CN116380211A - Method and device for testing effective hydrogen storage capacity of vehicle-mounted hydrogen system - Google Patents
Method and device for testing effective hydrogen storage capacity of vehicle-mounted hydrogen system Download PDFInfo
- Publication number
- CN116380211A CN116380211A CN202310246591.XA CN202310246591A CN116380211A CN 116380211 A CN116380211 A CN 116380211A CN 202310246591 A CN202310246591 A CN 202310246591A CN 116380211 A CN116380211 A CN 116380211A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- vehicle
- test
- pressure
- hydrogen storage
- 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.)
- Pending
Links
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 355
- 239000001257 hydrogen Substances 0.000 title claims abstract description 345
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 345
- 238000012360 testing method Methods 0.000 title claims abstract description 101
- 238000000034 method Methods 0.000 title claims abstract description 46
- 230000001502 supplementing effect Effects 0.000 claims abstract description 29
- 230000007613 environmental effect Effects 0.000 claims abstract description 9
- 238000005984 hydrogenation reaction Methods 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 16
- 239000000446 fuel Substances 0.000 claims description 14
- 238000010998 test method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 4
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 2
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a method and a device for testing the effective hydrogen storage capacity of a vehicle-mounted hydrogen system, wherein the method comprises the steps of connecting the vehicle-mounted hydrogen system with a hydrogen supplementing device; collecting the environmental temperature data of the vehicle to obtain the full hydrogen target pressure of the vehicle; according to the full hydrogen target pressure of the vehicle, applying a hydrogen supplementing device to hydrogenate the tested vehicle to obtain the actual pressure of the vehicle-mounted hydrogen storage bottle; determining whether the hydrogen storage bottle reaches a full hydrogen state according to the ambient temperature, the full hydrogen target pressure and the actual pressure difference of the hydrogen storage bottle, and obtaining the hydrogen quality carried by the vehicle before the test; performing hydrogen consumption operation on the test vehicle; after the operation is finished, filling a small amount of hydrogen by using a hydrogen supplementing device to obtain the mass of the hydrogen carried by the vehicle at the moment; and according to the quality of the hydrogen carried by the vehicles before and after the test, further obtaining the effective hydrogen storage capacity of the vehicle-mounted hydrogen system. The testing method and the testing device are beneficial to analyzing the effective hydrogen storage capacity information of the vehicle-mounted hydrogen system, and further accurately judging the performance rule of the whole vehicle.
Description
Technical Field
The invention relates to the technical field of testing of vehicle-mounted hydrogen systems of fuel cell automobiles, in particular to a method and a device for testing effective hydrogen storage capacity of a vehicle-mounted hydrogen system.
Background
The fuel cell automobile is an automobile powered by electric power generated by an on-board fuel cell device and is mainly characterized by using high-purity hydrogen as fuel. The development of fuel cell automobiles currently shows a trend of accelerating development, and the hydrogen storage capacity of a vehicle-mounted hydrogen system is a specific representation of the hydrogen filling State (SOC) of the fuel cell automobiles, is an important basis of a safety management strategy, and is an important index for evaluating the performance of the fuel cell automobiles.
However, the high-pressure hydrogen gas in the in-vehicle hydrogen system cannot be used as the hydrogen gas supply after the pressure is lower than a certain threshold value, and it is difficult to determine the residual hydrogen amount in the hydrogen storage tank. The effective hydrogen storage capacity of the vehicle-mounted hydrogen system is difficult to detect at the present stage, and accurate assessment and prediction of parameters such as the driving range and the energy consumption of the test vehicle are difficult to carry out. This would cause difficulties in commercialization and practical popularization of fuel cell vehicles.
Disclosure of Invention
The invention aims at solving the problems that the effective hydrogen storage amount of the existing vehicle-mounted hydrogen system is difficult to accurately measure in the prior art, and is unfavorable for evaluation and prediction of parameters such as the driving range, the energy consumption and the like of a fuel cell vehicle, and provides a method for testing the effective hydrogen storage amount of the vehicle-mounted hydrogen system.
Another object of the invention is to provide a testing device based on the testing method.
The technical scheme adopted for realizing the purpose of the invention is as follows:
a method for testing the effective hydrogen storage capacity of a vehicle-mounted hydrogen system comprises the following steps:
step 1, connecting a vehicle-mounted hydrogen system of a fuel cell automobile with a hydrogen supplementing device;
step 2, collecting the environmental temperature data of the tested vehicle to obtain the hydrogen-filled target pressure of the vehicle;
step 3, according to the vehicle hydrogen filling target pressure obtained in the step 2, applying the hydrogen supplementing device to hydrogenate a test vehicle to obtain the actual pressure of the vehicle-mounted hydrogen storage bottle;
step 4, according to the environmental temperature, the target pressure of the full hydrogen of the vehicle and the actual pressure difference of the hydrogen storage bottle, enabling the hydrogen storage bottle to reach a full hydrogen state, and obtaining the quality of the hydrogen carried by the vehicle before the test;
step 5, carrying out a hydrogen consumption test on the test vehicle or driving on the road to a vehicle-mounted instrument to give a parking instruction;
step 6, after the test in the step 5 is finished, filling hydrogen by using the hydrogen supplementing device, wherein the hydrogen mass is not more than 0.1kg, and obtaining the hydrogen mass carried by the tested vehicle;
and 7, obtaining the effective hydrogen storage capacity of the vehicle-mounted hydrogen system according to the hydrogen quality carried by the vehicles before and after the test.
In the above technical solution, the hydrogen-full target pressure of the vehicle in step 2 is obtained by the following method: measuring the ambient temperature T of the vehicle 1 The method comprises the steps of carrying out a first treatment on the surface of the Then the hydrogen compression factor is calculated according to the temperature-pressure method and the hydrogen compression factor is calculated at the ambient temperature T 1 Target pressure P of full hydrogen 1 Wherein the temperature-pressure process is shown in appendix A of GB/T35178-2017.
In the above technical scheme, the hydrogen filling target pressure of the vehicle-mounted hydrogen system is 100% of the SOC of the vehicle-mounted hydrogen storage bottle, wherein the SOC is obtained by the following formula:
where ρ (P, T) is the density of hydrogen at temperature T and pressure P; ρ (NWP, 15 ℃) is the density of hydrogen at 15 ℃ and the nominal operating pressure of the gas cylinder (NWP).
In the technical scheme, the hydrogen supplementing device is respectively communicated with a hydrogen gas source and a vehicle-mounted hydrogen system, and the hydrogen gas source comprises at least two high-pressure hydrogen cylinders;
the hydrogen supplementing device at least comprises one or more of pressurizing equipment, a buffer tank, a mass flowmeter, a pneumatic stop valve, a gas pressure measuring device, a hydrogenation gun and a hydrogen pipeline.
In the technical scheme, the actual pressure of the vehicle-mounted hydrogen storage bottle is obtained by the following method:
a1, opening the pneumatic stop valve and starting the supercharging equipment;
step A2, supplementing hydrogen to the test vehicle until the pressure of the vehicle-mounted hydrogen storage bottle reaches the ambient temperature T 1 A lower hydrogen-full target pressure P1;
a3, closing the pressurizing equipment, and keeping the pneumatic stop valve in an open state;
step A4, monitoring and recording the pressure of the vehicle-mounted hydrogen storage bottle in real time;
step A5, after the vehicle-mounted hydrogen storage bottle is cooled to room temperature, recording the ambient temperature T 2 And the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 ′。
In the above technical solution, the hydrogen mass carried by the vehicle before the test is obtained by the following method:
step B1, according to the temperature-pressure method and the environmental temperature T when the hydrogen storage bottle is cooled to the room temperature after hydrogenation 2 Calculating at ambient temperature T 2 Target pressure P of full hydrogen 2 ；
Step B2, calculating the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 ' sum hydrogen target pressure P 2 Judging the state of the hydrogen storage bottle according to the judgment strategy of the hydrogenation state of the hydrogen storage bottle if the delta P is within two hours (containingTwo hours) can be kept below 0.3Mpa (containing 0.3 Mpa), the vehicle-mounted hydrogen storage bottle is considered to reach a full hydrogen state, and hydrogenation is finished; if the delta P is higher than 0.3MPa within two hours (including two hours), the vehicle-mounted hydrogen storage bottle is considered to not reach a full hydrogen state, and the hydrogen supplementing device is applied to continuously hydrogenate the test vehicle until the delta P can be kept below 0.3MPa (including 0.3 MPa) within two hours (including two hours);
step B3, closing the pneumatic stop valve to finish hydrogenation after the vehicle-mounted hydrogen storage bottle reaches a full hydrogen state;
step B4, according to the ambient temperature T when the hydrogen storage bottle is cooled to room temperature after hydrogenation 2 Said ambient temperature T 2 The hydrogen full target pressure P2 is used for calculating the hydrogen mass m carried by the vehicle before the test through the temperature-pressure method 1 。
In the above technical scheme, the hydrogen mass carried by the vehicle after the test is obtained by the following method:
step C1, connecting the vehicle to the hydrogen supplementing device, and recording the environment temperature T of the vehicle 3 ；
Step C2, opening the pneumatic stop valve, filling hydrogen into the vehicle through the buffer tank, and recording the filled hydrogen mass m through the mass flowmeter 2 ；
Step C3, closing the pneumatic stop valve, and recording the indication P of the gas pressure measuring device after the pressure is balanced 3 Wherein P is 3 The internal pressure of the vehicle-mounted hydrogen storage bottle is set;
step C4, according to the environment temperature T of the vehicle 3 Internal pressure P of vehicle-mounted hydrogen storage bottle 3 By the temperature-pressure method, the mass m of the hydrogen carried by the vehicle at the moment is calculated 3 。
In the technical scheme, the effective hydrogen storage capacity of the vehicle-mounted hydrogen system is obtained by the following method:
according to the mass m of the hydrogen carried by the vehicle before the test 1 Mass m of hydrogen gas charged 2 Hydrogen mass m carried by vehicle after filling 3 Calculating to obtain the quality of the hydrogen consumed by the test; the hydrogen quality consumed by the test is the effective hydrogen storage of the vehicle-mounted hydrogen systemStock m TH ；
Wherein, the effective hydrogen storage capacity m of the vehicle-mounted hydrogen system TH The calculation formula is as follows:
m TH ＝m 1 +m 2 -m 3 。
in the above technical scheme, the hydrogen consumption test in step 5 is to select a corresponding test working condition according to the national standard to perform a driving range test or to drive on the road to the vehicle-mounted instrument to give a parking instruction.
In another aspect of the present invention, a device for testing the effective hydrogen storage capacity of an on-board hydrogen system is provided, where the device includes at least one processor and a memory communicatively connected to the processor, where the memory stores instructions executable by the processor to cause the processor to perform the method for testing the effective hydrogen storage capacity of an on-board hydrogen system.
Compared with the prior art, the invention has the beneficial effects that:
1. the judgment strategy of the hydrogenation state of the hydrogen storage bottle considers the influence of the gas temperature rise caused by high-pressure gas on the hydrogenation accuracy during hydrogenation, can realize that the actual pressure of the vehicle-mounted hydrogen storage bottle is at full hydrogen pressure, solves the test error caused by the difference between the actual hydrogen storage amount and the standard hydrogen storage amount, and is beneficial to more accurately controlling the hydrogen amount in the vehicle-mounted hydrogen system; according to the method for calculating the hydrogen quality and the hydrogen pressure of the vehicle-mounted hydrogen storage bottle after the test is finished, the characteristic that the indication of the pressure measuring device is the hydrogen pressure after the test when a small amount of hydrogen is filled into the buffer tank is adopted, so that the residual hydrogen quantity of the hydrogen storage bottle after the test is obtained, and the accurate obtaining of the hydrogen residual quantity in the hydrogen system is facilitated; the invention has convenient application, does not need to change the existing hydrogen supplementing device, and can obtain the effective hydrogen storage capacity of the vehicle-mounted hydrogen system by only adding a small amount of hydrogen after testing.
2. According to the invention, the vehicle-mounted hydrogen system and the hydrogen supplementing device are utilized to hydrogenate the fuel cell automobile, the vehicle-mounted hydrogen storage bottle is enabled to reach a full hydrogen state according to factors such as the ambient temperature before and after hydrogenation, the pressure of the vehicle-mounted hydrogen storage bottle, the full hydrogen target pressure and the like, then the hydrogen consumption test is carried out on the automobile, the hydrogen residual quantity of the vehicle-mounted hydrogen storage bottle is detected, finally the effective hydrogen storage quantity of the vehicle-mounted hydrogen system is obtained according to the detection result through the actual hydrogen consumption before and after the test, the analysis of the actual hydrogen storage quantity information of the automobile is facilitated, the overall automobile performance rule is accurately judged, and the accurate evaluation and prediction of the driving mileage and the energy consumption of the tested automobile are facilitated.
3. According to the invention, the judgment strategy of the hydrogenation state of the hydrogen storage bottle is constructed through the hydrogen filling target pressure and the actual pressure difference of the hydrogen storage bottle, the influence of the gas temperature rise caused by high-pressure gas on the hydrogenation accuracy during hydrogenation is fully considered, and the method is beneficial to more accurately controlling the hydrogen quantity in the vehicle-mounted hydrogen storage bottle before testing.
4. According to the invention, the internal pressure of the vehicle-mounted hydrogen storage bottle is obtained by testing the quality of hydrogen carried by vehicles before and after the test and by using the method of filling hydrogen, the effective hydrogen storage capacity of the vehicle-mounted hydrogen system is calculated and obtained, meanwhile, the influence of the quality of filling hydrogen on the quality of hydrogen consumed by the calculation test is considered, and the method is favorable for more accurately controlling the hydrogen quantity in the vehicle-mounted hydrogen storage bottle after the test.
5. The testing method and the testing device are beneficial to analyzing the effective hydrogen storage capacity information of the vehicle-mounted hydrogen system, further accurately judging the performance rule of the whole vehicle, and facilitating assessment of the driving range and the energy consumption of the vehicle to obtain accurate vehicle fuel economy parameter information.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for testing the effective hydrogen storage capacity of a vehicle-mounted hydrogen system according to the present invention;
FIG. 2 is a schematic diagram of a model construction of a hydrogen replenishment device according to the present invention;
FIG. 3 is a flow chart of a model of pre-test hydrogenation of a vehicle in accordance with the present invention;
fig. 4 is a schematic structural diagram of a test device for the effective hydrogen storage amount of the vehicle-mounted hydrogen system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the method for testing the effective hydrogen storage capacity of the vehicle-mounted hydrogen system specifically comprises the following steps:
and step 1, connecting a vehicle-mounted hydrogen system with a hydrogen supplementing device.
Specifically, the hydrogen gas source is connected with a vehicle-mounted hydrogen system through the hydrogen supplementing device; wherein, the hydrogen supplementing device at least comprises any one or more of the following: supercharging equipment, buffer tank, mass flowmeter and pneumatic stop valve V 1 The device comprises a gas pressure measuring device, a hydrogenation gun and a hydrogen pipeline; the hydrogen source consists of a plurality of high-pressure hydrogen cylinders.
In one embodiment, fig. 2 is a schematic diagram of a model construction of a hydrogen supplementing device according to an embodiment of the present invention, as shown in fig. 2, a hydrogen source is first connected to a pressurizing device of the hydrogen supplementing device, and then a hydrogenation gun of the hydrogen supplementing device is connected to a vehicle-mounted hydrogen system.
And 2, collecting the environmental temperature data of the vehicle to obtain the hydrogen-filled target pressure of the vehicle.
Specifically, the ambient temperature T at which the vehicle is located is measured 1 The method comprises the steps of carrying out a first treatment on the surface of the Then the hydrogen compression factor is calculated according to the temperature-pressure method and the hydrogen compression factor is calculated at the ambient temperature T 1 Target pressure P of full hydrogen 1 Wherein the temperature-pressure process is shown in appendix A of GB/T35178-2017.
In the above technical scheme, the hydrogen filling target pressure of the vehicle-mounted hydrogen system is 100% of the SOC of the vehicle-mounted hydrogen storage bottle, wherein the SOC is obtained by the following formula:
where ρ (P, T) is the density of hydrogen at temperature T and pressure P; ρ (NWP, 15 ℃) is the density of hydrogen at 15 ℃ and the nominal operating pressure of the gas cylinder (NWP). Wherein the temperature and pressure process is shown in appendix A of GB/T35178-2017.
As a possible implementation, to ensure that the on-board hydrogen storage bottle reaches a full hydrogen state, the full hydrogen target pressure at the current ambient temperature must be evaluated before it is hydrogenated. According to the temperature-pressure method provided by GB/T35178-2017, the hydrogen compression factor can be calculated under the condition of known ambient temperature, and then the full hydrogen target pressure at the current ambient temperature can be checked, so that accurate assessment of the full hydrogen target pressure is realized.
And 3, hydrogenating the test vehicle by using a hydrogen supplementing device according to the hydrogen filling target pressure of the vehicle to obtain the actual pressure of the vehicle-mounted hydrogen storage bottle.
Specifically, the actual pressure of the vehicle-mounted hydrogen storage bottle is obtained by the following method:
step A1, opening the pneumatic stop valve V1 and starting the supercharging equipment;
step A2, supplementing hydrogen to the test vehicle until the pressure of the vehicle-mounted hydrogen storage bottle reaches the ambient temperature T 1 A lower hydrogen-full target pressure P1;
a3, closing the pressurizing equipment, and keeping the pneumatic stop valve V1 in an open state;
step A4, monitoring and recording the pressure of the vehicle-mounted hydrogen storage bottle in real time;
step A5, after the vehicle-mounted hydrogen storage bottle is cooled to room temperature, recording the ambient temperature T 2 And the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 ′。
As a possible implementation, after the supercharging device is turned on, the vehicle-mounted hydrogen storage bottle can be hydrogenated to the target pressure through the buffer tank by utilizing the gas pressure difference. Closing the supercharging device and maintaining the pneumatic shut-off valve V 1 The hydrogen pressure in the buffer tank is the same as that in the vehicle-mounted hydrogen storage bottle, so that the hydrogen in the vehicle-mounted hydrogen storage bottle can be conveniently tested after the driving mileage is testedAnd (5) detecting the allowance.
And step 4, determining whether the hydrogen storage bottle reaches a full hydrogen state according to the ambient temperature, the full hydrogen target pressure and the actual pressure difference of the hydrogen storage bottle, and obtaining the hydrogen quality carried by the vehicle before the test.
Specifically, in the step B1, according to the temperature-pressure method and the environmental temperature T when the hydrogen storage bottle is cooled to room temperature after hydrogenation 2 Calculating at ambient temperature T 2 Target pressure P of full hydrogen 2 ；
Step B2, calculating the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 ' sum hydrogen target pressure P 2 According to the judgment strategy of the hydrogenation state of the hydrogen storage bottle;
step B3, closing the pneumatic stop valve to finish hydrogenation after the vehicle-mounted hydrogen storage bottle reaches a full hydrogen state;
step B4, according to the ambient temperature T when the hydrogen storage bottle is cooled to room temperature after hydrogenation 2 Said ambient temperature T 2 Target pressure P of full hydrogen 2 By the temperature-pressure method, the mass m of the hydrogen carried by the vehicle before the test is calculated 1 。
Further, in an embodiment, fig. 3 is a flow chart of a model of hydrogenation before testing a vehicle according to an embodiment of the present invention, as shown in fig. 3, where the vehicle-mounted hydrogen system obtains an ambient temperature T 2 And the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 After' the vehicle-mounted hydrogen storage bottle is considered to reach a full hydrogen state if the delta P can be kept below 0.3Mpa (containing 0.3 Mpa) within two hours (containing two hours); if the delta P is higher than 0.3MPa within two hours (including two hours), the vehicle-mounted hydrogen storage bottle is considered to not reach a full hydrogen state, and the hydrogen supplementing device is applied to continuously hydrogenate the test vehicle until the delta P can be kept below 0.3MPa (including 0.3 MPa) within two hours (including two hours).
As a feasible implementation mode, the judgment strategy of the hydrogenation state of the hydrogen storage bottle considers the influence of the gas temperature rise caused by high-pressure gas on the hydrogenation accuracy during hydrogenation, and the method of multiple hydrogen supplementation is utilized to ensure the hydrogen amount in the vehicle-mounted hydrogen storage bottle before testing.
And 5, performing a hydrogen consumption test on the test vehicle or driving on the road to a vehicle-mounted instrument to give a parking instruction.
Specifically, the hydrogen consumption test can select corresponding test working conditions according to national standards to carry out driving mileage test, and can also drive on the road to the vehicle-mounted instrument to give a parking instruction. Wherein, the external power supply is not used for charging the vehicle in the test process.
As a possible implementation mode, the vehicle is fixed on a chassis dynamometer for testing, sampling is performed from the starting of the whole vehicle until the testing is finished, and the sampling frequency is not lower than 5Hz.
And 6, after the test is finished, filling a small amount of hydrogen by using a hydrogen supplementing device to obtain the hydrogen carried by the tested vehicle.
Specifically, the hydrogen gas carried by the vehicle after the test is obtained by the following method:
step C1, connecting the vehicle to the hydrogen supplementing device, and recording the environment temperature T of the vehicle 3 ；
Step C2, opening the pneumatic stop valve, filling hydrogen into the vehicle through the buffer tank, and recording the filled hydrogen mass m through the mass flowmeter 2 ；
Step C3, closing the pneumatic stop valve, and recording the indication P of the gas pressure measuring device after the pressure is balanced 3 Wherein P is 3 The internal pressure of the vehicle-mounted hydrogen storage bottle is set;
step C4, according to the environment temperature T of the vehicle 3 Internal pressure P of vehicle-mounted hydrogen storage bottle 3 By the temperature-pressure method, the mass m of the hydrogen carried by the vehicle at the moment is calculated 3
And 7, obtaining the effective hydrogen storage capacity of the vehicle-mounted hydrogen system according to the hydrogen quality carried by the vehicles before and after the test.
Specifically, according to the hydrogen mass m carried by the vehicle before the test 1 Mass m of hydrogen gas charged 2 Hydrogen mass m carried by vehicle after filling 3 Calculating to obtain the effective hydrogen storage capacity of the vehicle-mounted hydrogen system; the hydrogen quality consumed by the test is the effective hydrogen storage capacity m of the vehicle-mounted hydrogen system TH The method comprises the steps of carrying out a first treatment on the surface of the Wherein, the effective hydrogen storage capacity m of the vehicle-mounted hydrogen system TH The calculation formula is as follows:
m TH ＝m 1 +m 2 -m 3
as a feasible implementation mode, the internal pressure of the vehicle-mounted hydrogen storage bottle is obtained by testing the quality of hydrogen carried by vehicles before and after the test and by using a method of filling hydrogen, the effective hydrogen storage capacity of the vehicle-mounted hydrogen system is calculated, meanwhile, the influence of the quality of filled hydrogen on the quality of hydrogen consumed by the calculation test is considered, and the method is favorable for more accurately controlling the hydrogen quantity in the vehicle-mounted hydrogen storage bottle after the test.
In addition, the embodiment of the application also provides a testing device for the effective hydrogen storage capacity of the vehicle-mounted hydrogen system, as shown in fig. 4, the testing device for the actual hydrogen consumption of the fuel cell automobile specifically comprises:
at least one processor 401, and a memory 402 communicatively coupled to the at least one processor 401. Wherein the memory 402 stores instructions executable by the processor 401 to enable the processor 401 to perform the test method of the present invention
The testing method and the testing device are beneficial to analyzing the effective hydrogen storage capacity information of the vehicle-mounted hydrogen system, accurately judging the performance rule of the whole vehicle, facilitating the assessment of the driving range of the vehicle and further obtaining accurate driving range information.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The method for testing the effective hydrogen storage capacity of the vehicle-mounted hydrogen system is characterized by comprising the following steps of:
step 1, connecting a vehicle-mounted hydrogen system of a fuel cell automobile with a hydrogen supplementing device;
step 2, collecting the environmental temperature data of the tested vehicle to obtain the hydrogen-filled target pressure of the vehicle;
step 3, according to the vehicle hydrogen filling target pressure obtained in the step 2, applying the hydrogen supplementing device to hydrogenate a test vehicle to obtain the actual pressure of the vehicle-mounted hydrogen storage bottle;
step 4, according to the environmental temperature, the target pressure of the full hydrogen of the vehicle and the actual pressure difference of the hydrogen storage bottle, enabling the hydrogen storage bottle to reach a full hydrogen state, and obtaining the quality of the hydrogen carried by the vehicle before the test;
step 5, carrying out a hydrogen consumption test on the test vehicle or driving on the road to a vehicle-mounted instrument to give a parking instruction;
step 6, after the step 5 is finished, filling hydrogen by using the hydrogen filling device, wherein the mass of the filled hydrogen is not more than 0.1kg, and the mass of the hydrogen carried by the vehicle after the test is obtained;
and 7, obtaining the effective hydrogen storage capacity of the vehicle-mounted hydrogen system according to the hydrogen quality carried by the vehicles before and after the test.
2. The test method according to claim 1, wherein the hydrogen-filled target pressure of the vehicle in step 2 is obtained by: measuring the ambient temperature T1 of the vehicle; the hydrogen compression factor and the hydrogen-full target pressure P1 at ambient temperature T1 are then calculated according to the temperature-pressure method.
3. The test method of claim 2, wherein the on-board hydrogen system hydrogen-full target pressure is up to 100% on-board hydrogen storage bottle SOC, wherein SOC is derived by the following equation:
where ρ (P, T) is the density of hydrogen at temperature T and pressure P; ρ (NWP, 15 ℃) is the density of hydrogen at 15 ℃ and the nominal operating pressure of the gas cylinder (NWP).
4. The test method of claim 2, wherein the hydrogen replenishment device is in communication with a hydrogen gas source and a vehicle-mounted hydrogen system, respectively, the hydrogen gas source comprising at least one high-pressure hydrogen cylinder;
the hydrogen supplementing device at least comprises one or more of pressurizing equipment, a buffer tank, a mass flowmeter, a pneumatic stop valve, a gas pressure measuring device, a hydrogenation gun and a hydrogen pipeline.
5. The testing method of claim 4, wherein the actual pressure of the on-board hydrogen storage bottle is obtained by:
a1, opening the pneumatic stop valve and starting the supercharging equipment;
step A2, supplementing hydrogen to the test vehicle until the pressure of the vehicle-mounted hydrogen storage bottle reaches the ambient temperature T 1 Target pressure P of full hydrogen 1 ；
A3, closing the pressurizing equipment, and keeping the pneumatic stop valve in an open state;
step A4, monitoring and recording the pressure of the vehicle-mounted hydrogen storage bottle in real time;
step A5, after the vehicle-mounted hydrogen storage bottle is cooled to room temperature, recording the ambient temperature T 2 And the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 ′。
6. The test method according to claim 5, wherein the hydrogen gas mass carried by the pre-test vehicle is obtained by:
step B1, according to the temperature-pressure method and the environmental temperature T when the hydrogen storage bottle is cooled to the room temperature after hydrogenation 2 Calculating at ambient temperature T 2 Target pressure P of full hydrogen 2 ；
Step B2, calculating the actual pressure P of the vehicle-mounted hydrogen storage bottle 2 ' sum hydrogen target pressure P 2 According to the judgment strategy of the hydrogenation state of the hydrogen storage bottle;
step B3, closing the pneumatic stop valve to finish hydrogenation after the vehicle-mounted hydrogen storage bottle reaches a full hydrogen state;
step B4, according to the ambient temperature T when the hydrogen storage bottle is cooled to room temperature after hydrogenation 2 Said ambient temperature T 2 Target pressure of full hydrogenForce P 2 By the temperature-pressure method, the mass m of the hydrogen carried by the vehicle before the test is calculated 1 。
7. The test method of claim 6, wherein the mass of hydrogen carried by the vehicle after the test is obtained by:
step C1, connecting the vehicle to the hydrogen supplementing device, and recording the environment temperature T of the vehicle 3 ；
Step C2, opening the pneumatic stop valve, filling hydrogen into the vehicle through the buffer tank, and recording the filled hydrogen mass m through the mass flowmeter 2 ；
Step C3, closing the pneumatic stop valve, and recording the indication P of the gas pressure measuring device after the pressure is balanced 3 Wherein P is 3 The internal pressure of the vehicle-mounted hydrogen storage bottle is set;
step C4, according to the environment temperature T of the vehicle 3 Internal pressure P of vehicle-mounted hydrogen storage bottle 3 By the temperature-pressure method, the mass m of the hydrogen carried by the vehicle at the moment is calculated 3 。
8. The testing method of claim 7, wherein the effective hydrogen storage capacity of the on-board hydrogen system is obtained by:
according to the mass m of the hydrogen carried by the vehicle before the test 1 Mass m of hydrogen gas charged 2 Hydrogen mass m carried by vehicle after filling 3 Calculating to obtain the quality of the hydrogen consumed by the test; the hydrogen quality consumed by the test is the effective hydrogen storage capacity m of the vehicle-mounted hydrogen system TH ；
Wherein, the effective hydrogen storage capacity m of the vehicle-mounted hydrogen system TH The calculation formula is as follows:
m TH ＝m 1 +m 2 -m 3 。
9. the test method according to claim 1, wherein the hydrogen consumption test in step 5 is to select a corresponding test condition according to a national standard to perform a driving range test or to drive on a road to a vehicle-mounted instrument to give a parking instruction.
10. A device for testing the effective hydrogen storage capacity of a vehicle-mounted hydrogen system, comprising at least one processor and a memory in communication with the processor, the memory storing instructions executable by the processor to cause the processor to perform the method for testing the effective hydrogen storage capacity of a vehicle-mounted hydrogen system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310246591.XA CN116380211A (en) | 2023-03-14 | 2023-03-14 | Method and device for testing effective hydrogen storage capacity of vehicle-mounted hydrogen system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310246591.XA CN116380211A (en) | 2023-03-14 | 2023-03-14 | Method and device for testing effective hydrogen storage capacity of vehicle-mounted hydrogen system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116380211A true CN116380211A (en) | 2023-07-04 |
Family
ID=86970400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310246591.XA Pending CN116380211A (en) | 2023-03-14 | 2023-03-14 | Method and device for testing effective hydrogen storage capacity of vehicle-mounted hydrogen system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116380211A (en) |
-
2023
- 2023-03-14 CN CN202310246591.XA patent/CN116380211A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111806446B (en) | Driving range evaluation method and system for fuel cell hybrid electric vehicle | |
| JP6600430B1 (en) | Inspection device for hydrogen gas dispenser | |
| CN103713262A (en) | System and method for calculating distance to empty of green vehicle | |
| CN107247234B (en) | SOC real-time online estimation method and system for vehicle power battery | |
| CN109425835A (en) | A kind of battery life, the vehicle performance test method and system based on big data | |
| CN105387339A (en) | CNG field calibrating device, system and method | |
| CN106154166A (en) | The on-line measuring device of a kind of flexible packing lithium ion battery flatulence amount and detection method | |
| CN117074036A (en) | Fuel consumption test method for heavy hydrogen fuel internal combustion engine automobile based on hydrogen balance method | |
| CN113619396B (en) | Driving range and energy consumption testing method and device for electric automobile | |
| CN114400353A (en) | Vehicle-mounted hydrogen system part verification device | |
| CN116380211A (en) | Method and device for testing effective hydrogen storage capacity of vehicle-mounted hydrogen system | |
| Hao et al. | An improved test method for energy consumption and range of fuel cell vehicles | |
| KR20190026701A (en) | Vehicle control unit automatic control device for measuring energy consumption efficiency of electric vehicle | |
| CN106643946B (en) | CNG fuel city bus fuel consumption detection system and method | |
| CN101226073A (en) | System for measuring gas automotive fuel wastage | |
| CN108963368B (en) | Flow testing method and device for thermal management pipeline of power battery of electric automobile | |
| CN110470991A (en) | A kind of power battery cycle life evaluating method | |
| CN115388325B (en) | Method and device for measuring hydrogenation and residual pressure of hydrogen fuel cell vehicle | |
| Zacharof et al. | A Methodology for Monitoring On-Road CO 2 Emissions Compliance in Passenger Vehicles | |
| RU91178U1 (en) | GAS MOTOR FUEL ANALYSIS MOBILE LABORATORY | |
| CN118088925B (en) | Vehicle-mounted high-pressure hydrogen storage system health degree diagnosis method, control method and device | |
| CN113240320B (en) | Power distribution strategy evaluation method and device for hydrogen fuel vehicle | |
| CN109470487A (en) | SUC performance detecting system and its method | |
| Koshika et al. | Validation of Test Procedure for Measuring the Fuel Consumption of Production-Model FCVs | |
| KR20140031359A (en) | Method for providing ecological driving index |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |