WO2024025228A1 - 배터리 관리 장치 및 그것의 동작 방법 - Google Patents
배터리 관리 장치 및 그것의 동작 방법 Download PDFInfo
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- WO2024025228A1 WO2024025228A1 PCT/KR2023/010215 KR2023010215W WO2024025228A1 WO 2024025228 A1 WO2024025228 A1 WO 2024025228A1 KR 2023010215 W KR2023010215 W KR 2023010215W WO 2024025228 A1 WO2024025228 A1 WO 2024025228A1
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- battery cell
- battery
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- controller
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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]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/12—Recording operating variables ; Monitoring of operating variables
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- G—PHYSICS
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- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/005—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing phase or frequency of 2 mutually independent oscillations in demodulators)
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- G—PHYSICS
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- 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
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- G—PHYSICS
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- 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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- 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
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
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- 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
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/545—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
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- B60L2240/54—Drive Train control parameters related to batteries
- B60L2240/547—Voltage
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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
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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
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
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- H01M10/00—Secondary cells; Manufacture thereof
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- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
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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
- Embodiments disclosed herein relate to a battery management device and method of operating the same.
- the secondary battery is a battery capable of charging and discharging, and includes both conventional Ni/Cd batteries, Ni/MH batteries, etc., and recent lithium ion batteries.
- lithium-ion batteries have the advantage of having a much higher energy density than conventional Ni/Cd batteries, Ni/MH batteries, etc.
- lithium-ion batteries can be manufactured in small and light sizes, so they are used as a power source for mobile devices. Recently, its range of use has expanded as a power source for electric vehicles, and it is attracting attention as a next-generation energy storage medium.
- Wireless BMS technology is a technology that wirelessly implements existing CAN (Controller Area Network) communication or Daisy Chain communication, which monitors multiple battery cell stacks in a slave BMS and transmits information to the master BMS.
- CAN Controller Area Network
- Daisy Chain communication which monitors multiple battery cell stacks in a slave BMS and transmits information to the master BMS.
- BMS generally determines the state of battery cells by measuring the time, temperature, voltage, and current required while repeatedly charging and discharging.
- temperature, voltage, and current alone do not reflect the detailed characteristics of the battery cell.
- One purpose of the embodiments disclosed in this document is to provide a battery management device and a method of operating the same that can measure and diagnose detailed characteristics inside the battery that are not reflected by characteristics such as voltage, current, and temperature.
- One purpose of the embodiments disclosed in this document is to provide a battery management device that can diagnose battery cells based on RF characteristics and a method of operating the same to predict battery cell failure and achieve safety when using a wireless BMS. there is.
- a battery management device includes a communication unit that transmits a first signal to a battery cell, a switch connecting the communication unit and the battery cell, and a control device corresponding to the first signal.
- 2 may include a controller that receives a signal and diagnoses the state of the battery cell based on the second signal.
- the first signal and the second signal may be radio frequency (RF) signals, and the second signal may be a reflected signal of the first signal.
- RF radio frequency
- the controller may diagnose the state of the battery cell by comparing the second signal with a signal related to the battery cell in a normal state.
- the communication unit transmits first signals corresponding to different transmission powers, and the controller receives second signals corresponding to the different transmission powers, and receives second signals corresponding to the different transmission powers.
- the state of the battery cell can be diagnosed based on the second signal.
- the communication unit transmits first signals corresponding to different frequencies, and the controller receives second signals corresponding to the different frequencies, and receives second signals corresponding to the different frequencies. Based on this, the state of the battery cell can be diagnosed.
- the controller controls the impedance, sensitivity change, PER (Peak Error Rate) change, saturation level, and reception strength of the battery cell based on the second signal. At least one of Signal Strength Indication (RSSI) can be diagnosed.
- RSSI Signal Strength Indication
- the controller may receive a third signal including voltage, current, and temperature information from the battery cell, and diagnose the state of the battery cell based on the second signal and the third signal. there is.
- the communication unit may be connected to the battery cell or antenna based on the operation of the switch.
- the controller when communicating with the battery cell monitoring device, controls the operation of the switch so that the communication unit is connected to the antenna, and when not communicating with the battery cell monitoring device, the communication unit controls the operation of the switch.
- the operation of the switch can be controlled to connect to the battery cell.
- the communication unit may transmit the first signal when not communicating with the battery cell monitoring device.
- the communication unit may transmit the first signal when the switch is connected to the battery cell.
- the communication unit may communicate wirelessly with a battery cell monitoring device through a radio frequency (RF) signal.
- RF radio frequency
- the communication unit may perform wireless communication when the switch is connected to an antenna.
- a method of operating a battery management device includes transmitting a first signal from a communication unit to a battery cell, receiving a second signal corresponding to the first signal from a controller, and receiving the second signal from the controller. and diagnosing the state of the battery cell based on a second signal, wherein the controller is connected to the communication unit through a switch, and the switch may connect the communication unit and the battery cell.
- the operation of the switch when communicating with the battery cell monitoring device, the operation of the switch is controlled so that the communication unit is connected to the antenna, or when not communicating with the battery cell monitoring device, the communication unit is connected to the battery cell.
- a step of controlling the operation of the switch may be further included.
- the step of diagnosing the state of the battery cell based on the second signal in the controller includes diagnosing the state of the battery cell by comparing the second signal with a signal related to a battery cell in a normal state. You can.
- the battery management device and its operating method according to an embodiment disclosed in this document include information related to impedance through RF signals in order to measure and diagnose detailed characteristics inside the battery that characteristics such as voltage, current, and temperature do not reflect. can be measured.
- the battery management device and its operating method according to an embodiment disclosed in this document can diagnose the state of the battery cell by transmitting an RF signal to the battery cell and receiving the corresponding signal when wireless communication is not performed.
- the battery management device and its operating method according to an embodiment disclosed in this document can control switches depending on whether RF signals are used for wireless communication or to diagnose battery cells.
- the battery management device and its operating method according to an embodiment disclosed in this document can measure information related to impedance for diagnosis of a battery cell through RFIC for wireless communication without adding another device.
- FIG. 1 is a block diagram showing the configuration of a battery pack according to an embodiment disclosed in this document.
- FIG. 2 is a block diagram showing a battery management device and a battery cell according to an embodiment disclosed in this document.
- FIG. 3 is a diagram illustrating an example of a battery management device transmitting an RF signal and receiving a corresponding signal according to an embodiment disclosed in this document.
- FIG. 4 is a flowchart showing a method of operating a battery management device according to an embodiment disclosed in this document.
- FIG. 5 is a flowchart specifically showing a method of operating a battery management device according to an embodiment disclosed in this document.
- Figure 6 is a block diagram showing the hardware configuration of a computing system for performing a method of operating a battery management device according to an embodiment disclosed in this document.
- FIG. 1 is a block diagram showing the configuration of a battery pack according to an embodiment disclosed in this document.
- the battery pack 1 according to an embodiment disclosed in this document includes battery cells 11, 12, 13, 14, 15, and 16, and battery management devices 10, 20, 30, 40, and 50. , 60) and an upper controller 70.
- the battery cells 11, 12, 13, 14, 15, and 16 are the first battery cell 11, the second battery cell 12, the third battery cell 13, the fourth battery cell 14, and the fifth battery cell. It may include a battery cell 15 and a sixth battery cell 16. According to the embodiment, the first battery cell 11, the second battery cell 12, the third battery cell 13, the fourth battery cell 14, the fifth battery cell 15, and the sixth battery cell ( 16) Each may include one or multiple battery cells.
- the battery pack 1 is shown as including six battery cells 11, 12, 13, 14, 15, and 16, but is not limited thereto, and the battery pack 1 may include one or n (n). may include (a natural number) number of battery cells.
- the battery management devices 10, 20, 30, 40, 50, and 60 include a first battery management device 10, a second battery management device 20, a third battery management device 30, and a fourth battery management device ( 40), a fifth battery management device 50, and a sixth battery management device 60.
- the battery management devices (10, 20, 30, 40, 50, and 60) measure the voltage, current, and temperature of the corresponding battery cells (11, 12, 13, 14, 15, and 16), respectively.
- a device that receives input may include a plurality of terminals and a circuit connected to these terminals to process the input values.
- the battery management devices (10, 20, 30, 40, 50, 60) may control ON/OFF of relays or contactors, and may be used to control battery cells (11, 12, 13, 14, 15, 16).
- the battery pack 1 is shown as including six battery management devices 10, 20, 30, 40, 50, and 60, but is not limited thereto, and the battery pack 1 includes one or m( m is a natural number) may include battery management devices.
- the battery management devices 10, 20, 30, 40, 50, and 60 may include a wireless communication unit.
- the wireless communication unit may be implemented as an antenna.
- the wireless communication unit may include an RFIC.
- the battery management devices 10, 20, 30, 40, 50, and 60 may perform wireless communication with the upper controller 70 through a wireless communication unit based on a radio frequency (RF) signal.
- RF radio frequency
- the battery management device (10, 20, 30, 40, 50, 60) sends information about the battery cell (e.g., voltage, current, temperature, etc. of the battery cell) to the upper controller 70 through the wireless communication unit. Can be sent.
- the battery management devices 10, 20, 30, 40, 50, and 60 may be slave BMSs, and the upper controller 70 may be a master BMS.
- the upper controller 70 may transmit control signals for the battery cells 11, 12, 13, 14, 15, and 16 to the battery management devices 10, 20, 30, 40, 50, and 60. Accordingly, the operation of the battery management devices 10, 20, 30, 40, 50, and 60 may be controlled based on signals applied from the upper controller 70.
- each of the battery management devices 10, 20, 30, 40, 50, and 60 may be substantially the same as the battery management device 100 of FIG. 2. Additionally, each of the battery cells 11, 12, 13, 14, 15, and 16 may be substantially the same as the battery cell 200 of FIG. 2.
- FIG. 2 is a block diagram showing a battery management device and a battery cell according to an embodiment disclosed in this document.
- the battery management device 100 may include a communication unit 110, a controller 120, a switch 130, and an antenna 140.
- the communication unit 110 may communicate wirelessly with a battery cell monitoring device through a radio frequency (RF) signal.
- RF radio frequency
- the communication unit 110 may wirelessly communicate with a battery cell monitoring device by transmitting a radio frequency signal through the switch 130 and the antenna 140.
- the battery cell monitoring device may include the upper controller 70 of FIG. 1.
- the communication unit 110 may include an RFIC.
- the controller 120 may be connected to the battery cell 200. Additionally, the controller 120 may be connected to the communication unit 110 and the switch 130. According to the embodiment, the controller 120 may control the operation of the switch 130.
- the switch 130 may connect the communication unit 110 and the battery cell 200. Additionally, the switch 130 may connect the communication unit 110 and the antenna 140. That is, based on the operation of the switch 130, the communication unit 110 may be connected to either the battery cell 200 or the antenna 140.
- FIG. 3 is a diagram illustrating an example of a battery management device transmitting an RF signal and receiving a corresponding signal according to an embodiment disclosed in this document.
- the controller 120 may receive a second signal corresponding to the first signal transmitted from the communication unit 110 to the battery cell through the switch 130.
- the switch 130 may connect the communication unit 110, the controller 120, and the battery cell 200.
- the first signal and the second signal may be RF signals, and the second signal may be a reflected signal of the first signal.
- the battery management device 100 may include a plurality of capacitors 150.
- a capacitor 150 may be included between the switch 130 and the antenna 140 to transmit only RF signals.
- a capacitor 150 may be included between the switch 130 and the battery cell 200 to transmit only RF signals.
- a plurality of inductors (not shown) may be further included between the controller 120 and the battery cell 200.
- the controller 120 may diagnose the state of the battery cell 200 based on the second signal received in response to the first signal transmitted from the communication unit 110. For example, the controller 120 may diagnose the state of the battery cell 200 by comparing the received second signal with a signal related to the battery cell in a normal state. According to an embodiment, the controller 120 may diagnose that the battery cell 200 is not in a normal state when the received second signal and a signal related to a battery cell in a normal state differ by more than a preset value. Therefore, the battery management device 100 can diagnose DC characteristics based on the AC signal (RF signal, second signal) received in response to the AC signal (RF signal, first signal) transmitted from the communication unit 110. The state of the missing battery cell 200 can be accurately diagnosed.
- the controller 120 controls the impedance, sensitivity change, PER (Peak Error Rate) change, saturation level, and reception strength of the battery cell 200 based on the second signal. (Received Signal Strength Indication, RSSI) can be diagnosed.
- signals related to battery cells in a normal state may be pre-stored values. That is, the battery management device 100 may further include a memory, and signals related to battery cells in a normal state may be stored in the memory.
- the controller 120 may receive a third signal including voltage, current, and temperature information from the battery cell 200.
- the controller 120 may diagnose the state of the battery cell based on the second signal and the third signal.
- the battery management device 100 may diagnose the state of the battery cell 200 related to impedance, which cannot be diagnosed based on the third signal including voltage, current, and temperature information, based on the second signal.
- the communication unit 110 may be connected to the battery cell 200 or the antenna 140 based on the operation of the switch 130. For example, when communicating with a battery cell monitoring device, the communication unit 110 may be connected to the antenna 140 through the switch 130. For another example, when not communicating with the battery cell monitoring device, the communication unit transmits an RF signal to the battery cell 200 so that the controller 120 can diagnose the state of the battery cell 200 through the reflected signal. 110 may be connected to the battery cell 200 and the controller 120 through the switch 130.
- the communication unit 110 may transmit the first signal when not communicating with the battery cell monitoring device.
- the communication unit 110 may transmit the first signal when the switch 130 is connected to the battery cell 200. Additionally, the communication unit 110 can communicate wirelessly when the switch 130 is connected to the antenna 140.
- the controller 120 may control the switch 130.
- the controller 120 may control the operation of the switch 130 so that the communication unit 110 is connected to the antenna 140.
- the controller 120 may control the operation of the switch 130 so that the communication unit 110 is connected to the battery cell 200.
- the communication unit 110 may transmit first signals corresponding to different transmission powers.
- the communication unit 110 may transmit a first signal corresponding to a different transmission power by changing the power of the RFIC.
- the controller 120 may receive second signals corresponding to different transmission powers and diagnose the state of the battery cell based on the second signals corresponding to the different transmission powers received for each transmission power. there is. Accordingly, the battery management device 100 can more accurately diagnose the state of the battery cell 200 based on signals corresponding to various transmission powers.
- the communication unit 110 may transmit first signals corresponding to different frequencies.
- the communication unit 110 may transmit first signals corresponding to different frequencies by changing the power of the RFIC.
- the controller 120 may receive second signals corresponding to different frequencies, and may diagnose the state of the battery cell based on the second signals corresponding to different frequencies received for each frequency. Accordingly, the battery management device 100 can more accurately diagnose the state of the battery cell 200 based on signals corresponding to various frequencies.
- the controller 120 may diagnose the state of the battery cell 200 by diagramming the second signal corresponding to different transmission powers or frequencies in a graph.
- FIG. 4 is a flowchart showing a method of operating a battery management device according to an embodiment disclosed in this document. The operations shown in FIG. 4 may be performed through the battery management device 100 and the battery cell 200 shown in FIG. 2.
- the operating method of the battery management device 100 includes transmitting a first signal to a battery cell through a switch (S110), and transmitting a second signal corresponding to the first signal. It may include receiving a signal (S120) and diagnosing the state of the battery cell based on the second signal (S130).
- the communication unit 110 may transmit the first signal to the battery cell 200 through the switch 130.
- the communication unit 110 may communicate wirelessly with a battery cell monitoring device through a radio frequency (RF) signal.
- the communication unit 110 may wirelessly communicate with a battery cell monitoring device by transmitting a radio frequency signal through the switch 130 and the antenna 140.
- RF radio frequency
- the controller 120 may receive a second signal corresponding to the first signal transmitted from the communication unit 110.
- the controller 120 may be connected to the battery cell 200. Additionally, the controller 120 may be connected to the communication unit 110 and the switch 130.
- the first signal and the second signal may be RF signals, and the second signal may be a reflected signal of the first signal.
- the controller 120 may diagnose the state of the battery cell based on the received second signal. For example, the controller 120 may diagnose the state of the battery cell 200 by comparing the received second signal with a signal related to the battery cell in a normal state. According to an embodiment, the controller 120 may diagnose that the battery cell 200 is not in a normal state when the received second signal and a signal related to a battery cell in a normal state differ by more than a preset value. Therefore, the battery management device 100 can diagnose DC characteristics based on the AC signal (RF signal, second signal) received in response to the AC signal (RF signal, first signal) transmitted from the communication unit 110. The state of the missing battery cell 200 can be accurately diagnosed.
- the AC signal RF signal, second signal
- the communication unit 110 may transmit the first signal for each transmission power.
- the communication unit 110 may transmit the first signal for each transmission power by changing the power of the RFIC.
- the controller 120 may receive the second signal for each transmission power and diagnose the state of the battery cell based on the second signal received for each transmission power. Accordingly, the battery management device 100 can more accurately diagnose the state of the battery cell 200 based on signals of various powers.
- the communication unit 110 may transmit the first signal for each frequency.
- the communication unit 110 may transmit the first signal for each frequency by changing the frequency of the RFIC.
- the controller 120 may receive the second signal for each frequency and diagnose the state of the battery cell based on the second signal received for each frequency. Accordingly, the battery management device 100 can more accurately diagnose the state of the battery cell 200 based on signals of various frequencies.
- FIG. 5 is a flowchart specifically showing a method of operating a battery management device according to an embodiment disclosed in this document.
- a method of operating the battery management device 100 may include a step (S210) of checking whether communication is performed with a battery cell monitoring device, and battery cell monitoring. It may include controlling the switch to be connected to the battery cell when not communicating with the device (S220) and controlling the switch to be connected to the antenna when communicating with the battery cell monitoring device (S230).
- the controller 120 may check whether the controller 120 is communicating with the battery cell monitoring device through the communication unit 110.
- the controller 120 may control the switch 130 and control the communication unit 110 to be connected to either the antenna 140 or the battery cell 200.
- the controller 120 may control the switch 130 to be connected to the battery cell 200 in step S220.
- the communication unit 110 may transmit an RF signal to the battery cell 200 to enable the controller 120 to diagnose the state of the battery cell 200 through the reflected signal.
- the controller 120 may control the switch 130 to be connected to the antenna 140 in step S230.
- Figure 6 is a block diagram showing the hardware configuration of a computing system for performing a method of operating a battery management device according to an embodiment disclosed in this document.
- the computing system 1000 may include an MCU 1010, a memory 1020, an input/output I/F 1030, and a communication I/F 1040. there is.
- the MCU 1010 stores various programs stored in the memory 1020 (e.g., a battery pack voltage or current collection program, a wireless communication program, a battery cell status diagnosis program, a battery cell RF signal processing program, and a battery cell VIT (voltage , current, temperature) signal processing program, relay control program, etc.), and through these programs, various information including RF signals received from the battery cell or current, voltage, and temperature information of the battery cell are processed. It may be a processor that performs the functions of the controller included in the battery management device shown in FIG. 2.
- the memory 1020 can store various programs such as a battery cell wireless communication program, a battery cell status diagnosis program, a battery cell RF signal processing program, a battery cell VIT (voltage, current, temperature) signal processing program, and a relay control program. Additionally, the memory 1020 can store various types of information, such as RF signals received from battery cells or current, voltage, and temperature information of battery cells.
- Memory 1020 may be volatile memory or non-volatile memory.
- the memory 1020 as a volatile memory may use RAM, DRAM, SRAM, etc.
- the memory 1020 as a non-volatile memory may be ROM, PROM, EAROM, EPROM, EEPROM, flash memory, etc.
- the examples of memories 1020 listed above are merely examples and are not limited to these examples.
- the input/output I/F (1030) is an interface that connects the MCU (1010) with input devices (not shown) such as a keyboard, mouse, and touch panel, and output devices such as a display (not shown) to transmit and receive data. can be provided.
- the communication I/F 1040 is a component that can transmit and receive various data with a server, and may be various devices that can support wired or wireless communication.
- the battery management device may transmit and receive RF signals received from various battery cells or current, voltage, and temperature information of the battery cells from a separately provided external server through the communication I/F 1040.
- the computer program according to an embodiment disclosed in this document may be recorded in the memory 1020 and processed by the MCU 1010, so that it may be implemented as a module that performs each function shown in FIG. 2, for example. there is.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Sustainable Energy (AREA)
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Tests Of Electric Status Of Batteries (AREA)
Abstract
Description
Claims (16)
- 배터리 셀로 제1 신호를 송신하는 통신부;상기 통신부와 상기 배터리 셀을 연결하는 스위치; 및상기 스위치의 동작을 제어하고, 상기 제1 신호에 대응되는 제2 신호를 수신하고, 상기 제2 신호에 기반하여 배터리 셀의 상태를 진단하는, 컨트롤러를 포함하는 배터리 관리 장치.
- 제 1 항에 있어서,상기 제1 신호 및 상기 제2 신호는 RF(Radio Frequency) 신호이고,상기 제2 신호는 상기 제1 신호의 반사 신호인, 배터리 관리 장치.
- 제 1 항에 있어서,상기 컨트롤러는,상기 제2 신호와 정상 상태의 배터리 셀과 관련된 신호를 비교하여 상기 배터리 셀의 상태를 진단하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 통신부는,서로 다른 송신 파워에 대응되는 제1 신호를 송신하고,상기 컨트롤러는,상기 서로 다른 송신 파워에 대응되는 제2 신호를 수신하고,상기 서로 다른 송신 파워에 대응되는 제2 신호에 기반하여 상기 배터리 셀의 상태를 진단하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 통신부는,서로 다른 주파수에 대응되는 제1 신호를 송신하고,상기 컨트롤러는,상기 서로 다른 주파수에 대응되는 제2 신호를 수신하고,상기 서로 다른 주파수에 대응되는 제2 신호에 기반하여 상기 배터리 셀의 상태를 진단하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 컨트롤러는,상기 제2 신호에 기반하여 상기 배터리 셀의 임피던스(Impedance), 민감도(Sensitivity) 변화, PER(Peak Error Rate) 변화, 포화 레벨(Saturation level) 및 수신 강도(Received Signal Strength Indication, RSSI) 중 적어도 어느 하나를 진단하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 컨트롤러는,상기 배터리 셀로부터 전압, 전류, 온도 정보를 포함하는 제3 신호를 수신하고,상기 제2 신호 및 상기 제3 신호에 기반하여 상기 배터리 셀의 상태를 진단하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 통신부는,상기 스위치의 동작에 기반하여 상기 배터리 셀 또는 안테나에 연결되는, 배터리 관리 장치.
- 제 8 항에 있어서,상기 컨트롤러는,상기 배터리 셀 모니터링 장치와 통신하는 경우, 상기 통신부가 상기 안테나와 연결되도록 상기 스위치의 동작을 제어하고,상기 배터리 셀 모니터링 장치와 통신하지 않는 경우, 상기 통신부가 상기 배터리 셀과 연결되도록 상기 스위치의 동작을 제어하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 통신부는,상기 배터리 셀 모니터링 장치와 통신하지 않는 경우, 상기 제1 신호를 송신하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 통신부는,상기 스위치가 상기 배터리 셀에 접속된 경우 상기 제1 신호를 송신하는, 배터리 관리 장치.
- 제 1 항에 있어서,상기 통신부는,배터리 셀 모니터링 장치와 무선 주파수(Radio Frequency, RF) 신호를 통해 무선 통신하는, 배터리 관리 장치.
- 제 12 항에 있어서,상기 통신부는,상기 스위치가 안테나에 접속된 경우 상기 무선 통신하는, 배터리 관리 장치.
- 통신부에서 배터리 셀로 제1 신호를 송신하는 단계;컨트롤러에서 상기 제1 신호에 대응되는 제2 신호를 수신하는 단계; 및상기 컨트롤러에서 상기 제2 신호에 기반하여 상기 배터리 셀의 상태를 진단하는 단계; 를 포함하고,상기 컨트롤러는, 스위치를 통해 상기 통신부와 연결되고,상기 스위치는 상기 통신부와 상기 배터리 셀을 연결하는, 배터리 관리 장치의 동작 방법.
- 제 14 항에 있어서,상기 배터리 셀 모니터링 장치와 통신하는 경우 상기 통신부가 안테나와 연결되도록 상기 스위치의 동작을 제어하거나,상기 배터리 셀 모니터링 장치와 통신하지 않는 경우, 상기 통신부가 상기 배터리 셀과 연결되도록 상기 스위치의 동작을 제어하는 단계; 를 더 포함하는 배터리 관리 장치의 동작 방법.
- 제 14 항에 있어서,상기 컨트롤러에서 상기 제2 신호에 기반하여 상기 배터리 셀의 상태를 진단하는 단계는,상기 제2 신호와 정상 상태의 배터리 셀과 관련된 신호를 비교하여 상기 배터리 셀의 상태를 진단하는, 배터리 관리 장치의 동작 방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/992,648 US20260058226A1 (en) | 2022-07-28 | 2023-07-17 | Battery Management Apparatus and Operating Method Thereof |
| JP2025500262A JP2025521930A (ja) | 2022-07-28 | 2023-07-17 | 電池管理装置およびその動作方法 |
| EP23846887.0A EP4564032A4 (en) | 2022-07-28 | 2023-07-17 | BATTERY MANAGEMENT DEVICE AND ITS OPERATING PROCESS |
| CN202380051979.2A CN119487403A (zh) | 2022-07-28 | 2023-07-17 | 电池管理设备及其操作方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220094265A KR102916592B1 (ko) | 2022-07-28 | 2022-07-28 | 배터리 관리 장치 및 그것의 동작 방법 |
| KR10-2022-0094265 | 2022-07-28 |
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| WO2024025228A1 true WO2024025228A1 (ko) | 2024-02-01 |
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| PCT/KR2023/010215 Ceased WO2024025228A1 (ko) | 2022-07-28 | 2023-07-17 | 배터리 관리 장치 및 그것의 동작 방법 |
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| US (1) | US20260058226A1 (ko) |
| EP (1) | EP4564032A4 (ko) |
| JP (1) | JP2025521930A (ko) |
| KR (1) | KR102916592B1 (ko) |
| CN (1) | CN119487403A (ko) |
| WO (1) | WO2024025228A1 (ko) |
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| KR20250166412A (ko) * | 2024-05-20 | 2025-11-28 | 주식회사 부명 | Rf 신호들을 이용하는 이차 전지 검사 장치 |
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| JP2002084207A (ja) * | 2000-09-07 | 2002-03-22 | Murata Mfg Co Ltd | 無線装置 |
| JP6032025B2 (ja) * | 2013-01-22 | 2016-11-24 | 日立化成株式会社 | 蓄電池状態検知方法及び蓄電池状態検知装置 |
| KR20180010869A (ko) * | 2016-07-22 | 2018-01-31 | 주식회사 엘지화학 | 배터리 무선 제어 시스템 및 방법 |
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| KR20220094265A (ko) | 2020-12-28 | 2022-07-06 | 주식회사 삼양사 | 내스크래치성이 향상되고 내충격성이 우수한 공중합체 및 그 제조방법 |
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| JP5483155B2 (ja) * | 2009-06-02 | 2014-05-07 | 横河電機株式会社 | 電気化学反応計測方法および電気化学反応計測装置 |
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| JP5879294B2 (ja) * | 2013-03-29 | 2016-03-08 | 日立オートモティブシステムズ株式会社 | 電池システム |
| US11982716B2 (en) * | 2020-09-04 | 2024-05-14 | Analog Devices, Inc. | Self-characterizing smart cells for battery lifecycle management |
-
2022
- 2022-07-28 KR KR1020220094265A patent/KR102916592B1/ko active Active
-
2023
- 2023-07-17 US US18/992,648 patent/US20260058226A1/en active Pending
- 2023-07-17 EP EP23846887.0A patent/EP4564032A4/en active Pending
- 2023-07-17 JP JP2025500262A patent/JP2025521930A/ja active Pending
- 2023-07-17 WO PCT/KR2023/010215 patent/WO2024025228A1/ko not_active Ceased
- 2023-07-17 CN CN202380051979.2A patent/CN119487403A/zh active Pending
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| JP2002084207A (ja) * | 2000-09-07 | 2002-03-22 | Murata Mfg Co Ltd | 無線装置 |
| JP6032025B2 (ja) * | 2013-01-22 | 2016-11-24 | 日立化成株式会社 | 蓄電池状態検知方法及び蓄電池状態検知装置 |
| JP6905985B2 (ja) * | 2015-12-22 | 2021-07-21 | ヴィート エヌブイ | 高電圧バッテリの特性を測定するための装置 |
| JP2019527528A (ja) * | 2016-06-28 | 2019-09-26 | リニアー テクノロジー エルエルシー | バッテリシステムのための無線感知 |
| KR20180010869A (ko) * | 2016-07-22 | 2018-01-31 | 주식회사 엘지화학 | 배터리 무선 제어 시스템 및 방법 |
| KR20220094265A (ko) | 2020-12-28 | 2022-07-06 | 주식회사 삼양사 | 내스크래치성이 향상되고 내충격성이 우수한 공중합체 및 그 제조방법 |
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| Title |
|---|
| See also references of EP4564032A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240016134A (ko) | 2024-02-06 |
| JP2025521930A (ja) | 2025-07-10 |
| CN119487403A (zh) | 2025-02-18 |
| KR102916592B1 (ko) | 2026-01-22 |
| EP4564032A1 (en) | 2025-06-04 |
| EP4564032A4 (en) | 2025-11-26 |
| US20260058226A1 (en) | 2026-02-26 |
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