CN112051467A - Automatic testing method for energy storage high-voltage box product - Google Patents
Automatic testing method for energy storage high-voltage box product Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
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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
Technical Field
The invention relates to the technical field of energy storage high-voltage box product testing, in particular to an automatic testing method for an energy storage high-voltage box product.
Background
The whole energy storage system mainly comprises a PCS system, a battery system, a management control system and a background monitoring system. The energy storage high-voltage box product is used as a core component of an energy storage management control system and is responsible for data analysis, management, control and communication interaction among the whole energy storage systems. The reliability of the function and the quality of the energy storage high-voltage box product is concerned about the safety and the stability of the whole energy storage system.
The energy storage high-voltage box product mainly comprises a CMU, an acquisition sensor (voltage/current/leakage current/temperature), a switch and operating mechanism (a circuit breaker, a contactor and an electric operator), a fuse, a power supply part, a heat management part (a fan and an air conditioner), and a management control system for data acquisition, analysis, communication and management, wherein the management control system is formed by adding a connecting wire harness and connecting copper bars to a communication part. The high-voltage box system obtains parameters such as battery voltage, charging and discharging current, temperature, insulation resistance and the like provided by an energy storage system acquisition unit through external communication interaction and an internal sensor acquisition mode, and controls an internal switch, an operating mechanism and a heat management part to act or maintain after the internal CMU performs summary analysis, so that the operation of the energy storage system is monitored and protected; meanwhile, the high-voltage box system uploads the data to a background monitoring system of the energy storage system through external communication interaction, so that the background system can conveniently monitor and manage the running state of the energy storage system in real time.
The energy storage high-voltage box product is used as a core component of an energy storage management control system and is responsible for data analysis, management, control and communication interaction among the whole energy storage systems. The reliability of the function and the quality of the energy storage high-voltage box product is concerned about the safety and the stability of the whole energy storage system. Through investigation, in the existing energy storage industry, the following two methods are mainly used for the shipment test of energy storage high-voltage box products of most manufacturers:
(1) the main functions of the energy storage high-voltage box product are tested by manually simulating the test or manually building a test platform by purchasing various complete equipment and test tools and simulating the operation of the on-site energy storage system.
(2) The assembled energy storage high-voltage box product is preliminarily detected and then placed in an energy storage system, and the function and the quality of the energy storage high-voltage box are tested by the energy storage system for joint debugging on-site shipment.
Although the above two methods can achieve the function test of the energy storage high-voltage box product, the following problems and disadvantages exist:
(1) manual simulation test or manual work build platform efficiency of software testing low, the cost of labor is high, is unfavorable for the batch production shipment of energy storage high-voltage box product. And partial function test of the energy storage high-voltage box is realized through a manual platform and manual simulation, and difficulty and even incapability of realizing the partial function test, so the method also has the risks of incomplete test function and unreal test result.
(2) The function and the quality of the energy storage high-voltage box product are tested by means of the energy storage system for joint debugging on-site shipment, and the method is real and effective and can also be comprehensively tested. However, the energy storage system for the joint debugging test needs to be prepared in advance during each test, screening and analysis need to be carried out according to the integral energy storage test data in the test process, and interference and faults caused by other product problems are eliminated.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an automatic testing method for an energy storage high-voltage box product, and solves the problems of low testing efficiency, high testing difficulty and long testing period time of the existing energy storage high-voltage box product testing with high labor and economic cost.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an automatic test method for energy storage high-voltage box products 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 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.
Preferably, the test upper computer comprises information acquisition, data analysis, communication interaction, function control, analysis and judgment and a test result output part, the test CASE comprises a value, an object, an array, a character string 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.
Preferably, the testing upper computer provides testing CASE for a user to select, each testing CASE corresponds to the function of one energy storage high-voltage box product, the testing CASE is developed and compiled according to the function and logic requirements of the energy storage high-voltage box product and a specific format, and the testing CASE can cover all shipment functions of the energy storage high-voltage box product.
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 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.
Preferably, the hardware platform and the software testing part automatically test the energy storage high-pressure tank product by 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.
Preferably, the hardware platform may be further divided into according to a test loop trend and a voltage class 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.
Preferably, 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 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.
Preferably, the high pressure tank low pressure part test comprises: 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.
Advantageous effects
The invention provides an automatic testing method for an energy storage high-voltage box product. The method has the following beneficial effects:
(1) according to the automatic testing method for the energy storage high-voltage box product, real testing data are read and recorded in real time through the whole process, the test items which do not pass through are automatically screened out, the convincing test reports are automatically sorted and summarized according to the testing data records, manual participation and modification are reduced, the authenticity and the reliability of the test reports can be ensured, quality control management is improved, and the shipment quality is guaranteed. The method is simple to operate, and the test upper computer is required to set functional keys such as one-key test, cycle test, pause/continuous test and the like according to the test requirements. Therefore, the technical requirements on operators are low, the test workload is small and simple, and common production workers can operate according to the test flow and the operation guidance.
(2) The automatic test method for the energy storage high-voltage box product is high in automation degree and capable of achieving circular test, manual participation is not needed after the test is started, test data and results can be automatically recorded and derived, test reports are automatically output, accordingly, human resources are liberated, labor cost is saved, and test efficiency is improved. The method can edit the corresponding test CASE script according to different test items and requirements, and the test CASE script can comprehensively cover various functions and protection control logic of the energy storage high-voltage box product, thereby realizing the diversification of test functions. After the test is finished, the test upper computer automatically uploads the test report and the test data to the cloud server through the network communication and server unit, so that the whole test process can be monitored and managed, testers can analyze the test data conveniently, and the test method and the product quality are improved.
Drawings
FIG. 1 is a schematic diagram of an energy storage high-voltage tank product system of the invention;
FIG. 2 is a schematic diagram of a hardware platform of the present invention;
FIG. 3 is a network diagram of a hardware platform according to the present invention;
FIG. 4 is a logic diagram for testing the initialization function of the energy storage high-voltage tank product by using the hardware platform provided by the invention;
5, 6, 7, 8 and 9 are logic diagrams for testing the high-voltage part of the energy storage high-voltage box product by using the hardware platform provided by the invention;
10, 11, 12, 13 are logic diagrams for testing the low-voltage part of the energy storage high-voltage box product by using the hardware platform provided by the invention;
FIG. 14 is a block diagram of an automated test process flow of the present invention;
FIG. 15 is a flow chart of the practical application test of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-15, the present invention provides a technical solution: an automatic test method for energy storage high-voltage box products 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, wherein the testing upper computer consists of 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 consists of a value part, an object part, an array part, a character string part and a digital part.
In this embodiment, the testing upper computer comprises information acquisition, data analysis, communication interaction, function control, analysis and judgment, and a testing result output part, and the testing CASE comprises a value, an object, an array, a character string, 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.
In the embodiment, the testing upper computer provides the testing CASE for the 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 function and logic requirements of the energy storage high-voltage box product and a specific format, and the testing CASE can cover all shipment functions of the energy storage high-voltage box product.
In the embodiment, 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 upper test 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 test result output part, and the CASE test consists of a value part, an object part, an array part, a character string part and a number part.
In this embodiment, the hardware platform and the software testing part automatically test the energy storage high-voltage box product by 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.
In this embodiment, the hardware platform may be further divided into according to the trend of the test loop and the voltage level 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.
In the embodiment, the cluster voltage test of the high-voltage box is completed by combining 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 is completed by combining a constant current source unit and a high-voltage control automatic switching unit 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 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 mentioned in a hardware platform; the opening and closing tests are 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 mentioned in a hardware platform.
In this embodiment, the test of the low pressure part of the high pressure tank includes: 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 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 mentioned in a hardware platform; the temperature consistency test of the high-pressure tank 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 the network communication and server unit mentioned in the hardware platform.
When the automatic test platform works, the automatic test platform provided by the method is divided into a high-voltage part automatic test and a low-voltage part automatic test.
After the high-voltage part automatic test is started, the test upper computer controls the automatic test platform to perform high-voltage and low-voltage automatic switching test according to set logic in the test CASE, and the test upper computer is successfully switched to the high-voltage part test; the testing upper computer controls a high-voltage testing unit of the automatic testing platform to output a high-voltage testing signal value to the energy storage high-voltage box for collection or detection according to set logic and set parameters in the testing CASE in a simulation mode, simultaneously reads or measures state change and functional sampling values in the energy storage high-voltage box, analyzes and judges the output value, the sampling value of the energy storage high-voltage box, the state change in the energy storage high-voltage box, the logic of the energy storage high-voltage box and the parameter setting requirements set by the comprehensive testing unit, and obtains corresponding testing reports and conclusions.
After the automatic test of the low-voltage part is started, the test upper computer controls the automatic test platform to perform high-low voltage automatic switching test according to the set logic in the test CASE, and the test upper computer is successfully switched to the low-voltage part for testing; and the test upper computer controls a low-voltage simulation test unit of the automatic test platform to simulate and output AO and DO signals required by the test to a low-voltage part of the energy storage high-voltage box for collection or detection according to set logic and set parameters in the test CASE. And meanwhile, the state change in the energy storage high-voltage box and the converted data display are collected, and the input value and the output value of the energy storage high-voltage box and the logic and parameter setting requirements of the energy storage high-voltage box are synthesized to carry out analysis and judgment so as to obtain a corresponding test report and a corresponding conclusion.
And finally, the upper computer is tested to synthesize all the testing CASE results of the high-voltage part and the low-voltage part, automatically screen out the test items which do not pass, and automatically arrange and summarize according to the test data records to output a convincing test report. After the test is finished, the test upper computer uploads the test report and the test data record to a designated cloud server through network communication and a server unit of the platform for background personnel to check and download.
Taking the initialization test of the energy storage high-voltage box platform as an example, as shown in fig. 4 of the accompanying drawings. When the test energy storage high-voltage box platform initializes logic, the test upper computer controls the energy storage high-voltage box to enter initialization according to the edited test CASE, a circuit breaker and a contactor in the test energy storage high-voltage box can be switched from an open position to a closed position according to a logic instruction, a CMU in the test energy storage high-voltage box can be started normally, and the test energy storage high-voltage box platform is in a non-alarm and non-protection state under the normal BMU data simulation condition; meanwhile, the test upper computer controls the automatic test system platform equipment of the energy storage high-voltage box product to enter initialization according to the edited test CASE, the simulation test equipment in the test automatic test system platform can be switched from other states to an initialization state according to a logic instruction, the high-low voltage control switching part in the test automatic test system platform can realize high-low voltage control switching according to the logic instruction, and the service end equipment part in the test automatic test system platform can realize the analog input initialization of the service end data according to the logic instruction. If the equipment can automatically enter an initialization state according to the logic requirements set in the test CASE, the initialization test of the energy storage high-voltage box platform is qualified. If more than one item of the equipment fails to enter the initialization state according to the logic requirement set in the test CASE, the test is not qualified. After the whole process test is finished, the test upper computer automatically outputs a corresponding test report and test data for a tester to analyze whether the function is invalid or not. Similarly, when testing other functions of the energy storage high-voltage box product, the testing upper computer controls the corresponding module/unit to output or detect simulation data according to the edited testing CASE to automatically complete the whole process test, as shown in FIGS. 5-9 and 10-13 of the attached drawings.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in 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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