WO2021025450A1 - Procédé pour mesurer l'état d'une batterie et dispositif électronique prenant en charge ce procédé - Google Patents

Procédé pour mesurer l'état d'une batterie et dispositif électronique prenant en charge ce procédé Download PDF

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Publication number
WO2021025450A1
WO2021025450A1 PCT/KR2020/010310 KR2020010310W WO2021025450A1 WO 2021025450 A1 WO2021025450 A1 WO 2021025450A1 KR 2020010310 W KR2020010310 W KR 2020010310W WO 2021025450 A1 WO2021025450 A1 WO 2021025450A1
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WIPO (PCT)
Prior art keywords
battery
electronic device
state
current
voltage
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PCT/KR2020/010310
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English (en)
Korean (ko)
Inventor
안성진
박지용
오부근
이재연
Original Assignee
삼성전자 주식회사
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Publication of WO2021025450A1 publication Critical patent/WO2021025450A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
    • 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]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/3644—Constructional arrangements
    • G01R31/3648—Constructional arrangements comprising digital calculation means, e.g. for performing an algorithm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/389—Measuring internal impedance, internal conductance or related variables
    • 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
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits

Definitions

  • Various embodiments of the present document relate to a method of measuring a state of a battery and an electronic device supporting the same.
  • the number of battery charge/discharge cycles was counted using an absolute state of charge (ASOC), and the state of health (SOH) of the battery was estimated based on the counted number of cycles.
  • ASOC absolute state of charge
  • SOH state of health
  • an impedance measurement device including a separate power supply unit for applying power to the battery and a measurement device is used, and impedance is calculated by observing the reaction (voltage and current) of the battery.
  • this method of measuring the state of the battery requires a separate impedance measuring device, and has a disadvantage in that it is not possible to measure the state of the battery only with an electronic device including the battery to be measured.
  • An electronic device includes a battery, a current consuming device, and a processor connected to the battery and the current consuming device, wherein the processor applies power of the battery to the current consuming device And controlling the current consuming device to consume a periodic current having a specific frequency, measuring a phase difference between the voltage graph of the battery and the voltage graph of the current consuming device, and measuring the voltage of the battery, the current of the battery, and the The state of the battery is determined based on the phase difference.
  • a method for determining a state of a battery by an electronic device includes the process of applying power from a battery included in the electronic device to a current consuming device included in the electronic device.
  • a process of controlling a current consuming device to consume a periodic current having a specific frequency includes the process of measuring a phase difference between the voltage of the battery and the voltage of the current consuming device, and measuring the voltage of the battery, the current of the battery, and the phase difference. It includes the process of determining the state of the battery on the basis.
  • the electronic device when there is a change in the state of the electronic device, such as when a shock is applied to the electronic device such as a crash on the floor, the electronic device is connected to the change in the state of the electronic device, and the battery is rapidly It is possible to measure the state of, and accordingly, a method and apparatus capable of preventing a risk such as damage or explosion of a battery can be provided.
  • FIG. 1 is a block diagram 100 of an electronic device in a network environment, according to example embodiments.
  • FIG. 2 is a block diagram 200 of a power management module and a battery according to one embodiment.
  • FIG. 3 is a block diagram 300 of an audio module, according to an embodiment.
  • FIG. 4 is a flowchart 400 illustrating a method of measuring a state of a battery of an electronic device according to an exemplary embodiment.
  • FIG. 5 is a block diagram 500 illustrating an operation of an electronic device according to an exemplary embodiment.
  • FIG. 6 is a graph 600 showing a voltage measurement result of an electronic device according to an exemplary embodiment.
  • FIG. 7 is a graph 700 showing reference data stored in an electronic device according to an exemplary embodiment.
  • FIGS. 8A, 8B, and 8C are diagrams illustrating a process of measuring an impedance of a battery of an electronic device according to an exemplary embodiment, as graphs 810, 820, 830, 840, and 850.
  • 1 is a block diagram 100 of an electronic device in a network environment, according to example embodiments.
  • 2 is a block diagram 200 of a power management module and a battery according to one embodiment.
  • 3 is a block diagram 300 of an audio module, according to an embodiment.
  • FIG. 1 is a block diagram of an electronic device 101 in a network environment 100 according to exemplary embodiments.
  • the electronic device 101 communicates with the electronic device 102 through a first network 198 (for example, a short-range wireless communication network), or a second network 199 It is possible to communicate with the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network).
  • the electronic device 101 may communicate 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, and a sensor module ( 176, interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197 ) Can be included.
  • a sensor module 176, interface 177, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196, or antenna module 197
  • at least one of these components may be omitted or one or more other components may be added to the electronic device 101.
  • some of these components may be implemented as one integrated circuit.
  • the sensor module 176 eg, a fingerprint sensor, an iris sensor, or an illuminance sensor
  • the display device 160 eg, a display.
  • the processor 120 for example, executes software (eg, a program 140) to implement at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120. It can be controlled and can perform various data processing or operations. According to an embodiment, as at least part of data processing or operation, the processor 120 may store commands or data received from other components (eg, the sensor module 176 or the communication module 190) to the volatile memory 132. The command or data stored in the volatile memory 132 may be processed, and result data may be stored in the nonvolatile memory 134.
  • software eg, a program 140
  • the processor 120 may store commands or data received from other components (eg, the sensor module 176 or the communication module 190) to the volatile memory 132.
  • the command or data stored in the volatile memory 132 may be processed, and result data may be stored in the nonvolatile memory 134.
  • the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and a secondary processor 123 (eg, a graphic processing unit, an image signal processor) that can be operated independently or together , A sensor hub processor, or a communication processor). Additionally or alternatively, the coprocessor 123 may be set to use lower power than the main processor 121 or to be specialized for a designated function. The secondary processor 123 may be implemented separately from the main processor 121 or as a part thereof.
  • the coprocessor 123 is, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, an application is executed). ), together with the main processor 121, at least one of the components of the electronic device 101 (for example, the display device 160, the sensor module 176, the audio module 170, or At least some of functions or states related to the communication module 190 may be controlled.
  • the coprocessor 123 eg, an image signal processor or a communication processor
  • may be implemented as part of another functionally related component eg, the camera module 180 or the communication module 190). have.
  • the memory 130 may store various data used by at least one component of the electronic device 101 (eg, the processor 120 or the sensor module 176).
  • the data may include, for example, software (eg, the program 140) and input data or output data for commands related thereto.
  • the memory 130 may include a volatile memory 132 or a nonvolatile memory 134.
  • the program 140 may be stored as software in the memory 130, and may include, for example, an operating system 142, middleware 144, or an application 146.
  • the input device 150 may receive a command or data to be used for a component of the electronic device 101 (eg, the processor 120) from an outside (eg, a user) of the electronic device 101.
  • the input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).
  • the sound output device 155 may output an sound signal to the outside of the electronic device 101.
  • the sound output device 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.
  • the display device 160 may visually provide information to the outside of the electronic device 101 (eg, a user).
  • the display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device.
  • the display device 160 may include a touch circuitry set to sense a touch, or a sensor circuit (eg, a pressure sensor) set to measure the strength of a force generated by the touch. have.
  • the audio module 170 may convert sound into an electric signal or, conversely, convert an electric signal into sound. According to an embodiment, the audio module 170 acquires sound through the input device 150, the sound output device 155, or an external electronic device (for example, an external electronic device directly or wirelessly connected to the electronic device 101). Sound may be output through the electronic device 102 (for example, a speaker or headphones).
  • the audio module 170 may be controlled by a processor.
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101, or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more designated protocols that may be used for the electronic device 101 to directly or wirelessly connect with an external electronic device (eg, the electronic device 102 ).
  • the interface 177 may include, for example, 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 Card
  • the connection terminal 178 may include a connector through which the electronic device 101 can be physically connected to an external electronic device (eg, the electronic device 102 ).
  • the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 179 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that a user can perceive through a tactile or motor sense.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture a still image and a video.
  • the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101.
  • the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101.
  • the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, electronic device 102, electronic device 104, or server 108). It is possible to support establishment and communication through the established communication channel.
  • the communication module 190 operates independently of the processor 120 (eg, an application processor), and may include one or more communication processors that support direct (eg, wired) communication or wireless communication.
  • the communication module 190 is a wireless communication module 192 (eg, 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 (eg : A LAN (local area network) communication module, or a power line communication module) may be included.
  • a wireless communication module 192 eg, 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 eg : A LAN (local area network) communication module, or a power line communication module
  • a corresponding communication module is a first network 198 (for example, a short-range communication network such as Bluetooth, WiFi direct or IrDA (infrared data association)) or a second network 199 (for example, a cellular network, the Internet, or It may communicate with the external electronic device 104 through a computer network (for example, a telecommunication network such as a LAN or WAN).
  • a computer network for example, a telecommunication network such as a LAN or WAN.
  • These various types of communication modules may be integrated into one component (eg, a single chip), or may be implemented as a plurality of separate components (eg, multiple chips).
  • the wireless communication module 192 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 in a communication network such as the first network 198 or the second network 199.
  • subscriber information e.g., International Mobile Subscriber Identifier (IMSI)
  • IMSI International Mobile Subscriber Identifier
  • the antenna module 197 may transmit a signal or power to the outside (eg, an external electronic device) or receive from the outside.
  • the antenna module 197 may include one antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • the antenna module 197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is, for example, provided by the communication module 190 from the plurality of antennas. Can be chosen.
  • the signal or power may be transmitted or received between the communication module 190 and an external electronic device through the at least one selected antenna.
  • other components eg, RFIC
  • other than the radiator may be additionally formed as part of the antenna module 197.
  • At least some of the components are connected to each other through a communication method (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI))) between peripheral devices and signal (E.g. commands or data) can be exchanged with each other.
  • a communication method e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199.
  • Each of the external electronic devices 102 and 104 may be a device of the same or different type as the electronic device 101.
  • all or part of the operations executed by the electronic device 101 may be executed by one or more of the external electronic devices 102, 104, or 108.
  • the electronic device 101 needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device 101 does not execute the function or service by itself.
  • One or more external electronic devices receiving the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit the execution result to the electronic device 101.
  • the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing, distributed computing, or client-server computing technology may be used.
  • Electronic devices may be devices of various types.
  • Electronic devices include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, home appliances, automobiles, mobile devices including electric motors, or other batteries. It may include an electronic device to include.
  • the electronic device according to the embodiment of the present document is not limited to the above-described devices.
  • phrases such as “at least one of, B, or C” may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof.
  • Terms such as “first”, “second”, or “first” or “second” may be used simply to distinguish the component from other corresponding components, and the components may be referred to in other aspects (eg, importance or Order) is not limited.
  • Some (eg, a first) component is referred to as “coupled” or “connected” with or without the terms “functionally” or “communicatively” to another (eg, second) component. When mentioned, it means that any of the above components can be connected to the other components directly (eg by wire), wirelessly, or via a third component.
  • module used in this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic blocks, parts, or circuits.
  • the module may be an integrally configured component or a minimum unit of the component or a part thereof that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • Various embodiments of the present document include one or more instructions stored in a storage medium (eg, internal memory 136 or external memory 138) readable by a machine (eg, electronic device 101). It may be implemented as software (for example, the program 140) including them.
  • the processor eg, the processor 120 of the device (eg, the electronic device 101) may call and execute at least one command among one or more commands stored from a storage medium. This makes it possible for the device to be operated to perform at least one function according to the at least one command invoked.
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • non-transient only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term refers to the case where data is semi-permanently stored in the storage medium. It does not distinguish between temporary storage cases.
  • a signal e.g., electromagnetic waves
  • a method according to various embodiments disclosed in the present document may be provided by being included in a computer program product.
  • Computer program products can be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play StoreTM) or two user devices ( It can be distributed (e.g., downloaded or uploaded) directly between, e.g. smartphones).
  • a device eg compact disc read only memory (CD-ROM)
  • an application store eg Play StoreTM
  • two user devices It can be distributed (e.g., downloaded or uploaded) directly between, e.g. smartphones).
  • at least a portion of the computer program product may be temporarily stored or temporarily generated in a storage medium that can be read by a device such as a server of a manufacturer, a server of an application store, or a memory of a relay server.
  • each component (eg, module or program) of the above-described components may include a singular number or a plurality of entities.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components in the same or similar to that performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are sequentially, parallel, repeatedly, or heuristically executed, or one or more of the above operations are executed in a different order or omitted. Or one or more other actions may be added.
  • the power management module 188 may include a charging circuit 210, a power regulator 220, or a power gauge 230.
  • the charging circuit 210 may charge the battery 189 by using power supplied from an external power source for the electronic device 101.
  • the charging circuit 210 includes the type of external power (eg, power adapter, USB or wireless charging), the amount of power that can be supplied from the external power source (eg, about 20 watts or more), or the battery 189
  • a charging method eg, normal charging or rapid charging
  • the external power source may be wired to the electronic device 101, for example, through the connection terminal 178, or may be wirelessly connected through the antenna module 197.
  • the power regulator 220 may generate a plurality of powers having different voltages or different current levels, for example, by adjusting the voltage level or 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 source or the battery 189 to a voltage or current level suitable for each of some of the components included in the electronic device 101.
  • the power regulator 220 may be implemented in the form of a low drop out (LDO) regulator or a switching regulator.
  • LDO low drop out
  • the power gauge 230 may measure usage state information about the battery 189 (eg, at least one of current, capacity, number of charge/discharge, voltage, and temperature of the battery 189 ).
  • the power management module 188 for example, using the charging circuit 210, the voltage regulator 220, or the power gauge 230, based at least in part on the measured usage state information of the battery 189
  • Charge state information related to charging eg, life, overvoltage, undervoltage, overcurrent, overcharge, over discharge, overheat, short circuit, or swelling
  • the power management module 188 may determine whether the battery 189 is normal or abnormal based at least in part on the determined charge state information. When it is determined that the state of the battery 189 is abnormal, the power management module 188 may adjust the charging of the battery 189 (eg, decrease charging current or voltage, or stop charging). According to an embodiment, at least some of the functions of the power management module 188 may be performed by the processor 120 of FIG. 1.
  • the battery 189 may include a battery protection circuit module (PCM) 240 according to an embodiment.
  • the battery protection circuit 240 may perform one or more of various functions (eg, a pre-blocking function) for preventing performance degradation or burnout of the battery 189.
  • the battery protection circuit 240 may additionally or alternatively be a battery management system capable of performing various functions including cell balancing, battery capacity measurement, charging/discharging frequency measurement, temperature measurement, or voltage measurement. BMS)).
  • At least a part of the use state information or the charge state information of the battery 189 is a sensor (eg, a temperature sensor, an acceleration sensor, or a gyro sensor) among the sensor modules 276. sensor), the power gauge 230, or the power management module 188.
  • the corresponding sensor for example, a temperature sensor among the sensor modules 176 is included as part of the battery protection circuit 240, or as a separate device to be disposed near the battery 189. I can.
  • the audio module 170 includes, for example, an audio input interface 310, an audio input mixer 320, an analog to digital converter (ADC) 330, an audio signal processor 340, and a DAC.
  • a (digital to analog converter) 350, an audio output mixer 360, or an audio output interface 370 may be included.
  • the audio input interface 310 is obtained from the outside of the electronic device 101 as part of the input device 150 or through a microphone configured separately from the electronic device 101 (eg, a dynamic microphone, a condenser microphone, or a piezo microphone). An audio signal corresponding to sound can be received. For example, when an audio signal is acquired from an external electronic device 102 (for example, a headset or a microphone), the audio input interface 310 is directly connected to the external electronic device 102 through the connection terminal 178. Or, it is connected wirelessly (eg, Bluetooth communication) through the wireless communication module 192 to receive an audio signal.
  • a microphone configured separately from the electronic device 101
  • An audio signal corresponding to sound can be received.
  • an audio signal is acquired from an external electronic device 102 (for example, a headset or a microphone)
  • the audio input interface 310 is directly connected to the external electronic device 102 through the connection terminal 178. Or, it is connected wirelessly (eg, Bluetooth communication) through the wireless communication module 192 to receive an audio signal.
  • the audio input interface 310 may receive a control signal (eg, a volume adjustment signal received through an input button) related to an audio signal obtained from the external electronic device 102.
  • the audio input interface 310 may include a plurality of audio input channels, and may receive different audio signals for each corresponding audio input channel among the plurality of audio input channels.
  • the audio input interface 310 may receive an audio signal from another component of the electronic device 101 (eg, the processor 120 or the memory 130 ).
  • the audio input mixer 320 may synthesize a plurality of input audio signals into at least one audio signal.
  • the audio input mixer 320 may synthesize a plurality of analog audio signals input through the audio input interface 310 into at least one analog audio signal.
  • the ADC 330 may convert an analog audio signal into a digital audio signal.
  • the ADC 330 converts the analog audio signal received through the audio input interface 310, or additionally or alternatively, the analog audio signal synthesized through the audio input mixer 320 to digital audio. Can be converted to a signal.
  • the audio signal processor 340 may perform various processing on a digital audio signal received through the ADC 330 or a digital audio signal received from another component of the electronic device 101. For example, according to an embodiment, the audio signal processor 340 changes the sampling rate for one or more digital audio signals, applies one or more filters, performs interpolation processing, amplifies or attenuates all or part of the frequency band, Noise processing (eg, noise or echo attenuation), channel change (eg, switching between mono and stereo), mixing, or specified signal extraction can be performed. According to an embodiment, one or more functions of the audio signal processor 340 may be implemented in the form of an equalizer.
  • the DAC 350 may convert a digital audio signal into an analog audio signal.
  • the DAC 350 is a digital audio signal processed by the audio signal processor 340 or other components of the electronic device 101 (for example, the processor 120 or the memory 130 )) can be converted into an analog audio signal.
  • the audio output mixer 360 may synthesize a plurality of audio signals to be output into at least one audio signal.
  • the audio output mixer 360 includes an audio signal converted to analog through the DAC 350 and another analog audio signal (for example, an analog audio signal received through the audio input interface 310). ) Can be synthesized into at least one analog audio signal.
  • the audio output interface 370 transmits an analog audio signal converted through the DAC 350 or an analog audio signal additionally or alternatively synthesized by the audio output mixer 360 through the audio output device 155 of FIG. 1. It can be output to the outside of the device 101.
  • the sound output device 155 may include, for example, a speaker such as a dynamic driver or a balanced armature driver, or a receiver.
  • the sound output device 155 may include a plurality of speakers.
  • the audio output interface 370 may output an audio signal having a plurality of different channels (eg, stereo or 5.1 channels) through at least some of the plurality of speakers.
  • the audio output interface 370 is directly connected to an external electronic device 102 (eg, an external speaker or headset) through a connection terminal 178 or wirelessly through a wireless communication module 192 And output an audio signal.
  • the audio module 170 does not separately include the audio input mixer 320 or the audio output mixer 360, and uses at least one function of the audio signal processor 340 to provide a plurality of digital audio signals. By synthesizing them to generate at least one digital audio signal.
  • the audio module 170 is an audio amplifier (not shown) capable of amplifying an analog audio signal input through the audio input interface 310 or an audio signal to be output through the audio output interface 370 (Eg, speaker amplification circuit) may be included.
  • the audio amplifier may be configured as a separate module from the audio module 170.
  • FIGS. 4 to 7 a method of determining a state of a battery of an electronic device according to an exemplary embodiment will be described in detail with reference to FIGS. 4 to 7.
  • the same components as those in the above-described embodiment are referred to by the same reference numerals, and descriptions of the same components are omitted.
  • FIG. 4 is a flowchart 400 illustrating a method of measuring a state of a battery of an electronic device according to an exemplary embodiment.
  • 5 is a block diagram 500 illustrating an operation of an electronic device according to an exemplary embodiment.
  • 6 is a graph 600 showing a voltage measurement result of an electronic device according to an exemplary embodiment.
  • 7 is a graph 700 showing reference data stored in an electronic device according to an exemplary embodiment.
  • the operation of the electronic device according to an exemplary embodiment described with reference to FIGS. 4 to 7 may be performed by the electronic device 101 of FIG. 1 or the processor 120 of the electronic device 101. At least some of the power management module 188 and the audio module 170 of FIG. 5 may be included in the processor 120 of FIG. 1.
  • the electronic device 101 before measuring the state of the battery 189 of the electronic device 101, the electronic device 101 according to an exemplary embodiment minimizes voltage and current noise and improves measurement accuracy.
  • other processors running in the electronic device 101 may be arranged (401).
  • the electronic device 101 may convert a processor for a constantly driven configuration such as a communication module, an RF module, and/or a touch screen into a deactivated (eg, sleep mode) state. Deactivating the continuously driven configuration (eg, a sleep mode) may mean operating with a minimum driving power.
  • the electronic device 101 may perform the process of measuring the state of the battery of FIG. 4 periodically and/or when an event is detected in the electronic device 101 by the sensor module 176 of FIG. 1.
  • the event may be at least one of a case where an impact is detected on the electronic device 101, a temperature of the electronic device 101 rises above a certain temperature, and a case where a voltage greater than a certain level of the electronic device 101 is sensed. .
  • the electronic device 101 may change the setting of the power gauge included in the power management module 188 (403).
  • the power management module 188 may include a power gauge 230.
  • the power gauge 230 may measure voltage and current of the battery 189 and the sound output device 155 (eg, a speaker, hereinafter referred to as a speaker for convenience).
  • the electronic device 101 may increase the number of times the power gauge 230 measures the voltage and/or current of the battery 189 and the speaker 155 per hour.
  • the electronic device 101 may change the setting so that the power gauge 230 measures and records the voltages of the battery 189 and the speaker 155 10 times per second. For more precise calculations, the number of measurements per hour can be increased.
  • the electronic device 101 may determine a specific specific frequency (hereinafter, referred to as a target frequency) as one frequency within a frequency range in which the speaker 155 can be driven.
  • the target frequency may mean a frequency to be used in measuring the state of the battery.
  • the processor of the electronic device 101 eg, the processor 120 of FIG. 1
  • the power management module 188 of the electronic device 101 may directly apply a periodic signal to the audio module 170.
  • the frequency range in which the speaker 155 can be driven may be 10 kHz to 0.1 Hz.
  • the audio module 170 may apply a current in the form of a sine wave having a first frequency to the speaker 155 based on the received periodic signal. Since the battery 189 is a DC power source, the direction of the current applied to the speaker 155 does not change periodically, and the DC current flowing in one direction repeats increasing and decreasing in the form of a sine wave having a first frequency, and the speaker 155 Can be applied to.
  • the battery 189 may transmit current as required by the speaker 155.
  • the power regulator 220 of FIG. 2 included in the power management module 188 may control the battery 189 to transmit as much current as required by the speaker 155.
  • the voltage of the battery 189 may appear in the form of a sine wave repeating decrease and increase with the same first frequency.
  • the electronic device 101 may measure the current Ibatt and the voltage Evet of the battery 189, the voltage Espk of the speaker 155, and the phase difference ⁇ (404 ). Alternatively, the electronic device 101 may not directly measure the current Ibatt of the battery 189, but may use a unique value of the battery previously measured and stored in the memory of the electronic device 101.
  • the graph 600 of FIG. 6 may be a graph showing measurement results of the voltage (Ebatt) of the battery 189 and the voltage (Espk) of the speaker 155 with a period of the x-axis and a voltage (V) of the y-axis. Both the voltage Ebatt of the battery 189 and the voltage Espk of the speaker 155 may increase and decrease repeatedly in the form of a sine wave having a first frequency.
  • a phase difference ⁇ may occur between the voltage Ebatt of the battery 189 and the voltage Espk of the speaker 155.
  • the phase difference ( ⁇ ) is the crest of the sine wave graph showing the result of measuring the voltage (Ebatt) of the battery 189, and the crest of the sine wave graph showing the result of measuring the voltage (Espk) of the speaker 155. It can be the difference between.
  • the electronic device 101 may measure a phase difference ( ⁇ ) between the voltage (Ebatt) of the battery 189 and the voltage (Espk) of the speaker 155.
  • the electronic device 101 does not directly measure the phase difference ( ⁇ ) between the voltage (Ebatt) of the battery 189 and the voltage (Espk) of the speaker 155, but is measured and stored in the memory of the electronic device 101. It is also possible to use a phase difference ( ⁇ ) value.
  • the electronic device 101 may restore the setting of the power gauge (405 ).
  • the power management module 188 may include a power gauge 230.
  • the electronic device 101 may restore the number of times of measuring the voltage and/or current per hour of the power gauge 230, which has been increased for measuring the state of the battery, to its original state in order to reduce the burden on the electronic device 101.
  • the electronic device 101 may restore another processor arranged before measuring the state of the battery in order to improve measurement accuracy.
  • the electronic device 101 may drive (activate) a communication module, an RF (including an antenna) module, and/or a touch screen that has deactivated or terminated a process for a constantly driven component.
  • the electronic device 101 may calculate the impedance of the battery and determine the state of the battery (406 ).
  • the calculation of the impedance of the battery and the determination of the state of the battery 406 are shown to be performed after restoring the setting of the power gauge 405.
  • the impedance Z(w) of the battery 189 can be calculated through the following [Equation 1].
  • the electronic device 101 may estimate the state 189 of the battery based on the calculated impedance Z(w) of the battery 189.
  • the electronic device 101 may estimate the state of the battery 189 by comparing the calculated impedance Z(w) of the battery 189 with reference data stored in the memory.
  • the reference data may be data stored in a memory of the electronic device 101 by measuring a unique value of a battery for measurement of the same type as the battery 189 in advance.
  • the reference data may include a result of measuring the impedance value of a single battery for measurement at a target frequency.
  • the impedance value of the reference data may be measured using a separate impedance measuring device.
  • a separate impedance measuring device may be a device that applies or discharges an AC signal to the battery for measurement, measures the voltage and current of the battery for measurement, which is a response thereto, and calculates an impedance value based thereon.
  • the reference data may include a result of measuring the impedance (Zre+Zim), Zre and/or Zim of the battery for initial measurement using an impedance device at a target frequency.
  • the reference data may include a result of measuring the impedance (Zre+Zim), Zre and/or Zim of each battery unit for measurement by cycle by using an impedance device at a target frequency. In this case, once the battery is fully charged and then completely discharged, it may be referred to as one cycle.
  • the reference data may include the result of measuring the impedance (Zre + Zim) of the battery unit for measurement using an impedance device at the target frequency, Zre and/or Zim from 400 to 800 cycles at intervals of 50 to 100 cycles. I can.
  • the reference data is a result of measuring the impedance (Zre+Zim), Zre, and/or Zim of a single battery unit for measurement using the separate impedance device, and a speaker built in the electronic device 101 ( 155), the impedance of the battery for measurement (Zre+Zim), Zre, and/or Zim of the measurement battery using the same speaker may be compared with a result of measuring the corrected result.
  • the graph 700 of FIG. 7 shows an example of reference data stored in the memory of the electronic device 101.
  • the graph 700 of FIG. 7 is a result of measuring Zre of the impedance of a single measurement battery by applying a signal of a target frequency to a measurement battery using an Electrochemical Impedance Spectroscopy (EIS) analyzer.
  • the target frequency may be the same as the first frequency.
  • the x-axis represents the voltage (V), and the y-axis represents the resistance (Ohms).
  • the first graph 701 may be a result of measuring Zre of the measurement battery when the measurement battery is in an initial state, that is, in the first cycle of the measurement battery.
  • the second graph 702 may be a result of measuring Zre of the measurement battery in the 100th cycle of the measurement battery.
  • the third graph 703 may be a result of measuring Zre of the measurement battery in the 250th cycle of the measurement battery. Looking at the graph 700 of FIG. 7, it can be seen that as the cycle of the battery increases, the resistance of the battery increases. (At this time, the resistance value may be different depending on the voltage of the battery or the state of charge (SOC).)
  • the result of measuring the Zre of the impedance of the battery for measurement for one target frequency for each cycle is taken as an example of the reference data, but the reference data is the cycle of the battery for measurement for a plurality of target frequencies while changing the target frequency.
  • a result of measuring star impedance (Zre+Zim), Zre and/or Zim may be included.
  • the electronic device 101 calculates the impedance Z(w) of the battery 189 measured using the speaker 155 when the target frequency is the first frequency f1.
  • the state of the battery 189 may be determined by comparing the reference data (405).
  • the electronic device 101 may identify the current cycle of the battery 189 through the power management module 188.
  • the electronic device 101 may identify an expected resistance for a current cycle of the battery 189 based on the reference data.
  • the electronic device 101 may determine that the state of the battery 189 is abnormal.
  • the electronic device 101 may identify the expected resistance of the initial state of the battery 189 based on the reference data, and the measured impedance (Z(w)) of the battery 189 is less than the expected resistance of the initial state. If it decreases by more than the reference value, it may be determined that there is an abnormality in the state of the battery 189.
  • the initial impedance value may be 0.020 to 0.0660 Ohm, and 0.005 to 0.0010 Ohm may increase every 100 cycles of the battery. 101), the value of the impedance (Z(w)) of the battery 189 increases more than two times from the initial level resistance compared to the expected resistance increase (0.005 to 0.0010 Ohm) after 100 cycles, or less than half of the initial level resistance. If it is reduced to, the electronic device 101 may determine that the battery 189 has an abnormality.
  • the electronic device 101 may notify the user that there is an abnormality in the battery.
  • the electronic device 101 may block charging and/or discharging of the battery 189.
  • a method of measuring the state of a battery of an electronic device is not limited to the flowchart 400 of FIG. 4, and the sequence of the flowchart 400 may be partially omitted or changed.
  • FIGS. 8A, 8B, and 8C are diagrams illustrating a process of measuring an impedance of a battery of an electronic device according to an exemplary embodiment, as graphs 810, 820, 830, 840, and 850.
  • the first graph 810 of FIG. 8A is a graph showing the difference (E0) between the maximum and minimum voltage values measured by the battery when a plurality of target frequencies are applied to the speaker in the electronic device. have. That is, the first graph 810 of FIG. 8A shows the difference between the maximum value and the minimum value of the voltage measured by the battery when a signal having a first target frequency of 1500 Hz is applied to a speaker in an electronic device, and a signal having a second target frequency of 1200 Hz.
  • It may be a graph showing the difference between the maximum value and the minimum value of the voltage measured by the battery when is applied, and the difference between the maximum value and the minimum value of the voltage measured by the battery when a signal of 1000 Hz, which is a third target frequency, is applied.
  • the second graph 820 of FIG. 8A is a graph showing the difference (I0) between the maximum value and the minimum value of the current measured by the battery when a plurality of target frequencies are applied to the speaker in the electronic device. have. That is, the second graph 820 of FIG. 8A shows the difference between the maximum value and the minimum value of the current measured by the battery when a signal of 1500 Hz, which is a first target frequency, is applied to a speaker in the electronic device, and a signal of 1200 Hz, which is a second target frequency.
  • It may be a graph showing the difference between the maximum value and the minimum value of the current measured by the battery when is applied, and the difference between the maximum value and the minimum value of the current measured by the battery when a signal of 1000 Hz, which is a third target frequency, is applied.
  • the third graph 830 of FIG. 8A is a graph showing the phase difference ( ⁇ ) between the voltage measured by the battery and the voltage measured by the speaker when a plurality of target frequencies are applied to the speaker in the electronic device.
  • the third graph 830 of FIG. 8A shows the phase difference between the battery voltage and the speaker voltage when a signal of the first target frequency of 1500 Hz is applied to the speaker in the electronic device, and the battery voltage when the signal of the second target frequency of 1200 Hz is applied.
  • It may be a graph showing a phase difference between a battery voltage and a speaker voltage when a signal of 1000 Hz, which is a third target frequency, is applied, and a phase difference between the speaker voltage and the speaker voltage.
  • the first graph 840 of FIG. 8B is based on the first graph 810 of FIG. 8A and the second graph 820 of FIG. 8A, based on the first target frequency (1500 Hz) and the second Z0 value. It may be a graph showing the calculation result for each target frequency (1200 Hz) and the third target frequency (1000 Hz). In this case, Z0 may be E0/I0.
  • the graph 851 of FIG. 8C may be a graph represented by a Nyquist plot in which the impedance of the battery is set as Zre, and the y-axis is -Zim of the battery.
  • the graph 851 of FIG. 8C shows the impedance of the battery based on the second graph 842 and the third graph 843 of FIG. 8B as a first target frequency (1500 Hz), a second target frequency (1200 Hz), and a third target frequency ( 1000Hz).
  • the electronic device may determine the state of the battery by comparing it with reference data of the memory based on the graph 851 of FIG. 8C that measures the impedance of the battery at a plurality of target frequencies. Description of the reference material may be the same as the description described above with reference to FIG. 7.
  • the embodiments described above with reference to FIGS. 4 to 8C have been described as using a speaker of an electronic device to measure the impedance of a battery, but the present disclosure is not limited thereto, and a haptic vibrator instead of a speaker,
  • the impedance of the battery can be measured using an actuator or an electric motor such as a DC motor.
  • An electronic device quickly measures the impedance of a battery of an electronic device within a few seconds by using components in the electronic device without any additional device such as a charger or a separate impedance measuring device. This is possible.
  • the electronic device when a shock or abnormal environment is applied to the electronic device, such as a collision on the floor or the device is exposed to high temperature, it is possible to quickly measure the state of a battery without additional equipment. If there is damage to the battery, it is possible to prevent burnout that may occur when the user tries to charge again, or protect the user from the risk of explosion of the battery.
  • the electronic device can be set to a specific target frequency when measuring the impedance of a battery by using a speaker, an actuator, or an electric motor in the electronic device without an additional device such as a charger or a separate impedance measuring device.
  • it is possible to consume a sine wave type periodic current and because the amount of current consumed is relatively large compared to noise, the accuracy of impedance measurement can be improved.
  • the electronic device discharges the battery (through a speaker, etc.) unlike a charger or a separate impedance measuring device that requires a separate charge for only measuring the impedance of the battery when measuring the impedance of the battery. While it is possible to measure the impedance of the battery.
  • An electronic device includes a battery, a current consuming device, and a processor connected to the battery and the current consuming device, wherein the processor applies power of the battery to the current consuming device And controlling the current consuming device to consume a periodic current having a specific frequency, measuring a phase difference between the voltage graph of the battery and the voltage graph of the current consuming device, and measuring the voltage of the battery, the current of the battery, and the The state of the battery is determined based on the phase difference.
  • the processor may calculate the impedance of the battery based on the voltage of the battery, the current of the battery, and the phase difference, and to determine the state of the battery by comparing the calculated impedance with reference data stored in the electronic device. Can be configured.
  • the reference data may include an initial impedance value of the battery at the specific frequency.
  • the processor may be configured to determine that there is an abnormality in the state of the battery when the calculated impedance is greater than or less than a reference value than an expected impedance of the battery estimated based on the reference data.
  • the processor may control to block charging of the battery when it is determined that the state of the battery is abnormal as a result of determining the state of the battery.
  • the processor may be configured to provide a notification about the state of the battery to a user when it is determined that the state of the battery is abnormal as a result of determining the state of the battery.
  • the processor may be configured to select the specific frequency within a frequency range in which the current consuming device can be driven.
  • the periodic current may be a sine-wave current having the specific frequency.
  • the current consumption device may be one of a speaker, an actuator, or an electric motor, and the electronic device may further include a wireless communication antenna.
  • the processor may be configured to perform a process of determining a state of the battery when an event is detected by the electronic device, and the event is a temperature of the electronic device above a predetermined temperature when an impact is detected. When it is raised, it may include at least one of a case in which a voltage of a predetermined level or more of the electronic device is detected.
  • a method for determining a state of a battery by an electronic device includes the process of applying power from a battery included in the electronic device to a current consuming device included in the electronic device.
  • a process of controlling a current consuming device to consume a periodic current having a specific frequency includes the process of measuring a phase difference between the voltage of the battery and the voltage of the current consuming device, and measuring the voltage of the battery, the current of the battery, and the phase difference. It includes the process of determining the state of the battery on the basis.
  • the process of determining the state of the battery includes calculating an impedance of the battery based on the voltage of the battery, the current of the battery, and the phase difference, and comparing the calculated impedance with reference data stored in the electronic device to You can judge the state of.
  • the reference data may include an initial impedance value of the battery at the specific frequency.
  • the calculated impedance when the calculated impedance is greater than or less than a reference value than the expected impedance of the battery estimated based on the reference data, it may be determined that there is an abnormality in the state of the battery. .
  • the process of controlling to block charging of the battery may be further included.
  • the process of providing a notification about the state of the battery to the user may be further included.
  • the process of selecting the specific frequency within a frequency range in which the current consuming device can be driven may be further included.
  • the periodic current may be a sine-wave current having the specific frequency.
  • the current consumption device may be one of a speaker, an actuator, or an electric motor, and the electronic device may further include a wireless communication antenna.
  • the process of determining whether an impact is detected on the electronic device through an impact detection sensor included in the electronic device may be further included.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Un dispositif électronique selon un mode de réalisation décrit dans le présent document comprend : une batterie ; un dispositif de consommation de courant ; et un processeur connecté à la batterie et au dispositif de consommation de courant, dans lequel le processeur : applique la puissance de la batterie au dispositif de consommation de courant ; effectue une commande de telle façon que le dispositif de consommation de courant consomme le courant périodique ayant une fréquence spécifique ; mesure la différence de phase entre le graphe de tension de la batterie et le graphe de tension du dispositif de consommation de courant ; et détermine l'état de la batterie sur la base de la tension de la batterie, du courant de la batterie et de la différence de phase. Divers autres modes de réalisation identifiés dans la spécification sont également possibles.
PCT/KR2020/010310 2019-08-07 2020-08-05 Procédé pour mesurer l'état d'une batterie et dispositif électronique prenant en charge ce procédé WO2021025450A1 (fr)

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JP3582318B2 (ja) * 1997-08-13 2004-10-27 神鋼電機株式会社 バッテリの垂下特性をシミュレートして出力する直流電源装置の出力電圧制御方法とその方法を用いた出力電圧制御装置
JP2010025594A (ja) * 2008-07-15 2010-02-04 Mitsumi Electric Co Ltd 携帯機器、表示方法、表示プログラム
KR100998576B1 (ko) * 2008-04-01 2010-12-07 주식회사 와튼 내부 임피던스 또는 이의 유효성분 측정연산 장치 및 그방법
JP2013101065A (ja) * 2011-11-09 2013-05-23 Toyota Motor Corp 組電池の異常検出装置
KR20170048866A (ko) * 2015-10-27 2017-05-10 현대모비스 주식회사 차량용 보조 배터리 모니터링 장치 및 방법

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JP3582318B2 (ja) * 1997-08-13 2004-10-27 神鋼電機株式会社 バッテリの垂下特性をシミュレートして出力する直流電源装置の出力電圧制御方法とその方法を用いた出力電圧制御装置
KR100998576B1 (ko) * 2008-04-01 2010-12-07 주식회사 와튼 내부 임피던스 또는 이의 유효성분 측정연산 장치 및 그방법
JP2010025594A (ja) * 2008-07-15 2010-02-04 Mitsumi Electric Co Ltd 携帯機器、表示方法、表示プログラム
JP2013101065A (ja) * 2011-11-09 2013-05-23 Toyota Motor Corp 組電池の異常検出装置
KR20170048866A (ko) * 2015-10-27 2017-05-10 현대모비스 주식회사 차량용 보조 배터리 모니터링 장치 및 방법

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