Fault diagnosis method for hydrogen energy system

Abstract

The invention discloses a hydrogen energy system fault diagnosis method, and belongs to the field of hydrogen energy management. Comprising the following steps: configuring hydrogen production and charging equipment, hydrogen storage equipment and hydrogen utilization equipment; the hydrogen production amount of the hydrogen production and charging equipment in the hydrogen charging process of the hydrogen storage equipment in a standard use period is obtained; acquiring the hydrogen consumption of the hydrogen storage equipment used by the hydrogen using equipment in the same standard service cycle; whether the ratio of the hydrogen production amount to the hydrogen consumption amount is larger than a threshold value or not is judged; and if yes, at least one of the hydrogen production and charging equipment, the hydrogen storage equipment or the hydrogen utilization equipment is marked to have a fault and / or have a fault occurrence trend. According to the invention, the links of hydrogen production and charging, hydrogen storage and hydrogen utilization are digitally connected, data values related to hydrogen in the links of hydrogen production and charging, hydrogen storage and hydrogen utilization in a standard service cycle are obtained, whether the hydrogen energy system fails or not is judged, and industrial cost reduction and efficient development of the hydrogen energy industry are facilitated.

Description

Technical Field

[0001] The invention belongs to the field of hydrogen energy management, and in particular to a hydrogen energy system fault diagnosis method. Background Art

[0002] As a form of energy, hydrogen energy is gradually being applied to various fields of production and life. In recent years, it has been greatly developed in the fields of transportation, such as hydrogen-powered cars and hydrogen-powered two-wheeled vehicles. Hydrogen fuel cells are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy. They have the characteristics of no pollution, low noise, and high efficiency.

[0003] The acquisition, storage, use and management of hydrogen have always been problems faced in this field. For example, the detection of equipment failures in hydrogen production and filling equipment, hydrogen storage equipment, and hydrogen use equipment. Due to the high cost of installing hydrogen concentration detection devices and sensors such as flow sensors, they are generally only installed in the core areas of hydrogen production and filling equipment, hydrogen storage equipment, and hydrogen use equipment, and safety detection is performed on some parameters in the core areas, rather than comprehensive fault detection. At the same time, due to the limited data parameters detected by the sensor, users can only be informed when the fault is serious to a certain level, or even affects the normal operation of the entire hydrogen energy system. There is a problem of difficulty in identifying slightly smaller gas faults in the hydrogen energy system. Summary of the invention

[0004] In order to overcome the above technical defects, the present invention provides a hydrogen energy system fault diagnosis method to solve the problems involved in the background technology.

[0005] The present invention provides a hydrogen energy system fault diagnosis method, comprising:

[0006] The hydrogen energy system comprises a hydrogen production and filling device, a hydrogen storage device and a hydrogen using device that can be used in combination; wherein the hydrogen storage device is in a state where all available hydrogen is exhausted, hydrogen is produced by the hydrogen production and filling device and the hydrogen storage device is filled with hydrogen to the maximum hydrogen filling capacity of the hydrogen storage device, and then the hydrogen storage device is used by the hydrogen using device until all available hydrogen in the hydrogen storage device is exhausted, which is a standard use cycle;

[0007] The diagnostic method comprises:

[0008] Configure the first hydrogen production and filling equipment, the first hydrogen storage equipment, and the first hydrogen use equipment;

[0009] Obtaining a first hydrogen production amount during a process in which the first hydrogen production and filling device fills the first hydrogen storage device with hydrogen within a standard use cycle;

[0010] Obtaining a first hydrogen consumption of the first hydrogen storage device using hydrogen by the first hydrogen-using device within the same standard use cycle;

[0011] Determine whether the ratio of the first hydrogen production amount to the first hydrogen consumption amount is greater than a first threshold; if so, mark at least one of the first hydrogen production and filling equipment, the first hydrogen storage equipment or the first hydrogen use equipment as having a fault and / or a tendency to fail.

[0012] Preferably or optionally, the diagnostic method further comprises:

[0013] Configure a second hydrogen storage device;

[0014] Obtaining a second amount of hydrogen produced during the process of the first hydrogen production and filling device charging the second hydrogen storage device with hydrogen within a standard use cycle;

[0015] Obtaining a second hydrogen consumption of the first hydrogen-using device using the second hydrogen storage device within the same standard use cycle;

[0016] Determine whether the ratio of the second hydrogen production amount to the second hydrogen consumption amount is greater than a first threshold value; if so, the first hydrogen production and filling equipment or the first hydrogen use equipment has a fault or has a tendency to fail; if not, mark the first hydrogen storage equipment as having a fault or having a tendency to fail.

[0017] Preferably or optionally, the diagnostic method further comprises:

[0018] Configure the second hydrogen-using equipment;

[0019] Obtaining a third amount of hydrogen produced during the process of the first hydrogen production and filling device charging the second hydrogen storage device with hydrogen within a standard use cycle;

[0020] Obtaining a third hydrogen consumption of the second hydrogen storage device by the second hydrogen-using device within the same standard use cycle;

[0021] Determine whether the ratio of the third hydrogen production amount to the third hydrogen consumption amount is greater than a first threshold; if so, the first hydrogen production and filling equipment has a fault or has a tendency to fail; if not, mark the first hydrogen consumption equipment as having a fault or having a tendency to fail.

[0022] Preferably or optionally, the diagnostic method further comprises:

[0023] Configure the second hydrogen production and filling equipment;

[0024] Obtaining a fourth hydrogen production amount during a process in which the second hydrogen production and filling device fills the second hydrogen storage device with hydrogen within a standard use cycle;

[0025] Obtaining a fourth hydrogen consumption of the first hydrogen-using device using the second hydrogen storage device within the same standard use cycle;

[0026] Determine whether the ratio of the fourth hydrogen production amount to the fourth hydrogen consumption amount is greater than a first threshold; if so, mark the first hydrogen-using equipment as having a fault or a tendency to fail; if not, mark the first hydrogen-producing and filling equipment as having a fault or a tendency to fail.

[0027] Preferably or optionally, the value of the first threshold is positively correlated with the number of interruptions between the hydrogen-using device and the hydrogen storage device.

[0028] Preferably or optionally, the diagnostic method further comprises:

[0029] Obtaining N+1 hydrogen production during the process of the first hydrogen production and charging device charging the first hydrogen storage device with hydrogen within N+1 standard use cycles; N is a natural number greater than 3;

[0030] Calculate the hydrogen charging amount based on the hydrogen production amount to obtain N+1 hydrogen charging amounts during the process of the first hydrogen production and charging equipment charging the first hydrogen storage equipment with hydrogen within N+1 standard use cycles;

[0031] A change curve of the hydrogen filling amount is obtained based on the hydrogen filling amount within N standard use cycles;

[0032] It is determined whether the distance between the hydrogen filling amount in the N+1th standard use cycle and the change curve of the hydrogen filling amount is greater than a third threshold; if so, it is marked that the first hydrogen storage device has a fault or has a tendency to fail.

[0033] Preferably or optionally, the hydrogen storage device has a readable and writable memory, and the readable and writable memory includes the following data: the digital identity of the hydrogen storage device and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment of the hydrogen storage device in a standard cycle;

[0034] The diagnostic method further comprises:

[0035] The hydrogen production and filling equipment and / or hydrogen using equipment reads the read-write memory, and records the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment within a standard cycle into the read-write memory.

[0036] Preferably or optionally, the hydrogen production and filling equipment and / or hydrogen use equipment has a built-in intelligent terminal, and the intelligent terminal is communicatively connected with the hydrogen production and filling equipment and / or hydrogen use equipment;

[0037] The diagnostic method further comprises:

[0038] The hydrogen production and filling equipment and / or hydrogen use equipment identifies the read-write memory and obtains data in the read-write memory;

[0039] The hydrogen production and filling equipment and / or hydrogen using equipment uploads the digital identity of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within a standard cycle of the hydrogen storage device to the smart terminal, so that the smart terminal device records the identity number of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within multiple consecutive standard cycles.

[0040] Preferably or optionally, the hydrogen production and filling equipment and / or hydrogen use equipment is communicatively connected to a cloud management device;

[0041] The diagnostic method further comprises:

[0042] The hydrogen production and filling equipment and / or hydrogen use equipment identifies the read-write memory and obtains data in the read-write memory;

[0043] The hydrogen production and filling equipment and / or hydrogen using equipment are communicatively connected with the cloud management equipment, and the digital identity of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within a standard cycle of the hydrogen storage device are uploaded to the cloud management equipment, so that the cloud management equipment records the identity number of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within multiple consecutive standard cycles.

[0044] Preferably or optionally, the hydrogen production and charging equipment and / or hydrogen use equipment is communicatively connected to a cloud management device; an electronic tag is attached to the outside of the hydrogen storage device, and the electronic tag records the digital identity of the hydrogen storage device;

[0045] The diagnostic method also includes:

[0046] The hydrogen production and charging equipment and / or hydrogen consumption equipment identifies the electronic tag and uploads the digital identity of the hydrogen storage equipment to the cloud management device;

[0047] The hydrogen production and filling equipment and / or hydrogen consumption equipment are connected to the cloud management equipment for communication, and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen consumption equipment of the hydrogen storage device within a standard cycle are uploaded to the cloud management equipment;

[0048] The cloud management device transmits the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment of the hydrogen storage device associated with the digital identity within a standard period to the cloud management device, so that the cloud management device records the identity number of the hydrogen storage device and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment within multiple consecutive standard periods.

[0049] The present invention relates to a hydrogen energy system fault diagnosis method, which has the following beneficial effects compared with the prior art: the present invention connects the various links of hydrogen production, hydrogen storage, and hydrogen use through digitalization, obtains hydrogen-related data values ​​in the various links of hydrogen production, hydrogen storage, and hydrogen use within a standard use cycle, and determines whether a hydrogen energy system fault occurs, which will be beneficial to the reduction of industrial costs and efficient development of the hydrogen energy industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 A schematic diagram of the structure of a hydrogen energy system in accordance with an embodiment of the present invention;

[0051] Figure 2 A schematic diagram of the structure of a hydrogen energy system in accordance with another embodiment of the present invention;

[0052] Figure 3 It is a flow chart of the hydrogen energy system fault diagnosis method in accordance with the present invention. DETAILED DESCRIPTION

[0053] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0054] In order to better understand the technical solution of the present application, a brief description is now given of the structure of a hydrogen energy system and the concept of a standard use cycle. The hydrogen energy system includes hydrogen production and filling equipment, hydrogen storage equipment, and hydrogen use equipment that can be used in combination.

[0055] Example of hydrogen production and filling equipment

[0056] The hydrogen production and filling equipment includes at least two functions, hydrogen production and hydrogen filling, to realize hydrogen filling of hydrogen storage equipment. The hydrogen production and filling equipment can be a hydrogen production and filling integrated machine, a combination of a hydrogen production machine and a hydrogen filling machine; for example, a micro solar hydrogen production and filling integrated machine can adopt solar water electrolysis hydrogen production / filling technology to solve the problem of consumers using hydrogen energy vehicles and other hydrogen energy terminal products to fill hydrogen with hydrogen. In this embodiment, the hydrogen production and filling equipment is composed of a water storage tank, a hydrogen filling cabin, an electrolyzer, a hydrogen-water separator, a drying assembly, and a hydrogen filling pipeline, and is equipped with a color touch display. The purity of the prepared hydrogen is greater than 99.99%. Usually, 200 ml of water takes 5 hours to produce 200L of hydrogen, which can drive external hydrogen-using equipment, such as a hydrogen energy vehicle (here refers to a hydrogen energy bicycle) to travel 40 kilometers. All equipment that has water electrolysis technology to produce hydrogen can be regarded as hydrogen production and filling equipment. After the hydrogen production and filling equipment prepares hydrogen, it releases the prepared hydrogen to the required equipment. During the release process, the hydrogen production and filling equipment will record the preparation process, record the amount of hydrogen produced and filled, and can display the above information on the display screen.

[0057] Examples of hydrogen storage equipment

[0058] The hydrogen production and filling equipment generally has the ability to produce hydrogen from water using electrolysis technology, but the produced hydrogen needs to be supplied to the equipment that needs hydrogen energy immediately or in a short time. Therefore, at least one hydrogen storage device is required to be connected to the hydrogen production and filling equipment, for example, the two devices are connected by a gas pipe, and hydrogen is input from the hydrogen production and filling equipment to the hydrogen storage device. Each hydrogen storage device has a read-write memory, and the read-write memory records the digital identity of the hydrogen storage device, the current hydrogen amount and the full bottle of hydrogen. The hydrogen production and filling equipment can obtain the digital identity of the hydrogen storage device to know which hydrogen storage device is currently connected to it, and then know the current hydrogen amount and the full bottle of hydrogen currently in the hydrogen storage device. During the input process, the hydrogen production and filling equipment will also record the input amount filled into the hydrogen storage device (recorded as the production / charging amount) on the read-write memory. Optionally, the production / charging amount can also be displayed on the hydrogen production and filling equipment along with the production / charging amount, so that the user can view the working status of the hydrogen production and filling equipment and the hydrogen storage equipment in real time.

[0059] Examples of hydrogen equipment

[0060] Hydrogen-using equipment, such as hydrogen fuel cells, hydrogen power generation systems, hydrogen vehicles, etc., are external equipment that consumes hydrogen energy. They are connected to hydrogen storage equipment and receive stored hydrogen from the hydrogen storage equipment (it can be understood that when the hydrogen-using equipment is a hydrogen vehicle, the hydrogen storage equipment is a hydrogen tank. When the hydrogen tank receives the stored hydrogen and supplies it to the hydrogen vehicle, the hydrogen tank is no longer connected to the hydrogen production and filling equipment). In other embodiments, if the hydrogen-using equipment is a fixed-position device, the connection between the hydrogen production and filling equipment and the hydrogen storage equipment may be established or not, depending on the user's usage requirements. For hydrogen-using equipment configured to receive hydrogen from the hydrogen storage equipment, and convert hydrogen energy into other forms of energy output. The hydrogen-using equipment further determines the hydrogen consumption of the hydrogen-using equipment based on the energy conversion rate of the reaction unit and / or the amount of hydrogen entering the reaction unit, or it can be optionally displayed to the user, or the hydrogen-using equipment reads the read-write memory and records the hydrogen consumption in the read-write memory.

[0061] Standard life cycle

[0062] The standard usage cycle is a closed and complete cycle of hydrogen production and use. The hydrogen storage device is in a state of exhausting all available hydrogen. Hydrogen is produced by the hydrogen production and filling device and the hydrogen storage device is filled with hydrogen to the maximum hydrogen filling capacity of the hydrogen storage device. The hydrogen filling process ends, and no hydrogen consumption activities are performed in the intermediate process of hydrogen filling. The hydrogen storage device is then used to power hydrogen-using devices such as hydrogen-powered bicycles to consume all available hydrogen in the hydrogen storage device. The measurement is terminated when the hydrogen in the hydrogen storage device is exhausted, and no hydrogen filling activities are provided in the intermediate process of hydrogen consumption.

[0063] Generally speaking, for the acquisition, storage, and use management of hydrogen, users are more concerned about the time it takes to fill the hydrogen storage device, the amount of hydrogen, the time the hydrogen-using equipment can maintain use, the remaining amount of hydrogen, and other information. After comparing and analyzing the cumulative amount of hydrogen obtained by the hydrogen-making and filling equipment and the cumulative consumption of the hydrogen-using equipment, it can also reflect to a certain extent whether the hydrogen energy system has failed. However, due to the superposition of errors, human operation, and other reasons, the data is distorted, which has a greater impact on the accuracy of the judgment. Therefore, for home users, the standard use cycle of the hydrogen energy system can be achieved by guiding users to cooperate or hardware support to improve the fault diagnosis accuracy of the hydrogen energy system. For hydrogen storage equipment in which some hydrogen is not completely consumed and connected to the hydrogen-making and filling equipment, when the hydrogen filling action is performed, the hydrogen in the hydrogen storage equipment can be reused until all the available hydrogen in the hydrogen storage equipment is exhausted, and the hydrogen consumption is recorded. For example, the pipeline of the hydrogen-making and filling machine is cleaned to empty the air in the hydrogen filling pipeline; or the hydrogen in the hydrogen storage equipment is discharged through a dedicated pipeline in the hydrogen-making and filling equipment for the production of hydrogen-rich water. It should be understood that, in this case, some of the hydrogen-consuming units in the hydrogen production and filling equipment are also considered as hydrogen-using equipment.

[0064] See attached Figure 3, Embodiment 4, this embodiment proposes a hydrogen energy system fault diagnosis method, comprising the following steps:

[0065] S100, configuring a first hydrogen production and charging device, a first hydrogen storage device, and a first hydrogen use device;

[0066] Specifically, by establishing a hydrogen energy system, users can obtain the hydrogen data values ​​involved in each link in real time and conduct refined data management. The hydrogen energy system can be an enterprise-type hydrogen energy system or a household-type hydrogen energy system. Specifically, the enterprise-type hydrogen energy system can be a hydrogen energy system for urban transportation, such as the hydrogen energy system for urban transportation with multiple hydrogen filling stations for hydrogen production and filling equipment, multiple shared hydrogen bicycles distributed around the city, and hydrogen storage equipment circulating at hydrogen filling stations and shared hydrogen bicycles; the household-type hydrogen energy system includes a hydrogen production and filling equipment, no more than three hydrogen storage equipment, and a household hydrogen vehicle.

[0067] The hydrogen storage device includes a read-write memory, such as a chip used as an electronic ID card. The read-write memory itself has the ability to be read and written. The hydrogen production and charging equipment and the hydrogen use equipment can read and write the read-write memory in the hydrogen storage device without restriction. Therefore, the read-write memory can calculate the hydrogen charging amount or hydrogen consumption amount according to the reading and writing of the hydrogen production and charging equipment and the hydrogen use equipment, and record it in its own storage space. At the same time, in order to facilitate the hydrogen production and charging equipment and the cloud management equipment to manage different hydrogen production and charging equipment and hydrogen use equipment, the digital identity of the hydrogen storage device can also be recorded in the read-write memory to distinguish different hydrogen storage devices.

[0068] S200, obtaining a first hydrogen production amount in a process of charging a first hydrogen storage device with hydrogen by the first hydrogen production and charging device within a standard use cycle; obtaining a first hydrogen consumption amount of the first hydrogen storage device by the first hydrogen consumption device within the same standard use cycle;

[0069] Specifically, on the side of the hydrogen production and charging equipment, after the user has connected the hydrogen production and charging equipment and the hydrogen storage equipment, the user will read the information in the read-write memory of the hydrogen storage equipment in real time to obtain the digital identity recorded in the read-write memory, and measure the power consumption of the hydrogen production and charging equipment associated with the hydrogen storage equipment, and associate the power consumption with the hydrogen production, so as to calculate the hydrogen production based on the power consumption; a flow statistics element is built-in or externally connected on the hydrogen charging path of the hydrogen production equipment and the hydrogen storage equipment to count the hydrogen production. By reading the information in the read-write memory of the hydrogen storage equipment in real time, the hydrogen production of the hydrogen production and charging equipment within a standard period is recorded in the read-write memory.

[0070] The hydrogen-using device reads the digital identity and current hydrogen quantity recorded in the read-write memory in real time, and calculates the hydrogen consumption data associated with the digital identity based on the current hydrogen quantity. The hydrogen-using device further determines the hydrogen consumption of the hydrogen-using device based on the energy conversion rate of the reaction unit and / or the amount of hydrogen entering the reaction unit, or it can be optionally displayed to the user, or the hydrogen-using device reads the read-write memory and records the hydrogen consumption in the read-write memory. In other words, the hydrogen consumption of the entire hydrogen-using device is inferred based on the operating time, mileage and other data output by the hydrogen-using device; thus, the hydrogen storage device and the hydrogen-using device always have the ability to accurately obtain the hydrogen consumption data of the hydrogen-using device and other data until all the available hydrogen in the hydrogen storage device is consumed. The information in the read-write memory of the hydrogen storage device is read, and the hydrogen consumption of the hydrogen-using device within a standard cycle is recorded in the read-write memory.

[0071] S300, determining whether the ratio between the first hydrogen production amount and the first hydrogen consumption amount is greater than a first threshold; if so, marking that at least one of the first hydrogen production and filling equipment, the first hydrogen storage equipment, or the first hydrogen use equipment is faulty and / or has a tendency to fail;

[0072] In one embodiment, see the attached Figure 1 The hydrogen production and charging equipment and / or hydrogen using equipment is equipped with an intelligent terminal, and the intelligent terminal is in communication with the hydrogen production and charging equipment and / or hydrogen using equipment; the hydrogen production and charging equipment and / or hydrogen using equipment upload the digital identity of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and charging equipment and the hydrogen consumption of the hydrogen using equipment within a standard cycle of the hydrogen storage device to the intelligent terminal. The most important and most difficult problem to directly find in the hydrogen energy system is pipeline hydrogen leakage. The intelligent terminal compares the hydrogen production amount with the hydrogen consumption. If the ratio or difference between the hydrogen production amount and the hydrogen consumption is too large, it means that there is hydrogen loss between the hydrogen production and charging equipment, the hydrogen storage equipment or the hydrogen using equipment, and the loss is relatively large, and there is a trend of failure or a failure has occurred; if not, the diagnosis is terminated until the data within the next standard use cycle is obtained, and then the diagnosis is repeated.

[0073] In another embodiment, see the attached Figure 2, the hydrogen production and charging equipment and / or hydrogen using equipment are communicatively connected to a cloud management device; the hydrogen production and charging equipment and / or hydrogen using equipment are communicatively connected to the cloud management device, and the digital identity of the hydrogen storage device and the hydrogen production amount of the hydrogen production and charging equipment and the hydrogen consumption amount of the hydrogen using equipment within a standard cycle of the hydrogen storage device are uploaded to the cloud management device. The hydrogen production amount and the hydrogen consumption amount are compared and judged by the intelligent terminal. If the ratio or difference between the hydrogen production amount and the hydrogen consumption amount is too large, it means that there is a hydrogen loss between the hydrogen production and charging equipment, the hydrogen storage equipment or the hydrogen using equipment, and the loss amount is relatively large, and there is a trend of failure or a failure has occurred; if not, the diagnosis is terminated until the data within the next standard use cycle is obtained, and then the diagnosis is repeated.

[0074] It should be noted that, during normal use, the hydrogen in the hydrogen storage device is not consumed in one go, and usually requires multiple uses to be consumed. For some types of hydrogen-using equipment, there will be a certain amount of hydrogen loss during the startup phase, and the corresponding value of the first threshold will also change accordingly. Specifically, the value of the first threshold is positively correlated with the number of interruptions between the hydrogen-using equipment and the hydrogen storage equipment.

[0075] In addition, in this embodiment, the ratio between the hydrogen production amount and the hydrogen consumption amount is used, but for those skilled in the art, it can also be the difference between the hydrogen production amount and the hydrogen consumption amount, and the range of the corresponding first threshold value will also change.

[0076] In order to further diagnose the failure of the hydrogen energy system in the three links of hydrogen production, hydrogen storage and hydrogen use, this embodiment adopts a diagnostic method similar to the above, by changing the variables to accurately obtain the location of the fault.

[0077] S400, configuring a second hydrogen storage device;

[0078] S500, obtaining a second amount of hydrogen produced during the process of the first hydrogen production and charging device charging the second hydrogen storage device with hydrogen within a standard use cycle; obtaining a second amount of hydrogen consumed by the first hydrogen consumption device using the second hydrogen storage device within the same standard use cycle;

[0079] S600, determining whether the ratio between the second hydrogen production amount and the second hydrogen consumption amount is greater than a first threshold; if so, the first hydrogen production and charging device or the first hydrogen use device is faulty or has a tendency to fail; if not, marking the first hydrogen storage device as faulty or having a tendency to fail;

[0080] Among them, the second hydrogen storage device is a hydrogen storage device of the same type, specification and model as the first hydrogen storage device, and the first hydrogen storage device and the second hydrogen storage device are used to distinguish the same type of information from each other. The second hydrogen production amount during the process of the first hydrogen production and filling device charging the second hydrogen storage device within a standard use cycle is obtained; without departing from the scope of the present disclosure, the first hydrogen storage device may also be referred to as the second hydrogen storage device, and similarly, the second hydrogen storage device may also be referred to as the first hydrogen storage device. The same applies to the terms "second hydrogen production and filling device", "second hydrogen use equipment", "second hydrogen production amount" and so on in this article.

[0081] In order to further diagnose the faults in the three links of hydrogen production and filling and hydrogen use of the hydrogen energy system, this embodiment adopts a diagnostic method similar to the above, and accurately obtains the location of the fault by changing the variables.

[0082] S700, configuring a second hydrogen production and filling device;

[0083] S800, obtaining a fourth amount of hydrogen produced during the process of the second hydrogen production and charging equipment charging the second hydrogen storage equipment within a standard use cycle; obtaining a fourth amount of hydrogen consumed by the first hydrogen use equipment using the second hydrogen storage equipment within the same standard use cycle;

[0084] S900, determine whether the ratio of the fourth hydrogen production amount to the fourth hydrogen consumption amount is greater than a first threshold; if so, mark the first hydrogen-using equipment as having a fault or a tendency to fail; if not, mark the first hydrogen-producing and filling equipment as having a fault or a tendency to fail.

[0085] or

[0086] S700, configuring a second hydrogen production and filling device;

[0087] S800, obtaining a fourth amount of hydrogen produced during the process of the second hydrogen production and charging equipment charging the second hydrogen storage equipment within a standard use cycle; obtaining a fourth amount of hydrogen consumed by the first hydrogen use equipment using the second hydrogen storage equipment within the same standard use cycle;

[0088] S900, determine whether the ratio of the fourth hydrogen production amount to the fourth hydrogen consumption amount is greater than a first threshold; if so, mark the first hydrogen-using equipment as having a fault or a tendency to fail; if not, mark the first hydrogen-producing and filling equipment as having a fault or a tendency to fail.

[0089] Based on the above S100 to S900, the intelligent system or cloud management equipment determines whether the hydrogen production and filling equipment, hydrogen storage equipment, and hydrogen use equipment have failed or have a trend of failure, and immediately notifies relevant personnel to perform maintenance or care, thereby increasing the service life and use effect of the equipment and improving customer experience.

[0090] In a further embodiment, since hydrogen storage equipment generally uses solid-state hydrogen storage materials for storage, and solid-state hydrogen storage materials will cause the hydrogen storage performance to decrease during the cyclic use process, this embodiment also designs a diagnostic method for hydrogen storage equipment to improve the diagnostic accuracy of hydrogen storage equipment. It should be noted that since the diagnostic method needs to obtain multiple sets of hydrogen consumption-related data, the smart terminal device records the identity number of the hydrogen storage equipment and the hydrogen production and hydrogen consumption of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen-using equipment within multiple consecutive standard periods. Or the cloud management device records the identity number of the hydrogen storage equipment and the hydrogen production and hydrogen consumption of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen-using equipment within multiple consecutive standard periods.

[0091] Specifically, the diagnostic method includes: obtaining N+1 hydrogen production amounts during the process of hydrogen charging the first hydrogen storage device by the first hydrogen production and charging equipment within N+1 standard usage cycles; N is a natural number greater than 3; calculating the hydrogen charging amount based on the hydrogen production amount to obtain N+1 hydrogen charging amounts during the process of hydrogen charging the first hydrogen storage device by the first hydrogen production and charging equipment within N+1 standard usage cycles; obtaining a hydrogen charging amount change curve based on the hydrogen charging amounts within N standard usage cycles; judging whether the distance between the hydrogen charging amount within the N+1th standard usage cycle and the hydrogen charging amount change curve is greater than a third threshold; if so, marking the first hydrogen storage device as having a fault or having a tendency to fail.

[0092] Since the hydrogen production amount can be obtained based on the power consumption or flow meter of the electrolyzer in the hydrogen production and charging equipment, the hydrogen charging amount can be estimated through data statistics based on the ambient temperature, the internal pressure of the hydrogen charging pipeline, the internal gas pressure of the hydrogen storage equipment, and the hydrogen charging working time, and the N+1 hydrogen charging amount under N+1 standard use cycles can be obtained; through multiple groups of data (1, Q1), (2, Q2) to (N, Q N ) is fitted to obtain the variation curve of hydrogen charging amount; where Q N is the hydrogen filling amount under the Nth standard use cycle; finally, (N+1, Q N+1 ) is located on the hydrogen charging amount change curve, and then judge whether the hydrogen charging amount change of the hydrogen storage device is normal. Of course, for those skilled in the art, when Q N If it is too low, relevant personnel will also need to perform maintenance.

[0093] In actual use, further considering the non-standard use period (the non-standard use period is that the hydrogen storage device is not fully filled or not fully exhausted), it is necessary to perform the data (1, Q1), (2, Q2) to (N, Q N ) is corrected, that is, through (1, Q1), (2, Q2) to (N+f·M, Q P ) to get the fitting curve of hydrogen charging amount, where Q PThe amount of hydrogen charged in the Pth usage cycle, where P usage cycles include N standard usage cycles and M non-standard usage cycles, and f is the correction factor, which is related to the remaining hydrogen content in the hydrogen storage container and has a value range of 0.6≤f≤1.

[0094] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A hydrogen energy system fault diagnosis method, characterized in that: The hydrogen energy system comprises a hydrogen production and charging device, a hydrogen storage device and a hydrogen using device; wherein the hydrogen storage device is in a state where all available hydrogen is exhausted, and hydrogen is produced by the hydrogen production and charging device and the hydrogen storage device is charged with hydrogen to the maximum hydrogen filling capacity of the hydrogen storage device, and then all available hydrogen in the hydrogen storage device is exhausted by the hydrogen using device, which is a standard use cycle; The diagnostic method comprises: Configure the first hydrogen production and filling equipment, the first hydrogen storage equipment, and the first hydrogen use equipment; Obtaining a first hydrogen production amount during a process in which the first hydrogen production and filling device fills the first hydrogen storage device with hydrogen within a standard use cycle; Obtaining a first hydrogen consumption of the first hydrogen storage device by the first hydrogen-using device within the same standard use cycle; Determine whether the ratio of the first hydrogen production amount to the first hydrogen consumption amount is greater than a first threshold; if so, mark at least one of the first hydrogen production and filling equipment, the first hydrogen storage equipment or the first hydrogen use equipment as having a fault and / or a tendency to fail.

2. The hydrogen energy system fault diagnosis method according to claim 1, characterized in that: The diagnostic method further comprises: Configure a second hydrogen storage device; Obtaining a second amount of hydrogen produced during the process of the first hydrogen production and filling device charging the second hydrogen storage device with hydrogen within a standard use cycle; Obtaining a second hydrogen consumption of the first hydrogen-using device using the second hydrogen storage device within the same standard use cycle; Determine whether the ratio of the second hydrogen production amount to the second hydrogen consumption amount is greater than a first threshold value; if so, the first hydrogen production and filling equipment or the first hydrogen use equipment has a fault or has a tendency to fail; if not, mark the first hydrogen storage equipment as having a fault or having a tendency to fail.

3. The hydrogen energy system fault diagnosis method according to claim 2, characterized in that: The diagnostic method further comprises: Configure the second hydrogen-using equipment; Obtaining a third amount of hydrogen produced during the process of the first hydrogen production and filling device charging the second hydrogen storage device with hydrogen within a standard use cycle; Obtaining a third hydrogen consumption of the second hydrogen storage device by the second hydrogen-using device within the same standard use cycle; Determine whether the ratio of the third hydrogen production amount to the third hydrogen consumption amount is greater than a first threshold; if so, the first hydrogen production and filling equipment has a fault or has a tendency to fail; if not, mark the first hydrogen consumption equipment as having a fault or having a tendency to fail.

4. The hydrogen energy system fault diagnosis method according to claim 2, characterized in that: The diagnostic method further comprises: Configure the second hydrogen production and filling equipment; Obtaining a fourth hydrogen production amount during a process in which the second hydrogen production and filling device fills the second hydrogen storage device with hydrogen within a standard use cycle; Obtaining a fourth hydrogen consumption of the first hydrogen-using device using the second hydrogen storage device within the same standard use cycle; Determine whether the ratio of the fourth hydrogen production amount to the fourth hydrogen consumption amount is greater than a first threshold; if so, mark the first hydrogen-using equipment as having a fault or a tendency to fail; if not, mark the first hydrogen-producing and filling equipment as having a fault or a tendency to fail.

5. The hydrogen energy system fault diagnosis method according to any one of claims 1 to 4, characterized in that: The value of the first threshold is positively correlated with the number of interruptions between the hydrogen-using device and the hydrogen-storage device.

6. The hydrogen energy system fault diagnosis method according to claim 1, characterized in that: The diagnostic method further comprises: Obtaining N+1 hydrogen production during the process of the first hydrogen production and charging device charging the first hydrogen storage device with hydrogen within N+1 standard use cycles; N is a natural number greater than 3; Calculate the hydrogen charging amount based on the hydrogen production amount to obtain N+1 hydrogen charging amounts during the process of the first hydrogen production and charging equipment charging the first hydrogen storage equipment with hydrogen within N+1 standard use cycles; A change curve of the hydrogen filling amount is obtained based on the hydrogen filling amount within N standard use cycles; It is determined whether the distance between the hydrogen filling amount in the N+1th standard use cycle and the change curve of the hydrogen filling amount is greater than a third threshold; if so, it is marked that the first hydrogen storage device has a fault or has a tendency to fail.

7. The hydrogen energy system fault diagnosis method according to any one of claims 1 to 4 and 6, characterized in that: The hydrogen storage device has a readable and writable memory, and the readable and writable memory includes the following data: the digital identity of the hydrogen storage device and the hydrogen production amount of the hydrogen production and filling device and the hydrogen consumption amount of the hydrogen using device of the hydrogen storage device in a standard cycle; The diagnostic method further comprises: The hydrogen production and filling equipment and / or hydrogen using equipment reads the read-write memory, and records the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment within a standard cycle into the read-write memory.

8. The hydrogen energy system fault diagnosis method according to claim 7, characterized in that: The hydrogen production and filling equipment and / or hydrogen use equipment has a built-in intelligent terminal, and the intelligent terminal is communicatively connected with the hydrogen production and filling equipment and / or hydrogen use equipment; The diagnostic method further comprises: The hydrogen production and filling equipment and / or hydrogen use equipment identifies the readable and writable memory and obtains data in the readable and writable memory; The hydrogen production and filling equipment and / or hydrogen using equipment uploads the digital identity of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within a standard cycle of the hydrogen storage device to the smart terminal, so that the smart terminal device records the identity number of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within multiple consecutive standard cycles.

9. The hydrogen energy system fault diagnosis method according to claim 7, characterized in that: The hydrogen production and filling equipment and / or hydrogen use equipment is communicatively connected to a cloud management device; The diagnostic method further comprises: The hydrogen production and filling equipment and / or hydrogen use equipment identifies the readable and writable memory and obtains data in the readable and writable memory; The hydrogen production and filling equipment and / or hydrogen using equipment are communicatively connected with the cloud management equipment, and the digital identity of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within a standard cycle of the hydrogen storage device are uploaded to the cloud management equipment, so that the cloud management equipment records the identity number of the hydrogen storage equipment and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption of the hydrogen using equipment within multiple consecutive standard cycles.

10. The hydrogen energy system fault diagnosis method according to any one of claims 1 to 4 and 6, characterized in that: The hydrogen production and charging equipment and / or hydrogen use equipment are communicatively connected to a cloud management device; an electronic tag is attached to the outside of the hydrogen storage device, and the electronic tag records the digital identity of the hydrogen storage device; The diagnostic method also includes: The hydrogen production and charging equipment and / or hydrogen consumption equipment identifies the electronic tag and uploads the digital identity of the hydrogen storage equipment to the cloud management device; The hydrogen production and filling equipment and / or hydrogen consumption equipment are connected to the cloud management equipment for communication, and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen consumption equipment of the hydrogen storage device within a standard cycle are uploaded to the cloud management equipment; The cloud management device transmits the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment of the hydrogen storage device associated with the digital identity within a standard period to the cloud management device, so that the cloud management device records the identity number of the hydrogen storage device and the hydrogen production amount of the hydrogen production and filling equipment and the hydrogen consumption amount of the hydrogen using equipment within multiple consecutive standard periods.

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