Gas cylinder use early warning method, vehicle-mounted hydrogen storage system, vehicle and medium, equipment

Abstract

The application discloses a kind of early warning method for gas cylinder, vehicle-mounted hydrogen storage system, vehicle and medium, equipment, early warning method for gas cylinder includes the following steps: obtaining the pressure before and after each time of gas cylinder filling, for the pressure before and after each time of gas cylinder filling, calculate the corresponding filling pressure difference;Obtain the cumulative number of times of gas cylinder filling, and calculate the cumulative fatigue damage according to the cumulative number of times of gas cylinder filling and the filling pressure difference;When cumulative fatigue damage reaches alarm threshold, send alarm information to alarm prompt.

Description

Technical Field

[0001] This invention relates to the field of gas cylinder technology, specifically to a method for early warning of gas cylinder use, an on-board hydrogen storage system, a vehicle and medium, and equipment. Background Technology

[0002] In related technologies, the gas cylinders in the on-board hydrogen storage system of fuel cell vehicles are high-pressure components with design cycle requirements as life indicators. However, fuel cell vehicles are used based on vehicle service life and mileage as the overall standard. Since the service life of fuel cell vehicles stipulated by car manufacturers is not a mandatory scrapping standard, the vehicles may continue to be used after their service life has expired, resulting in the fuel cell being used beyond its lifespan, which may lead to certain safety hazards for the vehicle and people. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide a warning method for the use of gas cylinders. This warning method can ensure the safety of the facilities where the gas cylinders are located and the people using them.

[0004] The second objective of this invention is to provide an on-board hydrogen storage system.

[0005] The third objective of this invention is to provide a vehicle.

[0006] The fourth objective of this invention is to provide a computer-readable storage medium.

[0007] The fifth objective of this invention is to provide an electronic device.

[0008] To achieve the above objectives, a first aspect of the present invention provides an early warning method for the use of gas cylinders. The method includes: acquiring the pressure of the gas cylinder before and after each refueling, and calculating the corresponding refueling pressure difference for the pressure before and after each refueling; acquiring the cumulative number of refuelings of the gas cylinder, and calculating the cumulative fatigue damage based on the cumulative number of refuelings and the refueling pressure difference; and issuing an alarm message to provide an alarm prompt when the cumulative fatigue damage reaches an alarm threshold.

[0009] According to the early warning method for gas cylinders of this invention, the pressure of the gas cylinder before and after each refueling is first obtained, and the corresponding refueling pressure difference is calculated for each pressure before and after refueling; the cumulative number of refuelings of the gas cylinder is obtained, and the cumulative fatigue damage is calculated based on the cumulative number of refuelings and the refueling pressure difference; when the cumulative fatigue damage reaches the alarm threshold, an alarm message is issued to provide an alarm notification. Therefore, this early warning method for gas cylinders, by calculating the cumulative fatigue damage of the gas cylinder, achieves early warning of the gas cylinder's lifespan, ensuring the safety of the facilities and personnel where the gas cylinder is located.

[0010] In addition, the early warning method for the use of gas cylinders proposed in the above embodiments of the present invention may also have the following additional technical features:

[0011] In one embodiment of the present invention, before obtaining the cumulative number of times the gas cylinder is filled and before obtaining the pressure before and after each filling of the gas cylinder, the method further includes: obtaining the cumulative usage time of the gas cylinder; determining that the cumulative usage time has reached the lifespan threshold of the gas cylinder, and issuing an alarm message to provide an alarm prompt.

[0012] In one embodiment of the present invention, before obtaining the cumulative number of times the gas cylinder is filled, the method further includes: obtaining the current filling pressure difference; determining that the current filling pressure difference is greater than or equal to a pressure difference threshold, wherein the pressure difference threshold is the maximum pressure difference that will not cause damage to the gas cylinder.

[0013] In one embodiment of the present invention, the step of calculating cumulative fatigue damage based on the cumulative number of gas refuelings and the gas refueling pressure difference includes: recording each gas refueling pressure difference in the cumulative number of gas refuelings and counting the number of occurrences of each gas refueling pressure difference; and calculating the cumulative fatigue damage based on each gas refueling pressure difference and the number of occurrences of each gas refueling pressure difference.

[0014] In one embodiment of the present invention, the step of calculating the cumulative fatigue damage based on the gas filling pressure difference and the number of occurrences of the gas filling pressure difference includes: calculating the number of cycles corresponding to the gas filling pressure difference; calculating the ratio of each occurrence to the corresponding number of cycles; and summing all ratios to obtain the cumulative fatigue damage.

[0015] In one embodiment of the present invention, the number of cycles corresponding to the gas injection pressure difference is calculated according to the following formula:

[0016] C = (P) n *N,

[0017] Where C is a constant, P is the gas pressure difference, n is a coefficient, and N is the number of cycles.

[0018] To achieve the above objectives, a second aspect of the present invention provides an on-board hydrogen storage system, the system comprising: a gas cylinder; a pressure sensor for detecting the pressure of the gas in the gas cylinder; and an electronic control unit connected to the pressure sensor for acquiring the cumulative number of hydrogen refuelings of the gas cylinder, acquiring the pressure before and after each hydrogen refueling, calculating a hydrogen refueling pressure difference based on the pressure before and after each hydrogen refueling, calculating cumulative fatigue damage based on the cumulative number of hydrogen refuelings and the hydrogen refueling pressure difference, and issuing an alarm message to provide an alarm prompt when the cumulative fatigue damage reaches an alarm threshold.

[0019] The on-board hydrogen storage system according to an embodiment of the present invention includes a gas cylinder, a pressure sensor, and an electronic control unit. The pressure sensor detects the pressure of the gas in the cylinder. The electronic control unit, connected to the pressure sensor, acquires the cumulative number of hydrogen refills to the cylinder, acquires the pressure before and after each refill, calculates the refill pressure difference based on the pressure before and after each refill, calculates cumulative fatigue damage based on the cumulative number of refills and the refill pressure difference, and issues an alarm message when the cumulative fatigue damage reaches an alarm threshold. Thus, this on-board hydrogen storage system, by calculating the cumulative fatigue damage of the gas cylinder, achieves early warning of the cylinder's lifespan, ensuring the safety of the vehicle and its occupants.

[0020] To achieve the above objectives, a third aspect of the present invention provides a vehicle including the above-described on-board hydrogen storage system.

[0021] The vehicle according to an embodiment of the present invention includes the above-described on-board hydrogen storage system. This on-board hydrogen storage system realizes early warning of the lifespan of the gas cylinder by calculating the cumulative fatigue damage of the gas cylinder, thereby ensuring the safety of the vehicle and people where the gas cylinder is located.

[0022] To achieve the above objectives, a fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the aforementioned early warning method for gas cylinder use or the aforementioned on-board hydrogen storage system.

[0023] According to an embodiment of the present invention, a computer-readable storage medium stores a computer program thereon. When the computer program is executed by a processor, it first obtains the cumulative number of times the gas cylinder has been refueled and the pressure before and after each refueling; it then calculates the refueling pressure difference based on the pressure before and after each refueling; it calculates the cumulative fatigue damage based on the cumulative number of refuelings and the refueling pressure difference; and when the cumulative fatigue damage reaches an alarm threshold, it issues an alarm message to provide an alarm notification. Therefore, the early warning method used for this gas cylinder, by calculating the cumulative fatigue damage of the gas cylinder, achieves early warning of the gas cylinder's lifespan, ensuring the safety of the vehicle and people where the gas cylinder is located.

[0024] To achieve the above objectives, a fifth aspect of the present invention provides an electronic device including a memory, a processor, and a computer program stored in the memory, wherein when the computer program is executed by the processor, it implements the above-described early warning method for gas cylinder usage.

[0025] An electronic device according to an embodiment of the present invention includes a memory, a processor, and a computer program stored in the memory. When the computer program is executed by the processor, it first obtains the cumulative number of times the gas cylinder has been refueled and the pressure before and after each refueling; it calculates the refueling pressure difference based on the pressure before and after each refueling; it calculates the cumulative fatigue damage based on the cumulative number of refuelings and the refueling pressure difference; and when the cumulative fatigue damage reaches an alarm threshold, it issues an alarm message to provide an alarm notification. Thus, the early warning method used for this gas cylinder, through the calculation of the cumulative fatigue damage of the gas cylinder, achieves early warning of the gas cylinder's lifespan, ensuring the safety of the vehicle and people where the gas cylinder is located.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] Figure 1 This is a flowchart of a pre-warning method for the use of gas cylinders according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram illustrating the usage cycle of a gas cylinder, as an example of the present invention.

[0029] Figure 3 This is a graph showing the relationship between fatigue stress and the number of cycles in one example of the present invention;

[0030] Figure 4 This is a schematic diagram of an example of an early warning method for gas cylinders according to the present invention;

[0031] Figure 5 This is a flowchart of an example of an early warning method for the use of gas cylinders according to the present invention;

[0032] Figure 6 This is a structural block diagram of an on-board hydrogen storage system according to an embodiment of the present invention;

[0033] Figure 7 This is a structural block diagram of a vehicle according to an embodiment of the present invention. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0035] The following description, with reference to the accompanying drawings, describes an early warning method for gas cylinders, an on-board hydrogen storage system, a vehicle and medium, and equipment according to embodiments of the present invention.

[0036] Figure 1This is a flowchart of a warning method for the use of gas cylinders according to an embodiment of the present invention.

[0037] like Figure 1 As shown, the early warning method for gas cylinders includes the following steps:

[0038] S101: Obtain the pressure of the gas cylinder before and after each refill, and calculate the corresponding refill pressure difference for each refill.

[0039] S102, obtain the cumulative number of times the gas cylinder is filled, and calculate the cumulative fatigue damage based on the cumulative number of times the gas cylinder is filled and the filling pressure difference.

[0040] S103, when the cumulative fatigue damage reaches the alarm threshold, an alarm message is issued to provide an alarm prompt.

[0041] Specifically, for gas cylinders, a design cycle refers to filling the cylinder from the lower limit of the cycle pressure to the upper limit of the cycle pressure, and then releasing gas from the upper limit of the cycle pressure back to the lower limit of the cycle pressure. See [link to documentation] for details. Figure 2 Such a design cycle represents a maximum fatigue stress on the gas cylinder; the lifespan of the cylinder under this maximum fatigue stress is the design cycle number. However, in practical applications, it's impossible to add gas from the lower to the upper cycle pressure each time, nor is it possible to release gas from the upper to the lower cycle pressure each time. Specifically, in practical applications, gas can be added or released at any pressure between the lower and upper cycle pressures. Different pressures before and after adding gas correspond to different pressure differences, which in turn correspond to different fatigue stresses. Under different fatigue stresses, the cylinder lifespan corresponds to different cycle numbers. See also Figure 3 Specifically, the lifespan of a gas cylinder can be calculated using the following formula:

[0042] C = (P) n *N,

[0043] Where C is a constant, i.e. Figure 3 The slope in the equation is related to the vehicle's B10 lifespan, where P is the refueling pressure difference, n is a coefficient related to the material used in the gas cylinder, and N is the number of cycles. Assuming the gas cylinder is at a certain refueling pressure difference P0, its lifespan is the number of cycles N0; assuming it's at a certain refueling pressure difference P1, its lifespan is the number of cycles N1; assuming it's at a certain refueling pressure difference P2, its lifespan is the number of cycles N2; therefore, C = (P0) n *N0=(P1) n *N1=(P2) n *N2; N1 = (P0 / P1) n *N0; N2 = (P0 / P2) n *N0

[0044] It is evident that the smaller the pressure difference during refueling, the greater the number of cycles. Therefore, it is necessary to obtain the pressure before and after each refueling, and to obtain the cumulative number of refueling cycles for the gas cylinder.

[0045] The aforementioned cumulative number of gas refueling times corresponds to the cumulative number of gas refueling times with the pressure before and after gas refueling. For example, a storage address can be set for each different pressure before and after gas refueling. After a certain pressure before and after gas refueling is detected to occur once, the stored data in the corresponding storage address is incremented by one, which means that the number of occurrences of the pressure before and after gas refueling corresponding to that storage address has increased by one.

[0046] Meanwhile, after obtaining the pressure before and after each refill of the gas cylinder, the pressure difference for each refill can be calculated. Taking the first refill as an example, the pressure before refilling the gas cylinder can be recorded as Pb1, and the pressure after refilling the gas cylinder can be recorded as Pa1. Therefore, the pressure difference for the first refill can be recorded as Pa1-Pb1.

[0047] After obtaining the cumulative number of refueling cycles and the refueling pressure difference, the cumulative number of damage cycles under a certain fatigue stress can be calculated. This means that for each refueling pressure difference, the fatigue damage caused to the gas cylinder by that pressure difference can be obtained. Therefore, the cumulative fatigue damage can be calculated based on the cumulative number of refueling cycles and the refueling pressure difference.

[0048] If the cumulative fatigue damage is less than the alarm threshold, it indicates that the gas cylinder has not yet reached its online lifespan; if the cumulative fatigue damage is greater than or equal to the alarm threshold, it indicates that the gas cylinder's online lifespan is about to be reached, and an alarm message will be issued. It should be noted that the alarm threshold can be determined based on actual conditions; for example, the alarm threshold can be set to 95%.

[0049] This allows for the detection of the lifespan of gas cylinders and the triggering of an alarm when a cylinder is nearing the end of its service life, thereby ensuring the safety of facilities where gas cylinders are installed, such as vehicles and hydrogen refueling stations, as well as the safety of people.

[0050] In some embodiments of the present invention, the pressure is obtained from a barometric pressure sensor. As an example, see [link to example]. Figure 4 It includes three gas cylinders, each with a valve and a temperature sensor to measure the gas temperature inside each cylinder to prevent overfilling. A pressure sensor (such as a high-pressure sensor) is located on the supply line of the manifold or pressure reducing valve, and an ECU (Electronic Control Unit) is used to read the sensor data and control the valve. This structure can collect the pressure of the gas cylinders during hydrogen filling and discharging through the pressure sensor, feed it back to the ECU, and realize life detection and alarm based on the corresponding logic and algorithm in the ECU software.

[0051] For details, see Figure 5 In the specific example shown, if a hydrogen refueling requirement is detected, the Electronic Control Unit (ECU) enters the hydrogen refueling mode, reads and stores the pressure data Pbk before hydrogen refueling and Pak after hydrogen refueling. Pbk, Pak, LP, and HP satisfy the following relationship: LP ≤ Pbk < Pak ≤ HP, k is a positive integer, HP is the upper limit of the cycle pressure, and LP is the lower limit of the cycle pressure. Further, the ECU exits the hydrogen refueling mode and triggers the storage of the corresponding number of hydrogen refueling cycles at address NVR[k] corresponding to the pressures [Pbk, Pak] before and after hydrogen refueling. Then, it checks whether the number of hydrogen refueling cycles is stored at address NVR[k]. If not, the ECU reports an error; if yes, NVR[k] is incremented by 1 until the statistics are complete. Finally, it calculates the cumulative number of damage cycles under a certain stress and obtains the cumulative fatigue damage. This is compared with the life alarm threshold to determine if the alarm condition is met. If yes, the ECU alarms; otherwise, the ECU does not alarm.

[0052] In some embodiments of the present invention, calculating cumulative fatigue damage based on the cumulative number of gas filling cycles and the gas filling pressure difference may include the following steps:

[0053] A1. Record the pressure difference of each gas refueling in the cumulative number of gas refuelings, and count the number of times each gas refueling pressure difference occurs.

[0054] For example, suppose the gas cylinder is refilled five times. The first refill: the pressure before refilling is Pb1, and the pressure after refilling is Pa1. The pressure sensor collects both pressures, Pb1 and Pa1, and stores them once in the corresponding memory NVR1. The second refill: the refill pressure is Pb2, and the pressure after refilling is Pa2. The pressure sensor collects both pressures, Pb2 and Pa2, and stores them once in the corresponding memory NVR2. The third refill: the refill pressure is Pb3, and the pressure after refilling is Pa3. The pressure sensor collects two pressures, Pb3 and Pa3, and stores them in the corresponding memory NVR3 once. During the fourth gas filling, the filling pressure is Pb2, and the post-filling pressure is Pa2. The pressure sensor collects both Pb2 and Pa2, and stores them in the corresponding memory NVR2 twice. During the fifth gas filling, the filling pressure is Pb3, and the post-filling pressure is Pa3. The pressure sensor collects both Pb3 and Pa3, and stores them in the corresponding memory NVR2 twice. At this point, the filling pressure difference Pa1-Pb1 occurs once, the filling pressure difference Pa2-Pb2 occurs twice, and the filling pressure difference Pa3-Pb3 occurs twice.

[0055] A2. Calculate the cumulative fatigue damage based on the pressure differences and the number of times each pressure difference occurs.

[0056] Specifically, after obtaining the number of occurrences of each gas filling pressure difference, the number of cycles corresponding to each gas filling pressure difference is determined according to each gas filling pressure difference; the ratio of the number of occurrences of each gas filling pressure difference to the number of cycles is calculated, and all ratios are summed to obtain the cumulative fatigue damage.

[0057] The number of iterations is calculated using the following formula:

[0058] C = (P) n *N.

[0059] Let's continue with the example above. Since C is known, after obtaining the gas filling pressure difference Pa1-Pb1, we can substitute Pa1-Pb1 into the above formula to get C = (Pa1-Pb1). n *N (a1-b1) By transforming the expression, we can obtain the following expression:

[0060] N (a1-b1) =C / (Pa1-Pb1) n .

[0061] After obtaining N (a1-b1) Then, the fatigue damage to the gas cylinder caused by the gas pressure difference Pa1-Pb1 can be obtained as 1 / N. (a1-b1) *100%.

[0062] Similarly, the fatigue damage to the gas cylinder caused by the second refill is 1 / N. (a2-b3) *100%, the fatigue damage to the gas cylinder caused by the third refill is 1 / N. (a3-b3) *100%, the fatigue damage to the gas cylinder caused by the fourth refill is 1 / N. (a2-b3) *100%, the fatigue damage to the gas cylinder caused by the fifth refill is 1 / N. (a3-b3) *100%. That is, the fatigue damage to the gas cylinder caused by the pressure difference Pa1-Pb1 is 1 / N. (a1-b1) *100%, the fatigue damage to the gas cylinder caused by the pressure difference Pa2-Pb2 is 2 / N. (a2-b2) *100%, the fatigue damage to the gas cylinder caused by the pressure difference Pa3-Pb3 is 2 / N. (a3-b3) *100%, therefore, the cumulative fatigue damage to the gas cylinder caused by the above five gas fillings is 1 / N. (a1-b1) *100%+2 / N (a2-b2) *100%+2 / N (a3-b3) *100%.

[0063] Therefore, the cumulative fatigue damage of the gas cylinder can be obtained.

[0064] In some embodiments of the present invention, before obtaining the pressure of the gas cylinder before and after each refill, the following steps may be included:

[0065] B1. Obtain the cumulative usage time of the gas cylinder.

[0066] B2. Once the cumulative usage time reaches the lifespan threshold of the gas cylinder, an alarm message is issued to provide an alarm notification.

[0067] Specifically, the cumulative usage time of the gas cylinder is obtained and compared with the lifespan threshold of the gas cylinder. If the cumulative usage time is greater than or equal to the lifespan threshold, it means that there may be a safety hazard in the gas cylinder. In this case, even if the cumulative fatigue damage of the gas cylinder has not yet reached the alarm threshold, an alarm still needs to be triggered.

[0068] In some embodiments of the present invention, before obtaining the cumulative number of times the gas cylinder has been refilled, the following steps may be included:

[0069] C1. Obtain the pressure difference of the current refueling operation.

[0070] C2. Determine that the pressure difference of the current gas filling is greater than or equal to the pressure difference threshold, wherein the pressure difference threshold is the maximum pressure difference that will not cause damage to the gas cylinder.

[0071] Specifically, the aforementioned refueling pressure difference refers to the difference between the pressure before hydrogen is added to the gas cylinder and the pressure after hydrogen is added. The pressure before the last refueling can be denoted as Pbk, and the pressure after the refueling can be denoted as Pak. Therefore, the refueling pressure difference can be denoted as Pak - Pbk. Gas is considered to have been added to the gas cylinder only when Pak - Pbk is greater than or equal to the pressure difference threshold, and the refueling pressure difference for that instance is recorded.

[0072] The aforementioned differential pressure threshold is as follows: Figure 3 The fatigue limit P shown w If the pressure difference is less than or equal to P w If the gas cylinder has an infinite lifespan, the pressure difference during filling does not affect the cylinder's lifespan and is not included in the calculation of cumulative fatigue damage.

[0073] In summary, the early warning method for gas cylinders in this embodiment of the invention first obtains the cumulative number of times the gas cylinder has been refueled and the pressure before and after each refueling; it then calculates the refueling pressure difference based on the pressure before and after each refueling; finally, it calculates the cumulative fatigue damage based on the cumulative number of refuelings and the refueling pressure difference; and when the cumulative fatigue damage reaches an alarm threshold, it issues an alarm message to provide an alert. Therefore, this early warning method for gas cylinders, by calculating the cumulative fatigue damage of the gas cylinder, achieves early warning of the gas cylinder's lifespan, ensuring the safety of the facilities and personnel where the gas cylinder is located.

[0074] Furthermore, this invention proposes an on-board hydrogen storage system.

[0075] Figure 6 This is a structural block diagram of an on-board hydrogen storage system according to an embodiment of the present invention.

[0076] like Figure 6 As shown, the on-board hydrogen storage system 100 includes a gas cylinder 10, a pressure sensor 20, and an electronic control unit 30.

[0077] Specifically, the pressure sensor 20 is used to detect the pressure of the gas in the gas cylinder 10; the electronic control unit 30 is connected to the pressure sensor 20 and is used to obtain the cumulative number of hydrogen additions to the gas cylinder 10, and to obtain the pressure before and after each hydrogen addition, calculate the hydrogen addition pressure difference based on the pressure before and after each hydrogen addition, calculate the cumulative fatigue damage based on the cumulative number of hydrogen additions and the hydrogen addition pressure difference, and issue an alarm message to provide an alarm prompt when the cumulative fatigue damage reaches the alarm threshold.

[0078] This on-board hydrogen storage system can ensure the safety of the vehicle and people where the gas cylinders are located.

[0079] In one embodiment of the present invention, the on-board hydrogen storage system 100 further includes: a hydrogen refueling device for refueling the gas cylinder 10; a temperature sensor for detecting the temperature of the gas in the gas cylinder 10; wherein the electronic control unit 30 is also connected to the temperature sensor for controlling the hydrogen refueling device according to the temperature and pressure.

[0080] It should be noted that other specific embodiments of the on-board hydrogen storage system of this invention can be found in the above-described early warning method for the use of gas cylinders.

[0081] The vehicle-mounted hydrogen storage system of this invention includes a pressure sensor for detecting the pressure of the gas in the cylinder; and an electronic control unit connected to the pressure sensor for acquiring the cumulative number of hydrogen refills to the cylinder, acquiring the pressure before and after each refill, calculating the refill pressure difference based on the pressure before and after each refill, calculating cumulative fatigue damage based on the cumulative number of refills and the refill pressure difference, and issuing an alarm message when the cumulative fatigue damage reaches an alarm threshold. Thus, this vehicle-mounted hydrogen storage system, by calculating the cumulative fatigue damage of the cylinder, achieves cylinder lifespan early warning, ensuring the safety of the vehicle and its occupants.

[0082] Furthermore, the present invention proposes a vehicle.

[0083] Figure 7 This is a structural block diagram of a vehicle according to an embodiment of the present invention.

[0084] like Figure 7 As shown, vehicle 1000 includes on-board hydrogen storage system 100.

[0085] In this embodiment of the invention, the vehicle utilizes the aforementioned on-board hydrogen storage system. A pressure sensor detects the pressure of the gas in the cylinder. An electronic control unit, connected to the pressure sensor, acquires the cumulative number of hydrogen refills to the cylinder and the pressure before and after each refill. It calculates the refill pressure difference based on the pressure before and after each refill, calculates cumulative fatigue damage based on the cumulative number of refills and the refill pressure difference, and issues an alarm when the cumulative fatigue damage reaches an alarm threshold. Thus, this on-board hydrogen storage system, by calculating the cumulative fatigue damage of the cylinder, achieves early warning of the cylinder's lifespan, ensuring the safety of the vehicle and its occupants.

[0086] Furthermore, the present invention proposes a computer-readable storage medium.

[0087] In this embodiment of the invention, a computer program is stored thereon. When the computer program is executed by the processor, it implements the above-mentioned early warning method for the use of gas cylinders or the above-mentioned vehicle-mounted hydrogen storage system.

[0088] The computer-readable storage medium of this invention, when its computer program is executed by a processor, first acquires the cumulative number of times the gas cylinder has been refueled, and acquires the pressure before and after each refueling; it then calculates the refueling pressure difference based on the pressure before and after each refueling; finally, it calculates the cumulative fatigue damage based on the cumulative number of refuelings and the refueling pressure difference; and when the cumulative fatigue damage reaches an alarm threshold, it issues an alarm message to provide an alert. Therefore, this early warning method for gas cylinders, through the calculation of cumulative fatigue damage, achieves early warning of the gas cylinder's lifespan, ensuring the safety of the vehicle and personnel where the gas cylinder is located.

[0089] Furthermore, the present invention proposes an electronic device.

[0090] In this embodiment of the invention, the electronic device includes a memory, a processor, and a computer program stored in the memory. When the computer program is executed by the processor, it implements the above-described early warning method for the use of gas cylinders.

[0091] The electronic device of this invention, when its computer program is executed by a processor, first acquires the cumulative number of times the gas cylinder has been refueled, and acquires the pressure before and after each refueling; it then calculates the refueling pressure difference based on the pressure before and after each refueling; finally, it calculates the cumulative fatigue damage based on the cumulative number of refuelings and the refueling pressure difference; and when the cumulative fatigue damage reaches an alarm threshold, it issues an alarm message to provide an alert. Thus, the early warning method used for this gas cylinder, through the calculation of the cumulative fatigue damage of the gas cylinder, achieves early warning of the gas cylinder's lifespan, ensuring the safety of the vehicle and people where the gas cylinder is located.

[0092] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0093] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0094] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0096] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0097] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0098] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0099] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for early warning of gas cylinder use, characterized in that, The method includes: Obtain the pressure of the gas cylinder before and after each refill, and calculate the corresponding refill pressure difference for each refill. Obtain the cumulative number of times the gas cylinder is filled, and calculate the cumulative fatigue damage based on the cumulative number of times the gas cylinder is filled and the filling pressure difference; When the cumulative fatigue damage reaches the alarm threshold, an alarm message is issued to provide an alarm notification. The calculation of cumulative fatigue damage based on the cumulative number of gas refuelings and the gas refueling pressure difference includes: Record each gas refueling pressure difference in the cumulative number of gas refueling times, and count the number of times each gas refueling pressure difference occurs; The number of cycles corresponding to each gas filling pressure difference is determined based on the respective gas filling pressure difference. Calculate the ratio of the number of occurrences of each gas pressure difference to the number of cycles, and sum all ratios to obtain the cumulative fatigue damage.

2. The early warning method for the use of gas cylinders according to claim 1, characterized in that, Before obtaining the pressure of the gas cylinder before and after each refill, the method further includes: Obtain the cumulative usage time of the gas cylinder; Once the cumulative usage time is determined to have reached the lifespan threshold of the gas cylinder, an alarm message is issued to provide an alert.

3. The early warning method for the use of gas cylinders according to claim 1, characterized in that, Before obtaining the cumulative number of times the gas cylinder has been refilled, the method further includes: Obtain the pressure difference of the current refueling operation; Determine that the current gas refueling pressure difference is greater than or equal to the pressure difference threshold.

4. The early warning method for the use of gas cylinders according to claim 1, characterized in that, The number of iterations is calculated using the following formula: C= *N, Where C is a constant and is related to the vehicle's B10 lifespan, P is the refueling pressure difference, n is a coefficient and is related to the material used in the gas cylinder, and N is the number of cycles.

5. An on-board hydrogen storage system, characterized in that, The system includes: Gas cylinder; A pressure sensor is used to detect the pressure of the gas in the gas cylinder; An electronic control unit, connected to the pressure sensor, is used to acquire the cumulative number of hydrogen additions to the gas cylinder and the pressure before and after each hydrogen addition. It calculates the hydrogen addition pressure difference based on the pressure before and after each hydrogen addition, calculates the cumulative fatigue damage based on the cumulative number of hydrogen additions and the hydrogen addition pressure difference, and issues an alarm message to provide an alarm prompt when the cumulative fatigue damage reaches the alarm threshold. The calculation of cumulative fatigue damage based on the cumulative number of hydrogenation cycles and the hydrogenation pressure difference includes: Record each hydrogenation pressure difference in the cumulative number of hydrogenation additions, and count the number of occurrences of each hydrogenation pressure difference; The number of cycles corresponding to each hydrogenation pressure difference is determined based on each hydrogenation pressure difference. Calculate the ratio of the number of occurrences of each hydrogenation pressure difference to the number of cycles, and sum all ratios to obtain the cumulative fatigue damage.

6. A vehicle, characterized in that, Including the on-board hydrogen storage system as described in claim 5.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1-4.

8. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory, which, when executed by the processor, implements the early warning method for the use of gas cylinders as described in any one of claims 1-4.

Images