New energy charging cable intelligent test system and method

Abstract

The invention discloses an intelligent test system and method for a new energy charging cable, and relates to the technical field of cable test. The system comprises a primary qualification analysis module which is used for obtaining diameter data and carrying out primary qualification analysis on the new energy charging cable; the test module is used for carrying out cable performance test on the new energy charging cable which represents primary qualification in the primary qualification analysis; the data acquisition module is used for carrying out cable performance test on the new energy charging cable and carrying out data acquisition to obtain charging cable parameter data; and the performance analysis module is used for analyzing the performance qualification condition of the new energy charging cable according to the charging cable parameter data. The performance qualification condition of the new energy charging cable is analyzed according to the charging cable parameter data, the effect of accurately and efficiently determining the performance qualification condition of the new energy charging cable is achieved, and the problem that the performance qualification condition of the new energy charging cable is difficult to accurately and efficiently determine in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable testing, and particularly to an intelligent testing system and method for new energy charging cables. Background Art

[0002] New energy charging cables are important components connecting new energy vehicles and charging piles, and their performance is directly related to charging efficiency and vehicle use safety. With the rapid development of the new energy vehicle market, the demand for charging cables is increasing continuously, and at the same time, the quality and performance requirements for charging cables are also getting higher and higher. Charging cables need to withstand high voltages and currents, and at the same time, they need to adapt to various harsh environmental conditions, such as high temperature, low temperature, humidity, mechanical wear, etc. Therefore, it is necessary to conduct comprehensive and strict tests on charging cables.

[0003] The existing cable testing system outputs a specified level to the inner core to be tested of the cable to be tested, collects the level state of the inner core to be tested after responding to the specified level, and analyzes the path state, short - circuit state, short - connection state or open - circuit state of the inner core to be tested according to the level state, so as to complete the test of the inner core of the cable to be tested and realize the cable testing function.

[0004] For example, the cable tester, cable testing method and cable testing system disclosed in the invention patent announcement with the publication number of: CN111929617B include: a processor, and a communication module, an output module and an input module respectively connected to the processor; the communication module is used to receive the cable information of the cable to be tested selected by an external device and send the cable information to the output module; the output module is used to output a specified level to the inner core to be tested of the cable to be tested based on the cable information; the input module is used to collect the level state of the inner core to be tested after responding to the specified level and send the level state to the processor; the processor is used to determine the test result of the inner core to be tested according to the level state and send the test result to the communication module; the test result includes the path state, short - circuit state, short - connection state or open - circuit state of the inner core to be tested.

[0005] For example, the cable testing method and testing equipment disclosed in the patent application with the publication number of: CN108957213A include: S1: Connect the pins of the first cable plug of the cable so that the pins of the first cable plug form a unidirectional and ordered connection; S2: Apply a specified signal to the current test pin of the second cable plug of the cable; S3: Collect signals from other pins of the second cable plug; S4: Index the current connected pins of the first cable plug according to the number of pins where the applied specified signal or the signal corresponding to the specified signal is collected; and S5: Record that the current test pin of the second cable plug is connected to the current connected pins of the first cable plug.

[0006] However, in the process of implementing the technical solutions of the present invention in the embodiments of the present application, it is found that the above - mentioned technologies have at least the following technical problems:

[0007] In the prior art, there are many factors affecting the performance of new energy charging cables. Existing test methods may not cover all performance indicators, making it difficult to comprehensively evaluate the quality of charging cables. Moreover, errors are prone to occur during the process of recording and processing test data, resulting in the problem that it is difficult to accurately and efficiently determine the performance qualification of new energy charging cables. Summary of the Invention

[0008] By providing an intelligent test system and method for new energy charging cables in an embodiment of the present application, the problem in the prior art that it is difficult to accurately and efficiently determine the performance qualification of new energy charging cables is solved, and the performance qualification of new energy charging cables is accurately and efficiently determined.

[0009] An embodiment of the present application provides an intelligent test system for new energy charging cables, including: a primary qualification analysis module, a test module, a data acquisition module, and a performance analysis module; wherein, the primary qualification analysis module: is used to obtain diameter data and conduct a primary qualification analysis on the new energy charging cable; the test module: is used to conduct cable performance tests on the new energy charging cables indicated as being initially qualified in the primary qualification analysis; the data acquisition module: is used to acquire charging cable parameter data by conducting data acquisition on the cable performance tests of the new energy charging cable; the performance analysis module: is used to analyze the performance qualification of the new energy charging cable based on the charging cable parameter data.

[0010] Further, the specific process of obtaining diameter data and conducting a primary qualification analysis on the new energy charging cable is as follows: Obtain the new energy charging cable, evenly divide the new energy charging cable into N test points, obtain the diameter data at each test point, obtain the standard diameter data of the new energy charging cable, compare each diameter data with the standard diameter data. When the situation where the diameter data is not equal to the standard diameter data occurs five times or more, it indicates that the new energy charging cable is unqualified; in other situations, it indicates that the new energy charging cable is initially qualified.

[0011] Further, the performance qualification includes: cable temperature change qualification, cable breakdown characteristic qualification, and cable conductor resistance qualification; the specific analysis process of the cable temperature change qualification is as follows: Obtain cable temperature change parameter data based on the charging cable parameter data; analyze the cable temperature change qualification degree evaluation index based on the cable temperature change parameter data, and the cable temperature change qualification degree evaluation index is used to reflect the qualification degree of the new energy charging cable in terms of temperature change; analyze the cable temperature change qualification of the new energy charging cable based on the cable temperature change qualification degree evaluation index.

[0012] Further, the specific analysis process for the qualified situation of the cable temperature change of the new energy charging cable is as follows: Obtain the evaluation index for the qualified degree of the cable temperature change, obtain the first threshold for the cable temperature change and the second threshold for the cable temperature change, and compare the evaluation index for the qualified degree of the cable temperature change with the first threshold and the second threshold for the cable temperature change. When the evaluation index for the qualified degree of the cable temperature change is greater than the first threshold for the cable temperature change and less than the second threshold for the cable temperature change, it indicates that the qualified situation of the cable temperature change of the new energy charging cable is qualified; when in other situations, it indicates that the qualified situation of the cable temperature change of the new energy charging cable is unqualified.

[0013] Further, the specific analysis process for the qualified situation of the cable breakdown characteristics is as follows: Obtain the cable breakdown characteristic parameter data according to the charging cable parameter data; analyze the evaluation coefficient for the qualified degree of the cable breakdown characteristics based on the cable breakdown characteristic parameter data, and the evaluation coefficient for the qualified degree of the cable breakdown characteristics is used to reflect the qualified degree of the new energy charging cable in terms of breakdown characteristics; analyze the qualified situation of the cable breakdown characteristics of the new energy charging cable based on the evaluation coefficient for the qualified degree of the cable breakdown characteristics.

[0014] Further, the specific analysis process for the qualified situation of the cable breakdown characteristics of the new energy charging cable is as follows: Obtain the evaluation coefficient for the qualified degree of the cable breakdown characteristics, obtain the first threshold for the cable breakdown characteristics and the second threshold for the cable breakdown characteristics. When the evaluation coefficient for the qualified degree of the cable breakdown characteristics is greater than the first threshold for the cable breakdown characteristics and less than the second threshold for the cable breakdown characteristics, it indicates that the qualified situation of the cable breakdown characteristics of the new energy charging cable is qualified; when in other situations, it indicates that the qualified situation of the cable breakdown characteristics of the new energy charging cable is unqualified.

[0015] Further, the specific analysis process for the qualified situation of the cable conductor resistance is as follows: Obtain the cable conductor resistance parameter data according to the charging cable parameter data; analyze the evaluation index for the qualified degree of the cable conductor resistance based on the cable conductor resistance parameter data, and the evaluation index for the qualified degree of the cable conductor resistance is used to reflect the qualified degree of the new energy charging cable in terms of conductor resistance; analyze the qualified situation of the cable conductor resistance of the new energy charging cable based on the evaluation index for the qualified degree of the cable conductor resistance.

[0016] Further, the specific analysis process for the qualified situation of the cable conductor resistance of the new energy charging cable is as follows: Obtain the evaluation index of the qualified degree of the cable conductor resistance, obtain the first threshold of the cable conductor resistance and the second threshold of the cable conductor resistance. When the evaluation index of the qualified degree of the cable conductor resistance is greater than the first threshold of the cable conductor resistance and less than the second threshold of the cable conductor resistance, it indicates that the qualified situation of the cable conductor resistance of the new energy charging cable is qualified; when in other situations, it indicates that the qualified situation of the cable conductor resistance of the new energy charging cable is unqualified. The specific analysis process for the qualified situation of the performance of the new energy charging cable is as follows: Obtain the qualified situation of the cable temperature change, the qualified situation of the cable breakdown characteristic, and the qualified situation of the cable conductor resistance of the new energy charging cable. When more than one of the unqualified situations of the cable temperature change, the unqualified situation of the cable breakdown characteristic, and the unqualified situation of the cable conductor resistance occurs, it indicates that the performance of the new energy charging cable is unqualified; when in other situations, it indicates that the performance of the new energy charging cable is qualified.

[0017] Further, the specific method for obtaining the evaluation index of the qualified degree of the cable temperature change is as follows: Obtain the number of new energy charging cables for cable performance testing, and number the new energy charging cables; Obtain data from the new energy charging cables multiple times, and number the number of data acquisition times; Obtain the weight ratio of the charging cable temperature at the first test duration, the charging cable temperature at the second test duration, and the charging cable temperature at the third test duration preset from the database; Obtain the cable temperature change parameter data; Construct the calculation formula for the evaluation index of the qualified degree of the cable temperature change according to the cable temperature change parameter data; The specific calculation formula for the evaluation index of the qualified degree of the cable temperature change is:

[0018]

[0019] In the formula, represents the evaluation index of the qualified degree of the cable temperature change of the d0th new energy charging cable, d0 = 1, 2,..., d, d0 represents the number of the new energy charging cable, and d represents the total number of new energy charging cables. represents the charging cable temperature at the first test duration of the d0th new energy charging cable at the s0th data acquisition, s0 = 1, 2,..., s, s0 represents the number of the data acquisition times, and s represents the total number of data acquisition times. represents the charging cable temperature at the second test duration of the d0th new energy charging cable at the s0th data acquisition. represents the charging cable temperature at the third test duration of the d0th new energy charging cable at the s0th data acquisition. represents the standard value of the charging cable temperature at the first test duration of the d0th new energy charging cable. It is expressed as the standard value of the charging cable temperature under the second test duration of the d0th new energy charging cable. It is expressed as the standard value of the charging cable temperature under the third test duration of the d0th new energy charging cable. W1 represents the weight ratio of the charging cable temperature under the first test duration in the evaluation index of the qualified degree of the cable temperature change. W2 represents the weight ratio of the charging cable temperature under the second test duration in the evaluation index of the qualified degree of the cable temperature change. W3 represents the weight ratio of the charging cable temperature under the third test duration in the evaluation index of the qualified degree of the cable temperature change.

[0020] The embodiment of the present application provides an intelligent testing method for new energy charging cables, including the following steps: obtaining diameter data and performing primary qualification analysis on the new energy charging cable; performing cable performance testing on the new energy charging cable that indicates primary qualification in the primary qualification analysis; obtaining charging cable parameter data by performing data acquisition on the cable performance testing of the new energy charging cable; and analyzing the performance qualification situation of the new energy charging cable according to the charging cable parameter data.

[0021] One or more technical solutions provided in the embodiment of the present application have at least the following technical effects or advantages:

[0022] 1. The diameter data is obtained through the primary qualification analysis module and the primary qualification analysis is performed on the new energy charging cable. The cable performance testing is performed on the new energy charging cable that indicates primary qualification in the primary qualification analysis through the testing module. The charging cable parameter data is obtained by performing data acquisition on the cable performance testing of the new energy charging cable through the data acquisition module. Thus, the performance qualification situation of the new energy charging cable is analyzed by the performance analysis module according to the charging cable parameter data, and further, the performance qualification situation of the new energy charging cable is accurately and efficiently determined, effectively solving the problem in the prior art that it is difficult to accurately and efficiently determine the performance qualification situation of the new energy charging cable.

[0023] 2. The cable temperature change parameter data is obtained according to the charging cable parameter data, and the evaluation index of the qualified degree of the cable temperature change is analyzed according to the cable temperature change parameter data. Thus, the qualified situation of the cable temperature change of the new energy charging cable is analyzed according to the evaluation index of the qualified degree of the cable temperature change, and further, the qualified situation of the cable temperature change of the new energy charging cable is more accurately analyzed.

[0024] 3. The cable breakdown characteristic parameter data is obtained according to the charging cable parameter data, and the evaluation coefficient of the qualified degree of the cable breakdown characteristic is analyzed according to the cable breakdown characteristic parameter data. Thus, the qualified situation of the cable breakdown characteristic of the new energy charging cable is analyzed according to the evaluation coefficient of the qualified degree of the cable breakdown characteristic, and further, the qualified situation of the cable breakdown characteristic of the new energy charging cable is conveniently and quickly analyzed. Description of the Drawings

[0025] Figure 1 Schematic structural diagram of an intelligent test system for a new energy charging cable provided by an embodiment of the present application;

[0026] Figure 2 Curve graph of the evaluation index for the qualification degree of the cable conductor resistance provided by an embodiment of the present application;

[0027] Figure 3 Flowchart of an intelligent test method for a new energy charging cable provided by an embodiment of the present application. Specific implementation manners

[0028] Through providing an intelligent test system and method for a new energy charging cable, the embodiment of the present application solves the problem in the prior art that it is difficult to accurately and efficiently clarify the performance qualification of a new energy charging cable. The diameter data is obtained through the primary qualification analysis module and the primary qualification analysis of the new energy charging cable is carried out. The cable performance test is carried out on the new energy charging cable indicating primary qualification in the primary qualification analysis through the test module. The data acquisition module obtains the charging cable parameter data through carrying out data acquisition on the cable performance test of the new energy charging cable. The charging cable parameter data includes cable temperature change parameter data, cable breakdown characteristic parameter data, and cable conductor resistance parameter data. Thus, the performance analysis module analyzes the performance qualification of the new energy charging cable according to the charging cable parameter data, achieving the effect of accurately and efficiently clarifying the performance qualification of the new energy charging cable.

[0029] The technical solution in the embodiment of the present application is to solve the above problem that it is difficult to accurately and efficiently clarify the performance qualification of a new energy charging cable. The general idea is as follows:

[0030] The primary qualification analysis module obtains the diameter data and conducts a primary qualification analysis on the new energy charging cable; the test module conducts a cable performance test on the new energy charging cable indicating primary qualification in the primary qualification analysis; the data acquisition module obtains the charging cable parameter data through carrying out data acquisition on the cable performance test of the new energy charging cable. The charging cable parameter data includes cable temperature change parameter data, cable breakdown characteristic parameter data, and cable conductor resistance parameter data. The performance analysis module obtains the evaluation index for the qualification degree of cable temperature change, the evaluation coefficient for the qualification degree of cable breakdown characteristics, and the evaluation index for the qualification degree of cable conductor resistance according to the cable temperature change parameter data, the cable breakdown characteristic parameter data, and the cable conductor resistance parameter data. The cable temperature change qualification situation, the cable breakdown characteristic qualification situation, and the cable conductor resistance qualification situation are analyzed according to the evaluation index for the qualification degree of cable temperature change, the evaluation coefficient for the qualification degree of cable breakdown characteristics, and the evaluation index for the qualification degree of cable conductor resistance. The performance qualification of the new energy charging cable is analyzed by combining the cable temperature change qualification situation, the cable breakdown characteristic qualification situation, and the cable conductor resistance qualification situation, achieving the effect of accurately and efficiently clarifying the performance qualification of the new energy charging cable.

[0031] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0032] As Figure 1 shown, it is a schematic structural diagram of an intelligent test system for a new energy charging cable provided by an embodiment of the present application. The system includes: a primary qualification analysis module, a test module, a data acquisition module, and a performance analysis module; among them, the primary qualification analysis module: is used to obtain diameter data and perform a primary qualification analysis on the new energy charging cable; the test module: is used to perform cable performance tests on the new energy charging cables that indicate primary qualification in the primary qualification analysis; the data acquisition module: is used to obtain charging cable parameter data by acquiring data during the cable performance tests on the new energy charging cable; the performance analysis module: is used to analyze the performance qualification of the new energy charging cable according to the charging cable parameter data.

[0033] Furthermore, the specific process of obtaining diameter data and performing a primary qualification analysis on the new energy charging cable is as follows: Obtain the new energy charging cable, evenly divide the new energy charging cable into N test points, obtain the diameter data at each test point, obtain the standard diameter data of the new energy charging cable, compare each diameter data with the standard diameter data. When the situation where the diameter data is not equal to the standard diameter data occurs five times or more, it indicates that the new energy charging cable is unqualified; when in other situations, it indicates that the new energy charging cable is initially qualified.

[0034] In this embodiment, N is a positive integer. The larger N is, the more measurement positions of the diameter of the new energy charging cable there are, and the more diameter data is obtained, which can more carefully analyze the qualification of the diameter of the new energy charging cable. Look up the corresponding specification manual of the new energy charging cable to obtain the standard diameter data of the new energy charging cable, and use a high-precision caliper and a professional cable measuring instrument to measure the new energy charging cable to obtain the diameter data.

[0035] By performing a primary qualification analysis on the new energy charging cable, the new energy charging cables that are unqualified in terms of diameter are directly classified into the unqualified cables and not subjected to subsequent tests, and the other new energy charging cables are classified into the qualified cables for subsequent cable performance tests, avoiding performing cable performance tests on each new energy charging cable, and improving the efficiency and reliability of the new energy charging cable test.

[0036] Further, the qualified performance conditions include: the qualified condition of the cable temperature change, the qualified condition of the cable breakdown characteristics, and the qualified condition of the cable conductor resistance; the specific analysis process of the qualified condition of the cable temperature change is as follows: obtaining the cable temperature change parameter data according to the charging cable parameter data; analyzing the qualified degree evaluation index of the cable temperature change according to the cable temperature change parameter data, and the qualified degree evaluation index of the cable temperature change is used to reflect the qualified degree of the new energy charging cable in terms of temperature change; analyzing the qualified condition of the cable temperature change of the new energy charging cable according to the qualified degree evaluation index of the cable temperature change.

[0037] In this embodiment, the charging cable parameter data includes the cable temperature change parameter data, the cable breakdown characteristic parameter data, and the cable conductor resistance parameter data.

[0038] Before analyzing the qualified degree evaluation index of the cable temperature change according to the cable temperature change parameter data, data processing is performed on the qualified condition of the cable temperature change, and the duplicate, incorrect, or incomplete data in the cable temperature change parameter data is removed to ensure the quality and accuracy of the cable temperature change parameter data, which is beneficial to obtaining a more accurate qualified degree evaluation index of the cable temperature change, so that the qualified condition of the cable temperature change of the new energy charging cable can be analyzed more precisely.

[0039] Further, the specific method for obtaining the qualified degree evaluation index of the cable temperature change is as follows: obtaining the number of new energy charging cables for cable performance testing, and numbering the new energy charging cables; obtaining data from the new energy charging cables multiple times, and numbering the number of data acquisition times; obtaining the weight ratio of the charging cable temperature at the preset first test duration, the charging cable temperature at the second test duration, and the charging cable temperature at the third test duration from the database; obtaining the cable temperature change parameter data; constructing a calculation formula for the qualified degree evaluation index of the cable temperature change according to the cable temperature change parameter data; the specific calculation formula for the qualified degree evaluation index of the cable temperature change is as follows:

[0040]

[0041] In the formula, represents the qualified degree evaluation index of the cable temperature change of the d0th new energy charging cable, d0 = 1, 2,..., d, d0 represents the number of the new energy charging cable, and d represents the total number of new energy charging cables. represents the charging cable temperature at the first test duration of the d0th new energy charging cable at the s0th data acquisition, s0 = 1, 2,..., s, s0 represents the number of the data acquisition times, and s represents the total number of data acquisition times. represents the charging cable temperature at the second test duration of the d0th new energy charging cable at the s0th data acquisition. It represents the charging cable temperature at the third test duration when the d0th new energy charging cable obtains data for the s0th time. It represents the standard value of the charging cable temperature at the first test duration of the d0th new energy charging cable. It represents the standard value of the charging cable temperature at the second test duration of the d0th new energy charging cable. It represents the standard value of the charging cable temperature at the third test duration of the d0th new energy charging cable. W1 represents the weight ratio of the charging cable temperature at the first test duration in the evaluation index of the qualified degree of the cable temperature change. W2 represents the weight ratio of the charging cable temperature at the second test duration in the evaluation index of the qualified degree of the cable temperature change. W3 represents the weight ratio of the charging cable temperature at the third test duration in the evaluation index of the qualified degree of the cable temperature change.

[0042] In this embodiment, W1 is the weight ratio corresponding to the charging cable temperature at the preset first test duration obtained from the database, which is a numerical value used to represent the influence degree of the change in the first duration on the evaluation index of the qualified degree of the charging cable temperature change at the first test duration. When in use, the weight ratio corresponding to the charging cable temperature at the first test duration corresponding to the first duration can be directly obtained from the database, and its corresponding relationship can be a pre-set mapping relationship. For example, the first duration and the weight ratio corresponding to the charging cable temperature at the first test duration form a mapping set, and the real-time first duration is input into the mapping set to obtain the weight ratio corresponding to the charging cable temperature at the first test duration.

[0043] W2 is the weight ratio corresponding to the charging cable temperature at the preset second test duration obtained from the database, which is a numerical value used to represent the influence degree of the change in the second duration on the evaluation index of the qualified degree of the charging cable temperature change at the second test duration. When in use, the weight ratio corresponding to the charging cable temperature at the second test duration corresponding to the second duration can be directly obtained from the database, and its corresponding relationship can be a pre-set mapping relationship. For example, the second duration and the weight ratio corresponding to the charging cable temperature at the second test duration form a mapping set, and the real-time second duration is input into the mapping set to obtain the weight ratio corresponding to the charging cable temperature at the second test duration.

[0044] W3 is the weight ratio corresponding to the charging cable temperature under a preset third test duration obtained from the database, which is a value used to represent the influence degree of the change in the third duration on the evaluation index of the qualified degree of the charging cable temperature change under the third test duration. When in use, the weight ratio corresponding to the charging cable temperature under the third duration can be directly obtained from the database, and its corresponding relationship can be a pre-set mapping relationship. For example, the third duration and the weight ratio corresponding to the charging cable temperature under the third test duration form a mapping set, and the real-time third duration is input into the mapping set to obtain the weight ratio corresponding to the charging cable temperature under the third test duration.

[0045] In this embodiment, the value ranges of the weight ratios corresponding to the charging cable temperature under the first test duration, the weight ratio corresponding to the charging cable temperature under the second test duration, and the weight ratio corresponding to the charging cable temperature under the third test duration are all (0, 1), and the sum of the three is 1.

[0046] Set the usage time of the new energy charging cable. The usage time includes the first duration, the second duration, and the third duration. The first duration is less than the second duration, and the second duration is less than the third duration. The new energy charging cable is used according to the first duration, the second duration, and the third duration. At the end of the time, use a temperature sensor, an infrared thermal imager, and a fiber optic temperature sensor, etc. to measure the temperature of the new energy charging cable. The new energy charging cable obtains the temperatures after using the first duration, the second duration, and the third duration, that is, the charging cable temperature under the first test duration, the charging cable temperature under the second test duration, and the charging cable temperature under the third test duration. Obtain its industry standard parameters or product data required by customers as standard values. In addition, for the production of existing samples, during the customer's use, if all aspects of the cable meet the customer's requirements, this product can be used as a standard template for testing, and production can be carried out according to the parameters after testing, and then the performance of the produced product can be tested. Due to different test environments, in order to keep the test parameters of the produced product different from the parameters to be obtained, this method reduces the test error caused by the environment by obtaining the standard parameters obtained by testing the standard new energy charging cable in the same environment as the production test environment. The specific process is as follows: Operate the standard new energy charging cable according to the process of obtaining the charging cable temperature under the first test duration, the charging cable temperature under the second test duration, and the charging cable temperature under the third test duration of the new energy charging cable to be tested above to obtain the standard value of the charging cable temperature under the first test duration, the standard value of the charging cable temperature under the second test duration, and the standard value of the charging cable temperature under the third test duration.

[0047] Under different test durations, the temperature rise characteristics of new energy charging cables will change to a certain extent. For example, the longer the test duration, the higher the temperature of the new energy charging cable. However, in this test, the degree of temperature change of the measured new energy charging cable and the standard new energy charging cable may not be the same. By comparing the cable temperature at the first test duration, the cable temperature at the second test duration, and the cable temperature at the third test duration with the standard values of the cable temperature at the first test duration, the standard value of the cable temperature at the second test duration, and the standard value of the cable temperature at the third test duration respectively, the differences in the temperature rise characteristics between the measured new energy charging cable and the standard new energy charging cable are clarified. If the temperature rise characteristics of the measured new energy charging cable are equivalent to those of the standard new energy charging cable, it is determined to be qualified; if there are significant differences, it is determined to be unqualified.

[0048] In the algorithm of this embodiment, by performing a non-linear transformation on the cable temperature change parameter data using an exponential function, the change in the evaluation index of the cable temperature change qualification degree becomes more obvious, which is beneficial to more accurately analyzing the cable temperature change qualification situation of the new energy charging cable according to the evaluation index of the cable temperature change qualification degree.

[0049] Furthermore, the specific analysis process of the cable temperature change qualification situation of the new energy charging cable is as follows: obtain the evaluation index of the cable temperature change qualification degree, obtain the first threshold of the cable temperature change and the second threshold of the cable temperature change, and compare the evaluation index of the cable temperature change qualification degree with the first threshold of the cable temperature change and the second threshold of the cable temperature change. When the evaluation index of the cable temperature change qualification degree is greater than the first threshold of the cable temperature change and less than the second threshold of the cable temperature change, it indicates that the cable temperature change qualification situation of the new energy charging cable is qualified; in other cases, it indicates that the cable temperature change qualification situation of the new energy charging cable is unqualified.

[0050] In this embodiment, during the initial stage of establishing the detection system, relevant data from previous test processes will be manually input as standard data, reference data, or data for production evaluation. Additionally, during the system setup process, a large amount of test data will be continuously fed in for debugging and adjustment. The system database will store various historical data sets, and each test data will be stored in the database as new historical data. Obtain historical cable temperature change parameter data, which includes the charging cable temperature at the first historical test duration, the charging cable temperature at the second test duration, the charging cable temperature at the third test duration, the standard value of the charging cable temperature at the first test duration, the standard value of the charging cable temperature at the second test duration, and the standard value of the charging cable temperature at the third test duration. Obtain the evaluation index for the qualified degree of historical cable temperature change based on the historical cable temperature change parameter data, extract the evaluation index for the qualified degree of historical cable temperature change indicating that the cable temperature change of the new energy charging cable is qualified, arrange the evaluation index for the qualified degree of historical cable temperature change in ascending order, and use the evaluation index for the qualified degree of historical cable temperature change ranked first and last as the first threshold and the second threshold for cable temperature change respectively.

[0051] Obtain the first threshold and the second threshold for cable temperature change. The first threshold and the second threshold for cable temperature change are U1 and U2 respectively, where U1 is 1.37 and U2 is 1.43. Compare the evaluation index for the qualified degree of cable temperature change with the first threshold and the second threshold for cable temperature change. When the evaluation index for the qualified degree of cable temperature change is greater than the first threshold for cable temperature change and less than the second threshold for cable temperature change, that is When it is, it indicates that the cable temperature change of the new energy charging cable is qualified; when in other situations, that is or When it is, it indicates that the cable temperature change of the new energy charging cable is unqualified.

[0052] Furthermore, the specific analysis process for the qualified situation of cable breakdown characteristics is as follows: Obtain cable breakdown characteristic parameter data based on the charging cable parameter data; Analyze the evaluation coefficient for the qualified degree of cable breakdown characteristics according to the cable breakdown characteristic parameter data, and the evaluation coefficient for the qualified degree of cable breakdown characteristics is used to reflect the qualified degree of the new energy charging cable in terms of breakdown characteristics; Analyze the qualified situation of the cable breakdown characteristics of the new energy charging cable according to the evaluation coefficient for the qualified degree of cable breakdown characteristics.

[0053] In this embodiment, the specific method for obtaining the evaluation coefficient of the cable breakdown characteristic qualification degree is as follows: Obtain the number of new energy charging cables for cable performance testing, and number the new energy charging cables; Obtain data from the new energy charging cables multiple times, and number the number of data acquisition times; Obtain the weight ratios of the cable breakdown duration under the preset primary voltage, the cable breakdown duration under the secondary voltage, and the cable breakdown duration under the tertiary voltage from the database; Obtain the cable breakdown characteristic parameter data; Construct a calculation formula for the evaluation coefficient of the cable breakdown characteristic qualification degree according to the cable breakdown characteristic parameter data; The specific calculation formula for the evaluation coefficient of the cable breakdown characteristic qualification degree is:

[0054]

[0055] In the formula, represents the evaluation coefficient of the cable breakdown characteristic qualification degree of the d0th new energy charging cable, d0 = 1, 2,..., d, where d0 represents the number of the new energy charging cable, and d represents the total number of new energy charging cables, represents the cable breakdown duration under the primary voltage of the d0th new energy charging cable at the s0th data acquisition, s0 = 1, 2,..., s, where s0 represents the number of the data acquisition times, and s represents the total number of data acquisition times, represents the cable breakdown duration under the secondary voltage of the d0th new energy charging cable at the s0th data acquisition, represents the cable breakdown duration under the tertiary voltage of the d0th new energy charging cable at the s0th data acquisition, represents the cable breakdown reference duration under the primary voltage of the d0th new energy charging cable, represents the cable breakdown reference duration under the secondary voltage of the d0th new energy charging cable, represents the cable breakdown reference duration under the tertiary voltage of the d0th new energy charging cable, D1 represents the weight ratio of the cable breakdown duration under the primary voltage in the evaluation coefficient of the cable breakdown characteristic qualification degree, D2 represents the weight ratio of the cable breakdown duration under the secondary voltage in the evaluation coefficient of the cable breakdown characteristic qualification degree, D3 represents the weight ratio of the cable breakdown duration under the tertiary voltage in the evaluation coefficient of the cable breakdown characteristic qualification degree, and e represents the natural constant.

[0056] D1 represents the weight ratio corresponding to the breakdown duration of the cable under the preset primary voltage obtained from the database, which is a numerical value used to represent the influence degree of the change in the primary test voltage on the evaluation coefficient of the cable breakdown characteristics qualified degree due to the breakdown duration of the cable under the primary voltage. When in use, the weight ratio corresponding to the breakdown duration of the cable under the primary voltage corresponding to the primary test voltage can be directly obtained from the database, and its corresponding relationship can be a preset mapping relationship. For example, the primary test voltage and the weight ratio corresponding to the breakdown duration of the cable under the primary voltage form a mapping set, and the real-time primary test voltage is input into the mapping set to obtain the weight ratio corresponding to the breakdown duration of the cable under the primary voltage.

[0057] D2 represents the weight ratio corresponding to the breakdown duration of the cable under the preset secondary voltage obtained from the database, which is a numerical value used to represent the influence degree of the change in the secondary test voltage on the evaluation coefficient of the cable breakdown characteristics qualified degree due to the breakdown duration of the cable under the secondary voltage. When in use, the weight ratio corresponding to the breakdown duration of the cable under the secondary voltage corresponding to the secondary test voltage can be directly obtained from the database, and its corresponding relationship can be a preset mapping relationship. For example, the secondary test voltage and the weight ratio corresponding to the breakdown duration of the cable under the secondary voltage form a mapping set, and the real-time secondary test voltage is input into the mapping set to obtain the weight ratio corresponding to the breakdown duration of the cable under the secondary voltage.

[0058] D3 represents the weight ratio corresponding to the breakdown duration of the cable under the preset tertiary voltage obtained from the database, which is a numerical value used to represent the influence degree of the change in the tertiary test voltage on the evaluation coefficient of the cable breakdown characteristics qualified degree due to the breakdown duration of the cable under the tertiary voltage. When in use, the weight ratio corresponding to the breakdown duration of the cable under the tertiary voltage corresponding to the tertiary test voltage can be directly obtained from the database, and its corresponding relationship can be a preset mapping relationship. For example, the tertiary test voltage and the weight ratio corresponding to the breakdown duration of the cable under the tertiary voltage form a mapping set, and the real-time tertiary test voltage is input into the mapping set to obtain the weight ratio corresponding to the breakdown duration of the cable under the tertiary voltage.

[0059] In this embodiment, the value ranges of the weight ratio corresponding to the breakdown duration of the cable under the primary voltage, the weight ratio corresponding to the breakdown duration of the cable under the secondary voltage, and the weight ratio corresponding to the breakdown duration of the cable under the tertiary voltage are all (0, 1), and the sum of the three is 1.

[0060] Set 98%, 100%, and 102% of the breakdown voltage of the new energy charging cable as the first-level test voltage, the second-level test voltage, and the third-level test voltage respectively. Test the standard new energy charging cable at the first-level test voltage, the second-level test voltage, and the third-level test voltage, and use a timer to record the duration from the start of the test to breakdown of the standard new energy charging cable, that is, obtain the reference breakdown duration of the cable under the first-level voltage, the reference breakdown duration of the cable under the second-level voltage, and the reference breakdown duration of the cable under the third-level voltage. Test the new energy charging cable to be tested at the first-level test voltage, the second-level test voltage, and the third-level test voltage, and record the duration before breakdown of the new energy charging cable to be tested within the reference breakdown duration of the cable under the first-level voltage, the reference breakdown duration of the cable under the second-level voltage, and the reference breakdown duration of the cable under the third-level voltage, that is, obtain the breakdown duration of the cable under the first-level voltage, the breakdown duration of the cable under the second-level voltage, and the breakdown duration of the cable under the third-level voltage.

[0061] Test the new energy charging cable to be tested using the first-level test voltage, the second-level test voltage, and the third-level test voltage. When the breakdown duration of the cable under the first-level voltage, the breakdown duration of the cable under the second-level voltage, and the breakdown duration of the cable under the third-level voltage of the new energy charging cable to be tested have a large difference from the reference breakdown duration of the cable under the first-level voltage, the reference breakdown duration of the cable under the second-level voltage, and the reference breakdown duration of the cable under the third-level voltage of the standard new energy charging cable, it indicates that the breakdown characteristics of the new energy charging cable to be tested are unqualified. When in other situations, it indicates that the breakdown characteristics of the new energy charging cable to be tested are qualified.

[0062] In the algorithm of this embodiment, by performing a non-linear transformation on the cable breakdown characteristic parameter data using the hyperbolic cosine function, the data that is too large or too small in the cable breakdown characteristic parameter data is smoothed, reducing its influence on the evaluation coefficient of the cable breakdown characteristic qualification degree, which is beneficial to obtaining a more accurate evaluation coefficient of the cable breakdown characteristic qualification degree and is beneficial to more precisely analyzing the qualification situation of the breakdown characteristics of the new energy charging cable according to the evaluation coefficient of the cable breakdown characteristic qualification degree.

[0063] Furthermore, the specific analysis process of the qualification situation of the cable breakdown characteristics of the new energy charging cable is as follows: Obtain the evaluation coefficient of the cable breakdown characteristic qualification degree, obtain the first threshold of the cable breakdown characteristic and the second threshold of the cable breakdown characteristic. When the evaluation coefficient of the cable breakdown characteristic qualification degree is greater than the first threshold of the cable breakdown characteristic and less than the second threshold of the cable breakdown characteristic, it indicates that the qualification situation of the cable breakdown characteristics of the new energy charging cable is qualified; when in other situations, it indicates that the qualification situation of the cable breakdown characteristics of the new energy charging cable is unqualified.

[0064] In this embodiment, during the initial stage of establishing the detection system, relevant data from previous test processes will be manually input as standard data, reference data, or data for production evaluation. Additionally, during the system setup process, a large amount of test data will be continuously fed in for debugging and adjustment. Each historical dataset will be stored in the system database, and the data from each test will be stored in the database as new historical data. Historical cable breakdown characteristic parameter data will be obtained, including the breakdown duration of the cable under the first-level voltage, the breakdown duration of the cable under the second-level voltage, the breakdown duration of the cable under the third-level voltage, the reference breakdown duration of the cable under the first-level voltage, the reference breakdown duration of the cable under the second-level voltage, and the reference breakdown duration of the cable under the third-level voltage. Based on the historical cable breakdown characteristic parameter data, an evaluation coefficient for the qualification degree of the historical cable breakdown characteristics will be obtained. The evaluation coefficients for the qualification degree of the historical cable breakdown characteristics indicating that the cable breakdown characteristics of the new energy charging cable are qualified will be extracted. The evaluation coefficients for the qualification degree of the historical cable breakdown characteristics will be arranged in ascending order, and the evaluation coefficients for the qualification degree of the historical cable breakdown characteristics ranked first and last will be used as the first threshold and the second threshold for the cable breakdown characteristics, respectively.

[0065] Obtain the evaluation coefficient for the qualification degree of the cable breakdown characteristics, obtain the first threshold and the second threshold for the cable breakdown characteristics. The first threshold and the second threshold for the cable breakdown characteristics are E1 and E2, respectively. E1 is 1.47 and E2 is 1.60. When the evaluation coefficient for the qualification degree of the cable breakdown characteristics is greater than the first threshold for the cable breakdown characteristics and less than the second threshold for the cable breakdown characteristics, that is it indicates that the cable breakdown characteristics of the new energy charging cable are qualified; in other cases, that is or it indicates that the cable breakdown characteristics of the new energy charging cable are unqualified.

[0066] Furthermore, the specific analysis process for the qualification of the cable conductor resistance is as follows: Obtain the cable conductor resistance parameter data based on the charging cable parameter data; analyze the evaluation index for the qualification degree of the cable conductor resistance based on the cable conductor resistance parameter data. The evaluation index for the qualification degree of the cable conductor resistance is used to reflect the qualification degree of the new energy charging cable in terms of the conductor resistance; analyze the qualification of the cable conductor resistance of the new energy charging cable based on the evaluation index for the qualification degree of the cable conductor resistance.

[0067] In this embodiment, the specific method for obtaining the evaluation index of the cable conductor resistance qualification degree is as follows: obtain the number of new energy charging cables for cable performance testing, and number the new energy charging cables; perform multiple data acquisitions on the new energy charging cables, and number the number of data acquisitions; obtain the number of cores of the new energy charging cables, and number the number of cores of the new energy charging cables; obtain the weight ratios of the conductor resistance values under the preset first-level current, second-level current, and third-level current from the database; obtain the cable conductor resistance parameter data; construct a calculation formula for the evaluation index of the cable conductor resistance qualification degree according to the cable conductor resistance parameter data; the specific calculation formula for the evaluation index of the cable conductor resistance qualification degree is:

[0068]

[0069] In the formula, represents the evaluation index of the cable conductor resistance qualification degree of the d0th new energy charging cable, d0 = 1, 2,..., d, d0 represents the number of the new energy charging cable, and d represents the total number of new energy charging cables. represents the conductor resistance value under the first-level current of the x0th core of the d0th new energy charging cable at the s0th data acquisition, x0 = 1, 2,..., x, x0 represents the number of the core number of the new energy charging cable, x represents the total number of cores of the new energy charging cable, s0 = 1, 2,..., s, s0 represents the number of the data acquisition times, and s represents the total number of data acquisitions. represents the conductor resistance value under the second-level current of the x0th core of the d0th new energy charging cable at the s0th data acquisition. represents the conductor resistance value under the third-level current of the x0th core of the d0th new energy charging cable at the s0th data acquisition. represents the reference value of the conductor resistance under the first-level current of the x0th core of the d0th new energy charging cable. represents the reference value of the conductor resistance under the second-level current of the x0th core of the d0th new energy charging cable. represents the reference value of the conductor resistance under the third-level current of the x0th core of the d0th new energy charging cable. R1 represents the weight ratio of the conductor resistance value under the first-level current in the evaluation index of the cable conductor resistance qualification degree, R2 represents the weight ratio of the conductor resistance value under the second-level current in the evaluation index of the cable conductor resistance qualification degree, R3 represents the weight ratio of the conductor resistance value under the third-level current in the evaluation index of the cable conductor resistance qualification degree, and e represents the natural constant.

[0070] R1 represents the weight ratio corresponding to the conductor resistance value at a preset primary current obtained from the database, which is a value used to represent the influence degree of the change in the primary test current on the evaluation index of the cable conductor resistance qualification degree by the conductor resistance value at the primary current. When in use, the weight ratio corresponding to the conductor resistance value at the primary current corresponding to the primary test current can be directly obtained from the database, and its corresponding relationship can be a preset mapping relationship. For example, the primary test current and the weight ratio corresponding to the conductor resistance value at the primary current form a mapping set, and the real-time primary test current is input into the mapping set to obtain the weight ratio corresponding to the conductor resistance value at the primary current.

[0071] R2 represents the weight ratio corresponding to the conductor resistance value at a preset secondary current obtained from the database, which is a value used to represent the influence degree of the change in the secondary test current on the evaluation index of the cable conductor resistance qualification degree by the conductor resistance value at the secondary current. When in use, the weight ratio corresponding to the conductor resistance value at the secondary current corresponding to the secondary test current can be directly obtained from the database, and its corresponding relationship can be a preset mapping relationship. For example, the secondary test current and the weight ratio corresponding to the conductor resistance value at the secondary current form a mapping set, and the real-time secondary test current is input into the mapping set to obtain the weight ratio corresponding to the conductor resistance value at the secondary current.

[0072] R3 represents the weight ratio corresponding to the conductor resistance value at a preset tertiary current obtained from the database, which is a value used to represent the influence degree of the change in the tertiary test current on the evaluation index of the cable conductor resistance qualification degree by the conductor resistance value at the tertiary current. When in use, the weight ratio corresponding to the conductor resistance value at the tertiary current corresponding to the tertiary test current can be directly obtained from the database, and its corresponding relationship can be a preset mapping relationship. For example, the tertiary test current and the weight ratio corresponding to the conductor resistance value at the tertiary current form a mapping set, and the real-time tertiary test current is input into the mapping set to obtain the weight ratio corresponding to the conductor resistance value at the tertiary current.

[0073] In this embodiment, the value ranges of the weight ratio corresponding to the conductor resistance value at the primary current, the weight ratio corresponding to the conductor resistance value at the secondary current, and the weight ratio corresponding to the conductor resistance value at the tertiary current are all (0, 1), and the sum of the three is 1.

[0074] Set 9%, 10% and 11% of the rated current as the first - level test current, the second - level test current and the third - level test current according to the rated current of the new - energy charging cable. Connect the two ends of the new - energy charging cable to the corresponding ports of the resistance tester respectively. For a new - energy charging cable with multiple cores, each core needs to be tested separately. Select a suitable test mode (usually the resistance measurement mode) on the resistance tester, start the resistance tester, and make it apply the selected first - level test current, second - level test current and third - level test current to the new - energy charging cable. The resistance tester will display the measured conductor resistance value, that is, the conductor resistance value under the first - level current, the conductor resistance value under the second - level current and the conductor resistance value under the third - level current. Operate the standard new - energy charging cable according to the above process to obtain the reference conductor resistance value under the first - level current, the reference conductor resistance value under the second - level current and the reference conductor resistance value under the third - level current.

[0075] Test the new - energy charging cable to be tested under the first - level test current, the second - level test current and the third - level test current. When the conductor resistance value under the first - level current, the conductor resistance value under the second - level current and the conductor resistance value under the third - level current of the new - energy charging cable to be tested have a large gap from the reference conductor resistance value under the first - level current, the reference conductor resistance value under the second - level current and the reference conductor resistance value under the third - level current of the standard new - energy charging cable, it indicates that the conductor resistance of the new - energy charging cable to be tested is unqualified. When in other situations, it indicates that the conductor resistance of the new - energy charging cable to be tested is qualified.

[0076] In the algorithm of this embodiment, the hyperbolic tangent function is used to perform non - linear transformation on the cable conductor resistance parameter data to smooth the cable conductor resistance parameter data, so as to obtain a cable conductor resistance qualification degree evaluation index with higher accuracy through the cable conductor resistance parameter data, which is beneficial to more accurately analyze the cable conductor resistance qualification situation according to the cable conductor resistance qualification degree evaluation index.

[0077] In a specific embodiment, as Figure 2 shown, it is the curve graph of the cable conductor resistance qualification degree evaluation index provided by the embodiment of the present application. The conductor resistance value under the first - level current is used as the independent variable, and the cable conductor resistance qualification degree evaluation index is used as the dependent variable. For example, perform a data acquisition on the fourth new - energy charging cable. The fourth new - energy charging cable has one core. Through the analysis of the increase and decrease of Curve 1, Curve 2 and Curve 3, it can be seen that when the conductor resistance value under the first - level current is larger, the cable conductor resistance qualification degree evaluation index is larger; when the conductor resistance value under the first - level current is smaller, the cable conductor resistance qualification degree evaluation index is smaller. The relevant data statistical table of the cable conductor resistance qualification degree evaluation index is shown in Table 1:

[0078] Table 1 Relevant data statistical table of the cable conductor resistance qualification degree evaluation index

[0079]

[0080] When the conductor resistance values of Curve 1, Curve 2, and Curve 3 under the third-level current are 0.20 Ω, 0.19 Ω, and 0.18 Ω respectively, and other parameters are the same, the cable conductor resistance qualification evaluation indexes of Curve 1, Curve 2, and Curve 3 are 0.78, 0.77, and 0.76 respectively. It can be seen that when the conductor resistance value under the first-level current is the same as other parameters, when the conductor resistance value under the third-level current is larger, the cable conductor resistance qualification evaluation index is larger.

[0081] Furthermore, the specific analysis process for the qualification of the cable conductor resistance of the new energy charging cable is as follows: Obtain the cable conductor resistance qualification evaluation index, obtain the first threshold of the cable conductor resistance and the second threshold of the cable conductor resistance. When the cable conductor resistance qualification evaluation index is greater than the first threshold of the cable conductor resistance and less than the second threshold of the cable conductor resistance, it indicates that the qualification of the cable conductor resistance of the new energy charging cable is qualified; when in other situations, it indicates that the qualification of the cable conductor resistance of the new energy charging cable is unqualified. The specific analysis process for the qualification of the performance of the new energy charging cable is as follows: Obtain the qualification of the cable temperature change of the new energy charging cable, the qualification of the cable breakdown characteristics, and the qualification of the cable conductor resistance. When more than one of the unqualified qualification of the cable temperature change, the unqualified qualification of the cable breakdown characteristics, and the unqualified qualification of the cable conductor resistance occurs, it indicates that the performance of the new energy charging cable is unqualified; when in other situations, it indicates that the performance of the new energy charging cable is qualified.

[0082] In this embodiment, during the initial stage of establishing the detection system, relevant data from previous test processes will be manually input as standard data or reference data or as data for production evaluation. Additionally, during the system setup process, a large amount of test data will be continuously fed in for debugging and adjustment. The system database will store various historical data sets, and each test data will be stored in the database as new historical data. Obtain historical cable conductor resistance parameter data, which includes historical conductor resistance values under the first-level current, second-level current, and third-level current, reference values of conductor resistance under the first-level current, reference values of conductor resistance under the second-level current, and reference values of conductor resistance under the third-level current. Obtain the historical cable conductor resistance qualification evaluation index based on the historical cable conductor resistance parameter data, extract the historical cable conductor resistance qualification evaluation index indicating that the qualification of the cable conductor resistance of the new energy charging cable is qualified, arrange the historical cable conductor resistance qualification evaluation index in ascending order, and use the historical cable conductor resistance qualification evaluation index ranked first and last as the first threshold and the second threshold of the cable conductor resistance respectively.

[0083] Obtain the evaluation index of the cable conductor resistance qualification, obtain the first threshold of the cable conductor resistance and the second threshold of the cable conductor resistance. The first threshold of the cable conductor resistance and the second threshold of the cable conductor resistance are G1 and G2 respectively. G1 is 0.72 and G2 is 0.78. When the evaluation index of the cable conductor resistance qualification is greater than the first threshold of the cable conductor resistance and less than the second threshold of the cable conductor resistance, that is it indicates that the cable conductor resistance qualification of the new energy charging cable is qualified; when in other situations, that is or it indicates that the cable conductor resistance qualification of the new energy charging cable is unqualified

[0084] By analyzing the qualification of the cable temperature change, the cable breakdown characteristic, and the cable conductor resistance of the new energy charging cable, the performance qualification of the new energy charging cable can be more comprehensively and specifically determined, making the safety and reliability of the new energy charging cable more guaranteed. When more than one of the qualification of the cable temperature change, the qualification of the cable breakdown characteristic, and the qualification of the cable conductor resistance is unqualified, it indicates that the performance of the new energy charging cable is unqualified; when in other situations, it indicates that the performance of the new energy charging cable is qualified.

[0085] As Figure 3 shown, it is a flowchart of an intelligent test method for a new energy charging cable provided by an embodiment of the present application. An intelligent test method for a new energy charging cable includes the following steps: obtaining diameter data and performing a primary qualification analysis on the new energy charging cable; performing a cable performance test on the new energy charging cable that indicates primary qualification in the primary qualification analysis; obtaining charging cable parameter data by performing data acquisition on the cable performance test of the new energy charging cable; and analyzing the performance qualification of the new energy charging cable according to the charging cable parameter data.

[0086] The technical solution in the above embodiment of the present application has at least the following technical effects or advantages: obtaining diameter data and performing a primary qualification analysis on the new energy charging cable through the primary qualification analysis module, performing a cable performance test on the new energy charging cable that indicates primary qualification in the primary qualification analysis through the test module, obtaining charging cable parameter data by performing data acquisition on the cable performance test of the new energy charging cable through the data acquisition module, so as to analyze the performance qualification of the new energy charging cable according to the charging cable parameter data through the performance analysis module, thereby achieving accurate and efficient determination of the performance qualification of the new energy charging cable, and effectively solving the problem in the prior art that it is difficult to accurately and efficiently determine the performance qualification of the new energy charging cable.

[0087] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) that contain computer-usable program code.

[0088] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for realizing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0089] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means that realize the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0090] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for realizing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0091] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the present invention.

[0092] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A new energy charging cable intelligent testing system, characterized in that: include: Primary qualification analysis module, test module, data acquisition module and performance analysis module; Wherein, the primary qualification analysis module is used to obtain diameter data and perform primary qualification analysis on the new energy charging cable; The test module is used to perform a cable performance test on the new energy charging cable that is shown to be primary qualified in the primary qualified analysis; The data acquisition module is used to perform a cable performance test on the new energy charging cable to acquire data and obtain charging cable parameter data; The performance analysis module is used to analyze the performance qualification of the new energy charging cable according to the charging cable parameter data.

2. A new energy charging cable intelligent testing system as claimed in claim 1, characterized in that: The specific process of obtaining diameter data and performing primary qualification analysis on new energy charging cables is as follows: Obtain a new energy charging cable, evenly divide the new energy charging cable into N test points, obtain the diameter data at each test point, obtain the standard diameter data of the new energy charging cable, and compare each diameter data with the standard diameter data. When the diameter data is not equal to the standard diameter data for five or more times, it indicates that the new energy charging cable is unqualified; When in other situations, it means that the new energy charging cable is initially qualified.

3. A new energy charging cable intelligent testing system as claimed in claim 1, characterized in that: The performance qualification includes: the cable temperature change qualification, the cable breakdown characteristic qualification and the cable conductor resistance qualification; The specific analysis process of the cable temperature change qualification is as follows: Obtaining cable temperature change parameter data according to charging cable parameter data; Analyze the cable temperature change qualification evaluation index according to the cable temperature change parameter data, and the cable temperature change qualification evaluation index is used to reflect the qualification degree of the new energy charging cable in terms of temperature change; The cable temperature change qualification of the new energy charging cable is analyzed according to the cable temperature change qualification evaluation index.

4. A new energy charging cable intelligent testing system as claimed in claim 3, characterized in that: The specific analysis process of the qualified condition of the cable temperature change of the new energy charging cable is as follows: Obtain a cable temperature change qualification evaluation index, obtain a cable temperature change first threshold and a cable temperature change second threshold, compare the cable temperature change qualification evaluation index with the cable temperature change first threshold and the cable temperature change second threshold, when the cable temperature change qualification evaluation index is greater than the cable temperature change first threshold and less than the cable temperature change second threshold, it indicates that the cable temperature change qualification of the new energy charging cable is qualified; When in other situations, it means that the cable temperature change of the new energy charging cable is unqualified.

5. A new energy charging cable intelligent testing system as claimed in claim 3, characterized in that: The specific analysis process of the qualified condition of the cable breakdown characteristics is as follows: Obtaining cable breakdown characteristic parameter data according to charging cable parameter data; Analyze the cable breakdown characteristic qualification evaluation coefficient according to the cable breakdown characteristic parameter data, and the cable breakdown characteristic qualification evaluation coefficient is used to reflect the qualification degree of the new energy charging cable in terms of breakdown characteristics; The cable breakdown characteristics qualification status of the new energy charging cable is analyzed according to the cable breakdown characteristics qualification evaluation coefficient.

6. A new energy charging cable intelligent testing system as claimed in claim 5, characterized in that: The specific analysis process of the qualified condition of the cable breakdown characteristics of the new energy charging cable is as follows: Obtaining a cable breakdown characteristic qualification evaluation coefficient, obtaining a cable breakdown characteristic first threshold and a cable breakdown characteristic second threshold. When the cable breakdown characteristic qualification evaluation coefficient is greater than the cable breakdown characteristic first threshold and less than the cable breakdown characteristic second threshold, it indicates that the cable breakdown characteristic of the new energy charging cable is qualified. When in other situations, it means that the cable breakdown characteristics of the new energy charging cable are unqualified.

7. A new energy charging cable intelligent testing system as claimed in claim 3, characterized in that: The specific analysis process of the cable conductor resistance qualification is as follows: Obtain cable conductor resistance parameter data according to charging cable parameter data; Analyze the cable conductor resistance qualification evaluation index based on the cable conductor resistance parameter data, and the cable conductor resistance qualification evaluation index is used to reflect the qualification of the new energy charging cable in terms of conductor resistance; The cable conductor resistance qualification status of new energy charging cables is analyzed based on the cable conductor resistance qualification assessment index.

8. A new energy charging cable intelligent testing system as claimed in claim 7, characterized in that: The specific analysis process of the cable conductor resistance qualification of the new energy charging cable is as follows: Obtaining a cable conductor resistance qualification evaluation index, obtaining a cable conductor resistance first threshold value and a cable conductor resistance second threshold value. When the cable conductor resistance qualification evaluation index is greater than the cable conductor resistance first threshold value and less than the cable conductor resistance second threshold value, it indicates that the cable conductor resistance of the new energy charging cable is qualified. When in other situations, it means that the cable conductor resistance of the new energy charging cable is unqualified; The specific analysis process of the qualified performance of the new energy charging cable is as follows: Obtain the qualified status of the cable temperature change, cable breakdown characteristics and cable conductor resistance of the new energy charging cable. If one or more of the cable temperature change, cable breakdown characteristics and cable conductor resistance are unqualified, it means that the performance of the new energy charging cable is unqualified. When in other situations, it means that the performance of the new energy charging cable is qualified.

9. A new energy charging cable intelligent testing system as claimed in claim 3, characterized in that: The specific method for obtaining the cable temperature change qualification evaluation index is as follows: Obtain the number of new energy charging cables for cable performance testing and number the new energy charging cables; Acquire data from the new energy charging cable multiple times and number the data acquisition times; Obtaining from a database a weight ratio of a preset charging cable temperature during a first test duration, a preset charging cable temperature during a second test duration, and a preset charging cable temperature during a third test duration; Obtain cable temperature variation parameter data; Construct a calculation formula for evaluating the cable temperature change qualification index based on the cable temperature change parameter data; The specific cable temperature change qualification evaluation index calculation formula is: In the formula, It is the cable temperature change qualification evaluation index of the d0th new energy charging cable, d0 = 1, 2, ..., d, d0 is the number of the new energy charging cable, d is the total number of new energy charging cables, It represents the charging cable temperature of the d0th new energy charging cable at the first test duration when the s0th data is acquired, s0=1,2,...,s, s0 represents the number of data acquisition times, s represents the total number of data acquisition times, It is represented by the charging cable temperature of the d0th new energy charging cable at the second test duration when the s0th data is acquired, It is represented by the charging cable temperature of the d0th new energy charging cable at the third test time when the s0th data is acquired, It is represented by the standard value of the charging cable temperature under the first test duration of the d0th new energy charging cable, It is represented by the standard value of the charging cable temperature under the second test duration of the d0th new energy charging cable, W3 d0 It is expressed as the standard value of the charging cable temperature under the third test duration of the d0th new energy charging cable, W1 is expressed as the weight ratio of the charging cable temperature in the cable temperature change qualification evaluation index under the first test duration, W2 is expressed as the weight ratio of the charging cable temperature in the cable temperature change qualification evaluation index under the second test duration, and W3 is expressed as the weight ratio of the charging cable temperature in the cable temperature change qualification evaluation index under the third test duration.

10. A new energy charging cable intelligent testing method, characterized in that: The following steps are involved: Obtain diameter data and conduct preliminary qualification analysis of new energy charging cables; Conduct cable performance test on new energy charging cables that are shown as initially qualified in the initial qualification analysis; Conduct cable performance testing on new energy charging cables to obtain data and obtain charging cable parameter data; Analyze the performance status of new energy charging cables based on charging cable parameter data.

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