrogen concentration sensor and a distance between the hydrogen concentration sensor and a position where hydrogen leakage is likely.
8. A hydrogen-energy-source vehicle hydrogen leakage detection method according to claim 3, characterized in that the second hydrogen concentration limit value is equal to a product of a second set hydrogen concentration and a second hydrogen concentration correction coefficient.
9. The hydrogen leakage detection method for a hydrogen energy-powered vehicle according to claim 8, characterized in that the second hydrogen concentration correction factor is obtained from a second hydrogen concentration correction factor-vehicle speed relationship table in accordance with a vehicle running speed.
10. A hydrogen leakage detection method for a hydrogen energy-source vehicle according to claim 8, characterized in that the second set hydrogen concentration is set based on a mounting position of the hydrogen concentration sensor and a distance between the hydrogen concentration sensor and a position where hydrogen leakage is likely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787362.4A CN114878084B (en) | 2022-07-06 | 2022-07-06 | Hydrogen leakage detection method for hydrogen energy vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787362.4A CN114878084B (en) | 2022-07-06 | 2022-07-06 | Hydrogen leakage detection method for hydrogen energy vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114878084A true CN114878084A (en) | 2022-08-09 |
| CN114878084B CN114878084B (en) | 2022-10-28 |
Family
ID=82683715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210787362.4A Active CN114878084B (en) | 2022-07-06 | 2022-07-06 | Hydrogen leakage detection method for hydrogen energy vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114878084B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117405308A (en) * | 2023-12-15 | 2024-01-16 | 浙江大学 | Hydrogen leakage positioning system and positioning method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004139842A (en) * | 2002-10-17 | 2004-05-13 | Nissan Motor Co Ltd | Hydrogen leakage detecting system of fuel cell vehicle |
| US20120305430A1 (en) * | 2011-06-02 | 2012-12-06 | GM Global Technology Operations LLC | Use of hydrogen sensor to detect hydrogen storage system pressure regulator failure |
| CN108258345A (en) * | 2018-03-20 | 2018-07-06 | 华霆（合肥）动力技术有限公司 | Battery coolant leakage detection apparatus, battery cooling system and vehicle |
| JP2020091989A (en) * | 2018-12-05 | 2020-06-11 | トヨタ自動車株式会社 | Gas detector for fuel cell vehicle |
| CN111942231A (en) * | 2020-07-23 | 2020-11-17 | 东风汽车集团有限公司 | Protection method, hydrogen management system and protection system for hydrogen leakage vehicle |
| CN212158964U (en) * | 2020-05-21 | 2020-12-15 | 考克利尔竞立(苏州)氢能科技有限公司 | Test device for detecting hydrogen leakage rate of electrolytic cell |
| CN112277649A (en) * | 2020-11-27 | 2021-01-29 | 武汉格罗夫氢能汽车有限公司 | Hydrogen safety system and control method of fuel cell hydrogen energy automobile |
| CN113022331A (en) * | 2021-03-10 | 2021-06-25 | 北京卡达克科技中心有限公司 | Hydrogen leakage monitoring and alarming method and system for fuel cell vehicle |
| CN113720537A (en) * | 2021-08-18 | 2021-11-30 | 江苏大学 | Detection system and detection method for hydrogen leakage of fuel cell vehicle |
| CN114184692A (en) * | 2021-08-16 | 2022-03-15 | 人本股份有限公司 | Method for detecting hydrogen content in steel |
-
2022
- 2022-07-06 CN CN202210787362.4A patent/CN114878084B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004139842A (en) * | 2002-10-17 | 2004-05-13 | Nissan Motor Co Ltd | Hydrogen leakage detecting system of fuel cell vehicle |
| US20120305430A1 (en) * | 2011-06-02 | 2012-12-06 | GM Global Technology Operations LLC | Use of hydrogen sensor to detect hydrogen storage system pressure regulator failure |
| CN108258345A (en) * | 2018-03-20 | 2018-07-06 | 华霆（合肥）动力技术有限公司 | Battery coolant leakage detection apparatus, battery cooling system and vehicle |
| JP2020091989A (en) * | 2018-12-05 | 2020-06-11 | トヨタ自動車株式会社 | Gas detector for fuel cell vehicle |
| CN212158964U (en) * | 2020-05-21 | 2020-12-15 | 考克利尔竞立(苏州)氢能科技有限公司 | Test device for detecting hydrogen leakage rate of electrolytic cell |
| CN111942231A (en) * | 2020-07-23 | 2020-11-17 | 东风汽车集团有限公司 | Protection method, hydrogen management system and protection system for hydrogen leakage vehicle |
| CN112277649A (en) * | 2020-11-27 | 2021-01-29 | 武汉格罗夫氢能汽车有限公司 | Hydrogen safety system and control method of fuel cell hydrogen energy automobile |
| CN113022331A (en) * | 2021-03-10 | 2021-06-25 | 北京卡达克科技中心有限公司 | Hydrogen leakage monitoring and alarming method and system for fuel cell vehicle |
| CN114184692A (en) * | 2021-08-16 | 2022-03-15 | 人本股份有限公司 | Method for detecting hydrogen content in steel |
| CN113720537A (en) * | 2021-08-18 | 2021-11-30 | 江苏大学 | Detection system and detection method for hydrogen leakage of fuel cell vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117405308A (en) * | 2023-12-15 | 2024-01-16 | 浙江大学 | Hydrogen leakage positioning system and positioning method |
| CN117405308B (en) * | 2023-12-15 | 2024-03-26 | 浙江大学 | Hydrogen leakage positioning system and positioning method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114878084B (en) | 2022-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113022331B (en) | Hydrogen leakage monitoring and alarming method and system for fuel cell vehicle | |
| CN100359160C (en) | Method for monitoring a sensor | |
| CN112031946B (en) | Fault diagnosis method for fuel evaporation system | |
| WO2022233278A1 (en) | Online monitoring method and system for hydrogen fuel cell stack, and hydrogen fuel cell vehicle using monitoring method | |
| CN112659899B (en) | Leakage fusion detection system and method for vehicle-mounted hydrogen supply system | |
| CN114878084B (en) | Hydrogen leakage detection method for hydrogen energy vehicle | |
| CN113447212B (en) | Hydrogen leakage detection method and detection system thereof, and hydrogen energy vehicle | |
| CN112803044B (en) | Hydrogen control method and system for fuel cell | |
| CN102318114A (en) | Fuel cell hydrogen concentration estimation device and fuel cell system | |
| CN110661018B (en) | Method and system for detecting hydrogen leakage position of hydrogen fuel cell vehicle | |
| US20190214664A1 (en) | Cell reversal diagnostics for a fuel cell stack | |
| US7359790B2 (en) | Apparatus for converting energy that can be operated with fuel, in particular fuel cell assembly | |
| CN114520351B (en) | Fuel cell system and fault detection method and hydrogen leakage detection method thereof | |
| CN113865798A (en) | Testing device and testing method for simulating hydrogen leakage detection of vehicle-mounted hydrogen system | |
| CN112748221A (en) | Method for detecting hydrogen leakage of whole vehicle by using light truck hydrogen fuel cell vehicle | |
| CN218241902U (en) | Hydrogen supply system of hydrogen fuel cell vehicle, hydrogen leakage detection device and vehicle | |
| JP5077723B2 (en) | Fuel cell deterioration diagnosis device | |
| KR20060072707A (en) | Hydrogen leakage supervisory apparatus for fuel cell car | |
| CN113077564A (en) | Vehicle early warning method and device | |
| CN110849557A (en) | Car carbon tank stop valve leakproofness detecting system | |
| CN118088925B (en) | Vehicle-mounted high-pressure hydrogen storage system health degree diagnosis method, control method and device | |
| JP2005123139A (en) | Fuel cell system | |
| CN220021179U (en) | Hydrogen fuel cell test system | |
| CN117419858B (en) | Air leakage detection method and air leakage detection device for air inlet side of engine | |
| CN113551159B (en) | Method for judging leakage of buried gas pipeline in anaerobic environment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |