Hydrogen filling control method, equipment and medium

Abstract

The invention discloses a hydrogen filling control method and device and a medium, relates to the technical field of hydrogen energy filling, and solves the problem that multi-dimensional influence factors cannot be effectively controlled in the hydrogen filling process. The method comprises the steps that hydrogen filling is pretreated before hydrogen is filled into a gas storage tank; according to the initial environment temperature and the environment temperature change absolute value, the precooling stage of hydrogen filling is treated, and the precooling gas flow of hydrogen filling is obtained through treatment; according to the real-time temperature and the temperature change rate in the gas storage tank, the rapid filling stage of hydrogen filling is preliminarily analyzed, and the corrected gas flow of hydrogen filling is obtained through analysis; carrying out advanced analysis on the rapid filling stage of hydrogen filling according to the pressure difference value in the gas storage tank, and analyzing to obtain secondary correction gas flow of filled hydrogen; and the stability of hydrogen filling in the stable filling stage is analyzed according to the real-time pressure. The multi-dimensional influence factors are effectively controlled in the hydrogen filling process.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydrogen energy filling, and specifically relates to a hydrogen filling control method, equipment and medium. Background Art

[0002] As an important carrier of clean energy, hydrogen energy has shown great potential in the fields of transportation and energy storage. Hydrogen refueling technology is the core link in the commercial application of hydrogen fuel cell vehicles. Its safety, efficiency and compatibility directly affect the popularization of hydrogen energy infrastructure.

[0003] However, the existing hydrogen filling technology still has significant defects, which are as follows: hydrogen will produce a significant temperature rise during rapid filling due to the adiabatic compression effect and the Joule-Thomson effect. Traditional technologies mostly use fixed flow filling or single pressure threshold control, which leads to drastic temperature fluctuations in the hydrogen storage tank. At the same time, traditional technologies rely on threshold-triggered alarms to detect risks such as sudden pressure drops and abnormal temperature gradients, and lack a graded response strategy.

[0004] To this end, the present invention proposes a hydrogen filling control method, equipment and medium. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a hydrogen filling control method, equipment and medium.

[0006] The technical problems to be solved by the present invention are:

[0007] It is impossible to effectively control the multi-dimensional influencing factors during the hydrogen filling process.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] In a first aspect, a hydrogen filling control method is provided, the method comprising the following sub-steps:

[0010] Step S1, pre-treating the hydrogen before filling the hydrogen into the gas storage tank;

[0011] Step S2, processing the precooling stage of hydrogen filling according to the initial ambient temperature and the absolute value of the ambient temperature change, and obtaining the precooling gas flow rate of hydrogen filling;

[0012] Step S3, performing a preliminary analysis on the rapid filling phase of hydrogen filling according to the real-time temperature and the temperature change rate in the gas storage tank, and obtaining a corrected gas flow rate of hydrogen filling;

[0013] Step S4, performing advanced analysis on the rapid filling phase of hydrogen filling according to the pressure difference value in the gas storage tank, and obtaining a secondary corrected gas flow rate of hydrogen filling by analysis;

[0014] Step S5, analyzing the stability of hydrogen filling during the stable filling stage according to the real-time pressure.

[0015] Furthermore, the step S1 includes the following sub-steps:

[0016] Step S11, the process of filling hydrogen into the gas storage tank is divided into a pre-cooling stage, a rapid filling stage and a stable filling stage;

[0017] Step S12, presetting a pressure limit threshold value P1 of the gas storage tank according to specification data of the gas storage tank, wherein the specification data of the gas storage tank includes the inner diameter, height, capacity and working pressure of the gas storage tank.

[0018] Furthermore, the step S2 includes the following sub-steps:

[0019] Step S21, obtaining the current ambient temperature of the area where the gas storage tank is located, recording the current ambient temperature as the initial ambient temperature, and determining the initial gas flow rate Q1 used for filling hydrogen in the precooling stage according to the initial ambient temperature;

[0020] Step S22, adding low-temperature hydrogen to the gas storage tank at an initial gas flow rate, and collecting the real-time ambient temperature of the current environment at fixed time intervals, recording the time point when the real-time ambient temperature of the current environment is collected as the time node, subtracting the initial ambient temperature from the real-time ambient temperature to obtain the ambient temperature change TH at the corresponding time node, and taking the absolute value of the ambient temperature change at the corresponding time node to obtain the absolute value of the ambient temperature change.

[0021] Furthermore, the step S2 further includes the following sub-steps:

[0022] Step S23: if the absolute values ​​of the ambient temperature changes corresponding to all time nodes are less than the change threshold, no operation is performed; if the absolute value of the ambient temperature change corresponding to any time node is greater than or equal to the change threshold, proceed to the next step;

[0023] Step S24, calculating the adjusted gas flow rate Q2 of hydrogen filling according to the formula Q2=Q1-TH×k1, wherein k1 is the gas flow adjustment amount of hydrogen filling when the ambient temperature changes by one unit;

[0024] Step S25, adjusting the initial gas flow rate of hydrogen filling to the adjusted gas flow rate to pre-cool the gas storage tank until the real-time temperature in the gas storage tank reaches the standard range;

[0025] Step S26, the gas flow rate of hydrogen added when the pre-cooling stage is completed is recorded as the pre-cooling gas flow rate Qy.

[0026] Furthermore, the step S3 includes the following sub-steps:

[0027] Step S31, collecting the real-time temperature in the gas storage tank at multiple time nodes, and calculating the temperature change rate SL in the gas storage tank by the formula SL=|(Ta-Tb)| / △t, where Ta is the real-time temperature in the gas storage tank at the current time node, Tb is the real-time temperature in the gas storage tank at the previous time node, and △t is the time interval between the two time nodes;

[0028] Step S32, if the temperature change rate in the gas storage tank is less than the second change threshold, no operation is performed;

[0029] If the temperature change rate in the gas storage tank is greater than or equal to the first change threshold, the filling operation is stopped;

[0030] If the temperature change rate in the gas tank is less than the first change threshold and greater than or equal to the second change threshold, proceed to the next step; wherein the second change threshold is less than the first change threshold.

[0031] Furthermore, the step S3 also includes the following sub-steps:

[0032] Step S33, when the real-time temperature in the gas storage tank belongs to the first temperature range, hydrogen is added to keep the pre-cooling gas flow rate to fill the gas storage tank;

[0033] Step S34, when the real-time temperature in the gas storage tank belongs to the second temperature range, the pre-cooling gas flow rate of hydrogen filling is adjusted to the corrected gas flow rate, specifically:

[0034] The corrected gas flow rate Q for hydrogen filling is calculated by the formula Q=Qy-(T-T1)×k2, where T is the real-time temperature in the gas storage tank at the current time node, T1 is the left end point of the second temperature interval, and k2 is the gas flow adjustment amount for hydrogen filling when the real-time temperature in the gas storage tank changes by one unit in the second temperature interval;

[0035] Step S35, when the real-time temperature in the gas storage tank belongs to the third temperature range, the corrected gas flow rate of hydrogen filling is reduced in a stepwise manner;

[0036] Among them, the values ​​in the first temperature interval are all smaller than the values ​​in the second temperature interval, and the values ​​in the second temperature interval are all smaller than the values ​​in the third temperature interval;

[0037] Step S36, filling hydrogen into the gas storage tank according to the pre-cooling gas flow rate or the corrected gas flow rate.

[0038] Furthermore, the step S4 comprises the following sub-steps:

[0039] Step S41, collecting the real-time pressure in the gas storage tank at multiple time nodes, and subtracting the real-time pressure in the gas storage tank at multiple time nodes from the pressure limit threshold of the gas storage tank to obtain the pressure difference value in the gas storage tank at the corresponding time nodes;

[0040] Step S42, if the pressure difference value in the gas storage tank is greater than or equal to the pressure stability threshold at any time point, continue to fill the gas storage tank according to the pre-cooling gas flow rate or the corrected gas flow rate of hydrogen filling;

[0041] Step S43: if the pressure difference values ​​in the gas storage tank at all time nodes are less than the pressure stability threshold, proceed to the next step;

[0042] Step S44, the secondary corrected gas flow rate QX of hydrogen filling is calculated by the formula QX=△P / P1×Q, wherein △P is the pressure difference value in the gas storage tank at the current time node;

[0043] Step S45, filling the gas storage tank with hydrogen at a secondary corrected gas flow rate until the rapid filling stage of hydrogen filling is completed.

[0044] Furthermore, the step S5 includes the following sub-steps:

[0045] Step S51, if the real-time pressure in the gas storage tank at all time nodes is within the first pressure range, then stop hydrogen filling;

[0046] Step S52: if the real-time pressure in the gas storage tank at any time point is within the second pressure range, proceed to the next step;

[0047] Step S53, counting the number of time nodes at which the real-time pressure in the gas storage tank is within the second pressure interval, and recording the corresponding number of time nodes as the number of deviation time nodes;

[0048] Step S54: if the number of deviation time nodes is greater than or equal to the quantity threshold, hydrogen is periodically added to the gas storage tank;

[0049] Step S55: if the number of deviation time nodes is less than the quantity threshold, no operation is performed;

[0050] Among them, the values ​​in the first pressure range are all smaller than the values ​​in the second pressure range.

[0051] In a second aspect, an electronic device is provided, characterized in that the electronic device comprises:

[0052] A memory storing a computer program;

[0053] A processor is communicatively connected to the memory, and when the computer program is executed by the processor, the hydrogen filling control method is implemented.

[0054] In a third aspect, a computer-readable storage medium is also provided, on which a computer program is stored, characterized in that when the program is executed by a processor, the hydrogen filling control method is implemented.

[0055] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0056] 1. The present invention first pre-treats the hydrogen filling before filling the hydrogen into the gas tank. The pre-treatment divides the hydrogen filling process into different stages. Then, the pre-cooling stage of the hydrogen filling is processed according to the initial ambient temperature and the absolute value of the ambient temperature change to obtain the pre-cooling gas flow of the hydrogen filling. The present invention realizes the segmentation and pre-cooling operation of the hydrogen filling process.

[0057] 2. The present invention also performs a preliminary analysis on the rapid filling stage of hydrogen filling based on the real-time temperature and the temperature change rate in the gas tank, and obtains the corrected gas flow rate of hydrogen filling through the analysis. Then, the rapid filling stage of hydrogen filling is advanced analyzed based on the pressure difference value in the gas tank, and the secondary corrected gas flow rate of hydrogen filling is obtained through the analysis. Finally, the stability of hydrogen filling in the stable filling stage is analyzed based on the real-time pressure. The present invention realizes the control of abnormal conditions caused by different influencing factors during the hydrogen filling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0059] Figure 1 is a flow chart of the method of the present invention;

[0060] Figure 2 It is a schematic diagram of the hydrogen filling process in the present invention;

[0061] Figure 3 It is a schematic diagram of the structure of the electronic device in the present invention. DETAILED DESCRIPTION

[0062] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] Example 1: Please refer to Figure 1 and Figure 2 As shown, the technical solution provided by the present invention is: a hydrogen filling control method, the method is specifically as follows:

[0064] In this embodiment, hydrogen is stored in a gas container of fixed capacity, and the corresponding gas container is recorded as a gas storage tank;

[0065] Step S1, pre-treating the hydrogen before filling the hydrogen into the gas storage tank;

[0066] In this embodiment, step S1 includes the following sub-steps:

[0067] Step S11, as Figure 2 As shown, the process of filling hydrogen into the gas tank is divided into a precooling stage, a rapid filling stage and a stable filling stage;

[0068] Step S12, presetting the pressure limit threshold value P1 of the gas storage tank according to the specification data of the gas storage tank; specifically, the specification data of the gas storage tank can be obtained from the specification manual corresponding to the gas storage tank, and the specification data of the gas storage tank includes the inner diameter, height, capacity and working pressure of the gas storage tank.

[0069] In this embodiment, the hydrogen filling is pre-treated and then enters the pre-cooling stage of the hydrogen filling;

[0070] Step S2, processing the precooling stage of hydrogen filling according to the initial ambient temperature and the absolute value of the ambient temperature change, and obtaining the precooling gas flow rate of hydrogen filling;

[0071] In this embodiment, step S2 includes the following sub-steps:

[0072] Step S21, obtain the current ambient temperature of the area where the gas storage tank is located, record the current ambient temperature as the initial ambient temperature, and determine the initial gas flow rate Q1 used for filling hydrogen in the precooling stage according to the initial ambient temperature. Specifically, it can be determined from the corresponding relationship table between the initial ambient temperature and the initial gas flow rate used for filling hydrogen in the precooling stage. The corresponding relationship table is as follows:

[0073] Initial ambient temperature (°C) Initial gas flow rate (ml / s) [-40，0) 70 [0，10) 65 [10，20) 58 [20，30) 45 [30，40) 28 [40，50) 10

[0074] Step S22, adding low-temperature hydrogen to the gas storage tank at the initial gas flow rate, and collecting the real-time ambient temperature of the current environment at fixed time intervals, recording the time point when the real-time ambient temperature of the current environment is collected as the time node, subtracting the initial ambient temperature from the real-time ambient temperature to obtain the ambient temperature change TH at the corresponding time node, and taking the absolute value of the ambient temperature change at the corresponding time node to obtain the absolute value of the ambient temperature change;

[0075] In this embodiment, the gas temperature of the cryogenic hydrogen is minus 40 degrees Celsius;

[0076] Step S23: if the absolute values ​​of the ambient temperature changes corresponding to all time nodes are less than the change threshold, no operation is performed; if the absolute value of the ambient temperature change corresponding to any time node is greater than or equal to the change threshold, proceed to the next step;

[0077] Step S24, calculating the adjusted gas flow rate Q2 of hydrogen filling according to the formula Q2=Q1-TH×k1, wherein k1 is the gas flow adjustment amount of hydrogen filling when the ambient temperature changes by one unit; in this embodiment, the adjusted gas flow rate of hydrogen filling is less than or equal to 70 ml / s;

[0078] Step S25, adjusting the initial gas flow rate of hydrogen filling to the adjusted gas flow rate to pre-cool the gas storage tank until the real-time temperature in the gas storage tank reaches the standard range. It should be explained that the standard range of the real-time temperature in the gas storage tank is minus 35 to minus 30 degrees Celsius;

[0079] Step S26, the gas flow rate of hydrogen added when the pre-cooling stage is completed is recorded as the pre-cooling gas flow rate Qy.

[0080] In this embodiment, after the precooling stage of hydrogen filling is completed, the hydrogen filling enters the rapid filling stage;

[0081] Step S3, performing a preliminary analysis on the rapid filling phase of hydrogen filling according to the real-time temperature and the temperature change rate in the gas storage tank, and obtaining a corrected gas flow rate of hydrogen filling;

[0082] In this embodiment, step S3 includes the following sub-steps:

[0083] Step S31, collecting the real-time temperature in the gas storage tank at multiple time nodes, and calculating the temperature change rate SL in the gas storage tank by the formula SL=|(Ta-Tb)| / △t, where Ta is the real-time temperature in the gas storage tank at the current time node, Tb is the real-time temperature in the gas storage tank at the previous time node, and △t is the time interval between the two time nodes;

[0084] Step S32, if the temperature change rate in the gas storage tank is less than the second change threshold, no operation is performed;

[0085] If the temperature change rate in the gas storage tank is greater than or equal to the first change threshold, the filling operation is stopped;

[0086] If the temperature change rate in the gas storage tank is less than the first change threshold and greater than or equal to the second change threshold, proceed to the next step; wherein the second change threshold is less than the first change threshold;

[0087] Step S33, when the real-time temperature in the gas storage tank belongs to the first temperature range, hydrogen is added to maintain the pre-cooling gas flow rate to fill the gas storage tank; specifically, during the filling process, the pre-cooling gas flow rate is allowed to have a gas flow deviation of ±5%;

[0088] Step S34, when the real-time temperature in the gas storage tank belongs to the second temperature range, the pre-cooling gas flow rate of hydrogen filling is adjusted to the corrected gas flow rate, specifically:

[0089] The corrected gas flow rate Q for hydrogen filling is calculated by the formula Q=Qy-(T-T1)×k2, where T is the real-time temperature in the gas storage tank at the current time node, T1 is the left end point of the second temperature interval, and k2 is the gas flow adjustment amount for hydrogen filling when the real-time temperature in the gas storage tank changes by one unit in the second temperature interval;

[0090] Step S35, when the real-time temperature in the gas storage tank belongs to the third temperature range, the corrected gas flow rate of hydrogen filling is reduced in a stepwise manner;

[0091] In this embodiment, when the real-time temperature belongs to the third temperature range, the corrected gas flow rate of hydrogen filling is reduced by 5 units for every 2 degrees Celsius increase in the real-time temperature;

[0092] Among them, the values ​​in the first temperature interval are all smaller than the values ​​in the second temperature interval, and the values ​​in the second temperature interval are all smaller than the values ​​in the third temperature interval;

[0093] Step S36, filling hydrogen into the gas storage tank according to the pre-cooling gas flow rate or the corrected gas flow rate.

[0094] Step S4, performing advanced analysis on the rapid filling phase of hydrogen filling according to the pressure difference value in the gas storage tank, and obtaining a secondary corrected gas flow rate of hydrogen filling by analysis;

[0095] In this embodiment, step S4 includes the following sub-steps:

[0096] Step S41, collecting the real-time pressure in the gas storage tank at multiple time nodes, subtracting the real-time pressure in the gas storage tank at multiple time nodes from the pressure limit threshold of the gas storage tank to obtain the pressure difference value in the gas storage tank at the corresponding time nodes. It should be explained that the real-time pressure in the gas storage tank is less than or equal to the pressure limit threshold of the gas storage tank;

[0097] Step S42, if the pressure difference value in the gas storage tank is greater than or equal to the pressure stability threshold at any time point, continue to fill the gas storage tank according to the pre-cooling gas flow rate or the corrected gas flow rate of hydrogen filling;

[0098] Step S43: if the pressure difference values ​​in the gas storage tank at all time nodes are less than the pressure stability threshold, proceed to the next step;

[0099] Step S44, the secondary corrected gas flow rate QX of hydrogen filling is calculated by the formula QX=△P / P1×Q, wherein △P is the pressure difference value in the gas storage tank at the current time node;

[0100] Step S45, filling the gas storage tank with hydrogen at a secondary corrected gas flow rate until the rapid filling stage of hydrogen filling is completed.

[0101] In this embodiment, after the rapid filling stage of hydrogen filling is completed, the hydrogen filling enters the stable filling stage;

[0102] Step S5, analyzing the stability of hydrogen filling during the stable filling stage according to the real-time pressure;

[0103] In this embodiment, step S5 includes the following sub-steps:

[0104] Step S51, if the real-time pressure in the gas storage tank at all time nodes is within the first pressure range, indicating that hydrogen filling is in a stable state, then hydrogen filling is stopped;

[0105] Step S52: if the real-time pressure in the gas storage tank at any time point is within the second pressure range, proceed to the next step;

[0106] Step S53, counting the number of time nodes at which the real-time pressure in the gas storage tank is within the second pressure interval, and recording the corresponding number of time nodes as the number of deviation time nodes;

[0107] Step S54: if the number of deviation time nodes is greater than or equal to the quantity threshold, it indicates that the hydrogen filling is in an unstable state as a whole, and hydrogen is periodically added to the gas storage tank. In this embodiment, hydrogen is added to the gas storage tank at a fixed time period, and the filling is stopped for 3 seconds after each 2 seconds of hydrogen filling into the gas storage tank.

[0108] Step S55: if the number of deviation time nodes is less than the quantity threshold, it means that the hydrogen filling is in a stable state as a whole, and no operation is performed, that is, hydrogen filling is stopped;

[0109] Among them, the values ​​in the first pressure range are all smaller than the values ​​in the second pressure range.

[0110] In this application, if corresponding calculation formulas appear, the above calculation formulas are all dimensionless and take their numerical calculations. The weight coefficients, proportional coefficients and other coefficients in the formulas are set to a result value obtained by quantifying each parameter. The size of the weight coefficient and the proportional coefficient can be determined as long as it does not affect the proportional relationship between the parameter and the result value.

[0111] Embodiment 2: Figure 3The present invention is a structural diagram of an electronic device, which may include: a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory communicate with each other through the communication bus. The processor may call the logic instructions in the memory to execute a hydrogen filling control method, which includes: pre-processing the hydrogen filling before filling the hydrogen into the gas tank; processing the pre-cooling stage of the hydrogen filling according to the initial ambient temperature and the absolute value of the ambient temperature change, and obtaining the pre-cooling gas flow of the hydrogen filling; performing a preliminary analysis on the rapid filling stage of the hydrogen filling according to the real-time temperature and the temperature change rate in the gas tank, and obtaining the corrected gas flow of the hydrogen filling; performing an advanced analysis on the rapid filling stage of the hydrogen filling according to the pressure difference value in the gas tank, and obtaining the secondary corrected gas flow of the hydrogen filling; and analyzing the stability of the hydrogen filling in the stable filling stage according to the real-time pressure.

[0112] In addition, the logic instructions in the above-mentioned memory can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0113] On the other hand, the present application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute a hydrogen filling control method provided by the above methods, which method includes: pre-processing the hydrogen filling before filling the hydrogen into the gas tank; processing the pre-cooling stage of the hydrogen filling according to the initial ambient temperature and the absolute value of the ambient temperature change, and obtaining the pre-cooling gas flow of the hydrogen filling; performing a preliminary analysis on the rapid filling stage of the hydrogen filling according to the real-time temperature and the temperature change rate in the gas tank, and obtaining the corrected gas flow of the hydrogen filling; performing an advanced analysis on the rapid filling stage of the hydrogen filling according to the pressure difference value in the gas tank, and obtaining the secondary corrected gas flow of the hydrogen filling; analyzing the stability of the hydrogen filling when it is in the stable filling stage according to the real-time pressure.

[0114] On the other hand, the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute a hydrogen filling control method provided above, the method comprising: pre-processing the hydrogen filling before filling the hydrogen into the gas tank; processing the pre-cooling stage of the hydrogen filling according to the initial ambient temperature and the absolute value of the ambient temperature change, and obtaining the pre-cooling gas flow rate of the hydrogen filling; performing a preliminary analysis on the rapid filling stage of the hydrogen filling according to the real-time temperature and the temperature change rate in the gas tank, and obtaining the corrected gas flow rate of the hydrogen filling; performing an advanced analysis on the rapid filling stage of the hydrogen filling according to the pressure difference value in the gas tank, and obtaining the secondary corrected gas flow rate of the hydrogen filling; and analyzing the stability of the hydrogen filling during the stable filling stage according to the real-time pressure.

[0115] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0117] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A hydrogen filling control method, characterized in that: The method comprises the following sub-steps: Step S1, pre-treating the hydrogen before filling the hydrogen into the gas storage tank; Step S2, processing the precooling stage of hydrogen filling according to the initial ambient temperature and the absolute value of the ambient temperature change, and obtaining the precooling gas flow rate of hydrogen filling; Step S3, performing a preliminary analysis on the rapid filling phase of hydrogen filling according to the real-time temperature and the temperature change rate in the gas storage tank, and obtaining a corrected gas flow rate of hydrogen filling; Step S4, performing advanced analysis on the rapid filling phase of hydrogen filling according to the pressure difference value in the gas storage tank, and obtaining a secondary corrected gas flow rate of hydrogen filling by analysis; Step S5, analyzing the stability of hydrogen filling during the stable filling stage according to the real-time pressure.

2. A hydrogen filling control method according to claim 1, characterized in that: The step S1 includes the following sub-steps: Step S11, the process of filling hydrogen into the gas storage tank is divided into a pre-cooling stage, a rapid filling stage and a stable filling stage; Step S12, presetting a pressure limit threshold value P1 of the gas storage tank according to specification data of the gas storage tank, wherein the specification data of the gas storage tank includes the inner diameter, height, capacity and working pressure of the gas storage tank.

3. A hydrogen filling control method according to claim 2, characterized in that: The step S2 includes the following sub-steps: Step S21, obtaining the current ambient temperature of the area where the gas storage tank is located, recording the current ambient temperature as the initial ambient temperature, and determining the initial gas flow rate Q1 used for filling hydrogen in the precooling stage according to the initial ambient temperature; Step S22, adding low-temperature hydrogen to the gas storage tank at an initial gas flow rate, and collecting the real-time ambient temperature of the current environment at fixed time intervals, recording the time point when the real-time ambient temperature of the current environment is collected as the time node, subtracting the initial ambient temperature from the real-time ambient temperature to obtain the ambient temperature change TH at the corresponding time node, and taking the absolute value of the ambient temperature change at the corresponding time node to obtain the absolute value of the ambient temperature change.

4. A hydrogen filling control method according to claim 3, characterized in that: The step S2 further comprises the following sub-steps: Step S23: if the absolute values ​​of the ambient temperature changes corresponding to all time nodes are less than the change threshold, no operation is performed; if the absolute value of the ambient temperature change corresponding to any time node is greater than or equal to the change threshold, proceed to the next step; Step S24, calculating the adjusted gas flow rate Q2 of hydrogen filling according to the formula Q2=Q1-TH×k1, wherein k1 is the gas flow adjustment amount of hydrogen filling when the ambient temperature changes by one unit; Step S25, adjusting the initial gas flow rate of hydrogen filling to the adjusted gas flow rate to pre-cool the gas storage tank until the real-time temperature in the gas storage tank reaches the standard range; Step S26, the gas flow rate of hydrogen added when the pre-cooling stage is completed is recorded as the pre-cooling gas flow rate Qy.

5. A hydrogen filling control method according to claim 4, characterized in that: The step S3 includes the following sub-steps: Step S31, collecting the real-time temperature in the gas storage tank at multiple time nodes, and calculating the temperature change rate SL in the gas storage tank by the formula SL=|(Ta-Tb)| / △t, where Ta is the real-time temperature in the gas storage tank at the current time node, Tb is the real-time temperature in the gas storage tank at the previous time node, and △t is the time interval between the two time nodes; Step S32, if the temperature change rate in the gas storage tank is less than the second change threshold, no operation is performed; If the temperature change rate in the gas storage tank is greater than or equal to the first change threshold, the filling operation is stopped; If the temperature change rate in the gas tank is less than the first change threshold and greater than or equal to the second change threshold, proceed to the next step; wherein the second change threshold is less than the first change threshold.

6. A hydrogen filling control method according to claim 5, characterized in that: The step S3 further comprises the following sub-steps: Step S33, when the real-time temperature in the gas storage tank belongs to the first temperature range, hydrogen is added to keep the pre-cooling gas flow rate to fill the gas storage tank; Step S34, when the real-time temperature in the gas storage tank belongs to the second temperature range, the pre-cooling gas flow rate of hydrogen filling is adjusted to the corrected gas flow rate, specifically: The corrected gas flow rate Q for hydrogen filling is calculated by the formula Q=Qy-(T-T1)×k2, where T is the real-time temperature in the gas storage tank at the current time node, T1 is the left end point of the second temperature interval, and k2 is the gas flow adjustment amount for hydrogen filling when the real-time temperature in the gas storage tank changes by one unit in the second temperature interval; Step S35, when the real-time temperature in the gas storage tank belongs to the third temperature range, the corrected gas flow rate of hydrogen filling is reduced in a stepwise manner; Among them, the values ​​in the first temperature interval are all smaller than the values ​​in the second temperature interval, and the values ​​in the second temperature interval are all smaller than the values ​​in the third temperature interval; Step S36, filling hydrogen into the gas storage tank according to the pre-cooling gas flow rate or the corrected gas flow rate.

7. A hydrogen filling control method according to claim 6, characterized in that: The step S4 comprises the following sub-steps: Step S41, collecting the real-time pressure in the gas storage tank at multiple time nodes, and subtracting the real-time pressure in the gas storage tank at multiple time nodes from the pressure limit threshold of the gas storage tank to obtain the pressure difference value in the gas storage tank at the corresponding time nodes; Step S42, if the pressure difference value in the gas storage tank is greater than or equal to the pressure stability threshold at any time point, continue to fill the gas storage tank according to the pre-cooling gas flow rate or the corrected gas flow rate of hydrogen filling; Step S43, if the pressure difference values ​​in the gas storage tank at all time nodes are less than the pressure stability threshold, proceed to the next step; Step S44, the secondary corrected gas flow rate QX of hydrogen filling is calculated by the formula QX=△P / P1×Q, wherein △P is the pressure difference value in the gas storage tank at the current time node; Step S45, filling the gas storage tank with hydrogen at a secondary corrected gas flow rate until the rapid filling stage of hydrogen filling is completed.

8. A hydrogen filling control method according to claim 7, characterized in that: The step S5 comprises the following sub-steps: Step S51, if the real-time pressure in the gas storage tank at all time nodes is within the first pressure range, then stop hydrogen filling; Step S52: if the real-time pressure in the gas storage tank at any time point is within the second pressure range, proceed to the next step; Step S53, counting the number of time nodes at which the real-time pressure in the gas storage tank is within the second pressure interval, and recording the corresponding number of time nodes as the number of deviation time nodes; Step S54: if the number of deviation time nodes is greater than or equal to the quantity threshold, hydrogen is periodically added to the gas storage tank; Step S55: if the number of deviation time nodes is less than the quantity threshold, no operation is performed; Among them, the values ​​in the first pressure range are all smaller than the values ​​in the second pressure range.

9. An electronic device, characterized in that: The electronic device comprises: A memory storing a computer program; A processor is communicatively connected to the memory, and when the computer program is executed by the processor, the method described in any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 8 is implemented.

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