WO2021066393A1 - 병렬 연결 셀의 연결 고장 검출 방법 및 시스템 - Google Patents
병렬 연결 셀의 연결 고장 검출 방법 및 시스템 Download PDFInfo
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- WO2021066393A1 WO2021066393A1 PCT/KR2020/013013 KR2020013013W WO2021066393A1 WO 2021066393 A1 WO2021066393 A1 WO 2021066393A1 KR 2020013013 W KR2020013013 W KR 2020013013W WO 2021066393 A1 WO2021066393 A1 WO 2021066393A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/12—Measuring rate of change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/3644—Constructional arrangements
- G01R31/3646—Constructional arrangements for indicating electrical conditions or variables, e.g. visual or audible indicators
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
- G01R31/3835—Arrangements for monitoring battery or accumulator variables, e.g. SoC involving only voltage measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/54—Testing for continuity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/74—Testing of fuses
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/185—Electrical failure alarms
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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
- H01M10/44—Methods for charging or discharging
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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
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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
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/512—Connection only in parallel
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
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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
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- 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 invention relates to a method and system for detecting a connection failure of a parallel connected cell, and more specifically, a parallel connection cell capable of detecting disconnection of a specific cell due to an operation of a protection element such as a CID or a parallel connection line of the cell. It relates to a connection failure detection method and system.
- rechargeable secondary batteries are not only in the field of small-sized high-tech electronic devices such as smart phones, notebook computers, and tablet PCs, but also in various fields ranging from electric bicycles, electric vehicles, and energy storage systems (ESS). It is widely used.
- a battery cell included in a battery pack has a CID (current interruption device) that cuts off when the internal pressure of the cell increases as a protection device to ensure safety during charging and prevents current from flowing through the battery. It is configured to safely prevent overcharging.
- CID current interruption device
- Patent Document 1 KR10-2017-0064608 A1
- the present invention is to solve the above-described problem, and an object of the present invention is to provide a method for detecting a disconnection of a connection due to a CID operation or a parallel connection line of a specific cell among battery cells connected in parallel.
- a current interruption device (CID) operation or a parallel connection line open condition is generated in a battery being discharged, and thus reference data in case a cell connection failure occurs.
- an abnormality notification step of generating and notifying the abnormal signal indicating this is generated; It is configured to further include.
- connection failure detection reference data acquisition step The driving discharge reference data acquisition step, the connection failure point reference data acquisition step, and the primary connection failure detection reference data acquisition step are repeated at least a predetermined number of times, and a machine learning technique for a plurality of primary connection failure detection reference data obtained through this
- a final connection failure detection reference data acquisition step of finally obtaining data on a change amount of a discharge voltage value in a CID operation or an open area of a parallel connection line by applying the signal It characterized in that it is configured to include.
- the first detection step of the cell connection failure from the measured driving discharge data monitored in the monitoring step, compare whether there is a section matching the final connection failure detection reference data acquired in the final connection failure detection reference data acquisition step.
- a matching step of comparing As a result of the comparison, if there is a section matching the final connection failure detection reference data from the measured driving discharge data, the section is determined as a section in which the amount of change in the discharge voltage value has occurred due to CID operation or parallel connection line opening.
- a connection failure primary determination step characterized in that it is first determined that a cell connection failure has occurred due to a CID operation or a parallel connection line open in the corresponding battery; It characterized in that it is configured to include.
- the final detection step of the cell connection failure is a charging current that forms a charging current in the battery, which is first detected as a cell connection failure state due to a CID operation or a parallel connection line open in the first detection step of the cell connection failure.
- Failure final determination step It characterized in that it is configured to include.
- the driving discharge reference data is an amount of change in a discharge voltage value for the reference battery
- the connection failure point reference data is a discharge voltage value generated by a CID operation or a parallel connection line open with respect to the reference battery. It is characterized in that the amount of change.
- a system for detecting a connection failure of a parallel connected cell includes: at least one battery including at least one or more cells connected in parallel; A voltage measuring unit measuring a discharge voltage of the battery at predetermined periodic intervals; A monitoring unit for monitoring actual driving discharge data derived as an analog signal in a waveform form based on the discharge voltage value measured by the voltage measuring unit; A memory unit storing reference data for detecting whether a cell connection failure due to a current interruption device (CID) operation or an open parallel connection line has occurred in the battery; Using the reference data stored in the memory unit, it is determined whether there is a section in the actual driving discharge data monitored by the monitoring unit that matches the amount of change in the discharge voltage value due to the CID operation or parallel connection line opening of the reference data.
- CID current interruption device
- a cell connection failure primary detection unit that detects and primarily detects whether a cell connection failure has occurred due to a CID operation or an open parallel connection line in the corresponding battery; The cell connection failure primary detection unit checks whether the result of the first detection as a cell connection failure state is appropriate, and finally determines whether a cell connection failure due to CID operation or parallel connection line opening has occurred in the corresponding battery.
- a cell connection failure final detection unit that detects as a result; Consists of including.
- the reference data stored in the memory unit is configured to include final connection failure detection reference data
- the final connection failure detection reference data is a discharge voltage value of a battery generated when a CID operation or a parallel connection line is opened. It is characterized in that the amount of change.
- the first cell connection failure detection unit may include a match comparison unit comparing whether a section coinciding with the final connection failure detection reference data exists among the actual driving discharge data of the battery monitored by the monitoring unit; As a result of the comparison, if there is a section in the actual measured driving discharge data that matches the final connection failure detection reference data, it is detected as a section in which the amount of change in the discharge voltage value has occurred due to CID operation or parallel connection line opening, and the corresponding A connection failure primary determination unit that first determines that a cell connection failure has occurred due to a CID operation or a parallel connection line open in the battery; A cell that generates and outputs a cell connection failure primary detection signal indicating this when the first connection failure determination unit determines that a cell connection failure has occurred due to a CID operation or a parallel connection line open in the corresponding battery.
- a connection failure primary detection signal generator It characterized in that it is configured to include.
- the cell connection failure final detection unit may include a DCIR measurement unit measuring DCIR (Direct Current Internal Resistance) of the battery in a state in which a charging current is passed through the battery corresponding to the cell connection failure primary detection signal; A DCIR comparison unit comparing whether the DCIR value measured by the DCIR measurement unit is out of a predetermined DCIR reference range; As a result of the comparison of the DCIR comparator, if the DCIR value of the battery corresponding to the cell connection failure primary detection signal is out of a predetermined DCIR reference range, a cell connection failure due to CID operation or parallel connection line open to the corresponding battery A connection failure final determination unit that finally determines that the state has occurred and generates and outputs a final cell connection failure detection signal indicating this; It characterized in that it is configured to include.
- DCIR Direct Current Internal Resistance
- a notification unit for generating and outputting an abnormal signal is configured to further include.
- the measured driving discharge data is characterized in that the amount of change in the discharge voltage value.
- a cell connection failure state by CID operation or parallel connection line open is detected in real time, and DCIR measurement of the battery is performed.
- the first detection result can be double-checked. Accordingly, it is possible to detect a cell connection failure state due to a CID operation or a parallel connection line open with improved accuracy. Accordingly, it is possible to prevent battery deterioration and performance degradation that may be caused by disconnection (failure) of a specific cell due to a CID operation or a parallel connection line opening by facilitating a response thereto.
- FIG. 1 is a diagram illustrating an example of an analog signal in a waveform form according to a change in a discharge voltage value generated for a battery being discharged according to the operation of a vehicle.
- FIG. 2 is a diagram illustrating an example of converting the analog signal in the form of a waveform shown in FIG. 1 into a form of a linear function.
- FIG. 3 is a diagram schematically showing a principle of acquiring reference data capable of detecting a CID operation or an open state of a parallel connection line from an analog signal in the form of a waveform.
- FIG. 4 is a flowchart illustrating a method of detecting a connection failure of a parallel connection cell according to the present invention.
- FIG. 5 is a block diagram schematically showing a system for detecting a connection failure of a parallel connection cell according to the present invention.
- the battery in the present invention has a structure in which at least one or more cells are connected in parallel, and can be mounted and used in all devices using batteries, including, for example, a car, a scooter, an electric kickboard, and an energy storage system (ESS).
- batteries including, for example, a car, a scooter, an electric kickboard, and an energy storage system (ESS).
- ESS energy storage system
- a vehicle battery mounted on a vehicle and supplying power to a power motor will be described as an example.
- the reference battery used in the present invention refers to a battery used in an experiment process of acquiring reference data for detecting a CID operation or an open state of a parallel connection line, and the measured battery is a battery mounted in an actual vehicle. Means.
- the driving discharge reference data is an amount of change in a discharge voltage value obtained with respect to a battery being discharged through a predetermined experiment, which means change values in a discharge voltage value represented by an analog signal in a waveform shape as shown in FIG. 1.
- the reference data at the point of connection failure is the amount of change in the discharge voltage value that occurs when the CID operation or parallel connection line is opened, which is obtained through a predetermined experiment, and this is the change in the discharge voltage value in the form of a linear function as shown in FIG. Among the values, it refers to the amount of change in the discharge voltage value in the area A that occurs when the CID operation or the parallel connection line is opened.
- the actual driving discharge data is an amount of change in a discharge voltage value obtained with respect to a battery being discharged according to an actual operation of a vehicle, which means change values of a discharge voltage value represented by an analog signal in the form of a waveform as shown in FIG. 1.
- the above-described driving discharge reference data and actual driving discharge data are used to distinguish whether the amount of change in the discharge voltage value obtained in the course of a predetermined experiment for preparing the reference data or the amount of change in the discharge voltage value obtained according to the actual driving of the vehicle. It is a term used for.
- These data are derived as, for example, analog signals in the form of a dynamic waveform as shown in FIG. 1.
- the external device referred to in the present invention is an apparatus equipped with an electric power motor and means, for example, a motor vehicle.
- the present invention is not limited thereto, and the external device may be any device using a battery, such as an energy storage system (ESS), a scooter, and an electric kickboard, as well as a vehicle.
- ESS energy storage system
- scooter scooter
- electric kickboard as well as a vehicle.
- a method of detecting a failure of a parallel connected cell according to the present invention includes the following steps.
- the reference data acquisition step is a step of acquiring reference data when a cell connection failure occurs by generating a CID operation or a parallel connection line open situation in the battery being discharged, and may include the following detailed steps. have.
- the battery in the present invention is, for example, a vehicle battery that is mounted on a vehicle to supply power to a power motor
- the external device may mean a vehicle equipped with a power motor.
- discharging is a state in which power is supplied to the electric motor of the car.This is because the degree to which power is supplied from the battery to the electric motor dynamically changes according to the style of stepping on the car's accelerator. As shown in FIG. 1, it is derived as a waveform that has various widths of change and decreases.
- the driving discharge reference data acquisition step is to acquire the amount of change in the discharge voltage value derived as an analog signal in the form of a waveform as shown in FIG. 1, and for this purpose, a reference battery composed of cells connected in parallel is mounted on an external device. By discharging in one state and measuring the discharge voltage at predetermined periodic intervals, driving discharge reference data as a change amount over time may be obtained based on the measured discharge voltage values.
- a cell connection failure occurs by generating a CID (current interruption device) operation or an open parallel connection line in any one cell while the driving discharge reference data acquisition step (S110) is in progress.
- This is a step of acquiring the amount of change in the discharge voltage value that occurs in the case of the state.
- the change in the discharge voltage value of the battery is shown in FIG. It can be derived as an analog signal in the form of a waveform as shown. If the intermediate value or the average value of the corresponding discharge voltage value is selected and taken for each detailed section of the analog signal, the analog signal in the waveform form of FIG. As shown in Figure 2, it can be converted to a declining linear function form.
- the discharge voltage values dynamically change in the waveform type analog signal as shown in Fig. 1, even if there is an area corresponding to the same amount of change as in the area A of Fig. 2, the amount of change is caused by the CID operation or the parallel connection line open. Although it is very difficult to detect whether or not, it is possible to easily distinguish the A region in the form of a linear function as shown in FIG. 2.
- connection failure time obtained in this way that is, the amount of change in the discharge voltage value corresponding to the area A of FIG. 2 may be referred to as reference data at the connection failure time.
- the driving discharge reference data obtained in the driving discharge reference data acquisition step (S110) and the connection failure time reference data acquired in the reference connection failure time reference data acquisition step (S120) are used.
- the data obtained primarily for the area B may be referred to as reference data at the time of the primary connection failure and described.
- the above-described driving discharge data reference acquisition step (S110), the connection failure point reference data acquisition step (S120), and the primary connection failure detection reference data acquisition step (S130) are repeated a plurality of the above.
- a number of reference data at the time of primary connection failure which is the amount of change in the discharge voltage value corresponding to region B of FIG. 3, and applying a machine learning technique to the obtained reference data at the time of primary connection failure, FIG. 3 Data on the amount of change in the discharge voltage value corresponding to region B of (final connection failure reference data) can be finally obtained.
- the battery discharge voltage value generated according to the actual operation of the vehicle differs in driving style for each user (driver)
- the range of the change amount of the discharge voltage value generated accordingly will be very diverse. Accordingly, even if the change in the discharge voltage value is derived from various examples according to various driving styles, in order to detect the amount of change in the discharge voltage value that occurs due to a connection failure due to CID operation or parallel connection line open therefrom, S110 to The final connection failure detection data is obtained by learning the amount of change in area B of FIG. 3 by applying a machine learning technique to obtain a large number of data according to various cases while repeating S130 and derive the reference values for the plurality of data. By obtaining, it is possible to detect, in real time, a battery in which a cell connection failure due to a CID operation or a parallel connection line open among the batteries mounted therein during actual vehicle operation has occurred.
- the final connection failure detection reference data obtained as described above is stored in the memory unit 400 to be described later, and is used as reference data to enable real-time detection of connection failure due to CID operation or parallel connection line opening. do.
- the discharge voltage value according to the operation of the external device is measured at predetermined periodic intervals with respect to the battery mounted on an external device (eg, a vehicle) and being discharged according to the operation of the external device, and the measured This is the step of monitoring the amount of change based on the discharge voltage value.
- the amount of change in the discharge voltage value derived from the analog signal in the form of a waveform as shown in FIG. 1 is monitored, and the amount of change in the discharge voltage value is referred to as actual driving discharge data.
- This step is performed by the monitoring unit 300 to be described later.
- a step of secondary detection it may be configured to include the following detailed steps.
- the actual battery being discharged according to the operation of an external device is derived as an analog signal in the form of a waveform as shown in Fig. 1 in which the shape of the change in the discharge voltage value.
- Fig. 1 the shape of the change in the discharge voltage value.
- FIG. 3 it is compared whether there is a section coincident with the amount of change in the discharge voltage value in region B of FIG. 3 corresponding to the final connection failure detection reference data.
- Such a step is performed by the match comparison unit 510 to be described later.
- the corresponding section is referred to as the CID operation of at least one cell of the measured batteries or It is determined as a section in which the amount of change in the discharge voltage value decreases due to the occurrence of the parallel connection line open, and a cell connection failure primary detection signal for the measured battery may be generated and output.
- the corresponding section is at least one of the measured batteries. It is determined as the section in which the amount of change in the discharge voltage value has decreased due to the operation of the CID of any one cell or the opening of a specific parallel connection line, and generates and outputs a cell connection failure primary detection signal for the actual battery indicating this. .
- This step is performed by the connection failure primary determination unit 520 and the cell connection failure primary detection signal generation unit 530 to be described later.
- the cell connection failure primary detection signal may include a bank identification number for identifying a battery bank to which a corresponding measured battery belongs.
- the battery bank is a bundle of cells composed of a plurality of measured batteries, and a CID operation or parallel connection line open is measured using the bank identification number included in the cell connection failure primary detection signal.
- a battery bank including a battery can be detected.
- the cell connection failure primary detection signal may include a battery identification number to identify a corresponding actual battery.
- the battery is normally connected to a cell in which a cell connection failure condition has not occurred due to CID operation or parallel connection line open. It may be determined to be in a state (S330).
- the final cell connection failure detection step includes the primary detection of a battery that is primarily detected as a cell connection failure state by a CID operation or a parallel connection line open in the cell connection failure first detection step (S300). As a step of checking whether the result is correct and finally detecting whether the battery is in a cell connection failure state due to CID operation or parallel connection line open, it may be configured including the following detailed steps. (Cell connection failure final detection unit, 600)
- a charging current is formed in the actual battery, which is first detected as a cell connection failure state due to a CID operation or parallel connection line open, which is, for example, an external charger.
- a charging current may be supplied to the battery through the connection of a power generation circuit (not shown) of the vehicle to form a charging current in the measured battery that is first detected as a cell connection failure state.
- the DCIR measurement step is a step of measuring the DCIR value of the battery bank including the actual battery in which the CID operation or the parallel connection line is opened while the charging current flows through the battery through the charging current forming step (S410). .
- the DCIR Direct Current Internal Resistance
- the DCIR is a battery internal resistance value, which can be measured only in an initial state in which a charging current is passed through connection of an external charger or a power generation circuit (not shown) of a vehicle. Therefore, in the initial state in which a charging current was formed in the battery bank (Example 1) or the actual battery (Example 2) that was first detected as a cell connection failure state through the charging current forming step (S410), the DCIR It may be configured to proceed with the measurement step to measure the DCIR value. The DCIR value measured in this way is used to finally determine whether the result of the primary detection is correct as the cell connection failure state.
- This step is performed by the DCIR measurement unit 610 of the cell connection failure final detection unit 600 to be described later.
- the DCIR comparison step it is possible to compare whether the DCIR value of the actually measured battery, which is initially detected as a cell connection failure state measured through the DCIR measurement step S420, is out of a predetermined DCIR reference range.
- the cell connection failure primary detection signal includes a bank identification number of a battery bank including a battery (cell) in which a connection failure condition has occurred due to a CID operation or a parallel connection line open
- the cell It is possible to identify a battery bank that is detected primarily as a connection failure state, and to identify a DCIR value measured for the battery bank, and compare whether the DCIR value is out of a predetermined DCIR reference range.
- ⁇ Embodiment 2 When detecting a battery cell>
- the cell connection failure primary detection signal includes the battery identification number of the actual battery, the battery first detected in the cell connection failure state by using this It is possible to identify, identify the DCIR value measured for the battery, and compare whether the DCIR value is outside a predetermined DCIR reference range.
- This step is performed by the DCIR comparison unit 620 of the cell connection failure final detection unit 600 to be described later.
- the first detected result is correct as a cell connection failure state with respect to the battery bank or the actual battery. It is determined that the cell connection failure state is finally determined, and a final detection signal of the cell connection failure state indicating this may be output.
- the cell connection failure final detection signal may include a bank identification number capable of identifying a corresponding battery bank including an actual battery in which a CID operation or parallel connection line open has occurred.
- the cell connection failure final detection signal may include a battery identification number of a corresponding actual battery.
- connection failure final determination unit 640 of the cell connection failure final detection unit 600 is achieved by the connection failure final determination unit 640 of the cell connection failure final detection unit 600 to be described later.
- the DCIR value of the actual battery corresponding to the first detection signal of the cell connection failure is within a predetermined reference range, it is determined that the cell connection failure has occurred due to the CID operation or the parallel connection line open in the corresponding battery. It may be configured to monitor the state of the battery with more careful attention by recognizing it as a suspected cell connection failure state (S450) without being determined.
- the abnormality notification step when the cell connection failure final detection signal is output through the cell connection failure final detection step (S400), a cell connection failure due to a CID operation or parallel connection line opening has occurred in the corresponding actual battery. It can be notified by generating an indicated abnormal signal. This is performed by the abnormality notification unit 700
- the user can recognize and cope with the abnormality in the connection state of the battery in real time.
- the abnormal signal may include a battery bank including a battery in which a cell connection failure has occurred due to a CID operation or a parallel connection line open, or an identification number of a corresponding battery.
- connection failure detection reference data acquisition step S140
- Baseline data by machine learning can be enriched and enriched.
- an analog signal generated while a vehicle battery is discharging is a complex waveform that includes both the discharge voltage values that dynamically change and the discharge voltage values that change accordingly when the CID operation or parallel connection line is opened. Since it is difficult to detect a region corresponding to the amount of change in the discharge voltage value due to the parallel connection line open, it is difficult to detect a connection failure (disconnection) state of the cell, and thus, there is a problem of promoting cell degeneration.
- the present invention obtains reference data on the amount of change in the discharge voltage value generated when the CID operation or the parallel connection line is opened through the above-described experiment, and by using this, an analog signal in the form of a complex waveform generated during discharging.
- the area corresponding to the amount of change in the discharge voltage value due to the CID operation or opening of the parallel connection line can be detected. Accordingly, it is possible to detect in real time a state of a cell connection failure occurring in the battery being discharged. Accordingly, it is possible to prevent battery deterioration and performance degradation that may be caused by disconnection (failure) of a specific cell due to a CID operation or a parallel connection line opening by facilitating a response thereto.
- the system for detecting a connection failure of a parallel-connected cell may include one or more batteries including one or more battery cells 110, and the battery cells are connected in parallel, thereby making electrical connection between the battery cells.
- the battery may be a battery mounted and used in devices such as a vehicle, an energy storage system (ESS), a scooter, and an electric kickboard, and in this specification, a vehicle battery that is mounted on a vehicle and supplies power to an electric motor is described as an example. do.
- ESS energy storage system
- scooter scooter
- electric kickboard a vehicle battery that is mounted on a vehicle and supplies power to an electric motor
- the voltage measuring unit is configured to measure the discharge voltage value of the battery at predetermined periodic intervals, and based on the discharge voltage value measured by the voltage measuring unit, the measured driving discharge data, which is the amount of change in the discharge voltage value of the battery, can be obtained. I can.
- the monitoring unit monitors the amount of change in the discharge voltage value of the battery derived as an analog signal in a waveform shape as shown in FIG. 1 based on the discharge voltage value measured by the voltage measuring unit 200 at predetermined periodic intervals. It is a configuration.
- the amount of change in the discharge voltage value of the battery can be derived as an analog signal in the form of a waveform in FIG.
- the amount of change in voltage value (actual driving discharge data) is monitored in real time.
- the reference data includes the final connection failure detection reference data as a change in the discharge voltage value generated by the CID operation or the parallel connection line open.
- the discharge voltage value corresponding to the area B of FIG. It means the amount of change.
- the process of acquiring the final connection failure detection reference data stored in the memory unit will be described.
- a change amount (driving discharge reference data) of the generated battery discharge voltage value is acquired.
- the battery in the present invention is, for example, a vehicle battery that is mounted on a vehicle and supplies power to a power motor.
- discharging is a state in which power is supplied to the electric vehicle's electric motor. This is because the degree of power supplied from the battery to the electric motor dynamically changes according to the style of stepping on the car's accelerator. As shown in FIG. 1, it is derived as a waveform that has various widths of change and decreases.
- a CID operation or an open condition of a specific parallel connection line occurs in any one cell, resulting in a discharge voltage value that occurs when the cell connection is in a failure state.
- the amount of change (data based on the connection failure point) is acquired.
- the reason for performing this process is that, as described above, when the battery is discharged according to the operation of the electric vehicle, the degree of supplying power to the power motor varies according to the style of stepping on the excel. It is derived as an analog signal in the form of a waveform as shown in FIG. 1.
- the actual driving discharge data and the connection failure point reference data are obtained through the above-described process, they are summed over the same time period, and from the change in the discharge voltage value derived as an analog signal in the waveform form shown in FIG. 1, the CID operation or Reference data capable of detecting whether a change in a discharge voltage value occurring due to an open parallel connection line is present may be obtained primarily.
- the variation in the discharge voltage value corresponding to the area B shown in FIG. It is acquired primarily.
- the memory unit may also store DCIR reference range data, which is used as reference data for final determination of whether a result of the first detection in a cell connection failure state with respect to the battery is correct.
- the final detection data of the battery which is finally detected as a cell connection failure due to a CID operation or a parallel connection line open, is received from the cell connection failure final detection unit 600 to be described later, and reflected in the reference data to be stored. I can.
- the reference data previously stored in the memory unit is data obtained by artificially generating a cell connection failure state
- the data (final detection data) in the case of a cell connection failure state in an actual situation is converted to the final cell connection failure state.
- the reference data can be more precisely secured.
- the cell connection failure detection unit In the cell connection failure primary detection unit, the cell connection failure detection unit generates a section coincident with the amount of change in the discharge voltage value due to CID operation or parallel connection line opening from the actual driving discharge data monitored by the monitoring unit 300 As a configuration for first detecting a cell connection failure state due to a CID operation or a parallel connection line open of a corresponding battery by detecting whether or not, the following detailed configuration may be included.
- the match comparison unit may compare whether there is a section coincident with the final connection failure detection reference data stored in the memory unit 400 among the actual driving discharge data of the battery monitored by the monitoring unit 300.
- the section is referred to as a region in which the amount of change in the discharge voltage value is reduced due to the CID operation on the battery or the opening of a specific parallel line.
- connection failure primary determination unit 520 determines that a cell connection failure has occurred due to a CID operation or a specific parallel connection line open in the battery, a cell connection failure primary detection signal indicating this is generated and output. I can.
- the cell connection failure primary detection signal includes data on the amount of change in the discharge voltage value corresponding to a section in which it is determined that a cell connection failure has occurred due to a CID operation or a parallel connection line open.
- the cell connection failure primary detection signal is a bank identification number or a corresponding battery identification number that can identify a battery bank to which a battery (cell) in which a cell connection failure has occurred due to a CID operation or a parallel connection line is opened.
- the battery bank is a bundle of cells composed of a plurality of batteries, and when a bank identification number is included in the cell connection failure primary detection signal, a connection failure condition occurs due to CID operation or parallel connection line open.
- the battery bank including the battery (cell) can be detected, and when the battery's own identification number is included, the battery itself in which the CID operation or the parallel connection line is opened can be detected.
- the cell connection failure final detection unit is a configuration configured to reconfirm and finally detect a result of the first detection due to a cell connection failure due to a CID operation or a parallel connection line open in the cell connection failure primary detection unit 500, It may be configured to include the following detailed configuration.
- the charging current flows to the battery through the connection of an external charger or the power generation circuit (not shown) of the vehicle, and the battery or the battery belongs in the initial state in which the charging current flows in the battery, which is detected as a cell connection failure state.
- Direct Current Internal Resistance (DCIR) of the battery bank can be measured.
- the DCIR Direct Current Internal Resistance
- the DCIR is a battery internal resistance value, which can be measured only in the initial state of passing a charging current through the battery, so the battery is connected to an external charger or a power generation circuit (not shown) of the vehicle. It can be configured to measure the DCIR value in the initial state that formed the charging current in.
- the DCIR value measured in this way is used for final determination by reconfirming whether the first detected result is correct as the cell connection failure state.
- the DCIR comparison unit may compare whether a DCIR value of a battery or a battery bank, which is initially detected as a cell connection failure state measured by the DCIR measurement unit 610, falls outside a predetermined DCIR reference range.
- the cell connection failure primary detection signal includes a bank identification number of a battery bank to which a battery (cell) in which a connection failure condition has occurred due to a CID operation or parallel connection line open is included
- the cell connection failure is used. It is possible to identify a battery bank detected first as a state, and to identify a DCIR value measured for the battery bank, and compare whether the DCIR value is out of a predetermined DCIR reference range.
- the cell connection failure primary detection signal when the cell connection failure primary detection signal includes a battery self-identification number in which a connection failure condition occurs due to CID operation or parallel connection line open, the first detection as a cell connection failure condition is used. It is also possible to identify the battery that has been used, identify the DCIR value measured for that battery, and compare whether the DCIR value is outside a predetermined DCIR reference range.
- the cell connection failure final detection signal may include a battery identification number of a corresponding actual battery or a bank identification number of a battery bank to which the actual battery belongs.
- the reference data previously stored in the memory unit 400 reflects data in the case of a cell connection failure state in an actual situation, so that the reference data can be more precisely secured.
- the notification unit when the cell connection failure final detection signal is output from the connection failure final determination unit 630, generates and outputs an abnormal signal including a battery identification number of a corresponding battery or a bank identification number of a battery bank to which the battery belongs. , Allows the user to recognize that a cell connection failure condition has occurred due to CID operation or opening of a specific parallel line in the battery.
- the voltage measurement unit 200, the monitoring unit 300, the memory unit 400, the cell connection failure primary detection unit 500, and the cell connection failure final detection unit 600 the above-described cell connection failure of the present invention.
- a control device or control unit implementing the detection process it may be integrated into one integrated microprocessor or an engine control electronic control unit (ECU) of a vehicle, and may be configured to be integrated into a battery management device of a vehicle battery pack.
- ECU engine control electronic control unit
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Abstract
Description
Claims (12)
- 방전 중인 배터리에 CID(current interruption device) 동작 또는 병렬 연결선 오픈(Open) 상황을 발생시켜 셀 연결 고장이 발생하는 경우의 기준 데이터를 획득하는 기준 데이터 획득단계;외부 디바이스의 동작에 의해 방전 중인 배터리에 대하여 발생하는 실측 드라이빙 방전 데이터를 모니터링하는 모니터링단계;상기 모니터링단계에서 모니터링하는 실측 드라이빙 방전 데이터로부터, 상기 기준 데이터에서의 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 방전 전압 값의 변화량과 일치하는 구간이 존재하는지를 비교하여, 그 비교 결과에 따라 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인지를 1차적으로 검출하는 셀 연결 고장 1차 검출단계;상기 셀 연결 고장 1차 검출단계에서 셀 연결 고장이 발생한 상태인 것으로 1차 검출한 결과가 적합한지의 여부를 최종 확인하는 셀 연결 고장 최종 검출단계;를 포함하여 구성되는 병렬 연결 셀의 연결 고장 검출 방법.
- 제1항에 있어서,상기 셀 연결 고장 최종 검출단계에서 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인 것으로 최종 확인되면, 이를 나타내는 이상신호를 생성하고 알리는 이상 알림단계;를 더 포함하여 구성되는 병렬 연결 셀의 연결 고장 검출 방법.
- 제1항에 있어서,상기 기준 데이터 획득단계는,외부 디바이스에 연결된 소정의 기준 배터리에 대하여, 상기 외부 디바이스의 동작을 통해 방전시키면서, 소정의 주기 간격으로 방전 전압 값을 측정하여, 상기 측정된 방전 전압 값을 바탕으로 드라이빙 방전 기준 데이터를 획득하는 드라이빙 방전 기준 데이터 획득단계;상기 드라이빙 방전 기준 데이터 획득단계 진행 중, 소정의 시점에서 CID 동작 또는 병렬 연결선을 오픈(Open)하여, 그에 따라 발생하는 연결 고장 시점 기준 데이터를 획득하는 연결 고장 시점 기준 데이터 획득단계;상기 획득한 드라이빙 방전 기준 데이터 및 연결 고장 시점 기준 데이터를 동일한 시간 구간에 대하여 합산하여, CID 동작 또는 병렬 연결선 오픈(Open) 영역에서의 방전 전압 값의 변화량에 대한 데이터를 1차적으로 획득하는 1차 연결 고장 검출 기준 데이터 획득단계;상기 드라이빙 방전 기준 데이터 획득단계, 연결 고장 시점 기준 데이터 획득단계 및 1차 연결 고장 검출 기준 데이터 획득단계를 소정 횟수 이상 반복하고, 이를 통해 획득되는 다수의 1차 연결 고장 검출 기준 데이터에 대하여 머신 러닝 기법을 적용하여, CID 동작 또는 병렬 연결선 오픈(Open) 영역에서의 방전 전압 값의 변화량에 대한 데이터를 최종적으로 획득하는 최종 연결 고장 검출 기준 데이터 획득단계;를 포함하여 구성되는 것을 특징으로 하는 병렬 연결 셀의 연결 고장 검출 방법.
- 제3항에 있어서,셀 연결 고장 1차 검출단계는,상기 모니터링단계에서 모니터링하는 실측 드라이빙 방전 데이터에서, 상기 최종 연결 고장 검출 기준 데이터 획득단계에서 획득한 최종 연결 고장 검출 기준 데이터와 일치하는 구간이 존재하는지를 비교하는 일치 여부 비교단계;비교 결과, 상기 실측 드라이빙 방전 데이터로부터 상기 최종 연결 고장 검출 기준 데이터와 일치하는 구간이 존재하는 경우, 해당 구간을 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 방전 전압 값의 변화량이 발생한 구간으로 판단하여, 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 것으로 1차 판단하는 것을 특징으로 하는 연결 고장 1차 판단단계;를 포함하여 구성되는 것을 특징으로 하는 병렬 연결 셀의 연결 고장 검출 방법.
- 제4항에 있어서,상기 셀 연결 고장 최종 검출단계는,상기 셀 연결 고장 1차 검출단계에서 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장 상태인 것으로 1차 검출된 배터리에 충전 전류를 형성하는 충전 전류 형성단계;상기 충전 전류 형성단계에 의해 상기 배터리에 충전 전류가 흐르는 상태에서, 상기 배터리의 DCIR(Direct Current Internal Resistance)을 측정하는 DCIR 측정단계;상기 DCIR 측정단계에서 측정된 배터리의 DCIR 값이 소정의 DCIR 기준 범위를 벗어나는지를 비교하는 DCIR 비교단계;비교 결과, 상기 배터리의 DCIR 값이 소정의 DCIR 기준 범위를 벗어나는 경우, 해당 배터리에 CID(current interruption device) 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인 것으로 최종적으로 판단하는 연결 고장 최종 판단단계;를 포함하여 구성되는 병렬 연결 셀의 연결 고장 검출 방법.
- 제3항에 있어서,상기 드라이빙 방전 기준 데이터는, 상기 기준 배터리에 대한 방전 전압 값의 변화량이고,상기 연결 고장 시점 기준 데이터는, 상기 기준 배터리에 대하여 CID 동작 또는 병렬 연결선 오픈(Open)에 의해 발생하는 방전 전압 값의 변화량인 것을 특징으로 하는 병렬 연결 셀의 연결 고장 검출 방법.
- 병렬 연결된 적어도 하나 이상의 셀을 포함하는 하나 이상의 배터리;소정의 주기 간격으로, 배터리의 방전 전압을 측정하는 전압 측정부;상기 전압 측정부에 의해 측정되는 방전 전압 값을 바탕으로 하여, 파형 형태의 아날로그 신호로 도출되는 실측 드라이빙 방전 데이터를 모니터링하는 모니터링부;배터리에 CID(current interruption device) 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인지를 검출할 수 있도록 하는 기준 데이터가 저장되는 메모리부;상기 메모리부에 저장된 기준 데이터를 이용하여, 상기 모니터링부에서 모니터링하는 실측 드라이빙 방전 데이터에, 상기 기준 데이터의 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 방전 전압 값의 변화량과 일치하는 구간이 존재하는지를 감지하여, 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인지를 1차적으로 검출하는 셀 연결 고장 1차 검출부;상기 셀 연결 고장 1차 검출부에서 셀 연결 고장 상태인 것으로 1차 검출한 결과가 적합한지의 여부를 확인하여, 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인지를 최종적으로 검출하는 셀 연결 고장 최종 검출부;를 포함하여 구성되는 병렬 연결 셀의 연결 고장 검출 시스템.
- 제7항에 있어서,상기 메모리부에 저장되는 기준 데이터는, 최종 연결 고장 검출 기준 데이터를 포함하여 구성되며,상기 최종 연결 고장 검출 기준 데이터는, CID 동작 또는 병렬 연결선 오픈(Open) 시 발생하는 배터리의 방전 전압 값의 변화량인 것을 특징으로 하는 병렬 연결 셀의 연결 고장 시스템.
- 제8항에 있어서,상기 셀 연결 고장 1차 검출부는,상기 모니터링부에서 모니터링하고 있는 배터리의 실측 드라이빙 방전 데이터 중 상기 최종 연결 고장 검출 기준 데이터와 일치하는 구간이 존재하는지를 비교하는 일치 여부 비교부;비교 결과, 상기 실측 드라이빙 방전 데이터에서 상기 최종 연결 고장 검출 기준 데이터와 일치하는 구간이 존재하는 경우, 이를 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 방전 전압 값의 변화량이 발생한 구간으로 감지하여, 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인 것으로 1차 판단하는 연결 고장 1차 판단부;상기 연결 고장 1차 판단부에서 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인 것으로 1차 판단하면, 이를 나타내는 셀 연결 고장 1차 검출신호를 생성하여 출력하는 셀 연결 고장 1차 검출신호 생성부;를 포함하여 구성되는 것을 특징으로 하는 병렬 연결 셀의 연결 고장 검출 시스템.
- 제9항에 있어서,상기 셀 연결 고장 최종 검출부는,상기 셀 연결 고장 1차 검출신호에 해당하는 배터리에 충전 전류를 흘려준 상태에서, 해당 배터리의 DCIR(Direct Current Internal Resistance)를 측정하는 DCIR 측정부;상기 DCIR 측정부에서 측정된 DCIR 값이, 소정의 DCIR 기준 범위를 벗어나는지를 비교하는 DCIR 비교부;상기 DCIR 비교부의 비교 결과, 상기 셀 연결 고장 1차 검출신호에 해당하는 배터리의 DCIR 값이 소정의 DCIR 기준 범위를 벗어나는 경우, 해당 배터리에 CID 동작 또는 병렬 연결선 오픈(Open)에 의한 셀 연결 고장이 발생한 상태인 것으로 최종적으로 판단하며, 이를 나타내는 셀 연결 고장 최종 검출신호를 생성하여 출력하는 연결 고장 최종 판단부;를 포함하여 구성되는 것을 특징으로 하는 병렬 연결 셀의 연결 고장 검출 시스템.
- 제10항에 있어서,상기 셀 연결 고장 최종 판단부로부터 셀 연결 고장 최종 검출신호가 출력되면, 이상신호를 생성하여 출력하는 알림부;를 더 포함하여 구성되는 병렬 연결 셀의 연결 고장 검출 시스템.
- 제7항 또는 제9항에 있어서,상기 실측 드라이빙 방전 데이터는, 방전 전압 값의 변화량인 것을 특징으로 하는 병렬 연결 셀의 연결 고장 검출 시스템.
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| JP2021555837A JP7179199B2 (ja) | 2019-10-02 | 2020-09-24 | 並列接続セルの接続故障検出方法及びシステム |
| CN202080020063.7A CN113646648B (zh) | 2019-10-02 | 2020-09-24 | 检测并联电池单元的连接故障的方法和系统 |
| EP20870549.1A EP3951411B1 (en) | 2019-10-02 | 2020-09-24 | Method and system for detecting connection fault of parallel connection cell |
| ES20870549T ES2989395T3 (es) | 2019-10-02 | 2020-09-24 | Método y sistema para detectar una falla de conexión de celda de conexión paralela |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011135657A (ja) * | 2009-12-22 | 2011-07-07 | Sanyo Electric Co Ltd | バッテリシステム及びこれを備える車両並びにバッテリシステムの電流制限状態検出方法 |
| JP2014006189A (ja) * | 2012-06-26 | 2014-01-16 | Imv Corp | リチウムイオン二次電池の劣化診断装置 |
| KR20160092711A (ko) * | 2015-01-28 | 2016-08-05 | 주식회사 엘지화학 | 배터리 유닛의 전류차단장치의 개방 감지 장치 및 방법 |
| KR20160108963A (ko) * | 2015-03-09 | 2016-09-21 | 연세대학교 산학협력단 | 고조파 및 임피던스를 이용한 배터리 상태 진단 장치 및 방법, 그리고 이를 실행하기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체 |
| KR20170064608A (ko) | 2015-12-01 | 2017-06-12 | 재단법인 포항산업과학연구원 | 판파 발생 장치 |
| KR101835373B1 (ko) * | 2016-08-30 | 2018-03-08 | 조선대학교산학협력단 | 배터리팩 불균형 측정 장치 및 그 방법 |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100823188B1 (ko) | 2006-01-19 | 2008-04-18 | 삼성에스디아이 주식회사 | 배터리 관리 시스템 및 그의 고장셀 검출 방법 |
| KR100885243B1 (ko) | 2006-03-07 | 2009-02-24 | 송기학 | 예비 배터리유닛을 갖는 배터리장치 |
| JP4840154B2 (ja) | 2007-01-23 | 2011-12-21 | パナソニック株式会社 | 電源機器 |
| US7751994B2 (en) | 2007-09-29 | 2010-07-06 | Intel Corporation | Intelligent battery safety management system configured to compare collected operational data with reference operational data |
| JP2012021867A (ja) | 2010-07-14 | 2012-02-02 | Ricoh Co Ltd | 二次電池を複数個直列に接続した組電池の保護用半導体装置、該保護用半導体装置を内蔵した電池パックおよび電子機器 |
| JP2012060786A (ja) | 2010-09-09 | 2012-03-22 | Toyota Motor Corp | 車両の制御装置および制御方法 |
| US9190831B2 (en) | 2011-03-29 | 2015-11-17 | Toyota Jidosha Kabushiki Kaisha | Power supply system, vehicle incorporating the same and method for controlling power supply system |
| JPWO2012132246A1 (ja) * | 2011-03-31 | 2014-07-24 | パナソニック株式会社 | 電池電源装置、及び電池電源システム |
| US8168315B1 (en) * | 2011-08-23 | 2012-05-01 | Tesla Motors, Inc. | Method for detecting battery thermal events via battery pack isolation monitoring |
| JP5692040B2 (ja) | 2011-12-16 | 2015-04-01 | トヨタ自動車株式会社 | 蓄電システム |
| CN103688438B (zh) | 2012-02-01 | 2016-03-02 | 丰田自动车株式会社 | 蓄电系统以及用于判别蓄电块的状态的方法 |
| CN104221248A (zh) * | 2012-03-16 | 2014-12-17 | 波士顿电力公司 | 以可变旁通电流平衡电池单元的方法和系统 |
| JP5949146B2 (ja) | 2012-05-22 | 2016-07-06 | 株式会社豊田自動織機 | 電池状態判定方法、電池制御装置、及び電池パック |
| JP2015102396A (ja) | 2013-11-22 | 2015-06-04 | 株式会社東芝 | 蓄電池劣化検出システムおよびその方法、ならびにプログラム |
| JP2015109148A (ja) | 2013-12-03 | 2015-06-11 | 三菱重工業株式会社 | 接触不良検知装置、電池管理システム、接触不良検知方法、及びプログラム |
| KR102005399B1 (ko) | 2015-11-02 | 2019-10-01 | 주식회사 엘지화학 | 배터리 연결 상태 판단 장치 및 방법 |
| JP2018026888A (ja) | 2016-08-08 | 2018-02-15 | 株式会社デンソーテン | 異常検出装置および組電池システム |
| JP6864503B2 (ja) | 2017-03-03 | 2021-04-28 | 株式会社エンビジョンAescジャパン | 二次電池の制御方法及び装置 |
| TWI627808B (zh) | 2017-04-28 | 2018-06-21 | 廣達電腦股份有限公司 | 電池裝置及電池保護方法 |
| JP6865649B2 (ja) | 2017-07-19 | 2021-04-28 | 株式会社デンソーテン | 制御装置、電池監視システム、および電池監視方法 |
| CN107640033A (zh) | 2017-08-29 | 2018-01-30 | 深圳市沃特玛电池有限公司 | 一种防止电池管理系统故障误判的方法及系统 |
| JP7163313B2 (ja) * | 2017-12-22 | 2022-10-31 | 三洋電機株式会社 | 管理装置、及び電源システム |
| CN108646183B (zh) * | 2018-03-30 | 2021-01-29 | 合肥国轩高科动力能源有限公司 | 一种电池组中电池故障诊断方法 |
| CN108848183B (zh) | 2018-06-29 | 2021-08-24 | 北京奇虎科技有限公司 | 模拟用户的登录方法及装置 |
| CN110165740B (zh) | 2019-06-03 | 2020-08-25 | 重庆斯微奇电子技术有限公司 | 一种电池保护电路以及供电装置 |
-
2019
- 2019-10-02 KR KR1020190122268A patent/KR102733356B1/ko active Active
-
2020
- 2020-09-24 HU HUE20870549A patent/HUE068693T2/hu unknown
- 2020-09-24 JP JP2021555837A patent/JP7179199B2/ja active Active
- 2020-09-24 WO PCT/KR2020/013013 patent/WO2021066393A1/ko not_active Ceased
- 2020-09-24 ES ES20870549T patent/ES2989395T3/es active Active
- 2020-09-24 CN CN202080020063.7A patent/CN113646648B/zh active Active
- 2020-09-24 PL PL20870549.1T patent/PL3951411T3/pl unknown
- 2020-09-24 US US17/630,807 patent/US11959971B2/en active Active
- 2020-09-24 EP EP20870549.1A patent/EP3951411B1/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011135657A (ja) * | 2009-12-22 | 2011-07-07 | Sanyo Electric Co Ltd | バッテリシステム及びこれを備える車両並びにバッテリシステムの電流制限状態検出方法 |
| JP2014006189A (ja) * | 2012-06-26 | 2014-01-16 | Imv Corp | リチウムイオン二次電池の劣化診断装置 |
| KR20160092711A (ko) * | 2015-01-28 | 2016-08-05 | 주식회사 엘지화학 | 배터리 유닛의 전류차단장치의 개방 감지 장치 및 방법 |
| KR20160108963A (ko) * | 2015-03-09 | 2016-09-21 | 연세대학교 산학협력단 | 고조파 및 임피던스를 이용한 배터리 상태 진단 장치 및 방법, 그리고 이를 실행하기 위한 프로그램을 기록한 컴퓨터로 읽을 수 있는 기록매체 |
| KR20170064608A (ko) | 2015-12-01 | 2017-06-12 | 재단법인 포항산업과학연구원 | 판파 발생 장치 |
| KR101835373B1 (ko) * | 2016-08-30 | 2018-03-08 | 조선대학교산학협력단 | 배터리팩 불균형 측정 장치 및 그 방법 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP3951411A4 |
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| ES2989395T3 (es) | 2024-11-26 |
| EP3951411B1 (en) | 2024-08-21 |
| KR102733356B1 (ko) | 2024-11-22 |
| CN113646648B (zh) | 2024-04-02 |
| US11959971B2 (en) | 2024-04-16 |
| EP3951411A1 (en) | 2022-02-09 |
| EP3951411A4 (en) | 2022-06-08 |
| KR20210039705A (ko) | 2021-04-12 |
| PL3951411T3 (pl) | 2024-11-25 |
| JP2022525896A (ja) | 2022-05-20 |
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| CN113646648A (zh) | 2021-11-12 |
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