A Charging Pile Safety Protection Method, Device, Equipment and Storage Medium

Abstract

The present application provides a charging pile safety protection method, device, equipment and storage medium, relating to the technical field of charging piles. The method includes: obtaining the temperature change curve, current change curve and voltage change curve of the charging pile within a preset time period; calculating an initial stability index of the charging pile according to the temperature change curve, the current change curve and the voltage change curve; obtaining environmental data of the location where the charging pile is located, and adjusting the initial stability index according to the environmental data to generate a target stability index; when the target stability index is lower than a threshold value, an alarm message is generated and charging is stopped. The technical effect of the present application is: accurately evaluating the operating state of the charging pile, and timely discovering and handling potential safety hazards.

Description

Technical Field

[0001] This application relates to the technical field of charging piles, and particularly to a charging pile safety protection method, device, equipment and storage medium. Background Art

[0002] With the popularization of electric vehicles, charging piles, as one of the core infrastructure, have received increasing attention. However, charging piles will face various safety hazards during use, which may lead to charging pile failures and even safety accidents such as fires. Therefore, how to effectively monitor and protect the safety of charging piles has become an urgent technical problem to be solved.

[0003] In the prior art, by monitoring parameters such as the temperature, current and voltage of the charging pile and setting fixed thresholds, when a certain parameter exceeds the threshold, an alarm is automatically triggered and charging is stopped, which improves the safety of the charging pile to a certain extent. However, these solutions usually ignore the influence of environmental factors on the working state of the charging pile, and the evaluation of the operating state of the charging pile is not accurate enough, resulting in the inability to detect and handle potential safety hazards in time. Summary of the Invention

[0004] This application provides a charging pile safety protection method, device, equipment and storage medium for accurately evaluating the operating state of the charging pile and timely discovering and handling potential safety hazards.

[0005] In a first aspect, this application provides a charging pile safety protection method, the method includes: obtaining the temperature change curve, current change curve and voltage change curve of the charging pile within a preset time period; calculating an initial stability index of the charging pile according to the temperature change curve, the current change curve and the voltage change curve; obtaining environmental data of the location where the charging pile is located, and adjusting the initial stability index according to the environmental data to generate a target stability index; when the target stability index is lower than a threshold, an alarm message is generated and charging is stopped.

[0006] By adopting the above technical solution, the operating parameters of the charging pile are monitored by collecting the temperature change curve, current change curve, and voltage change curve of the charging pile within a preset time period. Monitoring the change curves of these three key parameters can comprehensively reflect the working condition of the charging pile. According to the three collected change curves, the initial stability index of the charging pile can be calculated. This initial stability index comprehensively considers the influences of temperature, current, and voltage and can evaluate the stability degree of the charging pile. However, the environmental temperature and humidity also affect the operation of the charging pile, so it is necessary to adjust the initial stability index by combining the data of the environment where the charging pile is located to generate a target stability index that can accurately reflect the current situation. Subsequently, the target stability index is compared with a preset safety threshold. When the target stability index is lower than the threshold, it indicates that the charging pile is in an abnormal state and there is a risk of an accident. At this time, it is necessary to generate an alarm message in a timely manner and stop charging simultaneously to avoid the occurrence of an accident. By implementing the above steps, the operating state of the charging pile can be accurately evaluated in real time, and potential safety hazards can be discovered and processed in a timely manner.

[0007] Optionally, calculating the initial stability index of the charging pile according to the temperature change curve, the current change curve, and the voltage change curve includes: obtaining the temperature peak value in the temperature change curve, determining whether the temperature peak value is greater than the temperature threshold, if the temperature peak value is greater than the temperature threshold, calculating a first difference value between the temperature peak value and the temperature threshold, and determining a first danger index according to the first difference value; obtaining the current fluctuation amplitude in the current change curve, determining whether the current fluctuation amplitude is greater than a preset current fluctuation amplitude, if the current fluctuation amplitude is greater than the preset current fluctuation amplitude, calculating a second difference value between the current fluctuation amplitude and the preset current fluctuation amplitude, and determining a second danger index according to the second difference value; obtaining the voltage fluctuation amplitude in the voltage change curve, determining whether the voltage fluctuation amplitude is greater than a preset voltage fluctuation amplitude, if the voltage fluctuation amplitude is greater than the preset voltage fluctuation amplitude, calculating a third difference value between the voltage fluctuation amplitude and the preset voltage fluctuation amplitude, and determining a third danger index according to the third difference value; combining the first danger index, the second danger index, and the third danger index to calculate the initial stability index of the charging pile.

[0008] By adopting the above technical solutions, the temperature peak value is extracted from the temperature change curve, and it is judged whether the peak value exceeds the temperature threshold. If it exceeds, the difference between the peak value and the threshold value is calculated as the first danger index. Secondly, the fluctuation amplitude of the current change curve is analyzed to judge whether it is greater than the preset current fluctuation amplitude. If it is greater, the difference between the two is calculated as the second danger index. Furthermore, similarly, the voltage change curve is analyzed, the voltage fluctuation amplitude is extracted, and the difference from the preset voltage fluctuation amplitude is calculated as the third danger index. The above three danger indexes respectively reflect the stability degree of the charging pile from three dimensions of temperature, current, and voltage. Finally, the three danger indexes need to be comprehensively calculated to obtain the initial stability index that can comprehensively evaluate the initial stable state of the charging pile. In this way, not only can the specific situation of each parameter be analyzed, but also the comprehensive effect of the three can be combined to evaluate the initial stable state of the charging pile, providing a basis for generating the target stable index subsequently. By extracting and calculating the key parameters in detail, it is beneficial to accurately judge the stability degree of the charging pile.

[0009] Optionally, combining the first danger coefficient, the second danger coefficient, and the third danger coefficient to calculate the initial stability index of the charging pile includes: substituting the first danger coefficient, the second danger coefficient, and the third danger coefficient into a preset formula to calculate the initial stability index of the charging pile; where

[0010] The preset formula is:

[0011]

[0012] In the formula, S0 is the initial stability index, R1 is the first danger coefficient, R2 is the second danger coefficient, R3 is the third danger coefficient, a1, a2, and a3 are all non-linear term coefficients, b1 and b2 are all cross-term coefficients, and c1 and c2 are all additional interaction term coefficients.

[0013] By adopting the above technical solutions, fully considering the influence of each danger index on the initial stable state of the charging pile, a preset formula for comprehensive calculation needs to be established. This formula includes the first danger index, the second danger index, and the third danger index as independent variables to participate in the calculation. The formula consists of linear terms, non-linear terms, cross terms, and interaction terms, which can comprehensively reflect the comprehensive effect of each index. Substituting the extracted first danger index, second danger index, and third danger index directly into the formula and calculating according to each coefficient, the initial stability index of the charging pile can be obtained. Here, each coefficient is a pre-determined constant, used to represent the weight of each index in the calculation. This calculation method based on the preset formula can avoid the deviation caused by simple linear superposition. The formula considers the non-linear relationship and interaction between multiple danger indexes, making the final initial stability index more accurately and comprehensively reflect the stable state of the charging pile.

[0014] Optionally, the environmental data includes temperature and humidity. Adjusting the initial stability index according to the environmental data to generate a target stability index includes: determining whether the temperature is greater than a preset temperature threshold. If the temperature is greater than the preset temperature threshold, calculating the temperature difference between the temperature and the preset temperature threshold; determining whether the humidity is less than a preset humidity threshold. If the humidity is greater than the preset humidity threshold, calculating the humidity difference between the humidity and the preset humidity threshold; combining the temperature difference and the humidity difference to determine an adjustment index; adjusting the initial stability index by the adjustment index to generate a stability index to be adjusted.

[0015] By adopting the above technical solution, by considering the temperature and humidity data of the environment where the charging pile is located, the evaluation of the stability index can be made closer to the actual situation. Temperature and humidity are important external factors affecting the operation of the charging pile. In the solution, it is determined whether the temperature and humidity exceed the preset thresholds, and the differences between them and the thresholds are calculated. This can accurately describe the influence degree of temperature and humidity on the charging pile. Then, the temperature and humidity differences are converted into an adjustment index, which is applied to the adjustment of the initial stability index to generate a target stability index that truly reflects the current environmental impact. This method of adjusting in combination with environmental data enables the stability index to dynamically correspond to different working environments, and the evaluation result is more accurate. The introduction of environmental data enriches the dimension of stability evaluation and is a beneficial supplement to the calculation method based on the parameters of the charging pile itself. Through the adjustment of environmental data, accurate calculation of the stability index can be achieved, effectively preventing the risk of accidents of the charging pile in a harsh environment and improving the safety of the charging pile.

[0016] Optionally, combining the temperature difference and the humidity difference to determine an adjustment index includes: obtaining the temperature difference range corresponding to the temperature difference and the first index corresponding to the temperature difference range; obtaining the humidity difference range corresponding to the humidity difference and the second index corresponding to the humidity difference range; assigning a first weight coefficient to the first index and a second weight coefficient to the second index; arithmetically multiplying the first index by the first weight coefficient to obtain a first adjustment index, and arithmetically multiplying the second index by the second weight coefficient to obtain a second adjustment index; arithmetically adding the first adjustment index and the second adjustment index to obtain an adjustment index.

[0017] By adopting the above technical solution, the scheme realizes the mapping between the temperature and humidity difference and the adjustment index by establishing the corresponding relationship between the temperature difference interval and the first index, and the humidity difference interval and the second index. The larger the temperature and humidity difference, the higher the corresponding index value, which reasonably reflects that the greater the temperature and humidity deviation, the greater the adjustment range of the stability index. Then, weight coefficients are introduced and multiplied by the two indices respectively to reflect the different weights of temperature and humidity in the adjustment index. Finally, the final adjustment index is generated by linearly superimposing the two adjustment indices. This calculation method comprehensively considers the quantization interval of the temperature and humidity difference and fully reflects the weight distribution of the two, and the calculation process is reasonable and direct.

[0018] Optionally, the method further includes: when the target stability index is not lower than the threshold, estimating the continuous working duration of the charging pile; judging whether the continuous working duration exceeds the safe working duration, and if the continuous working duration exceeds the safe working duration, generating a warning message; and adjusting the charging power of the charging pile according to the warning message.

[0019] By adopting the above technical solution, when the charging pile is in a normal working state and the target stability index does not drop below the threshold, the subsequent continuous working duration of the charging pile can be estimated. By judging whether the continuous working duration will exceed the predetermined safe working duration, the prediction of the continuous working stability of the charging pile is realized. When it is predicted that the safe duration will be exceeded, a warning message is generated, and the charging power is actively reduced according to the warning. This warning method can prevent the charging pile from entering a long-term overload state and greatly reduce potential safety hazards.

[0020] Optionally, after generating an alarm message and stopping charging when the target stability index is lower than the threshold, it further includes: obtaining the temperature, current and voltage data of the charging pile after stopping charging; calculating the current stability index of the charging pile according to the temperature, current and voltage data of the charging pile after stopping charging; comparing the current stability index with the target stability index, and if the current stability index is higher than the threshold, generating a resume charging instruction to enable the charging pile to start charging; if the current stability index is lower than the threshold, generating a maintenance notice and sending the maintenance notice to the maintenance personnel so that the maintenance personnel can perform maintenance.

[0021] By adopting the above technical solution, after the charging pile stops charging due to the stability index being lower than the threshold, its operating parameters can be continuously monitored, and the real-time current stability index can be dynamically calculated. By comparing with the target stability index, if the index returns to the normal level, charging will automatically resume. If the index continues to be lower than the threshold, a maintenance notice will be generated and maintenance personnel will be involved for repair. This online status monitoring after charging stops and the intelligent determination method combined with the stability index can be flexibly processed according to the specific situation of the charging pile. On the one hand, it realizes automatic resumption of charging when the status of the charging pile improves, minimizing the downtime to the greatest extent. On the other hand, it can also initiate timely maintenance when the fault cannot be eliminated by itself. This solution integrates real-time status monitoring, intelligent analysis and determination, and corresponding control instructions, realizing intelligent maintenance and management of the charging pile after abnormal charging stop. It greatly improves the system stability and reliability.

[0022] In a second aspect, the present application provides a charging pile safety protection device, and the device includes: an acquisition module, a calculation module, a generation module, and an output module; wherein, the acquisition module is used to acquire the temperature change curve, current change curve, and voltage change curve of the charging pile within a preset time period; the calculation module is used to calculate the initial stability index of the charging pile according to the temperature change curve, current change curve, and voltage change curve; the generation module is used to acquire the environmental data of the location where the charging pile is located, adjust the initial stability index according to the environmental data, and generate a target stability index; the output module is used to generate an alarm message and stop charging when the target stability index is lower than the threshold.

[0023] In a third aspect, the present application provides an electronic device, adopting the following technical solution: including a processor, a memory, a user interface, and a network interface, the memory is used to store instructions, the user interface and the network interface are used to communicate with other devices, and the processor is used to execute the instructions stored in the memory so that the electronic device executes a computer program of any one of the above charging pile safety protection methods.

[0024] In a fourth aspect, the present application provides a computer-readable storage medium, adopting the following technical solution: storing a computer program that can be loaded and executed by a processor for any one of the above charging pile safety protection methods.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By collecting the temperature change curve, current change curve, and voltage change curve of the charging pile within a preset time period, the operating parameters of the charging pile are monitored. Monitoring the change curves of these three key parameters can comprehensively reflect the working conditions of the charging pile;

[0027] 2. Based on the three collected change curves, the initial stability index of the charging pile can be calculated. This initial stability index comprehensively considers the effects of temperature, current, and voltage and can evaluate the stability of the charging pile. However, the ambient temperature and humidity also affect the operation of the charging pile, so it is necessary to adjust the initial stability index by combining the data of the environment where the charging pile is located to generate a target stability index that can accurately reflect the current situation. Subsequently, the target stability index is compared with a preset safety threshold. When the target stability index is lower than the threshold, it indicates that the charging pile is in an abnormal state and there is a risk of an accident. At this time, it is necessary to generate an alarm message in a timely manner and stop charging simultaneously to avoid the occurrence of an accident. By implementing the above steps, the operating state of the charging pile can be accurately evaluated in real time, and potential safety hazards can be discovered and handled in a timely manner. Description of the Drawings

[0028] Figure 1 is a schematic flowchart of a charging pile safety protection method provided by an embodiment of the present application;

[0029] Figure 2 is a schematic structural diagram of a charging pile safety protection device provided by an embodiment of the present application;

[0030] Figure 3 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

[0031] Description of the reference numerals: 1000, electronic device; 1001, processor; 1002, communication bus; 1003, user interface; 1004, network interface; 1005, memory. Detailed Embodiments

[0032] In order to enable those skilled in the art to better understand the technical solutions in this specification, the following will clearly and completely describe the technical solutions in the embodiments of this specification in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0033] In the description of the embodiments of the present application, words such as "exemplary", "for example", or "for instance" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary", "for example", or "for instance" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, the use of words such as "exemplary", "for example", or "for instance" is intended to present relevant concepts in a specific manner.

[0034] Figure 1 is a schematic flowchart of a charging pile safety protection method provided by an embodiment of the present application. It should be understood that although Figure 1The steps in the flowchart are shown in sequence according to the arrows, but these steps are not necessarily executed in the order indicated by the arrows; unless otherwise clearly stated in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders; and Figure 1 At least some of the steps may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least some of the sub-steps or stages of other steps or other steps.

[0035] This application discloses a method for safety protection of a charging pile, as Figure 1 shown, the method includes S101 - S104.

[0036] S101, obtaining the temperature change curve, current change curve and voltage change curve of the charging pile within a preset time period.

[0037] In one example, in order to ensure the safety of the charging pile during use, it is necessary to monitor its working state in real time. The temperature, current and voltage during the charging process are important parameters reflecting the operating conditions of the charging pile. By obtaining the change curves of these parameters within a preset time period, the working state of the charging pile can be comprehensively understood, and accurate data support can be provided for subsequent safety assessment.

[0038] Specifically, when implementing, it is first necessary to install high-precision temperature sensors, current sensors and voltage sensors inside the charging pile, and these sensors collect the temperature, current and voltage data of the charging pile in real time. The preset time period can be set according to the charging cycle and usage environment of the charging pile, generally ranging from a few minutes to dozens of minutes, to ensure that abnormal fluctuations that may occur during the charging process can be captured.

[0039] Within the preset time period, the sensors will record the temperature, current and voltage data of the charging pile at fixed time intervals (such as once per second). These data are transmitted to the central processing unit (CPU) through a data acquisition module, and the CPU processes these discrete data points to generate a temperature change curve, a current change curve and a voltage change curve. Specifically, the temperature change curve records the change trend of temperature over time, the current change curve reflects the fluctuation of current, and the voltage change curve shows the change law of voltage.

[0040] By obtaining and analyzing these change curves, the working state of the charging pile during the charging process can be effectively monitored. For example, the temperature change curve can help identify whether there is an overheating risk in the charging pile; the current change curve can reveal whether there are abnormal fluctuations in the current, thereby judging whether the current transmission of the charging pile is stable; the voltage change curve can show whether the voltage fluctuates within the normal range, helping to determine whether the voltage supply of the charging pile is stable.

[0041] S102. Calculate the initial stability index of the charging pile according to the temperature change curve, the current change curve and the voltage change curve.

[0042] In one example, in order to evaluate the safety and stability of the charging pile during the charging process, it is necessary to deeply analyze the temperature change curve, the current change curve and the voltage change curve obtained in the previous step S101. These curves provide real-time operation data of the charging pile within a specified time. By analyzing this data, the initial stability index of the charging pile can be calculated, so as to judge whether its operation state is safe and stable.

[0043] In the specific implementation process, first analyze the temperature change curve. By analyzing the temperature change curve, obtain the temperature peak value of the charging pile within the preset duration, and judge whether the temperature peak value exceeds the preset temperature threshold. If the temperature peak value exceeds the temperature threshold, calculate the difference between the temperature peak value and the temperature threshold, that is, the first difference, and determine the first danger index according to this difference. The purpose of this step is to reflect whether there is an overheating risk in the charging pile through the temperature change, so as to preliminarily evaluate its thermal stability.

[0044] Next, analyze the current change curve. By analyzing the current change curve, obtain the current fluctuation amplitude, and judge whether the fluctuation amplitude is greater than the preset current fluctuation amplitude. If the current fluctuation amplitude exceeds the preset value, calculate the difference between the current fluctuation amplitude and the preset current fluctuation amplitude, that is, the second difference, and determine the second danger index according to this difference. This step aims to evaluate the current transmission stability of the charging pile through the current fluctuation situation, and prevent potential safety hazards caused by current fluctuations.

[0045] Then, analyze the voltage change curve. By analyzing the voltage change curve, obtain the voltage fluctuation amplitude, and judge whether the fluctuation amplitude is greater than the preset voltage fluctuation amplitude. If the voltage fluctuation amplitude exceeds the preset value, calculate the difference between the voltage fluctuation amplitude and the preset voltage fluctuation amplitude, that is, the third difference, and determine the third danger index according to this difference. The purpose of this step is to evaluate the voltage supply stability of the charging pile through the voltage fluctuation situation, and ensure that it operates within the safe voltage range.

[0046] The specific calculation method of the first difference and the first danger index includes: finding the highest temperature point from the temperature change curve. This can usually be achieved through real-time temperature sensor data. Set a reasonable temperature threshold, assuming that this threshold is the highest temperature at which the charging pile can operate safely. If the temperature peak exceeds this threshold, it indicates that there is a potential overheating risk.

[0047] Calculate the first difference: ΔT = T 峰值 -T 阈值 , the larger the first difference is, the higher the temperature is, and the greater the risk of overheating is. The difference can be mapped to the danger index through a function, the first danger index = K1ΔT, K1 is a proportional coefficient.

[0048] The specific calculation method of the second difference and the second danger index includes: calculating the difference between the maximum and minimum values ​​of the current from the current change curve. Setting a preset current fluctuation amplitude as the current fluctuation range for safe operation of the charging pile. If the actual fluctuation amplitude exceeds this preset value, it means that the current change is abnormal. The current fluctuation amplitude refers to the maximum change range of the current over a period of time. Specifically, this is the difference between the maximum and minimum values ​​of the current in the current change curve.

[0049] Calculate the second difference: ΔI = I 波动 -I 预设 The larger the second difference is, the more violent the current fluctuation is and the worse the stability is. The difference can be mapped to the danger index by a similar method. For example, the second danger index = K2ΔI, where K2 is a proportional coefficient.

[0050] The specific calculation method of the third difference and the third danger index includes: The voltage fluctuation amplitude refers to the maximum change range of the voltage within a period of time. Specifically, this is the difference between the maximum and minimum values ​​of the voltage in the voltage change curve. Calculate the difference between the maximum and minimum values ​​of the voltage from the voltage change curve. Set a preset voltage fluctuation amplitude as the voltage fluctuation range for safe operation of the charging pile. If the actual fluctuation amplitude exceeds this preset value, it means that the voltage change is abnormal. Calculate the third difference: ΔV = V 波动 -V 预设 The larger the third difference is, the more violent the voltage fluctuation is and the worse the stability is. Similarly, the difference can be mapped to the danger index through a function. The second danger index = K3ΔV, K3 is a proportional coefficient.

[0051] After obtaining the first danger index, the second danger index, and the third danger index, a preset formula is used to combine these danger indexes to calculate the initial stability index of the charging pile. The formula is as follows:

[0052]

[0053] In the formula, S0 is the initial stability index, R1 is the first risk coefficient, R2 is the second risk coefficient, R3 is the third risk coefficient, a1, a2, and a3 are all non - linear term coefficients, b1 and b2 are both cross - term coefficients, and c1 and c2 are both additional interaction term coefficients.

[0054] The formula consists of three parts. The first part is where a1R1 2 is used to emphasize the impact of temperature R1 on stability. The change in temperature is crucial for the operating safety of the charging pile. Through the square term, the formula can significantly amplify the impact of temperature changes because drastic temperature fluctuations often lead to equipment failures. After squaring the temperature difference, the impact of temperature changes on stability can be more clearly reflected, causing the initial stability index to decrease rapidly when the temperature changes greatly.

[0055] a2 sin(R2), the sine function is used to process the change in current R2. The current fluctuation has a periodic characteristic, and using the sine function can better reflect this characteristic. The sine function makes the impact of current changes on stability smooth most of the time, and only has a greater impact on the stability index when the current changes drastically. This helps to avoid being overly sensitive to small - amplitude periodic current changes, thus providing a more stable assessment.

[0056] The non - linear characteristic of the impact of voltage changes on the device can be reflected by the square - root function. The square - root function can reduce the impact of extreme voltage changes on the stability index and provide a smooth response. Therefore, this processing method can reflect the actual impact of voltage fluctuations on the safety of the charging pile without overly amplifying the role of extreme values.

[0057] The denominator part is 1 + b1R1R2 + b2R2R3. In actual operation, temperature, current, and voltage are not independent of each other, and there are complex mutual influences among them. By introducing the interaction terms b1R1R2 and b2R2R3, the mutual relationship between these parameters can be more realistically reflected. For example, the combined effect of temperature and current may have a more significant impact on the stability of the device, and the changes in current and voltage may also affect each other's operating states. These interaction terms in the denominator can adjust the value of the numerator, thus providing a more balanced and comprehensive stability assessment. It ensures that the formula can not only capture the changes of each individual parameter but also reflect the complex relationships between these parameters through the interaction terms. In this way, the initial stability index S0 can more comprehensively evaluate the operating state of the charging pile and ensure its safety and stability during the charging process.

[0058] The second part is c1(R1R2), which is used to describe the interaction between the temperature change R1 and the current change R2. By multiplying the temperature change R1 and the current change R2 and then multiplying by the coefficient c1, this term can reflect the impact of the interaction between temperature and current on the initial stability index S0.

[0059] The product of temperature and current: directly reflects their mutual relationship and captures the impact when they act together. Coefficient c1: adjusts the weight of this impact to make the evaluation result more in line with the actual situation.

[0060] By introducing the term c1(R1R2), the formula can more comprehensively and accurately evaluate the stability of the charging pile under the co-variation of temperature and current. This term effectively captures the interaction between temperature and current, thereby improving the evaluation quality of the initial stability index and helping to ensure the safety and stability of the charging pile during the charging process.

[0061] The third part is where

[0062] Through this term, the formula can capture the comprehensive impact of the voltage change R3 on the stability of the charging pile under different temperature R1 conditions. The impact of voltage change on the device varies under different temperature conditions. By introducing the temperature term R1, the formula can more accurately reflect this dependence. Square term R3 2 is used to amplify the impact of voltage change. Especially in the case of high voltage, this amplification effect is more significant, which helps to detect potential risks in a timely manner. By using R1 as the denominator, the formula ensures that the impact of voltage change is appropriately adjusted at low temperatures, while at high temperatures, the impact of voltage change is amplified, reflecting the regulatory effect of temperature on voltage in actual operation.

[0063] Overall, by comprehensively considering the individual changes and their interactions of temperature, current, and voltage, the formula calculates an initial stability index. The settings of various parameters and coefficients are aimed at: accurately reflecting the impact of changes in each parameter on the safety of the charging pile. Capturing the interactions between parameters to avoid misjudgments caused by a single factor. Smoothing the impact of extreme values to provide a more robust stability assessment. Through this complex calculation method, it is possible to more comprehensively and accurately evaluate the operating state of the charging pile during the charging process, thereby ensuring its safety and stability.

[0064] S103: Obtain the environmental data of the location where the charging pile is located, and adjust the initial stability index according to the environmental data to generate a target stability index.

[0065] In one example, environmental data at the location where the charging pile is located is obtained through an environmental monitoring device. This data includes environmental temperature, humidity, etc. These environmental data can reflect the actual working conditions of the charging pile. For example, a high-temperature environment may exacerbate the overheating risk of the device, and a high-humidity environment may cause electrical components to be affected by moisture.

[0066] Next, these environmental data are combined with the initial stability index of the charging pile for analysis. Then, the initial stability index is appropriately adjusted according to the environmental data. For example, when the environmental temperature is high, considering the impact of high temperature on the device, it may be necessary to increase the influence weight of temperature on the initial stability index; when the environmental humidity is high, considering the impact of humidity on the device, it may be necessary to increase the influence weight of humidity on the initial stability index.

[0067] In this way, the generated target stability index can more accurately reflect the operating state of the charging pile under the current environmental conditions. This can help detect potential risks in advance, take preventive measures, and ensure that the charging pile can operate safely and stably under various environmental conditions. At the same time, it can also provide more detailed data support for maintenance personnel, formulate more effective maintenance plans, thereby extending the service life of the device and reducing the failure rate.

[0068] Based on the above embodiments, as an alternative implementation, in S103, the environmental data includes temperature and humidity. Adjusting the initial stability index according to the environmental data to generate the target stability index specifically includes the following steps:

[0069] S30, determine whether the temperature is greater than the preset temperature threshold. If the temperature is greater than the preset temperature threshold, calculate the temperature difference between the temperature and the preset temperature threshold.

[0070] S31, determine whether the humidity is less than the preset humidity threshold. If the humidity is greater than the preset humidity threshold, calculate the humidity difference between the humidity and the preset humidity threshold.

[0071] S32, combine the temperature difference and the humidity difference to determine the adjustment index.

[0072] In one example, first, it is necessary to obtain the environmental temperature and humidity data at the location where the charging pile is located, as well as the temperature and humidity values under ideal working conditions. The temperature difference and the humidity difference are respectively the differences between the current environmental temperature and the ideal temperature, and between the current humidity and the ideal humidity. These differences can reflect the degree to which the environmental conditions deviate from the ideal state, thus becoming key factors for adjusting the operating stability of the charging pile.

[0073] After obtaining the temperature difference and humidity difference, the next step is to combine these differences to determine the adjustment index. The adjustment index is a parameter that comprehensively considers the impacts of temperature and humidity on the charging pile and is used to adjust the initial stability index. For example, when the temperature difference is large, it means that the ambient temperature deviates significantly from the ideal temperature, which may cause the charging pile to overheat. Therefore, the adjustment index needs to be increased to reflect this risk. Similarly, when the humidity difference is large, it means that the ambient humidity deviates significantly from the ideal humidity, which may cause the electrical components to be affected by moisture. Therefore, the adjustment index also needs to be increased.

[0074] Based on the above embodiments, as an optional implementation manner, in S32, combining the temperature difference and humidity difference to determine the adjustment index specifically includes the following steps:

[0075] S320, obtain the temperature difference range corresponding to the temperature difference, and the first index corresponding to the temperature difference range.

[0076] In one example, first, it is necessary to obtain the difference between the current ambient temperature and the ideal operating temperature, that is, the temperature difference. The temperature difference reflects the degree to which the current ambient temperature deviates from the ideal temperature and is an important parameter for evaluating the stability of the charging pile.

[0077] Next, match this temperature difference with the preset temperature difference ranges. These temperature difference ranges are preset according to historical data, and each range represents the impact of different degrees of temperature differences on the charging pile. For example, the following temperature difference ranges can be set: 0°C ≤ temperature difference < 5°C, 5°C ≤ temperature difference < 10°C, 10°C ≤ temperature difference < 15°C, temperature difference ≥ 15°C.

[0078] Each temperature difference range corresponds to a specific first index, which reflects the degree of influence of the temperature difference within this range on the stability of the charging pile. The first index is a weight value used to adjust the initial stability index. For example: the first index corresponding to 0°C ≤ temperature difference < 5°C is 1.0, the first index corresponding to 5°C ≤ temperature difference < 10°C is 1.2, the first index corresponding to 10°C ≤ temperature difference < 15°C is 1.5,

[0079] The first index corresponding to temperature difference ≥ 15°C is 2.0.

[0080] Once the range corresponding to the current temperature difference is determined, the first index corresponding to this range can be obtained. For example, if the current temperature difference is 8°C, then it falls into the range of 5°C ≤ temperature difference < 10°C, and the corresponding first index is 1.2. Combine this first index with the initial stability index to generate an adjusted stability index. This adjusted stability index can more accurately reflect the impact of the ambient temperature on the stability of the charging pile, thus providing more reliable basic data in subsequent steps.

[0081] S321. Obtain the humidity difference interval corresponding to the humidity difference and the second index corresponding to the humidity difference interval.

[0082] In one example, it is necessary to obtain the difference between the current ambient humidity and the ideal working humidity, that is, the humidity difference. The humidity difference reflects the degree to which the current ambient humidity deviates from the ideal humidity and is one of the important parameters for evaluating the stability of the charging pile.

[0083] Next, match this humidity difference with the preset humidity difference intervals. These humidity difference intervals are preset based on historical data and expert experience, and each interval represents the impact of different degrees of humidity difference on the charging pile. For example, the following humidity difference intervals can be set: 0% ≤ humidity difference < 10%, 10% ≤ humidity difference < 20%, 20% ≤ humidity difference < 30%, humidity difference ≥ 30%.

[0084] Each humidity difference interval corresponds to a specific second index, which reflects the degree of influence of the humidity difference within this interval on the stability of the charging pile. The second index is a weight value used to adjust the initial stability index. For example: the second index corresponding to 0% ≤ humidity difference < 10% is 1.0, the second index corresponding to 10% ≤ humidity difference < 20% is 1.2, the second index corresponding to 20% ≤ humidity difference < 30% is 1.5, and the second index corresponding to humidity difference ≥ 30% is 2.0.

[0085] Once the interval corresponding to the current humidity difference is determined, the second index corresponding to this interval can be obtained. For example, if the current humidity difference is 15%, then it falls into the interval of 10% ≤ humidity difference < 20%, and the corresponding second index is 1.2. Combine this second index with the initial stability index to generate an adjusted stability index. This adjusted stability index can more accurately reflect the impact of environmental humidity on the stability of the charging pile, thereby providing more reliable basic data in subsequent steps. In this way, obtaining the humidity difference interval corresponding to the humidity difference and its corresponding second index can more accurately evaluate the impact of environmental humidity on the operating stability of the charging pile, ensuring that the calculation of the adjustment index is more accurate and reasonable. Finally, the generated target stability index will more comprehensively reflect the actual operating state of the charging pile in the current environment, ensuring its operating safety and reliability.

[0086] S322. Assign the first index as the first weight coefficient and assign the second index as the second weight coefficient.

[0087] In one example, by analyzing the historical data of the charging pile's operating conditions under different temperature and humidity conditions, the influence degrees of different temperature differences and humidity differences on the stability of the charging pile are determined. These data can help set reasonable temperature difference intervals and humidity difference intervals, and determine the corresponding indices. First, through the previous steps, the temperature difference interval corresponding to the temperature difference has been obtained, and the first index has been determined from it. For example, if the temperature difference is 8°C, the corresponding temperature difference interval is 5°C ≤ temperature difference < 10°C, and the corresponding first index is 1.2. Similarly, by obtaining the humidity difference interval corresponding to the humidity difference, the second index has been determined. For example, if the humidity difference is 15%, the corresponding humidity difference interval is 10% ≤ humidity difference < 20%, and the corresponding second index is 1.2.

[0088] Next, the first index is assigned as the first weight coefficient, and the second index is assigned as the second weight coefficient. The specific operation is to directly use these index values as weight coefficients in the calculation. For example, the first index 1.2 is assigned as the first weight coefficient, and the second index 1.2 is assigned as the second weight coefficient.

[0089] S323, arithmetically multiply the first index by the first weight coefficient to obtain the first adjustment index, and arithmetically multiply the second index by the second weight coefficient to obtain the second adjustment index.

[0090] S324, arithmetically add the first adjustment index and the second adjustment index to obtain the adjustment index.

[0091] S33, adjust the initial stability index through the adjustment index to generate the to-be-adjusted stability index.

[0092] In one example, after obtaining the adjustment index, arithmetically multiply the adjustment index and the initial stability index to obtain the adjusted stability index.

[0093] S104, when the target stability index is lower than the threshold, an alarm message is generated and charging is stopped.

[0094] In one example, when it is detected that the target stability index is lower than the set safety threshold, the system will immediately generate an alarm message. These alarm messages can include the current target stability index value, environmental data, timestamp, and relevant warning messages. The alarm messages will be sent to the relevant operation and maintenance personnel and users through various channels to ensure that they can timely understand the operating status of the charging pile.

[0095] Meanwhile, the system will automatically stop the charging operation. This is to prevent continued charging in an unsafe state, which may cause equipment damage or user safety accidents. The operation of stopping charging will send a control instruction to the charging pile to immediately cut off the charging current and ensure the safety of the charging pile and the vehicle.

[0096] In this way, step S104 can promptly detect and respond to potential safety issues during the operation of the charging pile, preventing equipment damage and user safety accidents. Generating an alarm message and stopping the charging can not only protect the charging pile and the vehicle, but also remind the operation and maintenance personnel to conduct inspections and maintenance in a timely manner to ensure that the charging pile can be restored to a safe state as soon as possible.

[0097] Based on the above embodiments, as an optional implementation manner, the method further includes: when the target stability index is not lower than the threshold, estimating the continuous working duration of the charging pile; determining whether the continuous working duration exceeds the safe working duration, and if the continuous working duration exceeds the safe working duration, generating a warning message; and adjusting the charging power of the charging pile according to the warning message.

[0098] In an example, during the operation of the charging pile, ensuring its stability and safety is crucial. When the target stability index is not lower than the set threshold, it is necessary to estimate the continuous working duration of the charging pile and determine whether it exceeds the safe working duration. If the continuous working duration exceeds the safe working duration, a warning message needs to be generated and the charging power of the charging pile needs to be adjusted according to the warning message. This process aims to prevent potential safety risks and ensure that the charging pile operates within a safe range.

[0099] When the target stability index reaches or exceeds the preset threshold, first, it is necessary to estimate the continuous working duration of the charging pile under the current environmental conditions. The estimation method can calculate a reasonable continuous working duration based on historical data, the current operating state, and the environment.

[0100] Subsequently, compare the estimated continuous working duration with the safe working duration. The safe working duration is a safe duration value determined according to the design specifications of the charging pile, the manufacturer's recommendations, and relevant standards. If the estimated continuous working duration exceeds the safe working duration, it indicates that there are potential safety risks in the current operating conditions of the charging pile, and immediate measures need to be taken.

[0101] When the estimated continuous working duration exceeds the safe working duration, the system will generate a warning message. The warning message includes the current target stability index, the estimated continuous working duration, the safe working duration, and the recommended operation measures, etc. These information will help the operator or the automatic control system understand the current risk status and take corresponding measures.

[0102] According to the generated warning message, the system will automatically adjust the charging power of the charging pile to reduce the load and extend the safe working duration of the equipment. The method of adjusting the charging power may include gradually reducing the charging current and decreasing the charging power, etc. By reducing the load, the working intensity of the charging pile can be effectively reduced to ensure that it continues to operate within a safe range, thereby avoiding safety accidents caused by overheating and overloading.

[0103] When the target stability index is lower than the threshold, after generating an alarm message and stopping charging, it further includes: obtaining the temperature, current, and voltage data of the charging pile after stopping charging; calculating the current stability index of the charging pile based on the temperature, current, and voltage data of the charging pile after stopping charging; comparing the current stability index with the target stability index. If the current stability index is higher than the threshold, a resume charging instruction is generated to enable the charging pile to start charging; if the current stability index is lower than the threshold, a maintenance notice is generated and sent to the maintenance personnel so that the maintenance personnel can perform maintenance.

[0104] In an example, when the target stability index is lower than the threshold, the system first generates an alarm message and stops charging. At this time, the purpose of immediately stopping charging is to prevent safety accidents caused by overheating or unstable current, etc. After stopping charging, the system will obtain the temperature, current, and voltage data of the charging pile. These data reflect the state of the charging pile after stopping charging and can be used to evaluate its current stability.

[0105] Based on the obtained temperature, current, and voltage data, the system calculates the current stability index of the charging pile. This calculation process may involve complex algorithms and models to accurately reflect the actual operating state of the charging pile. The calculated current stability index will be compared with the target stability index. If the current stability index is higher than the set threshold, it indicates that the charging pile has returned to a safe operating state, and the system will generate a resume charging instruction to make the charging pile start charging again. The generation and execution of the resume charging instruction can ensure that the charging pile resumes work as soon as it meets the safety standards, avoid unnecessary downtime, and improve the operating efficiency.

[0106] If the current stability index is still lower than the threshold, this means that the state of the charging pile has not returned to a safe level, and the system will generate a maintenance notice. The maintenance notice will contain detailed status information and possible fault reasons and will be sent to the maintenance personnel. The maintenance personnel will conduct inspections and repairs based on the notice content to ensure that the charging pile reaches a safe and stable state before resuming charging. In this way, it can effectively prevent the charging pile from operating in an unsafe state and ensure its long-term reliability and safety.

[0107] Through the above steps, the system can quickly respond and take corresponding measures when the target stability index is lower than the threshold to ensure the safe operation of the charging pile. Obtaining the data after stopping charging and calculating the current stability index can accurately evaluate the state of the charging pile and decide whether to resume charging or perform maintenance. Generating an alarm message, stopping charging, calculating the stability index, generating a resume charging instruction or a maintenance notice, the close connection and orderly execution of these links ensure that the charging pile operates within a safe range, guarantee the safety of users, and improve the operating efficiency and reliability of the equipment.

[0108] Based on the above method, the present application also discloses a charging pile safety protection device, as Figure 2 shown Figure 2 is a schematic structural diagram of a charging pile safety protection device provided by an embodiment of the present application.

[0109] A charging pile safety protection device includes: an acquisition module, a calculation module, a generation module, and an output module; wherein, the acquisition module is used to acquire the temperature change curve, current change curve, and voltage change curve of the charging pile within a preset time period; the calculation module is used to calculate the initial stability index of the charging pile according to the temperature change curve, current change curve, and voltage change curve; the generation module is used to acquire the environmental data of the location where the charging pile is located, adjust the initial stability index according to the environmental data, and generate a target stability index; the output module is used to generate an alarm message and stop charging when the target stability index is lower than a threshold value.

[0110] In one example, the calculation module is further used to acquire the temperature peak value in the temperature change curve, determine whether the temperature peak value is greater than the temperature threshold value, if the temperature peak value is greater than the temperature threshold value, then calculate the first difference between the temperature peak value and the temperature threshold value, and determine the first danger index according to the first difference; acquire the current fluctuation amplitude in the current change curve, determine whether the current fluctuation amplitude is greater than the preset current fluctuation amplitude, if the current fluctuation amplitude is greater than the preset current fluctuation amplitude, then calculate the second difference between the current fluctuation amplitude and the preset current fluctuation amplitude, and determine the second danger index according to the second difference; acquire the voltage fluctuation amplitude in the voltage change curve, determine whether the voltage fluctuation amplitude is greater than the preset voltage fluctuation amplitude, if the voltage fluctuation amplitude is greater than the preset voltage fluctuation amplitude, then calculate the third difference between the voltage fluctuation amplitude and the preset voltage fluctuation amplitude, and determine the third danger index according to the third difference; combine the first danger index, the second danger index, and the third danger index to calculate the initial stability index of the charging pile.

[0111] In one example, the calculation module is further used to substitute the first danger coefficient, the second danger coefficient, and the third danger coefficient into a preset formula to calculate the initial stability index of the charging pile; wherein,

[0112] The preset formula is:

[0113]

[0114] In the formula, S0 is the initial stability index, R1 is the first danger coefficient, R2 is the second danger coefficient, R3 is the third danger coefficient, a1, a2, and a3 are all non-linear term coefficients, b1 and b2 are all cross-term coefficients, and c1 and c2 are all additional interaction term coefficients.

[0115] In one example, the generating module is further configured to determine whether the temperature is greater than a preset temperature threshold. If the temperature is greater than the preset temperature threshold, calculate the temperature difference between the temperature and the preset temperature threshold; determine whether the humidity is less than a preset humidity threshold. If the humidity is greater than the preset humidity threshold, calculate the humidity difference between the humidity and the preset humidity threshold; combine the temperature difference and the humidity difference to determine an adjustment index; adjust the initial stability index according to the adjustment index to generate a stability index to be adjusted. In one example, the generating module is further configured to obtain a temperature difference range corresponding to the temperature difference, and a first index corresponding to the temperature difference range; obtain a humidity difference range corresponding to the humidity difference, and a second index corresponding to the humidity difference range; assign the first index as a first weight coefficient and assign the second index as a second weight coefficient; arithmetically multiply the first index by the first weight coefficient to obtain a first adjustment index, and arithmetically multiply the second index by the second weight coefficient to obtain a second adjustment index; arithmetically add the first adjustment index and the second adjustment index to obtain an adjustment index.

[0116] In one example, the above device is further configured to estimate the continuous working duration of the charging pile when the target stability index is not lower than a threshold; determine whether the continuous working duration exceeds a safe working duration. If the continuous working duration exceeds the safe working duration, generate a warning message; adjust the charging power of the charging pile according to the warning message.

[0117] In one example, the above device is further configured to obtain the temperature, current and voltage data of the charging pile after charging stops; calculate the current stability index of the charging pile according to the temperature, current and voltage data of the charging pile after charging stops; compare the current stability index with the target stability index. If the current stability index is higher than the threshold, generate a resume charging instruction to enable the charging pile to start charging; if the current stability index is lower than the threshold, generate a maintenance notice and send the maintenance notice to the maintenance personnel so that the maintenance personnel can perform maintenance.

[0118] It should be noted that when the device provided in the above embodiments implements its functions, only the above-mentioned division of each functional module is used for illustration. In actual application, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0119] Please refer to Figure 3 , which is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As Figure 3 shown, the electronic device 1000 may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, a memory 1005, and at least one communication bus 1002.

[0120] Among them, the communication bus 1002 is used to realize the connection and communication between these components.

[0121] Among them, the user interface 1003 may include a display screen (Display) and a camera (Camera). Optionally, the user interface 1003 may further include a standard wired interface and a wireless interface.

[0122] Among them, the network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface).

[0123] Among them, the processor 1001 may include one or more processing cores. The processor 1001 uses various interfaces and lines to connect various parts within the entire server. By running or executing instructions, programs, code sets, or instruction sets stored in the memory 1005, and by calling data stored in the memory 1005, it executes various functions of the server and processes data. Optionally, the processor 1001 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), or programmable logic array (PLA). The processor 1001 may integrate one or a combination of several of a central processing unit (CPU), a graphics processing unit (GPU), and a modem, etc. Among them, the CPU mainly processes the operating system, user interface, and application programs, etc.; the GPU is responsible for the rendering and drawing of the content to be displayed on the display screen; the modem is used to process wireless communication. It can be understood that the above modem may not be integrated into the processor 1001 and may be implemented separately by a single chip.

[0124] Among them, the memory 1005 may include a Random Access Memory (RAM), or may also include a Read-Only Memory. Optionally, the memory 1005 includes a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, codes, code sets or instruction sets. The memory 1005 may include a program storage area and a data storage area. Among them, the program storage area may store instructions for implementing the operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-mentioned method embodiments, etc.; the data storage area may store the data involved in the above-mentioned method embodiments. Optionally, the memory 1005 may also be at least one storage device located far from the aforementioned processor 1001. As Figure 3 shown, in the memory 1005 as a computer storage medium, an operating system, a network communication module, a user interface module, and an application program of a charging pile safety protection method may be included.

[0125] In Figure 3 the electronic device 1000 shown, the user interface 1003 is mainly used to provide an input interface for the user to obtain user input data; and the processor 1001 can be used to call an application program of a charging pile safety protection method stored in the memory 1005. When executed by one or more processors, the electronic device is caused to execute one or more of the methods described in the above embodiments.

[0126] An electronic device-readable storage medium stores instructions. When executed by one or more processors, the electronic device is caused to execute one or more of the methods described in the above embodiments.

[0127] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by this application.

[0128] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0129] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling, direct coupling, or communication connection to each other can be through some service interfaces. The indirect coupling or communication connection of the device or unit can be in electrical or other forms.

[0130] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0131] In addition, in each embodiment of the present application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

[0132] If the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. And the aforementioned memory includes: various media such as USB flash drives, mobile hard disks, magnetic disks, or optical discs that can store program codes.

[0133] The foregoing are only exemplary embodiments of the present disclosure and should not be used to limit the scope of the present disclosure. That is, all equivalent changes and modifications made in accordance with the teachings of the present disclosure still fall within the scope covered by the present disclosure. Those skilled in the art will readily think of other embodiments of the present disclosure after considering the specification and practicing the present disclosure. The present application aims to cover any variations, uses, or adaptive changes of the present disclosure, and these variations, uses, or adaptive changes follow the general principles of the present disclosure and include common general knowledge or conventional technical means in the technical field not recorded in the present disclosure. The specification and embodiments are only regarded as exemplary, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A method for safety protection of a charging pile, characterized in that, The method includes: Obtaining the temperature change curve, current change curve, and voltage change curve of the charging pile within a preset time period; Calculating the initial stability index of the charging pile according to the temperature change curve, the current change curve, and the voltage change curve; The calculating the initial stability index of the charging pile according to the temperature change curve, the current change curve, and the voltage change curve includes: obtaining the temperature peak value in the temperature change curve, determining whether the temperature peak value is greater than the temperature threshold, if the temperature peak value is greater than the temperature threshold, calculating a first difference between the temperature peak value and the temperature threshold, and determining a first danger index according to the first difference; obtaining the current fluctuation amplitude in the current change curve, determining whether the current fluctuation amplitude is greater than the preset current fluctuation amplitude, if the current fluctuation amplitude is greater than the preset current fluctuation amplitude, calculating a second difference between the current fluctuation amplitude and the preset current fluctuation amplitude, and determining a second danger index according to the second difference; obtaining the voltage fluctuation amplitude in the voltage change curve, determining whether the voltage fluctuation amplitude is greater than the preset voltage fluctuation amplitude, if the voltage fluctuation amplitude is greater than the preset voltage fluctuation amplitude, calculating a third difference between the voltage fluctuation amplitude and the preset voltage fluctuation amplitude, and determining a third danger index according to the third difference; combining the first danger index, the second danger index, and the third danger index to calculate the initial stability index of the charging pile; Obtaining the environmental data of the location where the charging pile is located, and adjusting the initial stability index according to the environmental data to generate a target stability index; The environmental data includes temperature and humidity, and the adjusting the initial stability index according to the environmental data to generate a target stability index includes: determining whether the temperature is greater than the preset temperature threshold, if the temperature is greater than the preset temperature threshold, calculating a temperature difference between the temperature and the preset temperature threshold; determining whether the humidity is less than the preset humidity threshold, if the humidity is greater than the preset humidity threshold, calculating a humidity difference between the humidity and the preset humidity threshold; combining the temperature difference and the humidity difference to determine an adjustment index; adjusting the initial stability index through the adjustment index to generate a target stability index; When the target stability index is lower than the threshold, an alarm message is generated and charging is stopped.

2. The charging pile safety protection method according to claim 1, wherein, The combining the first danger index, the second danger index, and the third danger index to calculate the initial stability index of the charging pile includes: Substituting the first danger index, the second danger index, and the third danger index into a preset formula to calculate the initial stability index of the charging pile; where The preset formula is: In the formula, S0 is the initial stability index, R1 is the first danger index, R2 is the second danger index, R3 is the third danger index, a1, a2, and a3 are all non-linear term coefficients, b1 and b2 are all cross-term coefficients, and c1 and c2 are all additional interaction term coefficients.

3. The charging pile safety protection method according to claim 1, wherein Determining an adjustment index in combination with the temperature difference and the humidity difference includes: Obtaining a temperature difference range corresponding to the temperature difference, and a first index corresponding to the temperature difference range; Obtaining a humidity difference range corresponding to the humidity difference, and a second index corresponding to the humidity difference range; Assigning the first index as a first weight coefficient and assigning the second index as a second weight coefficient; Arithmetically multiplying the first index by the first weight coefficient to obtain a first adjustment index, and arithmetically multiplying the second index by the second weight coefficient to obtain a second adjustment index; Arithmetically adding the first adjustment index and the second adjustment index to obtain an adjustment index.

4. The charging pile safety protection method according to claim 1, wherein, The method further includes: When the target stability index is not lower than the threshold, estimating the continuous working duration of the charging pile; Judging whether the continuous working duration exceeds the safe working duration. If the continuous working duration exceeds the safe working duration, generating a warning message; Adjusting the charging power of the charging pile according to the warning message.

5. The charging pile safety protection method according to claim 1, wherein, After generating an alarm message and stopping charging when the target stability index is lower than the threshold, it further includes: Obtaining the temperature, current, and voltage data of the charging pile after stopping charging; Calculating the current stability index of the charging pile according to the temperature, current, and voltage data of the charging pile after stopping charging; comparing the current stability index with the target stability index. If the current stability index is higher than the threshold, generating a resume charging instruction to enable the charging pile to start charging; If the current stability index is lower than the threshold, generating a maintenance notice and sending the maintenance notice to the maintenance personnel so that the maintenance personnel can perform maintenance.

6. A charging pile safety protection device, characterized in that, The device includes: an acquisition module, a calculation module, a generation module, and an output module; wherein, The acquisition module is used to acquire the temperature change curve, current change curve, and voltage change curve of the charging pile within a preset duration; The calculation module is configured to calculate an initial stability index of the charging pile according to the temperature change curve, the current change curve, and the voltage change curve. The calculating the initial stability index of the charging pile according to the temperature change curve, the current change curve, and the voltage change curve includes: obtaining a temperature peak value in the temperature change curve, determining whether the temperature peak value is greater than a temperature threshold, if the temperature peak value is greater than the temperature threshold, calculating a first difference between the temperature peak value and the temperature threshold, and determining a first danger index according to the first difference; obtaining an amplitude of current fluctuation in the current change curve, determining whether the amplitude of current fluctuation is greater than a preset amplitude of current fluctuation, if the amplitude of current fluctuation is greater than the preset amplitude of current fluctuation, calculating a second difference between the amplitude of current fluctuation and the preset amplitude of current fluctuation, and determining a second danger index according to the second difference; obtaining an amplitude of voltage fluctuation in the voltage change curve, determining whether the amplitude of voltage fluctuation is greater than a preset amplitude of voltage fluctuation, if the amplitude of voltage fluctuation is greater than the preset amplitude of voltage fluctuation, calculating a third difference between the amplitude of voltage fluctuation and the preset amplitude of voltage fluctuation, and determining a third danger index according to the third difference; combining the first danger index, the second danger index, and the third danger index to calculate the initial stability index of the charging pile; The generation module is configured to obtain environmental data of the location where the charging pile is located, adjust the initial stability index according to the environmental data, and generate a target stability index. The environmental data includes temperature and humidity. The adjusting the initial stability index according to the environmental data to generate a target stability index includes: determining whether the temperature is greater than a preset temperature threshold, if the temperature is greater than the preset temperature threshold, calculating a temperature difference between the temperature and the preset temperature threshold; determining whether the humidity is less than a preset humidity threshold, if the humidity is greater than the preset humidity threshold, calculating a humidity difference between the humidity and the preset humidity threshold; combining the temperature difference and the humidity difference to determine an adjustment index; adjusting the initial stability index by the adjustment index to generate a target stability index; The output module is configured to generate an alarm message and stop charging when the target stability index is lower than a threshold.

7. An electronic device, characterized in that, It includes a processor, a memory, a user interface, and a network interface. The memory is used to store instructions. The user interface and the network interface are used to communicate with other devices. The processor is configured to execute the instructions stored in the memory so that the electronic device executes the method according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, A computer program is stored that can be loaded and executed by a processor to execute the method according to any one of claims 1-5.

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