CN115127749A - Fuel cell stack airtightness testing method and device and electronic equipment - Google Patents
Fuel cell stack airtightness testing method and device and electronic equipment Download PDFInfo
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- CN115127749A CN115127749A CN202210699736.7A CN202210699736A CN115127749A CN 115127749 A CN115127749 A CN 115127749A CN 202210699736 A CN202210699736 A CN 202210699736A CN 115127749 A CN115127749 A CN 115127749A
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- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 238000001514 detection method Methods 0.000 claims abstract description 145
- 238000000034 method Methods 0.000 claims abstract description 35
- 238000012544 monitoring process Methods 0.000 claims abstract description 30
- 239000001257 hydrogen Substances 0.000 claims description 76
- 229910052739 hydrogen Inorganic materials 0.000 claims description 76
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 44
- 239000007789 gas Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 14
- 230000007423 decrease Effects 0.000 claims description 11
- 238000004590 computer program Methods 0.000 claims description 9
- 238000010998 test method Methods 0.000 claims description 4
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- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000010923 batch production Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000013307 optical fiber Substances 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
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- 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
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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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Abstract
The application discloses a fuel cell stack airtightness testing method and device and electronic equipment, wherein the method comprises the following steps: responding to the air tightness detection instruction, and determining the detection type indicated by the detection instruction; according to the detection type, inflating the cavity which is required to be inflated and corresponds to the detection type, and monitoring the reading of the flowmeter on the cavity to be detected and corresponds to the detection type; when the reading of the flowmeter belongs to the reading in the normal reading range within the first preset time, whether the reading of the flowmeter of the cavity to be measured is airtight qualified or not is judged according to the first preset condition. Therefore, the problems that the existing fuel cell stack is long in testing time and not suitable for mass production when in airtight testing are solved.
Description
Technical Field
The invention relates to the technical field of artificial intelligence control, in particular to a fuel cell stack airtightness testing method and device and electronic equipment.
Background
The tightness of the fuel cell stack is crucial to the output performance and safety of the stack, and the tightness of the stack must be detected before the stack is operated. At present, a fuel cell stack is composed of a plurality of groups of fuel cells, each group of fuel cells comprises a bipolar plate composed of an upper plate and a lower plate, a membrane electrode arranged above the bipolar plate and a membrane electrode arranged below the bipolar plate, a water cavity is arranged between the upper plate and the lower plate, an air cavity is arranged above the membrane electrode, and a hydrogen cavity is arranged below the membrane electrode.
Disclosure of Invention
The application aims to provide a fuel cell stack airtightness testing method and device and electronic equipment. The method is used for saving the airtight testing time of the fuel cell stack and improving the testing efficiency.
In a first aspect, an embodiment of the present application provides a fuel cell stack gas tightness testing method, where the method includes:
responding to an air tightness detection instruction, and determining a detection type indicated by the detection instruction;
according to the detection type, inflating the cavity which is required to be inflated and corresponds to the detection type, and monitoring the reading of the flowmeter on the cavity to be detected and corresponds to the detection type;
when the reading of the flowmeter belongs to the reading in the normal reading range within a first preset time, judging whether the reading of the flowmeter of the cavity to be detected is an airtight qualified reading or not according to a first preset condition;
if the detection type comprises a leakage type between cavities, the cavity needing to be inflated is a leaked cavity, and the cavity to be detected is a leaked cavity; if the detection type is a type that the cavity leaks to the atmosphere, the cavity needing to be inflated and the cavity to be detected are both cavities with leakage.
According to the method, the test result is compared with the relevant preset value to judge whether the reading number of the flowmeter meets the standard, if so, the detection test of the time is finished, namely, for the external leakage detection, the external leakage test of the hydrogen air cavity, the air cavity and the water cavity can be simultaneously detected, and for the serial leakage, the test can be finished through two tests of hydrogen empty serial water and empty serial hydrogen, so that the test time is saved, in addition, the detection device related to the air tightness detection of the fuel cell stack in the method has a simple structure, and is suitable for batch production; the method avoids inaccurate test results caused by instability of equipment or an external environment, and improves test accuracy.
In some possible embodiments, the inflating, according to the detection type, the cavity that needs to be inflated and corresponds to the detection type, and monitoring a reading of a flow meter on a cavity to be measured and corresponds to the detection type includes:
if the detection type comprises a leakage type between the cavities and the leakage of the hydrogen cavity and the air cavity to the water cavity is detected, simultaneously inflating the hydrogen cavity and the air cavity and monitoring the reading of a flowmeter on the water cavity;
if the detection type comprises a leakage type between the cavities and the detection hydrogen cavity leaks to the air cavity, inflating the hydrogen cavity and monitoring the reading of a flowmeter on the air cavity;
and if the detection type is a cavity leakage type to the atmosphere, simultaneously inflating a hydrogen cavity, a water cavity and an air cavity, and respectively monitoring the readings of the hydrogen cavity, the water cavity and the air cavity.
In some possible embodiments, the determining, by a first preset condition, whether the reading of the flow meter of the chamber to be measured is an airtight qualified reading includes:
judging whether the reading of the flowmeter of the cavity to be measured meets the first preset condition or not, and if so, determining that the reading of the flowmeter is an airtight qualified reading; otherwise, determining that the flowmeter reading is not an airtight qualified reading;
if the detection type comprises a leakage type between cavities and the detected hydrogen cavity leaks to the air cavity, the first preset condition is that the readings of the flowmeter continuously decline within a second preset time and the detected readings of the flowmeter are all smaller than a preset leakage standard value;
if the detection type comprises a leakage type between cavities, leakage of the hydrogen cavity and the air cavity to the water cavity is detected, or the detection type is a leakage type of the cavities to the atmosphere, the first preset condition is that the increment of the reading of the flowmeter detected in unit time is not larger than a first preset value, and the detected reading of the flowmeter is smaller than a preset leakage standard value;
if the detection type is a cavity leakage type to the atmosphere, the first preset condition is that the detected flowmeter readings continuously decline within a second preset time and the flowmeter readings are all smaller than a preset leakage standard value.
In some possible embodiments, determining whether the flow meter reading falls within the normal reading range within the first predetermined time is performed by:
and if the reading of the flowmeter changes within a first preset time and the reading of the flowmeter does not exceed a preset measuring range of the flowmeter arranged in the corresponding cavity to be measured within the first preset time, determining that the reading of the flowmeter of the cavity to be measured is an airtight qualified reading.
In some possible embodiments, the detection types include an inter-cavity leak type and a cavity to atmosphere leak type;
the method further comprises the following steps:
firstly, detecting the leakage type between the cavities, and after the detection of the leakage type between the cavities is finished, detecting the leakage type of the cavities to the atmosphere.
The testing sequence is to test the leakage type between the cavities firstly and then to test the leakage type of the cavities to the atmosphere, so that the influence of unclean exhaust on the leakage type testing result between the cavities when the leakage type of the cavities to the atmosphere is tested is avoided.
In a second aspect, embodiments of the present application provide a fuel cell stack gas tightness testing apparatus, including:
the determining module is used for responding to an air tightness detection instruction and determining the detection type indicated by the detection instruction;
the monitoring module is used for inflating the cavity which is required to be inflated and corresponds to the detection type according to the detection type and monitoring the reading of the flow meter on the cavity to be detected and corresponds to the detection type;
the judging module is used for judging whether the reading of the flowmeter of the cavity to be detected is an airtight qualified reading or not according to a first preset condition when the reading of the flowmeter belongs to the reading within a normal reading range within a first preset time;
if the detection type comprises a leakage type between cavities, the cavity needing to be inflated is a leaked cavity, and the cavity to be detected is a leaked cavity; if the detection type is a type that the cavity leaks to the atmosphere, the cavity needing to be inflated and the cavity to be detected are both cavities with leakage.
In a third aspect, an embodiment of the present application provides an electronic device, including at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of fuel cell stack gas tightness testing provided by the above first aspect.
In a fourth aspect, embodiments of the present application provide a computer storage medium storing a computer program for causing a computer to execute the fuel cell stack gas tightness testing method provided in the first aspect.
The application discloses a fuel cell stack airtightness testing method, which judges whether the flowmeter reading meets the standard or not by comparing the flowmeter reading in cavities to be tested corresponding to different detection types with related preset values, if so, the detection test of the time is finished, for the external leakage detection, the external leakage test of a hydrogen air cavity, an air cavity and a water cavity can be simultaneously detected, and for the serial leakage, the test can be finished by two tests of hydrogen empty serial water and empty serial hydrogen, so that the testing time is saved, in addition, a detecting device related to the fuel cell stack airtightness detection in the application has a simple structure, and is suitable for batch production; the method avoids inaccurate test results caused by instability of equipment or an external environment, and improves test accuracy.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic diagram of a fuel cell stack according to one embodiment of the present application;
FIG. 2 is a schematic flow diagram of a fuel cell stack gas tightness test method according to an embodiment of the present application;
FIG. 3 is a detailed flow chart of a fuel cell stack gas tightness testing method according to an embodiment of the present application, applied to detect the type of leakage of the hydrogen chamber to the air chamber or the leakage of the air chamber to the hydrogen chamber or the leakage of the chamber to the atmosphere;
FIG. 4 is a detailed flow chart of a fuel cell stack gas tightness testing method according to an embodiment of the present application, applied to detect the type of leakage of the hydrogen chamber to the air chamber or the leakage of the air chamber to the hydrogen chamber;
FIG. 5 is a schematic diagram of a fuel cell stack gas tightness testing device according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and exhaustively described below with reference to the accompanying drawings. In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" in the text is only an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: three cases of a alone, a and B both, and B alone exist, and in addition, "a plurality" means two or more than two in the description of the embodiments of the present application.
In the description of the embodiments of the present application, the term "plurality" means two or more unless otherwise specified, and other terms and the like should be understood similarly, and the preferred embodiments described herein are only for the purpose of illustrating and explaining the present application, and are not intended to limit the present application, and features in the embodiments and examples of the present application may be combined with each other without conflict.
To further explain the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the specific embodiments. Although the embodiments of the present application provide method operation steps as shown in the following embodiments or figures, more or fewer operation steps may be included in the method based on conventional or non-inventive labor. In steps where no necessary causal relationship exists logically, the order of execution of these steps is not limited to the order of execution provided by the embodiments of the present application. The method can be executed in the order of the embodiments or the method shown in the drawings or in parallel in the actual process or the control device.
In view of the problems of the prior art that the testing time is long and the fuel cell stack is not suitable for mass production when the fuel cell stack is tested for air tightness. The application provides a fuel cell stack airtightness testing method and device and electronic equipment, which can save testing time and are suitable for batch production; the method avoids inaccurate test results caused by instability of equipment or an external environment, and improves test accuracy.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The fuel cell stack gas tightness test method in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a fuel cell stack according to an embodiment of the present application is shown.
As shown in fig. 1, it is assumed that the fuel cell stack includes two fuel cells, and in fig. 1, from top to bottom, there are an upper unipolar plate 10, a first membrane electrode 11, a first fuel cell upper plate 12, a first fuel cell lower plate 13, a second membrane electrode 14, a second fuel cell upper plate 15, a second fuel cell lower plate 16, a third membrane electrode 17, and a lower unipolar plate 18.
An air cavity is formed between the upper monopolar plate 10 and the first membrane electrode 11, a hydrogen cavity is formed between the first membrane electrode 11 and the first fuel cell upper plate 12, a water cavity is formed between the first fuel cell upper plate 12 and the first fuel cell lower plate 13, an air cavity is formed between the first fuel cell lower plate 13 and the second membrane electrode 14, a hydrogen cavity is formed between the second membrane electrode 14 and the second fuel cell upper plate 15, a water cavity is formed between the second fuel cell upper plate 15 and the second fuel cell lower plate 16, an air cavity is formed between the second fuel cell lower plate 16 and the third membrane electrode 17, and a hydrogen cavity is formed between the third membrane electrode 17 and the lower monopolar plate 18.
Fig. 2 shows a schematic flow chart of a fuel cell stack gas tightness testing method provided by an embodiment of the present application, which includes:
step 201: in response to a hermeticity detection instruction, determining a detection type indicated by the detection instruction.
The detection types comprise: the leakage type between the cavities and the leakage type of the cavities to the atmosphere comprise a hydrogen-air serial water leakage type (leakage of a hydrogen cavity and an air cavity to the water cavity) and a hydrogen-air serial water leakage type (leakage of hydrogen to the air cavity) or an air-hydrogen serial leakage type (leakage of air to the hydrogen cavity).
When receiving the airtightness detection instruction, the type of leakage indicated in the detection instruction is first determined.
As an optional implementation manner, the detection of the type of leakage between the cavities is performed first, and after the detection of the type of leakage between the cavities is completed, the detection of the type of leakage of the cavities to the atmosphere is performed.
The leakage type detection sequence is not limited in the application and serves as an optional implementation mode, the leakage type detection sequence is characterized in that the leakage type detection between the cavities is firstly carried out, then the leakage type detection of the cavities to the atmosphere is carried out, and therefore the accuracy of the test of leakage between the follow-up detection cavities due to unclean influence of exhaust in the process of carrying out the detection of the leakage of the cavities to the atmosphere is effectively prevented, and the test time is prolonged.
Different detection types are different corresponding to the cavities needing to be inflated, if the detection types comprise leakage types among the cavities, the cavities needing to be inflated are the cavities with leakage, and the cavities to be detected are the cavities to be leaked; if the detection type is a cavity leakage type to atmosphere, the cavity needing to be inflated and the cavity to be detected are both cavities with leakage.
Specifically, if the detection type includes a leakage between cavities type, and leakage of the hydrogen chamber and the air chamber into the water chamber is detected, then the hydrogen chamber and the air chamber are simultaneously inflated to monitor the meter reading on the water chamber.
And simultaneously inflating the hydrogen cavity and the air cavity, arranging the flowmeter in the water cavity, and monitoring the flowmeter reading on the water cavity in real time.
If the detection type comprises a leakage type between the cavities, and when the hydrogen cavity is detected to leak to the air cavity, the hydrogen cavity is inflated, and the reading of a flowmeter on the air cavity is monitored.
In the application, when the detection type comprises a leakage type between cavities, the principle is always that when the hydrogen cavity is detected to leak to the air cavity or the air cavity leaks to the hydrogen cavity, when the hydrogen cavity is detected to leak to the air cavity, the hydrogen cavity is inflated, and the flowmeter is arranged in the air cavity; when the detection air cavity leaks to the hydrogen cavity, aerify to the air cavity, the flowmeter sets up in the hydrogen cavity.
And if the detection type is a cavity leakage type to the atmosphere, simultaneously inflating a hydrogen cavity, a water cavity and an air cavity, and respectively monitoring the readings of the hydrogen cavity, the water cavity and the air cavity.
When the detection cavity body leaks to the atmosphere, the hydrogen cavity, the water cavity and the air cavity are simultaneously inflated, and the hydrogen cavity, the water cavity and the air cavity are respectively provided with a flowmeter.
The first preset time is preset, and in the application, the first preset time is 10 s.
As an alternative embodiment, it is determined whether the flow meter reading falls within the normal reading range within the first preset time by:
and if the reading of the flowmeter changes within a first preset time and the reading of the flowmeter does not exceed the preset measuring range of the flowmeter arranged in the corresponding cavity within the first preset time, determining that the reading of the flowmeter of the cavity to be measured is an airtight qualified reading.
Specifically, if the readings of the flow meter are continuously within 10s, the readings are changed, and all the readings within 10s do not exceed the preset measuring range of the flow meter arranged in the corresponding cavity to be measured, the readings of the flow meter of the cavity to be measured are determined to be airtight qualified readings, if the readings of the flow meter are continuously unchanged within 10s and are all larger than or equal to the preset measuring range of the flow meter arranged in the corresponding cavity to be measured, the readings of the flow meter of the cavity to be measured can be determined to be airtight unqualified readings, and after the readings of the flow meter of the cavity to be measured are determined to be airtight unqualified readings, the airtightness detection is stopped and recorded.
As an optional implementation manner, judging whether the reading of the flowmeter of the cavity to be measured meets the first preset condition, and if so, determining that the reading of the flowmeter is an airtight qualified reading; otherwise, determining that the flowmeter reading is not a hermetic qualified reading.
The first preset conditions corresponding to different detection types are different:
if the detection type comprises a leakage type between cavities and the leakage of the hydrogen cavity to the air cavity is detected, the first preset condition is that the reading of the flowmeter is detected to continuously decline within a second preset time and the reading of the flowmeter is detected to be smaller than a preset leakage standard value.
Specifically, the second preset time is preset, the second preset time in this application is 5s, and the preset leakage standard value is preset.
If the detection type comprises a leakage type between cavities, leakage of the hydrogen cavity and the air cavity to the water cavity is detected, or the detection type is a leakage type of the cavities to the atmosphere, the first preset condition is that the increment of the reading of the flowmeter is detected to be not more than a first preset value in unit time, and the detected reading of the flowmeter is smaller than a preset leakage standard value.
The first preset value is preset, and the first preset value in the application is 0.02.
If the detection type is a cavity leakage type to the atmosphere, the first preset condition is that the detected flowmeter readings continuously decline within a second preset time and the flowmeter readings are all smaller than a preset leakage standard value.
In general, when a hydrogen cavity in the process of leakage to the atmosphere of the detection cavity and leakage between the detection cavities leaks to the air cavity or the air cavity leaks to the hydrogen cavity, if the reading of the flowmeter continuously drops within 5s and the readings of the flowmeter are both smaller than a preset leakage standard value, the reading of the flowmeter is an airtight qualified reading; when the leakage of the hydrogen cavity and the air cavity to the water cavity is detected, if the increment of the reading of the flowmeter detected in unit time is not more than 0.02 and the readings of the flowmeter are all less than the preset leakage standard value, the reading of the flowmeter is the airtight qualified reading.
The application provides a fuel cell stack air tightness test method, whether the reading number of a flowmeter meets the standard is judged by comparing the test result with a relevant preset numerical value, if so, the detection test of the time is finished, for the leakage detection, the leakage test of a hydrogen cavity, an air cavity and a water cavity can be simultaneously detected, and for the leakage through two tests of hydrogen-empty-series water and empty-series hydrogen, the test time is saved; the method has the advantages that the inaccuracy of the test result caused by the instability of the equipment or the external environment is avoided, and the test accuracy is improved; the testing sequence is to test the leakage type between the cavities firstly and then to test the leakage type of the cavities to the atmosphere, so that the influence of unclean exhaust on the leakage type testing result between the cavities when the leakage type of the cavities to the atmosphere is tested is avoided.
Referring to fig. 3, a method for testing the fuel cell stack gas tightness is shown in a detailed flow chart when the method is applied to detecting the leakage of the hydrogen cavity to the air cavity, the leakage of the air cavity to the hydrogen cavity, or the leakage of the cavity to the atmosphere:
step 304, judging whether the readings of the flow meters continuously decrease within 5s and are all smaller than a preset leakage standard value, if so, executing step 305, and if not, executing step 301;
the flowmeter reading is a hermetic acceptable reading, step 305.
Referring to fig. 4, a method for testing the gas tightness of the fuel cell stack is shown in a detailed flowchart when the method is applied to detecting the leakage of the hydrogen chamber to the air chamber or the leakage of the air chamber to the hydrogen chamber:
step 402, inflating the cavity needing inflation corresponding to the detection type, and monitoring the reading of the flowmeter on the cavity to be detected corresponding to the detection type;
step 403, judging whether the reading of the flowmeter changes within 10s and whether the reading of the flowmeter exceeds the preset measuring range of the flowmeter arranged in the corresponding cavity to be measured within 10s, if so, executing step 404, and if not, executing step 406;
step 404, judging whether the increment of the meter reading in 5s in unit time is not more than 0.02 and is less than a preset leakage standard value, if so, executing step 405, and if not, executing step 401;
step 405, the flowmeter reading is an airtight qualified reading;
Example 2
Based on the same inventive concept, the present application also provides a fuel cell stack gas tightness testing apparatus, as shown in fig. 5, the apparatus including:
a determining module 501, configured to determine, in response to an air tightness detection instruction, a detection type indicated by the detection instruction;
a monitoring module 502, configured to inflate the cavity to be inflated corresponding to the detection type according to the detection type, and monitor a reading of a flow meter on the cavity to be tested corresponding to the detection type;
the judging module 503 is configured to judge whether the flowmeter reading of the cavity to be measured is an airtight qualified reading according to a first preset condition when the flowmeter reading belongs to a reading within a normal reading range within a first preset time;
if the detection type comprises a leakage type between cavities, the cavity needing to be inflated is a leaked cavity, and the cavity to be detected is a leaked cavity; if the detection type is a type that the cavity leaks to the atmosphere, the cavity needing to be inflated and the cavity to be detected are both cavities with leakage.
Optionally, the monitoring module 502 is specifically configured to:
if the detection type comprises a leakage type between the cavities and the leakage of the hydrogen cavity and the air cavity to the water cavity is detected, simultaneously inflating the hydrogen cavity and the air cavity and monitoring the reading of a flowmeter on the water cavity;
if the detection type comprises a leakage type between cavities and the detection hydrogen cavity leaks to the air cavity, inflating the hydrogen cavity and monitoring the reading of a flowmeter on the air cavity;
and if the detection type is a cavity leakage type to the atmosphere, simultaneously inflating a hydrogen cavity, a water cavity and an air cavity, and respectively monitoring the readings of the hydrogen cavity, the water cavity and the air cavity.
Optionally, the determining module 503 is specifically configured to:
judging whether the reading of the flowmeter of the cavity to be measured meets the first preset condition or not, and if so, determining that the reading of the flowmeter is an airtight qualified reading; otherwise, determining that the flowmeter reading is not an airtight qualified reading;
if the detection type comprises a leakage type between cavities and the detected hydrogen cavity leaks to the air cavity, the first preset condition is that the readings of the flowmeter continuously decline within a second preset time and the detected readings of the flowmeter are all smaller than a preset leakage standard value;
if the detection type comprises a leakage type between cavities, leakage of the hydrogen cavity and the air cavity to the water cavity is detected, or the detection type is a leakage type of the cavities to the atmosphere, the first preset condition is that the increment of the reading of the flowmeter detected in unit time is not larger than a first preset value, and the detected reading of the flowmeter is smaller than a preset leakage standard value;
if the detection type is a cavity leakage type to the atmosphere, the first preset condition is that the detected flowmeter readings continuously decline within a second preset time and the flowmeter readings are all smaller than a preset leakage standard value.
Optionally, the determining module 503 is specifically configured to: judging whether the reading of the flowmeter belongs to the reading in the normal reading range within a first preset time by the following steps:
and if the reading of the flowmeter changes within a first preset time and the reading of the flowmeter does not exceed a preset measuring range of the flowmeter arranged in the corresponding cavity to be measured within the first preset time, determining that the reading of the flowmeter of the cavity to be measured is an airtight qualified reading.
Optionally, the detection types include a leakage type between cavities and a cavity leakage type to the atmosphere.
Optionally, the determining module 501 is further configured to: firstly, detecting the leakage type between the cavities, and after the detection of the leakage type between the cavities is finished, detecting the leakage type of the cavities to the atmosphere.
Having described the fuel cell stack airtightness testing method and apparatus according to the exemplary embodiment of the present application, next, an electronic device according to another exemplary embodiment of the present application will be described.
As will be appreciated by one skilled in the art, aspects of the present application may be embodied as a system, method or program product. Accordingly, various aspects of the present application may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
In some possible embodiments, an electronic device according to the present application may include at least one processor, and at least one memory. Wherein the memory stores program code that, when executed by the processor, causes the processor to perform the steps of the fuel cell stack gas tightness testing method according to various exemplary embodiments of the present application described above in the present specification.
An electronic apparatus 130 according to this embodiment of the present application, that is, the fuel cell stack airtightness testing apparatus described above, is described below with reference to fig. 6. The electronic device 130 shown in fig. 6 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.
As shown in fig. 6, the electronic device 130 is represented in the form of a general electronic device. The components of the electronic device 130 may include, but are not limited to: the at least one processor 131, the at least one memory 132, and a bus 133 that connects the various system components (including the memory 132 and the processor 131).
Bus 133 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.
The memory 132 may include readable media in the form of volatile memory, such as Random Access Memory (RAM)1321 and/or cache memory 1322, and may further include Read Only Memory (ROM) 1323.
The electronic device 130 may also communicate with one or more external devices 134 (e.g., keyboard, pointing device, etc.), with one or more devices that enable a user to interact with the electronic device 130, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 130 to communicate with one or more other electronic devices. Such communication may occur via input/output (I/O) interfaces 135. Also, the electronic device 130 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 136. As shown, the network adapter 136 communicates with other modules for the electronic device 130 over the bus 133. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
In some possible embodiments, aspects of a fuel cell stack gas tightness testing method provided herein may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of a fuel cell stack gas tightness testing method according to various exemplary embodiments of the present application described above in this specification when the program product is run on the computer device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product for monitoring of the embodiments of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on an electronic device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the consumer electronic device, partly on the consumer device, as a stand-alone software package, partly on the consumer electronic device and partly on a remote electronic device, or entirely on the remote electronic device or server. In the case of remote electronic devices, the remote electronic devices may be connected to the consumer electronic device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to external electronic devices (e.g., through the internet using an internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, according to embodiments of the application. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.
Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and block diagrams, and combinations of flows and blocks in the flow diagrams and block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A fuel cell stack gas tightness test method, characterized in that the method comprises:
responding to an air tightness detection instruction, and determining a detection type indicated by the detection instruction;
according to the detection type, inflating the cavity which is required to be inflated and corresponds to the detection type, and monitoring the reading of the flowmeter on the cavity to be detected and corresponds to the detection type;
when the reading of the flowmeter belongs to the reading in the normal reading range within a first preset time, judging whether the reading of the flowmeter of the cavity to be detected is an airtight qualified reading or not according to a first preset condition;
if the detection type comprises a leakage type between cavities, the cavity needing to be inflated is a leaked cavity, and the cavity to be detected is a leaked cavity; if the detection type is a cavity leakage type to atmosphere, the cavity needing to be inflated and the cavity to be detected are both cavities with leakage.
2. The method according to claim 1, wherein the step of inflating the cavity to be inflated corresponding to the detection type according to the detection type and monitoring the reading of the flow meter on the cavity to be tested corresponding to the detection type comprises:
if the detection type comprises a leakage type between the cavities and the leakage of the hydrogen cavity and the air cavity to the water cavity is detected, simultaneously inflating the hydrogen cavity and the air cavity and monitoring the reading of a flowmeter on the water cavity;
if the detection type comprises a leakage type between cavities and the detection hydrogen cavity leaks to the air cavity, inflating the hydrogen cavity and monitoring the reading of a flowmeter on the air cavity;
and if the detection type is a cavity leakage type to the atmosphere, simultaneously inflating a hydrogen cavity, a water cavity and an air cavity, and respectively monitoring the readings of the hydrogen cavity, the water cavity and the air cavity.
3. The method of claim 2, wherein judging whether the flow meter reading of the chamber to be tested is a qualified airtight reading by a first preset condition comprises:
judging whether the reading of the flowmeter of the cavity to be measured meets the first preset condition or not, and if so, determining that the reading of the flowmeter is an airtight qualified reading; otherwise, determining that the flowmeter reading is not an airtight qualified reading;
if the detection type comprises a leakage type between cavities and the detected hydrogen cavity leaks to the air cavity, the first preset condition is that the readings of the flowmeter continuously decline within a second preset time and the detected readings of the flowmeter are all smaller than a preset leakage standard value;
if the detection type comprises a leakage type between cavities, leakage of the hydrogen cavity and the air cavity to the water cavity is detected, or the detection type is a leakage type of the cavities to the atmosphere, the first preset condition is that the increment of the reading of the flowmeter detected in unit time is not larger than a first preset value, and the detected reading of the flowmeter is smaller than a preset leakage standard value;
if the detection type is a cavity leakage type to the atmosphere, the first preset condition is that the detected flowmeter readings continuously decline within a second preset time and the flowmeter readings are all smaller than a preset leakage standard value.
4. The method of claim 1, wherein determining whether the flow meter reading falls within a normal reading range within a first predetermined time is performed by:
and if the reading of the flowmeter changes within a first preset time and the reading of the flowmeter does not exceed a preset measuring range of the flowmeter arranged in the corresponding cavity to be measured within the first preset time, determining that the reading of the flowmeter of the cavity to be measured is an airtight qualified reading.
5. The method of claim 1, wherein the detection types include a type of cavity-to-cavity leak and a type of cavity-to-atmosphere leak;
the method further comprises the following steps:
firstly, detecting the leakage type between the cavities, and after the detection of the leakage type between the cavities is finished, detecting the leakage type of the cavities to the atmosphere.
6. A fuel cell stack gas tightness testing device, characterized in that the device comprises:
the determining module is used for responding to an air tightness detection instruction and determining the detection type indicated by the detection instruction;
the monitoring module is used for inflating the cavity which is required to be inflated and corresponds to the detection type according to the detection type and monitoring the reading of the flow meter on the cavity to be detected and corresponds to the detection type;
the judging module is used for judging whether the reading of the flowmeter of the cavity to be detected is airtight qualified reading or not according to a first preset condition when the reading of the flowmeter belongs to the reading in a normal reading range within a first preset time;
if the detection type comprises a leakage type between cavities, the cavity needing to be inflated is a leaked cavity, and the cavity to be detected is a leaked cavity; if the detection type is a type that the cavity leaks to the atmosphere, the cavity needing to be inflated and the cavity to be detected are both cavities with leakage.
7. The apparatus of claim 6, wherein the monitoring module is specifically configured to:
if the detection type comprises a leakage type between the cavities and the leakage of the hydrogen cavity and the air cavity to the water cavity is detected, simultaneously inflating the hydrogen cavity and the air cavity and monitoring the reading of a flowmeter on the water cavity;
if the detection type comprises a leakage type between the cavities and the detection hydrogen cavity leaks to the air cavity, inflating the hydrogen cavity and monitoring the reading of a flowmeter on the air cavity;
and if the detection type is a cavity leakage type to the atmosphere, simultaneously inflating a hydrogen cavity, a water cavity and an air cavity, and respectively monitoring the readings of the hydrogen cavity, the water cavity and the air cavity.
8. The apparatus of claim 7, wherein the determining module is specifically configured to:
judging whether the reading of the flowmeter of the cavity to be measured meets the first preset condition or not, and if so, determining that the reading of the flowmeter is an airtight qualified reading; otherwise, determining that the flowmeter reading is not an airtight qualified reading;
if the detection type comprises a leakage type between cavities and the detected hydrogen cavity leaks to the air cavity, the first preset condition is that the readings of the flowmeter continuously decline within a second preset time and the detected readings of the flowmeter are all smaller than a preset leakage standard value;
if the detection type comprises a leakage type between cavities, leakage of the hydrogen cavity and the air cavity to the water cavity is detected, or the detection type is a leakage type of the cavities to the atmosphere, the first preset condition is that the increment of the reading of the flowmeter detected in unit time is not larger than a first preset value, and the detected reading of the flowmeter is smaller than a preset leakage standard value;
if the detection type is a cavity leakage type to the atmosphere, the first preset condition is that the detected flowmeter readings continuously decline within a second preset time and the flowmeter readings are all smaller than a preset leakage standard value.
9. An electronic device comprising at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.
10. A computer storage medium, characterized in that the computer storage medium stores a computer program for causing a computer to perform the method according to any one of claims 1-5.
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| CN202210699736.7A CN115127749A (en) | 2022-06-20 | 2022-06-20 | Fuel cell stack airtightness testing method and device and electronic equipment |
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| CN202210699736.7A CN115127749A (en) | 2022-06-20 | 2022-06-20 | Fuel cell stack airtightness testing method and device and electronic equipment |
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| US20030022044A1 (en) * | 2001-07-26 | 2003-01-30 | Honda Giken Kogyo Kabushiki Kaisha | Gas leak detection method for fuel cell |
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| CN113884253A (en) * | 2021-09-30 | 2022-01-04 | 潍柴巴拉德氢能科技有限公司 | Air tightness detection method, equipment and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030022044A1 (en) * | 2001-07-26 | 2003-01-30 | Honda Giken Kogyo Kabushiki Kaisha | Gas leak detection method for fuel cell |
| CN106840547A (en) * | 2017-03-30 | 2017-06-13 | 杭州电子科技大学 | A kind of batteries of electric automobile bag air-tightness detection device and detection method |
| CN111579173A (en) * | 2020-05-21 | 2020-08-25 | 东风汽车集团有限公司 | Automatic detection equipment and detection method for three-cavity pressure maintaining air tightness of fuel cell system |
| CN113884253A (en) * | 2021-09-30 | 2022-01-04 | 潍柴巴拉德氢能科技有限公司 | Air tightness detection method, equipment and system |
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