WO2019112257A1 - Dispositif électronique d'étalonnage de batterie et procédé de fonctionnement associé - Google Patents

Dispositif électronique d'étalonnage de batterie et procédé de fonctionnement associé Download PDF

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Publication number
WO2019112257A1
WO2019112257A1 PCT/KR2018/015099 KR2018015099W WO2019112257A1 WO 2019112257 A1 WO2019112257 A1 WO 2019112257A1 KR 2018015099 W KR2018015099 W KR 2018015099W WO 2019112257 A1 WO2019112257 A1 WO 2019112257A1
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WIPO (PCT)
Prior art keywords
battery
value
capacity
charging
electronic device
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Application number
PCT/KR2018/015099
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English (en)
Korean (ko)
Inventor
최형욱
김성훈
Original Assignee
삼성전자 주식회사
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Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Publication of WO2019112257A1 publication Critical patent/WO2019112257A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S320/00—Electricity: battery or capacitor charging or discharging
    • Y10S320/18—Indicator or display

Definitions

  • Various embodiments of the present invention are directed to a method and apparatus for calibrating a battery in an electronic device.
  • Electronic devices such as portable terminals, tablet computers, smart phones, notebook PCs, convertible notebook PCs, etc. may include batteries (or battery packs) that are power supplies.
  • the life of the battery included in the electronic device may be deteriorated by repeated charging and discharging.
  • the repetitive charging and discharging of the battery may cause the ions inside the battery to gradually deteriorate, and the maximum charging capacity of the battery may be lowered by the ions inside the deteriorated battery.
  • the electronic device can prevent the dangerous situation from occurring by changing the charge voltage and / or the charge current based on the maximum charge capacity of the electronic device.
  • the maximum charge capacity of a battery in an electronic device may temporarily decrease under certain conditions. For example, when the electronic device is discharged at a low temperature (for example, sub-zero) below the critical temperature, the maximum charge capacity of the battery may be lowered. In this case, the electronic device may change the charge voltage and / or charge current based on the reduced maximum charge capacity. However, the maximum charge capacity may not be restored to normal at a non-low temperature (for example, room temperature) below the critical temperature, so that the electronic device can not use the actual maximum charge capacity of the battery.
  • a non-low temperature for example, room temperature
  • various embodiments of the present invention provide a battery calibration method and apparatus for updating the maximum charge capacity of a battery in an electronic device to a value corresponding to the state of the battery.
  • an electronic device includes a battery, a charging circuit, and a processor, wherein the processor senses occurrence of an event for calibrating a maximum charging capacity of the battery, To change the voltage from a first value to a second value, and to control the charging circuit to charge the battery using the charging voltage changed to the second value.
  • a method of operating an electronic device includes sensing an event occurrence to calibrate a maximum charge capacity of a battery included in the electronic device, determining a charge voltage of the charge circuit for charging the battery Changing from a first value to a second value, and charging the battery using a charging circuit in which the charging voltage is changed to the second value.
  • the electronic device updates the maximum charge capacity of the battery to an accurate value corresponding to the state of the battery cell by performing up-conversion (or boosting) of the down-converted charge voltage during battery calibration, can do.
  • the electronic device can provide information about the capacity of the battery to the user based on the maximum charge capacity corresponding to the battery cell status, thereby causing an arbitrary shutdown ) And / or information loss can be prevented from occurring.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100, in accordance with various embodiments.
  • FIG. 2 is a block diagram 200 for a power management module 188 and a battery 189, in accordance with various embodiments.
  • FIG. 3 is a flowchart 300 of performing battery calibration in an electronic device according to various embodiments.
  • FIG. 4 is a detailed flowchart 400 of performing battery calibration in an electronic device according to various embodiments.
  • FIGS 5A-5E illustrate screen configurations for battery calibration in an electronic device according to various embodiments.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100, in accordance with various embodiments.
  • an electronic device 101 in a network environment 100 communicates with an electronic device 102 via a first network 198 (e.g., near-field wireless communication) or a second network 199 (E. G., Over-the-air, e. G., Over-the-air or wired).
  • the electronic device 101 is capable of communicating with the electronic device 104 through the server 108.
  • the electronic device 101 includes a processor 120, a memory 130, an input device 150, an audio output device 155, a display device 160, an audio module 170, a sensor module 176, an interface 177, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identity module 196, and an antenna module 197 ).
  • at least one of these components e.g., haptic module 179, camera module 180, or subscriber identification module 196) may be omitted from electronic device 101, or other components may be added .
  • some components such as, for example, a sensor module 176 (e.g., a fingerprint sensor, an iris sensor, or an illuminance sensor) embedded in a display device 160 Can be integrated.
  • Processor 120 drives at least one other component (e.g., hardware or software component) of electronic device 101 that is coupled to processor 120 by driving software, e.g., program 140, And can perform various data processing and arithmetic operations.
  • Processor 120 loads and processes commands or data received from other components (e.g., sensor module 176 or communication module 190) into volatile memory 132 and processes the resulting data into nonvolatile memory 134.
  • the processor 120 may operate in conjunction with a main processor 121 (e.g., a central processing unit or an application processor) and, independently, or additionally or alternatively, Or a co-processor 123 (e.g., a graphics processing unit, an image signal processor, a sensor hub processor, or a communications processor) specific to the designated function.
  • a main processor 121 e.g., a central processing unit or an application processor
  • a co-processor 123 e.g., a graphics processing unit, an image signal processor, a sensor hub processor, or a communications processor
  • the coprocessor 123 may be operated separately from or embedded in the main processor 121.
  • the coprocessor 123 may be used in place of the main processor 121, for example, while the main processor 121 is in an inactive (e.g., sleep) state, At least one component (e.g., display 160, sensor module 176, or communications module 176) of the components of electronic device 101 (e.g., 190) associated with the function or states.
  • the coprocessor 123 e.g., an image signal processor or communications processor
  • the coprocessor 123 is implemented as a component of some other functionally related component (e.g., camera module 180 or communication module 190) .
  • Memory 130 may store various data used by at least one component (e.g., processor 120 or sensor module 176) of electronic device 101, e.g., software (e.g., program 140) And input data or output data for instructions related thereto.
  • the memory 130 may include a volatile memory 132 or a non-volatile memory 134.
  • Program 140 may be software stored in memory 130 and may include, for example, an operating system 142, middleware 144, application 146, or a basic input output system program .
  • the input device 150 is an apparatus for receiving a command or data to be used for a component (e.g., the processor 120) of the electronic device 101 from the outside (e.g., a user) of the electronic device 101, , A microphone, a mouse, or a keyboard.
  • a component e.g., the processor 120
  • the sound output device 155 is a device for outputting a sound signal to the outside of the electronic device 101.
  • the sound output device 155 may be a speaker for general use such as a multimedia reproduction or a sound reproduction, .
  • the receiver may be formed integrally or separately with the speaker.
  • Display device 160 may be an apparatus for visually providing information to a user of electronic device 101 and may include, for example, a display, a hologram device, or a projector and control circuitry for controlling the projector. According to one embodiment, the display device 160 may include a touch sensor or a pressure sensor capable of measuring the intensity of the pressure on the touch.
  • the audio module 170 is capable of bi-directionally converting sound and electrical signals. According to one embodiment, the audio module 170 may acquire sound through the input device 150, or may be connected to the audio output device 155, or to an external electronic device (e.g., Electronic device 102 (e.g., a speaker or headphone)).
  • an external electronic device e.g., Electronic device 102 (e.g., a speaker or headphone)
  • the sensor module 176 may generate an electrical signal or data value corresponding to an internal operating state (e.g., power or temperature) of the electronic device 101, or an external environmental condition.
  • the sensor module 176 may be a gesture sensor, a gyro sensor, a barometric sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared sensor, Or an illuminance sensor.
  • the interface 177 may support a designated protocol that may be wired or wirelessly connected to an external electronic device (e.g., the electronic device 102).
  • the interface 177 may include a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital interface
  • audio interface an audio interface
  • the connection terminal 178 may be a connector such as an HDMI connector, a USB connector, an SD card connector, or an audio connector that can physically connect the electronic device 101 and an external electronic device (e.g., the electronic device 102) (E.g., a headphone connector).
  • an HDMI connector such as an HDMI connector, a USB connector, an SD card connector, or an audio connector that can physically connect the electronic device 101 and an external electronic device (e.g., the electronic device 102) (E.g., a headphone connector).
  • the haptic module 179 may convert electrical signals into mechanical stimuli (e.g., vibrations or movements) or electrical stimuli that the user may perceive through tactile or kinesthetic sensations.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 can capture a still image and a moving image.
  • the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.
  • the power management module 188 is a module for managing the power supplied to the electronic device 101, and may be configured as at least a part of, for example, a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 is an apparatus for supplying power to at least one component of the electronic device 101 and can be, for example, a non-rechargeable primary battery, a rechargeable secondary battery (e.g., a lithium ion battery) Battery.
  • a non-rechargeable primary battery e.g., a lithium ion battery
  • a rechargeable secondary battery e.g., a lithium ion battery
  • the communication module 190 is responsible for establishing a wired or wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108) Lt; / RTI > Communication module 190 may include one or more communication processors that support wired communication or wireless communication, operating independently of processor 120 (e.g., an application processor).
  • the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (E.g., a local area network (LAN) communication module, or a power line communication module), and the corresponding communication module may be used to communicate with a first network 198 (e.g., Bluetooth, WiFi direct, Communication network) or a second network 199 (e.g., a telecommunications network such as a cellular network, the Internet, or a computer network (e.g., a LAN or WAN)).
  • a wireless communication module 192 e.g., a cellular communication module, a short range wireless communication module, or a global navigation satellite system (GNSS) communication module
  • GNSS global navigation satellite system
  • wired communication module 194 E.g., a local area network (LAN) communication module, or a power line communication module
  • the wireless communication module 192 may use the user information stored in the subscriber identification module 196 to identify and authenticate the electronic device 101 within the communication network.
  • the antenna module 197 may include one or more antennas for externally transmitting or receiving signals or power.
  • the communication module 190 e.g., the wireless communication module 192 may transmit signals to or receive signals from an external electronic device via an antenna suitable for the communication method.
  • Some of the components are connected to each other via a communication method (e.g., bus, general purpose input / output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI) (Such as commands or data) can be exchanged between each other.
  • a communication method e.g., bus, general purpose input / output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI) (Such as commands or data) can be exchanged between each other.
  • the command or data may be transmitted or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199.
  • Each of the electronic devices 102 and 104 may be the same or a different kind of device as the electronic device 101.
  • all or a portion of the operations performed in the electronic device 101 may be performed in another or a plurality of external electronic devices.
  • the electronic device 101 in the event that the electronic device 101 has to perform some function or service automatically or upon request, the electronic device 101 may be capable of executing the function or service itself, And may request the external electronic device to perform at least some functions associated therewith.
  • the external electronic device receiving the request can execute the requested function or additional function and transmit the result to the electronic device 101.
  • the electronic device 101 can directly or additionally process the received result to provide the requested function or service.
  • cloud computing, distributed computing, or client-server computing technology may be used.
  • FIG. 2 is a block diagram 200 for a power management module 188 and a battery 189, in accordance with various embodiments.
  • the power management module 188 of FIG. 2 may be the power management module 188 of FIG. 1, and the battery 189 of FIG. 2 may be the battery 180 of FIG.
  • the power management module 188 may include a charging circuit 210, a power regulator 220, or a fuel gauge 230.
  • the charging circuit 210 can charge the battery 189 using electric power supplied from an external power source to the electronic device 101.
  • the charging circuit 210 may be configured to operate in accordance with the type of external power source (e.g., power adapter, USB or wireless charging), the amount of power available from the external power source (E.g., normal charging or rapid charging) based on at least some of the attributes of the battery 189 and may charge the battery 189 using the selected charging mode.
  • the external power source may, for example, be wired through a connection terminal 178 or wirelessly connected via an antenna module 197.
  • the power regulator 220 may generate a plurality of powers having different voltages or different current levels by adjusting the voltage level or the current level of the power supplied from the external power source or the battery 189. [ The power regulator 220 may adjust the power of the external power supply or battery 189 to a voltage or current level suitable for each component of the components included in the electronic device 101. [ According to one embodiment, the power regulator 220 may be implemented in the form of a low dropout (LDO) regulator or a switching regulator.
  • LDO low dropout
  • the fuel gauge 230 may measure the usage status information of the battery 189 (e.g., the capacity of the battery, the number of charge / discharge cycles, the voltage, or the temperature).
  • the power management module 188 may use the charging circuit 210, the voltage regulator 220 or the fuel gauge 230 to determine the state of charge of the battery 189 based at least in part on the measured usage state information, (E.g., lifetime, overvoltage, undervoltage, overcurrent, overcharge, overdischarge, overheat, short-circuit, or swelling) associated with the charge and determine at least a portion of the determined charge state information It is possible to adjust the charging of the battery 189 (e.g., charge current, voltage decrease, or charge stop) if it is determined that the battery 189 is in an abnormal state or a normal state. According to the temporal example, at least some of the functions of the power management module 188 may be performed by an external control device (e.g., processor 120).
  • an external control device e.g., processor 120.
  • Battery 189 may include a battery protection circuit (PCM)
  • the battery protection circuit 240 may perform various functions (e.g., a pre-shutdown function) to prevent degradation or burn-off of the battery 189.
  • the battery protection circuit 240 may further or alternatively perform cell balancing, measure the capacity of the battery (e.g., maximum charge capacity, remaining capacity), measure the number of charge and discharge cycles, measure temperature, And a battery management system (BMS) (not shown).
  • PCM battery protection circuit
  • the battery protection circuit 240 may perform various functions (e.g., a pre-shutdown function) to prevent degradation or burn-off of the battery 189.
  • the battery protection circuit 240 may further or alternatively perform cell balancing, measure the capacity of the battery (e.g., maximum charge capacity, remaining capacity), measure the number of charge and discharge cycles, measure temperature, And a battery management system (BMS) (not shown).
  • BMS battery management system
  • the usage status information or the charge status information of the battery 189 may be provided to a corresponding one of the fuel gauge 230, power management module 188, or sensor module 276 Sensor). ≪ / RTI > According to one embodiment, the corresponding sensor (e.g., temperature sensor) of the sensor module 176 may be included as part of the battery protection circuit 240, or may be a separate device disposed adjacent to the battery 189 .
  • the electronic device can be various types of devices.
  • the electronic device can be, for example, at least one of a portable communication device (e.g. a smart phone), a computer device, a portable computer device (e.g., notebook PC), a portable multimedia device, a portable medical device, a camera, a wearable device, . ≪ / RTI >
  • a portable communication device e.g. a smart phone
  • a computer device e.g., notebook PC
  • first component is "(functionally or communicatively) connected” or “connected” to another (second) component, May be connected directly to the component, or may be connected through another component (e.g., a third component).
  • module includes units comprised of hardware, software, or firmware and may be used interchangeably with terms such as, for example, logic, logic blocks, components, or circuits.
  • a module may be an integrally constructed component or a minimum unit or part thereof that performs one or more functions.
  • the module may be configured as an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document may include instructions stored on a machine-readable storage medium (e.g., internal memory 136 or external memory 138) readable by a machine (e.g., a computer) Software (e.g., program 140).
  • the device may include an electronic device (e.g., electronic device 101) in accordance with the disclosed embodiments as an apparatus capable of calling stored instructions from the storage medium and operating according to the called instructions.
  • a processor e.g., processor 120
  • the processor may perform the function corresponding to the instruction, either directly or using other components under the control of the processor.
  • the instructions may include code generated or executed by the compiler or interpreter.
  • a device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • 'non-temporary' means that the storage medium does not include a signal and is tangible, but does not distinguish whether data is stored semi-permanently or temporarily on the storage medium.
  • the method according to various embodiments disclosed herein may be provided in a computer program product.
  • a computer program product can be traded between a seller and a buyer as a product.
  • a computer program product may be distributed in the form of a machine readable storage medium (eg, compact disc read only memory (CD-ROM)) or distributed online through an application store (eg PlayStore TM ).
  • an application store eg PlayStore TM
  • at least a portion of the computer program product may be temporarily stored, or temporarily created, on a storage medium such as a manufacturer's server, a server of an application store, or a memory of a relay server.
  • Each of the components may be comprised of a single entity or a plurality of entities, and some of the subcomponents described above may be omitted, or other subcomponents May be further included in various embodiments.
  • some components e.g., modules or programs
  • the processor 120 may obtain the maximum charge capacity information of the battery 189 via the power management module 288.
  • the battery 189 may be a lithium ion battery (Li-Ion Battery).
  • the maximum charge capacity information may indicate the total chargeable capacity of the battery 189 at present.
  • the initial maximum charging capacity of the battery 189 may indicate the chargeable capacity of the battery 189 preset in manufacturing the battery 189.
  • the maximum charging capacity of the battery 189 may be varied by various variables such as the charging and / or discharging of the battery, the ambient temperature, the use conditions, and the like. According to one embodiment, the maximum charge capacity of the battery 189 may be reduced as the number of charge and / or discharge increases.
  • the maximum charging capacity of the battery 189 may be reduced by the ambient temperature drop of the electronic device 101.
  • the processor 120 generates information on the remaining capacity (or the currently charged capacity) of the battery 189 based on the maximum capacity information and outputs information on the remaining capacity of the battery 189 to the display device 160 ) (Or display).
  • the processor 120 may change the charge voltage and / or the charge current of the charge circuit 210 based on the maximum charge capacity of the battery 189.
  • the processor 120 may check the maximum charge capacity through a battery management system (not shown) included in the battery 189 periodically or at preset time of event occurrence, The charging voltage and / or the charging current of the battery 210 can be changed.
  • the processor 120 compares the maximum charging capacity of the battery 189 at the current time with the maximum charging capacity at the previous time, and if the maximum charging capacity at the current time is lower than the maximum charging capacity at the previous time, The charging voltage and / or the charging current can be adjusted downward based on the maximum charging capacity of the battery.
  • the processor 120 may sense the occurrence of a battery calibration (or calibration) event and perform a control operation for battery calibration.
  • the battery calibration may mean that the maximum charge capacity is updated corresponding to the battery cell state through charging and / or discharging of the battery 189.
  • the processor 120 may sense a user input requesting battery calibration through the input device 150 to detect that a battery calibration event has occurred.
  • the processor 120 may obtain information about the remaining capacity (or the currently charged capacity) of the battery 189 via the fuel gauge 230 of the power management module 188 when a battery calibration event occurs.
  • the information on the remaining capacity of the battery 189 may include information indicating a ratio of the maximum charging capacity of the battery 189 to the presently charged capacity.
  • the information on the remaining capacity of the battery 189 may include information on the current charged rate of the battery 189.
  • the processor 120 may determine whether a battery calibration is necessary, based on at least one of ambient temperature change of the electronic device 101, and maximum charge capacity change. For example, when the ambient temperature of the electronic device 101 is suddenly lowered below the threshold value and the ambient temperature becomes higher than the threshold value in the state where the maximum charge capacity is decreased, Can be detected. The processor 120 may control the display device 160 to display a message indicating that battery calibration is required when it is determined that the battery calibration is required.
  • the processor 120 may determine whether to perform a battery calibration operation based on at least one of an external power source and a remaining capacity. According to one embodiment, the processor 120 may compare the remaining capacity of the battery 189 with the threshold capacity to determine whether it is in a state capable of performing a battery calibration operation. For example, the processor 120 may determine that the battery calibration operation is in an impossible state when the remaining capacity of the battery 189 is greater than the threshold capacity. The processor 120 may control the display device 160 to display a message indicating that the battery 189 should be discharged below the critical capacity for battery calibration when the remaining capacity of the battery 189 is greater than the critical capacity have.
  • the critical capacity can be set in advance at the time of designing the electronic device 101. [ Critical capacity can be set differently by the operator and the designer.
  • the critical capacity may be set in view of the constraints associated with performing the charging of the battery 189.
  • the electronic device 101 may be configured such that the remaining capacity of the battery 189 is greater than the capacity of the battery 189 when the external power source (e.g., power adapter, USB or wireless charging) (For example, about 96%), and when the remaining capacity of the battery 189 exceeds the specific capacity, the battery 189 is not charged.
  • the critical capacity for battery calibration may be set to a value that is less than or equal to a certain capacity (e.g., a value of about 96% or less).
  • the processor 120 may determine whether or not it is in a state capable of performing a battery calibration operation, based on whether an external power source is sensed.
  • the processor 120 may control the display device 160 to determine that the battery calibration operation can not be performed if an external power source is not detected and to display a message requesting an external power connection for battery calibration .
  • the processor 120 may determine that the remaining capacity is less than or equal to the critical capacity and can perform the battery calibration operation when an external power source is detected.
  • the processor 120 may change the charging voltage of the charging circuit 210 from a first value to a second value if the battery calibration operation is enabled.
  • the first value may be a charge voltage value that is changed to a value less than the initial charge voltage value based on the maximum charge capacity of the battery 189 during operation of the electronic device 101.
  • the second value may be either an initial charge voltage value, a value obtained by multiplying the first value by a certain multiple, or a value obtained by adding an offset to the first value. This is illustrative, and the second value is not limited thereto. For example, the second value may be another value greater than the first value.
  • the initial charge voltage value may be a preset voltage value by the designer.
  • the initial charge voltage value may be set to 4.4V / Cell.
  • the charging voltage adjusted down to the first value based on the change in the maximum charging capacity of the battery 189, 1 < / RTI > value.
  • the initial charging voltage of the charging circuit 210 may be adjusted to 4.4 V / cell or about 3 V / cell as the maximum charging capacity of the battery 189 decreases.
  • the processor 120 changes the charging voltage of the charging circuit 210 adjusted to about 3 V / cell to 4.4 V / Cell, which is an initial charging voltage, for battery calibration, or a value obtained by adding an offset value to 3 V / cell Can be changed. For example, if the offset value is 1V / cell, the processor 120 may change the charge voltage from 3V / cell to 4V / cell.
  • the processor 120 may control the battery 189 to be buffered using the charging circuit 210 with the charging voltage changed to the second value.
  • the processor 120 detects that the battery 189 is fully charged through at least one of the battery management system (not shown) and the power management module 188 of the battery 189, Information on the maximum charging capacity of the battery 189 can be obtained.
  • the processor 120 may receive the maximum charge capacity information of the battery 189 calculated based on the buffer 189 from the battery management system (not shown) of the battery 189.
  • Processor 120 may control display device 160 to display a message indicating buffering.
  • the processor 120 may control to fully recharge the fully charged battery 189 and then perform battery calibration again.
  • the processor 120 may control the display 160 to display a message requesting that the battery 189 be recharged after a full discharge of the battery for a more accurate battery calibration, after the battery 189 is fully charged. have.
  • the message requesting to re-execute the battery calibration after the full discharge of the battery may include a message requesting to disconnect the electronic device 101 from the external power source.
  • the processor 120 supplies the external power source to the electronic device 101 for the full discharge of the battery 189 External power can be cut off.
  • the charging circuit 210 may charge the battery 189 based on the charging voltage and / or charging current changed by the processor 120.
  • the charging circuit 210 may output the charging voltage and / or the charging current set and / or changed by the control of the processor 120 to the battery 189.
  • the initial charging voltage of the charging circuit 210 can be preset by the designer.
  • the initial charging voltage of the charging circuit 210 may be set to 4.4 C / Cell.
  • the charging voltage of the charging circuit 210 can be changed based on the maximum charging capacity of the battery 189.
  • the battery 189 may determine the maximum charge capacity of the battery 189 via a battery management system (not shown).
  • the maximum charge capacity of the battery 189 may be determined by various factors.
  • the battery management system of the battery 189 may calculate the maximum charge capacity based on at least one of the ambient temperature of the electronic device 101, the charge current, and the charge voltage, And the maximum charge capacity can be calculated.
  • the battery management system of the battery 189 when the battery 189 is buffered by the battery calibration while the remaining capacity of the battery is 90%, the charged amount to be charged by the battery calibration is measured, The maximum charge capacity corresponding to the cell state of the current battery 189 can be calculated based on at least one of the battery remaining capacity before battery calibration.
  • processor 120 may change the charging voltage of charging circuit 210 from a first charging voltage to a second charging voltage when a battery calibration event occurs, The charging current can be changed to the second charging current.
  • electronic device 101 may include a battery (e.g., battery 189 of FIG. 1 or battery 189 of FIG. 2), a charging circuit (e.g., charging circuit 210 of FIG. 2, (E.g., power management module 188 of FIG. 1), and a processor (e.g., processor 120 of FIG. 1), the processor sensing an event occurrence to calibrate the maximum charge capacity of the battery, May be set to control the charging circuit to charge the battery using the charging voltage changed from the first value to the second value and to the second value.
  • a battery e.g., battery 189 of FIG. 1 or battery 189 of FIG. 2
  • a charging circuit e.g., charging circuit 210 of FIG. 2, (E.g., power management module 188 of FIG. 1)
  • a processor e.g., processor 120 of FIG. 1
  • the second value may be one of an initial charge voltage value of the charging circuit, a value obtained by multiplying the first value by a certain multiple, or a value obtained by adding the offset value to the first value have.
  • the first value may be a charge voltage value set to a value less than the initial charge voltage value based on a maximum charge capacity of the battery.
  • the maximum charge capacity of the battery may be reduced based on at least one of an ambient temperature of the electronic device, and a number of charge / discharge cycles of the battery.
  • the processor senses that the battery is fully charged using the charge voltage changed to the second value, and updates the maximum charge capacity of the battery based on the fully charged capacity of the battery .
  • the processor is further configured to determine whether the remaining capacity of the battery corresponding to the capacity charged by the charging voltage changed to the second value and the time when the occurrence of the event for calibrating the maximum charging capacity of the battery is detected
  • the maximum charge capacity of the battery can be updated based on at least one.
  • the apparatus further includes a display device, wherein the processor is further configured to determine, based on at least one of a change in the ambient temperature of the electronic device and a change in the maximum charge capacity of the battery, It is possible to control the display device to display a message indicating that calibration of the maximum charge capacity of the battery is required.
  • the processor is further configured to determine, in response to the occurrence of an event for calibrating a maximum charge capacity of the battery, whether the remaining capacity of the battery meets a reference condition,
  • the charging voltage of the charging circuit may be changed from the first value to the second value in response to the satisfaction of the reference condition.
  • the apparatus further includes a display device, wherein the processor controls the display device so as to display a message requesting discharge of the battery in response to the remaining capacity of the battery not satisfying the reference condition can do.
  • each operation may be performed sequentially, but not necessarily sequentially.
  • the order of each operation may be changed, and at least two operations may be performed in parallel.
  • the electronic device may be the electronic device 101 of Fig.
  • the electronic device may sense a battery calibration event at operation 301.
  • a processor e.g., processor 120
  • a processor e.g., processor 120
  • a processor may detect a change in the ambient temperature of the electronic device, and a change in the temperature of the electronic device.
  • a message indicating that the battery calibration is required through the display device 160 and / or the sound output device 155 may be output based on at least one of the change in the maximum charge capacity .
  • the processor e.g., processor 120 of the electronic device, in response to the message output indicating that the battery calibration is required,
  • the processor of the electronic device e.g., processor 120
  • the electronic device may change the charging voltage of the charging circuit (e.g., charging circuit 210) from operation 303 to a second value at operation 303.
  • a processor e. G., Processor 120
  • the charging voltage of a charging circuit may be a state that is downconverted from an initial charging voltage value to a first value based on a maximum charging capacity of the battery (e.g., battery 189) have.
  • a processor e.g., processor 120 of the electronic device may change the charge voltage down converted to a first value to a second value.
  • the second value may be an initial charge voltage value, a value obtained by multiplying the first value by a certain multiple, or a value obtained by adding the offset value to the first value.
  • the initial charging voltage value may be a preset value for charging the charging circuit (e.g., charging circuit 210) by the designer, for example, 4.4V / Cell.
  • the electronic device may proceed with charging using the altered charging voltage at operation 305.
  • a processor e.g., processor 120 of an electronic device may be configured to determine whether a charge circuit (e.g., charge circuit 210) So as to perform a charging operation.
  • the charging circuit e.g., charging circuit 210) may output the charging voltage changed to the second value to a battery (e.g., battery 189).
  • the processor e.g., processor 120 of the electronic device senses that the battery (e.g., battery 189) is fully charged using the charge voltage changed to the second value, (E.g., battery 189) can obtain the maximum charge capacity information of the updated battery (e.g., battery 189) based on the buffer.
  • a battery management system included in a battery (e.g., battery 189) of an electronic device may be based on at least one of the remaining capacity of the battery corresponding to the beginning of the battery calibration and the capacity charged in the battery during battery calibration , Calculate the maximum charge capacity corresponding to the cell state of the current battery, and provide the calculated maximum charge capacity to a processor (e.g., processor 120) of the electronic device.
  • a processor e.g., processor 120
  • FIG. 4 is a detailed flowchart 400 of performing battery calibration in an electronic device according to various embodiments.
  • Fig. 4 shows the battery calibration operation of Fig. 3 in more detail, and will be described with reference to Figs. 5A to 5E.
  • Figures 5A-5E illustrate screen configurations for battery calibration in an electronic device according to various embodiments.
  • each operation may be performed sequentially, but not necessarily sequentially.
  • the order of each operation may be changed, and at least two operations may be performed in parallel.
  • the electronic device may be the electronic device 101 of Fig.
  • the electronic device may sense that a battery calibration menu item is selected at operation 401.
  • a processor e.g., processor 120
  • a display device e.g., display device 160
  • the processor e.g., processor 120
  • the processor may determine that a battery calibration event has occurred if a user input to select a battery calibration menu item is detected.
  • the electronic device may determine at operation 403 whether an external power source is sensed.
  • a processor e.g., processor 120
  • may sense external power through a connection terminal e.g., connection terminal 178
  • an antenna module e.g., antenna module 197.
  • the electronic device may display an external power connection request message at operation 421 if no external power is detected.
  • a processor e.g., processor 120
  • the electronic device may control to display a message on the display device (e.g., display device 160) indicating that an external power connection is needed for battery calibration. 5B, a message requesting re-execution of the battery calibration function is displayed on the display device (e.g., the display device 160) after connecting the external power source to the adapter, As shown in FIG.
  • a processor e.g., processor 120 of an electronic device may output an external power connection request message via a sound output device (e.g., sound output device 155).
  • the electronic device may determine at operation 405 if the remaining battery capacity is less than or equal to the threshold capacity.
  • the processor e.g., processor 120
  • the critical capacity can be set in advance at the time of designing the electronic device 101. [ Critical capacity can be set differently by the operator and the designer. According to one embodiment, the critical capacity may be set considering the constraints associated with performing charging of the battery (e.g., battery 189).
  • the electronic device 101 may be configured such that the remaining capacity of the battery (e.g., battery 189) is less than a certain amount (e.g., about 96%) when external power is connected to the electronic device 101, The battery 189 is charged only when the remaining capacity of the battery 189 is less than the predetermined capacity and the charging operation of the battery 189 is not performed when the remaining capacity of the battery 189 exceeds the specified capacity.
  • the critical capacity for battery calibration may be set to a value that is less than or equal to a certain capacity (e.g., a value of about 96% or less). For example, if the specific capacity is 96%, the critical capacity may be set to 94%.
  • the electronic device 101 may not be constrained to perform charging of the battery (e.g., battery 189), in which case the critical capacity for battery calibration may be less than 100% Can be set.
  • the electronic device may display a message requesting discharge below the critical capacity at operation 423 if the battery remaining capacity is greater than the critical capacity.
  • a processor e.g., processor 120
  • a display device e.g., display device 160
  • the processor e.g., processor 120
  • the electronic device may re-execute the battery calibration function after discharging the battery with information indicating that battery calibration is possible when the remaining battery capacity is equal to or less than 94% (E.g., display device 160) to be displayed on the display device (e.g., display device 160).
  • a processor (e.g., processor 120) of an electronic device may output a battery discharge request message via a sound output device (e.g., sound output device 155).
  • the electronic device may compare the current charge voltage value to the initial charge voltage value at operation 407 if the battery remaining capacity is less than or equal to the threshold capacity.
  • the processor e.g., processor 120
  • the battery calibration operation can be performed, (I.e., the charging voltage value of the battery 220).
  • the electronic device may change the current charge voltage value to the reference charge voltage value at act 409 if the current charge voltage value differs from the initial charge voltage value.
  • the reference charging voltage value may be either an initial charging voltage value, a value obtained by multiplying the present charging voltage value by a predetermined multiple, or a value obtained by adding an offset value to the present charging voltage value.
  • the current charging voltage value set in the charging circuit (e.g., the charging circuit 210) is set to be lower than the initial charging voltage value based on the change in the maximum charging capacity of the battery (e.g., battery 189) Lt; / RTI >
  • the initial charge voltage value is 4.4 V / Cell
  • the current charge voltage value set in the charge circuit (e.g., charge circuit 210) is 4.3 based on the change in maximum charge capacity of the battery (e.g. battery 189) V / Cell < / RTI &gt
  • a processor e.g., processor 120 of the electronic device may change the down-converted current charging voltage value to an initial charging voltage value.
  • a processor e.g., processor 120 of an electronic device may change the charging voltage of the charging circuit from 4.3V / Cell to 4.4V / Cell.
  • the initial charge voltage value and / or the present charge voltage value are illustrated for the sake of understanding, and the present invention is not limited thereto.
  • the electronic device may skip operation 409 and perform operation 411, described below.
  • the electronic device may proceed with charging using the reference charging voltage at operation 409.
  • a processor e.g., processor 120
  • a charging circuit e.g., charging circuit 210) outputs a reference charging voltage to a battery (e.g., battery 189) Battery 189) can be controlled to be charged.
  • the processor e.g., processor 120
  • the electronic device proceeds with charging using the reference charging voltage, while a message indicating that battery calibration is in progress is displayed on the display device (e.g., display device 160) As shown in FIG.
  • the processor (e.g., processor 120) of the electronic device may be configured to cause the display device 160 to display a message requesting to maintain a connection to the external power source as the battery is being calibrated, Can be controlled.
  • the processor (e.g., processor 120) of the electronic device may output a message indicating that the battery calibration is in progress via the acoustic output device (e.g., acoustic output device 155).
  • a message indicating that the battery calibration is in progress may indicate a remaining capacity of the battery that is changed during battery calibration.
  • the electronic device may sense whether the battery is fully charged at act 413.
  • a processor e.g., processor 120
  • a battery management system of a charging circuit e.g., charging circuit 210) or a battery (e.g., battery 189) Can be detected.
  • the electronic device may return to operation 411 to continue charging the battery using the reference charging voltage.
  • the electronic device may update the maximum charge capacity and output a buffering alert message at operation 415 if the battery is fully charged.
  • a processor e. G., Processor 120
  • the electronic device senses that the battery (e. G., Battery 189) is fully charged using the reference charging voltage
  • the maximum charge capacity information of the battery can be updated based on the information.
  • a battery management system included in a battery (e.g., battery 189) of an electronic device may be based on at least one of the remaining capacity of the battery corresponding to the beginning of the battery calibration and the capacity charged in the battery during battery calibration , Calculate the maximum charge capacity corresponding to the cell state of the current battery, and provide the calculated maximum charge capacity to a processor (e.g., processor 120) of the electronic device.
  • the processor e.g., processor 120
  • the processor is configured such that the battery calibration has been completed and a re-execution of the battery calibration menu is requested after a full discharge for a more accurate calibration So that the message is displayed on the display device (e.g., display device 160).
  • the processor e.g., processor 120
  • the battery life extension mode is a mode for controlling the battery to be charged to a specific capacity (for example, 80% of the total capacity) without extending the battery to 100% in order to extend the life of the battery. Accordingly, the electronic device can perform the battery calibration operation after deactivating the battery life extension mode to measure the maximum charge capacity corresponding to the cell state of the battery.
  • the processor e.g., processor 120
  • the processor may measure the maximum charge capacity by battery calibration and then reactivate the battery life extension mode.
  • FIG. 6 shows the charge amount of the battery according to the charging voltage of the charging circuit.
  • the battery charging capacity for each of the reference charging voltage of 4.4 V / cell and the charging voltage of 4.3 V / cell down-converted based on the maximum charging capacity of the battery is shown.
  • capacities charged in the same battery cell are 4071 mAh and 3985 mAh, respectively, when the charging voltage is 4.4 V / cell (601) and when the charging voltage is 4.3 V / cell (603) .
  • the charging voltage is 4.4 V / Cell (601) and the charging voltage is 4.3 V / Cell (603)
  • the capacity charged in the battery cell is larger than the capacity charged in the battery cell have.
  • the electronic device can be configured to use a reference charging voltage (e.g., an initial charging voltage value, A value obtained by multiplying the down-converted charge voltage value by a certain multiple or a value obtained by adding an offset value to the down-converted charge voltage value) to update the maximum charge capacity of the battery to an accurate value corresponding to the current battery cell state .
  • a reference charging voltage e.g., an initial charging voltage value, A value obtained by multiplying the down-converted charge voltage value by a certain multiple or a value obtained by adding an offset value to the down-converted charge voltage value
  • a method of operating an electronic device includes sensing an event occurrence to calibrate a maximum charge capacity of a battery included in the electronic device, comparing the charge voltage of the charge circuit for charging the battery to a first value And charging the battery using a charging circuit in which the charging voltage is changed to the second value.
  • the second value may be one of an initial charge voltage value of the charging circuit, a value obtained by multiplying the first value by a certain multiple, or a value obtained by adding the offset value to the first value have.
  • the first value may be a charge voltage value set to a value less than the initial charge voltage value based on a maximum charge capacity of the battery.
  • the maximum charge capacity of the battery may be reduced based on at least one of an ambient temperature of the electronic device, and a number of charge / discharge cycles of the battery.
  • an operation of detecting that the battery is fully charged using the charging voltage changed to the second value and an operation of updating the maximum charging capacity of the battery based on the fully charged capacity of the battery .
  • the maximum charge capacity of the battery may be determined based on the capacity charged by the charge voltage changed to the second value, and the capacity of the battery Of the remaining capacity of the storage medium.
  • a method of operating an electronic device comprising the steps of sensing that calibration is required for a maximum charge capacity of the battery based on at least one of a change in ambient temperature of the electronic device and a change in a maximum charge capacity of the battery, And displaying a message indicating that calibration for the maximum charge capacity is required.
  • the operation of changing the charging voltage of the charging circuit from a first value to a second value may include, in response to the occurrence of an event for calibrating the maximum charging capacity of the battery, An operation of determining whether or not the reference condition is satisfied and an operation of changing the charging voltage of the charging circuit from the first value to the second value in response to the fact that the remaining capacity of the battery satisfies the reference condition .
  • the method may further include displaying a message requesting discharge of the battery in response to the remaining capacity of the battery not meeting the reference condition.
  • a computer-readable recording medium includes an operation of detecting an occurrence of an event for calibrating a maximum charging capacity of a battery included in an electronic device, an operation of charging a charging voltage of the charging circuit for charging the battery from a first value And a program for executing an operation of charging the battery using the charging circuit in which the charging voltage is changed to the second value.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Divers modes de réalisation de la présente invention concernent un dispositif électronique d'étalonnage de batterie et un procédé de fonctionnement associé. Le dispositif électronique comprend une batterie, un circuit de charge et un processeur, le processeur pouvant être configuré pour détecter une survenue d'événement de façon à étalonner une capacité de charge maximale de la batterie, modifier une tension de charge du circuit de charge d'une première valeur à une seconde valeur, et commander le circuit de charge de façon à charger la batterie en utilisant la tension de charge qui a été changée à la seconde valeur.
PCT/KR2018/015099 2017-12-04 2018-11-30 Dispositif électronique d'étalonnage de batterie et procédé de fonctionnement associé WO2019112257A1 (fr)

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KR1020170165252A KR20190065758A (ko) 2017-12-04 2017-12-04 배터리 교정을 위한 전자 장치 및 그 동작 방법

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KR102688106B1 (ko) * 2019-07-31 2024-07-25 삼성전자주식회사 무선 전송 전력을 제어하는 방법 및 이를 구현한 전자 장치
KR20210049338A (ko) 2019-10-25 2021-05-06 주식회사 엘지화학 배터리의 soc를 추정하기 위한 장치, 그것을 포함하는 전기 차량 및 그 방법

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