A method, system and device for switching hydrogen storage medium of a hydrogen fuel cell

Abstract

The present application relates to the field of hydrogen fuel power supply technology, and discloses a method, system and device for switching the hydrogen storage medium of a hydrogen fuel cell, wherein the method includes obtaining the hydrogen supply rate of the current hydrogen storage medium of the hydrogen fuel cell; comparing the hydrogen supply rate of the current hydrogen storage medium with a specified threshold to determine whether to perform a switching operation; in the case of determining to perform a switching operation, obtaining the comprehensive fitness of one or more candidate hydrogen storage media, and screening the candidate hydrogen storage media according to the comprehensive fitness of each candidate hydrogen storage medium; determining the target hydrogen storage medium based on the screening result, and performing the switching of the hydrogen storage medium according to the applicable parameters of the target hydrogen storage medium. The technical solution provided by one or more embodiments of the present disclosure quickly determines and switches the hydrogen storage medium of a hydrogen fuel cell by performing adaptability screening on the hydrogen storage medium.

Description

Technical Field

[0001] The present application relates to the field of hydrogen fuel cells, and in particular to a method, system and device for switching hydrogen storage media of hydrogen fuel cells. Background Art

[0002] During the operation of a hydrogen fuel cell, hydrogen is released from the hydrogen storage system, converted from a storage state to a flow state, and transported through a pipeline to the anode of the hydrogen fuel cell, where an oxidation reaction occurs to release electrical energy.

[0003] At present, there are many hydrogen storage methods in hydrogen storage systems, including high-pressure gaseous hydrogen storage, liquid hydrogen storage, metal hydride hydrogen storage, adsorption hydrogen storage, etc. Most hydrogen storage methods are suitable for different usage needs and scenarios.

[0004] However, in the process of hydrogen fuel cell power supply, due to changes in external conditions or different system requirements, it is often necessary to switch the hydrogen storage method of the hydrogen storage system. How to select the appropriate hydrogen storage method according to the actual situation and switch the hydrogen storage method efficiently and smoothly has become a research focus in the current field of hydrogen energy research. Summary of the invention

[0005] One or more embodiments of the present application provide a method, system and device for switching hydrogen storage media of a hydrogen fuel cell, which quickly determines and switches the applicable hydrogen storage medium by performing adaptability screening on different hydrogen storage media.

[0006] In a first aspect, the present application provides a method for switching a hydrogen storage medium of a hydrogen fuel cell, the method comprising: obtaining operating parameters of a hydrogen fuel cell, and determining a hydrogen supply rate of a current hydrogen storage medium according to the operating parameters; comparing the hydrogen supply rate of the current hydrogen storage medium with a specified threshold value to determine whether to perform a switching operation; in the case of determining that a switching operation is to be performed, obtaining a comprehensive fitness of one or more candidate hydrogen storage media, and screening the candidate hydrogen storage media according to the comprehensive fitness of each candidate hydrogen storage medium; determining a target hydrogen storage medium based on the screening result, and performing switching of the hydrogen storage medium according to applicable parameters of the target hydrogen storage medium.

[0007] According to a second aspect of the present application, there is provided a switching system for a hydrogen fuel cell hydrogen storage medium, the system comprising: an initial unit for acquiring operating parameters of the hydrogen fuel cell and determining a hydrogen supply rate of a current hydrogen storage medium according to the operating parameters; a judgment unit for acquiring the hydrogen supply rate of the current hydrogen storage medium and comparing the hydrogen supply rate of the current hydrogen storage medium with a specified threshold to determine whether to perform a switching operation; a screening unit for screening one or more candidate hydrogen storage media when it is determined that a switching operation is to be performed, and determining a target hydrogen storage medium based on the screening results; and a switching unit for switching the hydrogen storage medium according to applicable parameters of the target hydrogen storage medium.

[0008] A third aspect of the present application provides an electronic device, which includes a memory and a processor, wherein the memory is used to store a computer program, and when the computer program is executed by the processor, the above-mentioned method for switching the hydrogen storage medium of a hydrogen fuel cell is implemented.

[0009] A fourth aspect of the present application provides a computer-readable storage medium, which is used to store a computer program. When the computer program is executed by a processor, it implements the above-mentioned method for switching the hydrogen storage medium of a hydrogen fuel cell.

[0010] The technical solution provided by one or more embodiments of the present application can quickly determine and switch the applicable hydrogen storage medium. Specifically, the hydrogen supply rate of the current hydrogen storage medium is calculated according to the current operating parameters of the hydrogen fuel cell, and it is determined whether the hydrogen storage medium needs to be switched. If switching is required, the comprehensive adaptability of each candidate hydrogen storage medium to the different environmental parameters of the current hydrogen fuel cell is calculated, and the hydrogen storage medium for switching is determined according to the comprehensive adaptability, and the current hydrogen storage medium of the hydrogen fuel cell is switched according to the characteristics of the hydrogen storage medium for switching, so as to ensure the stability and applicability of the switching process.

[0011] It can be seen that the technical solution provided in the present application can quickly select a hydrogen storage medium suitable for the hydrogen fuel cell by obtaining the compatibility of the environmental parameters of the hydrogen fuel cell and different hydrogen storage media, and while switching the original hydrogen storage medium, ensure the stability and applicability of the switching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1A schematic diagram showing the steps of a method for switching hydrogen storage medium of a hydrogen fuel cell in one embodiment of the present application is shown;

[0014] Figure 2 A flowchart showing the steps of determining a target hydrogen storage medium in one embodiment of the present application is shown;

[0015] Figure 3 A functional module schematic diagram of a switching device for hydrogen storage medium of a hydrogen fuel cell in one embodiment of the present application is shown;

[0016] Figure 4 A schematic structural diagram of an electronic device in one embodiment of the present application is shown. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0018] In addition, the descriptions involving "first", "second", etc. in this application are for descriptive purposes only and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, unless otherwise specified, "multiple" means two or more. In addition, the use of "based on" or "according to" means openness and inclusiveness, because the process, steps, calculations or other actions "based on" or "according to" one or more of the conditions or values ​​can be based on additional conditions or beyond the described values ​​in practice.

[0019] At present, the hydrogen storage system is responsible for storing hydrogen to provide hydrogen fuel cells with hydrogen for redox reactions to generate electricity. The hydrogen storage system can adopt a variety of hydrogen storage methods, including high-pressure gaseous hydrogen storage, liquid hydrogen storage, metal hydride hydrogen storage and adsorption hydrogen storage. Among them, high-pressure gaseous hydrogen storage is suitable for scenarios that require rapid charging and discharging, liquid hydrogen storage is suitable for scenarios that require long-term storage of hydrogen, and metal hydride hydrogen storage and adsorption hydrogen storage are suitable for scenarios that pursue higher safety and lower pressure.

[0020] However, during the power supply process of hydrogen fuel cells, it is often necessary to switch the hydrogen storage method of the hydrogen storage system. How to choose a suitable hydrogen storage method and switch the hydrogen storage method efficiently and smoothly while ensuring stable hydrogen supply has become a research focus in the current field of hydrogen energy research and application.

[0021] In view of this, one or more embodiments of the present application provide a method, device and equipment for switching the hydrogen storage medium of a hydrogen fuel cell, which can solve the above-mentioned problems by performing adaptability screening on the hydrogen storage medium to quickly determine and switch the hydrogen storage medium of the hydrogen fuel cell.

[0022] See also Figure 1 In one embodiment of the present application, a method for switching a hydrogen storage medium of a hydrogen fuel cell is provided. The method may include the following steps:

[0023] S1: obtaining the hydrogen supply rate of the current hydrogen storage medium, comparing the hydrogen supply rate of the current hydrogen storage medium with a specified threshold, and determining whether to perform a switching operation.

[0024] In this embodiment, the hydrogen supply rate of the current hydrogen storage medium must first be obtained. The hydrogen supply rate of the current hydrogen storage medium can be inferred based on the propagation rate of sound waves in hydrogen, or it can be derived based on the operating parameters of the hydrogen fuel cell, where the operating parameters of the hydrogen fuel cell include operating voltage, operating current and operating temperature. Taking the derivation of the operating parameters of the hydrogen fuel cell as an example, the hydrogen fuel cell can establish a hydrogen supply rate model to derive the hydrogen supply rate of the current hydrogen storage medium. Optionally, the hydrogen supply rate f=kV+bI+cT+d is determined by multiple linear regression, where V is the operating voltage, I is the operating current, T is the operating temperature, k, b, c are the fitting coefficients of the operating voltage V, operating current I, and operating temperature T, respectively, and d is a constant. By obtaining the operating parameters of the hydrogen fuel cell under different states, the model is fitted using the multiple linear regression method, and the fitting coefficients k, b, c and constant d are solved. Based on the above hydrogen supply rate model, the operating parameters of the current hydrogen fuel cell are obtained through the sensor, and the hydrogen supply rate of the current hydrogen storage medium can be calculated.

[0025] In this embodiment, after obtaining the hydrogen supply rate of the current hydrogen storage medium, it is determined whether a switching operation is required based on actual needs. Specifically, the hydrogen supply rate of the current hydrogen storage medium is compared with a preset specified threshold, and it is determined whether a switching operation is required based on the comparison result. If the hydrogen supply rate of the current hydrogen storage medium is greater than or equal to the specified threshold, it is determined that no switching operation is performed, and the hydrogen fuel cell continues to use the current hydrogen storage medium; if the hydrogen supply rate of the current hydrogen storage medium is less than the specified threshold, it is determined that a switching operation is performed, and the current hydrogen storage medium is not applicable, and the hydrogen fuel cell needs to switch the hydrogen storage medium.

[0026] In one embodiment, the operating parameters of the current hydrogen fuel cell are obtained by sensors, and the hydrogen supply rate of the current hydrogen storage medium is calculated. Specifically, a SHT31 temperature and humidity sensor, an inductive voltage sensor, and a Hall effect current sensor can be installed in the hydrogen fuel cell to collect the operating temperature T, operating voltage V, and operating current I in real time. The above parameters are transmitted to the hydrogen supply rate model to calculate the hydrogen supply rate of the current hydrogen storage medium. If the current hydrogen supply rate is calculated to be 1NL / min based on the actual data, and the preset designated threshold is 5NL / min, that is, the actual current hydrogen supply rate is lower than the designated threshold, and a hydrogen storage medium switching operation is required. It should be noted that after the hydrogen storage medium is switched, the system continuously monitors the hydrogen supply rate of the new hydrogen storage medium and dynamically adjusts the hydrogen supply strategy according to real-time data.

[0027] S3: When it is determined that a switching operation is to be performed, the comprehensive adaptability of one or more candidate hydrogen storage media is obtained, and the candidate hydrogen storage media are screened according to the comprehensive adaptability of each candidate hydrogen storage medium.

[0028] In this embodiment, if it is necessary to switch the hydrogen storage medium, a suitable hydrogen storage medium is selected for switching according to the comprehensive compatibility of each candidate hydrogen storage medium with the current hydrogen fuel cell. At present, the candidate hydrogen storage medium may include high-pressure gaseous hydrogen storage, liquid hydrogen storage and metal hydride hydrogen storage. Each hydrogen storage medium has its own applicable parameters including hydrogen storage density, release rate, applicable pressure, applicable temperature and applicable flow rate. The environmental parameters of the hydrogen fuel cell that can be obtained during operation include operating temperature, operating frequency, operating pressure and operating humidity.

[0029] In this embodiment, the comprehensive fitness of each candidate hydrogen storage medium and the hydrogen fuel cell is calculated. For any candidate hydrogen storage medium, the fitness between each applicable parameter of the candidate hydrogen storage medium and the environmental parameter is determined, and the comprehensive fitness between the candidate hydrogen storage medium and the environmental parameter of the hydrogen fuel cell is determined based on each applicable parameter and the weight value pre-assigned to each applicable parameter. Specifically, the fitness of the environmental parameter and each applicable parameter of the candidate hydrogen storage medium is first determined. The KNN (K-NearestNeighbor, nearest neighbor algorithm) algorithm can be used to calculate the fitness of each applicable parameter of the candidate hydrogen storage medium and the current corresponding environmental parameter based on the Euclidean distance. , is an environmental parameter of hydrogen fuel cells, It is an applicable parameter corresponding to the hydrogen storage medium. The weighted average of the applicable parameters of the candidate hydrogen storage medium is used to calculate the comprehensive fitness. When weighted averaging, key parameters such as hydrogen storage density and release rate are given higher weights to ensure that the hydrogen supply demand of hydrogen fuel cells can be met.

[0030] In one embodiment, the environmental parameters of the current hydrogen fuel cell are collected by sensors, and the comprehensive adaptability of each candidate hydrogen storage medium is calculated. Specifically, the hydrogen fuel cell can be equipped with an SHT31 temperature and humidity sensor, an MPU6050 vibration sensor, and an MS5611 pressure sensor to collect environmental temperature, humidity, vibration frequency, and pressure data in real time, and the adaptability of each applicable parameter of the candidate hydrogen storage medium is calculated based on the above environmental parameters. Taking metal hydride as an example, its hydrogen storage density is 2~0wt%, release rate is 1~0L / min, applicable pressure is 1~0MPa, applicable flow rate is 0~10L / min, and applicable temperature is 20~80℃. According to the adaptability , the adaptability of each applicable parameter of metal hydride can be calculated. Taking the applicable temperature as an example, if the operating temperature of the current environment is 25°C, the degree of proximity to the applicable temperature of metal hydride 20~80°C is 9, that is, the adaptability of the applicable temperature of metal hydride is 9. The adaptability of each applicable parameter of metal hydride is weighted according to the preset weight, and the comprehensive adaptability of metal hydride is 85. The comprehensive adaptability of all candidate hydrogen storage media is calculated, and all candidate hydrogen storage media are sorted from high to low according to the value of comprehensive adaptability.

[0031] S5: Determine a target hydrogen storage medium based on the sorting result, and switch the hydrogen storage medium according to applicable parameters of the target hydrogen storage medium.

[0032] In this embodiment, based on the above ranking results, all candidate hydrogen storage media are screened, and the target hydrogen storage medium is determined based on the screening results. Figure 2 , first determine the hydrogen storage medium with the highest comprehensive adaptability as the hydrogen storage medium for switching, and judge whether the current hydrogen storage medium meets the specified capacity threshold, and the specified capacity threshold is the minimum hydrogen storage capacity percentage required for the hydrogen storage medium. Exemplarily, the specified capacity threshold required by the system is 5%, which means that in order to meet the operation and design requirements of the system, the hydrogen storage medium must be able to store at least 5% of its own weight of hydrogen. If the current hydrogen storage medium reaches the specified capacity threshold, it is also necessary to judge whether the comprehensive cost value of the hydrogen storage medium reaches the specified cost threshold. The comprehensive cost value is obtained by weighting the time cost and safety risk of the switching process. If the comprehensive cost value of the current hydrogen storage medium is lower than the specified cost threshold, the current hydrogen storage medium is determined as the target hydrogen storage medium for the final switching.

[0033] In this embodiment, the comprehensive cost value is obtained by weighting the time cost and safety risk of the switching process. The switching process of the hydrogen fuel cell specifically includes cooling, vacuuming, passing hydrogen, heating and maintaining pressure. For each step, the time cost of each step is calculated by time T=C×R, where C is the operation difficulty coefficient and R is the risk coefficient. Then, the time cost of each step is weighted and summed according to the preset step weight. At the same time, the safety risk of each step can be calculated by the fuzzy comprehensive evaluation method, and the safety risk of each step is weighted and summed according to the preset step weight. The weighted summed comprehensive time cost and comprehensive safety risk are weighted and summed again according to the preset cost weight to obtain the comprehensive cost value of the current hydrogen storage medium.

[0034] Exemplarily, the comprehensive cost value of the switching process of metal hydride is calculated. Specifically, the switching process of metal hydride mainly includes the steps of cooling to -20°C, evacuating to 1Pa, introducing hydrogen and heating to 200°C, and maintaining pressure for 1h. For each of the above steps, the time cost value is calculated by the formula T=C×R, and the time cost value of each step is weighted and summed to obtain a comprehensive time cost of 5h. At the same time, the fuzzy comprehensive evaluation method is used to calculate the safety risk value of each step, and the comprehensive safety risk of the switching process is 3 after weighted average. Then, according to the comprehensive time cost and comprehensive safety risk, the weighted summation method is used to calculate the comprehensive cost value of the switching process. If the preset cost weights of the comprehensive time cost and comprehensive safety risk are set to 6 and 4 respectively, the comprehensive cost value can be obtained to be 4.2. The specified cost threshold is set to 4.5. Since the comprehensive cost value of the switching process does not exceed the specified cost threshold, metal hydride can be used as the target hydrogen storage medium for switching.

[0035] See also Figure 2 In one embodiment, based on the sorting result, the hydrogen storage medium with the highest comprehensive adaptability is determined to be the first adaptive hydrogen storage medium, and it is determined whether the hydrogen storage capacity of the first adaptive hydrogen storage medium reaches a specified capacity threshold. If it reaches the specified capacity threshold, the first adaptive hydrogen storage medium is determined to be the second adaptive hydrogen storage medium, and it is determined whether the comprehensive cost value of the second adaptive hydrogen storage medium is lower than the specified cost threshold. If it is lower than the specified cost threshold, the second adaptive hydrogen storage medium is determined to be the target hydrogen storage medium for switching.

[0036] See also Figure 2 In one embodiment, if the hydrogen storage capacity of the first suitable hydrogen storage medium does not reach the specified capacity threshold, the first suitable hydrogen storage medium is re-determined according to the sorting result from high to low, and the first suitable hydrogen storage medium that meets the specified capacity threshold is determined as the second suitable hydrogen storage medium. It is determined whether the comprehensive cost value of the second suitable hydrogen storage medium is lower than the specified cost threshold. If it is lower than the specified cost threshold, the second suitable hydrogen storage medium is determined as the target hydrogen storage medium for switching.

[0037] See also Figure 2 In one embodiment, if the comprehensive cost value of the second adaptive hydrogen storage medium is greater than or equal to the specified cost threshold, the second adaptive hydrogen storage medium that meets the specified capacity threshold requirement and the specified cost threshold requirement is re-determined according to the sorting results from high to low, and is determined as the target hydrogen storage medium for switching.

[0038] In this embodiment, the switching of the hydrogen storage medium is performed according to the applicable parameters of the target hydrogen storage medium. First, according to the applicable parameters of the target hydrogen storage medium, the operating parameters of the hydrogen fuel cell including the operating pressure, operating temperature and hydrogen supply rate are dynamically adjusted so that the hydrogen fuel cell reaches the best working state under the current environment to adapt to the smooth switching of the hydrogen storage medium. At the same time, the hydrogen supply rate of the hydrogen fuel cell is adjusted. Specifically, the historical switching data of the hydrogen fuel cell including the hydrogen supply flow rate data and the power change data are obtained, and the historical switching data is processed and constructed into a time series data set. The LSTM (Long Short-Term Memory) algorithm can be used to obtain the prediction curve of the hydrogen supply flow rate and power change of the target hydrogen storage medium with the historical time series as input. The above prediction curve is feature analyzed to extract the key feature points of the prediction curve, such as the peak value, valley value and inflection point of the curve, and the above prediction curve is divided into different intervals according to the key feature points. The hydrogen supply rate is dynamically adjusted according to the characteristics of the above different intervals. Specifically, the hydrogen supply rate is slowed down in the interval where the prediction curve changes violently, and the hydrogen supply rate is accelerated in the interval where the prediction curve changes smoothly, so as to achieve a smooth transition of switching the hydrogen storage medium. Among them, the regulation of the hydrogen supply rate can be achieved by adjusting the valve opening between the hydrogen fuel cell and the hydrogen storage system, closing the valve corresponding to the original hydrogen storage medium of the hydrogen fuel cell, opening the valve corresponding to the target hydrogen storage medium, and dynamically adjusting the valve opening of the target hydrogen storage medium according to the change in hydrogen supply rate represented by the prediction curve.

[0039] Exemplarily, in one embodiment, the hydrogen supply flow rate and power change data are extracted from the historical switching data, a time series data set is constructed based on the above historical switching data, and the prediction model is trained using the LSTM algorithm. In this process, the number of hidden layer nodes is set to 128, the learning rate is set to 0.1, and 1000 iterations are performed to obtain the prediction curve of the hydrogen supply flow rate and power change. Through the analysis of the characteristics of the curve, we will reduce the switching rate by 20% in the interval where the hydrogen supply flow rate change rate exceeds 5% or the power change rate exceeds 10%, and increase it by 10% in other intervals. Optionally, the change of hydrogen storage capacity from 1 cubic meter to 10 cubic meters can be simulated. If the buffer capacity is 5 cubic meters, the fluctuation of the hydrogen supply flow rate is less than 3%, and the power fluctuation is less than 5%, which means that a relatively stable switching of the hydrogen storage medium can be achieved.

[0040] In one embodiment, a Q-learning (Q-learning, a reinforcement learning algorithm) algorithm can be used to optimize the valve opening, wherein the learning rate is set to 1, the discount factor is 0.9, the exploration probability is 0.02, and 500 iterations are performed to find the optimal valve switching sequence. According to the rate adjustment information represented by the prediction curve and the optimized valve switching sequence, a smooth transition of the hydrogen storage medium switching operation is achieved.

[0041] In one embodiment, during the switching of the hydrogen storage medium, an emergency response mechanism may be activated to deal with emergencies. Specifically, the hydrogen supply flow and power changes of the hydrogen fuel cell are monitored in real time, and if there is a deviation from a preset curve, exceeding a specified capacity threshold, or exceeding a specified cost threshold, the backup hydrogen storage medium is immediately activated.

[0042] In view of this, the technical solution provided by one or more embodiments of the present disclosure can quickly determine and switch the applicable hydrogen storage medium. Specifically, the hydrogen supply rate of the current hydrogen storage medium is calculated according to the current operating parameters of the hydrogen fuel cell, and it is determined whether the hydrogen storage medium needs to be switched. If switching is required, the compatibility between the environmental parameters of the hydrogen fuel cell and different hydrogen storage media is obtained, and the hydrogen storage medium suitable for the hydrogen fuel cell can be quickly selected. While switching the original hydrogen storage medium, the stability and applicability of the switching process are ensured.

[0043] According to an embodiment of the present application, an embodiment of a method for switching the hydrogen storage medium of a hydrogen fuel cell is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0044] See also Figure 3 In one embodiment of the present application, a switching system for hydrogen storage medium of a hydrogen fuel cell is provided, and the system may include the following multiple units:

[0045] The judging unit 100 is used to obtain the hydrogen supply rate of the current hydrogen storage medium, compare the hydrogen supply rate of the current hydrogen storage medium with a specified threshold, and judge whether to perform a switching operation;

[0046] A screening unit 200 is used to screen one or more candidate hydrogen storage media when it is determined that a switching operation is to be performed, and determine a target hydrogen storage medium based on the screening result;

[0047] The switching unit 300 is used to switch the hydrogen storage medium according to the applicable parameters of the target hydrogen storage medium.

[0048] In one embodiment, the judgment unit 100 is specifically used to obtain operating parameters of the hydrogen fuel cell, determine the hydrogen supply rate of the current hydrogen storage medium according to the operating parameters, compare the hydrogen supply rate of the current hydrogen storage medium with a specified threshold, and determine whether to perform a switching operation.

[0049] In one embodiment, the screening unit 200 is specifically used to obtain the comprehensive fitness of one or more candidate hydrogen storage media when judging to perform a switching operation, sort the candidate hydrogen storage media according to the comprehensive fitness of each candidate hydrogen storage medium, and screen the hydrogen storage capacity and comprehensive cost value of each candidate medium according to the sorting result.

[0050] In one embodiment, the switching unit 300 is specifically used to adjust the operating parameters of the hydrogen fuel cell according to the applicable parameters of the target hydrogen storage medium and perform the switching of the hydrogen storage medium.

[0051] The further functional description of each of the above modules and units is the same as that of the above corresponding embodiments and will not be repeated here.

[0052] In this embodiment, a switching system for hydrogen fuel cell hydrogen storage medium is presented in the form of a functional unit, where the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and memory that executes one or more software or fixed programs, and / or other devices that can provide the above functions.

[0053] See also Figure 4 , Figure 4 is a schematic diagram of the structure of a computer device provided in an embodiment of the present application, such as Figure 4 As shown, the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including high-speed interfaces and low-speed interfaces. Various components are connected to each other using different buses for communication, and can be installed on a common mainboard or installed in other ways as needed. The processor can process the instructions executed in the computer device, including instructions stored in or on the memory to display the graphical information of the GUI on an external input / output device (such as, a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a group of blade servers, or a multi-processor system). Figure 4 A processor 10 is taken as an example.

[0054] The processor 10 may be a central processing unit, a network processor or a combination thereof. The processor 10 may further include a hardware chip. The hardware chip may be a dedicated integrated circuit, a programmable logic device or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general purpose array logic or any combination thereof.

[0055] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiment.

[0056] The memory 20 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; the data storage area may store data created according to the use of the computer device, etc. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transient memory, such as at least one disk storage device, a flash memory device, or other non-transient solid-state storage device. In some optional embodiments, the memory 20 may optionally include a memory remotely arranged relative to the processor 10, and these remote memories may be connected to the computer device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0057] The memory 20 may include a volatile memory, such as a random access memory; the memory may also include a non-volatile memory, such as a flash memory, a hard disk or a solid state drive; the memory 20 may also include a combination of the above types of memory.

[0058] The computer device further comprises a communication interface 30 for the computer device to communicate with other devices or a communication network.

[0059] The embodiment of the present application also provides a computer-readable storage medium. The above method according to the embodiment of the present application can be implemented in hardware, firmware, or can be implemented as a computer code that can be recorded in a storage medium, or can be implemented as a computer code that is originally stored in a remote storage medium or a non-temporary machine-readable storage medium and will be stored in a local storage medium through a network download, so that the method described herein can be stored in such software processing on a storage medium using a general-purpose computer, a dedicated processor, or programmable or dedicated hardware. Among them, the storage medium can be a magnetic disk, an optical disk, a read-only storage memory, a random access memory, a flash memory, a hard disk or a solid-state hard disk, etc.; further, the storage medium can also include a combination of the above types of memories. It can be understood that a computer, a processor, a microprocessor controller, or programmable hardware includes a storage component that can store or receive software or computer code. When the software or computer code is accessed and executed by a computer, a processor, or hardware, the method shown in the above embodiment is implemented.

[0060] The embodiment of the present application provides a computer program product, which includes computer instructions, which are stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method of any embodiment of the present application.

[0061] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

[0062] The systems or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, the computer may be, for example, a personal computer, a laptop computer, a cellular phone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

[0063] For the convenience of description, the above device is described in various units according to their functions. Of course, when implementing the present application, the functions of each unit can be implemented in the same or multiple software and / or hardware.

[0064] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt 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 codes.

[0065] The present application is described with reference to the flowcharts and / or block diagrams of the methods, systems, and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the 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 generate 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.

[0066] 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.

[0067] 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.

[0068] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0069] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0070] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0071] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A method for switching hydrogen storage medium of a hydrogen fuel cell, characterized in that: The method comprises: Obtaining a hydrogen supply rate of a current hydrogen storage medium, comparing the hydrogen supply rate of the current hydrogen storage medium with a specified threshold, and determining whether to perform a switching operation; In the case of determining to perform a switching operation, obtaining comprehensive fitness of a plurality of candidate hydrogen storage media, and screening the candidate hydrogen storage media according to the comprehensive fitness of each candidate hydrogen storage medium, wherein the candidate hydrogen storage media include high-pressure gaseous hydrogen storage, liquid hydrogen storage and metal hydride hydrogen storage; Determining a target hydrogen storage medium based on the screening result, and switching the hydrogen storage medium according to applicable parameters of the target hydrogen storage medium; Wherein, in the case of determining to perform a switching operation, obtaining the comprehensive adaptability of multiple candidate hydrogen storage media includes: Acquire environmental parameters of the hydrogen fuel cell, and determine the compatibility of the environmental parameters with various applicable parameters of any candidate hydrogen storage medium, wherein the environmental parameters include operating temperature, operating frequency, operating pressure and operating humidity, and the applicable parameters include hydrogen storage density, release rate, applicable pressure, applicable temperature and applicable flow rate; Determining the comprehensive adaptability of the hydrogen storage medium and the environmental parameters based on the adaptability of each of the applicable parameters and the preset weight values ​​of the applicable parameters; Among them, the KNN algorithm is used to calculate the adaptability of each applicable parameter of the candidate hydrogen storage medium and the current corresponding environmental parameters based on the Euclidean distance.

2. The method according to claim 1, characterized in that Determining the hydrogen supply rate of the current hydrogen storage medium includes: Acquire operating parameters of the hydrogen fuel cell under different operating states, and determine fitting coefficients according to the operating parameters, wherein the fitting coefficients include a coefficient k of operating voltage, a coefficient b of operating current, a coefficient c of operating temperature, and a constant d; According to the fitting coefficient, the hydrogen supply rate f of the current hydrogen storage medium is determined, wherein the hydrogen supply rate f=kV+bI+cT+d, V is the operating voltage, I is the operating current, and T is the operating temperature.

3. The method according to claim 1, characterized in that Comparing the hydrogen supply rate of the current hydrogen storage medium with a specified threshold and determining whether to perform a switching operation includes: If the current hydrogen supply rate of the hydrogen storage medium is greater than or equal to the specified threshold, it is determined that the switching operation is not performed; If the current hydrogen supply rate of the hydrogen storage medium is less than a specified threshold, it is determined to perform a switching operation.

4. The method according to claim 1, characterized in that: According to the comprehensive fitness of each candidate hydrogen storage medium, the candidate hydrogen storage medium is screened, and based on the screening result, the target hydrogen storage medium is determined to include: Sorting the candidate hydrogen storage media according to their comprehensive adaptability, determining a first suitable hydrogen storage medium based on the sorting result, and obtaining the hydrogen storage capacity of the first suitable hydrogen storage medium; If the hydrogen storage capacity of the first suitable hydrogen storage medium is less than a specified capacity threshold, determining a second suitable hydrogen storage medium based on the sorting result, and obtaining a comprehensive cost value of the second suitable hydrogen storage medium; If the comprehensive cost value of the second suitable hydrogen storage medium is less than a specified cost threshold, the second suitable hydrogen storage medium is used as the target hydrogen storage medium.

5. The method according to claim 4, characterized in that The comprehensive cost value of obtaining the second suitable hydrogen storage medium includes: According to the switching process of the second adapted hydrogen storage medium, a time cost value and a safety risk value of the switching process are obtained, wherein the switching process includes cooling, vacuuming, passing hydrogen, heating and maintaining pressure; The time cost value and the security risk value of each step of the switching process are weighted according to a preset weight to determine the comprehensive time cost and comprehensive security risk of the switching process; The comprehensive time cost and comprehensive security risk are weighted according to a preset cost weight to determine a comprehensive cost value of the switching process.

6. The method according to claim 4, characterized in that The method further comprises: If the hydrogen storage capacity of the first adapted hydrogen storage medium is greater than or equal to a specified capacity threshold, the first adapted hydrogen storage medium is determined to be a second adapted hydrogen storage medium.

7. The method according to claim 4, characterized in that The method further comprises: If the comprehensive cost value of the second suitable hydrogen storage medium is greater than or equal to a specified cost threshold, the second suitable hydrogen storage medium is re-determined based on the ranking result.

8. The method according to claim 1, characterized in that According to the applicable parameters of the target hydrogen storage medium, executing the switching of the hydrogen storage medium includes: According to the applicable parameters of the target hydrogen storage medium, adjusting the operating parameters of the hydrogen fuel cell, the operating parameters including operating pressure, operating temperature and hydrogen supply rate; A prediction adjustment is performed for the hydrogen supply rate, a prediction curve of the hydrogen supply flow rate and power change of the target hydrogen storage medium is obtained, an interval characteristic analysis is performed on the prediction curve, and the valve opening in different intervals is adjusted based on the analysis result, and the hydrogen supply rate of the hydrogen storage medium is adjusted according to the valve opening.

9. A switching device for hydrogen storage medium of a hydrogen fuel cell, characterized in that: The device comprises: A judgment unit, used to obtain the hydrogen supply rate of the current hydrogen storage medium, and compare the hydrogen supply rate of the current hydrogen storage medium with a specified threshold to determine whether to perform a switching operation; A screening unit, for obtaining comprehensive fitness of a plurality of candidate hydrogen storage media when it is determined that a switching operation is to be performed, screening the plurality of candidate hydrogen storage media according to the comprehensive fitness of each candidate hydrogen storage medium, and determining a target hydrogen storage medium based on the screening result, wherein the candidate hydrogen storage media include high-pressure gaseous hydrogen storage, liquid hydrogen storage and metal hydride hydrogen storage; A switching unit, used to switch the hydrogen storage medium according to applicable parameters of the target hydrogen storage medium; Wherein, in the case of determining to perform a switching operation, obtaining the comprehensive adaptability of multiple candidate hydrogen storage media includes: Acquire environmental parameters of the hydrogen fuel cell, and determine the compatibility of the environmental parameters with various applicable parameters of any candidate hydrogen storage medium, wherein the environmental parameters include operating temperature, operating frequency, operating pressure and operating humidity, and the applicable parameters include hydrogen storage density, release rate, applicable pressure, applicable temperature and applicable flow rate; Determining the comprehensive adaptability of the hydrogen storage medium and the environmental parameters based on the adaptability of each of the applicable parameters and the preset weight values ​​of the applicable parameters; Among them, the KNN algorithm is used to calculate the adaptability of each applicable parameter of the candidate hydrogen storage medium and the current corresponding environmental parameters based on the Euclidean distance.

10. A computer device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method for switching the hydrogen storage medium of a hydrogen fuel cell according to any one of claims 1 to 8 by executing the computer instructions.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a computer to execute a method for switching a hydrogen storage medium for a hydrogen fuel cell according to any one of claims 1 to 8.

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