Fuel cell vehicle hydrogen consumption test method and system based on test bench

Abstract

The invention relates to a fuel cell vehicle hydrogen consumption test method and system based on a test bench, and the method comprises the steps: selecting a working condition road spectrum according to the vehicle type of a to-be-tested fuel cell vehicle when the test bench receives an operation starting instruction; based on the working condition road spectrum, SOC change data, instantaneous running speed and total hydrogen consumption of the fuel cell vehicle are collected through a test bed; according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption, the hydrogen consumption per hundred kilometers of the fuel cell vehicle under the single test is calculated; after the test bench receives the operation starting instruction, the corresponding working condition road spectrum is selected according to the vehicle type to be tested, and the real operation state can be simulated according to the characteristics of the fuel cell vehicle, so that the pertinence of a test scene and the representativeness of data are ensured; and the SOC change data, the instantaneous driving speed and the total hydrogen consumption in the running process of the vehicle are automatically collected, so that the interference of manual operation is avoided, and the collection precision and consistency of the test data are greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen consumption testing of fuel cell vehicles, and in particular to a method and system for testing hydrogen consumption of fuel cell vehicles based on a test bench. Background Art

[0002] At present, fuel cell vehicles, as a clean energy means of transportation, have received widespread attention in recent years due to their high efficiency, zero emissions and long driving range. In order to promote its application and promotion, various regions have successively issued relevant fuel cell vehicle promotion policies, accelerating the marketization process of fuel cell vehicles. In this context, users are paying more and more attention to the performance indicators of fuel cell vehicles, especially hydrogen consumption data. However, the main method for obtaining hydrogen consumption data of fuel cell vehicles currently relies on road tests or rotating hub tests of the vehicle. Although these traditional methods can reflect the hydrogen consumption of vehicles in actual use, they also have significant shortcomings.

[0003] First of all, road tests require a complete vehicle configuration for testing, and although the rotary test can simulate some working conditions, it also requires a complete vehicle. This has led to a significant increase in development costs, and at the same time, due to limitations in site and equipment, the development cycle has been significantly extended. In addition, actual road tests are easily affected by environmental factors (such as climate conditions, road conditions, etc.), and the accuracy and stability of the data are difficult to guarantee. Moreover, due to the lack of standardization of test methods at this stage, the repeatability of the test process is low, especially under dynamic conditions, there are errors in the measurement and calculation of hydrogen consumption, mileage and power battery SOC changes.

[0004] In summary, the existing hydrogen consumption test of fuel cell vehicles relies on road tests of the entire vehicle, and under dynamic conditions, there are errors in the measurement and calculation of hydrogen consumption, mileage and power battery SOC changes, resulting in high testing costs and low accuracy. Summary of the invention

[0005] In order to solve the problem that the existing hydrogen consumption test of fuel cell vehicles relies on road tests of the whole vehicle, and there are errors in the measurement and calculation of hydrogen consumption, mileage and power battery SOC change under dynamic conditions, resulting in high test cost and low accuracy, the present invention proposes a hydrogen consumption test method for fuel cell vehicles based on a test bench, comprising: When the test bench receives the start-up command, it selects the corresponding operating road spectrum according to the type of fuel cell vehicle to be tested; Based on the operating condition road spectrum, collecting SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; The hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test is calculated based on the SOC change data, the instantaneous driving speed and the total hydrogen consumption.

[0006] Optionally, the calculating, according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption, the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test includes: Calculating an equivalent amount of hydrogen corresponding to the SOC change data according to the SOC change data; Calculating the vehicle mileage of the fuel cell vehicle according to the instantaneous driving speed; The hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test is calculated based on the equivalent hydrogen amount corresponding to the SOC change data, the vehicle mileage and the total hydrogen consumption.

[0007] Optionally, the calculation formula corresponding to the equivalent hydrogen amount corresponding to the SOC change data is as follows: in, Indicates the equivalent amount of hydrogen corresponding to the SOC change data; represents the hydrogen conversion coefficient; indicating the SOC change data; Indicates power battery capacity data of the fuel cell vehicle; Indicates the average efficiency of the power battery of the fuel cell vehicle.

[0008] Optionally, the calculation formula corresponding to the vehicle mileage of the fuel cell vehicle is as follows: in, Indicates the vehicle mileage of the fuel cell vehicle; Indicates the instantaneous speed of the fuel cell vehicle under the selected industrial control road spectrum; Indicates the test time.

[0009] Optionally, the operating condition road spectrum includes one or more of the following: C-WTVC operating condition, CLTC-D operating condition and actual operating scenario condition.

[0010] Optionally, the actual operating scenario conditions include one or more of the following: high-speed conditions, constant-speed conditions, national highway conditions, and mountainous conditions.

[0011] Optionally, after calculating the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption, the method further includes: Secondarily collecting the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; Calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the secondary test according to the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected for the second time; The test bench is used to collect SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle three times; Calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the three tests based on the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected three times; The hydrogen consumption per 100 kilometers of the fuel cell vehicle under the single test, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the second test, and the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the third test are averaged and the average value is used as the final hydrogen consumption per 100 kilometers of the fuel cell vehicle.

[0012] Based on the same inventive concept, the present invention also provides a fuel cell vehicle hydrogen consumption test system based on a test bench, comprising: The operating condition selection module is used to select the corresponding operating condition road spectrum according to the type of fuel cell vehicle to be tested when the test bench receives the start-up operation instruction; A data acquisition module, used for collecting SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench based on the operating road spectrum; The hydrogen consumption calculation module is used to calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption.

[0013] Optionally, the hydrogen consumption calculation module includes: An equivalent hydrogen conversion unit, used for calculating an equivalent amount of hydrogen corresponding to the SOC change data according to the SOC change data; A mileage calculation unit, used to calculate the vehicle mileage of the fuel cell vehicle according to the instantaneous driving speed; The hydrogen consumption test unit is used to calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test according to the equivalent hydrogen amount corresponding to the SOC change data, the vehicle mileage and the total hydrogen consumption.

[0014] Optionally, the calculation formula corresponding to the equivalent hydrogen amount corresponding to the SOC change data is as follows: in, Indicates the equivalent amount of hydrogen corresponding to the SOC change data; represents the hydrogen conversion coefficient; indicating the SOC change data; Indicates power battery capacity data of the fuel cell vehicle; Indicates the average efficiency of the power battery of the fuel cell vehicle.

[0015] Optionally, the calculation formula corresponding to the vehicle mileage of the fuel cell vehicle is as follows: in, Indicates the vehicle mileage of the fuel cell vehicle; Indicates the instantaneous speed of the fuel cell vehicle under the selected industrial control road spectrum; Indicates the test time.

[0016] Optionally, the operating condition road spectrum includes one or more of the following: C-WTVC operating condition, CLTC-D operating condition and actual operating scenario condition.

[0017] Optionally, the actual operating scenario conditions include one or more of the following: high-speed conditions, constant-speed conditions, national highway conditions, and mountainous conditions.

[0018] Optionally, the hydrogen consumption test system further includes: a test correction module, which is used to: Secondarily collecting the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; Calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the secondary test according to the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected for the second time; The test bench is used to collect SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle three times; Calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the three tests according to the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected three times; The hydrogen consumption per 100 kilometers of the fuel cell vehicle under the single test, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the second test, and the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the third test are averaged and the average value is used as the final hydrogen consumption per 100 kilometers of the fuel cell vehicle.

[0019] In yet another aspect, the present invention further provides a computer device, comprising: one or more processors; A memory for storing one or more programs; When the one or more programs are executed by the one or more processors, a hydrogen consumption test method for a fuel cell vehicle based on a test bench as described above is implemented.

[0020] On the other hand, the present invention further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed, the above-mentioned method for testing hydrogen consumption of a fuel cell vehicle based on a test bench is implemented.

[0021] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a method and system for testing hydrogen consumption of a fuel cell vehicle based on a test bench, comprising: when the test bench receives a start-up operation instruction, selecting a working condition road spectrum according to the model of the fuel cell vehicle to be tested; based on the working condition road spectrum, collecting the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; calculating the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a single test according to the SOC change data, instantaneous driving speed and total hydrogen consumption; after receiving the start-up operation instruction, the test bench selects the corresponding working condition road spectrum according to the model to be tested, so as to simulate the actual operating state according to the characteristics of the fuel cell vehicle, thereby ensuring the pertinence of the test scene and the representativeness of the data; and by automatically collecting the SOC change data, instantaneous driving speed and total hydrogen consumption during vehicle operation, the interference of human operation is avoided, and the collection accuracy and consistency of the test data are greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic flow chart of a method for testing hydrogen consumption of a fuel cell vehicle based on a test bench provided by the present invention; Figure 2 A schematic diagram of the framework of a test bench structure in a test bench-based hydrogen consumption test method for a fuel cell vehicle provided by the present invention; Figure 3 A schematic diagram of the structural composition of a fuel cell vehicle hydrogen consumption test system based on a test bench provided by the present invention. DETAILED DESCRIPTION

[0023] The present invention proposes a test bench-based hydrogen consumption test method, system, device and medium for a fuel cell vehicle. The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] Embodiment 1: The present invention provides a flow chart of a method for testing hydrogen consumption of a fuel cell vehicle based on a test bench. Figure 1 As shown, including: Step 1: When the test bench receives the start-up command, the corresponding operating condition road spectrum is selected according to the type of fuel cell vehicle to be tested; Step 2: Based on the operating road spectrum, collect the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; Step 3: Based on the SOC change data, instantaneous driving speed and total hydrogen consumption, calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a single test.

[0025] Generally, the hydrogen consumption per 100 kilometers of a fuel cell vehicle is an important indicator for evaluating the vehicle's energy efficiency performance. However, existing hydrogen consumption tests mainly rely on road tests or rotary drum tests, which are not only costly and time-consuming, but also easily interfered with by external environmental factors, resulting in poor accuracy and repeatability of test data. To address this issue, the test bench can receive start-up instructions, select a matching operating road spectrum based on the vehicle model to be tested, and collect key parameters such as SOC change data, instantaneous driving speed, and total hydrogen consumption during vehicle operation. Based on these data, the actual hydrogen consumption per 100 kilometers of the vehicle is calculated, thereby achieving a more efficient, accurate, and economical testing method. Specifically:

[0026] In one implementation, the above process of calculating the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a single test based on the SOC change data, the instantaneous driving speed and the total hydrogen consumption may include: According to the SOC change data, the equivalent amount of hydrogen corresponding to the SOC change data is calculated; Calculate the vehicle mileage of the fuel cell vehicle based on the instantaneous driving speed; Based on the equivalent hydrogen volume, vehicle mileage and total hydrogen consumption corresponding to the SOC change data, calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test; In this implementation, the accurate calculation of hydrogen consumption per 100 kilometers of a fuel cell vehicle in a single test is achieved through step-by-step processing of SOC change data, instantaneous driving speed, and total hydrogen consumption, demonstrating significant technical advantages. By converting SOC change data into equivalent hydrogen volume, not only the scientific nature of the calculation and the accuracy of the results are improved, but also the energy contribution of the power battery and fuel cell is fully evaluated, providing more complete vehicle energy efficiency information. The accurate calculation of the vehicle's mileage is achieved through the integration of the instantaneous driving speed, ensuring that real mileage data can be obtained under multiple operating conditions, so that the calculation of hydrogen consumption per 100 kilometers is closer to the actual operation of the vehicle. This processing method can eliminate the error problem under dynamic conditions in traditional tests and provide highly reliable energy consumption evaluation results. In addition, the implementation of this method not only brings accurate results of the 100-kilometer hydrogen consumption test, but also significantly improves the test efficiency. That is, through the automated collection and step-by-step calculation process, the evaluation of the actual operating energy consumption of the vehicle can be completed quickly, which greatly shortens the development and verification cycle, and reduces the cost and time pressure caused by road testing. The standardized processing of this implementation method makes the test results highly repeatable and consistent, providing a reliable technical basis for comparison under different test conditions, and contributing to the formulation of energy consumption evaluation standards in the industry. More importantly, this implementation method also provides strong support for the optimization and development of fuel cell vehicles. By accurately measuring and comprehensively analyzing the energy consumption performance of fuel cell vehicles under different working conditions, it can provide data basis for the optimization of operating strategies, the adjustment of powertrain configuration, and the improvement of energy management. At the same time, the flexibility of this solution makes it suitable for hydrogen consumption tests in various operating scenarios, which enhances the universality and practical guidance of the test results.

[0027] For example, the calculation formula corresponding to the equivalent hydrogen amount corresponding to the above SOC change data can be as follows: in, Indicates the equivalent amount of hydrogen corresponding to the SOC change data; represents the hydrogen conversion coefficient; Indicates SOC change data; Indicates the power battery power data of the fuel cell vehicle; represents the average efficiency of the power battery of the fuel cell vehicle; in this example, the SOC change (i.e. ) is converted into an equivalent amount of hydrogen, taking into account the capacity data of the power battery ( ) and average efficiency( ), and the hydrogen conversion factor ( ), thus establishing a scientific, intuitive and universal calculation method. This processing method not only improves the accuracy of the data and makes the evaluation of the energy flow of fuel cell vehicles more comprehensive, but also organically combines the energy contribution of the power battery with the direct hydrogen consumption of the fuel cell system, providing a more accurate analysis tool for the energy consumption evaluation of the whole vehicle; through the implementation of this example, the problem of the difficulty in quantifying the impact of the change of the power battery SOC on the energy consumption of the whole vehicle in traditional tests is effectively solved. Through the quantitative calculation method of the equivalent hydrogen amount, the scientificity and repeatability of the energy consumption evaluation results are ensured. Furthermore, this calculation method is also applicable to multi-condition tests, making it universal and flexible. As a result, the test results can not only accurately reflect the vehicle's hydrogen consumption per 100 kilometers, but also provide a key basis for the optimization of energy management strategies and the improvement of power system design. At the same time, the mathematical model of this example is simple and easy to implement, and can be quickly embedded in the existing test process, improving the overall test efficiency, shortening the development and verification cycle, and reducing the test cost.

[0028] For example, the calculation formula corresponding to the vehicle mileage of the above-mentioned fuel cell vehicle can be as follows: in, Indicates the vehicle mileage of the fuel cell vehicle; Indicates the instantaneous speed of the fuel cell vehicle under the selected industrial control road spectrum; Indicates the test time; in this example, the instantaneous speed of the vehicle is Over time The integral processing can accurately reflect the actual distance traveled by the vehicle during the test, especially under dynamic working conditions and complex road spectra, which can better reflect the real characteristics of the vehicle's driving state. This calculation method based on continuous speed data avoids the deviation problem caused by environmental interference or equipment errors in traditional mileage measurement, ensuring the accuracy and reliability of the test results. By accurately quantifying the mileage of the whole vehicle, this example provides an important basis for the calculation of hydrogen consumption per 100 kilometers, making the energy consumption evaluation results more scientific and reliable. At the same time, this calculation method is applicable to different working conditions and road spectra, and can be quickly adapted to complex scenes such as highways, cities and mountainous areas, enhancing the versatility and applicability of the test. In addition, the integral calculation process based on the instantaneous driving speed can capture the speed fluctuation characteristics of the vehicle in real time, and provide detailed data support for further optimizing the vehicle's dynamic performance and operation strategy. This high-precision mileage calculation not only improves the accuracy of fuel cell vehicle energy consumption testing, but also lays a data foundation for the optimization of energy distribution management and working condition adaptation strategies. At the same time, because the calculation model is simple and efficient, it is easy to embed into the automated test process, which can reduce the test cost and improve the test efficiency.

[0029] For example, the above-mentioned operating condition road spectrum may include one or more of the following: C-WTVC (China-Worldwide harmonized Light-duty Vehicles Test Cycle, China-Global Harmonized Light Vehicle Test Cycle) operating condition, CLTC-D (China Light-duty Vehicle Test Cycle – D, China Light Vehicle Test Cycle-D) operating condition and actual operating scenario condition; For example, the above-mentioned actual operating scenario conditions include one or more of the following: high-speed conditions, constant speed conditions (such as 40km / h), national highway conditions and mountainous conditions; In the above example, by selecting a variety of operating conditions, including standardized C-WTVC operating conditions, CLTC-D operating conditions, and actual operating scenario conditions (such as high-speed conditions, constant speed conditions, national highway conditions, and mountainous conditions), the energy consumption performance of fuel cell vehicles in multiple scenarios is accurately evaluated, bringing significant technical effects. By combining standardized test conditions with actual operating conditions, it can not only meet the industry's requirements for comparability and standardization of test results, but also truly reflect the energy consumption performance of vehicles in different actual application scenarios, and comprehensively improve the scientificity and representativeness of the test. Specifically, standardized operating conditions such as C-WTVC and CLTC-D can provide a basis for comparing energy consumption standards of fuel cell vehicles worldwide, making the test results more widely applicable and internationally consistent; while actual operating scenario conditions (such as high-speed, constant-speed, national highway, and mountainous conditions) can simulate the energy consumption of fuel cell vehicles in real complex environments, and provide data support for the performance optimization of vehicles in a variety of usage scenarios. This design not only makes up for the lack of applicability of single-condition test results, but also can capture the energy consumption change characteristics of vehicles in dynamic operation, so that the test results are closer to the user experience under real conditions. In addition, by flexibly combining and switching different working condition road spectra, the test efficiency can be significantly improved. During the test, a single condition or a combination of multiple conditions can be selected according to needs, and the actual operation trajectory of the vehicle can be simulated through continuous testing to ensure the consistency and integrity of the test data. This multi-condition test method provides more comprehensive reference data for the optimization of fuel cell vehicle operation strategies, improvement of energy management solutions, and adjustment of power system design.

[0030] In one implementation, after calculating the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a single test according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption, the following may also be included: The test bench is used to collect the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle for the second time; Based on the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected for the second time, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the second test is calculated; The test bench was used to collect the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle three times; Based on the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected three times, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the three tests was calculated; The average value of the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the single test, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the second test, and the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the third test is calculated, and the average value is used as the final hydrogen consumption per 100 kilometers of the fuel cell vehicle; In this implementation, the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle are collected and calculated multiple times, and the average value of at least three test results is used as the final hydrogen consumption per 100 kilometers, which significantly improves the reliability, stability and representativeness of the test results. Through multiple collections and calculations, the deviation caused by small external disturbances or system errors in a single test is effectively reduced, the accuracy and consistency of the hydrogen consumption measurement results per 100 kilometers are ensured, and the discrete data that may appear during the test are effectively smoothed, making the calculation results more statistically significant. This processing method is particularly important for energy consumption tests under dynamic conditions, because complex operating conditions and instantaneous data fluctuations may affect the credibility of single test results. Through multiple sampling and comprehensive analysis, this implementation method can more comprehensively reflect the actual energy consumption level of fuel cell vehicles under specific conditions, thereby improving the reference value of data for vehicle performance evaluation and optimization decision-making. In addition, the average value calculation as the final result can provide a fairer and more stable benchmark for comparisons under different test environments and conditions, and also contribute to the formulation and promotion of industry standards. This technical feature not only improves the accuracy of the fuel cell vehicle's hydrogen consumption per 100 kilometers, but also provides reliable data support for the adjustment of operating strategies and the optimization of system performance. Overall, this implementation method not only meets the high-precision testing requirements, but also enhances the universality and technical value of the test method through scientific data processing procedures, providing important guarantees for the research and development and market application of fuel cell vehicles.

[0031] In summary, the present invention aims at the fact that the hydrogen consumption test of the existing fuel cell vehicle relies on the road test of the whole vehicle, and under dynamic conditions, there are errors in the measurement and calculation of hydrogen consumption, mileage and power battery SOC change, resulting in high test cost and low accuracy. A fuel cell vehicle hydrogen consumption test method based on a test bench is proposed, and the test bench is used to achieve accurate testing of the hydrogen consumption per 100 kilometers of the fuel cell vehicle, showing significant innovation and technical advantages. After receiving the start-up operation command, the test bench automatically selects the appropriate working condition road spectrum according to the model of the fuel cell vehicle to be tested, so as to accurately simulate the operating state of the vehicle in actual use. This technical feature ensures the pertinence and representativeness of the test results, and solves the problem of test errors caused by environmental complexity and uncertainty in traditional road tests. Based on the selected working condition road spectrum, the test bench collects key data in the vehicle operation process in real time, including SOC change data, instantaneous driving speed and total hydrogen consumption, and uses automated equipment to eliminate the potential impact of human intervention, greatly improving the accuracy and consistency of data collection. This efficient test process can comprehensively record the key energy consumption indicators in the vehicle operation state, providing a reliable basis for subsequent calculations; further, the present invention adopts a scientific calculation method to convert the SOC change of the power battery into an equivalent amount of hydrogen, and combines the total hydrogen consumption and the vehicle mileage to accurately calculate the 100-kilometer hydrogen consumption under a single test, breaking through the bottleneck of large data measurement and calculation errors under dynamic working conditions in traditional test methods, making the test results more scientific and accurate. At the same time, the test bench realizes the repeatability and comparability of the test process through standardized test procedures, providing strong data support for vehicle performance evaluation and R&D optimization. It can be seen that the present invention not only demonstrates a technological breakthrough in the field of hydrogen consumption testing of fuel cell vehicles, but also significantly reduces the test cost, shortens the test cycle, and improves the reliability and efficiency of the test. Through precise simulation and scientific calculation of the test bench, a comprehensive and standardized solution is provided for the energy consumption performance testing of fuel cell vehicles, which promotes the research and development and popularization and application of fuel cell vehicles.

[0032] Embodiment 2: A fuel cell vehicle hydrogen consumption test method based on a test bench architecture provided by the present invention is described with a specific embodiment. The test bench architecture in this embodiment adopts a fuel cell vehicle power system test bench, which is used to realize the hydrogen consumption test under various working conditions of the whole vehicle. The required test conditions are input through the operating platform and the control device, and a start-up operation instruction is issued to the fuel cell vehicle power system test bench. The fuel cell vehicle power system test bench operates according to the instructions input by the operating platform and the control device; The hydrogen consumption during the whole process is measured by the hydrogen flow meter on the test bench, the vehicle mileage during the whole process is measured by the test bench control platform, and the SOC value of the power battery before and after the test is reflected by the test bench; The vehicle hydrogen consumption is calculated based on the equivalent hydrogen volume of the hydrogen consumption, the change in the power battery SOC, and the driving mileage; The automatic mode is used during the test of each operating condition, and no human intervention is allowed. The above test needs to be repeated more than three times, and the average value is calculated to be the actual hydrogen consumption per 100 kilometers of the fuel cell vehicle.

[0033] Preferably, the test bench can replace corresponding parts according to the vehicle configuration: for example, the test bench can quickly switch the fuel cell engine, power battery, drive motor, related cooling system and controller according to the vehicle configuration requirements to perfectly reproduce the basic powertrain configuration, drive system, control system and fuel cell vehicle operation strategy of the fuel cell vehicle; For example, the testbed architecture can be as follows Figure 2 As shown, it includes an operating platform 1, a fuel cell vehicle power system, and a hydrogen supply system 11 used by the test bench. Specifically, the power system mainly includes a fuel cell engine 4, a power battery 5, an all-in-one controller 8, a motor and a motor controller 9, a fuel cell cooling system 7, an independent cooling system for a power battery 6, a vehicle controller 2, and a cooling controller 3. The test bench is built with this architecture to provide a highly integrated and controllable test environment for fuel cell vehicles, making the comprehensive performance evaluation of fuel cell vehicles more accurate and systematic. The test bench combines an operating platform, various controllers, and a dynamometer to achieve dynamic testing and data collection of vehicles under simulated actual driving conditions. In addition, the independent cooling system optimizes thermal management and enhances the safety and efficiency of the test. In this way, the test process can not only simulate the real operating environment, but also evaluate extreme operating conditions under safe conditions, greatly improving the speed and quality of research and development. Overall, the test bench has greatly promoted the research and development and application of fuel cell technology, provided strong support for the rapid transformation from theory to market, and ensured the combination of technical feasibility and commercial feasibility.

[0034] Based on the above test bench architecture, the specific test process may include: Step S21, build a test bench according to the configuration of the whole vehicle, mainly replace the fuel cell engine 4, power battery 5, fuel cell cooling system 7 and motor and electronic control 9, and follow the Figure 2 Make the corresponding connections according to the bench connection diagram shown.

[0035] Step S22, select the corresponding test conditions according to the vehicle application conditions, and the test conditions are combined in a 1:1:1 ratio according to C-WTVC, CLTC-D and the actual operation scenario road spectrum of the fuel cell; the actual operation scenario road spectrum includes 25% high-speed conditions, 25% constant speed 40km / h conditions, 25% national highway conditions and 25% mountain conditions, and the overall road spectrum duration is not less than 3600s.

[0036] Step S23, the test conditions and test instructions are issued through the operating platform, the high voltage and dynamometer on the test bench are started and operated according to the road spectrum, the motor is started and operated as required, and the fuel cell engine is started and operated as required.

[0037] Step S24, according to the hydrogen consumption m 1 The hydrogen consumption is calculated based on the equivalent amount of hydrogen in kg and the change in SOC of the power battery and the driving mileage.

[0038] Specifically, step S21 can be decomposed into step S31 and step S32.

[0039] Step S31, based on the power system configuration of the vehicle, and in accordance with Figure 2 The mechanical connection of parts is carried out in the connection sequence.

[0040] Step S32, updating the vehicle control strategy and cooling control strategy related to the vehicle controller 2 and the cooling controller 3 through the test operation platform to make them consistent with the data used by the actual vehicle.

[0041] Specifically, step S22 can be decomposed into step S41 and step S42.

[0042] Step S41, select the actual working condition according to the actual operation scenario of the vehicle, and perform the corresponding coefficient , , and For example, the high-speed scenario is multiplied by the coefficients for high-speed conditions, constant speed 40km / h conditions, national highway conditions, and mountainous conditions. , , and in, In this step, the corresponding actual working condition is selected according to the actual operation scenario of the vehicle, and different weight systems are assigned to the high-speed working condition, the constant speed 40km / h working condition, the national highway working condition and the mountainous working condition. , , and (satisfy( ), which realizes the dynamic and accurate evaluation of the energy consumption performance of fuel cell vehicles, bringing significant technical effects. This weight setting method can flexibly simulate the energy consumption characteristics of fuel cell vehicles in different actual usage scenarios. For example, in high-speed scenarios, by giving a higher weight to high-speed conditions, , and reasonably allocate the weights of other working conditions, which can be closer to the actual operating conditions and provide scene-specific energy consumption evaluation results. This ability to dynamically adjust the weights of working conditions effectively solves the problem that the traditional fixed working condition test method cannot fully reflect the multi-scenario operating performance of the vehicle, making the test results more practical. At the same time, the scheme accurately controls the weight distribution of multiple working conditions through mathematical models, avoiding the energy consumption calculation deviation caused by unbalanced working conditions, thereby improving the scientificity and credibility of the test results. In this way, the overall energy consumption performance of fuel cell vehicles in complex operating environments can be truly reflected, providing an important basis for the optimization of operating strategies. In addition, the scheme also enhances the versatility and adaptability of the test method, and can be flexibly adjusted according to different usage scenarios (such as urban logistics, high-speed transportation, mountain operations, etc.) to meet diverse needs.

[0043] Step S42: convert the relevant road spectrum into a motor torque spectrum through simulation software, and send the torque spectrum to the motor and dynamometer through the test operation platform.

[0044] Furthermore, step S23 can be decomposed into step S51 to step S53.

[0045] Step S51, the test operation platform sends a high-voltage instruction to the vehicle controller, and the vehicle controller sends a high-voltage instruction to the power battery and the all-in-one controller. The high-voltage contactor of the power battery is closed, the high-voltage contactors of the main drive and auxiliary drive of the all-in-one controller are closed, and the high-voltage contactor of the motor controller is closed, and the entire test bench completes the high-voltage.

[0046] Step S52, the test operation platform sends an operation command to the dynamometer and the vehicle controller, the vehicle controller sends a start or shutdown command to the fuel cell according to actual needs, and the fuel cell engine executes as required; the dynamometer executes according to the instructions issued by the test bench.

[0047] Step S53, automatically and cyclically execute the working condition determined in step S22 three times, without any human operation during the process, until the test is finished.

[0048] Specifically, step S24 can be decomposed into step S61 to step S64.

[0049] Step S61, based on the test road spectrum provided in step S22, the vehicle mileage is calculated using an integral method, and the specific calculation method is as follows: in, is the vehicle mileage (m), is the instantaneous speed of the vehicle under test conditions (m / s), The minimum time unit (s).

[0050] Step S62, based on the power battery SOC recorded by the test operation platform before and after the test, the SOC difference between the power battery before and after the test is calculated, and the equivalent hydrogen consumption is calculated according to the power battery SOC difference. The equivalent hydrogen consumption of the power battery SOC change value is calculated using the following calculation formula: in, is the equivalent hydrogen mass (kg), is the battery SOC change value before and after the test, is the power battery capacity, is the average efficiency of the fuel cell; Step S63, calculating the actual hydrogen consumption of the experimental process according to the hydrogen consumption of the experimental process measured by the experimental operation platform and the equivalent hydrogen consumption calculated in step S62, wherein the actual hydrogen consumption is The sum of m1; Step S64, calculating the hydrogen consumption per 100 kilometers of the vehicle under the working condition based on the mileage calculated in step S61 and step S63 and the actual hydrogen consumption.

[0051] This embodiment can illustrate that the present invention provides a fuel cell vehicle hydrogen consumption test method based on a test bench. The driving conditions are proportionally set to three working conditions, namely, C-WTVC, CLTC-D, and the actual operating scenario of the fuel cell vehicle, and the hydrogen consumption of the fuel cell vehicle is tested by statistically repeating the test results. The test results are closer to the actual application conditions than the cyclic conditions, and the test results are more realistic. In addition, the method is tested on a test bench, and the laboratory environment is easy to implement and repeat, and the test cost is reduced, which is conducive to the promotion and application of the method. It is of great significance to improve the accuracy of hydrogen consumption testing of fuel cell vehicles and reduce the test cost.

[0052] Embodiment 3: The present invention based on the same inventive concept also provides a fuel cell vehicle hydrogen consumption test system based on a test bench, the structural composition diagram is as follows: Figure 3 As shown, including: The operating condition selection module is used to select the corresponding operating condition road spectrum according to the type of fuel cell vehicle to be tested when the test bench receives the start-up operation instruction; The data acquisition module is used to collect the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench based on the working condition road spectrum; The hydrogen consumption calculation module is used to calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a single test based on the SOC change data, instantaneous driving speed and total hydrogen consumption.

[0053] In one implementation, the above-mentioned hydrogen consumption calculation module may include: An equivalent hydrogen conversion unit, used to calculate the equivalent hydrogen amount corresponding to the SOC change data according to the SOC change data; A mileage calculation unit, used to calculate the vehicle mileage of the fuel cell vehicle according to the instantaneous driving speed; The hydrogen consumption test unit is used to calculate the hydrogen consumption per 100 kilometers of a fuel cell vehicle in a single test based on the equivalent hydrogen amount corresponding to the SOC change data, the vehicle mileage and the total hydrogen consumption.

[0054] For example, the calculation formula corresponding to the equivalent hydrogen amount corresponding to the above SOC change data can be as follows: in, Indicates the equivalent amount of hydrogen corresponding to the SOC change data; represents the hydrogen conversion coefficient; Indicates SOC change data; Indicates the power battery power data of the fuel cell vehicle; Indicates the average efficiency of the power battery of a fuel cell vehicle.

[0055] For example, the calculation formula corresponding to the vehicle mileage of the above-mentioned fuel cell vehicle is as follows: in, Indicates the vehicle mileage of the fuel cell vehicle; Indicates the instantaneous speed of the fuel cell vehicle under the selected industrial control road spectrum; Indicates the test time.

[0056] For example, the above operating condition road spectrum includes one or more of the following: C-WTVC operating condition, CLTC-D operating condition and actual operating scenario condition.

[0057] For example, the above-mentioned actual operating scenario conditions include one or more of the following: high-speed conditions, constant-speed conditions, national highway conditions and mountainous conditions.

[0058] In one implementation, the above hydrogen consumption test system may further include: a test correction module, specifically used for: The test bench is used to collect the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle for the second time; Based on the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected for the second time, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the second test is calculated; The test bench was used to collect the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle three times; Based on the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected three times, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the three tests was calculated; The average value of the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a single test, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a second test, and the hydrogen consumption per 100 kilometers of the fuel cell vehicle under a third test is calculated, and the average value calculated is used as the final hydrogen consumption per 100 kilometers of the fuel cell vehicle.

[0059] Embodiment 4: Based on the same inventive concept, the present invention also provides a computer device, which includes a processor and a memory, the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in a computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions in a computer storage medium to implement a corresponding method flow or corresponding function, so as to implement the steps of a hydrogen consumption test method for a fuel cell vehicle based on a test bench in the above embodiment.

[0060] Embodiment 5: Based on the same inventive concept, the present invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a computer device for storing programs and data. It can be understood that the computer-readable storage medium here can include both built-in storage media in a computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by a processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory, such as at least one disk memory. The processor can load and execute one or more instructions stored in the computer-readable storage medium to implement the steps of a hydrogen consumption test method for a fuel cell vehicle based on a test bench in the above embodiment.

[0061] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0062] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0063] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0064] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the application, but these changes, modifications or equivalent substitutions are all within the protection scope of the claims to be approved.

Claims

1. A method for testing hydrogen consumption of a fuel cell vehicle based on a test bench, characterized in that: include: When the test bench receives the start-up command, it selects the corresponding operating road spectrum according to the type of fuel cell vehicle to be tested; Based on the operating condition road spectrum, collecting SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; The hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test is calculated based on the SOC change data, the instantaneous driving speed and the total hydrogen consumption.

2. The method according to claim 1, characterized in that The calculating, according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption, the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test comprises: Calculating an equivalent amount of hydrogen corresponding to the SOC change data according to the SOC change data; Calculating the vehicle mileage of the fuel cell vehicle according to the instantaneous driving speed; The hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test is calculated based on the equivalent hydrogen amount corresponding to the SOC change data, the vehicle mileage and the total hydrogen consumption.

3. The method according to claim 2, characterized in that The calculation formula for the equivalent hydrogen amount corresponding to the SOC change data is as follows: ； in, Indicates the equivalent amount of hydrogen corresponding to the SOC change data; represents the hydrogen conversion coefficient; indicating the SOC change data; Indicates power battery capacity data of the fuel cell vehicle; Indicates the average efficiency of the power battery of the fuel cell vehicle.

4. The method according to claim 2, characterized in that The calculation formula corresponding to the vehicle mileage of the fuel cell vehicle is as follows: ； in, Indicates the vehicle mileage of the fuel cell vehicle; Indicates the instantaneous speed of the fuel cell vehicle under the selected industrial control road spectrum; Indicates the test time.

5. The method according to claim 1, characterized in that The operating condition road spectrum includes one or more of the following: C-WTVC operating condition, CLTC-D operating condition and actual operating scenario condition.

6. The method according to claim 5, characterized in that The actual operating scenario conditions include one or more of the following: high-speed conditions, constant-speed conditions, national highway conditions, and mountainous conditions.

7. The method according to claim 1, characterized in that After calculating the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption, the method further includes: Secondarily collecting the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench; Calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the secondary test according to the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected for the second time; The test bench is used to collect SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle three times; Calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the three tests based on the SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle collected three times; The hydrogen consumption per 100 kilometers of the fuel cell vehicle under the single test, the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the second test, and the hydrogen consumption per 100 kilometers of the fuel cell vehicle under the third test are averaged and the average value is used as the final hydrogen consumption per 100 kilometers of the fuel cell vehicle.

8. A fuel cell vehicle hydrogen consumption test system based on a test bench, characterized in that: include: The operating condition selection module is used to select the corresponding operating condition road spectrum according to the type of fuel cell vehicle to be tested when the test bench receives the start-up operation instruction; A data acquisition module, used for collecting SOC change data, instantaneous driving speed and total hydrogen consumption of the fuel cell vehicle through the test bench based on the operating road spectrum; The hydrogen consumption calculation module is used to calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test according to the SOC change data, the instantaneous driving speed and the total hydrogen consumption.

9. The system according to claim 8, characterized in that The hydrogen consumption calculation module comprises: An equivalent hydrogen conversion unit, used for calculating an equivalent amount of hydrogen corresponding to the SOC change data according to the SOC change data; A mileage calculation unit, used to calculate the vehicle mileage of the fuel cell vehicle according to the instantaneous driving speed; The hydrogen consumption test unit is used to calculate the hydrogen consumption per 100 kilometers of the fuel cell vehicle in a single test according to the equivalent hydrogen amount corresponding to the SOC change data, the vehicle mileage and the total hydrogen consumption.

10. The system according to claim 9, characterized in that The calculation formula for the equivalent hydrogen amount corresponding to the SOC change data is as follows: ； in, Indicates the equivalent amount of hydrogen corresponding to the SOC change data; represents the hydrogen conversion coefficient; indicating the SOC change data; Indicates power battery capacity data of the fuel cell vehicle; Indicates the average efficiency of the power battery of the fuel cell vehicle.

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