CN111983993B - Automatic testing method for energy storage CMU - Google Patents
Automatic testing method for energy storage CMU Download PDFInfo
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- CN111983993B CN111983993B CN202010700481.2A CN202010700481A CN111983993B CN 111983993 B CN111983993 B CN 111983993B CN 202010700481 A CN202010700481 A CN 202010700481A CN 111983993 B CN111983993 B CN 111983993B
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- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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Abstract
The invention discloses an automatic testing method for an energy storage CMU, and relates to the technical field of CMU product testing. The automatic testing method for the energy storage CMU comprises a hardware platform and a software testing part, wherein the hardware platform comprises an analog-to-digital signal output unit, a signal detection unit, a cluster voltage and insulation resistance analog simulation unit, a power supply and detection unit, a server analog data simulation unit and a network communication unit, all the units are electrically connected, and the analog-to-digital signal output unit consists of an AO (analog-to-digital) and a DO (data-on-analog) functional module; the software testing part comprises a testing upper computer and a testing CASE, wherein 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 problems that the existing CMU product testing has high manpower and economic cost and low testing efficiency and expansibility are solved.
Description
Technical Field
The invention relates to the technical field of CMU product testing, in particular to an automatic testing method for an energy storage CMU.
Background
The energy storage CMU is used as the core and the brain of the energy storage BMS system, and the energy storage BMS system is also used as the guard of the lithium ion battery in the energy storage system. Therefore, to ensure the safety and stability of the lithium ion battery, it is critical to ensure the stability and reliability of the performance of the energy storage CMU product. Through research, in the existing energy storage industry, the following two methods are mainly used for the shipment test of energy storage CMU products of most manufacturers:
(1) and the main functions of the CMU are partially tested by depending on a manual test tool or manually building a test platform.
(2) The semi-automatic test platform is built by purchasing various complete equipment by equipment manufacturers, related test upper computers are developed in an oriented mode, and then the test functions are purchased at high price or customized.
Although both of the above methods can achieve the functional test of the energy storage CMU product, the following problems and disadvantages exist:
(1) the manual test fixture or the manual built test platform is low in test efficiency and high in labor cost, and is not beneficial to mass production and shipment of the energy storage CMU. And partial functions of the energy storage CMU are extremely difficult to test or even can not be tested through the artificial platform, so the method also has the risks of incomplete test functions and unreal test results.
(2) The test functions and equipment are purchased or customized at a high price by the equipment manufacturer. The method needs customized development, and has high investment cost and poor expansibility. The method is not suitable for the basic concept of economical, efficient, comprehensive and universal test tool equipment.
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 CMU, which solves the problems of high labor and economic cost and low testing efficiency of the existing CMU product.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: an automatic test method for an energy storage CMU comprises a hardware platform and a software test part, wherein the hardware platform comprises an analog-to-digital signal output unit, a signal detection unit, a cluster voltage and insulation resistance analog simulation unit, a power supply and detection unit, a server analog data simulation unit and a network communication unit, all the units are electrically connected, and the analog-to-digital signal output unit consists of an AO (analog-to-digital) and a DO (data-to-analog) functional module; the system comprises a signal detection unit, a power supply and detection unit, a server end simulation data simulation unit, a network communication unit, a test upper computer and a test CASE, wherein the signal detection unit consists of AI and DI functional modules, the cluster voltage and insulation resistance simulation unit consists of a cluster voltage simulation platform and an insulation resistance output module, the power supply and detection unit consists of a program-controlled power supply capable of realizing remote communication, the server end simulation data simulation unit consists of an air conditioner data simulation unit and a BMU data simulation unit, the network communication unit can consist of other communication modules such as an industrial switch and a serial server, the software test part comprises a test upper computer and a test CASE, the test 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 test result output part, and the test CASE consists of an object value, an array, a character string and a digital part.
The hardware platform and software testing part automatically tests the energy storage CMU through the following steps:
firstly, an AO module in an analog signal output unit in a hardware platform outputs analog voltage and current analog quantity to a CMU for acquisition, and a DO module outputs a DO digital quantity signal to the CMU for acquisition;
secondly, the test upper computer controls the AO/DO module to output an AO/DO signal for testing according to the test CASE, and the CMU uploads the state change and converted data to the test upper computer for analysis and judgment after acquiring the AO/DO signal to obtain a test result and output a corresponding test report;
thirdly, the cluster voltage and insulation resistance simulation unit consists of a cluster voltage simulation platform and an insulation resistance output module, the cluster voltage simulation platform provides a high-voltage test environment for insulation resistance detection of the CMU, a cluster voltage simulation test value is provided for the CMU to collect according to a test CASE, and the insulation resistance output module automatically switches and outputs an insulation resistance value for the test to the CMU to collect according to the test CASE;
fourthly, after the CMU acquires the cluster voltage value and the insulation resistance value, the data of the self state change and the converted data are uploaded to a test upper computer for analysis and judgment, a test result is obtained, and a corresponding test report is output;
fifthly, the server end simulation data simulation unit consists of an air conditioner simulation data simulation unit and a BMU simulation data simulation unit, the testing upper computer controls the air conditioner simulation data simulation unit to output air conditioner simulation data for testing to the CMU for collection according to the testing CASE, the CMU uploads the collected air conditioner data to the testing upper computer for analysis and judgment, a testing result is obtained, and a corresponding testing report is output;
and sixthly, the testing upper computer controls the BMU simulation data simulation unit to output the single battery voltage simulation data and the battery temperature simulation data for testing to the CMU for collection according to the testing CASE, the CMU uploads the collected simulation data to the testing upper computer for analysis and judgment, a testing result is obtained, and a corresponding testing report is output.
Seventhly, when testing the monomer overvoltage protection logic of the energy storage CMU, controlling the BMU simulation data simulation unit to output the cell voltage simulation data and the cell temperature simulation data for testing to the CMU by the testing upper computer according to the edited testing CASE, and simulating that the cell is in an overvoltage state; the method comprises the steps that a test upper computer controls an AO module to output a charging current AO analog signal to a CMU to be collected according to an edited test CASE, the analog battery is in a charging state, at the moment, the CMU judges whether the battery is overcharged according to protection control logic inside the CMU, a DO control contactor opening signal is output, when a DI module externally connected with the CMU detects the DO control contactor opening signal output by the CMU, the DI module uploads protection information to the test upper computer through a communication interface to be analyzed and judged, whether the protection control logic of the CMU takes effect or not is determined, and after the whole process test is finished, the test upper computer outputs a corresponding test report for a tester to analyze; similarly, when the single under-voltage protection logic of the energy storage CMU is tested, the testing upper computer also controls the corresponding module/unit to output simulation data according to the edited testing CASE to automatically complete the whole process testing.
Preferably, in each test process, the test upper computer calls the test CASE-1 to the test CASE-n (n is larger than or equal to 1) in sequence according to the flow, the test result is judged and output after each call, and then the next test is carried out.
Preferably, the cluster voltage and insulation resistance simulation unit carries out simulation by a cluster voltage simulation platform by adopting a DC 0-1000V adjustable constant voltage source, and the insulation resistance output module adopts a multi-path insulation resistance automatic switching input device.
Advantageous effects
The invention provides an automatic testing method for an energy storage CMU. The method has the following beneficial effects: according to the automatic testing method for the energy storage CMU, data of a battery working under different states can be simulated accurately to be collected by the energy storage CMU, and warning and protection measures of the energy storage CMU on the battery under different states are read in real time, so that whether each function of the tested energy storage CMU fails or not is judged. Real test data is read and recorded in real time in the whole process, test items which do not pass are automatically screened out, and a convincing test report is output. The quality control management is improved, and the shipment quality is also ensured; therefore, automatic cycle testing can be realized, manpower resources are liberated, and the labor cost is saved. The corresponding testing CASE script can be edited according to different testing items and testing requirements, and the testing CASE script can comprehensively cover all functions of the CMU and software protection control logic, so that the testing function diversification is realized; the test data and the test result can be automatically recorded and exported, the test report can be automatically output, the monitoring and the management of the whole test process can be realized, the analysis of the test data by testers is facilitated, and the test method is improved.
Drawings
Fig. 1 is a functional schematic diagram of an energy storage CMU according to the present invention;
fig. 2 is a test logic diagram when the automatic test method platform provided by the present invention is used for testing the overvoltage protection of the energy storage CMU cell;
FIG. 3 is a schematic diagram of a simulation test of the present invention;
FIG. 4 is a network diagram of an automated testing method platform according to the present invention;
FIG. 5 is a schematic diagram of an automated test of the present invention;
FIG. 6 is a block diagram of an automated testing process according to 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. 1-6, the present invention provides a technical solution: an automatic test method for an energy storage CMU comprises a hardware platform and a software test part, wherein the hardware platform comprises an analog-to-digital signal output unit, a signal detection unit, a cluster voltage and insulation resistance analog simulation unit, a power supply and detection unit, a server analog data simulation unit and a network communication unit, all the units are electrically connected, and the analog-to-digital signal output unit consists of an AO (analog-to-digital) and a DO (data-to-analog) functional module; the system comprises a signal detection unit, a power supply and detection unit, a server end simulation data simulation unit, a network communication unit, a test upper computer and a test CASE, wherein the signal detection unit consists of AI and DI functional modules, the cluster voltage and insulation resistance simulation unit consists of a cluster voltage simulation platform and an insulation resistance output module, the power supply and detection unit consists of a program-controlled power supply capable of realizing remote communication, the server end simulation data simulation unit consists of an air conditioner data simulation unit and a BMU data simulation unit, the network communication unit can consist of other communication modules such as an industrial switch and a serial server, the software test part comprises a test upper computer and a test CASE, the test 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 test result output part, and the test CASE consists of an object value, an array, a character string and a digital part.
The hardware platform and software testing part automatically tests the energy storage CMU through the following steps:
firstly, an AO module in an analog signal output unit in a hardware platform outputs analog voltage and current analog quantity to a CMU for acquisition, and a DO module outputs a DO digital quantity signal to the CMU for acquisition;
secondly, the test upper computer controls the AO/DO module to output an AO/DO signal for testing according to the test CASE, and the CMU uploads the state change and converted data to the test upper computer for analysis and judgment after acquiring the AO/DO signal to obtain a test result and output a corresponding test report;
thirdly, the cluster voltage and insulation resistance simulation unit consists of a cluster voltage simulation platform and an insulation resistance output module, the cluster voltage simulation platform provides a high-voltage test environment for insulation resistance detection of the CMU, a cluster voltage simulation test value is provided for the CMU to collect according to a test CASE, and the insulation resistance output module automatically switches and outputs an insulation resistance value for the test to the CMU to collect according to the test CASE;
fourthly, after the CMU acquires the cluster voltage value and the insulation resistance value, the data of the self state change and the converted data are uploaded to a test upper computer for analysis and judgment, a test result is obtained, and a corresponding test report is output;
fifthly, the server end simulation data simulation unit consists of an air conditioner simulation data simulation unit and a BMU simulation data simulation unit, the testing upper computer controls the air conditioner simulation data simulation unit to output air conditioner simulation data for testing to the CMU for collection according to the testing CASE, the CMU uploads the collected air conditioner data to the testing upper computer for analysis and judgment, a testing result is obtained, and a corresponding testing report is output;
and sixthly, the testing upper computer controls the BMU simulation data simulation unit to output the single battery voltage simulation data and the battery temperature simulation data for testing to the CMU for collection according to the testing CASE, the CMU uploads the collected simulation data to the testing upper computer for analysis and judgment, a testing result is obtained, and a corresponding testing report is output.
Seventhly, when testing the monomer overvoltage protection logic of the energy storage CMU, controlling the BMU simulation data simulation unit to output the cell voltage simulation data and the cell temperature simulation data for testing to the CMU by the testing upper computer according to the edited testing CASE, and simulating that the cell is in an overvoltage state; the method comprises the steps that a test upper computer controls an AO module to output a charging current AO analog signal to a CMU to be collected according to an edited test CASE, the analog battery is in a charging state, at the moment, the CMU judges whether the battery is overcharged according to protection control logic inside the CMU, a DO control contactor opening signal is output, when a DI module externally connected with the CMU detects the DO control contactor opening signal output by the CMU, the DI module uploads protection information to the test upper computer through a communication interface to be analyzed and judged, whether the protection control logic of the CMU takes effect or not is determined, and after the whole process test is finished, the test upper computer outputs a corresponding test report for a tester to analyze; similarly, when the single under-voltage protection logic of the energy storage CMU is tested, the testing upper computer also controls the corresponding module/unit to output simulation data according to the edited testing CASE to automatically complete the whole process testing.
In the embodiment, in each test process, the test upper computer calls the test CASE-1 to the test CASE-n (n is larger than or equal to 1) in sequence according to the flow, the test result is judged and output after each call, and then the next test is carried out.
In this embodiment, the cluster voltage and insulation resistance simulation unit performs simulation by using a DC 0-1000V adjustable constant voltage source through a cluster voltage simulation platform, and the insulation resistance output module uses a multi-path insulation resistance automatic switching input device.
Taking the single body overvoltage and undervoltage protection test of the energy storage CMU as an example, as shown in fig. 2 of the accompanying drawings. When the monomer overvoltage protection logic of the energy storage CMU is tested, the testing upper computer controls the BMU simulation data simulation unit to output the cell voltage simulation data and the cell temperature simulation data for testing to the CMU for collection according to the edited testing CASE, and the simulation cell is in an overvoltage state; meanwhile, the test upper computer controls the AO module to output a charging current AO analog signal to the CMU for collection according to the edited test CASE, and the analog battery is in a charging state. At the moment, according to the protection control logic inside the CMU, the CMU judges that the battery is overcharged and outputs a DO control contactor opening signal without fail. When the DI module externally connected with the CMU detects a DO control contactor opening signal output by the CMU, the DI module uploads the protection information to a test upper computer through a communication interface for analysis and judgment, and whether the protection control logic of the CMU takes effect or not is determined. And after the whole process test is finished, the test upper computer outputs a corresponding test report for a tester to analyze. Similarly, when the single under-voltage protection logic of the energy storage CMU is tested, the testing upper computer also controls the corresponding module/unit to output simulation data according to the edited testing CASE to automatically complete the whole process testing.
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 (3)
1. An automatic testing method for an energy storage CMU comprises a hardware platform and a software testing part, and is characterized in that: the hardware platform comprises an analog signal output unit, a signal detection unit, a cluster voltage and insulation resistance analog unit, a power supply and detection unit, a server analog data analog unit and a network communication unit, wherein all the units are electrically connected, and the analog signal output unit consists of an AO (analog-to-digital) functional module and a DO (data-on-analog) functional module; the system comprises a signal detection unit, a server simulation data simulation unit, a network communication unit, a test result output unit and a data analysis and judgment unit, wherein the signal detection unit consists of AI and DI functional modules, the cluster voltage and insulation resistance simulation unit consists of a cluster voltage simulation platform and an insulation resistance output module, the power supply and detection unit adopts a program-controlled power supply capable of realizing remote communication, the server simulation data simulation unit consists of an air conditioner data simulation unit and a BMU data simulation unit, the network communication unit can consist of other communication modules such as an industrial switch and a serial server, the software test part comprises a test upper computer and a test CASE, the test upper computer consists of an information acquisition part, a data analysis part, a communication interaction part, a functional control and analysis judgment part and a test result output part, and the test CASE consists of an object value, an array, a character string;
the hardware platform and software testing part automatically tests the energy storage CMU through the following steps:
firstly, an AO module in an analog signal output unit in a hardware platform outputs analog voltage and current analog quantity to a CMU for acquisition, and a DO module outputs a DO digital quantity signal to the CMU for acquisition;
secondly, the test upper computer controls the AO/DO module to output an AO/DO signal for testing according to the test CASE, and the CMU uploads the state change and converted data to the test upper computer for analysis and judgment after acquiring the AO/DO signal to obtain a test result and output a corresponding test report;
thirdly, the cluster voltage and insulation resistance simulation unit consists of a cluster voltage simulation platform and an insulation resistance output module, the cluster voltage simulation platform provides a high-voltage test environment for insulation resistance detection of the CMU, a cluster voltage simulation test value is provided for the CMU to collect according to a test CASE, and the insulation resistance output module automatically switches and outputs an insulation resistance value for the test to the CMU to collect according to the test CASE;
fourthly, after the CMU acquires the cluster voltage value and the insulation resistance value, the data of the self state change and the converted data are uploaded to a test upper computer for analysis and judgment, a test result is obtained, and a corresponding test report is output;
fifthly, the server end simulation data simulation unit consists of an air conditioner simulation data simulation unit and a BMU simulation data simulation unit, the testing upper computer controls the air conditioner simulation data simulation unit to output air conditioner simulation data for testing to the CMU for collection according to the testing CASE, the CMU uploads the collected air conditioner data to the testing upper computer for analysis and judgment, a testing result is obtained, and a corresponding testing report is output;
sixthly, the testing upper computer controls the BMU simulation data simulation unit to output single battery voltage simulation data and battery temperature simulation data for testing to the CMU for collection according to the testing CASE, the CMU uploads the collected simulation data to the testing upper computer for analysis and judgment, a testing result is obtained, and a corresponding testing report is output;
seventhly, when testing the monomer overvoltage protection logic of the energy storage CMU, controlling the BMU simulation data simulation unit to output the cell voltage simulation data and the cell temperature simulation data for testing to the CMU by the testing upper computer according to the edited testing CASE, and simulating that the cell is in an overvoltage state; the method comprises the steps that a test upper computer controls an AO module to output a charging current AO analog signal to a CMU to be collected according to an edited test CASE, the analog battery is in a charging state, at the moment, the CMU judges whether the battery is overcharged according to protection control logic inside the CMU, a DO control contactor opening signal is output, when a DI module externally connected with the CMU detects the DO control contactor opening signal output by the CMU, the DI module uploads protection information to the test upper computer through a communication interface to be analyzed and judged, whether the protection control logic of the CMU takes effect or not is determined, and after the whole process test is finished, the test upper computer outputs a corresponding test report for a tester to analyze; similarly, when the single under-voltage protection logic of the energy storage CMU is tested, the testing upper computer also controls the corresponding module/unit to output simulation data according to the edited testing CASE to automatically complete the whole process testing.
2. An automated testing method for an energy storing CMU according to claim 1, 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. An automated testing method for an energy storing CMU according to claim 2, characterized in that: the cluster voltage and insulation resistance simulation unit is used for simulation by a cluster voltage simulation platform through a DC 0-1000V adjustable constant voltage source, and the insulation resistance output module is a multi-path insulation resistance automatic switching input device.
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