Electronic devices and the methods employed by these electronic devices.

Abstract

The various options of the invention relate to electronic devices and methods by which such electronic devices are employed. The electronic devices consist of: a first charger comprising a switching regulator; and a second charger comprising a power converter which lowers the input current supplied from the external device by a specified multiplier, and increases the input voltage supplied from the external device by a specified multiplier; and a processor, in which the processor is configured to: determine, on the basis of detecting that the external device is connected in a wired manner, whether the external device is a first charger capable of controlling the output voltage and output current on the basis of control of the electronic device; charge the battery using the second charger, if the external device is a first charger;Charge the battery using the second charger, if the external device is a second charger with fixed output current and output voltage, and if the battery satisfies the defined initialization conditions; and deactivate the second charger and charge the battery using the first charger, if at least one of the several defined first conditions is satisfied while charging the battery via the second charger.

Description

Electronic devices with enhanced compatibility for direct charging

[0001] Various embodiments of the present disclosure relate to electronic devices having enhanced compatibility with direct charging.

[0002] As technology advances, the power consumption of portable electronic devices is increasing, and accordingly, the capacity of batteries (or battery cells) installed in portable electronic devices is also increasing.

[0003] Recently, chargers supporting the programmable power supply (PPS) function have been mass-produced to more quickly charge high-capacity batteries installed in electronic devices. Unlike other chargers that do not support the PPS function (e.g., chargers that provide a fixed output current and a fixed output voltage), chargers supporting the PPS function can support the PPS (programmable power supply) function, which allows the power value (e.g., current and / or voltage) of a power signal to be changed. For example, a charger supporting the PPS function can vary the output current and output voltage based on the control of the electronic device. On the other hand, a charger that does not support the PPS function can have a fixed output current and output voltage.

[0004] When an electronic device detects that a charger is connected via a universal serial bus (USB) connector, it can determine whether the connected charger provides PPS functionality.

[0005] An electronic device can activate a direct charging circuit (e.g., a direct charging integrated circuit (DCIC)) and charge a battery using the direct charging circuit if the connected charger supports the PPS function. The direct charging circuit can rapidly charge the battery by lowering the voltage value of a power signal received from the charger by a specified factor and increasing the current value of the power signal by a specified factor.

[0006] Electronic devices can disable the direct charging circuit and charge the battery using a switching charger circuit if the connected charger does not support PPS functionality. Charging a battery using a switching charger circuit has the disadvantage of lower charging efficiency (e.g., charging speed) and higher heat generation compared to charging a battery using a direct charging circuit.

[0007] Various embodiments of the present disclosure can provide an electronic device and method that can increase charging efficiency (e.g., charging speed) and reduce heat generation by charging a battery using a direct charging circuit during at least a portion of the battery charging period, even if the charger does not support the PPS function.

[0008] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

[0009] According to various embodiments, an electronic device includes a battery, a first charger including a switching regulator, a second charger including a power converter for increasing an input current supplied from an external device by a specified multiplier and outputting it, and for decreasing an input voltage supplied from the external device by the specified multiplier and outputting it, and a processor, wherein the processor determines a type of the external device based on detecting that the external device is connected by a wire, determines whether the external device is a first charger capable of adjusting an output voltage and an output current based on the control of the processor, and if the external device is the first charger, charges the battery using the second charger, and if the external device is not the first charger and is a second charger having a fixed output voltage and an output current: determines whether the battery satisfies a condition in which a remaining amount or a voltage of the battery is less than a specified value as a specified initial condition, and if the battery does not satisfy the specified initial condition, charges the battery using the first charger, and if the battery satisfies the specified initial condition, charges the battery using the second charger, and While charging the battery through the second charger, a plurality of first conditions are monitored, including a state in which a current greater than the input current is input from the second charger, a state in which the battery voltage of the battery is detected as a voltage higher than a specified full charge voltage, or a state in which the input current is less than a preset value, and when at least one of the plurality of first conditions is met, the second charger is deactivated and the battery is charged using the first charger.

[0010] In a method of an electronic device according to various embodiments, the electronic device includes a battery, a first charger including a switching regulator, and a second charger including a power converter for lowering an input current supplied from an external device by a specified rate and increasing an input voltage supplied from the external device by the specified rate, and the method includes: an operation of checking a type of the external device based on detecting that the external device is connected by a wire; an operation of determining whether the external device is a first charger capable of adjusting an output voltage and an output current based on a control of the electronic device; an operation of charging the battery using the second charger if the external device is the first charger; and an operation of checking whether the battery satisfies a condition in which a remaining amount or voltage of the battery is less than a specified value as a specified initial condition if the battery does not satisfy the specified initial condition; an operation of charging the battery using the first charger if the battery satisfies the specified initial condition; and an operation of charging the battery using the second charger if the battery satisfies the specified initial condition. The method may include monitoring whether a plurality of first conditions are satisfied while charging the battery through the second charger, wherein a current greater than the input current is input from the second charger, a battery voltage of the battery is detected as a voltage higher than a specified full charge voltage, or the input current is less than a preset value, and when at least one of the plurality of first conditions is satisfied, disabling the second charger and charging the battery using the first charger.

[0011] Various embodiments of the present disclosure can provide an electronic device and method that can increase charging efficiency (e.g., charging speed) and reduce heat generation by charging a battery using a direct charging circuit during at least a portion of the battery charging period, even if the charger does not support the PPS function.

[0012] In addition, various effects may be provided directly or indirectly through the present disclosure.

[0013] Other aspects, features and advantages according to specific embodiments of the present disclosure will become more apparent from the accompanying drawings and the corresponding description.

[0014] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0015] FIG. 2 is a block diagram of a power management module and a battery according to various embodiments.

[0016] FIG. 3 is a schematic block diagram of a wireless charging system according to various embodiments.

[0017] FIG. 4 is a flowchart illustrating an operation of an electronic device charging a battery according to one embodiment.

[0018] FIG. 5 is a flowchart illustrating the operation of an electronic device according to one embodiment when a second charger is connected.

[0019] FIG. 6 is a graph comparing the charging profile of an electronic device according to one embodiment and the charging profile according to a comparative example when a second charger is connected.

[0020] FIG. 7 is a graph comparing the heat generation of an electronic device according to one embodiment and the heat generation of an electronic device according to a comparative example when a second charger is connected.

[0021] FIG. 8 is a flowchart illustrating the operation of an electronic device according to one embodiment when a third charger is connected.

[0022] FIG. 9 is a graph illustrating a charging profile of an electronic device according to one embodiment when a third charger is connected.

[0023] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0024] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor)) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0025] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0026] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

[0027] 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).

[0028] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0029] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0030] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0031] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0032] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0033] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one 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.

[0034] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0035] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0036] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0037] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0038] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0039] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0040] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0041] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). 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), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0042] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0043] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0044] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0045] Electronic devices according to various embodiments disclosed in the present disclosure may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of the present disclosure are not limited to the aforementioned devices.

[0046] The various embodiments of the present disclosure and the terminology used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the 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 items, unless the context clearly indicates otherwise. In the present disclosure, each of the phrases "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 "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among the phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0047] The term "module" used in various embodiments of the present disclosure may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0048] Various embodiments of the present disclosure may be implemented as software (e.g., a program (140)) including one or more commands stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one command among the one or more commands stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one command called. The one or more commands may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0049] According to one embodiment, the method according to various embodiments disclosed in the present disclosure may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0050] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0051] FIG. 2 is a block diagram (200) of a power management module (188) and a battery (189) according to various embodiments. Referring to FIG. 2, the power management module (188) may include a charging circuit (210), a power regulator (220), or a power gauge (230). The charging circuit (210) may charge the battery (189) using power supplied from an external power source for the electronic device (101). According to one embodiment, the charging circuit (210) may select a charging method (e.g., normal charging or rapid charging) based on at least some of the type of the external power source (e.g., power adapter, USB, or wireless charging), the amount of power that can be supplied from the external power source (e.g., about 20 watts or more), or the properties of the battery (189), and may charge the battery (189) using the selected charging method. The external power source may be connected to the electronic device (101) by wire, for example, via a connection terminal (178), or wirelessly via an antenna module (197).

[0052] The power regulator (220) can generate a plurality of powers having different voltages or different current levels by adjusting the voltage level or current level of the power supplied from, for example, an external power source or a battery (189). The power regulator (220) can adjust the power of the external power source or the battery (189) to a voltage or current level suitable for each of the components included in the electronic device (101). According to one embodiment, the power regulator (220) can be implemented in the form of an LDO (low drop out) regulator or a switching regulator. The power gauge (230) can measure usage status information for the battery (189) (e.g., capacity, number of charge / discharge cycles, voltage, or temperature of the battery (189).

[0053] The power management module (188) can determine charging state information (e.g., lifespan, overvoltage, undervoltage, overcurrent, overcharge, overdischarge, overheat, short circuit, or swelling) related to charging of the battery (189) based at least in part on the measured usage state information, for example, using the charging circuit (210), the power regulator (220), or the power gauge (230). The power management module (188) can determine whether the battery (189) is normal or abnormal based at least in part on the determined charging state information. If the state of the battery (189) is determined to be abnormal, the power management module (188) can adjust charging of the battery (189) (e.g., reducing the charging current or voltage, or stopping charging). According to one embodiment, at least some of the functions of the power management module (188) can be performed by an external control device (e.g., the processor (120)).

[0054] The battery (189) may, according to one embodiment, include a battery protection circuit module (PCM) (240). The battery protection circuit (240) may perform one or more of various functions (e.g., a pre-cut function) to prevent performance degradation or damage to the battery (189). The battery protection circuit (240) may additionally or alternatively be configured as at least a part of a battery management system (BMS) that may perform various functions including cell balancing, capacity measurement of the battery, charge / discharge cycle measurement, temperature measurement, or voltage measurement.

[0055] According to one embodiment, at least a portion of the usage status information or the charging status information of the battery (189) may be measured using a corresponding sensor (e.g., a temperature sensor) among the sensor modules (276), a power gauge (230), or a power management module (188). According to one embodiment, the corresponding sensor (e.g., a temperature sensor) among the sensor modules (176) may be included as a part of the battery protection circuit (140) or may be placed near the battery (189) as a separate device.

[0056] An electronic device (e.g., an electronic device (301) of FIG. 3) according to various embodiments includes a battery (e.g., a battery (189) of FIG. 1), a first charger including a switching regulator (e.g., a first charger (310) of FIG. 3), a second charger including a power converter that increases an input current supplied from an external device (e.g., an external device (302) of FIG. 3) by a specified multiplier and outputs the input current, and decreases an input voltage supplied from the external device (302) by the specified multiplier and outputs the input current, and a processor (e.g., a processor (120) of FIG. 1), wherein the processor (120) determines the type of the external device (302) based on detecting that the external device (302) is connected by a wire, and the external device (302) can adjust an output voltage and an output current based on the control of the processor (120). Determine whether the external device (302) is a charger, and if the external device (302) is the first charger, charge the battery (189) using the second charger (320), and if the external device (302) is not the first charger and is a second charger having a fixed output voltage and output current: Check whether the battery (189) satisfies a condition that the remaining amount or voltage of the battery (189) is less than a specified value as a specified initial condition, and if the battery (189) does not satisfy the specified initial condition, charge the battery (189) using the first charger (310), and if the battery (189) satisfies the specified initial condition, charge the battery (189) using the second charger (320), and while charging the battery (189) through the second charger (320), a state in which a current greater than the input current is input from the second charger as a plurality of specified first conditions, Monitor whether the battery voltage of the battery (189) is detected as a voltage higher than the specified full charge voltage, or whether the input current is less than the preset value.And if at least one of the plurality of first conditions is satisfied, the second charger (320) can be deactivated and the battery (189) can be charged using the first charger (310).

[0057] According to one embodiment, the state in which the input current is less than the preset value may include a state in which the input current is less than a current value lowered by the specified multiplier from the maximum input current that can be supplied to the battery (189) from the first charger (310).

[0058] In one embodiment, the second charger may be a charger that does not support PD (power delivery) communication and provides an output less than a specified reference power.

[0059] In one embodiment, the second charger may be a charger that does not support a programmable power supply (PPS) function.

[0060] According to one embodiment, the processor (120) sets an input current by applying an offset to the maximum output current that the second charger can provide, if the external device (302) connected to the electronic device (301) is the second charger and satisfies the specified initial condition, and requests the second charger to provide the input current to which the offset is applied, thereby receiving the maximum output current from the second charger and controlling the maximum output current from the second charger to be input to the second charger (320), thereby charging the battery (189).

[0061] In one embodiment, the processor (120) may be configured to: determine whether the battery (189) satisfies a specified initial condition if the external device (302) is not the first charger but a third charger having a fixed output voltage and output current; if the battery (189) does not satisfy the specified initial condition, charge the battery (189) using the first charger (310); if the battery (189) satisfies the specified initial condition, charge the battery (189) using the second charger (320); monitor whether at least one of a plurality of specified second conditions is satisfied while charging the battery (189) through the second charger (320); and if at least one of the plurality of second conditions is satisfied, deactivate the second charger (320) and charge the battery (189) using the first charger (310).

[0062] According to one embodiment, the third charger may be a charger that supports PD (power delivery) communication and provides an output greater than or equal to a specified reference power.

[0063] According to one embodiment, the plurality of second conditions may include a state in which a current greater than the input current is input from the third charger, a state in which the battery voltage of the battery (189) is detected as a voltage higher than a specified full charge voltage in the last step section among the plurality of charging steps for charging the battery (189), or a state in which the output current of the third charger is switched from a CC (constant current) mode in which the output voltage of the third charger is fixed to a CV (constant voltage) mode in which the output voltage of the third charger is fixed.

[0064] According to one embodiment, the processor (120) may adjust the output cycle of a polling signal for checking the current input to the second charger (320) to be short when the third charger is switched from the CC mode to the CV mode.

[0065] According to one embodiment, when the third charger switches from the CC mode to the CV mode, the processor (120) compares a value obtained by applying a specified multiplier to the maximum input current supplied from the first charger (310) to the battery (189) with an input current input from the third charger, and when the input current input from the third charger is less than or equal to a value obtained by applying a specified multiplier to the maximum input current, the second charger (320) is deactivated and the battery (189) is charged using the first charger (310).

[0066] In a method of an electronic device (301) according to various embodiments, the electronic device (301) includes a battery (189), a first charger (310) including a switching regulator, and a second charger (320) including a power converter for lowering an input current supplied from an external device (302) by a specified rate and increasing an input voltage supplied from the external device (302) by the specified rate, and the method includes: an operation of checking a type of the external device (302) based on detecting that the external device (302) is connected by a wire; an operation of determining whether the external device (302) is a first charger capable of adjusting an output voltage and an output current based on the control of the electronic device (301); an operation of charging the battery (189) using the second charger (320) if the external device (302) is the first charger; and an operation of determining whether the external device (302) is not the first charger and can adjust an output voltage and an output current. If the second charger has a fixed output current: an operation of checking whether the battery (189) satisfies a condition that the remaining capacity or voltage of the battery (189) is less than a specified value as a specified initial condition, an operation of charging the battery (189) using the first charger (310) if the battery (189) does not satisfy the specified initial condition, an operation of charging the battery (189) using the second charger (320) if the battery (189) satisfies the specified initial condition, an operation of monitoring whether a plurality of specified first conditions while charging the battery (189) through the second charger (320) are satisfied, such as a state in which a current greater than the input current is input from the second charger, a state in which the battery voltage of the battery (189) is detected as a voltage higher than a specified full charge voltage, or a state in which the input current is less than a preset value, and an operation of disabling the second charger (320) if at least one of the plurality of first conditions is satisfied,It may include an operation of charging the battery (189) using the first charger (310).

[0067] According to one embodiment, the state in which the input current is less than the preset value may include a state in which the input current is less than a current value lowered by the specified multiplier from the maximum input current that can be supplied to the battery (189) from the first charger (310).

[0068] In one embodiment, the second charger may be a charger that does not support PD (power delivery) communication and provides an output less than a specified reference power.

[0069] In one embodiment, the second charger may be a charger that does not support a programmable power supply (PPS) function.

[0070] According to one embodiment, if the external device (302) connected to the electronic device (301) is the second charger and the specified initial condition is satisfied, the method may further include: setting an input current by applying an offset to the maximum output current that the second charger can provide; requesting the second charger to provide the input current to which the offset is applied, thereby receiving the maximum output current from the second charger; and controlling the maximum output current from the second charger to be input to the second charger (320), thereby charging the battery (189).

[0071] According to one embodiment, if the external device (302) is not the first charger but a third charger having a fixed output voltage and output current: the method may further include: checking whether the battery (189) satisfies a specified initial condition; if the battery (189) does not satisfy the specified initial condition, charging the battery (189) using the first charger (310); if the battery (189) satisfies the specified initial condition, charging the battery (189) using the second charger (320); monitoring whether at least one of a plurality of specified second conditions is satisfied while charging the battery (189) through the second charger (320); and if at least one of the plurality of second conditions is satisfied, disabling the second charger (320); and charging the battery (189) using the first charger (310).

[0072] According to one embodiment, the third charger may be a charger that supports PD (power delivery) communication and provides an output greater than or equal to a specified reference power.

[0073] According to one embodiment, the plurality of second conditions may include a state in which a current greater than the input current is input from the third charger, a state in which the battery voltage of the battery (189) is detected as a voltage higher than a specified full charge voltage in the last step section among the plurality of charging steps for charging the battery (189), or a state in which the output current of the third charger is fixed and the third charger is switched from a constant current (CC) mode to a constant voltage (CV) mode.

[0074] According to one embodiment, when the third charger switches from the CC mode to the CV mode, the operation may further include shortening the output cycle of a polling signal for checking the current input to the second charger (320).

[0075] According to one embodiment, when the third charger switches from the CC mode to the CV mode, the method may further include an operation of comparing a value obtained by applying a specified multiplier to a maximum input current supplied from the first charger (310) to the battery (189) with an input current input from the third charger, an operation of deactivating the second charger (320) when the input current input from the third charger is less than or equal to a value obtained by applying a specified multiplier to the maximum input current, and an operation of charging the battery (189) using the first charger (310).

[0076] FIG. 3 is a schematic block diagram of a wireless charging system according to various embodiments.

[0077] The electronic device (301) illustrated in FIG. 3 may include an embodiment that is at least partially similar to or different from the electronic device (101) illustrated in FIG. 1.

[0078] Referring to FIG. 3, a wireless charging system according to various embodiments may include an electronic device (301) and / or an external device (302). According to one embodiment, the external device (302) may be a charger (TA (travel adapter)) that is connected to the electronic device (301) in a wired manner and supplies a designated power to the electronic device (301). In one embodiment, the external device (302) may be an electronic device similar to the electronic device (301) (e.g., the electronic device (102) or the electronic device (104) of FIG. 1).

[0079] According to one embodiment, the external device (302) may be a charger (302) capable of adjusting output voltage and output current, for example, a charger (302) supporting a PPS (programmable power supply) function, or a charger (302) with fixed output voltage and output current, for example, a charger (302) not supporting a PPS function. In the present disclosure, a charger (302) supporting a PPS function is described as an example of a charger (302) capable of adjusting output voltage or output current, but may not be limited to the term PPS. For example, a charger (302) supporting a PPS function is only one example, and any charger (302) may be used as long as it can adjust output voltage or output current.

[0080] According to one embodiment, when the external device (302) is a charger (302) supporting the PPS function, the external device (302) can change or adjust the output voltage or output current in various ways based on the control of the electronic device (301). For example, when the external device (302) is a charger (302) supporting the PPS function, the external device (302) can adjust the output voltage in a range of about 3 V to about 21 V. In the present disclosure, the external device (302) supporting the PPS function may be referred to as a “first charger.”

[0081] In one embodiment, when the external device (302) is a charger (302) that does not support the PPS function, the external device (302) may supply a fixed output voltage or a fixed output current to the electronic device (301). In one embodiment, the external device (302) is a charger (302) that does not support the PPS function, an adaptive fast charging (AFC) charger (302) that complies with the standard of Samsung Electronics™, and may provide a fixed output voltage of about 9 V. In the present disclosure, the external device (302) corresponding to the AFC charger will be referred to as a “second charger.” In one embodiment, the second charger is not limited to an AFC charger and may be variously modified. For example, the second charger may be a charger (302) that provides a fixed output voltage and a fixed output current and does not support the PD standard (or PD communication). For example, the second charger may be a charger (302) that provides a fixed output voltage and a fixed output current, and provides an output that is less than a specified reference power. In one embodiment, the specified reference power may be about 20 W, and the second charger may be a charger (302) that provides a power that is less than about 20 W. For example, the second charger may be a charger (302) that provides a power of about 15 W, which is less than about 20 W.

[0082] In one embodiment, the external device (302) is a power delivery (PD) 2.0 compliant charger (302) having a fixed power data object (PDO) (e.g., a fixed output voltage or a fixed output current), and may provide a fixed output voltage of, for example, about 9 V. In the present disclosure, the external device (302) corresponding to the PD 2.0 compliant charger (302) is referred to as a “third charger.” In one embodiment, the third charger is not limited to a PD 2.0 compliant charger (302), and may be any charger (302) that does not support the PPS function and supports the PD specification (or PD communication). In one embodiment, the third charger may be a charger (302) that provides a fixed output voltage and a fixed output current, and provides an output that is greater than or equal to a specified reference power. In one embodiment, the designated reference power may be about 20 W, and the third charger may be a charger (302) that provides a power greater than or equal to about 20 W. For example, the third charger may provide an output of about 20 W, or greater than about 20 W, such as about 27 W, about 45 W, and / or about 100 W. The third charger may provide a fixed output voltage of about 5 V, about 9 V, about 15 V, and / or about 20 V.

[0083] According to one embodiment, the external device (302) can communicate with the electronic device (301) via a MUIC (e.g., MUX IC) (323) and / or a USB communication module (e.g., CCPD module) (322) of the electronic device (301). For example, the external device (302) can be connected to the USB communication module (e.g., CCPD module) (322) of the electronic device (301) via a CC terminal of a USB C type.

[0084] According to one embodiment, the electronic device (301) may include an overvoltage protection device (e.g., an overvoltage protection IC (OVP)) (321), a first charger (310), a second charger (320), a USB communication module (322), a MUIC (e.g., a MUX IC) (323), a processor (120), a battery (189), or a fuel gauge (230).

[0085] According to one embodiment, the first charger (310), the second charger (320), the USB communication module (e.g., CCPD module) (322), and the processor (120) may be connected to each other via a designated system interface. For example, the designated system interface may include an inter-integrated circuit (I2C), but the present disclosure may not be limited thereto.

[0086] According to one embodiment, the first charger (310) includes a switching charger (or switching regulator) including a buck-boost converter (not shown) and a charge controller (not shown), and can charge the battery (189) by adjusting an input voltage input from an external device (302) or an input current input from the external device (302).

[0087] According to one embodiment, the second charger (320) may be a direct charger that supports direct charging (hereinafter, “DC charging”) using a switched cap (capacitor) divider method. According to one embodiment, the second charger (320) may include a power converter that lowers an input voltage input from an external device (302) by a specified ratio and increases an input current input from the external device (302) by a specified ratio. According to one embodiment, the second charger (320) may include a 2:1 voltage divider that lowers an input voltage by half and increases an input current by two times. According to various embodiments, the second charger (320) is not limited to including a 2:1 voltage divider, but may be variously designed to include a 3:1 voltage divider that reduces the input voltage by 1 / 3 and increases the input current by 3 times, or a 4:1 voltage divider that reduces the input voltage by 1 / 4 and increases the input current by 4 times.

[0088] The USB communication module (322) may be named a "CCPD module" and may perform a type C detection function for checking the Rp value through the CC terminal of the charger (302), and PD BMC (bi-phase marked code) communication, or PPS communication. The Rp value may be an identification value for identifying the type of cable of the charger (302). After performing PD BMC communication with the external device (302), the electronic device (301) may receive a designated power having a voltage boosted from about 5 V to about 9 V from the external device (302).

[0089] According to one embodiment, the electronic device (301) can perform data line communication with the external device (302) through a MUIC (e.g., MUX IC) (323) and check the type of the charger (302) when the external device (302) is a second charger (e.g., AFC charger). According to one embodiment, after performing data line communication with the external device (302), the electronic device (301) can receive a designated power having a voltage of about 9 V from the external device (302).

[0090] According to one embodiment, the processor (120) can determine the type of the external device (302) when the electronic device (301) and the external device (302) are connected via a wired connection. For example, when the electronic device (301) and the external device (302) are connected via a wired connection, the processor (120) can determine whether the external device (302) is a charger (302) that supports the PPS function.

[0091] According to one embodiment, the processor (120) can charge the battery (189) by controlling the second charger (320) when the external device (302) is a charger (302) that supports the PPS function (e.g., when the external device (302) is a first charger). According to one embodiment, the processor (120) can dynamically vary the current setting value of the second charger (320) based on the remaining capacity (or battery level) of the battery (189) or the input current when the external device (302) is a charger (302) that supports the PPS function.

[0092] According to one embodiment, the processor (120) may charge the battery (189) using the second charger (320) for at least a portion of the time during which the battery (189) is charged, and may charge the battery (189) using the first charger (310) for the remainder of the time during which the battery (189) is charged, when the external device (302) is a charger (302) that does not support the PPS function (e.g., when the external device (302) is a second charger or a third charger).

[0093] FIG. 4 is a flowchart illustrating an operation of an electronic device (301) charging a battery (189) according to one embodiment.

[0094] At least some of the operations illustrated in FIG. 4 may be omitted. At least some of the operations mentioned with reference to other drawings in this disclosure may be additionally inserted before or after at least some of the operations illustrated in FIG. 4.

[0095] The operations illustrated in FIG. 4 may be performed by a processor (e.g., the processor of FIG. 1). For example, the memory of the electronic device (301) (e.g., the memory (130) of FIG. 1) may store instructions that, when executed, cause the processor to perform at least some of the operations illustrated in FIG. 4.

[0096] Hereinafter, with reference to FIG. 4, an operation of an electronic device (301) charging a battery (189) according to one embodiment will be described.

[0097] In operation 410, an electronic device (301) according to one embodiment may detect the connection of a charger (302). For example, the electronic device (301) may detect whether the charger (302) is connected in a wired manner.

[0098] In operation 420, the electronic device (301) according to one embodiment can identify the type of the charger (302) when it detects the connection of the charger (302). For example, the electronic device (301) can perform a type C detection operation to identify the Rp value of the charger (302) through the USB communication module (322). Based on the type C detection operation, the electronic device (301) can identify whether the charger (302) is a first charger supporting the PPS function or a charger (302) (e.g., a second charger or a third charger) that does not support the PPS function. In one embodiment, the electronic device (301) can identify whether the charger (302) is a second charger (e.g., an AFC charger) having a fixed output voltage and a fixed output current based on performing data line communication with the charger (302) through a MUIC (e.g., a MUX IC) (323).

[0099] In operation 430, the electronic device (301) according to one embodiment may determine whether the wired charger (302) supports the PPS function. For example, the electronic device (301) may determine whether the charger (302) is a first charger that supports the PPS function.

[0100] According to one embodiment, the electronic device (301) may perform operation 440 if the charger (302) is a first charger that supports the PPS function (e.g., the result of operation 430 is “Yes”).

[0101] According to one embodiment, the electronic device (301) may perform operation 441 if the charger (302) is a charger (e.g., a second charger or a third charger) that does not support the PPS function (e.g., the result of operation 430 is “No”).

[0102] In operation 440, the electronic device (301) according to one embodiment may determine an input current and an input voltage based on a battery voltage if the charger (302) is a first charger supporting a PPS function (e.g., the result of operation 430 is “Yes”). The processor may transmit the determined input current and input voltage to the second charger (320) via a designated system interface (e.g., I2C (inter-integrated circuit)). In one embodiment, the second charger (320) may perform PPS communication with the first charger via a USB communication module (322) and receive power corresponding to the determined input current and input voltage from the first charger. When the battery voltage increases as the processor receives power from the first charger, the processor may charge the battery (189) by adjusting the input current and input voltage using the PPS function of the charger (302).

[0103] According to one embodiment, the processor can charge the battery (189) in a constant current (CC) mode or a constant voltage (CV) mode, depending on the battery voltage. The processor can control the current supplied to the battery (189) in the CC mode to maintain a preset value. The processor can control the voltage used to charge the battery (189) in the CV mode to maintain a preset value.

[0104] In operation 441, the electronic device (301) according to one embodiment may determine whether the battery (189) satisfies a specified initial condition if the charger (302) is a charger (e.g., a second charger or a third charger) that does not support the PPS function (e.g., the result of operation 430 is “No”). For example, the specified initial condition may include a condition in which the remaining capacity (e.g., battery level) of the battery (189) is less than a specified percentage value, and / or a condition in which the battery voltage is less than a specified voltage. According to one embodiment, the electronic device (301) may determine that the battery (189) satisfies the specified initial condition if the remaining capacity of the battery (189) satisfies a condition in which the remaining capacity is less than a specified percentage value (e.g., about 5%), and / or the battery voltage is less than a specified voltage (e.g., about 3.6 V). For example, the electronic device (301) may determine that the specified initial condition is met when the remaining capacity of the battery (189) is less than 5%. For example, the electronic device (301) may determine that the specified initial condition is met when the battery voltage is less than 3.6 V.

[0105] According to one embodiment, the electronic device (301) may perform operation 450 if the battery (189) satisfies a specified initial condition (e.g., the result of operation 441 is “yes”).

[0106] According to one embodiment, the electronic device (301) may perform operation 470 if the battery (189) does not meet the specified initial condition (e.g., the result of operation 441 is “No”).

[0107] In operation 450, the electronic device (301) according to one embodiment, if the battery (189) satisfies a specified initial condition (e.g., the result of operation 441 is “yes”), connects the second charger (320) and the charger (302), and charges the battery (189) using the second charger (320) in a direct charging (hereinafter, “DC charging”) manner.

[0108] In operation 460, the electronic device (301) according to one embodiment may monitor whether a specified condition is met while performing DC charging through a charger (302) that does not support the PPS function (e.g., a second charger or a third charger). For example, the specified condition may include a state in which DC charging is no longer possible with a charger (302) that does not support the PPS function, i.e., a charger (302) that provides a fixed output voltage and a fixed output current (e.g., a second charger or a third charger), or an abnormal state in which a problem such as a fire may occur. A specific description of the specified condition will be described below in conjunction with Tables 1 and 3 included in the present disclosure.

[0109] According to one embodiment, the electronic device (301) may perform operation 470 while performing DC charging through a charger (302) that does not support the PPS function (e.g., a second charger or a third charger), if a specified condition is met (e.g., the result of operation 460 is “yes”).

[0110] According to one embodiment, the electronic device (301) may maintain operation 450 if a specified condition is not met (e.g., the result of operation 460 is “No”) while performing DC charging through a charger (302) that does not support the PPS function (e.g., a second charger or a third charger).

[0111] In operation 470, an electronic device (301) according to one embodiment can connect a first charger (310) and a charger (302) and charge a battery (189) using the first charger (310). The first charger (310) includes a switching charger (or switching regulator) and can charge the battery (189) by adjusting an input voltage input from an external device (302) or an input current input from the external device (302).

[0112] FIG. 5 is a flowchart illustrating the operation of an electronic device (301) according to one embodiment when a second charger is connected.

[0113] At least some of the operations illustrated in FIG. 5 may be omitted. At least some of the operations mentioned with reference to other drawings in this disclosure may be additionally inserted before or after at least some of the operations illustrated in FIG. 5.

[0114] The operations illustrated in FIG. 5 may be performed by a processor (e.g., the processor of FIG. 1). For example, the memory of the electronic device (301) (e.g., the memory (130) of FIG. 1) may store instructions that, when executed, cause the processor to perform at least some of the operations illustrated in FIG. 5.

[0115] Hereinafter, with reference to FIG. 5, the operation of an electronic device (301) according to one embodiment when a second charger is connected will be described.

[0116] In operation 510, the electronic device (301) according to one embodiment may detect the connection of a second charger (e.g., an AFC charger). For example, the electronic device (301) may determine that the second charger (e.g., an AFC charger) having a fixed output voltage and a fixed output current is connected based on performing data line communication with the charger (302) through a MUIC (e.g., a MUX IC) (323) when a voltage of about 5 V is input through a Vbus terminal. The electronic device (301) according to one embodiment may check the Rp value of the charger (302) through a USB communication module (e.g., a CCPD module) (322) and identify the type of cable of the charger (302).

[0117] In operation 520, the electronic device (301) according to one embodiment may receive power having a specified voltage from the charger (302) after identifying that the charger (302) is a second charger. For example, if the second charger is an AFC charger, the electronic device (301) may receive power having a voltage of about 9 V and a current of about 1.65 A from the second charger.

[0118] In operation 530, the electronic device (301) according to one embodiment may determine whether the battery (189) meets a specified initial condition. For example, the specified initial condition may include a condition in which the remaining amount (e.g., battery level) of the battery (189) is less than a specified percentage value, and / or a condition in which the battery voltage is less than a specified voltage. According to one embodiment, the electronic device (301) may determine that the battery (189) meets the specified initial condition if the remaining amount of the battery (189) is less than a specified percentage value (e.g., about 5%), and / or the battery voltage is less than a specified voltage (e.g., about 3.6 V). For example, the electronic device (301) may determine that the battery (189) meets the specified initial condition if the remaining amount of the battery (189) is less than 5%. For example, the electronic device (301) may determine that the battery voltage is less than 3.6 V. Action 530 may be similar to action 441 of FIG. 4.

[0119] According to one embodiment, the electronic device (301) may perform operation 541 if the battery (189) satisfies a specified initial condition (e.g., the result of operation 530 is “yes”).

[0120] According to one embodiment, the electronic device (301) may perform operation 542 if the battery (189) does not meet the specified initial condition (e.g., the result of operation 530 is “No”).

[0121] In operation 541, the electronic device (301) according to one embodiment may activate the second charger (320) and deactivate the first charger (310). For example, the electronic device (301) may control the connection between the second charger and the second charger (320) and block the connection between the second charger and the first charger (310).

[0122] In operations 550 and 560, the electronic device (301) according to one embodiment may set an input current to which an offset is applied and may DC charge the battery (189) based on the set input current. According to one embodiment, the processor may set the input current by applying an offset to the maximum output current that the second charger can provide. The processor may transmit information about the input current to which the offset is applied to the maximum output current to the second charger (320), and the second charger (320) may request the input current to which the offset is applied from the second charger.

[0123] According to one embodiment, the second charger may be in a "maximum current output state" in which it provides the maximum output current that it can provide to the electronic device (301) when the second charger (320) requests an input current exceeding the maximum output current. The maximum current output state in which the second charger provides the maximum output current to the electronic device (301) is similar to the "current limit mode" of the charger (302) supporting the PD protocol, and thus the maximum current output state of the second charger may be named "current limit mode."

[0124] In one embodiment, the offset may be set to take into account manufacturing variations or type-specific margins of the second charger so that the second charger can operate in "current limit mode." For example, considering manufacturing variations or type-specific margins of the second charger, it may be assumed that the maximum output current of the second charger has a range of about 1.5 A to about 1.8 A. The electronic device (301) may set the offset so that the second charger can operate in current limit mode regardless of manufacturing variations and / or type-specific margins of the second charger. For example, the offset may be set to about 0.3 A, and assuming that the maximum output current of a particular second charger is about 1.65 A, the input current with the offset applied may be about 1.95 A. In this case, the processor may transmit information about about 1.95 A to the second charger (320), and the second charger (320) may request an input current of about 1.95 A from the second charger. The second charger (320), whose maximum output current is set to about 1.65 A, may operate in a “current limit mode” in response to receiving a request for an input current of about 1.95 A, and may supply a maximum output current of about 1.65 A to the electronic device (301). The second charger (320) of the electronic device (301) may DC charge the battery (189) based on the maximum output current of about 1.65 A from the second charger. In the present disclosure, the offset value of about 0.3 A is only one example and may be variously changed without being limited thereto.

[0125] In operation 570, the electronic device (301) according to one embodiment may monitor whether at least one of a plurality of specified first conditions is satisfied while performing DC charging using the second charger. For example, the plurality of first conditions may include a state in which DC charging is no longer possible with the charger (302) that does not support the PPS function, i.e., the second charger that provides a fixed output voltage and a fixed output current, or an abnormal state in which a problem such as a fire may occur. According to one embodiment, the plurality of first conditions may be as shown in Table 1. According to one embodiment, if the electronic device (301) satisfies at least one of the first conditions included in Table 1, the electronic device may perform operation 580.

[0126] Input current regulation loop: Overcurrent input from the second charger. Battery voltage regulation loop: Overvoltage condition where the battery voltage is higher than the full charge voltage. Switching from CC mode to CV mode. Charging status is switched from CC mode to CV mode.

[0127] Referring to Table 1, the plurality of first conditions may include a case where an input current regulation loop occurs, a case where a battery voltage regulation loop occurs, or a case where the charging state is switched from CC mode to CV mode. According to one embodiment, the plurality of first conditions may include a case where an input current regulation loop occurs. The input current regulation loop may be a case where an overcurrent is input from the second charger. For example, assuming that the second charger (320) requests an input current of about 1.95 A with an offset applied to the second charger, a current greater than the input current may be input from the second charger. According to one embodiment, the electronic device (301) may determine that an abnormal condition in which an overcurrent is generated from the second charger is present when a current greater than the input current is input from the second charger. The overcurrent may be caused by aging or damage to the second charger. According to one embodiment, in order to prevent problems such as ignition, when a current greater than the input current is input from the second charger while performing DC charging using the second charger, the electronic device (301) determines that the first condition for stopping DC charging using the second charger is satisfied, and performs operation 580.

[0128] According to one embodiment, the plurality of first conditions may include a state in which a battery voltage regulation loop occurs. The battery voltage regulation loop may be a state in which the battery voltage is overvoltage while the battery (189) is being DC charged using the second charger. For example, assuming that the full charge voltage of the battery (189) is set to about 4.4 V, if the battery voltage is detected to be about 4.6 V, which is greater than the full charge voltage, a battery voltage regulation loop may occur and may be determined to be an abnormal state. According to one embodiment, when a battery voltage regulation loop occurs, the electronic device (301) may determine that the first condition for stopping DC charging using the second charger is satisfied and may perform operation 580.

[0129] According to one embodiment, the plurality of first conditions may include a state in which the charging state of the second charger is switched from CC mode to CV mode. According to one embodiment, when the charging state is switched from CC mode to CV mode, the processor may set a short period of a polling signal transmitted to the second charger (320) to check the input current. For example, when the charging state is in CC mode, the processor may set the output period of the polling signal to about 10 seconds, and when the charging state is switched from CC mode to CV mode, the processor may set the polling output period to a period shorter than about 10 seconds, for example, 5 seconds.

[0130] According to one embodiment, when the charging state is switched from CC mode to CV mode, the processor (120) may maintain DC charging for a specified time (e.g., period 602 of FIG. 6) from a point in time when the polling output cycle is changed from about 10 seconds to about 5 seconds, and may determine whether the input current satisfies a state in which the input current is less than a preset value while the DC charging is maintained. The state in which the input current is less than the preset value may include a state in which the input current is less than a current value lowered by the specified multiplier (e.g., 1 / 2, 1 / 3, 1 / 4) from the maximum input current that can be supplied to the battery (189) from the first charger (310).

[0131] In one embodiment, the processor may compare the input current input from the second charger with a value obtained by multiplying the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2, 1 / 3, 1 / 4) (e.g., a current value reduced by the specified multiplier). In one embodiment, the specified multiplier may be a value corresponding to a multiplier for increasing the input current from the second charger (320). For example, if the second charger (320) includes a 2:1 voltage divider that reduces the input voltage by 1 / 2 and increases the input current by 2, the specified multiplier may be 1 / 2. In this case, the processor may compare the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) multiplied by a specified multiplier of 1 / 2 with the input current input from the second charger. For example, assuming that the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) is about 3 A, the processor may monitor whether the input current input from the second charger is less than or equal to 1.5 A, which is obtained by applying a multiplier of 1 / 2 to about 3 A. According to one embodiment, when the input current input from the second charger is less than or equal to 1.5 A, which is obtained by applying a multiplier of 1 / 2 to about 3 A, the processor may determine that charging of the battery (189) using the first charger (310) is possible, or that a state in which DC charging is no longer possible has been reached, and may perform operation 580.

[0132] In one embodiment, the electronic device (301) can extend the period of charging the battery (189) in the CC mode by maintaining the DC charge until the input current input from the second charger is less than or equal to a value obtained by multiplying the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2). In one embodiment, the electronic device (301) can increase the speed of charging the battery (189) by extending the period of charging the battery (189) in the CC mode.

[0133] In operation 580, the electronic device (301) according to one embodiment may stop DC charging of the battery (189) using the second charger (320).

[0134] In operation 542, an electronic device (301) according to one embodiment can connect a first charger (310) and a second charger, and charge a battery (189) using the first charger (310). The first charger (310) includes a switching charger (or switching regulator) and can charge the battery (189) by adjusting an input voltage input from an external device (302) or an input current input from the external device (302).

[0135] FIG. 6 is a graph comparing the charging profile of an electronic device (301) according to one embodiment and the charging profile according to a comparative example when a second charger is connected.

[0136] In FIG. 6, graph 610 may represent a charging profile for charging a battery (189) when an electronic device (301) is connected to a second charger according to one embodiment.

[0137] In FIG. 6, graph 620 may represent a charging profile for charging a battery (189) when an electronic device (301) according to a comparative example is connected to a second charger. The electronic device (301) according to the comparative example may be an electronic device (301) that charges a battery (189) using a first charger (310) when a second charger that does not support a PPS function is connected.

[0138] Referring to graph 610, a charging profile for charging a battery (189) when an electronic device (301) according to one embodiment is connected to a second charger may include periods 601, 602, and 603 for performing DC charging of the battery (189) using the second charger (320), and period 604 for performing normal charging of the battery (189) using the switching charger of the first charger (310).

[0139] In period 601, the electronic device (301) according to one embodiment may cause the second charger to operate in "current limit mode" by setting an input current with an offset applied. Accordingly, the second charger may supply the maximum output current of the second charger, for example, 1.65 A, to the electronic device (301). According to one embodiment, the electronic device (301) may DC charge the battery (189) based on the maximum output current of the second charger, and at this time, the charging mode may be a CC mode in which the input current is maintained at a constant value.

[0140] In period 602, the electronic device (301) according to one embodiment may detect that the charging state of the second charger has switched from CC mode to CV mode. For example, if the electronic device (301) detects that the output voltage of the second charger detected through Vbus is fixed to about 9 V and the input current provided from the second charger has decreased, the electronic device (301) may determine that the charging state of the second charger has switched from CC mode to CV mode. According to one embodiment, when the charging state has switched from CC mode to CV mode, the electronic device (301) may set a short cycle of a polling signal transmitted to the second charger (320) to check the input current.

[0141] In period 603, the electronic device (301) according to one embodiment may compare the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) multiplied by a specified multiplier (e.g., 1 / 2, 1 / 3, 1 / 4) with the input current input from the second charger. In one embodiment, the processor may perform DC charging using the second charger (320) until the input current input from the second charger becomes less than or equal to 1.5 A, which is about 3 A multiplied by 1 / 2. In one embodiment, in period 603, the charging state may be a CC mode that charges the battery (189) while maintaining a current lower than the maximum output current of the second charger.

[0142] In periods 601, 602, and 603, the electronic device (301) according to the comparative example can supply an output current set lower than the maximum output current of the second charger to the electronic device (301), and the electronic device (301) according to the comparative example can operate in CC mode.

[0143] In period 604, the electronic device (301) according to one embodiment may stop DC charging and charge the battery (189) using the first charger (310) when the input current input from the second charger is less than or equal to a value obtained by multiplying the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2). According to one embodiment, in period 603, the charging state may be a CV mode in which the output voltage of the second charger is fixed to a voltage equal to or similar to the full charge voltage of the battery (189) and the output current of the second charger is lowered.

[0144] In period 604, the electronic device (301) according to the comparative example can charge the battery (189) in CV mode similarly to the electronic device (301) according to one embodiment.

[0145] An electronic device (301) according to one embodiment, unlike an electronic device (301) according to a comparative example, increases the speed of charging a battery (189) by increasing the period of charging the battery (189) in CC mode, and improves charging efficiency and heat generation performance by performing DC charging for a part of the period of charging the battery (189).

[0146] FIG. 7 is a graph comparing the heat generation of an electronic device (301) according to one embodiment and the heat generation of an electronic device (301) according to a comparative example when a second charger is connected.

[0147] In FIG. 7, graph 710 is a graph measuring heat generated on the surface of an electronic device (301) when the electronic device (301) according to the comparative example of FIG. 6 charges a battery (189) using a second charger.

[0148] In FIG. 7, graph 720 is a graph measuring heat generated on the surface of an electronic device (301) when the electronic device (301) charges a battery (189) using a second charger according to one embodiment of FIG. 6.

[0149] Comparing graphs 710 and 720, it can be confirmed that the electronic device (301) according to one embodiment generates less heat than the electronic device (301) according to the comparative example by performing DC charging for a portion of the period during which the battery (189) is charged. For example, it can be confirmed that the surface heating temperature of the electronic device (301) according to one embodiment is lowered by about 0.2° C. than the electronic device (301) according to the comparative example by performing DC charging for a portion of the period during which the battery (189) is charged.

[0150] FIG. 8 is a flowchart illustrating the operation of an electronic device (301) according to one embodiment when a third charger is connected.

[0151] At least some of the operations illustrated in FIG. 8 may be omitted. At least some of the operations mentioned with reference to other drawings in this disclosure may be additionally inserted before or after at least some of the operations illustrated in FIG. 8.

[0152] The operations illustrated in FIG. 8 may be performed by a processor (e.g., the processor of FIG. 1). For example, the memory of the electronic device (301) (e.g., the memory (130) of FIG. 1) may store instructions that, when executed, cause the processor to perform at least some of the operations illustrated in FIG. 8.

[0153] Hereinafter, with reference to FIG. 8, the operation of an electronic device (301) according to one embodiment when a third charger is connected will be described.

[0154] In operation 810, an electronic device (301) according to an embodiment may detect the connection of a third charger (e.g., a PD 2.0 charger (302)). For example, the electronic device (301) may check the Rp value of the charger (302) through a USB communication module (e.g., a CCPD module) (322) and identify the type of the charger (302) and the type of the cable of the charger (302).

[0155] In operation 820, an electronic device (301) according to one embodiment may perform PD BMC (bi-phase marked code) communication through a USB communication module (e.g., CCPD module) (322) and receive a designated power having a voltage boosted from about 5 V to about 9 V from a third charger.

[0156] In operation 830, the electronic device (301) according to one embodiment may determine whether the battery (189) meets a specified initial condition. For example, the specified initial condition may include a condition in which the remaining amount (e.g., battery level) of the battery (189) is less than a specified percentage value, and / or a condition in which the battery voltage is less than a specified voltage. According to one embodiment, the electronic device (301) may determine that the battery (189) meets the specified initial condition if the remaining amount of the battery (189) is less than a specified percentage value (e.g., about 5%), and / or the battery voltage is less than a specified voltage (e.g., about 3.6 V). For example, the electronic device (301) may determine that the battery (189) meets the specified initial condition if the remaining amount of the battery (189) is less than 5%. For example, the electronic device (301) may determine that the battery voltage is less than 3.6 V. Action 830 may be similar to action 441 of FIG. 4 or action 530 of FIG. 5.

[0157] According to one embodiment, the electronic device (301) may perform operation 841 if the battery (189) satisfies a specified initial condition (e.g., the result of operation 830 is “yes”).

[0158] According to one embodiment, the electronic device (301) may perform operation 842 if the battery (189) does not meet the specified initial condition (e.g., the result of operation 830 is “No”).

[0159] In operation 841, the electronic device (301) according to one embodiment may activate the second charger (320) and deactivate the first charger (310). For example, the electronic device (301) may control the connection between the second charger and the second charger (320) and block the connection between the second charger and the first charger (310). Operation 841 may be similar to operation 541 of FIG. 5 .

[0160] In operation 850, the electronic device (301) according to one embodiment may set the input current by considering the charging step. According to one embodiment, the third charger may be a charger (302) that provides power greater than or equal to a designated reference power (e.g., about 20 W), unlike the second charger. For example, the third charger may provide an output of about 20 W, or any one of about 27 W, about 45 W, and / or about 100 W that is greater than about 20 W. The third charger, unlike the second charger, has a relatively high output power. Therefore, when the electronic device (301) according to one embodiment detects that the third charger is connected, it may set the input current by dividing it into a plurality of charging steps. According to one embodiment, the input current of each of the plurality of charging steps may be determined based on a preset step-by-step input current value to control the charger (302) (e.g., the first charger) that supports the PPS function. For example, the processor may include a battery (189) driver (not shown) for charging the battery (189), and the battery (189) driver may store input current values ​​for each step for step-by-step DC charging using the PPS function. According to one embodiment, the processor may check the maximum driving current of the third charger in operation 810, which performs PD BMC (bi-phase marked code) communication through a USB communication module (e.g., CCPD module) (322). According to one embodiment, the electronic device (301) may compare the input current values ​​for each step for step-by-step DC charging using the PPS function with the maximum driving current of the third charger, and set the input current based on the comparison result.

[0161] According to one embodiment, the electronic device (301) may apply an operation to multiply the input current value mapped to each step by a specified multiplier (e.g., 2) so that the input current value of each preset step for utilizing the PPS function becomes greater than the maximum driving current of the third charger.

[0162] Step 1 Step 2 Step 3 (e.g. last step) Input current set to correspond to each step 2A 1.5A 1A Input current converted by multiplying by a specified multiplier (e.g. 2) 4A 3A 2A Output current of the third charger 2.75A 2.75A 2A

[0163] Referring to the second column of Table 2, the preset input current value corresponding to the first step may be about 2 A. The electronic device (301) may set the converted input current of about 4 A by multiplying about 2 A by a specified multiplier of 2. For example, the third charger may be a PD 2.0 charger (302) that provides a fixed value of 9 V / 2.75 A, and may operate in “current limit mode” when a converted input current of about 4 A is requested. Accordingly, the third charger may supply the maximum driving current of 2.75 A to the electronic device (301). The electronic device (301) may perform DC charging based on the input maximum driving current of 2.75 A. Referring to the third column of Table 2, the preset input current value corresponding to the second step may be about 1.5 A. The electronic device (301) can set a converted input current of about 3 A by multiplying the specified multiplier of about 1.5 A by 2. For example, the third charger can be a PD 2.0 charger (302) that provides a fixed value of 9 V / 2.75 A and can operate in “current limit mode” when a converted input current of about 3 A is requested. Accordingly, the third charger can supply a maximum driving current of 2.75 A to the electronic device (301). The electronic device (301) can perform DC charging based on the input maximum driving current of 2.75 A.

[0164] Referring to the fourth column of Table 2, the preset input current value corresponding to the third step may be about 1 A. The electronic device (301) may set a converted input current of about 2 A by multiplying about 1 A by a specified multiplier of 2. For example, the third charger may be a PD 2.0 charger (302) that provides a fixed value of 9 V / 2.75 A, and may supply 2 A to the electronic device (301) upon receiving a request for a converted input current of about 2 A. The electronic device (301) may perform DC charging based on the input 2 A.

[0165] In operation 860, the electronic device (301) according to one embodiment may perform DC charging for each set step. In one embodiment, the electronic device (301) may request the input current determined by the processor in operation 850 from the third charger, and may perform DC charging based on the power received from the third charger.

[0166] In operation 870, the electronic device (301) according to one embodiment may monitor whether at least one of a plurality of second conditions is satisfied while performing step-by-step DC charging using the third charger. For example, the plurality of second conditions may include a state in which DC charging is no longer possible with the charger (302) that does not support the PPS function, i.e., the third charger that provides a fixed output voltage and a fixed output current, or an abnormal state in which a problem such as a fire may occur. According to one embodiment, the plurality of second conditions may be as shown in Table 3. According to one embodiment, if the electronic device (301) satisfies at least one of the second conditions included in Table 3, the electronic device may perform operation 880.

[0167] Input current regulation loop: Overcurrent input from the third charger. Battery voltage regulation loop occurs in the last step. Overvoltage state where the battery voltage is higher than the full charge voltage in the last step. Switch from CC mode to CV mode. Charging state switches from CC mode to CV mode.

[0168] Referring to Table 3, the plurality of second conditions may include a case where an input current regulation loop occurs, a case where a battery voltage regulation loop occurs in the last step, or a case where the charging state is switched from CC mode to CV mode. According to one embodiment, the plurality of second conditions may include a case where an input current regulation loop occurs. The input current regulation loop may be a case where an overcurrent is input from a third charger. For example, assuming that the second charger (320) requests an input current of about 2.75 A to the third charger, a current greater than the input current may be input from the third charger. According to one embodiment, the electronic device (301) may determine that an abnormal condition in which an overcurrent is generated from the third charger is present when a current greater than the input current is input from the third charger. The overcurrent may be caused by aging or damage to the third charger. According to one embodiment, the electronic device (301), while performing DC charging using the third charger, if a current greater than the input current is input from the third charger, the electronic device (301) may determine that the second condition for stopping DC charging using the third charger is satisfied, and may perform operation 880.

[0169] According to one embodiment, the plurality of second conditions may include a state in which a battery voltage regulation loop occurs in the last step. The battery voltage regulation loop may be a state in which the battery voltage is overvoltage while the battery (189) is DC charged step by step using the third charger. For example, the reference voltage of the battery (189) preset to correspond to the last step may be set to the full charge voltage of the battery (189) (e.g., approximately 4.4 V). According to one embodiment, the electronic device (301) may determine that a battery voltage regulation loop occurs and is an abnormal state when the battery voltage is detected to be approximately 4.6 V, which is greater than the reference voltage (e.g., full charge voltage) of the battery (189) preset to correspond to the last step. According to one embodiment, the electronic device (301) may determine that the second condition for stopping the DC charging using the third charger is satisfied based on the occurrence of the battery voltage regulation loop in the last step, and may perform operation 880.

[0170] According to one embodiment, the electronic device (301) may change the charging step by changing the first input current corresponding to the current step to the second input current corresponding to the next step when a battery voltage regulation loop occurs in a specific step other than the last step. For example, the electronic device (301) may divide the steps for charging the battery (189) into a first step, a second step, and a third step and set them. According to one embodiment, the electronic device (301) may monitor whether the battery voltage exceeds the first battery (189) reference voltage (e.g., about 4.1 V) corresponding to the first step section during DC charging in the first step section. The electronic device (301) may determine that a battery voltage regulation loop has occurred when the battery voltage exceeds the first battery (189) reference voltage (e.g., about 4.1 V) corresponding to the first step section. The electronic device (301) may start the second step by changing the first input current (e.g., about 5.5 A) corresponding to the first step section to the second input current (e.g., about 4 A) corresponding to the second step section when a battery voltage regulation loop occurs in the first step section. According to one embodiment, the electronic device (301) may monitor whether the battery voltage exceeds the second battery (189) reference voltage (e.g., about 4.25 V) corresponding to the second step section while DC charging in the second step section. The electronic device (301) may determine that the battery voltage regulation loop has occurred when the battery voltage exceeds the second battery (189) reference voltage (e.g., about 4.25 V) corresponding to the second step section.The electronic device (301) can start the third step by changing the second input current (e.g., about 4 A) corresponding to the second step section to the third input current (e.g., about 3.5 A) corresponding to the third step section when a battery voltage regulation loop occurs in the second step section.

[0171] In the present disclosure, the steps for charging the battery (189) by the electronic device (301) are not limited to the first step, the second step, and the third step, and may be varied in various ways. For example, the electronic device (301) may charge the battery (189) by dividing the steps into two or more steps.

[0172] According to one embodiment, the plurality of second conditions may include a state in which the charging state of the third charger is switched from CC mode to CV mode. According to one embodiment, when the charging state is switched from CC mode to CV mode, the processor may set a short cycle of a polling signal transmitted to the second charger (320) to check the input current. For example, when the charging state is in CC mode, the processor may set the output cycle of the polling signal to about 10 seconds, and when the charging state is switched from CC mode to CV mode, the processor may set the polling output cycle to a cycle shorter than about 10 seconds, for example, 5 seconds.

[0173] In one embodiment, the processor may compare a value obtained by multiplying a maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2, 1 / 3, 1 / 4) with the input current input from the third charger. In one embodiment, the specified multiplier may be a value corresponding to a multiplier that increases the input current from the second charger (320). For example, if the second charger (320) includes a 2:1 voltage divider that lowers the input voltage by 1 / 2 and increases the input current by 2, the specified multiplier may be 1 / 2. In this case, the processor may compare a value obtained by multiplying a maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier, 1 / 2, with the input current input from the third charger. For example, assuming that the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) is about 3 A, the processor can monitor whether the input current input from the third charger is less than or equal to 1.5 A, which is about 3 A multiplied by 1 / 2. According to one embodiment, when the input current input from the third charger is less than or equal to 1.5 A, which is about 3 A multiplied by 1 / 2, the processor can determine that charging of the battery (189) using the first charger (310) is possible, or that a state in which DC charging is no longer possible has been reached, and perform operation 880.

[0174] According to one embodiment, the electronic device (301) may perform operation 860 again if none of the plurality of second conditions is met (e.g., the result of operation 870 is “No”).

[0175] In one embodiment, the electronic device (301) can extend the period of charging the battery (189) in the CC mode by maintaining the DC charge until the input current input from the third charger is less than or equal to a value obtained by multiplying the maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2). In one embodiment, the electronic device (301) can increase the speed of charging the battery (189) by extending the period of charging the battery (189) in the CC mode.

[0176] In operation 880, the electronic device (301) according to one embodiment may stop DC charging of the battery (189) using the second charger (320).

[0177] In operation 842, an electronic device (301) according to one embodiment can connect a first charger (310) and a second charger, and charge a battery (189) using the first charger (310). The first charger (310) includes a switching charger (or switching regulator) and can charge the battery (189) by adjusting an input voltage input from an external device (302) or an input current input from the external device (302).

[0178] FIG. 9 is a graph illustrating a charging profile of an electronic device (301) according to one embodiment when a third charger is connected.

[0179] Referring to FIG. 9, when an electronic device (301) according to one embodiment is connected to a third charger, a charging profile for charging a battery (189) may be divided into a plurality of charging steps. For example, the electronic device (301) may divide the steps for charging the battery (189) into a first step, a second step, and a third step and set them. 901 of FIG. 9 may represent a charging profile according to the first step. 902 of FIG. 9 may represent a charging profile according to the second step. 903 of FIG. 9 may represent a charging profile according to the third step, which is the last step.

[0180] An electronic device (301) according to one embodiment may, in a first step, DC charge a battery (189) based on the maximum output current of a third charger, wherein the charging mode may be a CC mode in which the input current is maintained at a constant value. For example, the maximum driving current of the third charger may be approximately 5.5 A.

[0181] According to one embodiment, the electronic device (301) may change the input current requested from the third charger to a second input current (e.g., about 4 A) lower than the maximum output current when a battery voltage regulation loop occurs during DC charging in the first step. When the input current is changed to the second input current, DC charging according to the second step may begin.

[0182] An electronic device (301) according to one embodiment may, in a second step, receive a designated power corresponding to a second input current from a third charger and DC charge a battery (189) based on the input current. At this time, the charging mode may be a CC mode in which the input current is maintained at a constant value.

[0183] According to one embodiment, the electronic device (301) may change the input current requested from the third charger to a third input current (e.g., about 3.5 A) lower than the second input current when a battery voltage regulation loop occurs during DC charging in the second step. When the input current is changed to the third input current, DC charging according to the third step may begin.

[0184] An electronic device (301) according to one embodiment can, in a third step, receive a designated power corresponding to a third input current from a third charger and DC charge a battery (189) based on the input. According to one embodiment, the third step may include a first sub-section (903a) operating in a CC mode in which the input current is maintained at a constant value, a second sub-section (903b) operating in a CV mode in which DC charging is performed until the input current input from the second charger is less than or equal to a value obtained by multiplying a maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2), and a third sub-section (903c) in which DC charging is stopped and the battery (189) is charged using the first charger (310) based on the input current input from the second charger being less than or equal to a value obtained by multiplying a maximum input current that can be supplied to the battery (189) from the first charger (310) (e.g., a switching charger) by a specified multiplier (e.g., 1 / 2).

[0185] An electronic device (301) according to one embodiment, unlike an electronic device (301) according to a comparative example, increases the speed of charging a battery (189) by increasing the period of charging the battery (189) in CC mode, and improves charging efficiency and heat generation performance by performing DC charging for a part of the period of charging the battery (189).

Claims

1. In electronic devices, battery; A first charger including a switching regulator; A second charger including a power converter that increases an input current supplied from an external device by a specified rate and outputs it, and decreases an input voltage supplied from the external device by the specified rate and outputs it; and comprising a processor, said processor comprising: Based on detecting that the external device is connected via a wire, determine the type of the external device, Determine whether the external device is a first charger capable of adjusting the output voltage and output current based on the control of the processor, If the external device is the first charger, the battery is charged using the second charger, and If the external device is not the first charger, but a second charger with fixed output voltage and output current: The above battery satisfies the condition that the remaining capacity or voltage of the above battery is less than the specified value as the specified initial condition, If the above battery does not meet the specified initial conditions, the battery is charged using the first charger, When the above battery satisfies the specified initial conditions, the battery is charged using the second charger, Monitoring whether a plurality of first conditions specified while charging the battery through the second charger are satisfied, such as a state in which a current greater than the input current is input from the second charger, a state in which the battery voltage of the battery is detected as a voltage higher than a specified full charge voltage, or a state in which the input current is less than a preset value, and If at least one of the plurality of first conditions is satisfied, the second charger is disabled and the battery is charged using the first charger. Electronic devices.

2. In paragraph 1, When the above input current is less than the preset value, Including a state in which the input current is lower than a current value lowered by the specified ratio from the maximum input current that can be supplied to the battery from the first charger. Electronic devices.

3. In paragraph 1, The above second charger is a charger that does not support PD (power delivery) communication and provides an output less than the specified standard power. Electronic devices.

4. In paragraph 3, The above second charger is a charger that does not support the PPS (programmable power supply) function. Electronic devices.

5. In paragraph 3, The above processor, If the external device connected to the electronic device is the second charger and satisfies the specified initial condition, Set the input current by applying an offset to the maximum output current that the second charger can provide, By requesting the input current to which the offset is applied to the second charger, the maximum output current is received from the second charger, and By controlling the maximum output current from the second charger to be input to the second charger, the battery is charged. Electronic devices.

6. In paragraph 1, The above processor If the external device is not the first charger, but a third charger with fixed output voltage and output current: Verify that the above battery meets the specified initial conditions, If the above battery does not meet the specified initial conditions, the battery is charged using the first charger, When the above battery satisfies the specified initial conditions, the battery is charged using the second charger, Monitoring whether at least one of a plurality of second conditions specified while charging the battery through the second charger is satisfied, and If at least one of the above plurality of second conditions is satisfied, the second charger is disabled and the battery is charged using the first charger. Electronic devices.

7. In paragraph 6, The above third charger is a charger that supports PD (power delivery) communication and provides an output greater than or equal to the specified reference power. Electronic devices.

8. In paragraph 6, The above plurality of second conditions are: A state in which a current greater than the input current is input from the third charger; A state in which, in the last step section among the plurality of charging steps for charging the battery, the battery voltage of the battery is detected to be higher than a specified full charge voltage; or An electronic device including a state in which the output current of the third charger is switched from a CC (constant current) mode in which the output voltage of the third charger is fixed to a CV (constant voltage) mode in which the output voltage of the third charger is fixed.

9. In paragraph 8, The above processor, When the third charger is switched from the CC mode to the CV mode, the output cycle of the polling signal for checking the current input to the second charger is adjusted to be short. Electronic devices.

10. In paragraph 9, The above processor, When the third charger switches from the CC mode to the CV mode, the input current input from the third charger is compared with a value obtained by applying a specified multiplier to the maximum input current supplied to the battery from the first charger, When the input current input from the third charger is less than or equal to a value obtained by applying a multiplier specified for the maximum input current, the second charger is disabled and the battery is charged using the first charger. Electronic devices.

11. In the method of an electronic device, The electronic device comprises a battery, a first charger including a switching regulator, and a second charger including a power converter for lowering an input current supplied from an external device by a specified rate and for increasing an input voltage supplied from the external device by the specified rate. The above method, An action to determine the type of the external device based on detecting that the external device is connected via a wire; An operation of determining whether the external device is a first charger capable of adjusting output voltage and output current based on control of the electronic device; If the external device is the first charger, an operation of charging the battery using the second charger, and If the external device is not the first charger, but a second charger with fixed output voltage and output current: An operation for checking whether the remaining capacity or voltage of the battery satisfies a condition that is less than a specified value as a specified initial condition of the battery; If the above battery does not meet the specified initial condition, an operation of charging the battery using the first charger; An operation of charging the battery using the second charger when the battery satisfies the specified initial conditions; An operation of monitoring whether a plurality of first conditions specified while charging the battery through the second charger are satisfied, including a state in which a current greater than the input current is input from the second charger, a state in which the battery voltage of the battery is detected as a voltage higher than a specified full charge voltage, or a state in which the input current is less than a preset value, and If at least one of the plurality of first conditions is satisfied, an operation of disabling the second charger and charging the battery using the first charger is included. method.

12. In paragraph 11, The state in which the input current is less than the preset value includes a state in which the input current is less than a current value lowered by the specified multiplier from the maximum input current that can be supplied to the battery from the first charger. method.

13. In paragraph 11, The above second charger is a charger that does not support PD (power delivery) communication and provides an output less than the specified standard power. method.

14. In paragraph 13, The above second charger is a charger that does not support the PPS (programmable power supply) function. method.

15. In paragraph 13, If the external device connected to the electronic device is the second charger and satisfies the specified initial condition, An operation for setting an input current that applies an offset to the maximum output current that the second charger can provide; An operation of receiving the maximum output current from the second charger by requesting the second charger to which the offset is applied, and Further comprising an operation of charging the battery by controlling the maximum output current from the second charger to be input to the second charger. method.

Images