WO2018101620A1 - Procédé de test de batterie secondaire utilisant des métadonnées - Google Patents

Procédé de test de batterie secondaire utilisant des métadonnées Download PDF

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Publication number
WO2018101620A1
WO2018101620A1 PCT/KR2017/012354 KR2017012354W WO2018101620A1 WO 2018101620 A1 WO2018101620 A1 WO 2018101620A1 KR 2017012354 W KR2017012354 W KR 2017012354W WO 2018101620 A1 WO2018101620 A1 WO 2018101620A1
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Prior art keywords
sequence
secondary battery
test
measurement
unit
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PCT/KR2017/012354
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English (en)
Korean (ko)
Inventor
윤철오
정홍욱
이성호
김동운
김연구
Original Assignee
주식회사 맥사이언스
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Priority claimed from KR1020160162920A external-priority patent/KR101888125B1/ko
Priority claimed from KR1020160162918A external-priority patent/KR101952406B1/ko
Application filed by 주식회사 맥사이언스 filed Critical 주식회사 맥사이언스
Publication of WO2018101620A1 publication Critical patent/WO2018101620A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • 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
    • 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
    • G01R27/28—Measuring attenuation, gain, phase shift or derived characteristics of electric four pole networks, i.e. two-port networks; Measuring transient response
    • 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
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/317—Testing of digital circuits
    • G01R31/3181—Functional testing
    • G01R31/3183—Generation of test inputs, e.g. test vectors, patterns or sequences
    • 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
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to a secondary battery test method using metadata.
  • the present disclosure is to provide a secondary battery test method using metadata.
  • a secondary battery test method comprising: preparing a secondary battery; Testing the characteristics of the secondary battery with respect to a predetermined test item; Extracting measurement data according to the test item; Extracting characteristic data corresponding to a predetermined characteristic factor from the measured data; And generating metadata from the characteristic factor and the characteristic data.
  • the secondary battery test method may generate metadata from a large amount of measurement data to simplify the test result and store it in a relatively small capacity.
  • the secondary battery test method may easily manage characteristic data for each characteristic factor by extracting characteristic data corresponding to a predetermined characteristic factor from measurement data and generating metadata.
  • the secondary battery test method may generate metadata including test conditions, secondary battery information, and the like.
  • the characteristics of the secondary battery may be tested according to various test items, and feature data corresponding to separate characteristic factors may be extracted for each test item. Therefore, it is possible to generate appropriate metadata according to the test item.
  • the secondary battery test method may extract correlation by comparing metadata generated by different test items.
  • the secondary battery test method manages various types of secondary battery test items in a measurement sequence, thereby easily performing tests by automating and standardizing a series of tasks required for the secondary battery test.
  • various types of secondary battery test items may be iconized by sequence blocks to easily test the characteristics of the secondary battery.
  • the secondary battery test method may easily test the secondary battery characteristics by using a measurement sequence generated by arranging an iconized sequence block.
  • the secondary battery test method may easily test the secondary battery characteristics by allowing the measurement sequence to include a sequence unit including a plurality of sequence blocks. If an iterative test is required, an iterative test may be performed for each unit of sequence.
  • the secondary battery characteristic test may be easily performed by generating, manufacturing, storing, and editing a measurement sequence.
  • the secondary battery test method may generate metadata from the measurement data received from the test device, so that significant information related to the test may be confirmed with only the metadata without storing or reading a large amount of measurement data.
  • Secondary battery test method may show a graph from the measurement data received from the test device.
  • FIG. 1 is a flow chart of a secondary battery test method according to one embodiment.
  • FIG. 2 is a view of a secondary battery test method according to FIG. 1.
  • FIG. 3 is a flowchart of a secondary battery test method according to another embodiment.
  • FIG. 4 is a view of a secondary battery test method according to FIG. 3.
  • FIG. 5 is a flow chart of a secondary battery test method according to another embodiment.
  • FIG. 6 is a view of a secondary battery test method according to FIG. 5.
  • FIG. 7 is a view of a secondary battery test method according to a charge / discharge item.
  • FIG. 8 is a diagram of a secondary battery test method according to charge and discharge cycle items.
  • FIG. 9 is a diagram of a secondary battery test method according to a frequency response item.
  • FIG. 10 is a diagram of a secondary battery test method according to a transient response item.
  • FIG. 11 is a block diagram of a control device and a secondary battery measuring apparatus according to an exemplary embodiment.
  • FIG. 12 is a diagram illustrating sequence blocks according to an embodiment.
  • FIG. 13 is a diagram illustrating a measurement sequence, according to an embodiment.
  • FIG. 14 is a flowchart illustrating a secondary battery test method, according to an exemplary embodiment.
  • 15 is a flowchart illustrating a method of generating a measurement sequence, according to an exemplary embodiment.
  • 16 is a flowchart illustrating a secondary battery test method according to another embodiment.
  • 17 is a screen illustrating an interface shown at an output of a control device according to an exemplary embodiment.
  • FIG. 18 is a screen illustrating a graph shown at an output of a control device according to an exemplary embodiment.
  • 19 is a screen illustrating a graph shown at an output of a control device according to another embodiment.
  • a secondary battery test method comprising: preparing a secondary battery; Testing the characteristics of the secondary battery with respect to a predetermined test item; Extracting measurement data according to the test item; Extracting characteristic data corresponding to a predetermined characteristic factor from the measured data; And generating metadata from the characteristic factor and the characteristic data.
  • the method may further include generating metadata from the basic information on the prepared secondary battery.
  • the basic information may include at least one of product information and constituent material information.
  • Generating metadata from the test conditions of the step of testing the property may further include.
  • the test condition may include at least one of a test date and time, a test location, a test device, user information, a test item, and a test control variable.
  • the characteristic factor may further include a functional characteristic factor set by fitting the measurement data to a function.
  • the functional characteristic factor may include at least one of a coordinate of a minimum point, a coordinate of a maximum point, a coordinate of a maximum point, a coordinate of a minimum point, a derivative value, a coordinate of an inflection point, a time constant, and an extreme value.
  • the method may further include displaying the measured data in a graph.
  • the characteristic data may be extracted from the measured data using a mathematical operation algorithm.
  • the characteristic factor may be set by an external input.
  • the metadata may be generated as an electronic file.
  • the testing of the characteristics may include testing the characteristics of the secondary battery with respect to a first test item; And testing the characteristics of the secondary battery with respect to the second test item.
  • the method may further include extracting a correlation between the first test item and the second test item by comparing the metadata for the first test item and the metadata for the second test item.
  • the extracting of the correlation may extract the correlation through at least one of a statistical analysis method, a big data analysis method, a machine learning method, and a neural network method.
  • the test item may include at least one of a charge / discharge item, a frequency response item, a transient response item, an internal resistance item, and an open voltage item.
  • the characteristic factors include charge capacity, discharge capacity, coulomb efficiency, constant current charge capacity, constant voltage charge capacity, current decay rate, maximum power during discharge, minimum power during discharge, total amount of energy, charge and discharge It may include at least one of the efficiencies.
  • the characteristic factor may include a functional characteristic factor set by fitting the measured data to a function after Nyquist plot or Bode plot.
  • the functional characteristic factor may include at least one of an absolute value, a phase, a real value, an imaginary value, and a frequency value corresponding to the complex impedance measurement value measured at predetermined frequency intervals.
  • the functional characteristic factors include the inclination of a linear line linearly from the smallest point to the maximum point, the radius of the semicircle of the semicircle fitting the lowest point and the maximum point, the first distance between the real point coordinate of the lowest point and the real point coordinate of the maximum point, and the imaginary coordinate of the lowest point. It may include at least one of the ratio of the second distance to the imaginary coordinate of the maximum point.
  • the characteristic factor may include at least one of an initial voltage value, a step current value, and a DC resistance value measured at a predetermined time interval.
  • the characteristic factor may include a functional characteristic factor set by fitting DC resistance data as a function.
  • the functional characteristic factor may include at least one of an inflection point coordinate and a time constant of the function.
  • the characteristic factor may include an AC resistance value measured for a predetermined frequency, a DC resistance value measured for a predetermined time and a constant current.
  • the characteristic factor may include an open voltage value measured at a predetermined time interval and a measured time value at which the open voltage value is measured.
  • the characteristic factor may include a functional characteristic factor set by fitting the open voltage value data as a function.
  • the functional characteristic factor may include at least one of an inflection point coordinate and a time constant of the function.
  • a secondary battery test method includes generating a measurement sequence; Transferring the generated measurement sequence to a secondary battery measuring apparatus; Receiving measurement data of the secondary battery measured from the secondary battery measuring apparatus; And generating the received measurement data as metadata.
  • the measurement sequence may be generated by selecting a sequence block by a user through a user input unit.
  • the generating of the measurement sequence may include generating a sequence block by a user through a user input unit to generate the measurement sequence.
  • the generating of the measurement sequence may include generating a measurement unit by a user through a user input unit to generate the measurement sequence, and the sequence unit may include at least two sequence blocks.
  • the number of repetitions of the sequence unit may be input through the user input unit.
  • the sequence unit may include a first sequence unit and a second sequence unit, the first sequence unit may include at least two sequence blocks, and the second sequence unit may include at least two sequence blocks.
  • the sequence unit may correspond to a secondary battery test item.
  • the secondary battery test item may include at least one of a charge / discharge item, a transient response item, a frequency response item, an open voltage item, and a charge / discharge cycle item.
  • the number of repetitions of the measurement sequence may be input through the user input unit.
  • the sequence block may correspond to a test item of a secondary battery.
  • the test items of the secondary battery include at least one of charging, discharging, charging and discharging, frequency response test, AC impedance measurement, transient response test, DC resistance measurement, AC resistance measurement, open voltage measurement, pause, cycle, and temperature change measurement. It may include.
  • the generating of the metadata may include extracting characteristic data corresponding to a predetermined characteristic factor from the measured data; And generating metadata from the characteristic factor and the characteristic data.
  • the metadata may be generated as an electronic file.
  • Control device the communication unit; A user input unit through which a user's command can be input; And a controller configured to execute at least one program, generate a measurement sequence according to a user's command from the user input unit, and transmit the generated measurement sequence to the outside through the communication unit.
  • Generating a measurement sequence Transferring the generated measurement sequence to a secondary battery measuring apparatus; Receiving measurement data of the secondary battery measured from the secondary battery measuring apparatus; And generating the received measurement data as metadata.
  • the generating of the measurement sequence may include generating a measurement sequence by selecting a sequence block by a user through the user input unit.
  • the generating of the measurement sequence may include generating a measurement unit by a user through the user input unit and generating the measurement sequence, and the sequence unit may include at least two sequence blocks.
  • the number of repetitions of the sequence unit may be input through the user input unit.
  • the number of repetitions of the measurement sequence may be input through the user input unit.
  • the generating of the metadata may include extracting characteristic data corresponding to a predetermined characteristic factor from the measured data; And generating metadata from the characteristic factor and the characteristic data.
  • the metadata may be generated as an electronic file.
  • the program may cause the sequence block to the output unit as an icon.
  • the program may provide an interface for arranging the sequence blocks in a line to generate a measurement sequence.
  • the program may provide an interface for generating the sequence unit.
  • the program may provide an interface for designating the number of repetitions of the measurement sequence.
  • the program may graph the measurement data.
  • FIG. 1 is a flow chart of a secondary battery test method according to one embodiment.
  • 2 is a view of a secondary battery test method according to FIG. 1.
  • the secondary battery test method includes preparing a secondary battery 200 (S101) and characterizing the secondary battery 200 through the test apparatus 100. Testing (S102), deriving measurement data (S103), extracting characteristic data corresponding to characteristic factors from the measurement data (S104), and generating metadata from characteristic factors and characteristic data (S105). It may include.
  • the secondary battery 200 that is a characteristic test target may be provided.
  • the secondary battery 200 may be provided in a test chamber of the test apparatus 100.
  • the test apparatus 100 may test the characteristics of the secondary battery 200 with respect to a predetermined test item.
  • the test item may include, for example, a charge / discharge item, a transient response item, a frequency response item, an open voltage item, and a charge / discharge cycle item.
  • the test item is not limited to the above-described embodiment, and may include various test items for testing the characteristics of the secondary battery 200.
  • the characteristics of the secondary battery are, for example, charge capacity, discharge capacity, coulomb efficiency, constant current charge capacity, constant voltage charge capacity, current decay rate, maximum power during discharge, minimum power during discharge, total amount of energy, charge and discharge efficiency, and complex impedance.
  • the measured value, the DC resistance value, the AC resistance value, the open voltage value, and the like may be included.
  • Test items may include various test items for testing the characteristics of such secondary batteries.
  • the measurement data may be extracted as a result of testing the characteristics of the secondary battery 200 in the characteristic test step (S102).
  • the measurement data can be derived from the test apparatus 100.
  • the measurement data may include a plurality of data related to the test item measured by the test apparatus 100.
  • the measurement data for test item 1 may include a plurality of data including, for example, data 1 to 20.
  • the content of the measurement data may be changed according to the test item measured by the test apparatus 100. Since the measurement data includes a plurality of raw raw data, it is not easy to extract the characteristics of the secondary battery 200 and may require a large storage space for storage.
  • the characteristic data corresponding to the characteristic factor pre-determined according to the test item may be extracted from the measurement data.
  • the characteristic factor may be preset for each test item and stored in a memory unit (not shown), a controller (not shown), or the like.
  • the characteristic factor may be a characteristic variable capable of identifying the characteristics of the secondary battery.
  • the characteristic factor can be changed by an external input. For example, when the user changes the characteristic factor in the external input device (not shown), the characteristic factor stored in the memory unit (not shown) may be changed.
  • the characteristic data is data corresponding to the characteristic factor.
  • the characteristic data may correspond to data of some of the measurement data.
  • the characteristic data may be data derived by converting the measured data with a mathematical calculation algorithm and converting the measured data.
  • Mathematical arithmetic algorithms may include mathematical methods such as fitting, derivative, integration, and the like as a function.
  • the mathematical operation algorithm may include any code in which a control unit (not shown) may programmatically approach the above-described mathematical method.
  • the characteristic data may be directly derived from the measurement data, or the measurement data may be determined by calculating and converting the mathematical data using a mathematical algorithm. This determination may be made by a controller (not shown), but is not limited thereto.
  • the controller may include the characteristic factors stored from the memory unit (not shown) and By reading the characteristic data method, it is possible to automatically derive the characteristic factor and characteristic data from the measured data. Therefore, the user's characteristic test of a simpler and faster secondary battery is performed by a control unit (not shown) or a memory unit (not shown) instead of directly performing a calculation to derive meaningful results from the measured data. This may be possible.
  • a detailed method of deriving the characteristic data by converting the measurement data by a mathematical operation algorithm will be described later with reference to FIGS. 3 and 4.
  • the characteristic data of the characteristic factors A to E corresponding to the test item 1 may be extracted from the measurement data.
  • characteristic data corresponding to characteristic factor A corresponds to data 1 of measurement data
  • characteristic data corresponding to characteristic factor B corresponds to data 3 of measurement data
  • characteristic data corresponding to characteristic factor C is measured.
  • the characteristic data corresponding to data 8 of the data and corresponding to the characteristic factor D may correspond to data 12 of the measurement data
  • the characteristic data corresponding to the characteristic factor E may correspond to data 17 of the measurement data. Therefore, in comparison to the measurement data including more than 20 data, in this step (S104) it is possible to simplify the characteristic value of the secondary battery 200 corresponding to the test item 1 with five characteristic data corresponding to five characteristic factors. Can be.
  • the characteristic factor corresponding to the test item extracted in the previous step S104 and the characteristic data for each characteristic factor may be generated as metadata.
  • Metadata is data structured data, and means data for describing other data.
  • the metadata may be generated to include characteristic factors and characteristic data for each test item, thereby easily describing the measurement data. Therefore, instead of storing the result of testing the characteristics of the secondary battery 200 as the measurement data, the test apparatus 100 may generate and store metadata including the characteristic factors and the characteristic data.
  • the metadata may be generated in the form of an electronic file.
  • metadata may be generated as a digital document or electronic document that can be created, edited, and stored on a computer.
  • the metadata may be generated as a digital document or an electronic document written in a structured language that can be searched, such as an extensible markup language.
  • metadata may be generated to make a predetermined characteristic factor a field.
  • the metadata may be generated as an electronic document in a spreadsheet format consisting of rows and columns of predetermined characteristic factors and the extracted characteristic data corresponding thereto.
  • the secondary battery test method may further include generating metadata from the test conditions (S106).
  • the test conditions may include test date, time, location, test device type, test device model, and user information.
  • test conditions may include test control variables.
  • the test control variable may include a test item, an open voltage, a charge current, a discharge current, a charge rate, a discharge rate, a charge degree, a temperature, a cycle, an AC perturbation current, and the like.
  • Metadata generated from the test conditions may be generated in the form of an electronic file.
  • the metadata generated from the test conditions may be generated in one electronic file or in a separate electronic file together with the metadata generated from the characteristic factor and the characteristic data.
  • the secondary battery test method may further include generating metadata from the secondary battery basic information (S107).
  • the secondary battery basic information may include product information and constituent material information, for example.
  • the product information may include a product model name, serial number, form, specification, weight, volume, nominal capacity, and the like.
  • the constituent material information may include positive electrode information, negative electrode information, electrolyte information, and the like.
  • Such secondary battery basic information is only an example and is not limited to the above-described embodiment.
  • the metadata generated from the secondary battery basic information may be generated in the form of an electronic file.
  • the metadata generated from the secondary battery basic information may be generated in one electronic file or in a separate electronic file along with the metadata generated from the characteristic factor and the characteristic data.
  • FIG. 3 is a flowchart of a secondary battery test method according to another embodiment.
  • 4 is a view of a secondary battery test method according to FIG. 3. 3 and 4, the secondary battery test method according to the present embodiment includes preparing a secondary battery (S201), testing a characteristic of the secondary battery (S202), and deriving measurement data. (S203), extracting the function data which is characteristic data corresponding to the functional characteristic factor set by fitting the measurement data to the function (S204), generating metadata from the functional characteristic factor and the function data (S205) It may include.
  • the fitting step S204-1 may be illustrated as a graph using data of at least some of the measured data, and may be fitted to the function.
  • the fitting method of the function is not limited to the specific embodiment, and conventional fitting methods can be used. Referring to FIG. 4, a graph may be illustrated using some data of measurement data corresponding to test item 1. Since the measurement data is a discrete set of data, the graph shown may be shown in the form of several coordinate points rather than a continuous function.
  • step S204-1 fitting a function for example, a controller (not shown) may fit the graph in the form of a coordinate point into a continuous function.
  • the fitting method may be selected according to the test item.
  • function fitting may be performed based on four types of functional feature points: minimum, maximum, maximum, and minimum.
  • minimum, maximum, maximum, and minimum For example, you can fit a function as a circle, an ellipse, or a curve function using minimum and maximum points.
  • a linear fit or an exponential fit can be performed using the minimum and maximum points.
  • the functional characteristic factors may include coordinates of the lowest point, coordinates of the maximum point, coordinates of the maximum point, coordinates of the minimum point, differential value, coordinates of the inflection point, time constant, extreme value, and slope of the fitted function.
  • the functional characteristic factors may include the coordinate A of the lowest point, the coordinate B of the maximum point, the coordinate C of the minimum point, the coordinate D of the maximum point, and the slope E fitted with a straight line.
  • the characteristic data corresponding to the minimum point A and the maximum point D can be extracted from the measurement data as it is, but the function data corresponding to the maximum point B and the minimum point C are based on the fitted function, not the value determined in the measurement data.
  • the point at which the derivative is zero can be calculated and extracted.
  • the inclination E can be extracted by calculating the inclination of the dotted line which linearly fitted the minimum point (C) and the maximum point (D).
  • the functional characteristic factor may be set from a geometrical characteristic or a mathematical characteristic of the fitted function, and the characteristic data corresponding thereto may be extracted directly from the measurement data or through a suitable mathematical operation.
  • step S205 of generating metadata metadata may be generated from the functional characteristic factors extracted in the previous step S204 and the characteristic data.
  • the metadata may be generated based on the characteristic factor and characteristic data extracted in the step S104 of extracting the characteristic factor and the characteristic data described above with reference to FIG. 1 (S105).
  • the metadata S205 including the functional characteristic factors and the metadata S105 including the general characteristic factors may be generated as the same electronic file or may be generated as separate electronic files.
  • 5 is a flow chart of a secondary battery test method according to another embodiment.
  • 6 is a view of a secondary battery test method according to FIG. 5.
  • the secondary battery test method according to the present embodiment includes preparing a secondary battery (S301), testing a characteristic of the secondary battery (S302), and deriving measurement data. (S303), extracting characteristic data corresponding to characteristic factors from measurement data (S304), generating metadata from characteristic factors and characteristic data (S305), and changing test items (S306). Can be.
  • the secondary battery characteristics may be tested with respect to the first test item (S302).
  • the characteristics of the secondary battery may be tested for a predetermined time interval with respect to the first test item.
  • the characteristics of the secondary battery may be repeatedly tested for a predetermined time interval with respect to the first test item.
  • charging and discharging test items may be tested for charging and discharging during the first time period and testing for charging and discharging during the second time period.
  • the test item may be changed (S306).
  • the secondary battery test method may test the secondary battery characteristics for the second test item (S302). Repeating this, the secondary battery characteristics can be tested for a plurality of different test items for the same secondary battery. Referring to FIG. 6, for example, measurement data are derived by testing secondary battery characteristics with respect to charge and discharge items, transient response items, frequency response items, internal resistance items, and open voltage items for the same secondary battery. For each measurement data, characteristic factors and characteristic data can be extracted and metadata can be generated.
  • the secondary battery test method can generate metadata for different test items for the same secondary battery. For example, metadata may be generated for the first test item and metadata for the second test item for the same secondary battery.
  • the metadata generated for the first test item and the metadata generated for the second test item may be compared with each other to extract a correlation between the test items. Assuming that the same secondary battery has unique characteristics, this unique characteristic can be reflected in some characteristic factor of the first test item and simultaneously in other characteristic factors for the second test item. Although each test item and characteristic factor are set independently, certain characteristics of the secondary battery can affect simultaneously among the characteristic factors.
  • the secondary battery test method can extract the correlation between the test items and the characteristic factors by generating metadata for different test items for the same secondary battery and comparing them.
  • a method for extracting correlation any one of a statistical analysis method, a big data analysis method, a machine learning method, and a neural network method may be used.
  • the characteristic factors that can be extracted from the measurement data without applying a mathematical operation algorithm may be capacitance and voltage.
  • the capacitance corresponding to the predetermined section and the characteristic data corresponding thereto may be generated as metadata.
  • the capacitance may be graphically illustrated with the x-axis voltage as the y-axis.
  • the data shown in the graph can be fitted to a function, and functional characteristic factors and their characteristic data can be extracted therefrom.
  • the functional characteristics may include charge capacity, discharge capacity, coulomb efficiency, constant current charge amount, constant voltage charge amount, current reduction rate, discharge maximum power, discharge minimum power, output energy and the like.
  • the charging capacity may correspond to the x-axis width of the function corresponding at the time of charging
  • the discharge capacity may correspond to the x-axis width of the function corresponding to at the time of discharge.
  • the constant current charge amount may correspond to the x-axis width of the capacitance in a section in which a current is constantly applied during charging.
  • the constant voltage charge amount may correspond to the x-axis width of the capacitance in a section where the voltage is kept constant during charging.
  • the coulombic efficiency may be a ratio of the constant current charge amount to the constant voltage charge amount.
  • the current reduction rate may correspond to the time constant of the exponential function when the current graph is plotted as an exponential function and is plotted as an exponential function in a section where the voltage is kept constant during charging.
  • the maximum discharge maximum power the minimum value may correspond to the discharge minimum power.
  • the output energy may correspond to an integral value obtained by multiplying the voltage and the current by the total output energy during discharge.
  • FIG. 8 is a diagram of a secondary battery test method according to charge and discharge cycle items.
  • the characteristic factors that can be extracted from the measurement data without applying a mathematical operation algorithm may be time and voltage.
  • the time corresponding to the predetermined section and the characteristic data corresponding thereto may be generated as metadata.
  • the time may be graphically illustrated with the x-axis voltage as the y-axis.
  • the data shown in the graph can be fitted to a function, and functional characteristic factors and their characteristic data can be extracted therefrom.
  • the functional characteristics may include a rate of change of charge capacity, a rate of change of discharge capacity, a rate of change of coulomb efficiency, a rate of change of constant current charge, a rate of change of constant voltage charge, a rate of change of maximum power during discharge, a minimum rate of change of power during discharge, and a rate of change of output energy during discharge.
  • the secondary battery test method according to the present embodiment may be performed by repeatedly performing a plurality of charge and discharge items according to FIG. 7.
  • the charge capacity change rate may represent a rate of change of charge capacity for each cycle
  • the discharge capacity change rate may represent a rate of change of discharge capacity for each cycle.
  • the coulombic efficiency change rate represents the change rate of the coulombic efficiency for each cycle
  • the constant current charge change rate represents the change rate of the constant current charge amount for each cycle
  • the constant voltage charge change rate represents the rate of change of the constant voltage charge amount for each cycle
  • the maximum power change rate during discharge Represents the rate of change of the maximum power during discharge for each cycle
  • the rate of change of the minimum power during discharge represents the rate of change of the maximum power during discharge for each cycle
  • the rate of change of the output energy during discharge represents the rate of change of output energy during discharge for each cycle.
  • the rate of change may be calculated for each cycle or over time.
  • FIG. 9 is a diagram of a secondary battery test method according to a frequency response item.
  • measured data measured for a frequency response item may be graphically illustrated in a complex function region.
  • the graph can be shown as a Nyquist plot or Bode plot.
  • the x-axis of the graph may correspond to a real value of impedance, and the y-axis may correspond to an imaginary value of impedance. Therefore, each measurement point corresponds to the coordinate of the impedance, and the frequency value at which the impedance is measured is included in the measurement data.
  • the functional characteristics for the frequency response are: minimum value FR1, maximum value LM, minimum value FR2, maximum point FR3, series resistance, charge transfer resistance, diffusion resistance, and semicircle radius ratio. , Low frequency diffusion slope, impedance absolute value, impedance phase, and the like.
  • the impedance measurement data for the frequency response items are plotted and function-fitted in the complex plane, and the coordinate values of the lowest value (FR1), the maximum value (LM), the minimum value (FR2), and the maximum point (FR3) and the frequency data corresponding to the corresponding coordinate values.
  • the feature data can be extracted.
  • the characteristic data value corresponding to the series resistance may correspond to the real coordinate value of the lowest value FR1.
  • the charge transfer resistance may correspond to a ratio of the real coordinate value of the minimum value FR2 and the real coordinate value of the lowest value FR1.
  • the diffusion resistance may correspond to the ratio of the real coordinate value of the maximum point FR3 and the real coordinate value of the minimum value FR2.
  • the semi-circle radius ratio may correspond to the ratio of the imaginary value and the real value of the maximum value LM.
  • the low frequency spread slope may correspond to the slope of a function of linearly fitting a minimum value FR2 and a maximum point FR3.
  • FIG. 10 is a diagram of a secondary battery test method according to a transient response item.
  • characteristic factors that may be extracted from the measurement data without applying a separate mathematical algorithm may include a time of arrival, a voltage value, a step current value, and the like.
  • the characteristic data corresponding to the voltage value measured at each constant arrival time may be generated as metadata.
  • measured data measured for a transient response item may be illustrated.
  • the x-axis of the graph may correspond to time and the y-axis may correspond to resistance.
  • the graph can be fitted to the sum of two exponential functions.
  • the functional characteristics for the transient response may include series resistance, charge transfer resistance, diffusion resistance, short term time constant, long term time constant, TR1 coordinate, TR2 coordinate, and TR3 coordinate.
  • the TR1 coordinate is the time point when the step current is applied
  • the TR3 is the time point when the step current is applied
  • the TR2 may correspond to the midpoint of two exponential intervals when the graph is fitted with the sum of two exponential functions.
  • TR2 may correspond to the inflection point of the function.
  • the short and long time constants may correspond to the time constants of each of the two fitted exponential functions.
  • the series resistance may correspond to the resistance value of TR1
  • the charge transfer resistance may correspond to the difference between the resistance values of TR2 and TR1
  • the diffusion resistance may correspond to the difference between the resistance values of TR3 and TR2.
  • the characteristics of the secondary battery can be tested for the open voltage item.
  • the measurement data for the open voltage item may include an open voltage value and a measured time value measured for a predetermined time period. This measurement data is plotted on the x-axis as the time y-axis as the open-circuit value, and fitted with an exponential function to extract the functional characteristics.
  • the functional characteristic factors may include time constant values and limit values when the graph is fitted with an exponential function.
  • the characteristics of the secondary battery can be tested for the internal resistance item.
  • the characteristic factor for the internal resistance item may include at least one of an AC resistance value measured for a predetermined frequency, a predetermined time, and a DC resistance value measured for a constant current.
  • the control device 1000 may include a user input unit 1100, an output unit 1200, a control unit 1300, and a communication unit 1500.
  • the user input unit 1100 means a means for a user to input data for controlling the control device 1000.
  • the user input unit 1100 may include a keyboard, a mouse, a key pad, a dome switch, a touch pad (contact capacitive type, pressure resistive layer type, infrared ray). Sensing method, surface ultrasonic conduction method, integral tension measuring method, piezo effect method, etc.), jog wheel, jog switch, etc., but are not limited thereto.
  • the output unit 1200 may output an audio signal or a video signal.
  • the output unit 1200 may include an output unit for outputting a video signal or a sound output unit for outputting an audio signal.
  • the controller 1300 typically controls the overall operation of the control device 1000.
  • the controller 1300 may control the user input unit 1100, the output unit 1200, the communication unit 1500, and the like by executing programs stored in a memory (not shown).
  • the controller 1300 may generate a measurement sequence by selecting a sequence block provided by a measurement sequence management program installed in the control device 1000, or may receive a user's data through the user input unit 1100 and receive a new sequence block. Can be generated.
  • the controller 1300 may generate a measurement sequence including the sequence block by a measurement sequence management program installed in the control device 1000 and transmit the measurement sequence to the communication unit 1500.
  • the communication unit may transmit (I1) the control signal including the measurement sequence to the secondary battery measuring apparatus 2000.
  • the controller 1300 may output the generated measurement sequence and the generated measurement sequence to the output unit 1200 so that the user can check them in real time.
  • the sequence block means a unit unit corresponding to each secondary battery measurement test content.
  • the secondary battery measurement test may include, for example, six test items of charge / discharge test items, frequency response items, transient response items, DC resistance measurement items, AC resistance measurement items, and open voltage items, and each test item.
  • Specific test content may be included.
  • the specific test content of the secondary battery includes the charge capacity, discharge capacity, coulomb efficiency, constant current charge capacity, constant voltage charge capacity, current decay rate, maximum power during discharge, minimum power during discharge, total energy, charge and discharge efficiency, Complex impedance measurement value, DC resistance value, AC resistance value, open voltage value and the like.
  • the sequence block may be prepared in advance and stored in a memory (not shown).
  • the sequence blocks previously generated by the controller 1300 may be read from a memory (not shown), and the corresponding sequence blocks may be displayed on the output unit.
  • the program may previously store a plurality of sequence blocks that are expected to correspond to the secondary battery test item and the specific test content.
  • the user may select, edit and arrange sequence blocks through the user input unit 1100 to generate a measurement sequence as desired.
  • the user may generate a new sequence block through the user input unit 1100.
  • the measurement sequence management program provided by the controller 1300 may provide an interface for allowing a user to select, edit, and generate such sequence blocks.
  • the measurement sequence management program may provide any interface for allowing a user to arrange a sequence block to generate a measurement sequence.
  • the measurement sequence may include a sequence unit including a plurality of sequence blocks.
  • the sequence unit may be a unit group including a plurality of sequence blocks.
  • a secondary battery test item may include a charge / discharge item, a frequency response item, a transient response item, a DC resistance measurement item, an AC resistance measurement item, an open voltage item, and the like. Can correspond. Accordingly, in generating the measurement sequence, it may be easier for sequence management of the secondary battery test measurement to arrange the sequence blocks for each sequence unit, which is an intermediate group, than to arrange only the sequence blocks that are the basic unit units.
  • the sequence unit may correspond to any of the secondary battery characteristic test items that the user wants to measure.
  • the sequence unit may correspond to any one of charge / discharge items, frequency response items, transient response items, and open voltage items.
  • the sequence unit is not limited to correspond to only the test item described above.
  • the charge / discharge sequence unit may include a charge test sequence block and a discharge test sequence block.
  • the frequency response sequence unit may comprise a frequency test sequence block.
  • one test item can be repeatedly measured to confirm the characteristics of the test item. Therefore, when each test item is defined as a sequence unit, the measurement is repeated for each sequence unit by specifying the number of repetitions for each sequence unit. Can be facilitated.
  • the charge / discharge sequence unit may be specified to be repeated m times, and the frequency response sequence may be designated to be repeated n times. Therefore, once one measurement sequence is transmitted to the secondary battery measuring apparatus 2000, the charge / discharge sequence unit may be repeatedly tested m times, and the frequency response sequence may be repeatedly tested n times.
  • the communication unit 1500 may include one or more components for performing communication between the control device 1000 and the secondary battery measuring apparatus 2000.
  • the communication unit 1500 may include at least one of a local area communication unit, a mobile communication unit, and a direct connection unit.
  • the short-range wireless communication unit includes a Bluetooth communication unit, a Bluetooth low energy (BLE) communication unit, a near field communication unit (Near Field Communication unit), a WLAN (Wi-Fi) communication unit, a Zigbee communication unit, an infrared ray (IrDA) It may include, but is not limited to, a Data Association (W Association) communication unit, a WFD (Wi-Fi Direct) communication unit, an ultra wideband (UWB) communication unit, and an Ant + communication unit.
  • BLE Bluetooth low energy
  • Wi-Fi Near Field Communication unit
  • Zigbee communication unit Zigbee communication unit
  • IrDA infrared ray It may include, but is not limited to, a Data Association (W Association) communication unit, a WFD (Wi-Fi Direct) communication unit, an ultra wideband (UWB) communication unit, and an Ant + communication unit.
  • the mobile communication unit transmits and receives a radio signal with at least one of a base station, an external terminal, and a server on a mobile communication network.
  • the wireless signal may include various types of data according to transmission and reception of a voice call signal, a video call call signal, or a text / multimedia message.
  • the direct connection unit refers to a communication unit that transmits and receives data by physically connecting a plurality of devices, and is capable of transmitting and receiving data using various types of cables including a USB cable, a serial cable, a parallel cable, a LAN cable, and a data cable. It may include a communication unit.
  • the control device 1000 may further include a memory (not shown).
  • the memory (not shown) may be included in the controller 1300 or may be provided externally as a separate component from the controller 1300.
  • the memory may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (e.g. SD or XD memory, etc.), RAM (RAM, Random Access Memory (SRAM), Static Random Access Memory (ROM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Programmable Read-Only Memory (PROM), Magnetic Memory, Magnetic Disk, Optical Disk It may include at least one type of storage medium.
  • the memory may store at least one or more programs including a measurement sequence management program.
  • the memory may store a measurement data management program. Details will be described later with reference to FIGS. 17 to 19.
  • the secondary battery measuring apparatus 2000 may include a secondary battery test unit 2100 and a communication unit 2200.
  • the secondary battery measuring apparatus 2000 and the control device 1000 may be configured as separate apparatuses, but are not limited thereto and may be configured as the same apparatus.
  • the secondary battery test unit 2100 may test the characteristics of the secondary battery in order to confirm the characteristics of the secondary battery.
  • the secondary battery test unit 2100 may test the secondary battery characteristics with respect to at least one test item.
  • the test item may include, for example, a charge / discharge item, a transient response item, a frequency response item, a DC resistance measurement item, an AC resistance measurement item, an open voltage item, and a charge / discharge cycle item.
  • the test item is not limited to the above-described embodiment and may include various test items capable of testing the characteristics of the secondary battery.
  • the test item may correspond to the above-described sequence unit, but is not limited thereto.
  • the secondary battery test unit 2100 may perform specific test contents according to the test item.
  • the test contents of the secondary battery are, for example, charge capacity, discharge capacity, coulomb efficiency, constant current charge capacity, constant voltage charge capacity, current decay rate, maximum power during discharge, minimum power during discharge, total amount of energy, charge and discharge efficiency, complex Impedance measurement value, DC resistance value, AC resistance value, open voltage value and the like.
  • the test content may correspond to the above-described sequence block. Sequence blocks can be defined, created and edited by the user.
  • the communication unit 2200 which is a measurement target, may receive the control signal I1 received from the control device 1000 and transmit a result signal I2 including measurement data that is a result of testing the characteristics of the secondary battery. Since the detailed configuration of the communication unit 2200 may be substantially the same as the communication unit 1500 described above, overlapping contents are omitted.
  • the control signal I1 may include a measurement sequence.
  • the measurement sequence may be a command to instruct the secondary battery test unit 2100 to sequentially perform the measurement test of the secondary battery.
  • the measurement sequence may include the type of measurement test, the number of repetitions, and the measurement test sequence information.
  • the measurement sequence may include a plurality of sequence blocks.
  • the measurement sequence may include at least one sequence unit, and one sequence unit may include a plurality of sequence blocks.
  • the measurement sequence may include at least one sequence unit, and the at least one sequence unit may be designated a repetition frequency.
  • the measurement sequence may be assigned a repeat count. Details will be described later with reference to FIGS. 2 and 3.
  • the result signal I2 may include measurement data that is the result of a secondary battery measurement test performed according to a measurement sequence.
  • the result signal I2 may further include at least one of secondary battery information data and secondary battery test data.
  • the secondary battery information data means information related to the secondary battery to be measured.
  • the secondary battery information data may include product information and constituent material information.
  • the product information may include a product model name, serial number, form, specification, weight, volume, nominal capacity, and the like.
  • the constituent material information may include positive electrode information, negative electrode information, electrolyte information, and the like.
  • Such secondary battery basic information is only an example and is not limited to the above-described embodiment.
  • the secondary battery test data may include test date, time, location, test device type, test device model, and user information.
  • the test data may include test control variables.
  • the test control variable may include a test item, an open voltage, a charge current, a discharge current, a charge rate, a discharge rate, a charge degree, a temperature, a cycle, an AC perturbation current, and the like.
  • the result signal I2 may be transmitted to the control device 1000 in real-time while the secondary battery measuring apparatus 2000 performs the measurement sequence.
  • the user may check the test characteristics of the secondary battery in real time through the output unit. In this case, the user may be able to check the characteristics of the secondary battery without waiting for the delivered measurement sequence to be completed, thereby saving time and money.
  • the result signal I2 may be transmitted when the user transmits a control signal I1 requesting measurement data.
  • the secondary battery measuring apparatus 2000 includes a separate memory unit (not shown), and stores the measurement data derived in the process of performing the measurement sequence in the memory unit (not shown).
  • the measurement data read from the memory unit (not shown) may be transmitted as the result signal I2.
  • the control device 1000 and the communication unit of the secondary battery measuring apparatus 2000 do not always have to maintain a connected state, and the measurement data can be stored in a memory unit (not shown), thereby preventing data loss.
  • FIG. 12 is a diagram illustrating sequence blocks according to an embodiment. Referring to FIG. 2, sequence blocks corresponding to various types of secondary battery test items are shown.
  • the sequence block may be represented by an icon.
  • the sequence block may be displayed on the output unit as a block-shaped icon.
  • the measurement sequence management program provided by the controller 1300 may control the output unit 1200 to display the sequence block as an icon in the form of a block.
  • the user can select the corresponding secondary battery test by selecting the sequence block. For example, if a sequence block described as green C, 50% is selected, a charging test that charges the secondary battery by 50% can be selected.
  • the user can edit the sequence block to change the specific test conditions of the corresponding secondary battery test. For example, the sequence block described as green C, 50% can be edited and changed to a charging test for charging the secondary battery to 100%.
  • the controller 1300 may control the output unit 1200 such that the icon is displayed in a form reflecting the edit contents of the user.
  • the D icon represents a discharge test
  • the C / D icon represents a charge and discharge test
  • the FR icon represents a frequency test
  • the ACR icon represents an AC impedance measurement test
  • the TR icon represents a transient response test.
  • the DCR icon represents a DC resistance measurement
  • the OCV icon represents an open voltage measurement
  • the Rest icon represents a pause
  • the Cycle icon represents a cycle test
  • the T icon represents a temperature change and a measurement test item.
  • the user may add other test items as needed and generate a new sequence block corresponding thereto.
  • the measurement sequence management program provided by the controller 1300 may provide an editing tool for editing the icon form of the sequence block.
  • the measurement sequence 3000 may include a plurality of sequence blocks 3111, 3112, 3211, 3212, 3213, 3311, 3312, and 3313 and a plurality of sequence units 3100, 3200, and 3300.
  • a plurality of sequence units 3100, 3200, and 3300 may be assigned repetition numbers 3100-1, 3200-1, and 3300-1.
  • the measurement sequence management program provided by the controller 1300 may provide an interface for allowing a user to generate a measurement sequence by arranging the sequence blocks in a line. For example, the user may select a sequence block through the user input unit 1100 and drag and drop the sequence block to arrange the sequence block in the measurement sequence generation field. For example, when the sequence blocks are sequentially arranged from the left to the right, the secondary battery measurement test may be sequentially performed from the sequence blocks on the left. This is only an example and is not limited.
  • the measurement sequence management program provided by the controller 1300 may provide an interface for a user to generate a sequence unit.
  • the measurement sequence management program may provide an interface for allowing a user to create a sequence unit in the form of parentheses, figures, or regions.
  • the measurement sequence management program provided by the controller 1300 may provide an interface through which the user can designate the number of repetitions of the sequence unit.
  • the user may generate a sequence unit corresponding to the test item to be checked, and arrange the sequence block corresponding to the test item in the sequence unit.
  • the sequence unit may correspond to any one of a charge / discharge item, a transient response item, a frequency response item, an open voltage item, and a charge / discharge cycle item.
  • the measurement sequence 3000 may include a first sequence unit 3100, a second sequence unit 3200, and a third sequence unit 3300.
  • the first sequence unit 3100 may correspond to the charge / discharge test item, and the second sequence unit 3200 and the third sequence unit 3300 may correspond to the frequency response test item.
  • the first sequence unit 3100 may include a charge test sequence block 3111 and a discharge test sequence block 3112.
  • the charging test sequence block 3111 can be arranged on the left side of the discharge test sequence block 3112 to determine the sequence order.
  • the charge test sequence block 3111 may be performed in preference to the discharge test sequence block 3112, and the discharge test sequence block 3112 may be sequentially performed.
  • the repetition number 3100-1 of the first sequence unit 3100 may be designated.
  • the repetition number 3100-1 of the first sequence unit 3100 may be designated as nine.
  • the second sequence unit 3200 may include a charge test sequence block 3211, a pause sequence block 3212, and a frequency test sequence block 3213.
  • the repetition number 3200-1 may be set to 5 in the second sequence unit 3200.
  • the third sequence unit 3300 may include a discharge test sequence block 3311, a pause sequence block 3212, and a frequency test sequence block 3313.
  • the repetition number 3300-1 of the third sequence unit 3300 may be designated as five.
  • the measurement sequence management program provided by the controller 1300 may designate a repetition number 3000-1 of the entire measurement sequence generated by the user.
  • the measurement sequence 3000 may have a repetition number 3000-1 of 1000.
  • the repetition number 3000-1 of the measurement sequence 3000 means that all the sequence units 3100, 3200, and 3300 included in the measurement sequence 3000 and the sequence blocks 3111, 3112, 3211, 3212 and 3213 are included.
  • the measurement sequence 3000 may be repeatedly performed by the repetition number 3000-1. It means a number indicating.
  • the measurement sequence 3000 may be generated and edited by a measurement sequence management program.
  • the measurement sequence management program provides an interface for easily and repeatedly performing the secondary battery measurement test based on the iconized sequence block and the sequence unit and the measurement sequence, and can be controlled by the control unit (1300 of FIG. 11). have.
  • 14 is a flowchart illustrating a secondary battery test method, according to an exemplary embodiment.
  • 15 is a flowchart illustrating a method of generating a measurement sequence, according to an exemplary embodiment.
  • the user may arrange the at least two sequence blocks to generate the measurement sequence.
  • the user may select and arrange at least two of the sequence blocks shown in the output unit through the user input unit 110 (110 of FIG. 11) on the measurement sequence.
  • the measurement sequence management program may provide an interface for a user to arrange a sequence block to generate a measurement sequence.
  • the measurement sequence management program may display a prestored sequence block to an output unit according to a user input, and display a measurement sequence field being generated on the screen.
  • the user may arrange the sequence block through the user input unit in the measurement sequence column. For example, the user may click or drag and drop the sequence block to arrange it in the measurement sequence column.
  • the user may generate at least one sequence unit to generate the measurement sequence.
  • At least one sequence unit may include at least two sequence blocks.
  • the sequence unit includes at least two sequence blocks, and the sequence unit may correspond to a secondary battery test item. If the sequence block is a unit unit, the sequence unit may correspond to a unit group including the unit unit.
  • the measurement sequence management program may provide an interface for a user to generate a measurement unit by generating a sequence unit.
  • the user may generate a sequence unit in the measurement sequence column through the user input unit 110 of FIG. 11.
  • the sequence unit may be represented by parentheses, figures, regions, or the like.
  • the sequence unit may be generated in the measurement sequence generation column displayed on the output unit, and at least two of the sequence blocks shown in the output unit may be selected and arranged in the sequence unit.
  • the user may designate a repetition frequency differently for each sequence unit. It is also possible not to specify the repeat count of the sequence unit. The user can specify the number of repetitions in the measurement sequence. It is also possible not to specify the number of repetitions of the measurement sequence.
  • a measurement sequence is generated by a user, or a user generates a sequence block through a user input unit (S401-1), and a user generates a sequence unit through a user input unit (S401). -2), the generated sequence unit can be arranged to generate a measurement sequence (S401-3).
  • the user may generate, select, and edit a sequence block according to an interface provided by the measurement sequence management program (S401-1).
  • the user may generate a sequence unit according to an interface provided by the measurement sequence management program in operation S401-2.
  • the generating of the sequence unit (S401-2) may be performed by providing a sequence unit represented by parentheses, figures, regions, and the like, and arranging at least two sequence blocks in the sequence unit.
  • the measurement sequence may be generated by arranging the generated sequence units (S401-3). 5 is only an embodiment and is not limited to the order described. Instead of generating a sequence unit, a measurement sequence can be generated using only a sequence block. Furthermore, the step of specifying the repetition frequency of the sequence unit or the step of specifying the repetition frequency of the measurement sequence may be additionally included.
  • the measurement sequence may be designated by the user input unit.
  • the user may designate a repetition frequency of the measurement sequence. It may be possible to instruct the secondary cell characteristic test to be performed repeatedly by the designated number of repetitions rather than by performing the measurement sequence once.
  • the transferring of the generated measurement sequence to the secondary battery measuring apparatus may be a step in which the control device 1000 of FIG. 11 delivers the measuring sequence to the secondary battery measuring apparatus 2000 of FIG. 11.
  • the measurement sequence generated by the user may be transmitted to the communication unit 1500 under the control of the control unit 1300 of FIG. 11 and transmitted to the secondary battery measuring apparatus 2000 of FIG. 11.
  • the control device 1000 of FIG. 11 may receive the measurement data of the secondary battery in real time while the secondary battery measuring apparatus 2000 of FIG. 11 performs the secondary battery test according to the measurement sequence.
  • the control device 1000 of FIG. 11 may asynchronously receive measurement data of a secondary battery stored in a memory unit (not shown) of the secondary battery measuring apparatus 2000 of FIG. 11.
  • the control device 1000 of FIG. 11 may transmit a control signal I1 to the secondary battery measuring apparatus 2000 of FIG. 11 according to a user's request.
  • the secondary battery measuring apparatus 2000 of FIG. 11 may receive the control signal I1 and transmit measurement data stored in the memory unit (not shown) to the control device 1000 of FIG. 11.
  • the received measurement data may be generated as metadata by processing the measurement data. Since the contents related to the generation of the metadata are the same as described above with reference to FIGS. 1 to 10, redundant descriptions are omitted.
  • FIG. 16 is a flowchart illustrating a secondary battery test method according to another embodiment.
  • the control device 1300 may convert the measured data received by the controller 11000 into a graph and display the measured data on the output unit. For example, when the measurement data is transmitted in real time to the control device 1000 of FIG. 11, the graph may be updated to reflect the measurement data continuously transmitted. For example, when the measurement data is transmitted asynchronously to the control device 1000 of FIG. 11, the graph may show a graph reflecting the received measurement data.
  • the controller 1300 of FIG. 1 may show a graph without converting the measurement data into a mathematical algorithm.
  • the controller 1300 of FIG. 11 may show a graph using numerical values obtained by converting measurement data into a mathematical algorithm.
  • the measurement sequence management program 700 includes a measurement sequence management unit 710, a graph display unit 720, a control panel 730, a status display unit 740, a secondary battery basic information display unit 750, The test condition display unit 760 and the measurement data display unit 770 may be included.
  • the measurement sequence manager 710 may generate and edit a measurement sequence and display a current measurement sequence.
  • a bar indicating the progress state may be shown together.
  • the graph showing unit 720 may be a graph according to the measurement data.
  • the control panel 730 may include various control icons for controlling the measurement sequence management program 700.
  • the control panel 730 may perform a function of transmitting, storing, loading a measurement sequence, stopping a measurement test, displaying a graph, terminating a program, and changing a setting.
  • the state display unit 740 may reflect and display in real time the state of various variables applied to the secondary battery under test by the secondary battery measuring apparatus (2000 of FIG. 11).
  • the status display unit 740 may display variables such as voltage, current, time, temperature, and the like and the corresponding numerical values.
  • the secondary battery basic information display unit 750 may display basic information related to the secondary battery under test.
  • the basic information may include at least one of product information and constituent material information.
  • the product information may include a product model name, serial number, form, specification, weight, volume, nominal capacity, and the like.
  • the constituent material information may include positive electrode information, negative electrode information, electrolyte information, and the like.
  • Such secondary battery basic information is only an example and is not limited to the above-described embodiment.
  • the test condition display unit 760 may display test conditions related to the secondary battery under test.
  • the test conditions may include test date, time, location, test device type, test device model, and user information.
  • test conditions may include test control variables.
  • the test control variable may include a test item, an open voltage, a charge current, a discharge current, a charge rate, a discharge rate, a charge degree, a temperature, a cycle, an AC perturbation current, and the like.
  • the measurement data display unit 770 may show measurement data received from the secondary battery measuring apparatus 2000 of FIG. 11.
  • the measurement data display unit 770 may be linked to the graph display unit 720.
  • some of the numerical values of the measurement data displayed on the measurement data display unit 770 may be shown as graphs in the graph drawing unit 720 with a portion as the x-axis and a portion as the y-axis.
  • the control unit 1300 of FIG. 11 may include a measurement data management program separate from the measurement sequence management program.
  • the measurement data management program may include a function of graphing or metadataizing the measurement data. Referring to FIG. 18, the measurement data management program may show a plurality of separate graphs for each test item in the same output unit. Referring to FIG. 19, the measurement data management program may compare measurement data for different test items or compare graphs.

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Abstract

Un procédé de test de batterie secondaire selon la présente invention comprend les étapes suivantes : préparation d'une batterie secondaire ; test d'une caractéristique de la batterie secondaire par rapport à un élément de test ; obtention de données de mesure ; extraction de données caractéristiques correspondant à un facteur caractéristique prédéfini à partir des données de mesure ; et génération de métadonnées.
PCT/KR2017/012354 2016-12-01 2017-11-02 Procédé de test de batterie secondaire utilisant des métadonnées WO2018101620A1 (fr)

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KR1020160162920A KR101888125B1 (ko) 2016-12-01 2016-12-01 측정시퀀스를 이용한 2차 전지 시험 방법 및 제어 디바이스
KR10-2016-0162920 2016-12-01
KR1020160162918A KR101952406B1 (ko) 2016-12-01 2016-12-01 메타데이터를 이용한 2차 전지 시험 방법
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