WO2023136455A1 - 배터리 상태 추정 방법 및 그 방법을 제공하는 배터리 시스템 - Google Patents
배터리 상태 추정 방법 및 그 방법을 제공하는 배터리 시스템 Download PDFInfo
- Publication number
- WO2023136455A1 WO2023136455A1 PCT/KR2022/018435 KR2022018435W WO2023136455A1 WO 2023136455 A1 WO2023136455 A1 WO 2023136455A1 KR 2022018435 W KR2022018435 W KR 2022018435W WO 2023136455 A1 WO2023136455 A1 WO 2023136455A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- state
- identification information
- charge
- estimation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- 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
-
- 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
- G01R19/003—Measuring mean values of current or voltage during a given time interval
-
- 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
- G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)
-
- 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
- G01R31/3842—Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
-
- 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
-
- 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
-
- 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
-
- 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 for estimating a state of a battery, such as SOC (State of Charge), SOH (State of Health), SOP (State of Power), etc. (hereinafter, SOX), and a battery system that provides the method. it's about
- Batteries mounted in high-output products such as electric vehicles or hybrid vehicles include a plurality of cells connected in series or parallel to supply a high voltage to a load. Since the performance of a battery in an eco-friendly vehicle is directly related to the performance of the vehicle, the role of a battery management system (BMS) that efficiently manages the state of the battery is important.
- BMS battery management system
- the BMS is a battery current flowing through the battery, a plurality of cell voltages of a plurality of battery cells, and battery temperature (hereinafter, battery data) based on the state of charge (SOC, state of charge), health state ( SOH, State of Health), output state (SOP, State of Power), etc. are estimated, and the state of the battery is diagnosed based on the estimated result. If an error occurs as a result of diagnosing the state of the battery, the BMS transmits the diagnosis result to the upper system (eg, car, bike, ESS, etc.) in which the battery system is mounted to ensure overall safety and safety of the upper system. Allow performance to be managed.
- the upper system eg, car, bike, ESS, etc.
- the BMS includes a SOC estimation model, a SOH estimation model, and a SOP estimation model, and each estimation model determines the state of charge (SOC), state of health (SOH), and state of output (SOP) of the battery based on battery data. guess
- the present invention provides a battery state estimation method for estimating a battery state (SOC, SOH, SOP, etc.) by reflecting weights optimized for an upper system equipped with a battery system in a plurality of estimation models, and a battery system providing the method. is to provide
- a battery system includes a battery including a plurality of battery cells, a communication unit configured to communicate with a system in which the battery system is mounted and receiving identification information of the system, a plurality of cell voltages of the plurality of battery cells, A monitoring unit for collecting battery information of at least one of current and temperature of the battery, a plurality of batteries for estimating the state of charge (SOC) of each of the plurality of battery cells based on the battery information according to a predetermined algorithm.
- SOC state of charge
- An SOC estimation model a storage unit for storing a first weight corresponding to the identification information, and applying the first weight to a plurality of states of charge estimated by the plurality of SOC estimation models for each of the plurality of battery cells and a control unit that calculates an average value of the first state of charge by summing the results.
- the control unit calculates an average value of a second state of charge by summing a result of applying a second weight corresponding to the identification information and a predetermined estimation condition to the plurality of states of charge for each of the plurality of battery cells.
- the estimation condition may be determined according to a result of comparing each of the collected cell voltages with a predetermined reference value.
- the storage unit may include a plurality of identification information for each of a plurality of systems mountable to the battery system, a plurality of first weights corresponding to each of the plurality of identification information, and a plurality of values corresponding to each of the plurality of identification information and the estimation condition.
- the second weight of may be stored.
- a battery system including a plurality of battery cells, a communication unit for communicating with a system in which the battery system is mounted and receiving identification information of the system, a plurality of cell voltages of the plurality of battery cells, A monitoring unit that collects battery information of at least one of current and temperature of the battery, and a plurality of cells that estimate the state of health (SOH) of each of the plurality of battery cells based on the battery information according to a predetermined algorithm.
- a storage unit for storing an SOH estimation model of , a first weight corresponding to the identification information, and a plurality of health states estimated by the plurality of SOH estimation models for each of the plurality of battery cells. and a controller that calculates an average value of the first health state by summing up the applied results.
- the control unit calculates an average value of the second health state by adding a result of applying a second weight corresponding to the identification information and a predetermined estimation condition to the plurality of health states for each of the plurality of battery cells.
- the estimation condition may be determined according to a result of comparing each of the collected cell voltages with a predetermined reference value.
- the storage unit may include a plurality of identification information for each of a plurality of systems mountable to the battery system, a plurality of first weights corresponding to each of the plurality of identification information, and a plurality of values corresponding to each of the plurality of identification information and the estimation condition.
- the second weight of may be stored.
- a method for estimating a battery state includes determining a first weight corresponding to identification information of a system in which a battery system is mounted, and determining a plurality of weights included in a battery based on battery information according to a predetermined algorithm.
- the determining of the weight may include determining a second weight corresponding to identification information of the system and a predetermined estimation condition, and the calculating may include the plurality of states of charge for each of the plurality of battery cells. An average value of the second state of charge may be calculated by summing the result of applying the second weight to .
- the estimation condition may be determined according to a result of comparing each of the plurality of cell voltages with a predetermined reference value.
- reliability of an estimated result can be increased by estimating a battery state by reflecting weights optimized for an environment in which a battery is used, that is, a higher-level system in which a battery system is installed, in a plurality of estimation models.
- the reliability of the estimated result can be remarkably increased. .
- FIG. 1 is a conceptual diagram illustrating an upper system in which a battery system according to an exemplary embodiment is mounted.
- FIG. 2 is a block diagram illustrating the battery system of FIG. 1 in detail.
- FIG. 3 is a block diagram illustrating in detail the functions of the controller (MCU) of FIG. 2 .
- FIG. 4 is a flowchart illustrating a method for estimating a battery state according to another embodiment.
- FIG. 1 is a conceptual diagram illustrating an upper system in which a battery system according to an embodiment is mounted
- FIG. 2 is a block diagram illustrating the battery system of FIG. 1 in detail
- FIG. 3 is a function of a control unit (MCU) of FIG. 2 It is a block diagram explaining in detail.
- MCU control unit
- the upper system 1 is a system in which the battery system 2 is mounted.
- the upper system 1 may include all systems requiring batteries.
- the upper system 1 may include a car, a bike, an energy storage system (ESS), and the like.
- ESS energy storage system
- the battery system 2 includes a customized State of X (SOX) estimation algorithm in the upper system 1.
- SOX State of X
- the battery system 2 identifies the upper system 1 in which the current battery system 2 is mounted, and according to the corresponding state of X (SOX) estimation algorithm, the battery state (SOX, State) of X) is estimated.
- the battery system 2 charges a battery in which the characteristics of the individual upper system 1 are well reflected.
- the state (SOC, State of Charge), health state (SOH, State of Health), output state (SOP, State of Power), etc. can be estimated. That is, the battery system 2 according to an embodiment may estimate the battery state (SOX, State of X) with high precision.
- the battery system 2 includes a battery 10, a relay 20, a current sensor 30, and a battery management system (BMS) 40.
- BMS battery management system
- the battery 10 may include a plurality of battery cells (Cell1-Celln) electrically connected in series and parallel.
- the battery cell may be a rechargeable secondary battery.
- a predetermined number of battery cells are connected in series to form a battery module, a predetermined number of battery modules are connected in series to form a battery pack, and a predetermined number of battery packs are connected in parallel to form a battery bank ( battery bank) to supply desired power.
- 1 shows a battery 10 in which a plurality of battery cells (Cell1-Celln) are connected in series, but is not limited thereto, and the battery 10 may be configured in units of battery modules, battery packs, or battery banks. .
- Each of the plurality of battery cells (Cell1-Celln) is electrically connected to the BMS 40 through wires.
- the BMS 40 collects and analyzes various information about battery cells including information about a plurality of battery cells (Cell1-Celln) to control charging and discharging of the battery cells, protection operation, etc., and operation of the relay 20. can control.
- the battery 10 includes a plurality of battery cells (Cell1-Celln) connected in series, and is connected between two output terminals OUT1 and OUT2 of the battery system 2, and the battery system 2
- a relay 20 is connected between the positive electrode and the first output terminal OUT1
- a current sensor 30 is connected between the negative electrode of the battery system 2 and the second output terminal OUT2.
- the relay 20 controls electrical connection between the battery system 2 and an external device.
- the relay 20 When the relay 20 is turned on, the battery system 2 and the external device are electrically connected to charge or discharge, and when the relay 20 is turned off, the battery system 2 and the external device are electrically separated.
- the external device may be a charger in a charging cycle in which power is supplied to the battery 10 to charge it, and a load in a discharging cycle in which the battery 10 discharges power to the external device.
- the current sensor 30 is connected in series to a current path between the battery 10 and an external device.
- the current sensor 30 may measure the battery current flowing through the battery 10 and transmit the measurement result to the BMS 40 .
- the battery current may correspond to the cell current.
- the battery current may be a charging current or a discharging current.
- the battery system 2 may further include a temperature sensor (not shown) for measuring the temperature of the battery 10 .
- the temperature sensor may measure the temperature of the battery 10 and transmit the measurement result to the BMS 40 .
- the temperature of each of the plurality of battery cells (Cell1-Celln) may be estimated based on the temperature of the battery 10 .
- the BMS 40 includes a monitoring unit 41, a storage unit 43, a communication unit 45, and a control unit 47.
- the monitoring unit 41 is electrically connected to an anode and a cathode of each of the plurality of battery cells Cell1 to Celln, and measures a cell voltage of each of the plurality of battery cells Cell1 to Celln.
- the battery current value measured by the current sensor 30 and the battery temperature value measured by the temperature sensor may be transmitted to the monitoring unit 41 .
- the monitoring unit 41 transfers information about the measured cell voltage, battery current, and battery temperature to the controller 47 .
- the monitoring unit 41 measures the cell voltage of each of the plurality of battery cells (Cell1-Celln) every predetermined cycle during a rest period in which charging and discharging does not occur, and based on the measured cell voltage The cell current can be calculated.
- the monitoring unit 41 may transmit the cell voltage and cell current of each of the plurality of battery cells Cell1 to Celln to the control unit 47 .
- the storage unit 43 stores system identification information (APP ID), weights, a plurality of estimation models for estimating a battery state (SOX, State of X), and battery information.
- the battery state (SOX, State of X) includes the battery cell's state of charge (SOC, State of Charge), the battery cell's state of health (SOH, State of Health), the battery cell's output state (SOP, State of Power), etc. can include
- the battery information may include battery-related information such as cell voltage, battery current, and battery temperature.
- the storage unit 43 may store a plurality of SOC estimation models for estimating SOC of each of a plurality of battery cells included in the battery 10 based on battery information according to a predetermined algorithm.
- a first SOC estimation model and a second SOC estimation model that is, two SOC estimation models are shown, but are not limited thereto, and the BMS 40 may include three or more SOC estimation models.
- the storage unit 43 is a first SOC estimation model for estimating the state of charge (SOC) according to the conventionally well-known Coulomb Counting Method, OCV (Open Circuit Voltage Method) )-SOC relationship, a second SOC estimation model for estimating the state of charge (SOC), a third SOC estimation model for estimating the state of charge (SOC) based on the terminal voltage, and the like may be stored.
- SOC state of charge
- OCV Open Circuit Voltage Method
- the storage unit 43 may store a plurality of SOH estimation models for estimating the state of health (SOH) of each of a plurality of battery cells included in the battery 10 based on battery information according to a predetermined algorithm.
- 3 shows a first SOH estimation model and a second SOH estimation model, that is, two SOH estimation models, but is not limited thereto, and the BMS 40 may include three or more SOH estimation models.
- the storage unit 43 is a first SOH estimation model for estimating the state of health (SOH) based on the well-known OCV-SOH relationship, and the health based on the SOC-SOH relationship.
- a second SOH estimation model for estimating the state of health (SOH) may be stored.
- SOH state of health
- SOH state of health
- DCIR Direct Current Internal Resistance
- the storage unit 43 may store a plurality of SOP estimation models for estimating the output state (SOP) of each of a plurality of battery cells included in the battery 10 based on battery information according to a predetermined algorithm.
- 3 shows a first SOP estimation model and a second SOP estimation model, that is, two SOP estimation models, but is not limited thereto, and the BMS 40 may include three or more SOP estimation models.
- the storage unit 43 stores a first SOP estimation model, current data, and voltage data for estimating an output state (SOP) based on DCIR (DCIR), which is widely known in the art.
- a third SOP estimation model for estimating the output state SOP may be stored.
- the system identification information may be identification information for distinguishing a system in which the battery system 2 is mounted.
- the weight may be a value previously set in the upper system 1 and stored in the storage unit 43 in order to estimate a customized battery state SOX.
- the weight may include a plurality of first weights corresponding to the system identification information (APP ID).
- the weight may include system identification information (APP ID) and a plurality of second weights corresponding to a predetermined estimation condition. A more detailed description will be given with the control unit 47 below.
- the estimation condition may be a condition reflecting the current state of the battery cell.
- the estimation condition may be determined according to a result of comparing a cell voltage of a battery cell with a predetermined reference value.
- the estimation condition may include a condition determined by a cell voltage of a battery cell, a battery current, or a battery temperature.
- the estimation condition is not limited to cell voltage, battery current, and battery temperature, and may include various conditions reflecting the current state of the battery 10 or battery cell.
- the communication unit 45 communicates with the upper system 1 and receives identification information of the upper system 1 (hereinafter referred to as system identification information).
- system identification information For example, the control unit 47 may store the system identification information (APP ID) received by the communication unit 45 in the storage unit 43 .
- the control unit 47 determines a weight corresponding to at least one of the system identification information (APP ID) received through the communication unit 45 and a predetermined estimation condition, and estimates the battery state SOX based on the determined weight. .
- APP ID system identification information
- the controller 47 includes a first module 471 for estimating the state (SOX) of the battery 10 and a first module 471 for diagnosing the battery 10 according to a predetermined criterion based on the estimated value. It may include 2 modules (473).
- the first module 471 determines a weight corresponding to at least one of system identification information (APP ID) and a predetermined estimation condition.
- the first module 471 applies the determined weight to a plurality of estimation results estimated by a plurality of SOX estimation models, and calculates an average value by summing the plurality of estimation results to which the weights are applied.
- APP ID system identification information
- Table 1 below is an example of a plurality of first weights corresponding to predetermined system identification information (APP ID).
- the first weight may be a weight considering only the system identification information (APP ID), and the corresponding value may be different for each estimation model as shown in Table 1 below.
- the first module 471 applies a first weight of 0.7 corresponding to the first SOC value A1 estimated by the first SOC estimation module and , by applying a first weight of 0.3 corresponding to the second SOC value A2 estimated by the second SOC estimation module , the average value of the state of charge (SOC) for the first battery cell ( ) can be calculated.
- the first module 471 may calculate the average value Aave of the state of charge (SOC) of the first battery cell as 51.2%. In the same way, the first module 471 may calculate the average value Aave of the state of charge (SOC) of each of the plurality of battery cells, such as the second battery cell and the third battery cell.
- Table 2 below is an example of a plurality of second weights corresponding to predetermined system identification information (APP ID) and estimation conditions.
- the second weight may be a weight considering both system identification information (APP ID) and estimation conditions, and the corresponding value may be different for each estimation model as shown in Table 2 below.
- the estimation condition is described as a condition determined according to a comparison result between the cell voltage and a predetermined reference value (eg, 3.7V), but as described above, the estimation condition is not limited to the cell voltage and the reference value. no.
- a predetermined reference value eg, 3.7V
- the first module 471 applies a second weight of 0.7 corresponding to the first SOC value A1 estimated by the first SOC estimation module and , by applying a second weight of 0.3 corresponding to the second SOC value A2 estimated by the second SOC estimation module , the average value of the state of charge (SOC) for the first battery cell ( ) can be calculated.
- the first module 471 may calculate the average value Aave of the state of charge (SOC) of the first battery cell as 51.2%. In the same way, the first module 471 may calculate the average value Aave of the state of charge (SOC) of each of the plurality of battery cells, such as the second battery cell and the third battery cell.
- the first module 471 applies a second weight of 0.5 corresponding to the first SOC value A1 estimated by the first SOC estimation module and , by applying a second weight of 0.5 corresponding to the second SOC value A2 estimated by the second SOC estimation module , the average value of the state of charge (SOC) for the first battery cell ( ) can be calculated.
- the first module 471 may calculate the average value Aave of the state of charge (SOC) of the first battery cell as 52%. In the same way, the first module 471 may calculate the average value Aave of the state of charge (SOC) of each of the plurality of battery cells, such as the second battery cell and the third battery cell.
- the first module 471 uses the plurality of SOH estimation models and the plurality of SOP estimation models shown in FIG. 3 in the same manner as described above, and the average value of the state of health (SOH) for each of the plurality of battery cells ( Bave) and the average value (Cave) of the output state (SOP) can be calculated.
- the second module 473 determines the average value of the battery state (SOX) calculated by the first module 471 as the battery state (SOX) value, and performs fault diagnosis for the battery 10 based on this value.
- the second module 473 may diagnose the battery 10 as a failure state when the average value (Bave) of the state of health (SOH) is smaller than a preset reference value.
- FIG. 4 is a flowchart illustrating a method for estimating a battery state according to another embodiment.
- the BMS 40 determines identification information (APP ID) of the upper system 1 in which the battery system 2 is mounted and weights corresponding to predetermined estimation conditions (S100).
- APP ID identification information
- S100 predetermined estimation conditions
- the BMS 40 may first determine a first weight or a second weight based on a battery state to be estimated (SOX), system identification information (APP ID), and whether estimation conditions are applied.
- SOX battery state to be estimated
- APP ID system identification information
- the BMS 40 when the battery state (SOX) is estimated by considering only the identification information (APP ID) of the upper system 1 in which the battery system 2 is mounted, the BMS 40 stores the storage unit 43 A first weight may be determined from the pre-stored Table 1.
- the BMS 40 determines the first SOC estimated by the first SOC estimating module.
- a first weight (0.7) to be applied to the value A1 and a first weight (0.3) corresponding to the second SOC value A2 estimated by the second SOC estimation module may be determined.
- the BMS 40 when estimating the battery state (SOX) in consideration of the identification information (APP ID) and estimation conditions of the upper system 1 in which the battery system 2 is mounted, the BMS 40 is a storage unit ( 43), the second weight may be determined from Table 2 previously stored.
- the first SOC estimation module estimates the first A second weight 0.5 to be applied to the SOC value A1 and a second weight 0.5 corresponding to the second SOC value A2 estimated by the second SOC estimation module may be determined.
- the BMS 40 provides information on the battery state SOX for each of a plurality of battery cells from each of a plurality of SOX estimation models for estimating the battery state SOX based on the battery information according to a predetermined algorithm.
- Collect (S200) Collect (S200).
- the BMS 40 provides information on a first SOC value A1 estimated by the first SOC estimation module and a second SOC value A2 estimated by the second SOC estimation module. can be collected.
- the BMS 40 may collect information on the first SOH value B1 estimated by the first SOH estimation module and the second SOH value B2 estimated by the second SOH estimation module.
- the BMS 40 may collect information on the first SOP value C1 estimated by the first SOP estimation module and the second SOP value C2 estimated by the second SOP estimation module. there is.
- the BMS 40 calculates an average value of the battery states SOX by summing the results of applying weights to each of the plurality of battery states SOX (S300).
- the BMS 40 applies a second weight of 0.5 corresponding to the first SOC value A1 estimated by the first SOC estimation module and , by applying a second weight of 0.5 corresponding to the second SOC value A2 estimated by the second SOC estimation module , the average value of the state of charge (SOC) for the first battery cell ( ) can be calculated.
- the BMS 40 calculates the average value Aave of the SOC of the first battery cell. can be calculated as 52%.
- the BMS 40 may diagnose a faulty state of the battery, determine whether to perform cell balancing, and the like, based on the average value of the estimated battery state (SOX).
- the battery 10 has a state of charge (SOC), state of health (SOH), and state of output (SOP) according to the environment in which it is used, that is, the upper system 1 and the current state of the battery (cell voltage, cell temperature, etc.)
- SOC state of charge
- SOH state of health
- SOP state of output
- the current state (SOX) of the battery 10 can be estimated with higher precision by applying a weight reflecting the situation as described above to the result estimated by the plurality of estimation models as well as using a plurality of estimation models. .
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims (11)
- 복수의 배터리 셀을 포함하는 배터리,배터리 시스템이 탑재되는 상위 시스템과 통신하여 상기 상위 시스템의 식별정보를 수신하는 통신부,상기 복수의 배터리 셀의 복수의 셀 전압, 상기 배터리의 전류 및 온도 중 적어도 하나의 배터리 정보를 수집하는 모니터링부,소정의 알고리즘에 따라 상기 배터리 정보에 기초하여 상기 복수의 배터리 셀 각각의 충전상태(SOC, State of Charge)를 추정하는 복수의 SOC 추정모델과, 상기 식별정보에 대응하는 제1 가중치를 저장하는 저장부, 그리고상기 복수의 배터리 셀 각각에 대하여, 상기 복수의 SOC 추정모델이 추정한 복수의 충전상태에 상기 제1 가중치를 적용한 결과를 합산하여 제1 충전상태의 평균값을 산출하는 제어부를 포함하는, 배터리 시스템.
- 제1항에 있어서,상기 제어부는,상기 복수의 배터리 셀 각각에 대하여, 상기 식별정보 및 기 설정된 소정의 추정조건에 대응하는 제2 가중치를 상기 복수의 충전상태에 적용한 결과를 합산하여 제2 충전상태의 평균값을 산출하는, 배터리 시스템.
- 제2항에 있어서,상기 추정조건은,상기 수집된 복수의 셀 전압 각각을 소정의 기준값을 비교한 결과에 따라 결정되는, 배터리 시스템.
- 제3항에 있어서,상기 저장부는,상기 배터리 시스템이 탑재 가능한 복수의 시스템 각각에 대한 복수의 식별정보, 상기 복수의 식별정보 각각에 대응하는 복수의 제1 가중치, 상기 복수의 식별정보 및 상기 추정조건 각각에 대응하는 복수의 제2 가중치가 저장되는, 배터리 시스템.
- 복수의 배터리 셀을 포함하는 배터리,배터리 시스템이 탑재되는 상위 시스템과 통신하여 상기 상위 시스템의 식별정보를 수신하는 통신부,상기 복수의 배터리 셀의 복수의 셀 전압, 상기 배터리의 전류, 및 온도 중 적어도 하나의 배터리 정보를 수집하는 모니터링부,소정의 알고리즘에 따라 상기 배터리 정보에 기초하여 상기 복수의 배터리 셀 각각의 건강상태(SOH, State of Health)를 추정하는 복수의 SOH 추정모델과, 상기 식별정보에 대응하는 제1 가중치를 저장하는 저장부, 그리고상기 복수의 배터리 셀 각각에 대하여, 상기 복수의 SOH 추정모델이 추정한 복수의 건강상태에 상기 제1 가중치를 적용한 결과를 합산하여 제1 건강상태의 평균값을 산출하는 제어부를 포함하는, 배터리 시스템.
- 제5항에 있어서,상기 제어부는,상기 복수의 배터리 셀 각각에 대하여, 상기 식별정보 및 기 설정된 소정의 추정조건에 대응하는 제2 가중치를 상기 복수의 건강상태에 적용한 결과를 합산하여 제2 건강상태의 평균값을 산출하는, 배터리 시스템.
- 제6항에 있어서,상기 추정조건은,상기 수집된 복수의 셀 전압 각각을 소정의 기준값과 비교한 결과에 따라 결정되는, 배터리 시스템.
- 제7항에 있어서,상기 저장부는,상기 배터리 시스템이 탑재 가능한 복수의 시스템 각각에 대한 복수의 식별정보, 상기 복수의 식별정보 각각에 대응하는 복수의 제1 가중치, 상기 복수의 식별정보 및 상기 추정조건 각각에 대응하는 복수의 제2 가중치가 저장되는, 배터리 시스템.
- 배터리 시스템이 탑재되는 상위 시스템의 식별정보에 대응하는 제1 가중치를 결정하는 단계,소정의 알고리즘에 따라 배터리 정보에 기초하여 배터리에 포함된 복수의 배터리 셀 각각의 충전상태(SOC, State of Charge)를 추정하는 복수의 SOC 추정모델로부터 복수의 충전상태를 수신하는 단계, 그리고상기 복수의 배터리 셀 각각에 대하여, 상기 복수의 충전상태에 상기 제1 가중치를 적용한 결과를 합산하여 제1 충전상태의 평균값을 산출하는 단계를 포함하고,상기 배터리 정보는,상기 복수의 배터리 셀의 복수의 셀 전압, 상기 배터리의 전류 및 온도 중 적어도 하나를 포함하는, 배터리 상태 추정 방법.
- 제9항에 있어서,상기 가중치를 결정하는 단계는,상기 시스템의 식별정보 및 기 설정된 소정의 추정조건에 대응하는 제2 가중치를 결정하고,상기 산출하는 단계는,상기 복수의 배터리 셀 각각에 대하여, 상기 복수의 충전상태에 상기 제2 가중치를 적용한 결과를 합산하여 제2 충전상태의 평균값을 산출하는, 배터리 상태 추정 방법.
- 제9항에 있어서,상기 추정조건은,상기 복수의 셀 전압 각각을 소정의 기준값과 비교한 결과에 따라 결정되는, 배터리 상태 추정 방법.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL22920784.0T PL4382933T3 (pl) | 2022-01-14 | 2022-11-21 | Sposób szacowania stanu baterii oraz akumulatora i system bateryjny akumulatorowy do realizacji tego sposobu |
| EP22920784.0A EP4382933B1 (en) | 2022-01-14 | 2022-11-21 | Battery state estimation method, and battery system for providing method |
| ES22920784T ES3065716T3 (en) | 2022-01-14 | 2022-11-21 | Battery state estimation method, and battery system for providing method |
| CN202280061417.1A CN117957453A (zh) | 2022-01-14 | 2022-11-21 | 电池状态估计方法和提供该方法的电池系统 |
| JP2024508069A JP7810491B2 (ja) | 2022-01-14 | 2022-11-21 | バッテリー状態推定方法およびその方法を提供するバッテリーシステム |
| US18/687,716 US20240385249A1 (en) | 2022-01-14 | 2022-11-21 | Battery state estimation method and battery system providing the same |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220005739A KR102931475B1 (ko) | 2022-01-14 | 2022-01-14 | 배터리 상태 추정 방법 및 그 방법을 제공하는 배터리 시스템 |
| KR10-2022-0005739 | 2022-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023136455A1 true WO2023136455A1 (ko) | 2023-07-20 |
Family
ID=87279295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/018435 Ceased WO2023136455A1 (ko) | 2022-01-14 | 2022-11-21 | 배터리 상태 추정 방법 및 그 방법을 제공하는 배터리 시스템 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20240385249A1 (ko) |
| EP (1) | EP4382933B1 (ko) |
| JP (1) | JP7810491B2 (ko) |
| KR (1) | KR102931475B1 (ko) |
| CN (1) | CN117957453A (ko) |
| ES (1) | ES3065716T3 (ko) |
| PL (1) | PL4382933T3 (ko) |
| WO (1) | WO2023136455A1 (ko) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4636418A1 (en) * | 2024-04-15 | 2025-10-22 | Samsung Sdi Co., Ltd. | Method and system for estimating battery state based on composite probability variable |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102881464B1 (ko) * | 2023-08-16 | 2025-11-06 | 주식회사 피엠그로우 | 배터리 팩 평가 점수를 결정하기 위한 방법 |
| JP2025095353A (ja) * | 2023-12-14 | 2025-06-26 | トヨタ自動車株式会社 | 制御装置、サーバ、制御システム、および、制御方法 |
| KR102881214B1 (ko) * | 2024-01-22 | 2025-11-05 | 주식회사 배러머신 | 다변형 입력벡터를 수용하는 배터리 상태 추정용 dnn 모델 생성 방법 |
| CN118311431A (zh) * | 2024-05-10 | 2024-07-09 | 无锡天青元储智能科技有限公司 | 一种电池状态预测方法、装置、设备及存储介质 |
| CN118275886B (zh) * | 2024-05-31 | 2024-08-27 | 中汽研(天津)汽车工程研究院有限公司 | 一种续驶里程优化潜力评价方法及装置、介质、设备 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110111018A (ko) * | 2010-04-02 | 2011-10-10 | 에스케이이노베이션 주식회사 | 배터리의 용량 열화 상태 측정 장치 및 방법 |
| KR101717001B1 (ko) * | 2014-07-25 | 2017-03-15 | 가부시끼가이샤 도시바 | 내부 상태 추정 시스템 및 그 추정 방법 |
| KR20180043048A (ko) * | 2016-10-19 | 2018-04-27 | 현대자동차주식회사 | 배터리 soh 추정 방법 |
| KR20180101823A (ko) * | 2017-03-06 | 2018-09-14 | 주식회사 엘지화학 | 배터리 셀 전압 데이터 처리 장치 및 방법 |
| KR20190019316A (ko) * | 2017-08-17 | 2019-02-27 | 삼성전자주식회사 | 배터리 상태 추정 방법 및 장치 |
| KR20220005739A (ko) | 2020-07-07 | 2022-01-14 | 삼성전기주식회사 | 터치 센싱 장치 및 이를 구비하는 전자 기기 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3009093B1 (fr) * | 2013-07-29 | 2017-01-13 | Renault Sa | Estimation de l'etat de vieillissement d'une batterie electrique |
| US9547045B2 (en) * | 2014-02-04 | 2017-01-17 | Gm Global Technology Operations, Llc | Methods and systems for determining a characteristic of a vehicle energy source |
| JP6446880B2 (ja) * | 2014-07-17 | 2019-01-09 | 三菱自動車工業株式会社 | バッテリ制御装置 |
| JP2019144211A (ja) * | 2018-02-23 | 2019-08-29 | 株式会社デンソーテン | 推定装置および推定方法 |
| JP7457575B2 (ja) * | 2020-05-25 | 2024-03-28 | 株式会社Aescジャパン | 劣化推定装置、モデル生成装置、劣化推定方法、モデル生成方法、及びプログラム |
-
2022
- 2022-01-14 KR KR1020220005739A patent/KR102931475B1/ko active Active
- 2022-11-21 PL PL22920784.0T patent/PL4382933T3/pl unknown
- 2022-11-21 JP JP2024508069A patent/JP7810491B2/ja active Active
- 2022-11-21 EP EP22920784.0A patent/EP4382933B1/en active Active
- 2022-11-21 ES ES22920784T patent/ES3065716T3/es active Active
- 2022-11-21 US US18/687,716 patent/US20240385249A1/en active Pending
- 2022-11-21 CN CN202280061417.1A patent/CN117957453A/zh active Pending
- 2022-11-21 WO PCT/KR2022/018435 patent/WO2023136455A1/ko not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110111018A (ko) * | 2010-04-02 | 2011-10-10 | 에스케이이노베이션 주식회사 | 배터리의 용량 열화 상태 측정 장치 및 방법 |
| KR101717001B1 (ko) * | 2014-07-25 | 2017-03-15 | 가부시끼가이샤 도시바 | 내부 상태 추정 시스템 및 그 추정 방법 |
| KR20180043048A (ko) * | 2016-10-19 | 2018-04-27 | 현대자동차주식회사 | 배터리 soh 추정 방법 |
| KR20180101823A (ko) * | 2017-03-06 | 2018-09-14 | 주식회사 엘지화학 | 배터리 셀 전압 데이터 처리 장치 및 방법 |
| KR20190019316A (ko) * | 2017-08-17 | 2019-02-27 | 삼성전자주식회사 | 배터리 상태 추정 방법 및 장치 |
| KR20220005739A (ko) | 2020-07-07 | 2022-01-14 | 삼성전기주식회사 | 터치 센싱 장치 및 이를 구비하는 전자 기기 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4382933A4 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4636418A1 (en) * | 2024-04-15 | 2025-10-22 | Samsung Sdi Co., Ltd. | Method and system for estimating battery state based on composite probability variable |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4382933B1 (en) | 2026-03-04 |
| EP4382933A4 (en) | 2025-03-12 |
| KR20230109916A (ko) | 2023-07-21 |
| KR102931475B1 (ko) | 2026-02-25 |
| EP4382933A1 (en) | 2024-06-12 |
| PL4382933T3 (pl) | 2026-04-27 |
| US20240385249A1 (en) | 2024-11-21 |
| ES3065716T3 (en) | 2026-05-07 |
| CN117957453A (zh) | 2024-04-30 |
| JP2024532750A (ja) | 2024-09-10 |
| JP7810491B2 (ja) | 2026-02-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021049753A1 (ko) | 배터리 진단 장치 및 방법 | |
| WO2021006566A1 (ko) | 배터리 셀 진단 장치 및 방법 | |
| JP7810491B2 (ja) | バッテリー状態推定方法およびその方法を提供するバッテリーシステム | |
| WO2021107323A1 (ko) | 배터리 셀 이상 퇴화 진단 장치 및 방법 | |
| WO2021125678A1 (ko) | 병렬 배터리 릴레이 진단 장치 및 방법 | |
| WO2021085808A1 (ko) | 온도 측정 장치, 이를 포함하는 배터리 장치 및 온도 측정 방법 | |
| WO2023136512A1 (ko) | 배터리 충전 심도 산출 장치 및 그것의 동작 방법 | |
| WO2024058428A1 (ko) | 배터리 셀 퇴화도 진단 방법 및 이를 이용하는 배터리 시스템 | |
| WO2023224211A1 (ko) | 배터리 진단 방법, 그 방법을 제공하는 배터리 진단 장치 및 배터리 시스템 | |
| WO2023229267A1 (ko) | 배터리 관리 장치 및 그것의 동작 방법 | |
| WO2023038262A1 (ko) | 배터리 셀의 용량 산출 장치 및 방법 | |
| WO2021125674A1 (ko) | 배터리 진단 장치 및 방법 | |
| WO2023132526A1 (ko) | 전력 저장 장치 및 그 운용 방법 | |
| WO2024232502A1 (ko) | 배터리 관리 장치 및 그것의 동작 방법 | |
| WO2023214641A1 (ko) | 배터리 진단 방법 및 그 방법을 제공하는 배터리 시스템 | |
| WO2023075163A1 (ko) | 배터리 장치, 배터리 관리 시스템 및 진단 방법 | |
| WO2023224195A1 (ko) | 배터리 진단 방법, 그 방법을 제공하는 배터리 진단 장치 및 배터리 시스템 | |
| WO2024014880A1 (ko) | 배터리 관리 장치 및 방법 | |
| WO2023249346A1 (ko) | 배터리 스와핑 시스템 및 이의 동작 방법 | |
| WO2023090692A1 (ko) | 배터리 시스템 | |
| WO2023153608A1 (ko) | 전류센서 진단 방법, 그 방법을 제공하는 전류센서 진단 시스템 및 배터리 시스템 | |
| WO2022085950A1 (ko) | 배터리 장치 및 저항 상태 추정 방법 | |
| WO2023101136A1 (ko) | 셀 전압 추정 방법 및 그 방법을 제공하는 배터리 시스템 | |
| WO2022114559A1 (ko) | 릴레이 상태 관리 장치 및 그것의 동작 방법 | |
| WO2024219571A1 (ko) | 배터리 상태 추정 방법 및 그 방법을 제공하는 배터리 시스템 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22920784 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024508069 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 18687716 Country of ref document: US |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202280061417.1 Country of ref document: CN |
|
| ENP | Entry into the national phase |
Ref document number: 2022920784 Country of ref document: EP Effective date: 20240308 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWG | Wipo information: grant in national office |
Ref document number: 2022920784 Country of ref document: EP |

