KR20210031172A - Method for diagnosing status of battery, the electronic device and storage medium therefor - Google Patents

Abstract

According to various embodiments, provided is an electronic device, which includes a battery, at least one processor, and a memory. When the memory is executed, the at least one processor may store instructions for checking the remaining capacity of the battery, outputting information related to the remaining battery capacity when the checked remaining capacity of the battery is less than or equal to a threshold remaining capacity, and outputting information related to an abnormal state of the battery based on a voltage or a resistance value of the battery during charging or discharging the battery, when the confirmed residual capacity is not equal to or less than the threshold residual capacity. Other embodiments are possible.

Description

Method for diagnosing abnormal battery condition, electronic device and storage medium for this purpose {METHOD FOR DIAGNOSING STATUS OF BATTERY, THE ELECTRONIC DEVICE AND STORAGE MEDIUM THEREFOR}

Various embodiments relate to a method for diagnosing an abnormal battery condition, an electronic device and a storage medium therefor.

Recently, the use of portable electronic devices such as smart phones, tablet PCs, wearable devices, etc. is increasing, and as the use of electronic devices rapidly increases, research on high-performance batteries to increase the use time is being actively conducted. Such batteries are used in various devices such as electric vehicles (EVs) and robots as well as electronic devices such as mobile devices in a mobile environment. In particular, batteries used in energy storage systems as well as electric vehicles may be configured by connecting several battery cells to charge or discharge high-power and large-capacity power.

In the case of using a battery as an energy source as described above, the technology for controlling the battery can be very important, and as one of the control technologies, the operation efficiency of the electronic device can be improved by controlling charging and discharging of the battery using the remaining capacity of the battery. .

As described above, when the battery is controlled using the remaining capacity of the battery, it may be possible to diagnose a battery condition due to deterioration. However, when the battery cell is overcharged or overdischarged, not only the lifespan may be shortened, but also the internal temperature of the battery may increase or the electrode may be decomposed and damaged.

Therefore, in order to secure the safety of the battery, it is necessary to diagnose in advance not only the condition caused by deterioration of the battery life but also various abnormal conditions occurring inside the battery.

According to various embodiments of the present disclosure, the electronic device includes a battery, at least one processor, and a memory, and when the memory is executed, the at least one processor checks the remaining capacity of the battery, and the checked battery When the remaining capacity of is less than or equal to the threshold remaining capacity, information related to the remaining capacity of the battery is output, and when the determined remaining capacity is not less than or equal to the critical remaining capacity, the battery is charged or discharged based on the voltage or resistance value of the battery. Instructions for outputting information related to an abnormal state of the battery may be stored.

According to various embodiments, a method for diagnosing an abnormal battery condition in an electronic device includes: checking the remaining capacity of the battery, and outputting information related to the remaining battery capacity when the determined remaining capacity of the battery is less than or equal to a threshold remaining capacity. The operation and when the determined remaining capacity is not less than the threshold remaining capacity may include outputting information related to an abnormal state of the battery based on the voltage or resistance value of the battery when the battery is charged or discharged.

According to various embodiments, in a storage medium storing instructions, the instructions are set to cause the at least one processor to perform at least one operation when executed by at least one processor, and the at least one operation is , An operation of checking the remaining capacity of a battery, an operation of outputting information related to the remaining capacity of a battery when the determined remaining capacity of the battery is less than or equal to a threshold remaining capacity, and an operation of outputting information related to the remaining capacity of the battery, and when the determined remaining capacity is not less than the threshold remaining capacity, the battery During charging or discharging, outputting information related to an abnormal state of the battery based on the voltage or resistance value of the battery may be included.

According to various embodiments, not only a condition caused by deterioration of the battery life but also various abnormal conditions occurring inside the battery can be diagnosed in advance, so that the stability of the battery can be secured.

According to various embodiments, by detecting various battery states such as a swelling phenomenon due to overcharging in real time, the progress of swelling may be prevented and damage to a battery leading to battery firing may be prevented in advance.

According to various embodiments, the battery life and battery abnormal conditions corresponding to various environments are monitored in real time, and various battery abnormal conditions are displayed using a battery health index. Not only can you check it, you can also recognize it in advance.

1 is a block diagram of an electronic device in a network environment according to various embodiments of the present disclosure.
2 is a block diagram illustrating an electronic device for diagnosing an abnormal battery condition according to various embodiments of the present disclosure.
3 is a block diagram of an electronic device for providing information on a state of a battery according to various embodiments of the present disclosure.
4 is a graph showing a change in voltage over time by remaining capacity of a battery according to various embodiments of the present disclosure.
5 is a graph for comparing a resistance value during charging and a resistance value during discharging of a battery according to various embodiments of the present disclosure.
6 is a flowchart illustrating an operation of an electronic device for diagnosing an abnormal battery condition according to various embodiments of the present disclosure.
7A is a flowchart illustrating an operation for diagnosing an abnormal state of a first battery according to various embodiments of the present disclosure.
7B is a flowchart illustrating an operation for diagnosing an abnormal state of a second battery according to various embodiments of the present disclosure.
7C is a flowchart illustrating an operation for diagnosing an abnormal state of a third battery according to various embodiments of the present disclosure.
8 is a diagram illustrating an example of a screen for providing information related to a battery abnormal state according to various embodiments of the present disclosure.
9 is a diagram for describing a method for generating a battery limit characteristic function according to various embodiments of the present disclosure.
10 is a graph comparing a reference curve implemented as a function using battery limit characteristics and a curve during charge and discharge according to various embodiments.
11 is a diagram illustrating a battery health index for diagnosing an abnormal battery condition according to various embodiments of the present disclosure.
12 is a graph showing resistance values during charging and discharging for each remaining capacity of a battery according to various embodiments of the present disclosure.
13 is a diagram illustrating resistance values during charging and discharging for each remaining capacity of a battery and resistance values in the case of sudden discharge according to various embodiments of the present disclosure.
14 is a graph illustrating a relationship between a voltage change amount of a battery and a remaining capacity of a battery according to various embodiments of the present disclosure.

Terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly indicates otherwise. All terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by those of ordinary skill in the art. Terms defined in a commonly used dictionary may be interpreted as having the same or similar meaning as the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this document. . In some cases, even terms defined in this document cannot be interpreted to exclude embodiments of the present invention.

1 is a block diagram of an electronic device 101 in a network environment 100 according to various embodiments of the present disclosure. Referring to FIG. 1, in a network environment 100, 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). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108. According to an embodiment, 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. In some embodiments, at least one of these components (for example, the display device 160 or the camera module 180) may be omitted or one or more other components may be added to the electronic device 101. In some embodiments, some of these components may be implemented as a single integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in 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 a part of data processing or operation, the processor 120 may transfer commands or data received from other components (eg, the sensor module 176 or the communication module 190) to the volatile memory 132 It is loaded into, processes commands or data stored in the volatile memory 132, and the result data may be stored in the nonvolatile memory 134. According to an embodiment, the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and an auxiliary 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 co-processor 123 is, for example, in place 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, executing an application). ) While in the state, 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, or the communication module 190) It is possible to control at least some of the functions or states associated with it. According to an embodiment, the coprocessor 123 (eg, an image signal processor or a communication processor) may be implemented as a part of another functionally related component (eg, the camera module 180 or the communication module 190). have.

The memory 130 may store various types of 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 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 an embodiment, the receiver may be implemented separately from or as a part of the speaker.

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. According to an embodiment, 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 electrical signal, or conversely, may convert an electrical 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 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. According to an embodiment, the sensor module 176 is, 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 infrared (IR) 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). According to an embodiment, 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.

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). According to an embodiment, 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 tactile or motor sensations. According to an embodiment, 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. According to an embodiment, 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. According to an embodiment, the power management module 188 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 189 may supply power to at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

The communication module 190 includes a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the 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 supporting direct (eg, wired) communication or wireless communication. According to an embodiment, 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 local area network (LAN) communication module, or a power line communication module) may be included. Among these communication modules, 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 can communicate with external electronic devices through a computer network (for example, a telecommunication network such as a LAN or WAN). These various types of communication modules may be integrated into a single 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 stored in the subscriber identification module 196 (eg, International Mobile Subscriber Identifier (IMSI)) in a communication network such as the first network 198 or the second network 199. The electronic device 101 can be checked and authenticated.

The antenna module 197 may transmit a signal or power to the outside (eg, an external electronic device) or receive from the outside. According to an embodiment, the antenna module may include one antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, 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. According to some embodiments, 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., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI))) between peripheral devices and signals ( E.g. commands or data) can be exchanged with each other.

According to an embodiment, the command 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 electronic devices 102 and 104 may be a device of the same or different type as the electronic device 101. According to an embodiment, 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. For example, when 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 In addition or in addition, it is possible to request one or more external electronic devices to perform the function or at least part of the service. 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 a result of the execution 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. For this, for example, cloud computing, distributed computing, or client-server computing technology may be used.

2 is a block diagram 200 illustrating an electronic device for diagnosing an abnormal battery condition according to various embodiments of the present disclosure.

Referring to FIG. 2, the electronic device 201 may include a charge/discharge circuit 210, a processor 220, a memory 230, a sensor module 276, a power management circuit 288, and a battery 289. have.

The electronic device 201 may include a battery 289 in which battery cells are formed as one pack. Here, the battery pack may be a product including a housing for storing battery cells. The battery pack may be detachable or detachable from the electronic device according to the specifications of the electronic device, or may be stored in the electronic device integrally with the electronic device.

The battery 289 may be referred to as, for example, a battery cell, may be charged as a charging current is supplied, and may be discharged by providing the charged power to the electronic device 201. The battery 289 may serve to supply power to the main body of the electronic device or to charge power through an external charger. For example, the battery 289 may output a voltage in the range of about 3.3V to 4.3V. Accordingly, when fully charged, the battery 289 may output a voltage of about 4.3 V, and when completely discharged, the battery 289 may output a voltage of about 3.3 V.

According to various embodiments, the battery 289 may include a battery protection circuit module (PCM). The battery protection circuit may perform one or more of various functions (eg, a pre-blocking function) for preventing performance degradation or burnout of the battery 289. The battery protection circuit may additionally or alternatively be a battery management system (BMS) capable of performing various functions including cell balancing, battery capacity measurement, charging/discharging frequency measurement, temperature measurement, or voltage measurement. It can be configured as at least part of.

According to various embodiments, at least a part of the usage state information or the charge state information of the battery 189 is a corresponding sensor (eg, a current sensor, a voltage sensor, a temperature sensor) or a power management module 188 among the sensor modules 276. ) Can be measured. According to an embodiment, the corresponding sensor (for example, a current sensor, a voltage sensor, and a temperature sensor) among the sensor modules 176 is included as part of the battery protection circuit, or as a separate device near the battery 289. Can be placed on

The charging/discharging circuit 210 may include a charging unit 211 performing a charging operation on the battery 289 and a discharge unit 212 performing a discharging operation on the battery 289. The charging/discharging circuit 210 may be configured to selectively perform a charging operation and a discharging operation for the battery 289. The charging unit 211 may convert power supplied through an external charger into a form required for the battery 289 and then supply it to the battery 289. The discharging unit 212 may supply power supplied from the battery 289 to the main body of the electronic device 201, for example, components. According to an embodiment, the charge/discharge circuit 210 supplies power to the battery 289 according to a control signal output from the power management circuit 288 or the processor 220, or a voltage or current supplied from the battery 289. It may include a switching element to be adjustable.

The sensor module 276 may be configured to measure voltage and current for the battery 289, and may be configured to additionally measure the temperature of the battery 289 according to its implementation. According to an embodiment, the sensor module 276 includes a current sensor measuring a charging current supplied to the battery 289, a voltage sensor measuring a terminal voltage between the positive and negative electrodes of the battery 289, and the battery 289. It may include a temperature sensor that measures the temperature. The sensor module 276 may repeatedly measure the current, voltage, and temperature of the battery 289 in real time or periodically, and a measurement period for one of them may be the same or different from a measurement period for the rest. .

The power management circuit 288 monitors the status of the battery 289 (eg, voltage, current, and temperature) in real time or periodically using the sensor module 276, for example, according to the status of the battery 289. Operations that can be executed by the charge/discharge circuit 210 may be individually controlled. According to an embodiment, the power management circuit 288 is based on at least a part of the information of measuring the state of the battery 289, the state of charge information related to charging of the battery 289 (e.g., life, overvoltage, low voltage, overcurrent, Overcharge, over discharge, overheat, short circuit, or swelling) can be determined.

The power management circuit 288 may determine whether the battery 289 is normal or abnormal based at least in part on the determined state of charge information. When it is determined that the state of the battery 289 is abnormal, the power management module 288 may adjust the charging of the battery 289 (eg, decrease the charging current or voltage, or stop charging). According to an embodiment, at least some of the functions of the power management module 288 may be performed by an external control device (eg, the processor 220).

According to various embodiments of the present disclosure, the processor 220 may control an operation for acquiring various state information, including measuring voltage, current, and temperature of the battery 289. According to an embodiment, the processor 220 estimates the remaining life (SOH) in the battery 289, calculates a state of charge (SOC), performs cell balancing, overcharge, overdischarge, swelling, and internal short. ), it is possible to execute software for at least one of the sudden discharge determination.

On the other hand, there are various techniques for estimating the remaining capacity of the battery based on information related to the battery, for example, the state of the battery 289 (eg, voltage, current, and temperature) in the processor 220, and the remaining capacity of the battery can be determined. An example of the estimation technique will be described later with reference to FIG. 3.

According to various embodiments, the processor 220 performs an operation for proactively diagnosing various battery abnormal conditions occurring inside the battery 289 as well as a condition due to deterioration of the life of the battery 289 according to a user's usage pattern. can do. According to an embodiment, the plurality of battery abnormal states may include battery abnormal states such as sudden discharge, swelling, and internal short circuit.

According to an embodiment, the processor 220 may detect an internal short-circuit condition among abnormal conditions inside a plurality of batteries while monitoring a condition due to deterioration in life of the battery 289. For example, the internal short-circuit condition may be a phenomenon that occurs when a user drops an electronic device or a large impact is applied by an external physical force. A method of detecting such an internal short condition will be described later with reference to FIG. 7A.

According to an embodiment, the processor 220 may detect a swelling state of the battery 289 among abnormal states inside the battery while monitoring a state due to deterioration of the life of the battery 289.

Among battery abnormal states, a swelling state may be a phenomenon in which a can swells due to a rapid increase in pressure inside a battery cell. Such a swelling state may occur mainly due to gas generation inside the cell, such as when gas is generated due to heat generation or ignition of a lithium ion battery cell electrode, or gas is generated due to decomposition of an electrolyte solution due to an overvoltage. In addition, such a swelling condition can cause the battery pack to explode, destroying the battery pack and the device to which the battery pack is attached. This can happen. According to various embodiments, the processor 220 may detect and notify various battery states such as a swelling phenomenon due to overcharging in real time while monitoring a state due to deterioration of the life of the battery 289. According to an embodiment, the processor 220 displays various battery abnormal states using a battery health index, so that the user can not only check the battery problem situation at a glance, but also recognize it in advance. . Accordingly, the progress of swelling can be prevented and damage to the battery leading to the battery ignition can be prevented in advance. This swelling detection method will be described later with reference to FIG. 7B.

According to an embodiment, the processor 220 may detect a state of sudden discharge of the battery 289 among abnormal states inside the battery while monitoring a state due to deterioration of the life of the battery 289. Among the battery abnormal states, the sudden discharge state is a state in which a rapidly high output value (or resistance value) occurs during charging or discharging, and may be a phenomenon occurring at the moment when charging and discharging intersect. A method of detecting such a sudden discharge will be described later with reference to FIG. 7C.

According to various embodiments, the processor 220 may monitor the remaining capacity of the battery 289 in real time, while considering various abnormal states of the battery based on the relationship between various measurement values of the battery and the remaining capacity. By performing diagnosis, it is possible to notify the battery abnormal state in advance. Accordingly, the user can take different actions according to the abnormal state of the battery, thereby more effectively securing the safety of the battery.

The memory 230 may store various data, commands, and software necessary for diagnosing an abnormal state of the battery 289.

According to various embodiments, the electronic device 201 includes a battery 289, at least one processor 220, and a memory 230, and the memory 230 is, when executed, the at least one processor. 220, checks the remaining capacity of the battery 289, outputs information related to the remaining capacity of the battery if the remaining capacity of the checked battery 289 is less than or equal to the threshold remaining capacity, and the checked remaining capacity is the When the battery 289 is not less than the threshold remaining capacity, instructions for outputting information related to an abnormal state of the battery 289 based on the voltage or resistance value of the battery 289 when the battery 289 is charged or discharged may be stored.

According to various embodiments, the instructions include, when the at least one processor 220 checks the voltage or resistance value of the battery when charging or discharging the battery 289, the determined voltage of the battery 289 Alternatively, it may be set to identify at least one battery abnormal state corresponding from among a plurality of battery abnormal states based on the resistance value.

According to various embodiments of the present disclosure, when the at least one processor 220 charges the battery 289 when the amount of change between the checked remaining capacity of the battery 289 and the previous remaining capacity is within a threshold value. Alternatively, it may be set to identify an abnormal state of the battery 289 based on the voltage or resistance value of the battery 289 during discharge.

According to various embodiments of the present disclosure, when the at least one processor 220 has the determined remaining capacity not less than the threshold remaining capacity, the determined remaining capacity of the battery 289 and the previous remaining capacity are When the amount of change is compared with the threshold value, and as a result of the comparison, when the amount of change between the identified remaining capacity of the battery 289 and the previous remaining capacity is within the threshold value, set to identify an abnormal state of the battery 289 Can be. According to an embodiment, when the at least one processor 220 determines, as a result of the comparison, the amount of change between the determined remaining capacity of the battery 289 and the previous remaining capacity is equal to or greater than the threshold value, the remaining battery capacity It may be set to output information related to.

According to various embodiments of the present disclosure, the at least one processor 220 checks the voltage change amount of the battery 289 during charging or discharging of the battery 289, and swells based on the voltage change amount. It may be set to detect whether or not, and to output information related to an abnormal state of the battery 289 based on the result of the swelling detection.

According to various embodiments, the instructions include, when the at least one processor 220 checks the amount of change in resistance of the battery 289 when charging or discharging the battery 289, and based on the amount of resistance change, the It may be set to detect whether or not to be discharged, and to output information related to an abnormal state of the battery 289 based on a result of the sudden discharge detection.

According to various embodiments of the present disclosure, the at least one processor 220 checks the amount of resistance change when the battery 289 is charged and the amount of resistance change when the battery 289 is discharged, and the at least one processor 220 checks the amount of resistance change when the battery 289 is discharged. It may be set to detect whether the battery is rapidly discharged based on at least one of a resistance change amount of and a resistance change amount at the time of discharging of the battery, and to output information related to an abnormal state of the battery based on a result of the sudden discharge detection.

According to various embodiments of the present disclosure, the at least one processor 220 includes an amount of change in the open circuit voltage due to a function using battery limit characteristics, and the battery 289 when charging or discharging the battery 289. It may be set to compare the voltage change amount and output information related to an abnormal state of the battery 289 based on the comparison result.

According to various embodiments of the present disclosure, the difference between the change amount of the open circuit voltage and the voltage change amount of the battery 289 when the battery 289 is charged or discharged by the at least one processor 220 is a threshold voltage change amount. In case of abnormality, it may be set to output information related to an abnormal state of a battery based on a result of detecting an internal short circuit.

3 is a block diagram 300 of an electronic device for providing battery-related information according to various embodiments of the present disclosure.

In an embodiment, the battery-related information may include a state of health (SOH) of a battery or a state of charging (SOC) of a battery. Here, the SOH of the battery may be a ratio of the current capacity of the battery to the capacity at the time of manufacturing the battery. The SOH of a battery may also be referred to by terms such as capacity (or remaining capacity), life (or expected life, or remaining life) of the battery, and battery performance. In addition, the SOC of the battery may include the state of charge of the battery. The SOC of the battery may also be replaced with terms such as the current charge amount and degree of charge of the battery 310.

Referring to FIG. 3, the electronic device may include a battery 310, a processor 320, and a memory 330.

In an embodiment, the battery 310 may have the same or similar configuration as the battery 189 of FIG. 1 or the battery 289 of FIG. 2. Also, the memory 330 may have the same or similar configuration as at least a portion of the memory 130 of FIG. 1 or the memory 230 of FIG. 2. In an embodiment, the memory 330 may include a mapping parameter 331.

In one embodiment, the mapping parameter 331 is a parameter (or parameter set, or coefficient) representing a correlation between the amount of change in the voltage (or output voltage) (or voltage level) of the battery and the SOH (or SOC) of the battery. , Or a function). In an embodiment, the mapping parameter 331 may be a parameter for expressing a relationship between the level of the voltage changed during the specified time and the SOH of the battery by an equation.

In one embodiment, the voltage of the battery related to the mapping parameter 331 may be a closed circuit voltage (or a closed loop voltage) taking into account (or reflecting) the internal resistance (or charging current) of the battery. In one embodiment, the voltage of the battery associated with the mapping parameter 331 is an open circuit voltage (or an open loop voltage) that does not take into account the internal resistance of the battery (or is measured in a no-load state). Hereinafter, the'voltage of the battery' refers to a voltage including the closed circuit voltage of the battery and the open circuit voltage of the battery, and the'output voltage of the battery' refers to the closed circuit voltage of the battery.

In an embodiment, the processor 320 may control an overall operation for providing information on the state of the battery 310. In one embodiment, the processor 320 may have the same or similar configuration as at least a part of the processor 120 of FIG. 1 or the processor 220 of FIG. 2. In an embodiment, the processor 320 may have the same or similar configuration as at least a part of the power management module 288 of FIG. 2. In an embodiment, the processor 320 may be included in the power management module 288 of FIG. 2. In an embodiment, the processor 320 may have the same or similar configuration as at least part of the battery management system (BMS).

In an embodiment, the processor 320 includes an external device connection detection unit 321, a charging current acquisition unit 323, a mapping parameter acquisition unit 325, a voltage variation acquisition unit 327, and an SOH acquisition unit 329 It may include.

In an embodiment, the external device connection detection unit 321 may detect whether an external device (hereinafter referred to as an “external device”) for charging a battery is connected to the electronic device 101.

In an embodiment, the charging current acquisition unit 323 may obtain information on current supplied to the battery 310 through an external device (hereinafter, referred to as “charging current”).

In an embodiment, the mapping parameter obtaining unit 325 may obtain the mapping parameter 331 from the memory 330.

In an embodiment, the mapping parameter acquisition unit 325 includes a mapping parameter 331 stored in the memory 330 as a mapping parameter indicating a correlation between the amount of change in the output voltage of the battery and the SOH (or SOC) of the battery. In this case, a mapping parameter corresponding to the acquired charging current may be obtained from among mapping parameters stored for each charging current (or charging/discharging rate (C-rate)). For example, when the full charge capacity of the battery 310 is 1000 mAh, if the charging current is 100 mA, the charge/discharge rate may be 0.1C, and if the charging current is 1000 mA, the charge/discharge rate may be measured as 1C.

In one embodiment, the mapping parameter acquisition unit 325 comprises a parameter 331 stored in the memory 330 as a mapping parameter indicating a correlation between the change amount of the open circuit voltage of the battery and the SOH (or SOC) of the battery. In this case, a mapping parameter indicating a correlation between the amount of change in the open circuit voltage of the battery and the SOH (or SOC) of the battery may be obtained from the memory 330.

In an embodiment, the mapping parameter acquisition unit 325 is based at least in part on the temperature of the electronic device 101 obtained by the electronic device 101 through the sensor module 176 (for example, a temperature sensor), the mapping parameter (331) can be obtained. For example, the mapping parameter acquisition unit 325 may convert the obtained temperature of the electronic device 101 into a mapping parameter indicating a relationship between a change amount of the voltage of the battery and SOH (or SOC), a temperature parameter, and electrons used in the experiment. By reflecting (or substituting) a function representing the relationship between the temperatures of the device, the mapping parameter can be obtained.

In an embodiment, the voltage change amount acquisition unit 327 may obtain a change amount of the output voltage (or output voltage level) of the battery while the battery 310 is being charged through an external device. In one embodiment, the voltage change amount acquisition unit 327 partially charges the battery 310 through an external device (eg, partially charged from a state that is not completely discharged or charged to a fully charged state, or partially from a fully discharged state). During charging to a state of charge), a change amount of the output voltage (or output voltage level) of the battery 310 may be obtained at specified time intervals.

In one embodiment, the voltage change amount acquisition unit 327 is an output voltage (or output voltage level) of the battery 310 at specified time intervals while the battery 310 is charged from a fully discharged state to a fully charged state through an external device. You can also obtain the amount of change in.

In one embodiment, the voltage change amount acquisition unit 327 is based on the obtained change amount of the output voltage of the battery 310, the obtained charging current, and the internal resistance of the battery 310 (or the obtained output voltage of the battery and By performing an operation using the obtained charging current and the internal resistance of the battery), the amount of change in the open circuit voltage of the battery 310 may be obtained (or calculated).

In one embodiment, the SOH acquisition unit 329 is based at least in part on the obtained mapping parameter 331 and the amount of change in the output voltage of the obtained battery 310 (or the amount of change in the obtained open circuit voltage of the battery 310). Thus, the SOH (or SOC) of the battery 310 may be obtained (or estimated).

In one embodiment, the SOH acquisition unit 329 is, among functions of the amount of change in the output voltage of the battery according to the charging time indicated by the acquired mapping parameter 331, according to a specified time while charging the battery 310 A function corresponding to (or matching) the amount of change (or a function of the amount of change) of the obtained (or measured) output voltage of the battery 310 (or at every specified time) may be obtained.

In an embodiment, the SOH acquisition unit 329 includes functions representing correlations between the amount of change in the output voltage of the battery indicated by the acquired mapping parameter 331 and the SOH (or SOC), and while charging the battery 310 The SOH (or SOC) of the battery 310 may be obtained based at least in part on the amount of change in the output voltage of the battery 310 according to the specified time.

In one embodiment, the SOH acquisition unit 329 is based at least in part on the obtained mapping parameter 331 and the obtained change amount of the output voltage of the battery 310 (or the obtained change amount of the open circuit voltage of the battery), The SOH (or SOC) of the battery 310 may be obtained using a statistical prediction model or a machine learning technique.

In one embodiment, the statistical prediction model is a particle filter, a Bayesian theorem, a Kalman filter, an extended kalman filter, or an unscented kalman filter. And the like. However, the statistical prediction model for obtaining the SOH (or SOC) of the battery 310 is not limited to the above-described example.

In an embodiment, the machine learning technique may include an artificial neural network (ANN), gradient descent, or the like. However, the machine learning technique for obtaining the SOH (or SOC) of the battery 310 is not limited to the above-described example.

Although not shown in FIG. 3, in an embodiment, when an external device is connected to the electronic device 101, the processor 320 corresponds to (or reaches) a charging cycle (cycle or cycle) for obtaining SOH (or SOC). It may further include a configuration for checking. In one embodiment, the processor 320 may periodically acquire the SOH (or SOC) of the battery 310. For example, the processor 320 may perform an operation for acquiring SOH (or SOC) every periodic number of times (eg, about 50 times) to charge the battery 310. In another example, the processor 320 may perform an operation for acquiring SOH (or SOC) at periodic time intervals for charging the battery 310 (eg, at intervals of one week).

According to various embodiments, the remaining capacity of the battery may be the SOH of the battery 310 obtained by the SOH acquisition unit 329, and as described above, a method of estimating the SOH by a function learned through various learning models. Although illustrated, it may not be limited thereto.

4 is a graph 410 showing a change in voltage over time according to remaining capacity of a battery according to various embodiments of the present disclosure.

Referring to FIG. 4, FIG. 4 shows a graph 410 (or a function) representing an output voltage (or output voltage level) (or a change in battery output voltage) of a battery according to a charging time for SOHs of a battery. . That is, in FIG. 4, the voltage change over time when the battery is charged is shown for each remaining capacity (or remaining life) of the battery.

In the graph of FIG. 4, the horizontal axis represents time or the state of charge (SOC), and the vertical axis represents the magnitude of the voltage.

In one embodiment, the graph 410 may be calculated (or obtained) based on a battery life deterioration experiment performed under an accelerated condition (or environment). In an embodiment, the graph may be calculated based on a set of data obtained in a battery life degradation experiment performed under an accelerated condition.

In one embodiment, the function (or curve) 411 is a function representing the output voltage of the battery according to the charging time when the SOH of the battery is about 1, and the function 413 is the charging time when the SOH of the battery is about 0.9 It is a function representing the output voltage of the battery according to, and the function 415 may be a function representing the output voltage of the battery according to the charging time when the SOH of the battery is about 0.8.

According to an embodiment, the function (or curve) 411 is a case where the SOH of the battery is about 1, for example, the remaining battery capacity is about 100%, and the function 413 is a case where the remaining battery capacity is about 90%. , Function 415 can be seen as an example of a case in which the remaining capacity of the battery is about 80%. As such, the remaining capacity of the battery is deteriorated in resistance and capacity depending on the use environment or the period of use, so that the usable capacity decreases or the resistance increases, so that the SOH of the battery, which shows the performance, may decrease compared to the initial period of battery production. As indicated by arrow 417, the battery life for the function 415 may be shorter than the battery life for the function (or curve) 411. Accordingly, in an embodiment, as indicated by the arrow 417, the time for the battery to reach the fully charged state may be shorter as the function 411 goes from the function 411 to the function 415.

However, the functions 411 to 415 representing the output voltage of the battery according to the charging time for each SOH of the battery of FIG. 4 are illustrated, and the technical idea of the present invention is not limited thereto. In one embodiment, the functions 411 to 415 are based on the charging time obtained while supplying the same current (or the same constant current) to batteries having different SOHs (or by supplying the same current). They may be functions representing the output voltage.

In FIG. 4, in one embodiment, for a function 415 (or a battery having an SOH corresponding to the function 415) for a time _{from a reference time t 0} to a time t ₁ , the output voltage of the battery ( V) is _{changed by A 1} (V), and the output voltage (V) of the battery is changed by _{B 1 (V) for the time from the reference time (t 0} ) to the time (t _{1) for the function 413} For the function 411, the output voltage V of the battery may be changed by _{C 1 (V) during the time from the reference time t 0} to the time t _1.

In FIG. 4, in one embodiment, for a function 415 (or a battery having an SOH corresponding to the function 415 ), the output voltage of the battery for a time _{from a reference time t 0} to a time t ₂ V) is _{changed by A 2} (V), and the output voltage (V) of the battery is changed by _{B 2 (V) for the time from the reference time (t 0} ) to the time (t _{2) for the function 413} For the function 411, the output voltage V of the battery may be changed by _{C 2 (V) during the time from the reference time t 0} to the time t _2.

In FIG. 4, in one embodiment, for a function 415 (or a battery having an SOH corresponding to the function 415 ), the output voltage of the battery for a time _{from a reference time t 0} to a time t ₃ V) is _{changed by A 3} (V), and the output voltage (V) of the battery is changed by _{B 3 (V) for the time from the reference time (t 0} ) to the time (t _{3) for the function 413} For the function 411, the output voltage V of the battery may be changed by _{C 3 (V) during a time from the reference time t 0} to the time t _3.

5 is a graph 500 for comparing a resistance value during charging and a resistance value during discharging of a battery according to various embodiments of the present disclosure.

In FIG. 5, a case in which the resistance value at the time of charging 510 of the battery and the resistance value at the time of discharging 520 is compared. The horizontal axis represents time, and the vertical axis represents the magnitude of voltage.

First, when the battery is charged (510), the current charging curve corresponds to the curve indicated by the dotted line below, and the curve indicated by the solid line may be a reference curve based on an open circuit voltage (OCV). The open circuit voltage may be a reference value for measuring the amount of resistance change during charging. In addition, when the battery is discharged 520, the current discharge curve corresponds to the curve indicated by the dotted line above, and the curve indicated by the solid line may be a reference curve based on the open circuit voltage.

According to an embodiment, a resistance value during charging _{may be expressed as'R i,c,now2} ', which may represent a difference between an open circuit voltage and a voltage during a current charging. The resistance value during such charging may be obtained in real time or in a specified unit.

According to an embodiment, a resistance value during discharge _{may be expressed as'R i, d, now2} ', which may represent a difference between an open circuit voltage and a voltage during a current discharge. The resistance value at the time of such discharge may be obtained in real time or in a designated unit. Here, since the resistance value is in a proportional relationship with the voltage, the resistance value at the time of charging or discharging can be obtained only by the amount of change in the voltage.

As described above, when the resistance value during charging and the resistance value during discharge are obtained, the electronic device compares it with the resistance value for the remaining capacity of the battery. An operation of classifying whether this is the case may be performed. As described above, even if the remaining capacity of the battery corresponds to the remaining capacity due to normal deterioration of life, more accurate diagnosis of a battery abnormal state may be possible by using a resistance value during charging and discharging.

6 is a flowchart 600 of an operation of an electronic device for diagnosing an abnormal battery condition according to various embodiments of the present disclosure.

Referring to FIG. 6, the operation method may include operations 605 to 625. Each step/operation of the operation method includes an electronic device (eg, the electronic device 101 or 201 of FIGS. 1 and 2 ), and at least one processor of the electronic device (eg, the processors 120 and 220 of FIGS. 1 and 2 ). )). In an embodiment, at least one of operations 605 to 625 may be omitted, an order of some operations may be changed, or another operation may be added.

In operation 605, the electronic device may check the remaining capacity (eg, SOH) of the battery (eg, the battery 289 of FIG. 2 ). For example, the electronic device may obtain the current remaining capacity of the battery through the method illustrated in FIG. 3 described above.

In operation 610, the electronic device may identify whether the determined remaining capacity is less than or equal to the threshold remaining capacity. The electronic device may check whether the determined remaining capacity of the battery is less than or equal to the critical remaining capacity (or has reached the limit SOH or less). In an embodiment, the critical residual capacity of the battery may be the SOH of the battery corresponding to a state in which the battery is deteriorated and does not operate normally (or a state in which there is a high possibility that the battery does not operate normally). In an embodiment, the critical residual capacity of the battery may be set by a designer (or manufacturer) of an electronic device (or battery).

If the checked remaining capacity is less than or equal to the threshold remaining capacity, in operation 625, the electronic device may output information related to the remaining battery capacity. For example, the electronic device may provide a notification related to a battery life that recommends replacement due to a decrease in battery usage time. For example, the electronic device may output a notification indicating that the lifespan of the battery has reached the limit, using at least one of visual feedback, auditory feedback, and tactile feedback.

On the other hand, when the remaining capacity checked in operation 610 is not less than the threshold remaining capacity, in operation 615, the electronic device may identify whether the amount of change between the checked remaining capacity and the previous remaining capacity is greater than or equal to the threshold value. For example, the electronic device may use the difference between the checked remaining capacity and the previous remaining capacity to determine whether a battery life has not reached its limit or if a battery abnormality occurs. According to an embodiment, after performing an operation of acquiring and checking the remaining capacity of the battery, the electronic device may store the obtained remaining capacity of the battery in a memory (eg, the memory 230 of FIG. 2 ). Also, the electronic device may obtain the remaining capacity of the battery acquired immediately before obtaining the current remaining capacity of the battery from the memory. For example, if the difference between the confirmed remaining capacity and the previous remaining capacity, that is, the amount of change, must change to less than a threshold value, and the current remaining capacity exceeding the threshold value compared to the remaining capacity of the previously obtained battery is obtained, the battery It is regarded that an abnormality has occurred in itself, and information related to the remaining capacity of the battery can be output in operation 625. Here, the threshold value may be a predetermined value, and a threshold value for determining a battery abnormal state may be variously specified in consideration of various situations such as characteristics of each battery and a use environment.

In one embodiment, the output of information related to the remaining battery capacity notifies the user of the electronic device that the remaining capacity of the battery has changed by a specified threshold or more, or the user is a service center related to the electronic device or a manufacturer of the electronic device (or battery). It may include a notification to notify that the remaining capacity of the battery has changed by more than a specified threshold value. In one embodiment, the electronic device is a manufacturer (or manufacturer) of a service center (or a device of a service center) or an electronic device (or battery) related to the electronic device by using a communication module (for example, the communication module 190 in FIG. 1). Device) can send a notification related to the change in the remaining capacity of the battery. However, a method of providing a notification related to a change in the remaining battery capacity is not limited to the above example.

On the other hand, when the amount of change between the remaining capacity checked in operation 615 and the previous remaining capacity is not more than a threshold value, that is, when the change amount is within the threshold value, in operation 620, the electronic device is Information related to an abnormal state of the battery may be output based on the resistance value.

For example, since the amount of change between the checked remaining capacity and the previous remaining capacity is within the threshold, it does not correspond to a state in which there is an internal battery abnormality, but even in the state where the change between the confirmed remaining capacity and the previous remaining capacity is within the threshold. That is, an abnormal battery condition may occur when the battery life is normal. Accordingly, in determining which battery abnormal state corresponds to among various battery abnormal states according to various embodiments, the voltage or resistance value of the battery may be used when the battery is charged or discharged. For example, the electronic device uses the resistance value (or voltage) during charging and discharging, based on the reference resistance (or threshold resistance value) corresponding to the current remaining battery capacity, whether the resistance value during charging increases or when discharged. You can check whether the resistance value of is increased. If there is a resistance value that increases above the threshold value compared to the reference resistance, it is considered that a battery abnormal condition has occurred, and it is possible to identify which of the battery abnormal conditions such as swelling phenomenon and internal short circuit corresponds to the battery abnormal condition. have.

According to an embodiment, there may be a plurality of battery abnormal states, and a voltage or resistance value during charging or discharging of the battery may be used to determine a corresponding at least one battery abnormal state among the plurality of battery abnormal states. . In this way, since the battery abnormal state does not detect only one abnormal state, but also considers the relationship between the voltage or resistance value at the time of charging and discharging the battery as well as the remaining capacity of the battery, it is possible to detect a complex battery abnormal state. have. According to an embodiment, the electronic device may provide a battery health index to indicate a complex battery abnormal state. The battery health indicator may be one of methods for providing information related to an abnormal state of a battery. For reference, the operation of determining the abnormal state of the battery will be described in detail with reference to FIGS. 7A to 7C.

According to various embodiments, a method for diagnosing an abnormal battery condition in an electronic device includes: checking the remaining capacity of the battery, and outputting information related to the remaining battery capacity when the determined remaining capacity of the battery is less than or equal to a threshold remaining capacity. The operation and when the determined remaining capacity is not less than the threshold remaining capacity may include outputting information related to an abnormal state of the battery based on the voltage or resistance value of the battery when the battery is charged or discharged.

According to various embodiments, the method includes an operation of checking a voltage or resistance value of the battery when charging or discharging the battery, and responding among a plurality of battery abnormal states based on the determined voltage or resistance value of the battery. It may further include an operation of identifying at least one abnormal state of the battery.

According to various embodiments, the operation of identifying the abnormal state of the at least one battery may include the voltage of the battery when charging or discharging the battery when the amount of change between the checked remaining capacity and the previous remaining capacity is within a threshold value. Alternatively, it may include an operation of identifying the abnormal state of the at least one battery based on a resistance value.

According to various embodiments, the identification of the abnormal state of the at least one battery may include determining a change amount between the checked remaining capacity of the battery and the previous remaining capacity when the checked remaining capacity is not less than the threshold remaining capacity. An operation of comparing with a value and, as a result of the comparison, identifying an abnormal state of the at least one battery when a change amount between the determined remaining capacity of the battery and the previous remaining capacity is within the threshold value.

According to various embodiments, the outputting of information related to the abnormal state of the battery includes: checking a voltage change amount of the battery during charging or discharging of the battery, and detecting whether or not swelling based on the voltage change amount. And outputting information related to an abnormal state of the battery based on the result of the swelling detection.

According to various embodiments, the outputting of the information related to the abnormal state of the battery includes: checking a change in resistance of the battery when charging or discharging the battery, and detecting whether a battery is rapidly discharged based on the change in resistance. action; And outputting information related to an abnormal state of the battery based on the sudden discharge detection result.

According to various embodiments, the operation of detecting whether a battery is rapidly discharged based on the amount of resistance change may include checking an amount of change in resistance during charging of the battery and an amount of change in resistance during discharging of the battery, and the amount of change in resistance during charging. And detecting whether the battery is rapidly discharged based on at least one of a change in resistance when the battery is discharged.

According to various embodiments, the outputting of information related to the abnormal state of the battery includes comparing an open circuit voltage change amount by a function using a battery limit characteristic and a voltage change amount of the battery when charging or discharging the battery. And outputting information related to an abnormal state of the battery based on the comparison result.

According to various embodiments, the outputting of information related to the abnormal state of the battery may include detecting an internal short circuit when the difference between the open circuit voltage change amount and the voltage change amount of the battery when charging or discharging the battery is greater than or equal to the threshold voltage change amount. It may include an operation of outputting information related to an abnormal state of the battery based on the result.

7A is a flowchart 700a of an operation for diagnosing an abnormal state of a first battery according to various embodiments of the present disclosure.

For example, the electronic device may be in a state in which the remaining capacity of the battery, that is, SOH, is confirmed in operation 605 of FIG. 6, and the electronic device may be in a state in which it is determined that the amount of change between the determined remaining capacity and the previous remaining capacity is not more than a threshold value. Accordingly, the electronic device may determine a battery abnormal state even in a normal life deterioration state.

Referring to FIG. 7A, in operation 710, the electronic device may compare resistance values during charging or discharging of the battery using a battery limit characteristic function. According to an embodiment, the resistance value during charging or discharging of the battery may correspond to a resistance change amount in a predetermined unit, and may be a value proportional to the voltage change amount. According to an embodiment, the electronic device may compare an open circuit voltage change amount due to a function using a battery limit characteristic and a voltage change amount of the battery when the battery is charged or discharged.

For example, if a battery limit characteristic function is used, the reference voltage (or limit voltage) for the identified SOH can be known, and the resistance value (or voltage) at the time of charging or discharging the battery is determined as the reference voltage for the identified SOH. Can be compared with

Here, the battery limit characteristic may refer to a relationship between the limit voltage and the SOH of the battery. The maximum voltage and maximum time that the battery can withstand without irreversible damage to the battery can be referred to as the limit voltage and the limit time, respectively. For example, the voltage of the battery, which is a specific value of SOH, is limited beyond the limit voltage. If it lasts longer than an hour, irreversible damage to the battery may occur. The limit voltage is changed according to the SOH of the battery, and may be predetermined for each SOH of the battery through a preliminary experiment. For example, if the SOH of the battery is 0% to 100%, a limit voltage (or reference voltage) may be determined for each SOH of a specified unit. For example, in order to detect an abnormality in the battery, the limiting characteristics of the battery may be implemented in the form of a function in advance through a battery short circuit experiment.

In operation 715, the electronic device may determine a battery abnormal state based on the comparison result. According to an embodiment, when the difference between the open circuit voltage change amount and the battery voltage change amount during charging or discharging of the battery is greater than or equal to the threshold voltage change amount, it may be detected that the battery is in an abnormal state due to an internal short circuit, using the battery limit characteristic function. . For example, if the difference between the data implemented as the battery limit characteristic function and the charging curve or discharge curve checked in real time as a result of the comparison is greater than or equal to the threshold value, it may be determined that the battery is in an abnormal state corresponding to an internal short circuit. Thereafter, the electronic device may convert a battery abnormal state equal to or higher than the threshold value into a battery health indicator. For example, when the section consisting of health indexes 1 to 12 is divided by battery abnormality status, the electronic device determines that the converted battery health indicator (e.g., when the health index is 3) is section a (or a predetermined If it falls within the first section) (eg, health indicators 1 to 5), it can be confirmed that an internal battery abnormality has occurred due to an internal short circuit, and the abnormal state of the battery corresponding to the internal short circuit can be notified to the user. For example, as illustrated in FIG. 8, by indicating a battery health index as A on the screen, it is possible to indicate that the battery is in an abnormal state due to an internal short circuit.

As described above, the battery limit characteristic function may be used to compare with a resistance value during charging or discharging of the battery. For example, the battery limit characteristic function may be used to compare in real time with a charging curve or a discharge curve generated by resistance values during charging or discharging while an actual user uses an electronic device. Based on the comparison result, the electronic device may detect an abnormal state of the battery, including an abnormal phenomenon inside the battery and damage caused by an external physical force. For example, a battery abnormal state due to an internal short circuit may be detected using a battery characteristic function generated in various short circuit situations, such as when a user drops an electronic device or a large impact is applied by an external physical force. Here, the battery limit characteristic function is a function representing the relationship between the amount of change in the output voltage of the battery (ΔV) and the SOH of the battery, and the amount of change in the open circuit voltage of the battery (ΔV _OCV ) and the SOH of the battery. A detailed description of the characteristic function will be described later with reference to FIGS. 9 and 10.

7B is a flowchart 700b of an operation for diagnosing an abnormal state of a second battery according to various embodiments of the present disclosure.

Referring to FIG. 7B, in operation 720, the electronic device may detect whether the battery is swelling when charging or discharging. In order to determine whether the battery is swelling, data stored in the form of a function in advance through a swelling experiment can be used. For example, the electronic device may generate a swelling-related function using a voltage change amount when charging or discharging a battery. The swelling-related function may be a function that continuously represents a correlation between the SOH of the battery and the amount of voltage change during charging or discharging.

In operation 725, the electronic device may determine a battery abnormal state based on whether swelling is detected. For example, the electronic device calculates the amount of voltage change during charging or discharging of the battery based on the swelling-related function, and compares the curve of the swelling-related function with the curve at the time of charging and discharging to detect whether or not swelling. I can. For example, the swelling-related function is a function ΔV _k implemented by various swelling occurrence phenomena, and may be a function created in the form as in FIG. 9 by matrixing the graph of FIG. 14. A detailed description of this will be described later. Accordingly, the electronic device may determine whether swelling has occurred by comparing it with the database-generated function. For example, if a difference according to a comparison result of a curve by a swelling-related function and a curve during charging or discharging is greater than or equal to a threshold value, the electronic device may detect that swelling has occurred. Also, the electronic device may convert a battery abnormal state corresponding to a swelling phenomenon into a battery health indicator. If the battery health indicator falls within a section corresponding to swelling among a plurality of battery health indicator sections (e.g., a predetermined second section), it can be confirmed that an internal abnormality has occurred due to swelling, and the battery health indicator is used. Thus, it is possible to notify the user of the occurrence of swelling.

7C is a flowchart 700c of an operation for diagnosing an abnormal state of a third battery according to various embodiments of the present disclosure.

Referring to FIG. 7C, in operation 730, the electronic device may compare a change in resistance of the battery with a specified change amount when the battery is charged or discharged. According to an embodiment, when the battery is charged or discharged, the electronic device may check the amount of change in resistance of the battery, and may detect whether the battery is rapidly discharged based on the amount of change in resistance.

In operation 735, the electronic device may determine a battery abnormal state based on the battery comparison result. According to an embodiment, the electronic device checks the amount of resistance change during charging of the battery and the amount of resistance change during discharge of the battery, and is based on at least one of the amount of resistance change during charging and the amount of resistance change during discharge of the battery. Thus, it is possible to detect whether the battery is rapidly discharged. For example, when the electronic device changes from a charged state to a discharged state or a time when the electronic device changes from a discharged state to a charged state, a resistance value may be instantaneously large. At this time, although the voltage value varies depending on the SOC, there may be little difference in the resistance value. However, when the discharge or charging mode is changed, a large change in resistance may appear. Based on this time point, a resistance value in an abnormality state can be detected. For example, when a resistance value measured in real time during charging or discharging rapidly increases by a specified amount of change, for example, about 10% or more, it may be determined that the battery is in an abnormal state due to sudden discharge. When the resistance value increases rapidly as described above, the usage time of the battery rapidly decreases, and thus the resistance value during charging and discharging can be used to check whether there is an abnormality in the battery.

As described above, the resistance value when the state of the battery is changed to either charging or discharging can be implemented as a function through a preliminary experiment, and the curve by the function for detecting such sudden discharge characteristics and the actual charging or discharging By comparing with the curve, it is possible to diagnose an abnormal state of the battery due to sudden discharge. Resistance values used in the rapid discharge characteristic function may be implemented as shown in [Equation 1] below.

In the above [Equation 1], R _i,eod may be a resistance corresponding to end of discharging, and R _i,eoc may be a resistance corresponding to end of charging.

Referring to [Equation 1], when _{the difference between ΔR i,now} > ΔR _i,old increases by 10% or more, it may be determined that the battery use time is rapidly decreased. When such a sudden discharge condition is diagnosed, the user may be informed that a battery problem may occur if the electronic device (or battery) is continuously used. A battery abnormal state due to rapid discharge of the battery will be described later with reference to FIG. 13.

Meanwhile, as one of notification methods related to an abnormal battery condition, visual feedback may be used. In order to describe this in detail, reference will be made to FIG. 8.

8 is a diagram illustrating an example of a screen for providing information related to a battery abnormal state according to various embodiments of the present disclosure.

8 illustrates a screen showing an abnormal state of a battery using a battery health indicator. As shown in FIG. 8, the electronic device may notify a user of a battery abnormal state using a battery health indicator. For example, as shown in FIG. 8, the electronic device may display information on various battery abnormal states together with information on the life of the battery on the screen. For example, the electronic device may display various battery abnormal states such as internal short circuit, swelling, and sudden discharge as a battery health indicator so that the user can check at a glance. For example, the electronic device may classify and notify a battery abnormal state in a plurality of stages, such as a warning to immediately stop charging and a warning notifying that the battery state is unstable. In addition, the electronic device may also indicate a complex abnormal state of an internal short circuit and swelling, not a single battery abnormal state, using the battery health indicator.

9 is a diagram 910 and 920 for explaining a method for generating a battery limit characteristic function according to various embodiments of the present disclosure.

In FIG. 9, a first matrix 910 representing a relationship between a voltage change amount of a battery and a remaining capacity of a battery, and a second matrix 920 representing a relationship between a change amount of an open circuit voltage of a battery and a remaining capacity of the battery according to various embodiments. ) Is illustrated.

As shown in the first matrix 910 of FIG. 9, a mapping parameter representing the relationship between the change amount (ΔV) of the output voltage of the battery and the SOH of the battery (eg, the mapping parameter 331 of FIG. 3) as a factor Can include.

내지

)을 인자로서 포함할 수 있다.In one embodiment, as shown in Fig. 9, the matrix 910 is a mapping parameter, e.g., a set of coefficients (

To

) Can be included as an argument.

In an embodiment, when calculating a mapping parameter representing a correlation between the amount of change in the output voltage of the battery and the SOH of the battery, different mapping parameters may be calculated for each charging current. For example, when calculating the mapping parameter representing the correlation between the amount of change in the output voltage of the battery and the SOH of the battery, in the life deterioration experiment, the charging current 1(A), 2(A), and 3(A) are used to determine the battery. In the case of charging, mapping parameters may be calculated for each charging current 1(A), 2(A), and 3(A).

In addition, as shown in the second matrix 920 of FIG. 9 _{, a mapping parameter indicating the relationship between the change amount (ΔV OCV} ) of the open circuit voltage of the battery and the SOH of the battery (e.g., the mapping parameter 331 of FIG. 3) ) Can be included as an argument. In one embodiment, while charging batteries having different SOH (or SOC) through a life deterioration experiment, using the amount of change in the output voltage of the battery over time, the charging current, and the internal resistance of the battery, Accordingly, the amount of change in the open circuit voltage of the battery may be calculated.

If the data implemented by the function as in FIG. 9 is expressed as a graph, it can be expressed as in FIG. 10.

10 is a graph comparing a reference curve implemented as a function using battery limit characteristics and a curve during charge and discharge according to various embodiments.

Referring to FIG. 10, when data by the first matrix 910 and the data by the second matrix 920 of FIG. 9 are displayed on a graph, they can be expressed as curves. When compared with the curves, the normal battery 1020 and the abnormal battery 1020 can be determined.

11 is a diagram illustrating a battery health index for diagnosing an abnormal battery condition according to various embodiments of the present disclosure.

11 illustrates diagnosis results for each battery (eg, battery A, battery B, battery C, and battery D).

As shown in FIG. 11, the health indicator of the first battery (eg, battery A) 1105 is 14, the health indicator of the second battery (eg, battery B) 1110 is 34, and the third battery (eg : If the health indicator of battery C)(1115) is 3 and the health indicator of the fourth battery (e.g., battery D)(1120) is 7, each battery (1105, 1110, 1115, 1120) is not You can see if it corresponds to the state For example, if the battery health indicator is between 11-7, the a section (1160), the health indicator is between 4-6 and the b section (1150), and the health indicator is between 1-3 and c section ( 1140), the health indicator of the third battery (e.g., battery C) 1115 belongs to section c (1140), and the health indicator of the fourth battery (e.g., battery D) 1120 is section b (1150). ). For example, if section c 1140 is designated as a section corresponding to a battery abnormal state due to an internal short circuit, it can be determined that the third battery (e.g., battery C) 1115 is a battery abnormal state due to an internal short circuit. have. In addition, when section b 1150 is designated as a section corresponding to a battery abnormal state due to swelling, the fourth battery (eg, battery D) 1120 may be determined to be a battery abnormal state due to swelling.

11 illustrates three sections such as an internal short-circuit state, a swelling state, and a rapid discharge state, but the type of the battery abnormal state may not be limited thereto. The number of sections may vary depending on the type of battery abnormality.

According to an embodiment, since the higher the battery health indicator in FIG. 11 indicates that the stability of the battery is higher, it can be seen that the stability of the second battery (eg, battery B) 1110 having a health indicator of 34 is the highest. .

12 is a graph showing resistance values during charging and discharging for each remaining capacity of a battery according to various embodiments of the present disclosure.

In the graph of FIG. 12, the horizontal axis represents time, and the vertical axis represents SOC (charging state) of the battery. As shown in FIG. 12, when the battery is discharged, each SOC is maintained relatively constant over time, whereas when the battery is charged, each SOC rapidly changes over time. When the SOC of the battery is related to the resistance, it is as shown in FIG. 13.

13 is a diagram illustrating resistance values during charging and discharging according to remaining capacity of a battery and resistance values in the case of sudden discharge according to various embodiments of the present disclosure.

As shown in FIG. 13, it can be seen that a case in which a sudden resistance value is detected occurs in a section where the charging and discharging of the battery intersect for each SOC. Accordingly, the electronic device can detect the sudden discharge state even in the case of normal battery life (or charging state) by using the graph at the time of charging and discharging. If it is assumed that the resistance values during charging and discharging according to the remaining capacity of the battery in FIG. 13 and the resistance values in the case of sudden discharge are measured for a battery of a fresh cell, battery aging (or deterioration, Depending on the degree of use), points appear on the graph, which can then be made into a function. As described above, by implementing a matrix in the same format as the function in FIG. 9 and converting it into a database, a graph for detecting a sudden discharge state can be made.

14 is a graph 1400 illustrating a relationship between a voltage change amount of a battery and a remaining capacity of a battery according to various embodiments of the present disclosure.

Referring to FIG. 14, FIG. 14 is a graph showing the amount of change (ΔV) of the output voltage of the battery according to the SOC of the battery for a specified charging time (or charging time interval) (or at each specified charging time) while charging the battery ( Or a function).

The function (ΔV ₁ ) of FIG. 14 is the amount of changes in the output voltage of the battery for SOCs corresponding to the functions 411 to 415 in the time interval from the reference time t ₀ of FIG. 4 to the time t _1. It can be a function that continuously represents the relationship.

The function (ΔV ₂ ) of FIG. 14 is a continuous relationship between changes in the output voltage of the battery with respect to the SOCs corresponding to the functions 411 to 415 in the time interval from the reference time t ₀ to the time t _2. It may be a function represented by.

The function (ΔV _k ) of FIG. 14 is a continuous relationship between variations in the output voltage of the battery with respect to the SOCs corresponding to the functions 411 to 415 in the time interval from the reference time t ₀ to the time t _k. It may be a function represented by.

In one embodiment, based on the graph of FIG. 14 _{, for each of the functions (ΔV 1} to ΔV _K ), a function representing the relationship between the amount of change in the output voltage of the battery and SOH as shown in [Equation 2] below will be calculated. I can.

In [Equation 2], k _{denotes a variable corresponding to a time interval from the reference time t 0} to time t _k , and N may denote the order of the function. In an embodiment, N representing the order of the function may be set to an optimal value that can represent the relationship between _{ΔV k} and SOC _k.

내지

는 기준 시간(t₀)으로부터 시간(t₁) 내지 시간(t_k)까지 각각의 시간 구간에서 ΔV_k 와 SOC_k의 관계를 나타내는 매핑 파라미터를 나타낼 수 있다.In [Equation 2], the coefficient,

To

May represent a mapping parameter representing the relationship between _{ΔV k} and SOC _k in each time interval from the reference time t ₀ to the time t ₁ to the time t _k.

The function representing the relationship between the amount of change in the output voltage of the battery and the SOH as shown in [Equation 2] may be a function for detecting swelling, and may be generated through a preliminary experiment like the battery limit characteristic function.

An electronic device according to various embodiments disclosed in this document may be a device of various types. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device according to the exemplary embodiment of the present document is not limited to the above-described devices.

Various embodiments of the present document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutes of the corresponding embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items unless clearly indicated otherwise in a related context. In this document, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A Each of the 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 Order) is not limited. Some (eg, a first) component is referred to as “coupled” or “connected” to another (eg, a second) component, with or without the terms “functionally” or “communicatively”. 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.

The term "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. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document include one or more commands stored in a storage medium (eg, internal memory 136 or external memory 138) that can be read by a machine (eg, electronic device 101). It may be implemented as software (for example, the program 140) including them. For example, 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 enables 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. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here,'non-transitory' 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.

According to an embodiment, a method according to various embodiments disclosed in the present document may be included in a computer program product and provided. 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 (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store ^TM ) or two user devices It can be distributed (e.g., downloaded or uploaded) directly between, e.g. smartphones) In the case of online distribution, at least some of the computer program products 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.

According to various embodiments, each component (eg, module or program) of the above-described components may include a singular number or a plurality of entities. According to various embodiments of the present disclosure, one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or program) may be integrated into one component. In this case, 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. . According to various embodiments, operations performed by a module, program, or other component may be sequentially, parallel, repeatedly, or heuristically executed, or one or more of the above operations may be executed in a different order or omitted. , Or one or more other actions may be added.

According to various embodiments, in a storage medium storing instructions, the instructions are set to cause the at least one processor to perform at least one operation when executed by at least one processor, and the at least one operation is , An operation of checking the remaining capacity of a battery, an operation of outputting information related to the remaining capacity of a battery when the determined remaining capacity of the battery is less than or equal to a threshold remaining capacity, and an operation of outputting information related to the remaining capacity of the battery, and when the determined remaining capacity is not less than the threshold remaining capacity, the battery During charging or discharging, outputting information related to an abnormal state of the battery based on the voltage or resistance value of the battery may be included.

In addition, the embodiments of the present invention in the present specification and drawings are provided only to provide specific examples in order to easily describe the technical content according to the embodiments of the present invention and to aid understanding of the embodiments of the present invention, and the scope of the embodiments of the present invention I am not trying to limit Therefore, the scope of various embodiments of the present invention should be interpreted as being included in the scope of the various embodiments of the present invention as all changes or modified forms derived based on the technical idea of various embodiments of the present invention in addition to the embodiments of the present invention. .

101: electronic device, 120: processor, 130: memory, 150: input device, 160: display device, 190: communication module

Claims (20)

In the electronic device,
battery;
At least one processor; And
Includes memory,
The memory, when executed, the at least one processor,
Check the remaining capacity of the battery,
If the checked remaining capacity of the battery is less than or equal to the threshold remaining capacity, information related to the remaining capacity of the battery is output,
An electronic device that stores instructions for outputting information related to an abnormal state of a battery based on a voltage or resistance value of the battery when the battery is charged or discharged when the determined remaining capacity of the battery is not less than the threshold remaining capacity .
The method of claim 1, wherein the instructions, the at least one processor,
When charging or discharging the battery, check the voltage or resistance value of the battery,
An electronic device configured to identify a corresponding at least one battery abnormal state among a plurality of battery abnormal states based on the identified voltage or resistance value of the battery.
The method of claim 1, wherein the instructions, the at least one processor,
An electronic device configured to identify an abnormal state of the battery based on a voltage or resistance value of the battery when the battery is charged or discharged when the determined amount of change between the remaining capacity of the battery and the previous remaining capacity is within a threshold value.
The method of claim 3, wherein the instructions, the at least one processor,
When the checked remaining capacity is not less than the threshold remaining capacity, a change amount between the checked remaining capacity of the battery and the previous remaining capacity is compared with the threshold value,
The electronic device configured to identify an abnormal state of the battery when a change amount between the checked remaining capacity of the battery and the previous remaining capacity is within the threshold value as a result of the comparison.
The method of claim 3, wherein the instructions, the at least one processor,
As a result of the comparison, the electronic device configured to output information related to the remaining capacity of the battery when a change amount between the determined remaining capacity of the battery and the previous remaining capacity is equal to or greater than the threshold value.
The method of claim 2, wherein the instructions, the at least one processor,
An electronic device configured to check a voltage change amount of the battery during charging or discharging of the battery, detect whether swelling is based on the voltage change amount, and output information related to an abnormal state of the battery based on the swelling detection result.
The method of claim 2, wherein the instructions, the at least one processor,
An electronic device configured to check the amount of change in resistance of the battery when charging or discharging the battery, detect whether a battery is rapidly discharged based on the amount of resistance change, and output information related to an abnormal state of the battery based on the result of the sudden discharge detection .
The method of claim 7, wherein the instructions, the at least one processor,
Checking the amount of resistance change during charging of the battery and the amount of resistance change during discharging of the battery, and detecting whether the battery is rapidly discharged based on at least one of the amount of resistance change during charging and the amount of resistance change during discharge of the battery, and And an electronic device configured to output information related to an abnormal state of a battery based on a result of the sudden discharge detection.
The method of claim 2, wherein the instructions, the at least one processor,
Compare the amount of change in the open circuit voltage by a function using the battery limit characteristics and the amount of change in the voltage of the battery when charging or discharging the battery,
An electronic device configured to output information related to an abnormal state of a battery based on the comparison result.
The method of claim 9, wherein the instructions, the at least one processor,
An electronic device configured to output information related to an abnormal state of a battery based on a result of detecting an internal short circuit when a difference between the open circuit voltage change amount and the voltage change amount of the battery when charging or discharging the battery is greater than or equal to a threshold voltage change amount.
In a method for diagnosing a battery condition in an electronic device,
Checking the remaining capacity of the battery;
Outputting information related to the remaining capacity of the battery when the determined remaining capacity of the battery is less than or equal to a threshold remaining capacity; And
Diagnosing a battery state including an operation of outputting information related to an abnormal state of the battery based on a voltage or resistance value of the battery when the battery is charged or discharged when the determined remaining capacity is not less than the threshold remaining capacity Way for you.
The method of claim 11,
Checking a voltage or resistance value of the battery when charging or discharging the battery; And
The method for diagnosing a battery condition further comprising the operation of identifying a corresponding at least one battery abnormal condition among a plurality of battery abnormal conditions, based on the checked voltage or resistance value of the battery.
The method of claim 11, wherein the identification of the at least one battery abnormal state comprises:
When the amount of change between the checked remaining capacity of the battery and the previous remaining capacity is within a threshold, identifying the abnormal state of the at least one battery based on the voltage or resistance value of the battery when charging or discharging the battery. Method for diagnosing the battery condition.
The method of claim 13, wherein the identification of the at least one battery abnormal state comprises:
Comparing a change amount between the checked remaining capacity of the battery and the previous remaining capacity with the threshold value when the checked remaining capacity is not less than the threshold remaining capacity;
And identifying the abnormal state of the at least one battery when a change amount between the determined remaining capacity of the battery and the previous remaining capacity is within the threshold value as a result of the comparison.
The method of claim 12, wherein the outputting information related to an abnormal state of the battery comprises:
Checking an amount of change in voltage of the battery during charging or discharging of the battery;
Detecting whether to swell based on the voltage change amount; And
And outputting information related to an abnormal state of a battery based on a result of the swelling detection.
The method of claim 12, wherein the outputting information related to an abnormal state of the battery comprises:
Checking an amount of change in resistance of the battery when charging or discharging the battery;
Detecting whether a battery is rapidly discharged based on the resistance change amount; And
And outputting information related to an abnormal state of a battery based on a result of the sudden discharge detection.
The method of claim 16, wherein detecting whether the battery is rapidly discharged based on the amount of resistance change,
Checking an amount of change in resistance when the battery is charged and an amount of change in resistance when the battery is discharged; And
And detecting whether the battery is rapidly discharged based on at least one of a change in resistance during charging and a change in resistance during discharge of the battery.
The method of claim 12, wherein the outputting information related to an abnormal state of the battery comprises:
Comparing an open circuit voltage change amount by a function using a battery limit characteristic and a voltage change amount of the battery when charging or discharging the battery; And
And outputting information related to an abnormal state of the battery based on the comparison result.
The method of claim 18, wherein the outputting information related to an abnormal state of the battery comprises:
When the difference between the open circuit voltage change amount and the voltage change amount of the battery at the time of charging or discharging the battery is greater than or equal to the threshold voltage change amount, a battery state including an operation of outputting information related to an abnormal state of the battery based on an internal short detection result How to make a diagnosis.
A storage medium storing instructions, wherein the instructions are configured to cause the at least one processor to perform at least one operation when executed by at least one processor, wherein the at least one operation comprises:
Checking the remaining capacity of the battery;
Outputting information related to the remaining capacity of the battery when the determined remaining capacity of the battery is less than or equal to a threshold remaining capacity; And
And outputting information related to an abnormal state of the battery based on a voltage or resistance value of the battery when the battery is charged or discharged when the determined remaining capacity is not less than the threshold remaining capacity.

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