CN112051467A - Automatic testing method for energy storage high-voltage box product - Google Patents

Abstract

The invention discloses an automatic testing method for an energy storage high-voltage box product, and relates to the technical field of energy storage high-voltage box product testing. The automatic test method for the energy storage high-voltage box product comprises a hardware platform and a software test part, wherein the hardware platform comprises a constant current source unit, a constant voltage source unit, an internal resistance measurement unit, an alternating current/direct current withstand voltage test unit, a high-voltage control automatic switching unit, a power supply unit, a temperature detection unit, an AI/AO/DI/DO simulation analog signal output and detection unit, a low-voltage control automatic switching unit and a network communication and server unit; the software testing part comprises a testing upper computer and a testing CASE script, and solves the problems that the existing energy storage high-voltage box product is high in testing labor and economic cost, low in testing efficiency, high in testing difficulty and long in testing period time.

Description

An automatic test method for energy storage high-voltage box products

technical field

The invention relates to the technical field of energy storage high-voltage box product testing, in particular to an automated testing method for energy-storage high-voltage box products.

Background technique

The entire energy storage system is mainly composed of four parts: PCS system, battery system, management control system and background monitoring system. As the core component of the energy storage management and control system, the energy storage high-voltage box product is responsible for data analysis, management, control and communication interaction between the entire energy storage system. The reliability of the function and quality of the energy storage high-voltage box products is related to the safety and stability of the entire energy storage system.

The main components of energy storage high-voltage box products include CMU, acquisition sensor (voltage/current/leakage current/temperature), switch and operating mechanism (circuit breaker, contactor, electric operation), fuse, power supply part, thermal management part ( A management and control system for data acquisition, analysis, communication and management composed of a communication part plus a connecting wire harness and a connecting copper bar. The basic working principle is that the high-voltage box system obtains the battery voltage, charge and discharge current, temperature, insulation resistance and other parameters provided by the energy storage system acquisition unit through external communication interaction and internal sensor acquisition. The switch, operating mechanism and thermal management part act or maintain, so as to monitor and protect the operation of the energy storage system; at the same time, the high-voltage box system uploads these data to the background monitoring system of the energy storage system through external communication interaction, which is convenient for the background system to monitor the storage system. Real-time monitoring and management of system operating status.

As the core component of the energy storage management and control system, the energy storage high-voltage box product is responsible for data analysis, management, control and communication interaction between the entire energy storage system. The reliability of the function and quality of the energy storage high-voltage box products is related to the safety and stability of the entire energy storage system. After investigation, in the existing energy storage industry, most manufacturers have the following two methods for the delivery test of energy storage high-voltage box products:

(1) Rely on outsourcing various complete sets of equipment and test tools to manually simulate the test or build a test platform manually, and test the main functions of the energy storage high-voltage box products by simulating the operation of the on-site energy storage system.

(2) Preliminarily test the assembled energy storage high-voltage box products and place them inside the energy storage system, and rely on the energy storage system shipped on site to test the function and quality of the energy storage high-voltage box.

Although the above two methods can realize the functional test of energy storage high-voltage box products, there are the following problems and disadvantages:

(1) Manual simulation test or manual platform building test has low efficiency and high labor cost, which is not conducive to mass production and shipment of energy storage high-voltage box products. In addition, some functional tests of the energy storage high-voltage box are difficult or even impossible to achieve through manual platform and manual simulation. Therefore, this method still has the risk of incomplete test functions and unreal test results.

(2) Test the function and quality of the energy storage high-voltage box products by relying on the energy storage system shipped from the joint commissioning site. Although this method is real and effective, it can also be fully tested. However, for each test, the energy storage system for the joint test needs to be prepared in advance. During the test, it is necessary to screen and analyze the overall energy storage test data, and to eliminate the interference and faults caused by other product problems. Therefore, this method The test efficiency is low, the preparation time before the test and the disassembly time after the test are long, the technical requirements for the manufacturer's debugging personnel are high, the investment time and economic cost are high, so this method is not suitable for energy storage high-voltage box product testing. Economical, efficient and comprehensive , General basic concept.

SUMMARY OF THE INVENTION

(1) Technical problems solved

In view of the deficiencies of the prior art, the present invention provides an automatic testing method for energy storage high-voltage box products, which solves the problem that the existing energy-storage high-voltage box products have high labor and economic costs, low test efficiency and difficulty in testing. High, long test cycle time.

(2) Technical solutions

In order to achieve the above purpose, the present invention is achieved through the following technical solutions: an automated testing method for energy storage high-voltage box products, comprising a hardware platform and a software testing part, the hardware platform comprising a constant current source unit, a constant voltage source unit , internal resistance measurement unit, AC and DC withstand voltage test unit, high voltage control automatic switching unit, power supply unit, temperature detection unit, AI/AO/DI/DO simulation analog signal output and detection unit, low voltage control automatic switching unit and network communication and Server unit; The software testing part includes a test host computer and a test CASE script, the test host computer is composed of information collection, data analysis, communication interaction, function control and analysis judgment, and test result output parts, and the test CASE script is composed of Value, object, array, string, number part.

Preferably, the test host computer is composed of information collection, data analysis, communication interaction, function control and analysis and judgment, and test result output, and the test case is composed of value, object, array, character string, and number. It is characterized in that: in each test process, the test host computer sequentially calls the test CASE-1 to the test CASE-n (n≥1) according to the process, and after each call, the test result is judged and the test result is output, and then the next test is performed. .

Preferably, the test host computer provides a test case for the user to choose, each test case corresponds to a function of an energy storage high-voltage box product, and the test case is in a specific format according to the function and logic requirements of the energy-storage high-voltage box product To develop and write, the test CASE can cover all the shipping functions of the energy storage high-voltage tank products.

Preferably, the constant current source unit is composed of a program-controlled constant current source capable of remote communication; the constant voltage source unit is composed of a program-controlled constant voltage source capable of remote communication; the internal resistance measurement unit is composed of a program-controlled high voltage source capable of remote communication It is composed of a precision resistance tester; the AC and DC withstand voltage test unit is composed of a program-controlled high-precision AC and DC insulation withstand voltage instrument capable of remote communication; the high-voltage control automatic switching unit adopts a multi-channel high-voltage contactor, a low-voltage relay matrix and a multi-channel The DO control module is composed; the power supply unit is composed of a program-controlled AC-DC power supply that can communicate remotely; the temperature detection unit is composed of a temperature transmitter that can communicate remotely and a high-precision thermocouple; the AI/AO/DI/ The DO simulation analog signal output and detection unit is composed of four functional modules: AI, AO, DI and DO; the low-voltage control automatic switching unit is composed of a low-voltage relay matrix and a multi-channel DO control module; the network communication and server unit is composed of a network Communication server, industrial switch, gateway, CAN box, serial port server and other communication modules and network equipment; the software test part includes a test host computer and a test case; the test host computer is composed of information collection, data analysis, communication interaction, function It is composed of control and analysis judgment and test result output parts, and the test case is composed of value, object, array, character string, and number part.

Preferably, the hardware platform and the software testing part perform automatic testing on the energy storage high-voltage box product through the following steps:

The first step, when using the hardware platform to test the energy storage high-voltage box product, the test host computer calls the initialization platform CASE and completes the initialization of the high-voltage box and the high-voltage box test system according to the logic in the initialization platform CASE to ensure that the high-voltage box has been powered on normally. All functional modules and equipment inside the test platform have entered the ready state;

The second step is to use the hardware platform to test the function of the high-voltage part of the high-voltage box product. After calling the test CASE, the test host computer controls the high-voltage control automatic switching unit to switch to the corresponding high-voltage test loop according to the logic set in the test CASE, and controls the hardware platform. High voltage test unit output or measurement.

The third step, the measurement equipment in the high-voltage test unit of the hardware platform can directly read or collect the corresponding high-voltage box value, and then upload it to the test host computer through the network communication device, and analyze and compare the parameters set in the comprehensive test CASE. The corresponding test report and conclusion are obtained. The output device in the high-voltage test unit of the hardware platform can output the corresponding voltage and current values according to the test CASE settings to the high-voltage box for collection, and the functional modules inside the high-voltage box receive and collect the input voltage and current. After the value is determined, the state change and sampling value inside the high-voltage box are uploaded to the test host computer through the network communication device. Test reports and conclusions.

The fourth step is to use the hardware platform to test the function of the low-voltage part of the high-voltage box product. After calling the test CASE, the test host computer controls the low-voltage control automatic switching unit to switch to the corresponding low-voltage test loop according to the logic set in the test CASE, and controls the medium and low voltage of the hardware platform. The AO and DO simulation test unit of the test unit simulates the AO and DO signals required for the output test to collect or detect the low-voltage part of the energy storage high-voltage box. At the same time, the low-voltage part of the energy-storage high-voltage box can also output according to the output demand set in the test case. The corresponding AO and DO signals are detected by the AI and DI function modules in the automated test system.

Step 5. After the high-voltage box collects the AO/DO signal output by the hardware platform, it uploads its own state changes and converted data to the test host computer; at the same time, the AI and DI function modules in the automated test system detect the low-voltage of the high-voltage box. After part of the output AO/DO signal, the detected data will also be uploaded to the test host computer to test the input and output values of the host computer's integrated high-voltage box and the state change of the high-voltage box, and analyze it in combination with the logic setting requirements in the test case. Judgment, get the test result and output the corresponding test report.

The sixth step, the main function of the server simulation unit in the low-voltage test unit of the hardware platform is to provide BMU simulation data to the CMU inside the high-voltage box to collect, so as to judge whether the CMU and CAN communication circuit inside the high-voltage box are qualified; test the host computer according to the test CASE The control server simulation unit outputs the BMU simulation data for testing to the CMU inside the high-voltage box for collection, and at the same time uploads the state changes after the CMU collects the BMU data to the test host computer for analysis and judgment, and obtains the test results and outputs the corresponding test. Report.

Step 7. The main function of the temperature detection unit in the low-voltage test unit of the hardware platform is to provide a reference and comparison value for the accuracy of the ambient temperature acquisition and the pole temperature acquisition inside the high-pressure box; during the test, the temperature transmitter needs to be connected The thermocouple is placed inside the high pressure box, the temperature transmitter directly reads the temperature value collected by the thermocouple and uploads the collected data to the test host computer; at the same time, the test host computer reads the internal ambient temperature and pole temperature uploaded by the high pressure box, By comparing the upload value of the temperature transmitter with the upload value of the high pressure box and analyzing and judging in combination with the setting requirements in the test case, the test result is obtained and the corresponding test report is output.

The eighth step, the user sets and selects the corresponding test case for the loading test according to the actual shipping requirements of the energy storage high-voltage box product. After all parameters are set, the test host computer follows the one-button operation; at the same time, the developer can write the test case according to the The delay and test time are appropriately adjusted according to the urgency of the on-site delivery time.

The ninth step, after using the hardware platform to complete the full functional test of the high-voltage box, the test host computer automatically organizes and summarizes a final version of the test report according to the test data records, and uploads the test report to the cloud server through network communication and the server unit for supply. Background staff to view and download.

Preferably, the hardware platform test can be further divided into: high-voltage box high-voltage part test and high-voltage box low-voltage part test according to the test loop direction and voltage level, and the high-voltage box high-voltage part test includes the cluster voltage test of the high-voltage box, cluster current test Test, leakage current test, insulation resistance test, AC withstand voltage test, DC withstand voltage test, black start test, internal resistance test, opening and closing test, electrical operation function test.

Preferably, the cluster voltage test of the high-voltage box adopts the combination of the constant voltage source unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the cluster current test of the high-voltage box adopts the constant current source unit mentioned in the hardware platform. The combination of the high-voltage control automatic switching unit is completed; the leakage current test is completed by the combination of the AO simulation analog signal output unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the insulation resistance test uses the AC and DC mentioned in the hardware platform. The withstand voltage test unit and the high voltage control automatic switching unit are combined to complete; the AC withstand voltage test is completed by the combination of the AC and DC withstand voltage test unit and the high voltage control automatic switching unit mentioned in the hardware platform; the DC withstand voltage test is completed by using the hardware platform The combination of the AC and DC withstand voltage test unit and the high-voltage control automatic switching unit mentioned in is completed; the black-start test is completed by the combination of the constant voltage source unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the internal resistance test adopts The combination of the internal resistance measurement unit and the high-voltage control automatic switching unit mentioned in the hardware platform is completed; the opening and closing test is completed by the combination of the internal resistance measurement unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the electrical operation test is completed; It is completed by the combination of the internal resistance measurement unit and the high-voltage control automatic switching unit mentioned in the hardware platform.

Preferably, the test of the low-voltage part of the high-voltage box includes: the DI input test of the high-voltage box, the DO output test of the high-voltage box, the AI input test of the high-voltage box, the AO output test of the high-voltage box, the temperature consistency test and the CAN communication test; The DI input test of the high-voltage box is completed by the combination of the DO simulation analog signal output unit and the low-voltage control automatic switching unit mentioned in the hardware platform; the DO output test of the high-voltage box adopts the DI signal detection unit, low-voltage control unit mentioned in the hardware platform. The combination of the control automatic switching unit is completed; the AI input test of the high-voltage box is completed by the combination of the AO simulation analog signal output unit and the low-voltage control automatic switching unit mentioned in the hardware platform; the AO output test of the high-voltage box is completed by the hardware platform. The received AI signal detection unit and low-voltage control automatic switching unit are combined and completed; the temperature consistency test of the high-voltage box is completed by using the temperature detection unit mentioned in the hardware platform; the CAN communication test of the high-voltage box is completed by using the hardware platform mentioned in the test. The network communication and server unit are completed.

beneficial effect

The invention provides an automatic testing method for energy storage high-voltage box products. Has the following beneficial effects:

(1) This automatic test method for energy storage high-voltage box products can read and record real test data in real time through the whole process, automatically filter out the test items that fail, and automatically record and summarize the output according to the test data. It is convincing It can ensure the authenticity and reliability of the test report, improve the quality control management, and ensure the quality of the shipment. The method of the invention is simple to operate and requires that the test host computer can set function keys such as one-key test, loop test, pause/continue test and the like according to test requirements. Therefore, the technical requirements for operators are low, the test workload is small and simple, and ordinary production workers can operate according to the test process and operation instructions.

(2) The automatic test method for energy storage high-voltage box products has a high degree of automation and can realize cyclic testing. No manual participation is required after the test is started, and the test data and results can be automatically recorded and exported, and the test report can be automatically output, thereby Liberate human resources, save labor costs, and improve test efficiency. The method of the invention can edit corresponding test CASE scripts according to different test items and requirements, and the test CASE scripts can comprehensively cover various functions and protection control logics of energy storage high-voltage box products, thereby realizing the diversification of test functions. After the test of the method of the present invention is completed, the test host computer automatically uploads the test report and test data to the cloud server through network communication and the server unit, so that the whole test process can be monitored and managed, which is convenient for testers to analyze the test data and improve the test method and product quality. .

Description of drawings

Fig. 1 is the principle diagram of the energy storage high-voltage box product system of the present invention;

2 is a schematic diagram of a hardware platform of the present invention;

Fig. 3 is the hardware platform network diagram of the present invention;

Fig. 4 is the test logic diagram of utilizing the hardware platform provided by the present invention to test the initialization function of the energy storage high-voltage box product;

5, 6, 7, 8, and 9 are test logic diagrams for testing the high-voltage part of the energy storage high-voltage box product using the hardware platform provided by the present invention;

10, 11, 12, and 13 are test logic diagrams for testing the low-voltage part of the energy storage high-voltage box product using the hardware platform provided by the present invention;

Fig. 14 is a flow chart of the automated testing process of the present invention;

FIG. 15 is a flow chart of the practical application test of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-15, the present invention provides a technical solution: an automatic testing method for energy storage high-voltage box products, including a hardware platform and a software testing part, the hardware platform includes a constant current source unit, a constant voltage source unit, Internal resistance measurement unit, AC and DC withstand voltage test unit, high voltage control automatic switching unit, power supply unit, temperature detection unit, AI/AO/DI/DO simulation analog signal output and detection unit, low voltage control automatic switching unit and network communication and server Unit; the software test part includes the test host computer and the test case script. The test host computer is composed of information collection, data analysis, communication interaction, function control and analysis and judgment, and test result output. The test case script is composed of values, objects, arrays, characters String and numeric parts.

In this embodiment, the test host computer is composed of information collection, data analysis, communication interaction, function control and analysis and judgment, and test result output parts, and the test case is composed of value, object, array, character string, and number. : In each test process, the test host computer sequentially calls the test CASE-1 to the test CASE-n (n≥1) according to the process. After each call, the test result is judged and the test result is output, and then the next test is performed.

In this embodiment, the test host computer provides test cases for the user to choose, each test case corresponds to a function of the energy storage high-voltage box product, and the test case is developed and written in a specific format according to the function and logic requirements of the energy-storage high-voltage box product , the test CASE can cover all the shipping functions of the energy storage high-voltage box products.

In this embodiment, the constant current source unit is composed of a program-controlled constant current source capable of remote communication; the constant voltage source unit is composed of a program-controlled constant voltage source capable of remote communication; the internal resistance measurement unit is composed of a program-controlled high-precision resistance tester capable of remote communication Composition; AC and DC withstand voltage test unit is composed of program-controlled high-precision AC and DC insulation withstand voltage instrument with remote communication; high-voltage control automatic switching unit is composed of multi-channel high-voltage contactor, low-voltage relay matrix and multi-channel DO control module; power supply unit adopts It is composed of a program-controlled AC-DC power supply that can communicate remotely; the temperature detection unit is composed of a temperature transmitter that can communicate remotely and a high-precision thermocouple; the AI/AO/DI/DO simulation analog signal output and detection unit is composed of AI, AO, DI It is composed of four functional modules with DO; the low-voltage control automatic switching unit is composed of low-voltage relay matrix and multi-channel DO control modules; the network communication and server unit is composed of network communication server, industrial switch, gateway, CAN box, serial port server and other communication modules and network Equipment composition; software test part includes test host computer and test case; test host computer is composed of information collection, data analysis, communication interaction, function control and analysis judgment, test result output part, test case is composed of value, object, array, string , the digital part.

In this embodiment, the hardware platform and the software testing part perform automatic testing on the energy storage high-voltage box product through the following steps:

The first step, when using the hardware platform to test the energy storage high-voltage box product, the test host computer calls the initialization platform CASE and completes the initialization of the high-voltage box and the high-voltage box test system according to the logic in the initialization platform CASE to ensure that the high-voltage box has been powered on normally. All functional modules and equipment inside the test platform have entered the ready state;

The second step is to use the hardware platform to test the function of the high-voltage part of the high-voltage box product. After calling the test CASE, the test host computer controls the high-voltage control automatic switching unit to switch to the corresponding high-voltage test loop according to the logic set in the test CASE, and controls the hardware platform. High voltage test unit output or measurement.

The third step, the measurement equipment in the high-voltage test unit of the hardware platform can directly read or collect the corresponding high-voltage box value, and then upload it to the test host computer through the network communication device, and analyze and compare the parameters set in the comprehensive test CASE. The corresponding test report and conclusion are obtained. The output device in the high-voltage test unit of the hardware platform can output the corresponding voltage and current values according to the test CASE settings to the high-voltage box for collection, and the functional modules inside the high-voltage box receive and collect the input voltage and current. After the value is determined, the state change and sampling value inside the high-voltage box are uploaded to the test host computer through the network communication device. Test reports and conclusions.

The fourth step is to use the hardware platform to test the function of the low-voltage part of the high-voltage box product. After calling the test CASE, the test host computer controls the low-voltage control automatic switching unit to switch to the corresponding low-voltage test loop according to the logic set in the test CASE, and controls the medium and low voltage of the hardware platform. The AO and DO simulation test unit of the test unit simulates the AO and DO signals required for the output test to collect or detect the low-voltage part of the energy storage high-voltage box. At the same time, the low-voltage part of the energy-storage high-voltage box can also output according to the output demand set in the test case. The corresponding AO and DO signals are detected by the AI and DI function modules in the automated test system.

Step 5. After the high-voltage box collects the AO/DO signal output by the hardware platform, it uploads its own state changes and converted data to the test host computer; at the same time, the AI and DI function modules in the automated test system detect the low-voltage of the high-voltage box. After part of the output AO/DO signal, the detected data will also be uploaded to the test host computer to test the input and output values of the host computer's integrated high-voltage box and the state change of the high-voltage box, and analyze it in combination with the logic setting requirements in the test case. Judgment, get the test result and output the corresponding test report.

The sixth step, the main function of the server simulation unit in the low-voltage test unit of the hardware platform is to provide BMU simulation data to the CMU inside the high-voltage box to collect, so as to judge whether the CMU and CAN communication circuit inside the high-voltage box are qualified; test the host computer according to the test CASE The control server simulation unit outputs the BMU simulation data for testing to the CMU inside the high-voltage box for collection, and at the same time uploads the state changes after the CMU collects the BMU data to the test host computer for analysis and judgment, and obtains the test results and outputs the corresponding test. Report.

Step 7. The main function of the temperature detection unit in the low-voltage test unit of the hardware platform is to provide a reference and comparison value for the accuracy of the ambient temperature acquisition and the pole temperature acquisition inside the high-pressure box; during the test, the temperature transmitter needs to be connected The thermocouple is placed inside the high pressure box, the temperature transmitter directly reads the temperature value collected by the thermocouple and uploads the collected data to the test host computer; at the same time, the test host computer reads the internal ambient temperature and pole temperature uploaded by the high pressure box, By comparing the upload value of the temperature transmitter with the upload value of the high pressure box and analyzing and judging in combination with the setting requirements in the test case, the test result is obtained and the corresponding test report is output.

The eighth step, the user sets and selects the corresponding test case for the loading test according to the actual shipping requirements of the energy storage high-voltage box product. After all parameters are set, the test host computer follows the one-button operation; at the same time, the developer can write the test case according to the The delay and test time are appropriately adjusted according to the urgency of the on-site delivery time.

The ninth step, after using the hardware platform to complete the full functional test of the high-voltage box, the test host computer automatically organizes and summarizes a final version of the test report according to the test data records, and uploads the test report to the cloud server through network communication and the server unit for supply. Background staff to view and download.

In this embodiment, the hardware platform test can be further divided into: high-voltage box high-voltage part test, high-voltage box low-voltage part test, and high-voltage box high-voltage part test according to the direction of the test loop and the voltage level. Leakage current test, insulation resistance test, AC withstand voltage test, DC withstand voltage test, black start test, internal resistance test, opening and closing test, electrical operation function test.

In this embodiment, the cluster voltage test of the high-voltage box is completed by the combination of the constant voltage source unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the cluster current test of the high-voltage box adopts the constant current source unit, high voltage The combination of the control automatic switching unit is completed; the leakage current test is completed by the combination of the AO simulation analog signal output unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the insulation resistance test is completed by using the AC and DC withstand voltage test unit, high voltage The combination of the control automatic switching unit is completed; the AC withstand voltage test is completed by the combination of the AC and DC withstand voltage test unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the DC withstand voltage test is completed by using the AC and DC withstand voltage test unit mentioned in the hardware platform. The combination of the high-voltage control automatic switching unit is completed; the black-start test is completed by the combination of the constant voltage source unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the internal resistance test uses the internal resistance measurement unit mentioned in the hardware platform, and the high-voltage control automatic The combination of the switching unit is completed; the opening and closing test is completed by the combination of the internal resistance measurement unit and the high-voltage control automatic switching unit mentioned in the hardware platform; the electrical operation test is completed by using the combination of the internal resistance measurement unit and the high-voltage control automatic switching unit mentioned in the hardware platform Finish.

In this embodiment, the low-voltage part test of the high-voltage box includes: the DI input test of the high-voltage box, the DO output test of the high-voltage box, the AI input test of the high-voltage box, the AO output test of the high-voltage box, the temperature consistency test and the CAN communication test; The DI input test of the box is completed by the combination of the DO simulation analog signal output unit and the low-voltage control automatic switching unit mentioned in the hardware platform; the DO output test of the high-voltage box adopts the DI signal detection unit and the low-voltage control automatic switching unit mentioned in the hardware platform. The combination is completed; the AI input test of the high-voltage box adopts the combination of the AO simulation analog signal output unit and the low-voltage control automatic switching unit mentioned in the hardware platform; the AO output test of the high-voltage box adopts the AI signal detection unit mentioned in the hardware platform, the low-voltage control unit The combination of control and automatic switching units is completed; the temperature consistency test of the high-voltage box is completed by the temperature detection unit mentioned in the hardware platform; the CAN communication test of the high-voltage box is completed by the network communication and server unit mentioned in the hardware platform.

During operation, the automatic testing platform provided by the method of the present invention is divided into automatic testing of high-voltage parts and automatic testing of low-voltage parts.

After the automatic test of the high-voltage part is started, the test host computer controls the automatic test platform to perform the automatic switching test of high and low voltage according to the setting logic in the test CASE, and after successfully switching to the high-voltage part test; The high-voltage test unit of the fixed-parameter control automatic test platform simulates and outputs the high-voltage test signal value for the energy storage high-voltage box to collect or detect, and reads or measures the state change and function sampling value inside the energy-storage high-voltage box, and integrates the output set by the test unit. Value, sample value of energy storage high-voltage tank, internal state change of energy storage high-voltage tank, energy storage high-voltage tank logic and parameter setting requirements to analyze and judge, and draw corresponding test reports and conclusions.

After the automatic test of the low-voltage part is started, the test host computer controls the automatic test platform to perform the automatic switching test of high and low voltage according to the setting logic in the test CASE, and after successfully switching to the low-voltage part test; The low-voltage simulation test unit of the fixed-parameter control automatic test platform simulates the output of the AO and DO signals required for the test to collect or detect the low-voltage part of the energy storage high-voltage box. At the same time, the state changes inside the energy storage high-voltage box and the converted data display are collected, and the input and output values of the energy storage high-voltage box, as well as the logic and parameter setting requirements of the energy storage high-voltage box are analyzed and judged, and the corresponding test report is obtained. and conclusions.

Finally, the test upper computer integrates all the test CASE results of the high-voltage part and the low-voltage part, automatically filters out the test items that fail, and automatically records and summarizes the test report according to the test data and outputs a convincing test report. After the test is completed, the test host computer uploads the test report and test data record to the designated cloud server through the network communication and server unit that comes with the platform for the background personnel to view and download.

Take the energy storage high-voltage tank platform initialization test as an example, as shown in Figure 4 in the accompanying drawings. When testing the initialization logic of the energy storage high-voltage box platform, the test host computer controls the energy storage high-voltage box to enter the initialization according to the edited test CASE, and the circuit breaker and contactor inside the test energy storage high-voltage box can be switched from the off position to the open position according to the logic command. Closed, the CMU inside the test energy storage high-voltage box can be started with constant power, and it is in a state of no alarm and no protection under normal BMU data simulation; at the same time, the test host computer controls the energy storage high-voltage box product according to the edited test case. Automatic test The system platform equipment enters the initialization, the simulation test equipment in the test automation test system platform can switch from other states to the initialization state according to the logic command, and the high and low voltage control switching part in the test automation test system platform can realize the high and low voltage control switching according to the logic command, and the test automation test The server-side equipment part in the system platform can realize the initialization of the server-side data simulation input according to the logic instruction. If the above equipment can automatically enter the initialization state according to the logic requirements set in the test CASE, the energy storage high-voltage box platform initialization test is qualified. If more than one item of the above equipment fails to enter the initialization state according to the logic requirements set in the test CASE, this test is not qualified. After the whole process test is completed, the test host computer automatically outputs the corresponding test report and test data for the tester to analyze whether the function is invalid. In the same way, when testing other functions of the energy storage high-voltage box product, the test host computer also automatically completes the whole process test according to the edited test CASE control corresponding module/unit output or detection simulation data, as shown in Figure 5- 9 and Figures 10-13.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. without more restrictions. An element defined by the phrase "comprising an... does not preclude the presence of additional identical elements in a process, method, article or apparatus comprising said element".

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. An automatic test method for energy storage high-voltage box products comprises a hardware platform and a software test part, and is characterized in that: the hardware platform comprises a constant current source unit, a constant voltage source unit, an internal resistance measuring unit, an alternating current/direct current withstand voltage testing unit, a high-voltage control automatic switching unit, a power supply unit, a temperature detection unit, an AI/AO/DI/DO simulation signal output and detection unit, a low-voltage control automatic switching unit and a network communication and server unit; the software testing part comprises a testing upper computer and a testing CASE script, wherein the testing upper computer comprises an information acquisition part, a data analysis part, a communication interaction part, a function control and analysis judgment part and a testing result output part, and the testing CASE script comprises a value part, an object part, an array part, a character string part and a digital part.

2. The automated testing method for energy storage high-pressure tank products according to claim 1, characterized in that: the test upper computer comprises an information acquisition part, a data analysis part, a communication interaction part, a function control part, an analysis judgment part and a test result output part, wherein the test CASE comprises a value part, an object part, an array part, a character string part and a digital part, and is characterized in that: in each test process, the test upper computer calls a test CASE-1 to a test CASE-n (n is larger than or equal to 1) in sequence according to the flow, judges the test result after each call and outputs the test result, and then carries out the next test.

3. The automated testing method for energy storage high-pressure tank products according to claim 2, characterized in that: the testing upper computer provides testing CASE for a user to select, each testing CASE corresponds to one energy storage high-voltage box product function, the testing CASE is developed and compiled according to the functions and logic requirements of the energy storage high-voltage box products and according to a specific format, and the testing CASE can cover all shipment functions of the energy storage high-voltage box products.

4. The automated testing method for energy storage high-pressure tank products according to claim 3, characterized in that: the constant current source unit is composed of a program-controlled constant current source capable of realizing remote communication; the constant voltage source unit is composed of a program-controlled constant voltage source capable of realizing remote communication; the internal resistance measuring unit is composed of a program-controlled high-precision resistance tester capable of realizing remote communication; the alternating current-direct current voltage withstand test unit is composed of a program-controlled high-precision alternating current-direct current insulation voltage withstand instrument capable of realizing remote communication; the high-voltage control automatic switching unit is composed of a plurality of paths of high-voltage contactors, a low-voltage relay matrix and a plurality of paths of DO control modules; the power supply unit is composed of a program-controlled AC-DC power supply capable of realizing remote communication; the temperature detection unit is composed of a temperature transmitter capable of realizing remote communication and a high-precision thermocouple; the AI/AO/DI/DO simulation signal output and detection unit consists of four functional modules of AI, AO, DI and DO; the low-voltage control automatic switching unit is composed of a low-voltage relay matrix and a plurality of DO control modules; the network communication and server unit consists of a network communication server, an industrial switch, a gateway, a CAN box, a serial server and other communication modules and network equipment; the software testing part comprises a testing upper computer and a testing CASE; the testing upper computer consists of an information acquisition part, a data analysis part, a communication interaction part, a function control part, an analysis judgment part and a testing result output part, and the testing CASE consists of a value part, an object part, an array part, a character string part and a number part.

5. The automated testing method for energy storage high-pressure tank products according to claim 4, characterized in that: the hardware platform and the software testing part automatically test the energy storage high-pressure box product through the following steps:

firstly, when a hardware platform is used for testing an energy storage high-voltage box product, a testing upper computer calls an initialization platform CASE and completes the initialization of a high-voltage box and a high-voltage box testing system according to logic in the initialization platform CASE, so that the high-voltage box is ensured to be normally powered on and run, and all functional modules and equipment in an automatic testing platform are ensured to be in a ready state;

and secondly, when the hardware platform is used for testing the high-voltage part function of the high-voltage box product, the testing upper computer calls the testing CASE and then controls the high-voltage control automatic switching unit to switch into a corresponding high-voltage testing loop according to the set logic in the testing CASE, and meanwhile, the high-voltage testing unit in the hardware platform is controlled to output or measure.

And thirdly, a measuring device in the hardware platform high-voltage testing unit can directly read or collect corresponding high-voltage box numerical values and then upload the numerical values to a testing upper computer through network communication equipment, parameters set in the comprehensive testing CASE are analyzed and compared to obtain corresponding testing reports and conclusions, an output device in the hardware platform high-voltage testing unit can output corresponding voltage and current values to the high-voltage box for collection according to the setting of the testing CASE, a function module in the high-voltage box receives and collects the input voltage and current values and then uploads state changes and sampling values in the high-voltage box to the testing upper computer through the network communication equipment, and the testing upper computer performs analysis and judgment by combining testing set values, sampling values of the high-voltage box and state changes of the high-voltage box to obtain corresponding testing reports and conclusions.

And fourthly, when the hardware platform is used for testing the functions of the low-voltage part of the high-voltage box product, the testing upper computer calls the testing CASE and then controls the low-voltage control automatic switching unit to be switched into a corresponding low-voltage testing loop according to the set logic in the testing CASE, and controls the AO and DO simulation testing units of the low-voltage testing unit in the hardware platform to simulate and output AO and DO signals required by the test to the low-voltage part of the energy storage high-voltage box for collection or detection, and meanwhile, the low-voltage part of the energy storage high-voltage box can also output the AO and DO signals corresponding to the output requirements set in the testing CASE to be detected by an AI and DI function modules in the automatic testing system.

Fifthly, the high-voltage box acquires the AO/DO signal output by the hardware platform and then uploads the state change of the high-voltage box and the converted data to a test upper computer; meanwhile, an AI and DI functional module in the automatic test system uploads detected data to a test upper computer after detecting an AO/DO signal output by a low-pressure part of the high-pressure box, and the test upper computer integrates input and output values of the high-pressure box and self-state change of the high-pressure box and analyzes and judges according to logic setting requirements in a test CASE to obtain a test result and output a corresponding test report.

Sixthly, a server simulation unit in the hardware platform low-voltage test unit mainly has the function of providing BMU simulation data for CMU acquisition in the high-voltage box so as to judge whether the CMU and the CAN communication loop in the high-voltage box are qualified or not; the testing upper computer outputs BMU simulation data for testing to a CMU in the high-voltage box for collection according to the testing CASE control server simulation unit, and meanwhile, the state change after the BMU data are collected by the CMU is uploaded to the testing upper computer for analysis and judgment, so that a testing result is obtained, and a corresponding testing report is output.

Seventhly, the temperature detection unit in the low-voltage testing unit of the hardware platform mainly has the function of providing a reference and comparison value for the accuracy of the environment temperature collection and the pole temperature collection in the high-voltage box; during testing, a thermocouple connected with a temperature transmitter is required to be arranged in a high-pressure box, and the temperature transmitter directly reads a temperature value acquired by the thermocouple and uploads the acquired data to a testing upper computer; and simultaneously, the upper test computer reads the internal environment temperature and the pole temperature uploaded by the high-voltage box, and compares the uploaded value of the temperature transmitter with the uploaded value of the high-voltage box and analyzes and judges the uploaded values by combining the set requirements in the CASE test to obtain a test result and output a corresponding test report.

Eighthly, setting and selecting a corresponding test CASE for a loading test by a user according to the actual delivery requirement of the energy storage high-voltage box product, and after all parameters are set, enabling the test upper computer to follow one-key operation; meanwhile, when a developer writes a test CASE, the delay and the test time can be properly adjusted according to the emergency degree of the field delivery time.

And ninthly, after the hardware platform is used for completing all functional tests of the high-voltage box, the test upper computer automatically arranges and summarizes a test report of a final version according to the test data record, and uploads the test report to the cloud server through the network communication and server unit for background personnel to check and download.

6. The automated testing method for energy storage high-pressure tank products according to claim 5, characterized in that: the hardware platform can be divided into the following parts according to the trend of a test loop and the voltage grade during testing: the high-voltage box high-voltage part test comprises a high-voltage box high-voltage part test and a high-voltage box low-voltage part test, wherein the high-voltage box high-voltage part test comprises a high-voltage box cluster voltage test, a cluster current test, a leakage current test, an insulation resistance test, an alternating current withstand voltage test, a direct current withstand voltage test, a black start test, an internal resistance test, a switching-on and switching-off test and an electric operation function test.

7. The automated testing method for energy storage high-pressure tank products according to claim 6, characterized in that: the cluster voltage test of the high-voltage box is completed by combining a constant-voltage source unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the cluster current test of the high-voltage box is completed by combining a constant current source unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the leakage current test is completed by combining an AO analog signal output unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the insulation resistance test is completed by combining an alternating current/direct current withstand voltage test unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the alternating current voltage withstand test is completed by combining an alternating current/direct current voltage withstand test unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the direct-current voltage withstand test is completed by combining an alternating-current/direct-current voltage withstand test unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the black start test is completed by combining a constant voltage source unit and a high voltage control automatic switching unit mentioned in a hardware platform; the internal resistance test is completed by combining an internal resistance measuring unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform; the opening and closing test is completed by combining an internal resistance measuring unit and a high-voltage control automatic switching unit mentioned in a hardware platform; the electric operation test is completed by combining an internal resistance measuring unit and a high-voltage control automatic switching unit which are mentioned in a hardware platform.

8. The automated testing method for energy storage high-pressure tank products according to claim 7, characterized in that: the high-pressure box low-pressure part test comprises the following steps: the method comprises the following steps of DI input test of a high-voltage box, DO output test of the high-voltage box, AI input test of the high-voltage box, AO output test of the high-voltage box, temperature consistency test and CAN communication test; the DI input test of the high-voltage box is completed by combining a DO simulation signal output unit and a low-voltage control automatic switching unit which are mentioned in a hardware platform; the DO output test of the high-voltage box is completed by combining a DI signal detection unit and a low-voltage control automatic switching unit which are mentioned in a hardware platform; the AI input test of the high-voltage box is completed by combining an AO analog signal output unit and a low-voltage control automatic switching unit which are mentioned in a hardware platform; the AO output test of the high-voltage box is completed by combining an AI signal detection unit and a low-voltage control automatic switching unit which are mentioned in a hardware platform; the temperature consistency test of the high-pressure box is completed by adopting a temperature detection unit mentioned in a hardware platform; the CAN communication test of the high-voltage box is completed by adopting a network communication and server unit mentioned in a hardware platform.

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