Fuel cell test bench safety monitoring execution method, device, equipment and medium

Abstract

The invention discloses a fuel cell test bench safety monitoring execution method, device, equipment and medium, and relates to the technical field of fuel cell system bench testing.The method comprises the steps that the hydrogen pressure change rate, the hydrogen concentration value and the reference value of the hydrogen concentration change rate are set respectively; collecting a hydrogen pressure signal and a hydrogen concentration signal in the test bench; based on the collected hydrogen pressure signal and hydrogen concentration signal, calculating to obtain a hydrogen pressure change rate, a hydrogen concentration value and a hydrogen concentration change rate in the test bench; and respectively comparing the hydrogen pressure change rate, the hydrogen concentration value and the hydrogen concentration change rate obtained by calculation with set reference values so as to adjust the working state of the test bench. By monitoring and automatically adjusting the hydrogen pressure and concentration, the system can quickly respond to hydrogen leakage and automatically take measures to guarantee the test safety, the safety risk is reduced, and the test efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cell system bench testing, and particularly relates to a safety monitoring execution method, device, equipment and medium for a fuel cell test bench. Background Art

[0002] A fuel cell is a device that converts hydrogen energy into electrical energy through an electrochemical reaction and has wide applications in the transportation field. In the development process of its power system - the fuel cell system, the fuel cell system test bench test is essential. During the development process, hydrogen leakage problems occur from time to time, which will cause relatively large potential safety hazards. To prevent such problems from occurring, hydrogen concentration sensors are generally installed on existing test benches. When the hydrogen concentration is too high, an alarm will be issued. However, during system calibration, especially during endurance tests, due to a series of factors such as too long test time and the test bench equipment person in charge being too busy, negligence often occurs. In this case, even if the test bench issues an alarm, there will be no one to handle it, which has relatively large potential safety hazards. Summary of the Invention

[0003] The present application provides a safety monitoring execution method, device, equipment and medium for a fuel cell test bench, which can solve the technical problem that the alarm issued by the fuel cell test bench in the prior art cannot be processed in time.

[0004] In a first aspect, an embodiment of the present application provides a safety monitoring execution method for a fuel cell test bench, including: respectively setting reference values for the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate, and collecting hydrogen pressure signals and hydrogen concentration signals inside the test bench; based on the collected hydrogen pressure signals and hydrogen concentration signals, calculating the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate inside the test bench; comparing the calculated hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate with the set reference values respectively to adjust the working state of the test bench.

[0005] In combination with the first aspect, in an implementation manner, the reference value of the hydrogen pressure change rate includes a first pressure change rate reference value; the reference value of the hydrogen concentration value includes a first concentration reference value and a second concentration reference value, and the first concentration reference value is less than the second concentration reference value; the reference value of the hydrogen concentration change rate includes a first concentration change rate reference value.

[0006] In combination with the first aspect, in an implementation manner, for adjusting the working state of the test bench, specifically: when the calculated hydrogen pressure change rate is greater than the first pressure change rate reference value, cut off the power supply of the test bench electronic load and turn on the exhaust device at a first preset power.

[0007] In combination with the first aspect, in one embodiment, the adjustment of the working state of the test bench is specifically as follows: when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, the hydrogen concentration value is greater than or equal to the first concentration reference value and less than the second concentration reference value, and the calculated hydrogen concentration change rate is less than the first concentration change rate reference value, control the electronic load of the test bench to operate at a preset limit power, and turn on the exhaust device at a second preset power; when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, the hydrogen concentration value is greater than or equal to the first concentration reference value and less than the second concentration reference value, and the calculated hydrogen concentration change rate is greater than or equal to the first concentration change rate reference value, control the electronic load of the test bench to operate at a preset limit power, and turn on the exhaust device at a third preset power.

[0008] In combination with the first aspect, in one embodiment, the adjustment of the working state of the test bench is specifically as follows: when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is greater than or equal to the second concentration reference value, cut off the power supply of the electronic load of the test bench, and turn on the exhaust device at a first preset power.

[0009] In combination with the first aspect, in one embodiment, the adjustment of the working state of the test bench is specifically as follows: when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is less than the first concentration reference value, control the normal operation of the electronic load of the test bench and control the exhaust device to be closed.

[0010] In combination with the first aspect, in one embodiment, the collection of the hydrogen pressure signal and the hydrogen concentration signal in the test bench is specifically as follows: collect the hydrogen pressure signal in the test bench through a pressure sensor arranged in the test bench, and collect the hydrogen concentration signal in the test bench through a hydrogen probe arranged in the test bench.

[0011] In the second aspect, an embodiment of the present application provides a safety monitoring execution device for a fuel cell test bench, including: a collection module for respectively setting reference values of the hydrogen pressure change rate, the hydrogen concentration value, and the hydrogen concentration change rate, and collecting the hydrogen pressure signal and the hydrogen concentration signal in the test bench; a calculation module for calculating the hydrogen pressure change rate, the hydrogen concentration value, and the hydrogen concentration change rate in the test bench based on the collected hydrogen pressure signal and hydrogen concentration signal; an adjustment module for comparing the calculated hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate with the set reference values respectively to adjust the working state of the test bench.

[0012] In a third aspect, an embodiment of the present application provides a safety monitoring execution device for a fuel cell test bench. The safety monitoring execution device for the fuel cell test bench includes a processor, a memory, and a fuel cell test bench safety monitoring execution program stored on the memory and executable by the processor. When the fuel cell test bench safety monitoring execution program is executed by the processor, the steps of the fuel cell test bench safety monitoring execution method described in any of the above embodiments are implemented.

[0013] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a fuel cell test bench safety monitoring execution program is stored. When the fuel cell test bench safety monitoring execution program is executed by a processor, the steps of the fuel cell test bench safety monitoring execution method described in any of the above embodiments are implemented.

[0014] The beneficial effects brought by the technical solutions provided in the embodiments of the present application include:

[0015] In the embodiments of the present application, by presetting reference values of the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate, and collecting and calculating relevant signals in real time, the system can quickly detect hydrogen leakage or pressure abnormalities and automatically take corresponding treatment measures, such as cutting off the intake valve, turning on the exhaust fan, reducing the electronic load power, etc., to avoid accidents caused by human negligence. At the same time, by real-time monitoring and automatic adjustment of parameters such as hydrogen pressure and concentration, the system can ensure hydrogen safety monitoring and automatic processing during the test process, thereby ensuring the safety of the test. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a flowchart of the fuel cell test bench safety monitoring execution method provided by the embodiment of the present application;

[0018] Figure 2 It is an application scenario diagram of the fuel cell test bench safety monitoring execution method provided by the embodiment of the present application;

[0019] Figure 3 It is a structural schematic diagram of the fuel cell test bench safety monitoring execution device provided by the embodiment of the present application. Detailed Embodiments

[0020] To enable those skilled in the art to better understand the solution of this application, the following will clearly and completely describe the technical solution in the embodiments of this application in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of this application.

[0021] This application provides a method, device, equipment and medium for safety monitoring and execution of a fuel cell test bench, which can solve the technical problem that the alarm issued by the fuel cell test bench in the prior art cannot be processed in time.

[0022] In the first aspect, the embodiments of this application provide a method for safety monitoring and execution of a fuel cell test bench. Figure 1 It is a flowchart of the method for safety monitoring and execution of the fuel cell test bench provided by the embodiments of this application. See Figure 1 , including the following steps:

[0023] In step S1, reference values of the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate are respectively set, and hydrogen pressure signals and hydrogen concentration signals in the test bench are collected.

[0024] Specifically, the reference values of the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate should be values that ensure the pressure and concentration of hydrogen are within a safe range. That is to say, if the reference value is exceeded, it may mean the occurrence of hydrogen leakage or other abnormal situations.

[0025] In the embodiments of this application, the hydrogen pressure signal in the test bench is collected by a pressure sensor set in the test bench, and the hydrogen concentration signal in the test bench is collected by a hydrogen probe set in the test bench. In some embodiments of this application, hydrogen probes can also be set both in the test bench and in the fuel cell system under test to further ensure the safety during the overall test process of the fuel cell system.

[0026] In step S2, based on the collected hydrogen pressure signal and hydrogen concentration signal, the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate in the test bench are calculated.

[0027] Specifically, the pressure value is read at a set time interval, the difference between the pressure values at two adjacent time points is calculated to obtain the pressure change amount, and the pressure change amount is divided by the time interval to obtain the hydrogen pressure change rate. The hydrogen concentration value is read at a set time interval, the difference between the hydrogen concentration values at two adjacent time points is calculated to obtain the hydrogen concentration change amount, and the hydrogen concentration change amount is divided by the time interval to obtain the hydrogen concentration change rate.

[0028] In step S3, the calculated hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate are respectively compared with the set reference values to adjust the working state of the test bench.

[0029] Specifically, in the embodiment of the present application, the reference value of the hydrogen pressure change rate includes a first pressure change rate reference value; the reference values of the hydrogen concentration value include a first concentration reference value and a second concentration reference value, and the first concentration reference value is less than the second concentration reference value; the reference value of the hydrogen concentration change rate includes a first concentration change rate reference value.

[0030] The purpose of setting two reference values for different hydrogen concentration values is to set a lower hydrogen concentration threshold. When the hydrogen concentration exceeds this value, it indicates that there may be a slight leakage risk. Then, a higher hydrogen concentration threshold is set. When the hydrogen concentration exceeds this value, it indicates that there is a serious leakage risk.

[0031] In the embodiment of the present application, adjusting the working state of the test bench specifically includes: when the calculated hydrogen pressure change rate is greater than the first pressure change rate reference value, cutting off the power supply of the test bench electronic load and turning on the exhaust device at the first preset power.

[0032] If the calculated hydrogen pressure change rate is greater than the first pressure change rate reference value, it means that the hydrogen pressure has an abnormal change, which may indicate a relatively high risk of hydrogen leakage. At this time, emergency measures should be taken immediately, such as cutting off the power supply of the test bench electronic load, turning on the exhaust fan, cutting off the intake valve, opening the relief valve, and sounding an audible and visual alarm at the same time, to prevent accidents. In the embodiment of the present application, the first preset power of the exhaust device can be the maximum power of the exhaust device to discharge hydrogen immediately to the greatest extent.

[0033] In the embodiment of the present application, adjusting the working state of the test bench specifically includes: when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, the hydrogen concentration value is greater than or equal to the first concentration reference value and less than the second concentration reference value, and the calculated hydrogen concentration change rate is less than the first concentration change rate reference value, controlling the test bench electronic load to operate at a preset limit power and turning on the exhaust device at the second preset power; when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, the hydrogen concentration value is greater than or equal to the first concentration reference value and less than the second concentration reference value, and the calculated hydrogen concentration change rate is greater than or equal to the first concentration change rate reference value, controlling the test bench electronic load to operate at a preset limit power and turning on the exhaust device at the third preset power.

[0034] Specifically, if the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, and the hydrogen concentration value exceeds the first concentration reference value but does not reach the second concentration reference value, it indicates that there may be a slight leakage risk. At this time, the system can take relatively mild measures, such as restricting the power of the electronic load, turning on the exhaust fan, cutting off the intake valve, opening the relief valve and simultaneously giving an audible and visual alarm, etc., to reduce the hydrogen concentration and prevent the situation from deteriorating.

[0035] When the calculated hydrogen concentration change rate is less than the first hydrogen concentration change rate reference value, control the electronic load of the test bench to operate at a preset limited power, and turn on the exhaust device at a second preset power. Among them, the first hydrogen concentration change rate can be 0 ppm / s, the preset limited power can be 20% to 40% of the rated power of the fuel cell system, and the second preset power can be

[0036] P2 = 20%P max

[0037] P2 is the third preset power, and P max is the maximum power of the exhaust device.

[0038] When the calculated hydrogen concentration change rate is greater than or equal to the first hydrogen concentration change rate reference value, control the electronic load of the test bench to operate at a preset limited power, and turn on the exhaust device at a third preset power. Among them, the third preset power can be

[0039]

[0040] P3 is the third preset power, c is the hydrogen concentration value, c1 is the first concentration reference value, c2 is the second concentration reference value, and P max is the maximum power of the exhaust device.

[0041] In the embodiment of the present application, adjusting the working state of the test bench specifically includes: when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is greater than or equal to the second concentration reference value, cut off the power supply of the electronic load of the test bench, and turn on the exhaust device at the first preset power.

[0042] If the situation where the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is greater than or equal to the second concentration reference value occurs, it may indicate a relatively high hydrogen leakage risk. At this time, emergency measures should be taken immediately, such as cutting off the power supply of the electronic load of the test bench, turning on the exhaust fan, cutting off the intake valve, opening the relief valve and simultaneously giving an audible and visual alarm, etc., to prevent accidents from occurring. In the embodiment of the present application, the first preset power of the exhaust device can be the maximum power of the exhaust device to immediately discharge hydrogen to the maximum extent.

[0043] In the embodiments of the present application, adjusting the working state of the test bench specifically includes: when the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is less than the first concentration reference value, the electronic load of the test bench is controlled to operate normally, and the exhaust device is controlled to close.

[0044] If the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is less than the first concentration reference value, it means that there is no risk of hydrogen leakage at this time, and the test bench can operate normally without triggering an alarm or implementing special safety measures. However, it is still necessary to continuously monitor the changes in hydrogen pressure and concentration to ensure the safety of the test process.

[0045] In a specific embodiment, the pressure at the front end of the sample inlet is 1.6 Mpa, the first pressure change rate reference value is set to 0.1 Mpa / s, the first concentration reference value is 5000 ppm, the second concentration reference value is 10000 ppm, and the first concentration change rate reference value is 100 ppm / s.

[0046] When the calculated hydrogen pressure change rate is greater than 0.1 Mpa / s, cut off the power supply of the electronic load of the test bench, turn on the exhaust device at the maximum power of the exhaust device, and at the same time, give an audible and visual alarm.

[0047] When the calculated hydrogen pressure change rate is less than or equal to 0.1 Mpa / s, the hydrogen concentration value is greater than or equal to 5000 ppm and less than 10000 ppm, and the calculated hydrogen concentration change rate is less than 100 ppm / s, control the electronic load of the test bench to operate at 20% to 40% of the rated power of the fuel cell system, turn on the exhaust device at 20% of the maximum power of the exhaust device, and at the same time, give an audible and visual alarm.

[0048] When the calculated hydrogen pressure change rate is less than or equal to 0.1 Mpa / s, the hydrogen concentration value is greater than or equal to 5000 ppm and less than 10000 ppm, and the calculated hydrogen concentration change rate is greater than or equal to 100 ppm / s, control the electronic load of the test bench to operate at 20% to 40% of the rated power of the fuel cell system, and Turn on the exhaust device, and at the same time, give an audible and visual alarm. Wherein, P3 is the third preset power, c is the hydrogen concentration value, c1 is the first concentration reference value, c2 is the second concentration reference value, and P max Is the maximum power of the exhaust device.

[0049] When the calculated hydrogen pressure change rate is less than or equal to 0.1 Mpa / s and the hydrogen concentration value is greater than or equal to 10000 ppm, cut off the power supply of the electronic load of the test bench, turn on the exhaust device at the maximum power of the exhaust device, and at the same time, give an audible and visual alarm.

[0050] Figure 2 This is an application scenario diagram of the safety monitoring execution method for the fuel cell test bench provided by the embodiments of the present application.

[0051] Figure 2 In the figure, Q1 is a manual ball valve, PT1 is the first pressure sensor, PT2 is the second pressure sensor, FT1 is a filter, PRV1 is a manual pressure reducing valve, TM1 is the first explosion-proof solenoid valve, TM2 is the second explosion-proof solenoid valve, FM1 is a flow meter, NR1 is a check valve, G1 is a three-way valve, and TS1 is a temperature sensor.

[0052] The host computer issues a control command to the controller. The controller is connected to the host computer through a CAN line, and each component is electrically connected to the controller.

[0053] Specifically, hydrogen enters the system from an external supply source. First, it passes through the manual ball valve, which is used to manually control the on / off of hydrogen. Then it passes through the first pressure sensor and the second pressure sensor, which are used to monitor the hydrogen pressure value in real time. Hydrogen passes through the filter to remove impurities, and then the pressure is adjusted by the manual pressure reducing valve to ensure the stable operation of the subsequent system. Hydrogen can pass through the first explosion-proof solenoid valve and the second explosion-proof solenoid valve to automatically control the on / off of hydrogen, ensuring that the hydrogen supply is quickly cut off in case of an abnormality. The flow meter is used to monitor the hydrogen flow rate to ensure that the flow rate is within the set range and prevent over-supply. The check valve prevents hydrogen from flowing back, and the three-way valve is used to control the flow direction of hydrogen to ensure that hydrogen flows along the predetermined path. The temperature sensor is used to monitor the system temperature to prevent safety accidents caused by too high temperature.

[0054] The hydrogen probe is arranged above the hydrogen inlet pipeline inside the test bench and the fuel cell system to be tested, and is used to detect the hydrogen concentration inside the test bench and the fuel cell system to be tested. The exhaust device is a fan, which is arranged above the hydrogen probe. By increasing the ventilation volume, the hydrogen concentration inside the test bench is quickly reduced to prevent hydrogen accumulation. The power of the fan can be dynamically adjusted according to the change of hydrogen concentration. For example, it runs at a lower power when the concentration is lower and increases the power when the concentration is higher to achieve effective ventilation control and avoid unnecessary energy waste.

[0055] In the second aspect, the embodiments of the present application provide a safety monitoring execution device for a fuel cell test bench. Figure 3 This is a schematic structural diagram of the safety monitoring execution device for the fuel cell test bench provided by the embodiments of the present application. Refer to Figure 3, the device includes: a collection module for respectively setting reference values of the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate, and collecting hydrogen pressure signals and hydrogen concentration signals in the test bench; a calculation module for calculating the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate in the test bench based on the collected hydrogen pressure signals and hydrogen concentration signals; an adjustment module for comparing the calculated hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate with the set reference values respectively to adjust the working state of the test bench.

[0056] Among them, the functional implementation of each module in the above fuel cell test bench safety monitoring and execution device corresponds to each step in the above fuel cell test bench safety monitoring and execution method embodiment, and its functions and implementation processes will not be elaborated here one by one.

[0057] In the embodiment of the present application, by presetting reference values of the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate, and collecting and calculating relevant signals in real time, the system can quickly detect hydrogen leakage or abnormal pressure, and automatically take corresponding treatment measures, such as cutting off the intake valve, turning on the exhaust fan, reducing the electronic load power, etc., to avoid accidents caused by human negligence. At the same time, in the embodiment of the present application, by monitoring and automatically adjusting parameters such as hydrogen pressure and concentration in real time, the system can ensure hydrogen safety monitoring and automatic processing during the test, thereby ensuring the safety of the test. Further, the embodiment of the present application processes in gradients according to different risk levels, can take corresponding measures according to different risk levels, ensure the safety of the test process, and at the same time reduce unnecessary emergency shutdowns, improving the test efficiency and reliability.

[0058] In a third aspect, the embodiment of the present application provides a fuel cell test bench safety monitoring and execution device. The fuel cell test bench safety monitoring and execution device includes a processor, a memory, and a fuel cell test bench safety monitoring and execution program stored on the memory and executable by the processor. When the fuel cell test bench safety monitoring and execution program is executed by the processor, it implements the steps of the fuel cell test bench safety monitoring and execution method in any of the above embodiments.

[0059] The fuel cell test bench safety monitoring and execution device can be a device with data processing functions such as a personal computer (PC), a laptop computer, a server, etc.

[0060] In the embodiment of the present application, the fuel cell test bench safety monitoring and execution device may include a processor, a memory, a communication interface, and a communication bus.

[0061] Among them, the communication bus can be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0062] The communication interface includes interfaces such as input / output (I / O) interfaces, physical interfaces, and logical interfaces, which are used to implement the interconnection of components inside the fuel cell test bench safety monitoring execution device, as well as interfaces for implementing the interconnection between the fuel cell test bench safety monitoring execution device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, a fiber optic interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[0063] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical memory, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0064] The processor can be a general-purpose processor, which can call the fuel cell test bench safety monitoring execution program stored in the memory and execute the fuel cell test bench safety monitoring execution method provided by the embodiments of the present application. For example, the general-purpose processor can be a central processing unit (CPU). Among them, the method executed when the fuel cell test bench safety monitoring execution program is called can refer to the various embodiments of the fuel cell test bench safety monitoring execution method of the present application, which will not be elaborated here.

[0065] In a fourth aspect, the embodiments of the present application provide a computer-readable storage medium, on which a fuel cell test bench safety monitoring execution program is stored. When the fuel cell test bench safety monitoring execution program is executed by a processor, the steps of the fuel cell test bench safety monitoring execution method in any of the above embodiments are implemented.

[0066] A fuel cell test bench safety monitoring execution program is stored on the computer-readable storage medium of the present application. When the fuel cell test bench safety monitoring execution program is executed by a processor, the steps of the fuel cell test bench safety monitoring execution method as described above are implemented.

[0067] Among them, the method implemented when the fuel cell test bench safety monitoring execution program is executed can refer to the various embodiments of the fuel cell test bench safety monitoring execution method of the present application, which will not be elaborated here.

[0068] It should be noted that the serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments.

[0069] The terms "including" and "having" and any variations thereof in the description of the specification, claims and the above drawings of the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices. The descriptions of terms such as "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit that "first", "second" and "third" are different types.

[0070] In the description of the embodiments of the present application, words such as "exemplary", "for example" or "for illustration" are used to indicate examples, illustrations or explanations. Any embodiment or design solution described as "exemplary", "for example" or "for illustration" in the embodiments of the present application should not be construed as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary", "for example" or "for illustration" is intended to present relevant concepts in a specific manner.

[0071] In the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; "and / or" in the text is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.

[0072] In some processes described in the embodiments of the present application, a plurality of operations or steps appear in a specific order. However, it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or may be executed in parallel. The serial numbers of the operations are only used to distinguish different operations, and the serial numbers themselves do not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed in sequence or in parallel, and these operations or steps may be combined.

[0073] Through the description of the above embodiments, those skilled in the art can clearly understand that the above method of the embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above and includes several instructions for causing a terminal device to execute the methods described in various embodiments of the present application.

[0074] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A safety monitoring execution method for a fuel cell test bench, characterized in that, Comprising: Respectively set reference values for the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate, and collect the hydrogen pressure signal and hydrogen concentration signal in the test bench; Based on the collected hydrogen pressure signal and hydrogen concentration signal, calculate the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate in the test bench; Compare the calculated hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate with the set reference values respectively to adjust the working state of the test bench.

2. The method for implementing safety monitoring of a fuel cell test bench according to claim 1, wherein: The reference value of the hydrogen pressure change rate includes a first pressure change rate reference value; The reference value of the hydrogen concentration value includes a first concentration reference value and a second concentration reference value, and the first concentration reference value is less than the second concentration reference value; The reference value of the hydrogen concentration change rate includes a first concentration change rate reference value.

3. The safety monitoring execution method of the fuel cell test bench according to claim 2, wherein The adjustment of the working state of the test bench is specifically: When the calculated hydrogen pressure change rate is greater than the first pressure change rate reference value, cut off the power supply of the test bench electronic load and turn on the exhaust device at a first preset power.

4. The method for implementing safety monitoring of a fuel cell test bench according to claim 2, wherein The adjustment of the working state of the test bench is specifically: When the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, the hydrogen concentration value is greater than or equal to the first concentration reference value and less than the second concentration reference value, and the calculated hydrogen concentration change rate is less than the first concentration change rate reference value, control the test bench electronic load to operate at a preset limit power and turn on the exhaust device at a second preset power; When the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value, the hydrogen concentration value is greater than or equal to the first concentration reference value and less than the second concentration reference value, and the calculated hydrogen concentration change rate is greater than or equal to the first concentration change rate reference value, control the test bench electronic load to operate at a preset limit power and turn on the exhaust device at a third preset power.

5. The method for executing safety monitoring of a fuel cell test bench according to claim 2, characterized in that, The adjustment of the working state of the test bench is specifically: When the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is greater than or equal to the second concentration reference value, cut off the power supply of the test bench electronic load and turn on the exhaust device at a first preset power.

6. The safety monitoring execution method of the fuel cell test bench according to claim 2, characterized in that The adjustment of the working state of the test bench is specifically: When the calculated hydrogen pressure change rate is less than or equal to the first pressure change rate reference value and the hydrogen concentration value is less than the first concentration reference value, control the test bench electronic load to operate normally and control the exhaust device to close.

7. The safety monitoring execution method of the fuel cell test bench according to claim 1, wherein The collection of the hydrogen pressure signal and hydrogen concentration signal in the test bench is specifically: Collect the hydrogen pressure signal in the test bench through a pressure sensor arranged in the test bench, and collect the hydrogen concentration signal in the test bench through a hydrogen probe arranged in the test bench.

8. An execution device for safety monitoring of a fuel cell test bench, characterized in that, Comprising: A collection module for respectively setting reference values for the hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate, and collecting the hydrogen pressure signal and hydrogen concentration signal in the test bench; A calculation module, configured to calculate a hydrogen pressure change rate, a hydrogen concentration value, and a hydrogen concentration change rate within the test bench based on the collected hydrogen pressure signal and hydrogen concentration signal; An adjustment module, configured to compare the calculated hydrogen pressure change rate, hydrogen concentration value, and hydrogen concentration change rate with set reference values respectively to adjust the working state of the test bench.

9. A safety monitoring execution device for a fuel cell test bench, characterized in that, The fuel cell test bench safety monitoring execution device includes a processor, a memory, and a fuel cell test bench safety monitoring execution program stored on the memory and executable by the processor. When the fuel cell test bench safety monitoring execution program is executed by the processor, the steps of the fuel cell test bench safety monitoring execution method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium, characterized in that, A fuel cell test bench safety monitoring execution program is stored on the computer-readable storage medium. When the fuel cell test bench safety monitoring execution program is executed by a processor, the steps of the fuel cell test bench safety monitoring execution method according to any one of claims 1 to 7 are implemented.

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