Monitoring management method and system for mobile charging pile

Abstract

The invention discloses a monitoring management method and system for a mobile charging pile, and relates to the technical field of charging pile monitoring, and the method comprises the steps: evaluating the aging coefficient of the mobile charging pile based on the previous charging record, similar charging record, dissimilar charging record and historical charging parameters of the mobile charging pile; a basis is provided for electric energy aging loss in the subsequent charging process, and the reliability of subsequent charging pile monitoring is ensured. Simulation simulation of line transmission is performed by combining a plurality of position distances and line images among the three positions, and line transmission electric energy loss among the position of the to-be-charged vehicle, the position of the mobile charging pile and the position of the power supply is accurately simulated. Therefore, the output electrical parameters of the mobile charging pile and the standard temperature range of the to-be-charged vehicle battery are predicted, and the reference of subsequent monitoring is determined. And an electrical deviation index and a temperature deviation index are defined, so that the monitoring precision and the safety adaptability are improved, and the charging pile is ensured to safely and stably provide a vehicle battery charging service.

Description

Technical Field

[0001] The present invention relates to the technical field of charging pile monitoring, and in particular to a monitoring and management method and system for a mobile charging pile. Background Art

[0002] The mobile charging pile monitoring solution is mainly derived from the booming electric vehicle industry and its growing demand for charging infrastructure. With the popularization of new energy vehicles, charging piles, as their core supporting facilities, have become the focus of industry attention in terms of safety, reliability and efficiency. In order to achieve efficient, accurate and remote monitoring of charging piles, the solution integrates cutting-edge technologies such as Internet of Things technology, cloud computing, big data analysis, and artificial intelligence. By real-time monitoring of key parameters such as the working status, current, voltage, temperature, and energy consumption of charging piles, and uploading them to cloud servers for storage and analysis, the system can promptly detect and warn of potential problems, ensuring the safe operation of charging piles and the convenience and safety of the user's charging process. At the same time, the solution also supports remote fault diagnosis and control, greatly reducing operation and maintenance costs, and injecting strong impetus into the intelligent transformation of energy management.

[0003] In the prior art, the safety of charging piles is often monitored through fixed electrical parameter thresholds or other parameter thresholds (temperature). However, due to the aging of charging piles or the differences in electric vehicle batteries, fixed thresholds are difficult to adapt to the changeable and complex charging process of charging piles, resulting in low monitoring accuracy of charging piles and poor charging safety adaptability.

[0004] Therefore, how to improve the monitoring accuracy and charging safety adaptability of charging piles is a technical problem that needs to be solved. Summary of the invention

[0005] The purpose of the present invention is to solve the problems of low monitoring accuracy and poor charging safety adaptability of charging piles in the prior art, and to propose a monitoring and management method for mobile charging piles, which includes:

[0006] Obtaining basic information of the mobile charging pile and basic information of the battery of the vehicle to be charged, determining the previous charging record and historical charging parameters of the mobile charging pile according to the basic information of the mobile charging pile, dividing the previous charging record of the mobile charging pile into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, and evaluating the aging coefficient of the mobile charging pile based on the previous charging record, similar charging record, dissimilar charging record and historical charging parameters of the mobile charging pile;

[0007] Before charging the vehicle to be charged, the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source are obtained, and multiple position distances are calculated according to the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and the line images between the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source are obtained. Combined with the multiple position distances and the line images between the three positions, line transmission simulation is performed to determine the power transmission loss;

[0008] The aging coefficient of the mobile charging pile is converted into the electric energy aging loss, the electric energy transmission loss and the electric energy aging loss are integrated to obtain the first total loss and the second total loss, the power supply information is obtained, and the output electrical parameters of the mobile charging pile are predicted according to the power supply information, the basic information of the mobile charging pile and the first total loss, which are recorded as the predicted output electrical parameters, and then the standard temperature range of the battery of the vehicle to be charged is predicted according to the predicted output electrical parameters;

[0009] When the vehicle to be charged is charged, the actual output electrical parameters of the mobile charging pile, the actual input electrical parameters of the battery of the vehicle to be charged and the actual temperature of the battery of the vehicle to be charged are monitored in real time, and an electrical deviation index is defined according to the second total loss, the predicted output electrical parameters, the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged. A temperature deviation index is defined according to the standard temperature range and the actual temperature of the battery of the vehicle to be charged. Charging monitoring of the mobile charging pile is achieved by monitoring the electrical deviation index and the temperature deviation index.

[0010] In some embodiments of the present application, the previous charging records of the mobile charging pile are divided into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, including:

[0011] The basic information of the battery of the vehicle to be charged includes the battery characteristics and the battery charging characteristics. The similarity of each battery characteristic in different previous charging records is compared, and the similarity of all battery characteristics is integrated to divide each charging record in the previous charging records into similar charging records and dissimilar charging records.

[0012] In similar charging records and dissimilar charging records, the weight of each charging record is determined according to the similarity between the interval to which the battery charging feature belongs and the battery's own features.

[0013] In some embodiments of the present application, the aging coefficient of the mobile charging pile is evaluated based on the previous charging records, similar charging records, dissimilar charging records and historical charging parameters of the mobile charging pile, including:

[0014] In the past charging records of the mobile charging pile, similar charging records and dissimilar charging records are marked and distinguished, and these past charging records are arranged in chronological order to determine the historical charging change parameters;

[0015] Determine the aging characterization quantity of the similar charging records and the dissimilar charging records through the similar charging records, the dissimilar charging records and the weight of each charging record, and evaluate the aging coefficient of the mobile charging pile based on the aging characterization quantity of the similar charging records and the dissimilar charging records, the historical charging parameters and the historical charging change parameters;

[0016]

[0017] in, is the aging coefficient of the mobile charging pile, α1 and α2 are the conversion coefficients corresponding to similar charging records and dissimilar charging records, W1 and W2 are the aging characterizations corresponding to similar charging records and dissimilar charging records, τ is the initial aging coefficient, (α1W1+α2W2)→τ represents the initial aging coefficient mapped by the sum of the aging characterizations of similar charging records and dissimilar charging records, n1 and n2 are the number of historical charging parameters and historical charging change parameters, are the combined weights corresponding to the i1th historical charging parameter and the i2th historical charging change parameter, are the sizes of the i1th historical charging parameter and the i2th historical charging change parameter respectively, E is the average conversion coefficient of the historical charging change parameters, and k is a preset constant.

[0018] In some embodiments of the present application, a line transmission simulation is performed by combining multiple position distances and line images between three positions to determine the power transmission loss, including:

[0019] The multiple position distances include the distance between the position of the vehicle to be charged and the position of the mobile charging pile, and the distance between the position of the mobile charging pile and the position of the power source. The line images between the three positions are preprocessed, and the line direction, straight segments, curved segments and line parameters in the line image are extracted based on the edge detection algorithm and the line recognition algorithm;

[0020] A simulation model of electric energy transmission between the position of the vehicle to be charged, the mobile charging pile and the power source is established through line simulation software. The parameters of the simulation model are set according to the line direction, straight segments, curved segments, line parameters, and the distance between the position of the vehicle to be charged and the mobile charging pile, and the distance between the mobile charging pile and the power source. The simulation model is run to simulate the transmission process of electric energy in the line, and the simulation results are analyzed to calculate the electric energy transmission loss.

[0021] In some embodiments of the present application, the output electrical parameters of the mobile charging pile are predicted according to the power supply information, the basic information of the mobile charging pile and the first total loss, including:

[0022] The power supply information includes the voltage, current and frequency of the power supply. The basic information of the mobile charging pile includes efficiency, rated power and output voltage range. The output voltage is determined within the output voltage range based on the basic information of the battery of the vehicle to be charged. The output electrical parameters of the mobile charging pile are predicted by the first total loss, the voltage, current and frequency of the power supply, and the efficiency, rated power and output voltage of the mobile charging pile.

[0023] In some embodiments of the present application, the standard temperature range of the vehicle battery to be charged is predicted based on the predicted output electrical parameters, including:

[0024] A thermal balance equation of the battery is constructed based on basic information of the battery of the vehicle to be charged, and the predicted output electrical parameters and ambient temperature are input into the thermal balance equation of the battery to calculate the standard temperature range of the battery of the vehicle to be charged.

[0025] In some embodiments of the present application, an electrical deviation index is defined based on the second total loss, the predicted output electrical parameter, the actual output electrical parameter of the mobile charging pile, and the actual input electrical parameter of the battery of the vehicle to be charged, including:

[0026] Comparing the predicted output electrical parameters of the mobile charging pile with the actual output electrical parameters to obtain a first electrical deviation index;

[0027] Comparing the actual output electrical parameters of the mobile charging pile with the actual input electrical parameters of the battery of the vehicle to be charged to obtain a second electrical deviation index;

[0028] defining an electrical deviation index based on the second total loss, the first electrical deviation index, and the second electrical deviation index;

[0029]

[0030] Among them, D is the electrical deviation index, D1 is the first electrical deviation index, D2 is the second electrical deviation index, x1 and x2 are the second total loss and the second total loss standard values ​​respectively, f(x1-x2) is the function of the difference between the second total loss and the second total loss standard values, and d is a preset constant.

[0031] In some embodiments of the present application, the temperature deviation index is defined according to the standard temperature range and the actual temperature of the vehicle battery to be charged, including:

[0032] Compare the standard temperature range of the battery of the vehicle to be charged with the actual temperature. If the actual temperature is within the standard temperature range, the temperature deviation index is 0;

[0033] Otherwise, the difference between the actual temperature and the adjacent endpoint in the standard temperature range is calculated, and the temperature deviation index is determined based on the difference. The adjacent endpoint in the standard temperature range is the endpoint of the two endpoints that is closer to the actual temperature.

[0034] Correspondingly, the present application also provides a monitoring and management system for a mobile charging pile, including:

[0035] An evaluation module, used to obtain basic information of the mobile charging pile and basic information of the battery of the vehicle to be charged, determine the previous charging record and historical charging parameters of the mobile charging pile according to the basic information of the mobile charging pile, divide the previous charging record of the mobile charging pile into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, and evaluate the aging coefficient of the mobile charging pile based on the previous charging record, similar charging record, dissimilar charging record and historical charging parameters of the mobile charging pile;

[0036] A simulation module is used to obtain the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source before the vehicle to be charged is charged, and to calculate multiple position distances according to the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, to obtain the line image between the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and to perform line transmission simulation in combination with the multiple position distances and the line image between the three positions, so as to determine the power transmission loss;

[0037] A prediction module, used to convert the aging coefficient of the mobile charging pile into an aging loss of electric energy, integrate the electric energy transmission loss and the electric energy aging loss to obtain a first total loss and a second total loss, obtain power information, predict the output electrical parameters of the mobile charging pile according to the power information, the basic information of the mobile charging pile and the first total loss, record them as predicted output electrical parameters, and then predict the standard temperature range of the battery of the vehicle to be charged according to the predicted output electrical parameters;

[0038] The monitoring module is used to monitor the actual output electrical parameters of the mobile charging pile, the actual input electrical parameters of the battery of the vehicle to be charged and the actual temperature of the battery of the vehicle to be charged in real time when the vehicle to be charged is charged, and to define an electrical deviation index based on the second total loss, the predicted output electrical parameters, the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged, and to define a temperature deviation index based on the standard temperature range and the actual temperature of the battery of the vehicle to be charged, so as to realize charging monitoring of the mobile charging pile by monitoring the electrical deviation index and the temperature deviation index.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. Evaluate the aging coefficient of the mobile charging pile based on its previous charging records, similar charging records, dissimilar charging records and historical charging parameters, provide a basis for the aging loss of electric energy in the subsequent charging process, and ensure the reliability of subsequent charging pile monitoring.

[0041] 2. Combine multiple position distances and line images between three positions to simulate line transmission, so as to determine the power transmission loss, and accurately simulate the line transmission power loss between the position of the vehicle to be charged, the position of the mobile charging pile and the power source. In this way, the output electrical parameters of the mobile charging pile and the standard temperature range of the battery of the vehicle to be charged are predicted, which helps to determine the benchmark for subsequent monitoring.

[0042] 3. Define electrical deviation indicators and temperature deviation indicators to monitor the safety of the charging process of the charging pile, improve monitoring accuracy and safety adaptability, and ensure that the charging pile provides vehicle battery charging services safely and stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A flow chart of a monitoring and management method for a mobile charging pile proposed by the present invention;

[0044] Figure 2 This is a structural schematic diagram of a monitoring and management system for a mobile charging pile proposed by the present invention. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1 , a monitoring and management method for a mobile charging pile, comprising the following steps;

[0047] Step S101, obtaining basic information of the mobile charging pile and basic information of the battery of the vehicle to be charged, determining the previous charging record and historical charging parameters of the mobile charging pile according to the basic information of the mobile charging pile, dividing the previous charging records of the mobile charging pile into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, and evaluating the aging coefficient of the mobile charging pile based on the previous charging records, similar charging records, dissimilar charging records and historical charging parameters of the mobile charging pile.

[0048] In this embodiment, the basic information of the mobile charging pile includes charging records, efficiency, rated power and output voltage range, and the basic information of the vehicle battery to be charged includes battery type, battery capacity, and rated voltage. The historical charging parameters include the total charging time and total number of times of the mobile charging pile. As time goes by and the number of times used increases, the various components inside the mobile charging pile gradually age, resulting in a decrease in performance, which will affect subsequent monitoring. The mobile charging pile contains many electronic components, such as capacitors, resistors, inductors, transformers, rectifiers, filters, etc. These electronic components will gradually age and their performance will decrease during long-term use, thereby affecting the overall performance and service life of the charging pile.

[0049] It should be noted that the mobile charging station may charge multiple batteries of multiple vehicles, and the charging records are divided into similar charging records and dissimilar charging records according to the conditions of the batteries of the vehicles to be charged.

[0050] In some embodiments of the present application, the previous charging records of the mobile charging pile are divided into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, including:

[0051] The basic information of the battery of the vehicle to be charged includes the battery characteristics and the battery charging characteristics. The similarity of each battery characteristic in different previous charging records is compared, and the similarity of all battery characteristics is integrated to divide each charging record in the previous charging records into similar charging records and dissimilar charging records.

[0052] In similar charging records and dissimilar charging records, the weight of each charging record is determined according to the similarity between the interval to which the battery charging feature belongs and the battery's own features.

[0053] In this embodiment, the battery characteristics include the type, capacity, and charging speed of the battery, and the battery charging characteristics are the start and end states of charging, that is, the interval between the battery power at the start and end of charging. The weight is determined by combining the battery characteristics and the interval between the start and end of the battery power. The larger the weight, the more similar the battery condition is to the vehicle to be charged this time, because different conditions have different influences on the aging of the charging pile of the battery of the vehicle to be charged this time.

[0054] In some embodiments of the present application, the aging coefficient of the mobile charging pile is evaluated based on the previous charging records, similar charging records, dissimilar charging records and historical charging parameters of the mobile charging pile, including:

[0055] In the past charging records of the mobile charging pile, similar charging records and dissimilar charging records are marked and distinguished, and these past charging records are arranged in chronological order to determine the historical charging change parameters;

[0056] Determine the aging characterization quantity of the similar charging records and the dissimilar charging records through the similar charging records, the dissimilar charging records and the weight of each charging record, and evaluate the aging coefficient of the mobile charging pile based on the aging characterization quantity of the similar charging records and the dissimilar charging records, the historical charging parameters and the historical charging change parameters;

[0057]

[0058] in, is the aging coefficient of the mobile charging pile, α1 and α2 are the conversion coefficients corresponding to similar charging records and dissimilar charging records, W1 and W2 are the aging characterizations corresponding to similar charging records and dissimilar charging records, τ is the initial aging coefficient, (α1W1+α2W2)→τ represents the initial aging coefficient mapped by the sum of the aging characterizations of similar charging records and dissimilar charging records, n1 and n2 are the number of historical charging parameters and historical charging change parameters, are the combined weights corresponding to the i1th historical charging parameter and the i2th historical charging change parameter, are the sizes of the i1th historical charging parameter and the i2th historical charging change parameter respectively, E is the average conversion coefficient of the historical charging change parameters, and k is a preset constant.

[0059] In this embodiment, when calculating the aging characterization of similar charging records and dissimilar charging records (describing the comprehensive aging performance of similar or dissimilar records), it can be determined by weighted summation or weighted average. The historical charging change parameters include charging rate change, charging amount change, and temperature change.

[0060] Understandably, Indicates the adjustment of the average influence of the overall historical charging change parameters on the overall influence of the historical charging parameters, Indicates the correction of the initial aging coefficient by historical charging parameters and historical charging change parameters.

[0061] Step S102, before charging the vehicle to be charged, obtain the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and calculate multiple position distances based on the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, obtain the line image between the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and combine the multiple position distances and the line image between the three positions to simulate the line transmission, so as to determine the power transmission loss.

[0062] In this embodiment, in order to accurately simulate the power transmission loss, the positions of the vehicle to be charged, the mobile charging pile and the power source are determined. This part of the loss mainly occurs in the process of power transmission from the power source to the charging pile, due to factors such as line resistance and contact resistance (mainly due to line influence). This loss will directly affect the actual power received by the charging pile, thereby affecting its output capacity and battery charging capacity.

[0063] In some embodiments of the present application, a line transmission simulation is performed by combining multiple position distances and line images between three positions to determine the power transmission loss, including:

[0064] The multiple position distances include the distance between the position of the vehicle to be charged and the position of the mobile charging pile, and the distance between the position of the mobile charging pile and the position of the power source. The line images between the three positions are preprocessed, and the line direction, straight segments, curved segments and line parameters in the line image are extracted based on the edge detection algorithm and the line recognition algorithm;

[0065] A simulation model of electric energy transmission between the position of the vehicle to be charged, the mobile charging pile and the power source is established through line simulation software. The parameters of the simulation model are set according to the line direction, straight segments, curved segments, line parameters, and the distance between the position of the vehicle to be charged and the mobile charging pile, and the distance between the mobile charging pile and the power source. The simulation model is run to simulate the transmission process of electric energy in the line, and the simulation results are analyzed to calculate the electric energy transmission loss.

[0066] In this embodiment, the power transmission loss here has two parts, one part is caused by the connection line between the position of the vehicle to be charged and the position of the mobile charging pile, and the other part is caused by the connection line between the position of the mobile charging pile and the power supply position.

[0067] It is understandable that the line direction, straight segments, curved segments and line parameters in the line image are extracted based on the edge detection algorithm and the line recognition algorithm, and the line edge in the image is identified using the edge detection algorithm (such as Canny edge detection, Sobel operator, etc.). The actual direction of the line, including straight segments and curved segments, is extracted from the processed image through Hough Transform or other line recognition algorithms. The pixel coordinates in the line image are converted into actual geographic coordinates to match the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power supply. Based on the converted coordinates, the actual distance between each point is calculated, including the length of the line, the distance between the vehicle to be charged and the mobile charging pile, and the distance between the mobile charging pile and the power supply. A simulation model of power transmission is established using circuit simulation software (such as MATLAB / Simulink, PSCAD, etc.) or a custom algorithm. According to the actual information of the line (such as length, degree of curvature, etc.) and location information, the parameters of the simulation model are set, including line resistance, inductance, capacitance, etc.

[0068] Step S103, converting the aging coefficient of the mobile charging pile into the electric energy aging loss, integrating the electric energy transmission loss and the electric energy aging loss to obtain the first total loss and the second total loss, obtaining the power supply information, predicting the output electrical parameters of the mobile charging pile according to the power supply information, the basic information of the mobile charging pile and the first total loss, recorded as the predicted output electrical parameters, and then predicting the standard temperature range of the battery of the vehicle to be charged according to the predicted output electrical parameters.

[0069] In this embodiment, the aging coefficient of the mobile charging pile is converted into the power aging loss, and the power aging loss model is established according to the battery conditions of the vehicle to be charged and the conditions of the charging pile, and the aging coefficient is input to determine the power aging loss. The first total loss is the power aging loss (charging pile) + the power transmission loss of the line between the position of the vehicle to be charged and the position of the mobile charging pile, and the second total loss is the power aging loss (charging pile) + the power transmission loss of the line between the position of the mobile charging pile and the power supply position.

[0070] In some embodiments of the present application, the output electrical parameters of the mobile charging pile are predicted according to the power supply information, the basic information of the mobile charging pile and the first total loss, including:

[0071] The power supply information includes the voltage, current and frequency of the power supply. The basic information of the mobile charging pile includes efficiency, rated power and output voltage range. The output voltage is determined within the output voltage range based on the basic information of the battery of the vehicle to be charged. The output electrical parameters of the mobile charging pile are predicted by the first total loss, the voltage, current and frequency of the power supply, and the efficiency, rated power and output voltage of the mobile charging pile.

[0072] In this embodiment, the output voltage is determined within the output voltage range according to the basic information of the battery of the vehicle to be charged, and the output voltage of the charging pile is adjusted according to the battery voltage of the vehicle to be charged. If the output voltage range of the charging pile and the voltage requirement of the battery are known, the output voltage can be roughly estimated. The output electrical parameters (voltage and current) of the mobile charging pile are predicted by combining the power supply situation and the mobile charging pile situation, as well as the first total loss.

[0073] In some embodiments of the present application, the standard temperature range of the vehicle battery to be charged is predicted based on the predicted output electrical parameters, including:

[0074] A thermal balance equation of the battery is constructed based on basic information of the battery of the vehicle to be charged, and the predicted output electrical parameters and ambient temperature are input into the thermal balance equation of the battery to calculate the standard temperature range of the battery of the vehicle to be charged.

[0075] In this embodiment, a thermal balance equation of the battery is established based on the principle of energy conservation. The heat generated inside the battery (such as Joule heat), the heat lost through heat conduction, convection and radiation, and the influence of ambient temperature on the battery are considered. The thermal balance equation is simplified to obtain a formula that can be used to predict the range of battery temperature.

[0076] Step S104, when the vehicle to be charged is charged, the actual output electrical parameters of the mobile charging pile, the actual input electrical parameters of the battery of the vehicle to be charged and the actual temperature of the battery of the vehicle to be charged are monitored in real time, and an electrical deviation index is defined according to the second total loss, the predicted output electrical parameters, the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged, and a temperature deviation index is defined according to the standard temperature range and the actual temperature of the battery of the vehicle to be charged, and charging monitoring of the mobile charging pile is achieved by monitoring the electrical deviation index and the temperature deviation index.

[0077] In this embodiment, the electrical deviation index includes two parts. One part is the deviation between the actual output electrical parameters of the mobile charging pile and the predicted output electrical parameters, and the other part is the deviation between the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged (the reasonable deviation in the conversion between the output electrical energy of the charging pile and the received electrical energy of the battery). The electrical deviation index is obtained by combining the two parts.

[0078] In some embodiments of the present application, an electrical deviation index is defined based on the second total loss, the predicted output electrical parameter, the actual output electrical parameter of the mobile charging pile, and the actual input electrical parameter of the battery of the vehicle to be charged, including:

[0079] Comparing the predicted output electrical parameters of the mobile charging pile with the actual output electrical parameters to obtain a first electrical deviation index;

[0080] Comparing the actual output electrical parameters of the mobile charging pile with the actual input electrical parameters of the battery of the vehicle to be charged to obtain a second electrical deviation index;

[0081] defining an electrical deviation index based on the second total loss, the first electrical deviation index, and the second electrical deviation index;

[0082]

[0083] Among them, D is the electrical deviation index, D1 is the first electrical deviation index, D2 is the second electrical deviation index, x1 and x2 are the second total loss and the second total loss standard values ​​respectively, f(x1-x2) is the function of the difference between the second total loss and the second total loss standard values, and d is a preset constant.

[0084] In this embodiment, the first electrical deviation index is determined based on the difference in electrical parameters, and the second electrical deviation index is determined based on the input parameters of the mobile charging pile normally converted to the battery, that is, the normal input electrical parameters of the vehicle battery to be charged are calculated based on the actual output electrical parameters of the mobile charging pile, and the second electrical deviation index is determined by the difference between the normal input electrical parameters and the actual input electrical parameters.

[0085] In this embodiment, the second total loss standard value is determined based on the comprehensive considerations of the charging pile, battery, and circuit. When x1>x2, f(x1-x2)=x1-x2; when x1≤x2, f(x1-x2)=0. It represents the correction of the second total loss difference to the sum of the first electrical deviation index and the second electrical deviation index.

[0086] In some embodiments of the present application, the temperature deviation index is defined according to the standard temperature range and the actual temperature of the vehicle battery to be charged, including:

[0087] Compare the standard temperature range of the battery of the vehicle to be charged with the actual temperature. If the actual temperature is within the standard temperature range, the temperature deviation index is 0;

[0088] Otherwise, the difference between the actual temperature and the adjacent endpoint in the standard temperature range is calculated, and the temperature deviation index is determined based on the difference. The adjacent endpoint in the standard temperature range is the endpoint of the two endpoints that is closer to the actual temperature.

[0089] Compared with the prior art, the present invention has the following beneficial effects:

[0090] 1. Evaluate the aging coefficient of the mobile charging pile based on its previous charging records, similar charging records, dissimilar charging records and historical charging parameters, provide a basis for the aging loss of electric energy in the subsequent charging process, and ensure the reliability of subsequent charging pile monitoring.

[0091] 2. Combine multiple position distances and line images between three positions to simulate line transmission, so as to determine the power transmission loss, and accurately simulate the line transmission power loss between the position of the vehicle to be charged, the position of the mobile charging pile and the power source. In this way, the output electrical parameters of the mobile charging pile and the standard temperature range of the battery of the vehicle to be charged are predicted, which helps to determine the benchmark for subsequent monitoring.

[0092] 3. Define electrical deviation indicators and temperature deviation indicators to monitor the safety of the charging process of the charging pile, improve monitoring accuracy and safety adaptability, and ensure that the charging pile provides vehicle battery charging services safely and stably.

[0093] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present invention can be implemented by hardware, or by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present invention can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present invention.

[0094] Correspondingly, the present application also provides a monitoring and management system for mobile charging piles, such as Figure 2 As shown, including,

[0095] An evaluation module, used to obtain basic information of the mobile charging pile and basic information of the battery of the vehicle to be charged, determine the previous charging record and historical charging parameters of the mobile charging pile according to the basic information of the mobile charging pile, divide the previous charging record of the mobile charging pile into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, and evaluate the aging coefficient of the mobile charging pile based on the previous charging record, similar charging record, dissimilar charging record and historical charging parameters of the mobile charging pile;

[0096] A simulation module is used to obtain the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source before the vehicle to be charged is charged, and to calculate multiple position distances according to the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, to obtain the line image between the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and to perform line transmission simulation in combination with the multiple position distances and the line image between the three positions, so as to determine the power transmission loss;

[0097] A prediction module, used to convert the aging coefficient of the mobile charging pile into an aging loss of electric energy, integrate the electric energy transmission loss and the electric energy aging loss to obtain a first total loss and a second total loss, obtain power information, predict the output electrical parameters of the mobile charging pile according to the power information, the basic information of the mobile charging pile and the first total loss, record them as predicted output electrical parameters, and then predict the standard temperature range of the battery of the vehicle to be charged according to the predicted output electrical parameters;

[0098] The monitoring module is used to monitor the actual output electrical parameters of the mobile charging pile, the actual input electrical parameters of the battery of the vehicle to be charged and the actual temperature of the battery of the vehicle to be charged in real time when the vehicle to be charged is charged, and to define an electrical deviation index based on the second total loss, the predicted output electrical parameters, the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged, and to define a temperature deviation index based on the standard temperature range and the actual temperature of the battery of the vehicle to be charged, so as to realize charging monitoring of the mobile charging pile by monitoring the electrical deviation index and the temperature deviation index.

[0099] Those skilled in the art will appreciate that the accompanying drawings are merely schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily required for implementing the present invention.

[0100] Those skilled in the art will appreciate that the modules in the system in the implementation scenario can be distributed in the system of the implementation scenario according to the implementation scenario description, or can be changed accordingly and located in one or more systems different from the implementation scenario. The modules in the above implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0101] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A monitoring and management method for a mobile charging pile, characterized in that: include, Obtaining basic information of the mobile charging pile and basic information of the battery of the vehicle to be charged, determining the previous charging record and historical charging parameters of the mobile charging pile according to the basic information of the mobile charging pile, dividing the previous charging record of the mobile charging pile into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, and evaluating the aging coefficient of the mobile charging pile based on the previous charging record, similar charging record, dissimilar charging record and historical charging parameters of the mobile charging pile; Before charging the vehicle to be charged, the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source are obtained, and multiple position distances are calculated according to the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and the line images between the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source are obtained. Combined with the multiple position distances and the line images between the three positions, line transmission simulation is performed to determine the power transmission loss; The aging coefficient of the mobile charging pile is converted into the electric energy aging loss, the electric energy transmission loss and the electric energy aging loss are integrated to obtain the first total loss and the second total loss, the power supply information is obtained, and the output electrical parameters of the mobile charging pile are predicted according to the power supply information, the basic information of the mobile charging pile and the first total loss, which are recorded as the predicted output electrical parameters, and then the standard temperature range of the battery of the vehicle to be charged is predicted according to the predicted output electrical parameters; When the vehicle to be charged is charged, the actual output electrical parameters of the mobile charging pile, the actual input electrical parameters of the battery of the vehicle to be charged and the actual temperature of the battery of the vehicle to be charged are monitored in real time, and an electrical deviation index is defined according to the second total loss, the predicted output electrical parameters, the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged. A temperature deviation index is defined according to the standard temperature range and the actual temperature of the battery of the vehicle to be charged. Charging monitoring of the mobile charging pile is achieved by monitoring the electrical deviation index and the temperature deviation index.

2. The monitoring and management method of the mobile charging pile according to claim 1 is characterized in that: The previous charging records of the mobile charging pile are divided into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, including: The basic information of the battery of the vehicle to be charged includes the battery characteristics and the battery charging characteristics. The similarity of each battery characteristic in different previous charging records is compared, and the similarity of all battery characteristics is integrated to divide each charging record in the previous charging records into similar charging records and dissimilar charging records. In similar charging records and dissimilar charging records, the weight of each charging record is determined according to the similarity between the interval to which the battery charging feature belongs and the battery's own features.

3. The monitoring and management method of the mobile charging pile according to claim 2 is characterized in that: The aging coefficient of the mobile charging pile is evaluated based on the previous charging records, similar charging records, dissimilar charging records and historical charging parameters of the mobile charging pile. include, In the past charging records of the mobile charging pile, similar charging records and dissimilar charging records are marked and distinguished, and these past charging records are arranged in chronological order to determine the historical charging change parameters; Determine the aging characterization quantity of the similar charging records and the dissimilar charging records through the similar charging records, the dissimilar charging records and the weight of each charging record, and evaluate the aging coefficient of the mobile charging pile based on the aging characterization quantity of the similar charging records and the dissimilar charging records, the historical charging parameters and the historical charging change parameters; ； in, is the aging coefficient of the mobile charging pile, α1 and α2 are the conversion coefficients corresponding to similar charging records and dissimilar charging records, W1 and W2 are the aging characterizations corresponding to similar charging records and dissimilar charging records, τ is the initial aging coefficient, (α1W1+α2W2)→τ represents the initial aging coefficient mapped by the sum of the aging characterizations of similar charging records and dissimilar charging records, n1 and n2 are the number of historical charging parameters and historical charging change parameters, are the combined weights corresponding to the i1th historical charging parameter and the i2th historical charging change parameter, are the sizes of the i1th historical charging parameter and the i2th historical charging change parameter respectively, E is the average conversion coefficient of the historical charging change parameters, and k is a preset constant.

4. The monitoring and management method of the mobile charging pile according to claim 1, characterized in that: Combine multiple position distances and line images between three positions to simulate line transmission to determine power transmission losses, including: The multiple position distances include the distance between the position of the vehicle to be charged and the position of the mobile charging pile, and the distance between the position of the mobile charging pile and the position of the power source. The line images between the three positions are preprocessed, and the line direction, straight segments, curved segments and line parameters in the line image are extracted based on the edge detection algorithm and the line recognition algorithm; A simulation model of electric energy transmission between the position of the vehicle to be charged, the mobile charging pile and the power source is established through line simulation software. The parameters of the simulation model are set according to the line direction, straight segments, curved segments, line parameters, and the distance between the position of the vehicle to be charged and the mobile charging pile, and the distance between the mobile charging pile and the power source. The simulation model is run to simulate the transmission process of electric energy in the line, and the simulation results are analyzed to calculate the electric energy transmission loss.

5. The monitoring and management method of the mobile charging pile according to claim 1, characterized in that: The output electrical parameters of the mobile charging pile are predicted according to the power supply information, the basic information of the mobile charging pile and the first total loss, including: The power supply information includes the voltage, current and frequency of the power supply. The basic information of the mobile charging pile includes efficiency, rated power and output voltage range. The output voltage is determined within the output voltage range based on the basic information of the battery of the vehicle to be charged. The output electrical parameters of the mobile charging pile are predicted by the first total loss, the voltage, current and frequency of the power supply, and the efficiency, rated power and output voltage of the mobile charging pile.

6. The monitoring and management method of the mobile charging pile according to claim 1, characterized in that: Then, the standard temperature range of the vehicle battery to be charged is predicted based on the predicted output electrical parameters, including: A thermal balance equation of the battery is constructed based on basic information of the battery of the vehicle to be charged, and the predicted output electrical parameters and ambient temperature are input into the thermal balance equation of the battery to calculate the standard temperature range of the battery of the vehicle to be charged.

7. The monitoring and management method of the mobile charging pile according to claim 1, characterized in that: The electrical deviation index is defined according to the second total loss, the predicted output electrical parameter, the actual output electrical parameter of the mobile charging pile and the actual input electrical parameter of the battery of the vehicle to be charged, including: Comparing the predicted output electrical parameters of the mobile charging pile with the actual output electrical parameters to obtain a first electrical deviation index; Comparing the actual output electrical parameters of the mobile charging pile with the actual input electrical parameters of the battery of the vehicle to be charged to obtain a second electrical deviation index; defining an electrical deviation index based on the second total loss, the first electrical deviation index, and the second electrical deviation index; Among them, D is the electrical deviation index, D1 is the first electrical deviation index, D2 is the second electrical deviation index, x1 and x2 are the second total loss and the second total loss standard values ​​respectively, f(x1-x2) is the function of the difference between the second total loss and the second total loss standard values, and d is a preset constant.

8. The monitoring and management method of the mobile charging pile according to claim 1, characterized in that: Define temperature deviation indicators based on the standard temperature range and actual temperature of the vehicle battery to be charged, including: Compare the standard temperature range of the vehicle battery to be charged with the actual temperature. If the actual temperature is within the standard temperature range, the temperature deviation index is 0; Otherwise, the difference between the actual temperature and the adjacent endpoint in the standard temperature range is calculated, and the temperature deviation index is determined based on the difference. The adjacent endpoint in the standard temperature range is the endpoint of the two endpoints that is closer to the actual temperature.

9. A monitoring and management system for a mobile charging pile, characterized in that: include, An evaluation module, used to obtain basic information of the mobile charging pile and basic information of the battery of the vehicle to be charged, determine the previous charging record and historical charging parameters of the mobile charging pile according to the basic information of the mobile charging pile, divide the previous charging record of the mobile charging pile into similar charging records and dissimilar charging records according to the basic information of the battery of the vehicle to be charged, and evaluate the aging coefficient of the mobile charging pile based on the previous charging record, similar charging record, dissimilar charging record and historical charging parameters of the mobile charging pile; A simulation module is used to obtain the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source before the vehicle to be charged is charged, and to calculate multiple position distances according to the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, to obtain the line image between the position of the vehicle to be charged, the position of the mobile charging pile and the position of the power source, and to perform line transmission simulation in combination with the multiple position distances and the line image between the three positions, so as to determine the power transmission loss; A prediction module, used to convert the aging coefficient of the mobile charging pile into an aging loss of electric energy, integrate the electric energy transmission loss and the electric energy aging loss to obtain a first total loss and a second total loss, obtain power information, predict the output electrical parameters of the mobile charging pile according to the power information, the basic information of the mobile charging pile and the first total loss, record them as predicted output electrical parameters, and then predict the standard temperature range of the battery of the vehicle to be charged according to the predicted output electrical parameters; The monitoring module is used to monitor the actual output electrical parameters of the mobile charging pile, the actual input electrical parameters of the battery of the vehicle to be charged and the actual temperature of the battery of the vehicle to be charged in real time when the vehicle to be charged is charged, and to define an electrical deviation index based on the second total loss, the predicted output electrical parameters, the actual output electrical parameters of the mobile charging pile and the actual input electrical parameters of the battery of the vehicle to be charged, and to define a temperature deviation index based on the standard temperature range and the actual temperature of the battery of the vehicle to be charged, so as to realize charging monitoring of the mobile charging pile by monitoring the electrical deviation index and the temperature deviation index.

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