Vehicle hydrogenation detection control method and system

Abstract

The invention relates to the technical field of electric braking systems of general vehicles, in particular to a vehicle hydrogenation detection control method and system.The method comprises the steps that the pressure value of a target hydrogen canning cavity of a target vehicle is obtained, and a pressure data set is obtained; performing difference analysis on the pressure data set, wherein an analysis result set is a difference data set; based on a threshold model, judging the difference data set to obtain a judgment data set; performing hydrogenation based on the judgment data set; comparing the pressure of the target hydrogen canning cavity after hydrogenation; and on the basis of the comparison result, hydrogenation start-stop control is executed. According to the method, through cooperation of the threshold value model and the difference value data set, rapid and timely hydrogenation detection control over the vehicle is achieved; meanwhile, due to the fact that the pressure of the target hydrogen canning cavity after hydrogenation can be compared, real-time control over the hydrogenation process can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of electric brake systems for general vehicles, and in particular to a vehicle hydrogen refueling detection and control method, and also to a system. Background Art

[0002] As energy issues become increasingly prominent, new energy vehicles have become a research hotspot for major automobile manufacturers and research and development institutions around the world. Among them, fuel cell vehicles are generally considered to have broad development prospects due to their high efficiency and near-zero emissions. Fuel cell vehicles use hydrogen storage systems as devices to store hydrogen. The hydrogen energy storage technology of the hydrogen storage system uses surplus electricity to produce hydrogen that can be stored for a long time, becoming an energy storage carrier. However, at present, it is impossible to conduct long-term evaluation and analysis of the status of the hydrogen storage system of fuel cell vehicles, lacking correction and comparison, and the long-term operation of the hydrogen storage system is prone to inaccurate leakage detection due to aging of components.

[0003] The current publication date is December 27, 2022, the publication number is CN115520122A, and the name is a detection system, method and storage medium for a fuel cell vehicle hydrogen storage system, which discloses a control module, a fuel cell vehicle, a hydrogen refueling station and a supervision and detection module; the control module is communicated with the fuel cell vehicle, the hydrogen refueling station and the supervision and detection module respectively; the control module is used to receive the hydrogen storage system regular inspection information sent by the fuel cell vehicle, and generate vehicle inspection information based on the hydrogen storage system regular inspection information; it is also used to send the vehicle inspection information to the supervision and detection module; it is also used to receive the hydrogen filling information feedback from the hydrogen refueling station, and judge whether the hydrogen storage system is in a healthy state based on the hydrogen filling information.

[0004] The above technical solution can guide the regular inspection of the hydrogen storage system of fuel cell vehicles and promote the sound, orderly and healthy development of the fuel cell industry, but it still cannot achieve effective and rapid hydrogenation detection control. Summary of the invention

[0005] The inventors have found through research that the current hydrogen storage method for fuel cell vehicles is high-pressure hydrogen cylinders. At the same time, due to the flammable and explosive properties of hydrogen and management regulations such as the transportation of hazardous chemicals, hydrogen cylinders in the hydrogen system are not allowed to be filled with hydrogen when they leave the factory. Therefore, the cylinders are usually filled with nitrogen slightly higher than normal pressure (about 110-150KPa) when they leave the factory to keep the cylinders at a positive pressure to prevent air from entering.

[0006] The purpose of the present application is to provide a vehicle hydrogenation detection control method and system, which, through a threshold model, solves the technical problem that the prior art cannot provide a method and system for quickly performing hydrogenation detection control on a vehicle.

[0007] According to one aspect of the present application, a vehicle hydrogen refueling detection control method is provided, the method being executed by a processor, comprising:

[0008] Obtaining a pressure value of a target hydrogen tank cavity of a target vehicle to obtain a pressure data set;

[0009] Performing difference analysis on the pressure data set, and the analysis result set is a difference data set;

[0010] Based on the threshold model, a judgment is performed on the difference data set to obtain a judgment data set;

[0011] Based on the judgment data set, hydrogenation is performed;

[0012] Comparing the pressure of the target hydrogen tank cavity after hydrogenation;

[0013] Based on the comparison results, hydrogenation start-stop control is performed.

[0014] In some embodiments, the pressure value of the target hydrogen tank cavity of the target vehicle is obtained to obtain a pressure data set, specifically:

[0015] Obtain the latest pressure value in the target hydrogen tank cavity before hydrogenation;

[0016] Perform data cleaning on the pressure value to obtain accurate pressure value.

[0017] In some embodiments, the difference analysis is performed on the pressure data set, and the analysis result set is a difference data set, specifically:

[0018] Perform differential comparison on the accurate pressure value based on the standard pressure value;

[0019] The comparison results are clustered to obtain a difference data set.

[0020] In some embodiments, based on the threshold model, a judgment is performed on the difference data set to obtain a judgment data set, specifically:

[0021] The data in the difference data set are configured in the threshold model to perform judgment;

[0022] Clustering is performed on the judgment results to at least divide them into qualified data and unqualified data.

[0023] In some embodiments, the threshold model is:

[0024]

[0025] Where, E is the qualified rate; E1 is the qualified data pressure value; E 绝 is the absolute pressure value; |Ε1-Ε 绝 | is the difference between the qualified data pressure value and the absolute pressure value.

[0026] In some embodiments, the hydrogenation is performed based on the judgment data set, specifically:

[0027] When E is less than or equal to 100%, hydrogenation is performed; when E is greater than 100%, hydrogenation is not performed.

[0028] In some embodiments, the pressure of the target hydrogen tank cavity after hydrogenation is compared, specifically:

[0029] The pressure of the target hydrogen tank cavity after hydrogenation is completed is compared with the standard pressure value. When the difference range of the comparison result meets the preset allowable range of the pressure difference, the comparison is completed.

[0030] In some embodiments, the hydrogenation start-stop control is performed based on the comparison result, specifically:

[0031] When the difference range of the comparison result meets the preset allowable range of the pressure difference, hydrogenation is stopped; when the difference range of the comparison result does not meet the preset allowable range of the pressure difference, hydrogenation is started.

[0032] According to another aspect of the present application, a vehicle hydrogen refueling detection control system is provided, the system being controlled by a processor and comprising:

[0033] An acquisition module, the acquisition module is used to acquire a pressure value of a target hydrogen tank cavity of a target vehicle to obtain a pressure data set;

[0034] An analysis module, the analysis module is used to perform a difference analysis on the pressure data set, and the analysis result set is a difference data set;

[0035] A judgment module, the judgment module is used to perform judgment on the difference data set based on the threshold model to obtain a judgment data set;

[0036] An execution module, the execution module is used to execute hydrogenation based on the judgment data set;

[0037] A comparison module, the comparison module is used to compare the pressure of the target hydrogen tank cavity after hydrogenation;

[0038] A control module is used to execute hydrogenation start and stop control based on the comparison result.

[0039] Compared with the prior art, the present application has the following advantages and beneficial effects: the method of the present application realizes rapid and timely hydrogen refueling detection and control of the vehicle through the coordination of a threshold model and a difference data set; at the same time, since the present application compares the pressure of the target hydrogen tank cavity after hydrogenation, real-time control of the hydrogenation process can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 is a flow chart of the detection control method of the present application;

[0042] Figure 2 It is a structural diagram of the detection and control system of this application. DETAILED DESCRIPTION

[0043] The following will be combined with the attached examples of the present application Figure 1-2 The technical solutions in the embodiments of the present application are clearly and completely described together. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0044] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0045] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0046] Application Overview

[0047] During the use of hydrogen fuel cell vehicles, if the hydrogen storage capacity drops below the required value, it is necessary to go to a hydrogen refueling station for hydrogenation. At present, when the hydrogenation equipment controller and the vehicle controller in the hydrogenation station cannot communicate, a blind refueling method is used. This hydrogenation method may cause the equipment to be damaged, reduce the safety of hydrogenation, and fail to achieve fast and effective hydrogenation operations. Based on the above, the method of the present application realizes reasonable control of the hydrogenation detection control of the target vehicle through a threshold model, and realizes the rapid connection between the hydrogenation equipment and the vehicle's hydrogen tank cavity.

[0048] Exemplary Methods

[0049] A vehicle hydrogen refueling detection control method is performed by a processor. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0050] The methods specifically include:

[0051] The pressure value of the target hydrogen tank cavity of the target vehicle is obtained to obtain a pressure data set; a difference analysis is performed on the pressure data set, and the analysis result set is a difference data set; based on the threshold model, a judgment is performed on the difference data set to obtain a judgment data set; based on the judgment data set, hydrogenation is performed; a comparison is performed on the pressure of the target hydrogen tank cavity after hydrogenation; based on the comparison result, hydrogenation start-stop control is performed. The method of the present application can realize a fast and efficient hydrogenation detection operation for a vehicle.

[0052] Below, each step is described in detail:

[0053] In some embodiments, the pressure value of the target hydrogen tank cavity of the target vehicle is obtained to obtain a pressure data set, specifically: obtaining the latest pressure value of the target hydrogen tank cavity before hydrogenation; performing data cleaning on the pressure value to obtain an accurate pressure value. It should be noted that data cleaning at least includes numerical information classification and numerical format unification.

[0054] In some embodiments, a difference analysis is performed on the pressure data set, and the analysis result is a difference data set, specifically: a difference comparison is performed on the accurate pressure value based on the standard pressure value; and data clustering is performed on the comparison result to obtain a difference data set. It can be understood that the data clustering performed on the comparison result at least includes classifying data with different difference ranges to obtain at least data categories with small difference, moderate difference, and large difference.

[0055] In some embodiments, based on a threshold model, a judgment is performed on a difference data set to obtain a judgment data set, specifically: data with small differences, moderate differences, and large differences in the difference data set are configured to a threshold model to perform a judgment; and the judgment results are clustered to at least be divided into qualified data and unqualified data.

[0056] In some embodiments, the qualified data is input into a threshold model and a threshold analysis is performed, wherein the threshold model is:

[0057]

[0058] Where, E is the qualified rate; E1 is the qualified data pressure value; E 绝 is the absolute pressure value; |Ε1-Ε 绝 | is the difference between the qualified data pressure value and the absolute pressure value. For example, when E1 is 70Mpa, E 绝 When the pressure is 80Mpa, E is 12.5%. At this time, since E is less than 100%, it means that the relevant requirements are met and the next operation can be continued. It can be understood that based on the judgment data set, hydrogenation is performed, specifically: when E is less than or equal to 100%, hydrogenation is performed; when E is greater than 100%, hydrogenation is not performed.

[0059] In some embodiments, the pressure of the target hydrogen tank cavity after hydrogenation is compared, specifically: the pressure of the target hydrogen tank cavity after hydrogenation is compared with the standard pressure value, and the comparison is completed when the difference range of the comparison result meets the preset allowable range of the pressure difference. It should be noted that the standard pressure value is a pressure value preset according to the target, and it is not a uniformly determined value.

[0060] In some embodiments, hydrogenation start and stop control is performed based on the comparison results, specifically: when the comparison result difference range meets the preset allowable range of pressure difference, hydrogenation is stopped; when the comparison result difference range does not meet the preset allowable range of pressure difference, hydrogenation is started.

[0061] In order to better understand the present application, the present application also provides a system. Exemplarily, the above method can be understood as a series of computer programs, a series of computer programs are divided into one or more modules, one or more modules are stored in the memory, and executed by the processor to complete the present application. For example, the computer program can be divided into an acquisition module, an analysis module, a judgment module, an execution module, a comparison module and a control module, and the specific functions of each module are as follows: the acquisition module is used to obtain the pressure value of the target hydrogen tank cavity of the target vehicle to obtain a pressure data set; the analysis module is used to perform difference analysis on the pressure data set, and the analysis result set is a difference data set; the judgment module is used to perform judgment on the difference data set based on the threshold model to obtain a judgment data set; the execution module is used to perform hydrogenation based on the judgment data set; the comparison module is used to perform comparison on the pressure of the target hydrogen tank cavity after hydrogenation; the control module is used to perform hydrogenation start-stop control based on the comparison result.

[0062] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0063] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A vehicle hydrogen refueling detection control method, the method is executed by a processor, characterized in that: include: Obtaining a pressure value of a target hydrogen tank cavity of a target vehicle to obtain a pressure data set; Performing difference analysis on the pressure data set, and the analysis result set is a difference data set; Based on the threshold model, a judgment is performed on the difference data set to obtain a judgment data set; Based on the judgment data set, hydrogenation is performed; Comparing the pressure of the target hydrogen tank cavity after hydrogenation; Based on the comparison results, hydrogenation start-stop control is performed.

2. The method according to claim 1, characterized in that: The pressure value of the target hydrogen tank cavity of the target vehicle is obtained to obtain a pressure data set, specifically: Obtain the latest pressure value in the target hydrogen tank cavity before hydrogenation; Perform data cleaning on the pressure values ​​to obtain accurate pressure values.

3. The method according to claim 1, characterized in that The difference analysis is performed on the pressure data set, and the analysis result set is a difference data set, specifically: Perform differential comparison on the accurate pressure value based on the standard pressure value; The comparison results are clustered to obtain a difference data set.

4. The method according to claim 1, characterized in that Based on the threshold model, the difference data set is judged to obtain the judgment data set, which is specifically: The data in the difference data set are configured in the threshold model to perform judgment; Clustering is performed on the judgment results to at least divide them into qualified data and unqualified data.

5. The method according to claim 4, characterized in that The threshold model is: Where, E is the qualified rate; E1 is the qualified data pressure value; E 绝 is the absolute pressure value; |Ε1-Ε 绝 | is the difference between the qualified data pressure value and the absolute pressure value.

6. The method according to claim 5, characterized in that The hydrogenation is performed based on the judgment data set, specifically: When E is less than or equal to 100%, hydrogenation is performed; when E is greater than 100%, hydrogenation is not performed.

7. The method according to claim 1, characterized in that The pressure comparison of the target hydrogen tank cavity after hydrogenation is specifically performed as follows: The pressure of the target hydrogen tank cavity after hydrogenation is completed is compared with the standard pressure value. When the difference range of the comparison result meets the preset allowable range of the pressure difference, the comparison is completed.

8. The method according to claim 7, characterized in that The hydrogenation start-stop control is performed based on the comparison result, specifically: When the difference range of the comparison result meets the preset allowable range of the pressure difference, hydrogenation is stopped; when the difference range of the comparison result does not meet the preset allowable range of the pressure difference, hydrogenation is started.

9. A vehicle hydrogen refueling detection and control system, the system is controlled by a processor, characterized in that: include: An acquisition module, the acquisition module is used to acquire a pressure value of a target hydrogen tank cavity of a target vehicle to obtain a pressure data set; An analysis module, the analysis module is used to perform a difference analysis on the pressure data set, and the analysis result set is a difference data set; A judgment module, the judgment module is used to perform judgment on the difference data set based on the threshold model to obtain a judgment data set; An execution module, the execution module is used to execute hydrogenation based on the judgment data set; A comparison module, the comparison module is used to compare the pressure of the target hydrogen tank cavity after hydrogenation; A control module is used to execute hydrogenation start and stop control based on the comparison result.

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